GLOBAL PX/RX/LP. Operation and maintenance instructions GLOBAL PX GLOBAL RX GLOBAL LP FW GLOBAL PX FW GLOBAL PX TOP

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1 GLOBAL PX/RX/LP Operation and maintenance instructions Applicable to program versions TAC5 Version DT & DG GLOBAL PX GLOBAL RX GLOBAL LP FW GLOBAL PX FW GLOBAL PX TOP

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3 GLOBAL PX/RX/LP Table of content 1.0 Safety precautions 2.0 Symbols and abbreviations 3.0 Product Overview 4.0 Wiring Overview 5.0 Functions 6.0 Commissioning 6.1 Commissioning with RC interface 6.2 Commissioning with GRC interface 6.3 Commissioning with App Eole4 interface 7.0 Preventive maintenance 8.0 Troubleshooting 9.0 Parameters/Commissioning Sheet

4 1.0 Installation manual Applicable for the following units EXCHANGER SIZE HANDING FAN 800 Left / Right Backward 800 Left / Right Forward (FW) 1200 Left / Right Backward 1200 Left / Right Forward (FW) 2000 Left / Right Backward Global PX Counterflow 2000 Left / Right Forward (FW) 3000 Left / Right Backward 3000 Left / Right Forward (FW) 4000 Left / Right Backward 4000 Left / Right Forward (FW) 5000 Left / Right Backward 5000 Left / Right Forward (FW) 6000 Left / Right Backward 6000 Left / Right Forward (FW) Global RX Rotary 2000 Left / Right Backward 4000 Left / Right Backward 6000 Left / Right Backward 9000 Left / Right Backward 450 Left / Right Forward (FW) Global LP Counterflow 600 Left / Right Forward (FW) 1000 Left / Right Forward (FW) 1600 Left / Right Forward (FW) 2000 Left / Right Forward (FW) HOW TO READ THIS DOCUMENT Please make sure that you have read and understood the safety precautions below. For new users, please read chapter 3 where the Symbols and Abbreviations used for GLOBAL are listed and Chapter 5 where the operating principles of a GLOBAL air handling unit are described. The commissioning of the unit is described in chapter 6. The commissioning chapter is divided based on what device (Remote Control, Graphical Remote Control or App) is used to control the unit. Simply go to the sub chapter, relevant for your device and the base setup for the working mode which will be used to control the unit. RANGE OF APPLICATION The GLOBAL units are designed for use in comfort ventilation applications. Depending on the variant selected, GLOBAL units can be utilised in buildings such as office buildings, schools, day nurseries,public buildings, shops, residential buildings, etc. GLOBAL units equipped with plate heat exchangers (PX) can also be used for the ventilation of moderately humid buildings; however not where the humidity is continuously high, such as in indoor swimming baths, saunas, spas or wellness centres. Please do contact us if you have a need for a unit that is suited for such an application 4

5 Disclaimer Danger/Warning/Caution All staff concerned shall acquaint themselves with these instructions before beginning any work on the unit. Any damages to the unit or its components caused by improper handling or misuse by the purchaser or the installer cannot be considered subject to guarantee if these instructions have not been followed correctly. Make sure that the power supply to the unit is disconnected before performing any maintenance or electrical work! All electrical connections must be carried out by an authorized installer and in accordance with local rules and controls. Although the mains supply to the unit has been disconnected there is still risk for injury due to rotating parts that have not come to a complete standstill. Beware of sharp edges during mounting and maintenance. Make sure that a proper lifting device is used. Use protective clothing. Unit should always be operated with closed doors and panels. If the unit is installed in a cold place make sure that all joints are covered with insulation and are well taped. Duct connections/duct ends should be covered during storage and installation, in order to avoid condensation inside of the unit. Check that there are no foreign objects in unit, ducting system or functional sections. 5

6 2.0 Symbols and abbreviations BW BACKWARD CURVED FAN FW FORWARD CURVED FAN BF BAG FILTER PF PLEATED FILTER RX ROTARY HEAT EXCHANGER PX PLATE HEAT EXCHANGER WARNING Must be connected by a qualified Electrician. Warning! Hazardous voltage. OUTDOOR AIR ODA Air from outdoor to the AHU SUPPLY AIR SUP Air from the AHU to the building EXTRACT AIR ETA Air from the building to the AHU EXHAUST AIR EXH Air from the AHU to outdoor COOLING COIL BA- NV / KW HEATING COIL (WATER / ELECTRICAL) SILENCER GD CTm MOTORIZED DAMPER PRESSURE SENSOR P Tx SLIP CLAMP SC MS TEMPERATURE SENSOR Nr = x (1,2,3 ) FLEXIBLE CONNECTION CIRCULAR DUCT CONNECTION ER For inlet SR For outlet 6

7 3.0 Product Overview 3.1 GENERAL OVERVIEW RIGHT HAND UNIT (SUPPLY AIR TO THE RIGHT) LEFT HAND UNIT (SUPPLY AIR TO THE LEFT) Global RX (right version) Global RX (left version) Global PX (right version) Global PX (left version) GLOBAL LP 450 (BOTTOM) GLOBAL LP 600/1000/2000 (BOTTOM) Attention: The difference between left and right LP units is the factory placement of the controls box on opposite sides. ATTENTION Right and left hand units have different article numbers and should be ordered accordingly. It is however possible to change the direction afterwards but only by an accredited Service technician. Main version described in the manuals is always the hand right version. 7

8 GLOBAL PX GLOBAL RX GLOBAL LP GLOBAL PX TOP 1. Main switch for power supply AHU 2. Main switch for power supply electrical coils (both internal pre-hating and post-heating) 3. Centralized wiring box with TAC5 controller 4. Supply fan (BC or FW)) 5. Extract fan (BC or FW) 6. Kit CA -airflow measurement (option) 7. F7 filter at outdoor air side (bag or pleated) 8. M5 filter on extract air side (F7 as accessory) 9. Heat exchanger (Plate or Rotary) 10. Modulating 100% by-pass (for PX units only) 11. Drain pan and drain pipe (for PX units only) 12. Pre-heating electrical antifrost coil (accessory for PX units) 13. Internal post-heating water or electrical coil (accessory) 14. Motorized damper (at outdoor air side - accessory) 15. Motorized damper (at exhaust air side - accessory) 16. Access panel (PX LP units) 17. Flexible connection(accessory) 18. Slip Clamps (accessory) 19. Water connection for postheating (accessory) 1, 2 and 3 must be installed by an accredited electrician Note: internal electrical coils, motorized dampers, internal fan-pressure sensors, flexible connections and slip-clamps have to be ordered initially and are all pre-mounted and factory wired. Internal heating watercoil accessory is pre-mounted but has to be hydraulically and electrically connected by the installer. 8

9 3.2 AIR VOLUMES AND DIMENSIONS FOR GLOBAL PX & GLOBAL RX FOR GLOBAL LP EXCHANGER SIZE AIR VOLUME A [mm] B [mm] C [mm] Weight [kg] m³/h 222l/s m³/h 333l/s Global PX Counterflow m³/h 560l/s m³/h 833l/s m³/h 1.111l/s m³/h 1.389l/s m³/h 1.667l/s m³/h 560l/s Global RX Rotary m³/h 1.111l/s m³/h 1.667l/s m³/h 2.500l/s * 450m³/h 125l/s Global LP Counterflow 600* 600m³/h 167l/s * 1.000m³/h 278l/s * 1.600m³/h 444l/s * 2.000m³/h 556l/s Duct connections: see drawings downloadable on 9

10 4.0 Wiring Overview MAIN CONTROL BOARD TAC 5 DG GLOBAL PX & GLOBAL LP (1000/1600/2000) CID Global PX & LP CT = output to CT actuator(s) (option - prewired) IN2 = dpa (external pressostat digital input) KWout = output for KWout power regulation (option - prewired) IN3 = Fire alarm AL1 = DEFAULT ALARM (230V/5A) IN4 = Bypass B- / A+ / GND / +12V = connection to the remote control (RC) IN5 = Real time clock auto/manu K1: CA MODE = m³h K1 IN6 = ON/OFF post heating (NV/KWout) LS / CPs MODE = START/STOP IN7 = ON/OFF SUPPLY if fire alarm TQ MODE = %torque K1 IN8 = ON/OFF EXHAUST if fire alarm K2: CA MODE = m³h K2 IN9 = BOOST LS / CPs MODE = 0-10V INPUT OUT1 = 0-10V OUTPUT (airflow/ pressure) TQ MODE = %torque K2 OUT2 = 0-10V OUTPUT (airflow/ pressure) K3: CA MODE = m³h K3 O.R.1 (output relay 1 - SAT3) = PRESSURE ALARM LS / CPs MODE = % ON K3 or 0-10 V INPUT O.R.2 (output relay 2 - SAT3) = FAN ON TQ MODE = %torque K3 O.R.3 (output relay 3 - SAT3) = WATER PUMP (for NV option) IN1 = Master selection O.R.4 (output relay 4 - SAT3) = BYPASS STATUS T1 = from outdoors T sensor (prewired) BYPASS = output to bypass actuator (prewired) T2 = from indoors T sensor (prewired) KWin = output for KWin power regulation (option - prewired) T3 = to outdoors T sensor (prewired) IN12 = input for modulating bypass position T4 = NV anti freeze protection T sensor (option - prewired) T5 = supply T sensor for NV/KWout regulation (option - prewired) OUT5 = 24VDC / 1A OUT4 = 0-10V OUTPUT internal post heating (NV) 10

11 GLOBAL RX AND GLOBAL LP (450/600) CID Global RX & LP CT : output to CT actuator(s) (option - prewired) IN2 = dpa (external pressostat digital input) KWout = output for KWout power regulation (option - prewired) IN3 = Fire alarm AL1 = DEFAULT ALARM (230V/5A) IN4 = Bypass B- / A+ / GND / +12V = connection to the RC TAC5 IN5 = Real time clock auto/manu K1: CA MODE = m³h K1 IN6 = ON/OFF post heating (NV/KWout) LS / CPs MODE = START/STOP IN7 = ON/OFF SUPPLY if fire alarm TQ MODE = %torque K1 IN8 = ON/OFF EXHAUST if fire alarm K2: CA MODE = m³h K2 IN9 = BOOST LS / CPs MODE = 0-10V INPUT OUT1 = 0-10V OUTPUT (airflow/ pressure) TQ MODE = %torque K2 OUT2 = 0-10V OUTPUT (airflow/ pressure) K3: CA MODE = m³h K3 O.R.1 (output relay 1 - SAT3) = PRESSURE ALARM LS / CPs MODE = % ON K3 or 0-10 V INPUT O.R.2 (output relay 2 - SAT3) = FAN ON TQ MODE = %torque K3 O.R.3 (output relay 3 - SAT3) = WATER PUMP (for NV option) IN1 = Master selection O.R.4 (output relay 4 - SAT3) = BYPASS STATUS T1 = from outdoors T sensor (prewired) R-GND: output for heat exchanger wheel speed command (prewired) T2 = from indoors T sensor (prewired) IN12-GND: input for heat exchanger sensor feedback (prewired) T4 = NV anti freeze protection T sensor (option - prewired) R = output to control heat exchanger rotation speed (prewired) T5 = supply T sensor for NV/KWout regulation (option - prewired) IN12 = input pulse from heat exchanger magnet (prewired) SAT MODBUS or SAT KNX or SAT ETHERNET or SAT WIFI PR1 = ΔPa from supply inlet fan (only on RX- option) SAT BA/KW PR3 = ΔPa from exhaust inlet fan (only on RX - option) OUT4 = 0-10V OUTPUT internal post heating (NV) OUT5 = 24VDC / 1A 11

12 4.1 CIRCUIT BOARD SAT 3 Fig. 1 The SAT3 circuit board is used for extra functions for which inputs and outputs are not included as standard in the control unit of the air handling unit. All outputs are normally open (N.O.). Maximal load: 230VAC 4A. The circuit board SAT3 allows for signalling of the following by means of a potential- free contact (Fig.2) Fan status Differential pressure alarm. General alarm Bypass status Circulation pump Installation Fig. 2 SAT3 must be plugged into the control board circuit (fig.1). Be careful: do not plug SAT3 in when the control board is powered 4.2 CIRCUIT BOARD SAT BA/KW SAT TAC5 BA/KW is a satellite circuit designed to be fitted on the main control board. It permits control of external coils. Installation Fig. 3 Simply plug the SAT BA/KW into the appropriate connector on the main controller (see Fig.3). Attention: SAT TAC5 BA/KW must be plugged in before the circuit is powered. SAT must be plugged in correctly, wrong positioning can damage both circuits permanently. Wiring The terminals of the SAT BA/KW are displayed in fig.4 WP WP = Circulation pump (contact closed for cooling / heating demand. max. 30 V-2 A) Fig. 4 OUT7 = 0-10 V output to control heating or change over coil. OUT8 = 0-10 V output to control cooling coil OUT9 = ULN output to control electrical coil T 7 = Heating coil frost protection sensor (T7) T 8 = Cooling coil frost protection sensor (T8) IN10 IN11 = boosted cooling OFF, (to boost external post heating coil use IN6) = Input cooling/heating (open = heating, closed = cooling) 12

13 4.3 REC TABLE On the control board REC type is used to define the type unit. When replacing the control board, the REC type needs to be configured in the product setup menu. The product setup menu is used to enable specific features or to modify default settings. This must be done by an accredited technician. A code and special training are required to access this menu group. CIRCUIT BOARD TAC5 DG TAC5 DT PX PX PX PX PX PX PX PX 450 TOP Global PX PX 800 TOP PX 1200 TOP PX 2000 TOP PX PX PX PX PX PX PX RX Global RX RX RX RX PX LP Global PX LP PX LP PX LP PX LP PX LP

14 4.4 INTERNAL WIRING DIAGRAMS GLOBAL PX 14

15 4.5 INTERNAL WIRING DIAGRAMS GLOBAL RX 15

16 4.6 INTERNAL WIRING DIAGRAMS GLOBAL LP 16

17 5.0 Functions 5.1 WORKING MODE There are five main working modes. The working mode determines how the airflow or the fan torque is modulated. The default working mode is Constant Airflow regulation (CA). Exceptions are units equipped with backwards fans without the Constant Air (CA) Kit or if Constant Torque (TQ) mode has been selected in the product setup menu, in both cases it is the fan torque that will be controlled and modulated. In all the working modes, the supply fan(s) will operate as per the assigned mode and parameters. The exhaust fan(s) will operate according to the chosen percentage of the supply fan (%EXH/SUP ratio). The five main working modes are: 1 - Constant Airflow regulation (CA): Flow regulation involves operating the air handling unit to keep the pre-set airflow constant. The speed of the fans is automatically regulated to provide correct airflow even if the filters begin to become clogged, air terminals are blocked, etc. Constant airflow is advantageous, since the airflow always is exactly as it was from the beginning. It should however be noted that everything that increases the pressure drop in the ventilation system, such as blocking of air terminals and dust accumulating in filters, causes the fans to run at a higher speed. This results in higher power consumption and may also cause discomfort in the form of noise. There are three airflow setpoints to be configured by the user (m³h K1, m³h K2, m³h K3). 2 - Constant torque regulation (TQ): 3 constant torque setpoints to be configured by the user (%TQ K1, %TQ K2, %TQ K3). The setpoint is configured in % of the maximal torque. The constant torque regulation (TQ) allows to vary the fan speed automatically, to provide a variable airflow for demand controlled systems (DCV). This allows for demand controlled fan operation or fan optimisation by a BMS system, mostly used in multi zone systems. This operation mode can partially replace the constant pressure regulation (CP) when a duct pressure sensor hasn t been installed. 3 - Demand control 0-10 (LS) : The airflow is controlled by a 0-10 V signal. The control signal is connected to terminals K2&GND. The assigned supply airflow is set as a percentage of a linear 0-10 V signal. The user defines the link with 4 parameters: Vmin, Vmax, m³h Vmin and m³h Vmax, applied to the following diagram. The demand control mode (LS) is also available for modulating fan torque instead of airflow (relevant for backwards fans units without Kit CA). The principle is identical to the LS Mode operation with the difference that Vmin and Vmax are connected to a %TQ instead of m³/h. 4 - Constant pressure regulation (CP) : The airflow automatically varies to provide constant pressure in the ducting system. This type of regulation is also called VAV regulation (Variable Air Volume). CPs on supply: the airflow of the supply fan(s) is modulated to maintain a certain pressure value constant. The pressure is measured by a pressure sensor located in the supply air duct. CPs on exhaust: the airflow of the exhaust fan(s) is modulated to maintain a certain pressure value constant. The pressure is measured by a pressure sensor located in the supply air duct. 5 - MODE OFF : This stops the AHU 17

18 5.2 TEMPERATURE REGULATION There are several options available on GLOBAL units to ensure a comfortable temperature. The options are controlled either via supply or extract air temperature. Post-heating options : Internal electric coil (KWout) Internal hydraulic coi (NV) External electric coil (KWext) External hydraulic coi (BA+) Supply Air Temperature (Comfort on T5) Supply temperature regulation is the default setting. This involves keeping a constant supply air temperature without consideration to the load in the premises. The supply air temperature is measured on sensor T5. Post-cooling : External hydraulic coil (BA-) Extract Air Temperature (Comfort on T2) The default temperature regulation can be changed to Extract temperature regulation via the advanced setup. The extract air temperature is measured on sensor T2. Extract air regulation involves keeping a constant temperature in the extract air duct (premises), by regulating the supply air temperature. This provides a uniform temperature in the premises regardless of the load. The internal sensor T2 can be replaced with the optional external room temperature sensor (CID370042). Settings : Temperature sensor positioning : SUPPLY AIR EXTRACT AIR If post-heating 20 C 20 C If post-cooling 17 C 17 C 5.3 FREE COOLING The free cooling function uses the lower temperature of the outside air to cool the building. Free cooling is realized by means of the integrated 100% modulating bypass of the heat exchanger. The optional output O.R.4 on the SAT3 relay indicates the position of the bypass. The contact will open if the bypass is fully closed, or close if the bypass is fully or partially open. The bypass can function as on/off or modulating. This is configured in ADVANCED SETUP. In modulating mode, the temperature is configured in the base setup and the position of the bypass will modulate in order to maintain the setpoint. The free cooling function is activated automatically. An on/off bypass operates according to the logic below: Free cooling STARTS if the following conditions are TRUE : The outdoor temperature (sensor T1) is lower than the extract air temperature (sensor T2) The outdoor temperature (sensor T1) is higher than 15 C. The extract air temperature (sensor T2) is higher than 22 C. Free cooling STOPS if one of the following conditions is TRUE : The outdoor temperature (sensor T1) is higher than the extract air temperature (sensor T2). The outdoor temperature (sensor T1) is lower than 14 C. The extract air temperature (sensor T2) is lower than 20 C. These values can be configured in ADVANCED SETUP 18

19 5.4 CHANGE OVER FUNCTION PIPE AUTOMATIC CHANGE OVER The TAC5 controller allows for the control of both cooling and heating coil. Both coils are equipped with their motorised 3-way valves. The offset between the measured temperature (supply air or extract air, to be configured) and the setpoint will determine if heating or cooling is automatically activated. When the unit is equipped with both a cooling and a heating coil, only one setpoint has to be configured: Comfort temperature. The neutral band prevents the cooling and heating systems from counteracting each other. The high neutral band is added to the comfort setpoint for the activation of the cooling function and the low neutral band is subtracted from the comfort setpoint for the activation of the heating function. Both high and low neutral bands have to be configured in the advanced setup. 19

20 5.5 FROST PROTECTION HEATING COIL The frost protection function is always active if the heating coil has been correctly configured in the product setup. The monitoring function uses the temperature sensor T4 for the integrated coil (NV) or the temperature sensor T7 for the external coil (BA). The function is activated when the surface temperature of the coil drops below 5 C. Under these conditions the pump output is activated and the three-way valve output will be 100%. If after 15 minutes the surface temperature has not risen, the unit will shut down and generate a frost alarm PLATE HEAT EXCHANGER (PX) There are three strategies to protect the plate heat exchanger from freezing : 1 - Reduced supply air flow : The heat exchanger is supplied with a frost protection sensor on the exhaust air (T3). If the exhaust air temperature (T3) is >1 C and <+5 C : In mode CA and LS, the supply air flow will modulate between 100% and 33% (AFlow) of the setpoint (AFn) In mode CPs, the supply air pressure will modulate between 100% and 50% (AFlow) of the setpoint (AFn) On the remote control, the LED indicating frost protection (AF) will light. If the exhaust air temperature (T3) is <1 C, the supply air fans will stop until the exhaust air temperature (T3) is >2 C for 5 minutes. On the remote control, the LED indicating frost protection (AF) will flash. 2 - Modulating bypass : The modulating bypass is controlled by the exhaust temperature sensor (T3). If: Exhaust temperature (T3) >+1 C: bypass closed or controlled by free cooling function Exhaust temperature (T3) +1 C: bypass will modulate for the exhaust temperature (T3) to exceed +1 C. The corresponding supply air temperature will drop due to a lower airflow through the heat exchanger 3 - Electrical preheating coil (accessory) : If an electrical pre-heating coil (KWin) is installed and configured, the pre-heating coil (KWin) will modulate so the exhaust temperature is +1 C. 4 - Differential pressure measurement (Cold climate option) : For cold climate conditions ( -20⁰C), the unit is equipped with a differential pressure sensor mounted on the heat exchanger. The pressure sensor detects when the pressure drop, due to frost, has become too high. In critical conditions, the supply air flow will be paused for a short time, to allow for defrosting. The frost protection strategy (down regulation supply airflow, modulating bypass or electrical pre-heating) will still be used as a first step. The defrost function will only be active if the frost protection strategy is not sufficient. These values can be configured in ADVANCED SETUP ROTARY HEAT EXCHANGER (RX) In order to protect the rotary heat exchanger from freezing, the strategy for frost protection consists of modulating the speed of the rotating heat exchanger, which is linked to the outdoor air temperature (sensor T1). If the outdoor air temperature < T AF (default -9 C): the rotation speed of the heat exchanger is reduced to avoid the risk of icing. To exit this anti-frost protection: T (T1) T AF for 5 minutes. These values can be configured in ADVANCED SETUP. 20

21 5.6 TIME SCHEDULE (VIA REMOTE CONTROL RC) The controller allows 4 time slots (channels) to be configured. For each day of the week, the operation mode can be either AUTO (operate according to time slots) or OFF. For each time slot select : In CA mode: the airflow by selecting m³h K1 / m³h K2 / m³h K3 / OFF (stop) In TQ mode: the torque by selecting %TQ K1 / %TQ K2 / %TQ K3 / OFF (stop) In LS mode : with only one 0-10 V signal (default) or with 2 signals to control the supply airflow: the link LS (percentage of the nominal link, cfr m³/h Vmin and m³/h Vmax in setup OR cfr %TQ Vmin and %TQ Vmax in setup) and the rate of the exhaust airflow by the supply airflow. with one 0-10 V signal for supply and one 0-10 V signal for exhaust (via advanced setup): one link LS (percentage of the nominal link) for supply and one for exhaust. In CP mode : CP on supply or exhaust: the pressure setpoint (percentage of the nominal setpoint) and the rate of the exhaust airflow by the supply airflow. CP on supply and exhaust: one pressure setpoint (percentage of the nominal setpoint) for supply and one for exhaust. 21

22 6.0 Commissioning 6.1 COMMISSIONING WITH RC INTERFACE BASE SETUP The remote control terminal (RC) consists of a control box, to be wired to the controller of the air handling unit. The terminal has an LCD display, 5 push buttons and several LED s to indicate functions and alarms. The setup is performed using the LCD screen and the 4 buttons SETUP,, and ENTER. Fig. 1 To start the setup: Select the setup menu, using the left button on the RC interface, The SETUP LED will light. (fig 1) Press and hold the SETUP button for 4 secs., until the text SETUP appears on the screen. Select the menu with the buttons and then confirm by pressing ENTER. Numbers are entered digit by digit. 22

23 Base setup in Constant Airflow mode (CA) 1 FILTERS RESET? N Only if the filters hours parameter (see here below) has been set to a value higher than 0. Reset the counter for the filters hours. To do when then filters have been cleaned or changed 2 LANGUAGE: GB Language selection menu 3 HEATING T? 20 If a post-heating coil is installed, enter the post-heating t setpoint 4 COOLING T? 17 If a post-cooling coil is installed, enter the post-cooling t setpoint 5 FREECOOL T? 15 6 COMFORT T? 20 Free cooling setpoint; comfort control strategy will define if this is either a supply air or an extract air temperature setpoint (see advanced setup). If automatic changeover between heating and cooling enabled (see changeover parameter in advanced setup), enter the comfort T setpoint. 7 WORKING MODE: CA Select constant airflow (ca) 8 m³h K1? m³h K2? m³h K3? 0000 Setpoint airflow 1 (will be activated if position i on rc is selected or if contact between terminals k1 and + 12v is closed on tac5 circuit) Setpoint airflow 2 (will be activated if position ii on rc is selected or if contact between terminals k2 and + 12v is closed on tac5 circuit) Setpoint airflow 3 (will be activated if position iii on rc is selected or if contact between terminals k3 and + 12v is closed on tac5 circuit) 11 %EXH/SUP 100% Ratio between exhaust (exh) and supply (sup) airflow to create over, under or even pressure CONFIG TIME? y Select y to set the hour and date SET TIME: HH:MM Enter the time 12 SET TIME: DD/MM/YY Enter the date 13 TIME SEG MENT? Y Select y to activate the time channel 13.1 TIME 1: --:-- Enter channel1 starting time. If the time slot is empty, it is inactive SUPPLY: 0000 m³h Enter supply airflow (0000 = fan stop) EXHAUST: 0000 m³h Enter exhaust airflow (0000 = fan stop) 13.2 TIME 2: --: TIME 3: --: TIME 4: --:-- Enter channel2 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel3 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel4 starting time. If empty the time slot is inactive. Same principle as for channel DAY OFF: Y Select y if you wish to activate the day off option MONDAY: AUTO TUESDAY:... For MONDAY select AUTO (normal time slot setup is active) or OFF (no ventilation) Make the same selection (AUTO/OFF) or the remaining days of the week 23

24 13 PRESSURE ALARM? Y Optional, select Y to configure the pressure alarm P SUP: P EXH: 200 Enter the allowed pressure increment for the supply airflow, beyond which the pressure alarm will trip. Enter the allowed pressure increment for the exhaust airflow, beyond which the pressure alarm will trip INIT Pa REF? Y Initialization of the pressure reference for the alarm. Filters should be clean m³h INIT: 0000 xxxx m³h / xxx Pa Enter the nominal airflow, same for supply and exhaust, for the initialization of the reference pressure. After +/-1 minute, the system will store the calculated pressure value of the fan as the Pa REF INIT reference pressure. While initializing, the airflow and pressure on F1 is displayed. 14 FILTERS HOURS 0000 Set the hours after which to change or clean the filters. Refer to the preventive maintenance section. If the value configured will be higher than 0, then an alarm message requiring to change or clean the filter will appear when the counter of the filters hours will exceed this parameter 15 ALARM RESET? N Only if alarm pending: will reset the control board and thus resetting the alarms. 16 END SETUP Base setup in constant torque mode (TQ) 1 FILTERS RESET? N Only if the filters hours parameter (see here below) has been set to a value higher than 0. Reset the counter for the filters hours. To do when then filters have been cleaned or changed. 2 LANGUAGE: GB Language selection menu 3 HEATING T? 20 If a post-heating coil is installed, enter the post-heating T setpoint 4 COOLING T? 17 If a post-cooling coil is installed, enter the post-cooling T setpoint 5 FREECOOL T? 15 6 COMFORT T? 20 Free cooling setpoint; comfort control strategy will define if this is either a supply air or an extract air temperature setpoint (see advanced setup). If automatic changeover between heating and cooling enabled (see changeover parameter in advanced setup), enter the comfort T setpoint. 7 WORKING MODE: TQ Select constant torque mode (TQ) 8 %TQ K1? 0000 Setpoint 1 of maximum torque for supply fan (will be activated if position I on RC is selected or if contact between terminals K1 and + 12V is closed on TAC5 circuit) 24

25 9 %TQ K2? %TQ K3? 0000 Setpoint 2 of maximum torque for supply fan (will be activated if position II on RC is selected or if contact between terminals K2 and + 12V is closed on TAC5 circuit) Setpoint 3 of maximum torque for supply fan (will be activated if position III on RC is selected or if contact between terminals K3 and + 12V is closed on TAC5 circuit) 11 %EXH/SUP 100% Enter the ratio between exhaust (EXH) and supply (SUP) airflow to create over, under or even pressure. 12 CONFIG TIME? y Select Y to set the hour and date SET TIME: HH:MM Enter the time 12.2 SET TIME: DD/MM/YY Enter the date 13 TIME SEG MENT? Y Select y to activate the time channel 13.1 TIME 1: --:-- Enter channel1 starting time. If the time slot is empty, it is inactive SUPPLY: 0000 m³h Enter supply airflow (0000 = fan stop) EXHAUST: 0000 m³h Enter exhaust airflow (0000 = fan stop) 13.2 TIME 2: --: TIME 3: --: TIME 4: --:-- Enter channel2 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel3 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel4 starting time. If empty the time slot is inactive. Same principle as for channel DAY OFF: Y Select y if you wish to activate the day off option MONDAY: AUTO TUESDAY:... For MONDAY select AUTO (normal time slot setup is active) or OFF (no ventilation) Make the same selection (AUTO/OFF) or the remaining days of the week 14 FILTERS HOURS 0000 Set the hours after which to change or clean the filters. Refer to the preventive maintenance section. If the value configured will be higher than 0, then an alarm message requiring to change or clean the filter will appear when the counter of the filters hours will exceed this parameter 15 ALARM RESET? N Only if alarm pending: will reset the control board and thus resetting the alarms. 16 END SETUP 25

26 Base setup in demand control 0-10V (LS) 1 FILTERS RESET? N Only if the filters hours parameter (see here below) has been set to a value higher than 0. Reset the counter for the filters hours. To do when then filters have been cleaned or changed. 2 LANGUAGE: GB Language section menu 3 HEATING T? 20 If a post-heating coil is installed, enter the post-heating T setpoint 4 COOLING T? 17 If a post-cooling coil is installed, enter the post-cooling T setpoint 5 FREECOOL T? 15 6 COMFORT T? 20 Free cooling setpoint; comfort control strategy will define if this is either a supply air or an extract air temperature setpoint (see advanced setup). If automatic changeover between heating and cooling enabled (see changeover parameter in advanced setup), enter the comfort T setpoint. 7 WORKING MODE: LS Select Demand control 0-10V (LS) 8 V min? 01.0 V Set the minimum voltage for the signal output from the sensor 9 V max? 10.0 V Set the maximum voltage for the signal output from the sensor 10 m³h Vmin: 0100 Set the airflow corresponding to the minimum voltage 11 m³h Vmax: 2000 Set the airflow corresponding to the maximum voltage 12 %EXH/SUP: 100% 13 % on K3? 100% Enter the ratio between exhaust (EXH) and supply (SUP) airflow to create over, under or balanced pressure. Set the desired sleep factor (a lower operating rate for the unit due to e.g. low occupancy) that will be activated by button III 13 CONFIG TIME? N Select Y to set the hour and date SET TIME: HH:MM Enter the time 14.2 SET TIME: DD/MM/YY Enter the date 15 TIME SEG MENT? Y Select Y to set the hour and date TIME 1: --:-- Enter channel1 starting time. If the time slot is empty, it is inactive. For channel1, enter coefficient (%) applied to the base link configured between V value and setpoint value If LS mode with only one 0-10 V signal (default) or with 2 signals to control the supply airflow SET VAL. LS 000% (cfr m³/h Vmin and m³/h Vmax in setup OR cfr %TQ Vmin and %TQ Vmax in setup). Select 000 to stop both supply and exhaust fans %EXH/SUP 100% Select the ratio between exhaust and supply. Enter coefficient (%) applied for supply fan(s) to the If LS mode with one 0-10 V signal for supply and one 0-10 V signal for exhaust (via advanced setup) LS on SUP 000% LS on EXH 000% base link configured between V value and setpoint value (cfr m³/h Vmin and m³/h Vmax in setup OR cfr %TQ Vmin and %TQ Vmax in setup) Enter coefficient (%) applied for supply fan(s) to the base link configured between V value and setpoint value (cfr m³/h Vmin and m³/h Vmax in setup OR cfr %TQ Vmin and %TQ Vmax in setup) 26

27 15.2 TIME 2: --: TIME 3: --: TIME 4: --:-- Enter channel2 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel3 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel4 starting time. If empty the time slot is inactive. Same principle as for channel DAY OFF: Y Select y if you wish to activate the day off option MONDAY: AUTO TUESDAY:... For MONDAY select AUTO (normal time slot setup is active) or OFF (no ventilation) Make the same selection (AUTO/OFF) or the remaining days of the week 16 PRESSURE ALARM? Y Optional, select Y to configure the pressure alarm P SUP: P EXH: 200 Enter the allowed pressure increment for the supply airflow, beyond which the pressure alarm will trip. Enter the allowed pressure increment for the exhaust airflow, beyond which the pressure alarm will trip INIT Pa REF? Y Initialization of the pressure reference for the alarm. Filters should be clean m³h INIT: 0000 xxxx m³h / xxx Pa Enter the nominal airflow, same for supply and exhaust, for the initialization of the reference pressure. After +/-1 minute, the system will store the calculated pressure value of the fan as the reference pressure Pa REF INIT While initializing, the airflow and pressure on F1 is displayed. 17 FILTERS HOURS 0000 Set the hours after which to change or clean the filters. Refer to the preventive maintenance section. If the value configured will be higher than 0, then an alarm message requiring to change or clean the filter will appear when the counter of the filters hours will exceed this parameter 18 ALARM RESET? N Only if alarm pending: will reset the control board and thus resetting the alarms. 19 END SETUP NB : If Demand Control LS is based on torque modulation TQ (only relevant for units equipped with backwards fans without KIT CA), the same steps apply but for steps 8 and 9, % TQ is entered instead of m³/h. 27

28 Base setup in constant pressure mode (CPs) 1 FILTERS RESET? N Only if the filters hours parameter (see here below) has been set to a value higher than 0. Reset the counter for the filters hours. To do when then filters have been cleaned or changed. 2 LANGUAGE: GB Language section menu 3 HEATING T? 20 If a post-heating coil is installed, enter the post-heating T setpoint 4 COOLING T? 17 If a post-cooling coil is installed, enter the post-cooling T setpoint 5 FREECOOL T? 15 6 COMFORT T? 20 Free cooling setpoint; comfort control strategy will define if this is either a supply air or an extract air temperature setpoint (see advanced setup). If automatic changeover between heating and cooling enabled (see changeover parameter in advanced setup), enter the comfort T setpoint. 7 WORKING MODE: CPs Select Constant pressure (CPs) 8 CP on SUPPLY 9 %EXH/SUP 100% Select in which duct(s) the pressure sensor(s) is (are) placed. Supply duct or exhaust duct or both (SUP+EXH). If not CP on SUP+EXH, type in ratio between exhaust (EXH) and supply (SUP) airflow. This will create over, under or even pressure 10 % on K3? 100% If not CP on SUP+EXH - a.k.a. sleep factor 11 CONFIG TIME? y Select Y to set the hour and date SET TIME: HH:MM Enter the time 11.2 SET TIME: DD/MM/YY Enter the date 12 TIME SEG MENT? Y Select Y to set the hour and date TIME 1: --:-- Enter channel1 starting time. If the time slot is empty, it is inactive If CP mode on supply OR exhaust SET VAL. CP 000% Enter coefficient (%) applied to the pressure assignment defined in the basic setup. Select 000 to stop both supply and exhaust fans %EXH/SUP 100% Select ratio between exhaust and supply. CP on SUP 000% If CP mode on SUPPLY +EXHAUST CP on EXH 000% Enter coefficient (%) applied to the supply pressure assignment defined in the basic setup. Select 000 to stop both supply and exhaust fans. Enter coefficient (%) applied to the exhaust pressure assignment defined in the basic setup. Select 000 to stop both supply and exhaust fans 12.2 TIME 2: --: TIME 3: --: TIME 4: --:-- Enter channel2 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel3 starting time. If empty the time slot is inactive. Same principle as for channel1 Enter channel4 starting time. If empty the time slot is inactive. Same principle as for channel1 28

29 12.5 DAY OFF: Y Select y if you wish to activate the day off option MONDAY: AUTO TUESDAY:... For MONDAY select AUTO (normal time slot setup is active) or OFF (no ventilation) Make the same selection (AUTO/OFF) or the remaining days of the week 13 INIT CP REF? Y Select Y to define the pressure reference To initialize the CP reference automatically via the airflow. INIT via AIRFLOW INIT via PRESSURE To initialize the CP reference manually with the pressure value. if CP on SUPPLY or SUP+EXH if CP on SUPPLY or 13.2 Enter nominal supply airflow to determine INIT SUP 0000 m³h SUP REF? 0.00V SUP+EXH, enter the pressure assignment value assignment pressure CP for the supply air 13.3 if CP on EXHAUST or SUP+EXH, enter nominal exhaust airflow to determine assignment pressure CP INIT EXH 0000 m³h EXH REF? 0.00V if CP on EXHAUST or SUP+EXH, enter the pressure assignment value for the extract air INIT SUP xxxx m³h INIT EXH x.x V 13.4 INIT SUP xx.x V INIT EXH xxxx m³h 14 FILTERS HOURS 0000 Set the hours after which to change or clean the filters. Refer to the preventive maintenance section. If the value configured will be higher than 0, then an alarm message requiring to change or clean the filter will appear when the counter of the filters hours will exceed this parameter. 15 ALARM RESET? N Only if alarm pending: will reset the control board and thus resetting the alarms. 16 END SETUP NB : If Constant pressure regulation (CP) instead is based on torque modulation (only relevant for models with backward fans, without KIT CA), the same steps apply but for steps 13 and 14, % TQ is entered instead of m³/h. 29

30 6.1.2 ADVANCED SETUP FOR RC The advanced Setup menu is used to enable specific features or to modify default settings. This must be done by an accredited technician. The order of the table below corresponds to the sequence in RC. A dedicated training is required for access to this menu group. The access to this menu can be blocked (see menu: 46). To enter advanced setup, press SETUP and ENTER simultaneously until ADVANCED SETUP appears on the screen. Make selections via the buttons, then press ENTER to confirm. Numbers are entered digit by digit. Selecting the master is necessary to determine which interface will control the unit. The selected master can be either: I/O inputs, the remote control (RC) or the graphical remote control (GRC). 1 ENTER ACCESS 2 CODE 0000 If password access is enabled, enter the access code to open the advanced setup configuration. 3 MODBUS CONFIG?Y If the unit is connected via SAT Modbus, select Y to enter MODBUS communication configuration mode. 3.1 ADDRESS: 01 Enter the Modbus address of the TAC5 unit 3.2 BAUDRATE 9600 Select Baudrate: Bauds 3.3 PARITY: N Select Parity: N (none) E (even) O (odd) 4 LAN CONFIG?Y If unit is connected via SAT ETHERNET, select Y to configure the Ethernet communication settings 4.1 IP CNFG? MANUAL Enter Ethernet communication configuration mode. Select MANUAL to enter a static IP address. Select DHCP if the IP address of the unit is assigned dynamically Ip addr? 1/4 192 Enter the static IP address. 1st increment of 4: enter Ip addr? 2/4 168 Enter the static IP address. 2nd increment of 4: enter Ip addr? 3/4 001 Enter the static IP address. 3rd increment of 4: enter Ip addr? 4/4 001 Enter the static IP address. 4th increment of 4: enter netmask? 1/4 255 Enter the netmask. 1st increment of netmask? 2/4 255 Enter the netmask. 2nd increment of netmask? 3/4 255 Enter the netmask. 3rd increment of netmask? 4/4 255 Enter the netmask. 4th increment of gateway? 1/4 000 Enter the gateway. 1st increment of gateway? 2/4 000 Enter the gateway. 2nd increment of gateway? 3/4 000 Enter the gateway. 3rd increment of gateway? 4/4 000 Enter the gateway. 4th increment of 4 30

31 5 CONTROL BY RC? Y If setup and control features were not made via RC, but via Modbus, Wi-Fi, KNX or Ethernet communi-cation, it is possible here to switch control to the RC. 6 STOP FAN IF 7 V<Vlow? Y If in LS mode, stop fans if actual 0-10 V signal value < Vlow? 8 Vlow: 00,8 V If in LS mode, enter Vlow value to stop fans if actual 0-10 V signal value < Vlow 9 V>Vhigh? N If in LS mode, stop fans if actual 0-10 V signal value > Vhigh? 10 Vhigh: 10,0 V If in LS mode, enter Vhigh value to stop fans if actual 0-10 V signal value > Vhigh V on K3? Y If in LS mode, possibility to use a 2nd sensor which will be connected to K3 input FLOW? EXHAUST Select the airflow that the 2nd sensor will control: EXHAUST (default): possibility to run exhaust and supply airflows separately. Supply airflow rate via a 0-10 V signal connected to K2, and exhaust airflow rate via another 0-10 V signal connected to K3. The link airflow rate/signal value must be the same. SUPPLY: the signal considered for the LS link will be the maximum between the voltage on K2 coming from the 1st sensor and the voltage on K3 coming from the 2nd sensor. Exhaust airflow rate will still be given by the ratio %EXH/SUP. 12 SPEED CP? 10 If in CP mode, configuration of the reaction speed of the CP algorithm. 10 is the default value and is the highest reaction speed. Each -1 increment corresponds to a doubling of the reaction time (10 = T, 9 = 2xT, 8 = 4xT,...). The default value is determined for most ducting applications, only special applica-tions (e.g. constant pressure in a room) require changing this parameter. 13 LOGIC? NEGATIVE If in Constant Pressure (CP) mode: Negative logic: - airflow drops when signal on K2 > set point - airflow rises when signal on K2 < set point Positive Logic: - airflow rises when signal on K2 > set point - airflow drops when signal on K2 < set point 14 PRESSURE ALARM 15 STOP FAN? N If in CA or LS mode, possibility to stop the fans in case of pressure alarm. When fans are stopped, press RESET to restart the fans. 16 START TORQUE? 17 02% Possibility to modify the fan s starting torque (2% default). 18 FANS OFF Y Disable the possibility to stop the fans using the RC (remote control) via K1/K2/K3 on TAC5 circuit. This feature corresponds to disabling the soft stop function: - If RC master: the OFF key is disabled. - If TAC5 master: -CA mode: if no entries connected to K1/K2/K3 then K1 airflow is activated. - LS or CP Mode: if K1 entry not connected to +12 V, then control will operate as if K1 was connected to +12V. 19 BOOST CONFIG? Y BOOST config menu 31

32 19.1 SUPPLY? xxx m³h Boost supply airflow EXHAUST? xxx m³h Boost extract airflow BOOST ON? CONTACT Select the method to enable boost: CONTACT (default): boost enabled by IN9 contact. RH: boost enabled when a percentage of Relative Humidity (%RH) threshold has been reached. This %RH is measured by a 0-10 V sensor connected on K If boost on RH (Humidity sensor) RH ON? 060% If boost on RH RH OFF? 040% If boost on RH VMIN RH K3? 02,0V If boost on RH VMAX RH K3? 09,5V If boost on RH RH VMIN? 002% If boost on RH RH VMAX? 095% Enter the percentage of Relative Humidity threshold to enable boost. Enter the percentage of Relative Humidity threshold to disable boost. Enter the minimum voltage of the %RH sensor connected on K3. Enter the maximum voltage of the %RH sensor connected on K3. Enter the %RH corresponding to the minimum voltage given by the output of the %RH sensor on K3. Enter the %RH corresponding to the maximum voltage given of the %RH sensor on K3. 20 WHEEL CONFIG? N Only for RX units. Configure rotary wheel speeds? 20.1 WHEEL RPM? 10 Rotation speed setpoint 20.1 AF WHEEL RPM? 02 Enter the wheel rotation speed during frost protection cycle. 21 FIRE AL CONFIG? N Configure fire alarm mode 21.1 CONTACT IN3? N.O Fire alarm input: IN3 is N.O or N.C. (normally open or normally closed) NO: alarm is enabled when in3 contact closed NC: alarm is enabled when in3 contact is opened 21.1 SUPPLY? 0000 m³h Enter supply airflow in event of fire; close IN7 to activate 21.1 EXHAUST? 0000 m³h Enter exhaust airflow in event of fire; close IN8 to activate 22 BYPASS T VALUES 23 T1: 0 24 T2: SET m³h IF 26 BYPASS OPEN? N Setpoints enabling/disabling the bypass. Open bypass if all the following conditions are met: Outdoor T (T1) < indoor T (T2). Outdoor T (T1) > T1. Indoor T (T2) > T2. Closing bypass if one of the conditions is met: Outdoor T (T1) > T indoor (T2). Outdoor T (T1) < T1-1 C. Indoor T (T2) < T2-2 C. Enter supply and exhaust airflow rates (or percentages of maximum fan torque if torque modulation instead of airflow) when bypass is open. If you select Y, then the airflows/torques are independent of the airflows/torques when bypass is closed (Closed bypass airflows/torques are a function of modes, K1, K2, K3 status or Modbus commands). 32

33 26.1 SUPPLY? 0000 m³h Supply airflow when bypass is open EXHAUST? 0000 m³h Extract airflow when bypass is open. 27 BYPASS%= FREECOOL If modulating bypass type (not available for ON/OFF): Function of modulating bypass: FREECOOL: free cooling by modulating the bypass according to the difference between the measured T in the supply duct (T5) and the free cooling setpoint temperature configured in base setup. A-FREEZE: frost protection of the plate heat exchanger by modulation of the bypass to keep the T of the exhaust air (T3) above AF REC setpoint (see below). AF-FREEC: combines the functionalities of FREECOOL and A-FREEZE. 28 STOP IF T5<5 C? N Possibility to stop the fan if the supply air temperature falls below 5 C. 29 AF? Y Possibility to enable (Y) of disable (N) the supply airflow down regulation as the heat exchangers frost protection. Feature unavailable unless KWin, BAin and modulating bypass are installed CONFIG AF? N Frost protection configuration menu T LOW AF: 1 C Enter low T value for the frost protection function T HIGH AF: 5 C Enter high T value for the frost protection function. Above this value there will be no airflow reduction AF STOP FAN? Y Possibility to stop the fans if supply air T < T LOW. 30 AF KWin ON T3? Y 31 CONFIG PID KW? N If KWin present: Choose, for the frost protection control, whether to compare the frost protection T setpoint with T3 (default) or T5 T sensor Enter Setpoint T to start frost protection cycle (for RX units, or for PX units with KWin or BAin installed or with a modulating bypass set to either A-FREEZE or AF-FREEC 31.1 KWin PID PB=005 KWin: possibility to modify PID parameter (PB) 31.2 KWin PID Ti=030 KWin: possibility to modify PID parameter (Tr) 31.3 KWin PID Td=011 KWin: possibility to modify PID parameter (Td) 31.4 KWoutPID PB=005 KWout: possibility to modify PID parameter (PB) 31.5 KWoutPID Ti=030 KWout: possibility to modify PID parameter (Tr) 31.6 KWoutPID Td=011 KWout: possibility to modify PID parameter (Td) 33

34 33 NV SPEED AF NV +4,0 C If Post Heating (NV) installed: Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default value is 5 for a normal reaction speed. Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application. Temperature threshold for the internal heating coil (NV) frost protection: if the temperature of NV drops below this threshold, then the frost protection cycle will be enabled. 35 SAT BA? Yes Select yes if an optional SAT BA/KW board is installed for the control of external coils. Select coil type(s) regulated by SAT BA/KW: BA+, BA-, BA+/-, BA+/BA-, KW, BA-/ 35.1 TYPE BA? KW/BA- KW, BAin, BAin/BA+, BAin/BA+-, KW 0-10V, KW 10/BA- Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default value is 5 for a normal reaction speed. Each increment of -1 corresponds to a doubling of the If NV/BA+ option installed NV/BA+ SPEED 05 reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application AF BA+ = +4,0 C Temperature threshold for post heating frost protection : if the temperature of the post heating coil drops below this thresh-old, then the frost protection cycle will be activated If BA- option installed BA- SPEED 05 Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default value is 5 for a normal reaction speed. Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application AF BA- +4,0 C Temperature threshold for BA- or BAin frost protection: if the temperature of BA-/BAin drops below this threshold, then the frost protection for BA-/BAin will be enabled. 36 CHANGE OVER? N When both postheater and postcooler are present, select whether to enable the automatic change over which will override the comfort parameter to T2 (see«comfort»). This will allow the automatic change over between heating and cooling If change over enabled NEUTRAL BAND 36.2 If change over An automatic change over from heat to cool will automatically occur when the HIGH 4.0 enabled measured temperature on the extract air will exceed this band If change over An automatic change over from cool to heat will automatically occur when the LOW 2.0 enabled measured temperature on the extract air will fall under this band. 37 COMFORT ON T5 If post-heating or post-cooling coil(s) are installed, possibility to control supply (T5) or exhaust/room (T2) temperature. Configuration of the reaction speed of the post-heating/cooling. 8 is the default value and is the normal reaction speed. Each -1 increment slows down and 37.1 If comfort on T2 COMF. SPEED? 08 corresponds to a doubling of the reaction time (8 = T, 7 = 2xT, 6 = 4xT,...). Each +1 increment speeds up and corresponds to a diving of the reaction time (8 = T, 9 = T/2, 10 = T/4). 34

35 37.2 If comfort on T2 T5 MIN 15 C 37.3 If comfort on T2 T5 MAX 28 C Lower limit of the temperature reached in supply flow (T5). Protection to prevent excessively cold air. Upper limit of the temperature reached in supply flow (T5). Protection to prevent excessively warm air. 38 Out 1 Pa F1 39 Out 2 Pa F1 40 POST VENT? N 0-10 V OUT1 output connection: airflow/torque or pressure on one fan (default value is airflow/torque on fan F1) V OUT2 output connection: airflow/torque or pressure on one fan (default value is pressure on fan F1). Enable post-ventilation feature (allow fans to run for a certain amount of time after softstop is enabled). Caution: if KWin and/or KWout, and/or SAT BA/KW are installed, the post-ventilation feature is automatically enabled. It is then impossible to set this to NO TIME PV 0090 sec Enter post-ventilation time (in seconds). Minimum = 90 seconds. 41 FAN RUN TIME? N Enable measurement of fan operating time. The purpose is to report a maintenance alarm and/or to stop the fans after a period of operation TIME RESET? N Reset operating time counter to Ø 41.2 DISPLAY TIME? N Enable display of operating time 41.3 SERVICE ALARM? N Enable maintenance alarm after a certain operating time TIME? h Enter operating time limit (in hours) to generate a maintenance alarm STOP FAN? N Enable fan stop alarm after a certain operating time? TIME? h Enter operating time limit (in hours) to generate a fan stop alarm. The fans will be stopped after this limit is elapsed. 42 DISPLAY ALARM ONLY? N Possibility to display only the alarms on the graphic screen. If no alarm is activated, then «Vent OK» is displayed. 43 K-FACTOR? xxx Only with backward fans and kit CA: possibility to change the K-factor parameter of the fan. 44 SENSOR dpa? x Only with backward fans and kit CA: Select the pressure sensor type: 0: V=0-1000Pa, 1: 0-10V=0-1000Pa, 2: V=0-500Pa, 3: 0-10V=0-500Pa, 4: V=0-300Pa, 5: 0-10 V=0-300Pa, 6: V=0-3000Pa, 7: 0-10 V=0-3000Pa, 8: 0-10V=0-2000Pa 45 ACCESS CODE? N Possibility to activate an access code to allow access to setup and advanced setup CODE 0000 Enter access code to setup and advanced setup (4 decimals). 46 UNIT CONFIG? N Possibility to change the default airflow unit 46.1 AIRFLOW? m³/h Airflow unit: m³/h (default) or l/s. 47 FACTORY RESET? N Reset all values to factory settings. 48 END SETUP End of advanced setup. 35

36 6.1.3 VISUALISATION MENU Allows the operating status and values to be read. Used for performance checks and for generally checking values, settings, power consumption, etc. No values can be altered in this menu group. To enter the visualization menu: Press the left button on the figure so that the SETUP LED lights. To navigate the circular menu, press then the button to go through the menu, or press to go back. 1 REC TYPE The ID code of the unit. 2 MODBUS ADDR:001 If SAT MODBUS is connected, the current configured Modbus address. 3 NV? YES Internal hydraulic post-heating battery configured. 4 KWout? YES Internal electrical post-heating coil configured. 5 KWin? YES Internal electrical pre-heating coil configured. 6 BA+? YES External hydraulic post-heating battery configured. 7 BA-? YES External hydraulic post-cooling battery configured. 8 WHEEL? YES For rotary heat exchanger (RX). 9 BYPASS% YES Counter flow heat exchanger (PX) with modulating bypass 10 CONTROL: RC 11 WORKING MODE CA 12 SET VAL m³h Indicates the current control mode: FATAL ERROR: Fans are stopped; FIRE ALARM; RC: remote control RC TAC5; EXTERNAL CONTACT channel: K1-K2-K3 contacts; AUTO: TIMESCHEDULER; MODBUS; BYPASS; BOOST; KNX Current Working Mode: OFF, CA, LS, CP, TQ, INIT (temporary mode during initialization of pressure alarm or of CP reference). If CA or LS mode (with no signal on K3), current setpoint for supply. [m³/h, l/s for CA mode; m³/h, l/s or % unit for LS mode]. 13 SET VAL. 070 %TQ If TQ mode, current setpoint for supply. 14 SET m³h K2=2000 If LS mode with 1 signal on K3 for exhaust, current setpoint for supply. [m³/h, l/s or %]. 15 SET m³h K3=2000 If LS mode with 1 signal on K3 for exhaust, current setpoint for exhaust. [m³/h, l/s or %]. 16 SET m³h Kx= SET VAL. 04.0V If LS mode with 1 signal on K3 for supply, current setpoint for supply. [m³/h, l/s or %]. N.B.: Kx is K2 if the voltage on K2 input is greater than the that on K3, otherwise Kx is K3. If CP on SUPPLY mode, current setpoint in Volt for supply. If CP on EXHAUST mode, current setpoint in Volt for exhaust. 18 SET VAL. K2=04.0V If CP on SUPPLY+EXHAUST mode, current setpoint in Volt for supply. 36

37 19 SET VAL. K3=04.0V If CP on SUPPLY+EXHAUST mode, current setpoint in Volt for exhaust. 20 COMFORT SENS. T2 If COMFORT ON T2 is set, indicates which sensor is currently in use for the control of the comfort temperature. It will be normally T2 sensor unless the supply T limit have been reached, then, T5 will be used to re-enter within the limits. 21 COMFORT T =22 C Current temperature setpoint. 22 CHANGE OVER:HEAT 23 %EXH/SUP 100% If the automatic changeover between heating and cooling is enabled, indicates whether heating or cooling is currently running Ratio between exhaust (EXH) and supply (SUP) airflow. (Not visible if LS mode with 1 signal on K3 for exhaust or CP on SUPLLY+EXHAUST). 24 Pa ALARM SUPPLY: In CA or LS mode, values for the supply fan(s) on initialisation of the calculated pressure alarm. 25 m3h:1998 Pa: Pa ALARM EXHAUST: In CA or LS mode, values for the exhaust fan(s) on initialisation of the calculated pressure alarm. 27 m3h:2001 Pa: WHEEL 10 RPM If RX unit, the setpoint for the rotary speed in RPM. 29 ACTUAL VALUES The following menu will display the actual value for flow/pressure/status/t sensor/inputs/outputs. 30 SUPPLY 1999 m³h Current supply airflow. [m³/h, l/s or %]. 31 SUPPLY 144 Pa Current calculated supply pressure in Pascal. (Not visible in TQ mode or in LS/CP mode with the fan torque modulation instead of airflow). 32 EXHAUST 2001 m³h Current exhaust airflow. [ m³/h, l/s or %]. 33 EXHAUST 123 Pa 34 dpa SUP 144 Pa 35 dpa EXH 123 Pa Current calculated exhaust pressure in Pascal. (Not visible in TQ mode or in LS/CP mode with the fan torque modulation instead of airflow). In CPs on Supply or on Supply+Ehaust and if Modbus pressure sensors are used, indicate the pressure value read by this sensor on the supply duct In CPs on Exhaust or on Supply+Ehaust and if Modbus pressure sensors are used, indicate the pressure value read by this sensor on the supply duct 36 K1 OPEN Status of input K1: OPEN / CLOSE. 37 K2 02.3V 38 K3 03.1V 39 IN1 OPEN In LS or CP mode, displays the current voltage on the input K2. In CA and TQ mode, it shows the status: OPEN / CLOSE. In LS mode (with 1 signal on K3) or CP on SUPPLY+EXHAUST, displays the current voltage on the input K3. In CA and TQ mode: can be either OPEN or CLOSE. Status of input IN1: OPEN / CLOSE. If closed, this means that the contacts K1-K2-K3 are master and will control the unit. If open, the units can only by controlled by the RC 40 IN2 OPEN Status of input IN2: OPEN / CLOSE. If closed, this means that a pressure switch has triggered. 41 IN3 OPEN 42 IN4 OPEN Status of input IN3: OPEN / CLOSE. If closed, this means that a fire alarm is active. NB: this logic can be inversed, see advanced setup menu Status of input IN4: OPEN / CLOSE. If closed, this means that the bypass status is forced to be active regardless of the T T1 and T2 conditions. 43 IN5 OPEN Status of input IN5: OPEN / CLOSE. If closed, this means that the time scheduler is enabled. 44 IN6 OPEN Status of input IN6: OPEN / CLOSE. If closed, this means that the optional post-heating coil is disabled. 37

38 45 IN7 OPEN Status of input IN7: OPEN / CLOSE. If closed, in case of fire alarm, enables the supply fan(s). 46 IN8 OPEN Status of input IN8: OPEN / CLOSE. If closed, in case of fire alarm, enables the exhaust fan(s). 47 IN9 OPEN 48 IN10 OPEN 49 IN11 OPEN Status of input IN9: OPEN / CLOSE. If closed, force boost activation unless boost on RH has been se-lected in the advanced setup menu If SAT BA/KW optional satellite board for the control of external coils. Status of input IN10: OPEN / CLOSE. If closed, this means that the optional post-cooling coil is disabled. If SAT BA/KW optional satellite board for the control of external coils. Status of input IN11: either OPEN / CLOSE. If closed, the optional post-heating coil is disabled. 50 T1 11,9 C Displays the T T1 from outdoors in C. 51 T2 20,5 C Displays the T T2 from indoors in C. 52 T3 15,7 C Displays the T T3 to outdoors in C. Not for RX unit. 53 T4 22,3 C If optional internal hydraulic post-heating battery (NV), displays the T T4 for the frost protection of this battery, in C. 54 T5 18,1 C Displays the T T5 to indoors in C. 55 T7 22,2 C 56 T8 22,4 C If optional external hydraulic post-heating battery (BA+), displays the T T7 for the frost protection of this battery, in C. If optional external hydraulic post-cooling battery (BA-), displays the T T8 for the frost protection of this battery, in C. 57 BYPASS OFF Status of the bypass activation: ON/OFF. 58 A-FREEZE REC ON During frost protection of the heat exchanger or of the hydraulic batteries. 59 KWin 011 % If optional internal electrical preheater is installed, displays the current output to the coil. 60 KWout 043 % If optional internal electrical post-heating coil is installed, displays the current output to the coil. 61 KWext 100 % If optional external electrical post-heating coil is installed, displays the current output to the coil. 62 NV 03.1V If optional internal hydraulic post-heating coil is installed, displays the current output to the 3-way valve. 63 OUT7 02.1V If optional external hydraulic post-heating coil is installed, displays the current output to the 3-way valve. 64 OUT8 04.3V If optional external hydraulic post-cooling coil or external hydraulic preheater is installed, displays the current output to the 3-way valve. 65 TIME h If fan operating time counter feature is enabled (see advanced menu 37), shows the hours counted. 66 did/mm/yy hh:mm Displays the current time and date if time scheduler is configured 38

39 6.2 COMMISSIONING WITH GRC INTERFACE The GRC is organized into different sections, where each section contains one or more screens. Navigation principle: Use the left menu bar to switch between sections. Select the desired screen via the appropriate tab. Operating principle: White fields are (editable) while shaded fields are non-editable. Press on a field to change the value. A numeric keypad will be automatically displayed to enter an appropriate value. Press «Enter» to confirm. If the entered value is not valid (out of range), it is ignored and the previous value is saved. Press the drop-down menus to see the available options. Press the option to select HOME Home: Start-up screen - Select the language Returns automatically to the home page after 5 minutes if no action is taken. Or press the bottom left corner of the sidebar menu for the home page. 39

40 6.2.2 CONTROL Control: This section is used to control the unit and its content match the selected operating mode (CA/TQ/LS/CP). Available Functions: Display of the airflow control mode: FATAL ERROR: Fans are stopped; FIRE ALARM; RC: remote control RC TAC5; K1-K2-K3 contacts; AUTO: TIMESCHEDULER; GRC; BYPASS; BOOST. Possibility to select the ventilation control mode and fan speed: Auto position: control according to time slots. Manual position: Fan speed selection icon corresponding to electrical input K1-K2-K3. Only K1 and K3 (large and small fan icon respectively in figure 4) are available for LS and CP mode (see Setup context) where K1 is normal operation and K3 is a low operating rate (sleep factor). The current selection is indicated by the light green LED below the button. Status indication by means of red or green LEDs Choice and display of the ventilation level (LED below the fan buttons) Display of the current actual airflows to the right of the screen. After pressing the + button, control via the Boost (see advanced setup boost), Bypass (see advanced setup bypass), Heating (if post-heating option is present) and Cooling buttons (if post-cooling option is present). Auto for automatic changeover between heating and cooling (if both post-heating post-cooling option are present) Visualisation Menu Displays a basic diagram of the unit with useful information about the ventilation unit. The screen automatically adapts based on the state of the unit and the options installed. The following information is displayed: The inlet and outlet temperatures of each flow. The supply and extract air flows. The opening and closing of the bypass, frost protection and the valves (option) (red/dark green = OFF; light green = ON). The different components installed in the unit and their status (options: KWin, KWout, hot water battery NV). The different external components and their status w(options: SAT TAC5 BA/KW). Two alarm diodes that indicate the current alarm status (red = default, green = OK). Click on one of these LEDs to access the Alarms tab directly. 40

41 Alarms Menu This screen is used to display status of the different alarms Setup Menu Used to view the different setpoints (CA/TQ/LS/CP/OFF mode, supply flow and temperature requested as well as pressure alarms) configured in the SETUP currently in operation m³/h+t Menu The title of this screen may be l/s+t according to the unit flow selected. Visualisation of: The following information is displayed: The airflows and pressures for supply and exhaust All the temperatures measured by the sensors of the unit The operating time of the unit. The filters hours counter I/O status Menu Shows a summary of the status of all inputs and outputs on the TAC5 control board Configuration Menu Shows the factory configuration, i.e. the type of unit as well as the different options installed in it. It also shows the software version of the TAC5 circuit. 41

42 6.2.3 SETUP Used to configure the setting of the fan s operating mode, the pressure alarm and the comfort temperatures (if post-heating or post-cooling or free cooling option is installed) in different screens which vary depending on the selected mode Main Menu Select the desired working mode in the selection box Constant Airflow Mode (CA) Settings are made via editable fields for these parameters: %Ex/Su Airflow 1 Airflow 2 Airflow 3 Enter the ratio (%) between exhaust and supply airflows Enter supply airflow 1. Enabled if contact between terminals K1 and + 12V is closed on TAC5 circuit, or if fan1logo is selected in the GRC TAC5 control screen Enter supply airflow 2. Enabled if contact between terminals K2 and + 12V is closed on TAC5 circuit, or if fan2logo is selected in the GRC TAC5 control screen Enter supply airflow 3. Enabled if contact between terminals K3 and + 12V is closed on TAC5 circuit, or if fan3logo is selected in the GRC TAC5 control screen The exhaust airflow is calculated automatically based on %Ex/Su Constant Torque Mode (TQ) Settings are made via editable fields for these parameters: %Ex/Su %TQ 1 %TQ 2 %TQ 3 Enter the ratio (%) between exhaust (fans F3, F4) and supply (fans F1, F2) airflows. Enter percentage 1 of maximum fan torque for supply. Enabled if contact between termi-nals K1 and + 12V closed on TAC5 circuit, or if fan1logo is selected in the GRC TAC5 control screen Enter percentage 2 of maximum fan torque for supply. Enabled if contact between termi-nals K2 and + 12V closed on TAC5 circuit, or if fan2logo is selected in the GRC TAC5 control screen Enter percentage 3 of maximum fan torque for supply. Enabled if contact between terminals K3 and + 12V closed on TAC5 circuit, or if fan3logo is selected in the GRC TAC5 control screen The percentage of maximum fan torque for exhaust is calculated automatically based on %Ex/Su. 42

43 Demand Control 0-10V Mode (LS) Settings are made via editable fields for these parameters: V min V max Vmin minimum voltage maximum voltage Airflow rate corresponding to Vmin Vmax Airflow rate corresponding to Vmax (can be < or > to «flow Vmin»). Stop fans if V<Vlow? Vlow Stop fans if V>Vhigh? Vhigh 0-10 V Signals quanti-ty Possibility to stop the fans automatically if 0-10V signal < Vlow. Press LED to turn this feature on (the LED turns green). Appears only if the feature is enabled. Enter threshold value Vlow (Vlow < Vmin). Possibility to stop the fans automatically if 0-10V signal > Vhigh. Press LED to turn this feature on (the LED turns green). Appears only if the feature is enabled. Enter threshold value Vhigh (Vhigh > Vmax). Select if only one 0-10 V signal is connected on K2 input. If another 0-10 V signal is connected on K3, then select 2. If 0-10 V Signals quantity = 1 %Exhaust /Sup Select the airflow ratio between the exhaust airflow (fans F3, F4) and supply airflow (fans F1, F2) % on K3 A sleep factor, where the unit enters a low operating rate. Enter multiplier (%) of the LS link when contact between terminals + 12V and K3 on TAC5 circuit is closed, or if in position «smallest fan» on the control screen. If 0-10V Signals quantity = 2 Signal 2 (K3) on Choose whether the supply or exhaust airflow will control Signal CP Mode Settings are made via editable fields for these parameters: CP on %Exhaust/Supply % on K3 Init pressure «Supply» or «Exhaust» or «Supply and Exhaust». Select in which airflow the pressure sensor is placed. Enter the airflow ratio between the exhaust airflow (fans F3, F4) and supply airflow (fans F1, F2) Not applicable if CP on supply and exhaust. A sleep factor, where the unit enters a low operating rate. Enter multiplier (%) of the CP assignment when contact between terminals + 12V and K3 on TAC5 circuit is closed, or if in position «smallest fan» on the control screen. «Via flow rate» or «manually». Specify method to determine reference pressure. If Init pressure VIA AIRFLOW: TAC5 control automatically computes setpoint pressure value xx,x V xxxx m³h Start Last registered pressure setpoint (0.0 if never made). Non-editable in this type of initialization. To edit it directly, switch to manual initialization. Enter (nominal) airflow at which the pressure setpoint must be determined. Make sure that the panels on the unit are fully closed, with filters in place. Press «Start» to start initialization of Pa ref (optional if been made previously). Confirmation is required. If MANUAL Init pressure: enter pressure setpoint directly xx,x V Enter pressure setpoint value (converted in voltage according to the pressure sensor characteristics). 43

44 Pressure Alarm Menu Used in Constant Airflow (CA) or Demand Control0-10V (LS) mode to initialize the computed pressure alarm. Setting is done through editable fields for these parameters: Used in Constant Airflow (CA) or Demand Control0-10 V (LS) mode to initialize the computed pressure alarm. Settings are made via editable fields for these parameters: Pressure alarm? dp supply dp exhaust Pa ref init: Supply Exhaust Start Pressure alarm is optional. To activate pressure alarm, press the dark green LED (disabled), when LED turns bright green it is enabled. Setup Pa Alarm on supply side. Enter pressure increment (corresponding to the additional pressure required to reach the reference pressure on supply side) Setup Pa Alarm on exhaust side. Enter pressure increment (corresponding to the additional pressure required to reach the reference pressure on exhaust side) Reference pressure (Pa ref) determination. Before pressing start, specify the supply airflow to determine the reference pressure (exhaust airflow is determined by the «%Ex/Su» ratio. Pa ref for supply and exhaust are consequently different. Make sure that the panels of the unit are fully closed, with filters in place. Press «Start» to start initialization of Pa ref (optional if been made previously). Confirmation is required T Setpoint Menu This screen is visible only if there is post-heating or post-cooling or free cooling (with modulating bypass). Settings are made via editable fields for these parameters: The editable fields in this screen will be adapted according to the use of the automatic changeover between heating and cooling. When automatic changeover is not selected in the command bar are when there is no post-heating or post-cooling: Heating Cooling Free cooling Comfort setpoint T for heating Comfort setpoint T for cooling Comfort setpoint T for free cooling When automatic changeover is selected in the command bar and when there are post-heating and post-cooling: Comfort Comfort setpoint T Neutral band high Neutral band low Select the higher neutral band respect to the desired comfort setpoint. A change over from heat to cool will automatically occur when the measured temperature on the extract air will exceed this band. Select the lower neutral band respect to the desired comfort setpoint. A change over from cool to heat will automatically occur when the measured temperature on the extract air will fall under this band. 44

45 Filters Hours Menu Maximum Filters Hours Reset hours Set the hours after which to change or clean the filters. Refer to the preventive maintenance section. If the value configured will be higher than 0, then an alarm message requiring to change or clean the filter will appear when the counter of the filters hours will exceed this parameter. Button for resetting the counter for the filters hours. To do when then filters have been cleaned or changed ADVANCED SETUP Advanced Setup is used to enable specific features or to modify standard settings Main Menu This screen contains the following editable fields that permit the associated parameter to be changed: Start torque Soft stop allowed? OUT1 (0-10V) OUT2 (0-10V) Unit Possibility to modify the fan s starting torque (2% default). Disable the possibility to stop the fans using the RC (remote control) via K1/K2/K3 on TAC5 circuit. This feature corresponds to disabling the soft stop function: - If GRC master: the OFF key is disabled. - If TAC5 master: -CA mode: if no entries connected to K1/K2/K3 then K1 airflow is activated. - LS or CP Mode: if K1 entry not connected to +12V, then control will operate as if K1 was connected to +12V. To do this select N (Y is default value) Choice of information supplied by 0-10V OUT1 output connection: airflow/torque or pressure on one fan (default is airflow/torque on fan F1). Choice of information supplied by 0-10V OUT2 output connection: airflow/torque or pressure on one fan (default is pressure on fan F1). Choose airflow unit: m³/h (default) or l/s Parameter used only in CP mode CP speed CP Logic Configuration of the reaction speed of the CP algorithm. 10 default. Each -1 increment corresponds to a doubling of the reaction time (10 = T, 9 = 2xT, 8 = 4xT,...). The default value is determined for most ducting applications, only special applications (constant pressure in a room) require modification of this parameter. Configuration of CP mode operating logic: Negative logic: - airflow rate drops when signal on K2 > assignment value - airflow rate rises when signal on K2 < assignment value Positive Logic: - airflow rate rises when signal on K2 > assignment value - airflow rate drops when signal on K2 < assignment value 45

46 Boost Menu This screen is dedicated to the boost configuration. It contains the following editable fields that permit associated parameters to be changed: Supply Exhaust Boost on Enter supply airflow rate when Boost is enabled Enter exhaust airflow rate when Boost is enabled Select the method to enable boost: CONTACT (default): boost enabled by IN9 contact. RH: boost enabled when a percentage of Relative Humidity (%RH) threshold has been reached. This %RH is measured by a sensor where the 0-10 V output is connected on K3 input. If BOOST ON RH is selected Activation level Deactivation level Enter the percentage of Relative Humidity threshold to enable boost. Enter the percentage of Relative Humidity threshold to disable boost. Vmin Enter the minimum voltage given by the output of the %RH sensor connected on K3. Vmax Enter the maximum voltage given by the output of the %RH sensor connected on K3. RH@Vmin RH@Vmax Enter the %RH corresponding to the minimum voltage given by the output of the %RH sensor connected on K3. Enter the %RH corresponding to the maximum voltage given by the output of the %RH sensor connected on K Alarm Menu This screen is dedicated to the configuration special functions for alarms management. It contains the following editable fields that permit associated parameter to be changed: Stop fans if alarm Pa? IN3 contact / Fire alarm Supply Exhaust Xxxxxxx Possibility to stop the fans in the event of a pressure alarm (after cancelling the alarm, press RESET to restart the fans). Select how fire alarm is activated: entry IN3 is N.O or N.C (normally open or normally closed) NO: alarm is activated when in3 contact closed NC: alarm is activated when in3 contact is open See Troubleshooting section Fire alarm Supply airflow rate for external alarm IN7 Supply airflow rate for external alarm IN8 Possibility to enable a fan operating time counter feature. The purpose is to report a maintenance alarm and/or to stop the fans after a certain period of operation. Enabled if one of the 2 following operating time features is enabled. Time reset? Reset operating time counter to 0 Display time? Service alarm? xxxxh Stop fan? xxxxh Enable display of operating time Enable maintenance alarm after a specific operating time Enter operating time limit (in hours) to generate a maintenance alarm. Enable fan stop alarm after a specific operating time? Enter operating time limit (in hours) to generate a fan stop alarm. The fans will be stopped after this limit has elapsed. 46

47 Bypass Menu This screen is dedicated to the bypass configuration. It contains the following editable fields that permit associated parameters to be changed: T1 - T2 Set m³/h if the bypass is open? Supply Exhaust %Bypass mode Possibility to modify T setpoints to control opening/closing the bypass. Open bypass if all following conditions are met: Outdoor T (T1) < indoor T (S2). Outdoor T (T1) > T1. Indoor T (T2) > T2. Closing bypass if one of the conditions is met: Outdoor T (T1) > T indoor (S2). Outdoor T (T1) < T1-1 C. Indoor T (T2) < T2-2 C. Enter supply and exhaust airflow rates (or percentages of maximum fan torque if torque modulation instead of airflow) when bypass is open. If you select Y, then the airflows/torques are independent from the airflows/torques when bypass is closed (Closed bypass airflows/torques are a function of the working modes, K1, K2, K3 status or Modbus commands). Enter supply airflow rate when bypass open. Enter exhaust airflow rate when bypass open. If modulating bypass type: Modality of modulating bypass: - FREECOOL: free cooling from modulation of the bypass opening according to the difference between the measured T in the supply duct (T5) and the free cooling setpoint temperature configured in base setup. -A-FREEZE: frost protection of the plate heat exchanger from the modulation of the bypass opening to keep the T of the exhaust air at the exchanger output (T3) above AF REC setpoint (see below). - AF-FREEC: combines the functionalities of FREECOOL and Anti-FREEZE 47

48 Frost protection Menu This screen is dedicated to the configuration of the frost protection of the heat exchanger. It contains the following editable fields that permit associated parameters to be changed: Parameter used only in CP mode Setpoint KWin Preheat on T5 Select PID KWin Enter Setpoint T to start the anti-frost cycle with KWin. Choose, for the frost protection control, whether to compare the frost protection T setpoint with T3 (default) or T5 T sensor. Possibility to modify the PID parameters. CAUTION: these modifications can be destructive and should only be carried out by qualified personnel. possibility to modify PID parameter (PB) possibility to modify PID parameter (Tr) possibility to modify PID parameter (Td) Parameter used only in CP mode BAin Setpoint Enter Setpoint T to start the anti-frost cycle with BAin. If KWin and BAin options are not installed and, modulating bypass is installed with the selected bypass modality A-FREEZE or AF-FREEC Exchanger antifreeze Enter Setpoint T to start the frost protection cycle with modulating bypass. protection T If KWin and BAin options are not installed and, no modulating bypass is installed or the selected bypass modality is FREECOOL AF protection Possibility to enable (Y) or not (N) the heat exchanger s frost protection function active? by supply airflow down regulation. T Low AF Enter low T value for frost protection function. T High AF Enter high T value for frost protection function. Stop supply if T <T Low? Possibility to stop the fans if supply air T < T LOW. 48

49 KW/BA Menu This screen is dedicated to the configuration of the internal and external post-heating and/or post-cooling batteries. It contains the following editable fields that permit associated parameters to be changed: Post-vent.? Delay STOP FAN IF T5<5 C Select PID KWout NV speed Sat BA? BA+ speed BA+ AF BA- speed Enable the post-ventilation function (allow fans to run during a certain period after softstop is activated). Caution: if Preheat KWin and/or Post-heat KWout, and/or SAT BA/KW is installed, the post-ventilation function is automatically enabled. It is then impossible to set it to NO. Enter post-ventilation time (in seconds) Possibility to stop the fan if the supply air temperature falls below 5 C (only if temperature sensor T5 is wired) With KWout/KWext option: Possibility to modify the PID parameters. If NV option is installed: Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default 5 Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application. Select coil type(s) regulated by the SAT BA/KW: BA+, BA-, BA+/-, BA+/BA-, KW, BA-/KW, BAin, BAin/ BA+, BAin/BA+-, KW 0-10V, KW 10/BA- If BA+ option is installed: Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default 5 f Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application. If BA+ option is installed: Temperature threshold for BA+ frost protection: if the temperature of BA+ drops below this threshold, then the frost protection for BA+ will be enabled. If BA- option is installed: Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default value is 5 for a normal reaction speed. Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application. BA- AF COMFORT ON T5 If BA- option is installed: Temperature threshold for BA- or BAin frost protection: if the temperature of BA-/BAin drops below this threshold, then the frost protection cycle for BA-/BAin will be enabled. If post-heating or post-cooling coil(s) are installed, possibility to change if T is measured on supply (T5) or exhaust / room (T2). The temperature measured on the selected sensor is used to determine the deviation from the setpoint for regulating the heating or cooling power. If comfort on T2 COMFORT SPEED T5 MIN T5 MAX Configuration of the reaction speed of the post-heating/cooling. 8 default. Each -1 increment slows down and corresponds to a doubling of the reaction time (8 = T, 7 = 2xT, 6 = 4xT,...). Each +1 increment speeds up and corresponds to a diving of the reaction time (8 = T, 9 = T/2, 10 = T/4). Lower limit of supply air temperature (T5). Upper limit of supply air temperature (T5). 49

50 Admin Menu This screen contains the following editable fields that permit associated parameters to be changed: Access code? Low Medium High Factory reset? Set RC master? Product setup Selecting access code, makes it possible to enable 3 access levels with their own code: low, medium and high. Select Low to enable low level access and to edit its code. This level will not permit any setup. Select Medium to enable medium level access and to edit its code. This level will not permit advanced setup. Select High to enable high level access and to edit its code. This level will give full access. Possibility to reset all values to factory settings. If setup and control functions were made via GRC, possibility to switch control to a RC interface. Pressing this button and entering the right code, makes it possible to access the product setup. This can only be done by an accredited Service technician. A code and special training are required for access to this menu group. 50

51 6.2.5 NETWORK MENU One GRC TAC5 can be linked to several units in a TAC5 network (unless it is used in one-to-one connection). Modbus communications allow interaction between several TAC5 controls. In a Modbus network, each unit is referenced by its Modbus address (a number from 1 to 247). It is forbidden to have two units with the same Modbus address on one network. Default TAC5 control Modbus address is View Network Visualization screen allows the communications address on the network to be changed, as well as to see a list of selected units on the network and programmed by the installer. A list of a maximum of five connected units on the network is displayed. It is the responsibility of the installer to be certain that this list corresponds to the actual network put in place. GRC TAC5 cannot detect mismatches of this type Edit The «Edit» screen allows: - To modify an address of a TAC5 unit: Enter current address of the TAC5 unit in the «From» field Enter the new address in the «to» field Press the «Apply» button to implement the change - To identify each unit on the network by name and corresponding address (only 5 names can be displayed at the same time, but each unit (up to 247) can have his own name). Each unit is factory programmed with a Modbus address of 1. To create a network, it is therefore necessary to change this address before connecting the different units on the same network. To do so: - Ensure that all units on the network are powered off or disconnected from the network - Turn on (or connect to network) the first unit, and enter an address other than 1 - Enter the address and identification name of unit in the list. - Turn on (or connect to network) the second unit, and enter an address other than 1 or than the first address entered - Etc. - It is advised to keep the 1 address for the last unit connected. 51

52 6.2.6 TIME SCHEDULE The Time Schedule is used to program the operating mode and the setting points for the fans, the comfort temperature and the status of the bypass on a weekly basis. Seasonal management of the bypass and the cold and hot coils is provided under the Seasonal manager screen Week Planner This screen allows the user to change the time and date of the control board if necessary. It also permits the user to configure the LS or CP modes if it is planned to use one of these modes for the configuration of the time slots and if the basic setup is done in another mode. Press the corresponding button to perform the configuration as described in the Setup Context Setup The «time slots» feature allows the configuration of six time slots per day. For each time slot, the working mode and the setpoint must be configured. Configuring a time slot: Press one of the fields on the screen. Indicate the start time of the time slot. Select the working mode. Enter basic setup multiplier if LS or CP, or constant airflows (exhaust and supply) if CA mode, or constant torques (exhaust and supply) if TQ mode. Enter exhaust/supply ratio if LS or CP mode Specify whether bypass is in automatic mode, open or closed. Specify T setpoints in the event of post-heating or post cooling (if option is installed) Year Planner The season screen allows adapting the configuration according to the time of year: Specify whether to disable the bypass (press button and introduce period) Specify whether to disable the post-heating (press button and introduce period) Specify whether to disable the cooling coil (press button and introduce period). 52

53 6.3 COMMISSIONING WITH APP EOLE4 INTERFACE This interface can be used on Android, IS and PC. Download the app from the App Store/Google Play or on the Plummet s website. The App Eole4 is organized into different sections each containing one or more screens HOME This is the screen that appears when the app is started. The desired language can be set here. Now press the automatic detection button, a list of the connected units on the network will appear (make sure that your device is connected to this same network). After selecting the appropriate unit, access the other sections with one of the four icons at the bottom of the screen. If the correct PIN code has been entered in the related edit box (top-right of the screen), the allowed levels will be enabled. The access levels are: Password request SETUP User No PIN code needed Not available Advanced User PIN code request (optional) Base configuration + Time Schedule Installer PIN code request (optional) Advanced configuration + Pin code configuration Factory Always PIN code request Product Setup Navigation principle: The main menu can always be accessed by returning from the section currently displayed. Press the section you want to enter on the Main Menu. Each section contains one or several tabs. Further screens are accessed by either swiping on the current screen or by pushing the selection dots on the bottom of the screen. Operating principle: - White fields are (editable) while shaded fields are non-editable. Press on a white field to change the value. A numeric keypad will be automatically displayed to enter an appropriate value. Press «Enter» to confirm. If the entered value is not valid (out of range), it is ignored and the previous value is saved. Press on drop-down menus to see the different options. Press the option to select. 53

54 6.3.2 STATUS BAR The status bar is visible in all sections and is made up of two rows of text and a status indicator. The first row includes, from left to right: - an icon corresponding to the access level, - the code ID of the unit as configured in the control board, - identification of the current control mode indication: FATAL ERROR: Fans are stopped; FIRE ALARM; RC: remote control RC TAC5; EXTERNAL OPERATION: K1-K2-K3 contacts; AUTO: TIMESCHEDULER; BYPASS; BOOST; App The second row includes, from left to right: - Default alarm LED: red when default alarm is active (see Troubleshooting section) - Pressure alarm LED: red when pressure alarm is active (see Troubleshooting section) - AF LED: antifreeze status indicator. Red when antifreeze is active (see Troubleshooting section) - Bypass LED: bypass status indicator (white: bypass inactive, orange: partially active, green: totally active) - Com LED: communications status indicator (green: communications ok, red: communications fault, see communications context) - Day of the week and hour from the control board. - The operating time of the unit. - The filters hours counter COMMAND BAR Figure 1 - Control bar in CA/TQ mode Figure 2 - Control bar in LS/CP mode MANU/ AUTO K1 K2 K3 BOOST BYPASS HEAT/ COOL T + 0,5 C T - 0,5 C MANU/ AUTO K1 K3 BOOST BYPASS HEAT/ COOL T + 0,5 C T - 0,5 C The command bar is also visible in all sections and is used to control the unit at the selected address and contains a row of the following buttons, from left to right: Manual/Auto position: Choose between the automatic position with control according to time slots and the manual position with control via the fan buttons of this screen. The selection is made by pressing the icon. Fan speed selection button corresponding to electrical input K1-K2-K3. Only K1 and K3 buttons are available for LS and CP mode (see Setup context) where K1 is normal operation and K3 is a low operation rate ( Sleep factor ). Boost: if pressed, the boost is enabled (see advanced setup boost). This icon has the same effect as electrical contact IN9. Bypass: if pressed, the bypass is totally enabled (see advanced setup bypass). This icon has the same effect as electrical contact IN4. Heating/Cooling (if post-heating and/or post-cooling are installed): Choose between the heating mode/cooling mode/ Automatic changeover between heating and cooling (only if both post-heating and post-cooling are present)/ OFF mode (heating and cooling are stopped). Comfort Temperature Setpoint increase: the comfort T setpoint is increased by 0.5 C after each time the icon is pressed. Comfort Temperature Setpoint decrease: the comfort T setpoint is decreased by 0.5 C after each time the icon is pressed. 54

55 6.3.4 VISUALISATION The screen displays a basic diagram of the unit containing useful information about the air handling unit. The screen automatically adapts depending on the status of the unit and the installed options. It indicates: The inlet and outlet temperatures of each flow; The supply and extract flows; The different components installed in the unit and their current status (options: KWin, KWout, hot water battery NV); The different external components and their current status (options: SAT TAC5 BA/KW); SETPOINTS In this section, the control mode and the values of the setpoints for the supply and exhaust fan(s) are displayed per the relative selected command (K1-k2-K3 contacts or icons). The comfort temperature setpoint is also visible here provided that optional post-heating batteries are configured CONFIGURATION This section is not available on User level. It is used to configure the units and is divided into 3 sections selectable by the tab at the top of page: Base, Advanced and Factory (only for factory settings) Base This tab allows the setting of the fan s operating mode, the pressure alarm and the comfort temperatures (if post-heating or post-cooling or free cooling option are installed) on different screens which vary depending on the selected operating mode Main Screen Select the desired working mode in the selection box Constant Airflow Mode (CA) Setting is done via editable fields for these parameters: Ratio Exhaust / Supply Airflow I Airflow II Airflow III Enter the ratio (%) between exhaust (fans F3, F4) and supply (fans F1, F2) airflows Enter supply airflow 1. Enabled if contact between terminals K1 and + 12V is closed on TAC5 circuit, or if K1 button is selected on the control bar. Enter supply airflow 2. Enabled if contact between terminals K2 and + 12V is closed on TAC5 circuit, or if K2 button is selected on the control bar. Enter supply airflow 3. Enabled if contact between terminals K3 and + 12V is closed on TAC5 circuit, or if K3 button is selected on the control bar. The exhaust airflow is calculated automatically based on the Ratio Exhaust /Supply. 55

56 Constant torque Mode (TQ) Setting is done via editable fields for these parameters: Ratio Exhaust / Supply Torque I Torque II Torque III Enter the ratio (%) between exhaust (fans F3, F4) and supply (fans F1, F2) airflows. Enter percentage 1 of maximum fan torque for supply. Enabled if contact between terminals K1 and + 12V is closed on TAC5 circuit, or if K1 button is selected on the control bar. Enter percentage 2 of maximum fan torque for supply. Enabled if contact between terminals K2 and + 12V is closed on TAC5 circuit, or if K2 button is selected on the control bar. Enter percentage 3 of maximum fan torque for supply. Enabled if contact between terminals K3 and + 12V is closed on TAC5 circuit, or if K3 button is selected on the control bar. The percentage of maximum fan torque for exhaust is calculated automatically based on the ratio Exhaust /Supply Demand control 0-10V Mode (LS) Setting is done via editable fields for these parameters: V min V max Vmin Enter Vmin for LS link (minimum voltage) Enter Vmax for LS link (maximum voltage) Enter airflow rate corresponding to Vmin Vmax Enter airflow rate corresponding to Vmax (can be < or > to «flow Vmin»). Stop fans if V<Vlow? Vlow Stop fans if V>Vhigh? Vhigh 0-10V on K3 Possibility to stop the fans automatically if 0-10 V signal < Vlow. Press LED to turn this feature on (the LED turns green). Appears only if the feature is enabled. Enter the threshold value Vlow (Vlow < Vmin). Possibility to stop the fans automatically if 0-10 V signal > Vhigh. Press LED to turn this feature on (the LED turns green). Appears only if the feature is enabled. Enter the threshold value Vhigh (Vhigh > Vmax). No : Extract air volume equals supply air volume, if Ratio Exhaust/supply equals 100% Yes, Exhaust : Both air volumes are controlled independently by two different 0 10 V signals Yes, Supply : The most important of the two signals on K2 and K3 will be the master to control the supply air volume. The extract air volume equals supply air volume, if Ratio Exhaust/supply equals 100% If 0-10V on K3 = NO Ratio Exhaust / Supply % on K3 (sleep factor) Select the airflow ratio between the exhaust airflow (fans F3, F4) and supply airflow (fans F1, F2) A sleep factor, where the unit enters a low operating rate. Enter multiplier (%) of the LS link when contact between terminals + 12V and K3 on TAC5 circuit is closed, or if K3 (Sleep) button is selected on the control bar. 56

57 Constant Pressure Mode (CP) Setting is done via editable fields for these parameters: CP on Ratio Exhaust/ Supply % on K3 (sleep factor) Initialize the pressure «Supply» or «Exhaust» or «Supply and Exhaust». Select in which airflow the pressure sensor is placed. Enter the airflow ratio between the exhaust airflow (fans F3, F4) and supply airflow (fans F1, F2). Not applicable if CP on supply and exhaust. A sleep factor, where the unit enters a low operating rate. Enter multiplier (%) of the CP assignment when contact between terminals + 12V and K3 on TAC5 circuit is closed, or if K3 (Sleep) button is selected on the control bar. «Airflow» or «Pressure». Specify method to determine the reference pressure. If Init pressure VIA AIRFLOW: TAC5 control automatically computes setpoint pressure value xx,x V xxxx m³/h Start Last registered pressure setpoint (0.0 if never configured). Non-editable in this type of initialization. To edit it directly, switch to manual initialization. Enter (nominal) airflow at which the pressure setpoint must be determined. Make sure that the panels of the unit are fully closed, with filters in place. Press "Start" to start initialization of Pa ref (optional if been made previously). If MANUAL Init pressure: enter pressure setpoint directly xx,x V Enter pressure setpoint value (converted in voltage according to the pressure sensor characteristics) Alarm Pa Screen Used in CA or LS mode to initialize the computed pressure alarm. Setting is done via editable fields for these parameters Pressure alarm Reference values Supply/Exhaust Maximum pressure variation Supply/Exhaust Resulting alarm threshold Pressure alarm is optional. To activate the pressure alarm, press the enabling button. Reference pressure (Pa ref) determination. Pa ref is defined by running the supply and exhaust fans at airflows specified below (exhaust airflow is determined by the «%Ex/Su» ratio. Pa ref for supply and exhaust are consequently different. Setup Pa Alarm on supply and exhaust side. Enter pressure increment (corresponding to the additional pressure required to reach the reference pressure on each side) Make sure that the panels of the unit are fully closed, with filters in place. Press «Initialization» to start initialization of Pa ref (optional if been made previously) T Setpoint Screen This screen is visible only if there is post-heating or post-cooling or free cooling (with modulating bypass) installed. Setting is done via editable fields for these parameters Heating Cooling Free cooling Enter comfort setpoint T for heating Enter comfort setpoint T for cooling Enter comfort setpoint T for free cooling When automatic changeover is selected in the command bar and when there are post-heating and post-cooling: Comfort Comfort setpoint T Neutral band high Neutral band low Select the higher neutral band respect to the desired comfort setpoint. A change over from heat to cool will automatically occur when the measured temperature on the extract air will exceed this band. Select the lower neutral band respect to the desired comfort setpoint. A change over from cool to heat will automatically occur when the measured temperature on the extract air will fall under this band. 57

58 Filters Hours Menu This screen can be used to set the desired number of hours to be alerted for the filters cleaning or replacing. This hours should be set taking into account the recommendation of the preventive maintenance section. Once the filters cleaned or replaced, the hours counter must be reset with the button. Maximum Filters Hours Reset hours Set the hours after which to change or clean the filters. Refer to the preventive maintenance section. If the value configured will be higher than 0, then an alarm message requiring to change or clean the filter will appear when the counter of the filters hours will exceed this parameter. Button for resetting the counter for the filters hours. To do when then filters have been cleaned or changed Advanced This tab in the configuration section is used to enable specific features or to modify standard settings Main Screen Select the desired working mode in the selection box. Airflow units Start torque Softstop allowed Choice of airflow unit: m³/h (default) or l/s Possibility to modify the fan s starting torque (2% default). Disable the possibility to stop the fans using the RC (remote control) via K1/K2/K3 on TAC5 circuit. This feature corresponds to disabling the softstop function: - If GRC master: the OFF key is disabled. - If TAC5 master: SAME COMMENT AS BEFORE -CA mode: if no entries connected to K1/K2/K3 then K1 airflow is activated. - LS or CP Mode: if K1 entry is not connected to +12 V, then control operates as if K1 was connected to +12V. To do this select N (Y is default value) OUT1 (0-10V) OUT2 (0-10V) Choice of information supplied by 0-10 V OUT1 output connection: airflow/torque or pressure on one fan (default value is airflow/torque on fan F1). Choice of information supplied by 0-10 V OUT2 output connection: airflow/torque or pressure on one fan (default value is pressure on fan F1). Parameter used only in CP mode Reaction speed in CP Configuration of the reaction speed of the CP algorithm. 10 is the default value and is the highest reaction speed. Each -1 increment corresponds to a doubling of the reaction time (10 = T, 9 = 2xT, 8 = 4xT,...). The default value is determined for most ducting applications, only special applications (e.g. constant pressure in a room) require changing this parameter. Configuration of CP mode operating logic: - Negative logic: Reaction logic in CP airflow rate drops when signal on K2 > assignment value airflow rate rises when signal on K2 < assignment value - Positive Logic: airflow rate rises when signal on K2 > assignment value airflow rate drops when signal on K2 < assignment value 58

59 Main Screen This screen is dedicated to special features configuration concerning the alarms management. It contains the following editable fields that permit to change the associated parameter: Stop fans if alarm Pa Fire alarm Type of contact Possibility to stop the fans in case of pressure alarm (after cancelling the alarm, press RESET to restart the fans). Select how the fire alarm is activated: entry IN3 is N.O or N.C (normally open or normally closed) NO: alarm is activated when in3 contact closed NC: alarm is activated when in3 contact is open See Troubleshooting section Fire alarm. Fire alarm Supply Fire alarm Exhaust Enter supply airflow rate when fire alarm is activated and if contact IN7 is closed. See Troubleshooting section Fire alarm Enter exhaust airflow rate when fire alarm is activated and if contact IN8 is closed. See Troubleshooting section Fire alarm Fan runtime Screen This screen is dedicated to the settings of the fan runtime function: possibility to enable a fan operating time counter feature. The purpose is to report a maintenance alarm and/or to stop the fans after a certain time of operation. The function will be enabled if at least one of the 2 operating time features is enabled. The screen contains the following editable fields: Reset This button resets the operating time counter to 0 Show fan runtime Service alarm Xxxxh Stop fan Xxxxh Enable display of operating time Enable maintenance alarm after a certain operating time Enter operating time limit (in hours) to generate a maintenance alarm. Enable fan stop alarm after a certain operating time? Enter operating time limit (in hours) to generate a fan stop alarm. The fans will be stopped after this limit is passed. 59

60 Bypass Screen This screen is dedicated to the bypass configuration. It contains the following editable fields that permit to change the associated parameter: Possibility to modify T setpoints to control opening/closing the bypass. Open bypass if all following conditions are met: T1 - T2 Outdoor T (T1) < indoor T (S2). Outdoor T (T1) > T1. Indoor T (T2) > T2. Closing bypass if one of the conditions is met: Impose airflow if bypass open Supply Exhaust %Bypass mode Outdoor T (T1) > T indoor (S2). Outdoor T (T1) < T1-1 C. Indoor T (T2) < T2-2 C. Enter supply and exhaust airflow rates (or percentages of maximum fan torque if torque modulation instead of airflow) when bypass is open. If you select Y, then the airflows/torques are independent from the airflows/torques when bypass is closed (Closed bypass airflows/torques, are function of working mode, K1, K2, K3 status or Modbus commands). Enter supply airflow rate when bypass open. Enter exhaust airflow rate when bypass open. If modulating bypass type (not available for all-or-nothing type): Modality of modulating bypass: - FREECOOL: free cooling due to the modulation of the bypass opening according to the difference between the measured T in the supply duct (T5) and the free cooling setpoint temperature configured in base setup. -A-FREEZE: frost protection of the plate heat exchanger due to the modulation of the bypass opening to keep the T of the exhaust air at the exchanger output (T3) above AF REC setpoint (see below). - AF-FREEC: combines the functions of FREECOOL and A-FREEZE 60

61 Antifreeze Screen This screen is dedicated to the configuration of the antifreeze protection of the heat exchanger. It contains the following editable fields: If KWin electrical pre-heat coil is installed (option) Setpoint T KWin Enter Setpoint T to start frost protection cycle with KWin. Possibility to modify the PID parameters. PID KWin Preheat on T5 CAUTION: these modifications can be destructive and should only be carried out by qualified personnel. possibility to modify PID parameter (PB) possibility to modify PID parameter (Tr) possibility to modify PID parameter (Td) Choose, for the frost protection cycle, whether to compare the frost protection T setpoint with T3 (default) or T5 T sensor. If BAin hydraulic pre-heat coil present (option) Setpoint T BAin Enter Setpoint T to start frost protection cycle with BAin. If KWin and BAin options are not installed and, modulating bypass is installed with the selected bypass modality A-FREEZE or AF-FREEC Exchanger antifreeze Enter Setpoint T to start frost protection cycle with modulating bypass. protection T If KWin and BAin options are not installed and, no modulating bypass is installed or the selected bypass modality is FREE- COOL AF protection Possibility to enable (Y) or not (N) the heat exchanger s frost protection function active? by supply airflow rate reduction. T Low AF Enter low T value for frost protection function. T High AF Enter high T value for frost protection function. Stop supply if T <T Low? Possibility to stop the fans if supply air T < T LOW. 61

62 KW/BA Screen This screen is dedicated to the configuration of the post-heating and/or post-cooling batteries either internal in the unit or external. It contains the following editable fields that permit associated parameters to be changed: Post-ventilation STOP FAN IF T5<5 C PID KWout Sat BA NV / BA+ Speed Antifreeze T NV/BA+ BA- Speed Antifreeze T BA- COMFORT ON T5 Enable post-ventilation function (allow fans to run during a certain period after softstop is enabled). Caution: if KWin and/or KWout, and/or SAT BA/KW is installed, the post-ventilation function is automatically enabled. It is then impossible to set it to NO. If enabled, enter post-ventilation time (in seconds). Possibility to stop the fan if the supply air temperature falls below 5 C (only if temperature sensor T5 is wired) With KWout/KWext option: Possibility to modify the PID parameters. CAUTION: these modifications can be destructive and should only be carried out by qualified personnel. possibility to modify PID parameter (PB) possibility to modify PID parameter (Tr) possibility to modify PID parameter (Td) Select coil type(s) regulated by the SAT BA/KW: BA+, BA-, BA+/-, BA+/BA-, KW, BA-/KW, BAin, BAin/BA+, BAin/BA+-, KW 0-10V, KW 10/BA- If NV or BA+ is installed: Possibility to change the reaction speed configuration of the post heating algorithm (3-way valve control). Default value 5 Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application. If NV or BA+ is installed: Temperature threshold for NV/BA+ frost protection: if the temperature of NV/BA+ drops below this threshold, then the frost protection for NV/BA+ will be activated. If BA- installed: Possibility to change the reaction speed configuration of the post cooling algorithm (3-way valve control). Default value 5 Each increment of -1 corresponds to a doubling of the reaction time ( 5 =T, 4 =2xT, 3 =4xT, 2 =8xT, ). Each increment of +1 corresponds to a halving of the reaction time ( 5 =T, 6 =T/2, 7 =T/4, 8 =T/8, ). We recommend changing this value only if you experience T stability problems in your application. If BA- is installed: Temperature threshold for BA- or BAin frost protection: if the temperature of BA-/BA in drops below this threshold, then the frost protection for BA-/BAin will be enabled. In the post-heating or post-cooling coil(s) are installed, possibility to change if r T is measured on supply (T5) or exhaust / room (T2). The temperature measured on the selected sensor is used to determine the deviation from the setpoint for regulating the heating or cooling power. If comfort on T2 Speed Min/Max Supply T Configuration of the reaction speed of post-heating/cooling. 8 default. Each -1 increment slows down and corresponds to a doubling of the reaction time (8 = T, 7 = 2xT, 6 = 4xT,...). Each +1 increment speeds up and corresponds to a diving of the reaction time (8 = T, 9 = T/2, 10 = T/4). Lower limit of supply air (T5). Upper limit of supply air (T5). 62

63 Antifreeze Screen This screen contains the following editable fields that permit associated parameter to be changed: Unit name Advanced user access protected Installer access protected Factory PIN High Reset to factory settings Name of the AHU to be easily identified during detection or in a network. Available only for advanced user access level. If enabled, possibility to enter a PIN code for the access level as advanced user. Available only for installer access level. If enabled, possibility to enter a PIN code for the access level as installer. Available only for factory. Select High to enable high level access and to edit its code. This level will give full access. Possibility to operate a general factory reset. All factory settings are then regenerated TIMETABLE The Timetable section is used to program the operating mode and the setting points for the fans, the comfort temperature and the status of the bypass on a weekly basis. Seasonal management of the bypass and the cold and hot coils is provided under the Year Planner tab Setup The first tab of this section allows the user to change the time and date of the control board if necessary. A button automatically synchronises the time and date with the device which is running the App. This tab also allows the user to configure the LS or CP mode, if these will be used in the timetable and the basic setup has been done with a CA or TQ Mode. Swipe to the second or third screen to perform the configuration of LS and CP respectively as described in the Setup section Week Planner The time slots feature allows configuration of six time slots. per day. For each time slot, the working mode and the setpoint must be configured. To configuring a schedule: Select the desired day of the week from Monday to Sunday. Select the desired time slot from 1 to 6. Indicate the start time of the time slot. Select the working mode. Enter basic setup multiplier if LS or CP, or constant airflows (exhaust and supply) if CA mode, or constant torques (exhaust and supply) if TQ mode. Enter exhaust/supply ratio if LS or CP mode Specify if bypass is in automatic mode, open or closed. Specify T setpoints in case of post-heating or post cooling (if option present). Once the time slots for one of the week days have been configured, the button Copy will permit, if so desired, to copy the time slot configuration for that day to the following days. 63

64 Year Planner The screen of the Year Planner section allows the configuration to be adapted according to the time of year: Specify whether to disable the bypass (press button and introduce period) Specify whether to disable the post-heating (press button and introduce period) Specify whether to disable the cooling coil (press button and introduce period) DIAGNOSTICS This section is useful for troubleshooting thanks to the following screens: Alarms This screen shows the airflow and the computed pressure for each fan (the pressure is always available for forward fans type, but only with option kit CA for backward fans type) Flows This screen gives the description of the active alarms with a button to reset. In CP mode and when Modbus sensors are used, the related pressure is displayed in this screen also T In this screen, the values of the temperature sensors are displayed I/O The values and status of the Input/output can be monitored here COMMUNICATIONS This section provides the ability to configure the IP address manually and the communications port for connection to the desired unit. A button for automatic detection is also available. Note that if the unit is accessed remotely through a VPN, automatic detection cannot work and initial access must be done in this screen providing the correct IP address and communications port. Finally, a check box for automatic connection to the last connected unit allows access directly to the unit the next the App is started up. The discovery phase will be skipped and the visualisation context will be immediately entered with the User access level NETWORK The App Eole4 can control a network of units and, in this instance, the screen automatically shows an overview of the status of all the connected AHU with a row for each one containing: The IP address of the unit and its name, provided it has been configured. The working mode of the unit (CA, TQ, LS, CP). The flows values: supply and extract airflows with pressures (these ones are always available for forward fans type, but only with option kit CA for backward fans type). The alarm status of the unit. To interface directly with one of these units, just select its row and then press the connect button VERSION INFO This screen gives the software version number of the App, of the SAT WIFI or Ethernet and of the control board TAC5. 64

65 7.0 Preventive maintenance Attention : before handling and/or opening the access panels it is compulsory to shut down the unit and disconnect the power supply using the general switch located on the front panel. Do not isolate the power supply whilst the unit is running. If KWin and\or KWout are installed, then isolate the corresponding power supplies. Regular maintenance is essential to guarantee good operation of the air handling unit and a long service life. The maintenance frequency will depend on the application and on the actual environment conditions but the following are general guidelines: 7.1 ONCE THE UNIT OPERATES IN NORMAL CONDITION Replace the filters with a kit of replacement filters. 7.2 EVERY 3 MONTHS - Check for any alarms indicated on the control device. In case of an alarm refer to troubleshooting section. - Check the state of filter clogging. The control device allows a pre-defined filter alarm threshold to be set. Replace filters if necessary. Filters that are too clogged can generate the following problems: - Insufficient ventilation - Excessive increase of fan rotation speed - Excessive sound levels - Excessive power consumption (power consumption will increase exponentially to an increase in pressure drop, for a constant airflow) - Unfiltered air passing through the heat exchanger (risk of clogging) and into ventilated rooms. The list of replacement filter kits for each unit can be downloaded from our website: - Inspection and cleaning of the inside of the unit: Vacuum clean any accumulations of dust in the unit. Inspect and gently vacuum clean the heat exchanger if necessary. Use a brush to protect the fins. Clean any condensation stains For PX units, clean any accumulations in the drainage pan. 65

66 7.3 EVERY 12 MONTHS 1. For rotary heat exchanger (RX) units, check the brush seals on the rotary heat exchanger along the perimeter in contact with the frame: If necessary, bring the brush seals closer to the exchanger to ensure good sealing. 2. For RX units, check the tension of the driving belt on the rotating heat exchanger. If there is no tension or if the belt is damaged, please, contact Swegon s service department for a belt replacement. Ideally the heat exchanger should be cleaned using vacuum cleaner with a soft nozzle to prevent damaging the air passages in the rotor. Turn the rotor by hand to enable you to vacuum clean its entire surface. If the heat exchanger is substantially fouled, it can be blown clean with compressed air. 3. For plate heat exchanger (PX) units: Clean the drainage pan Clean the inside of the bypass. To access the interior of the bypass it is necessary to force it open, proceed as follows: place a jumper between terminals IN4 and +12V on the TAC5 circuit board. The bypass is now open, irrespective of the temperature conditions. Remember to remove the jumper between terminals IN4 and +12V once cleaning of bypass is done. Always clean against the regular direction of airflow. Cleaning must only be done by blowing with compressed air, vacuum cleaning with a soft nozzle or through wet cleaning with water and/or solvent. Before you begin cleaning, cover adjacent functional sections to protect them. If cleaning solvent is used, do not use solvent that will corrode aluminium or copper. 4. Fan maintenance: Check again whether the power supply is shut down and fans are not running. Inspect and clean the fan impellers to remove any dirt deposits, be careful not to alter the impeller balance (do not remove balancing clips). Check the impeller to make sure that it is not out of balance. Clean or brush off the fan motor. It can also be cleaned by carefully wiping it with a damp cloth that has been dipped in a solution of water and detergent. Clean the fan space, if needed. Remove the fans if necessary. 5. Check seals on the unit: Ensure that the side access panels are fully closed and that the seals are intact. Replace if necessary. 66