VEX140 Horizontal. with Electric heating coil HCE VEX100. Original instructions. Product information... Section 1 + 8

Transcription

1 Product Instruction VEX140 Horizontal with Electric heating coil HCE VEX100 R A N G E CROSS FLOW HEAT EXCHANGER Unit supplied with (factory fitted): Airflow control Icing detector Electric heating coil HCE 140-7,2 kw Electric heating coil HCE ,4 kw VDI 6022 The following accessories are supplied separately: Closing damper, LS315-24, (LSA exhaust) Closing damper, LS315-24, (LSF outdoor) Closing damper, LSR315-24, with spring-return (LSFR outdoor) Closing damper, LSR315-24, with spring-return (LSAR exhaust) pieces, Fire thermostat, BT40 pieces, Fire thermostat, BT50 pieces, Fire thermostat, BT70 pieces, TOUCH-panel, EON-TOUCH-6 pieces, TOUCH-panel, EON-TOUCH-8 pieces, Constant pressure regulation, EON-PRESSURE Mounting base, MS-VEX140H Humidity sensor, EON-RH CO 2 -sensor, EON-CO2 Temperature sensor, EON-TS-DUCT Temperature sensor, EON-TS-ROOM x DISPLAY-panel (is by delivery placed in the connection box) Product information... Section Mechanical assembly... Section Serial no.: Prod.order no.: Sales order no.: Electrical installation... Section 4 Commissioning and operation... Section Maintenance... Section 6 Original instructions EXHAUSTO A/S Odensevej 76 DK-5550 Langeskov Tel Fax exhausto@exhausto.dk

2 1. Product information 1.1 Usage Requirements for surroundings Spatial requirements Requirements for underlying surface Requirements for the duct work system Description The function of the air handling unit The design of the air handling unit Principal dimensions Handling 2.1 Unpacking Transport Passage through openings Mechanical assembly 3.1 Installation Installation directly on the floor Installation on mounting base Condensation outlet Hygieine (applies only to VEX100VDI) Measurement of pressure loss across filters (applies only to VEX100VDI) Electrical installation 4.1 The scope of the installation Connection of the electrical supply Fuses and supply cable Connection box Components in connection box Connection diagram for supply voltage and connection box Cable plan Terminal board for the connection box Connection of shielded cable to EON-BUS Connection to terminals, EON external Connection of DISPLAY panel Connection of TOUCH panel Setting the address and function of the TOUCH panel On-demand control via constant pressure regulation On-demand control via CO2 measurement On-demand control via humidity measurement Commissioning and operation 5.1 Commissioning Initial adjustment of airflow Measuring points for determining the airflow Balance (menu 514) Selection of airflow regulation method Comfort setting in (menu 1) Re-connection of EON modules Compensation of airflow External compensation of airflow (menu 54) CO2 compensation, (menu 55) /72

3 5.2.9 Humidity compensation of airflow (menu 56) Initial adjustment of temperature Temperature adjustment Limits for supply air temperature Limits for indoor climate level Supply air temperature regulation Room temperature regulation Safety functions HCE safety functions Registration of icing in the cross-flow heat exchanger De-icing function Operating mode in the event of fire BT, Fire thermostats Service List of EON modules connected Language selection The DISPLAY panel DISPLAY panel QUICK GUIDE for the VEX100 range Using the DISPLAY panel Operating modes Switch between user modes (user/technician/specialist) Setting the weekly clock menu The TOUCH panel TOUCH panel QUICK GUIDE for the VEX100 range The diodes Using the TOUCH panel to adjust the indoor climate Setting the filter controls Maintenance 6.1 Measuring points for pressure, temperature and air-flow Maintenance chart Cleaning the fans Cleaning the heating coil Cleaning the cross-flow heat exchanger Troubleshooting 7.1 Resetting alarms Trouble-shooting via the EON BUS Alarm list: Causes of errors and remedial measures Technical specifications 8.1 Weight, Corrosion class, Motor dampers, etc Electric heating coil Capacity diagrams Parts list for ordering spares /72

4 Prohibition symbol Failure to observe instructions marked with a prohibition symbol may result in serious injury or death. Danger symbol Failure to observe instructions marked with a danger symbol may result in personal injury and/or damage to the unit. These instructions area of use These instructions apply to EXHAUSTO air handling units. Please refer to the separate product instructions for accessories and extra equipment. These instructions must be fully observed to ensure personal safety, to protect the equipment and to ensure correct operation of the air handling unit. EXHAUSTO A/S accepts no liability for personal injury or material damage caused by failure to follow the guidelines and instructions in this manual when installing and/or using the product. Accessories NB The checklist on the front of these instructions shows which accessories have been delivered with the air handling unit. When retro-fitting accessories from EXHAUSTO, please update the list on the front cover. Definition Drawings In the type designations, R stands for Right, which means that the supply air is to the right of the unit, as seen from the operating side. L (Left) indicates supply air on the lefthand side. An indication in the bottom right-hand corner of the drawings in this manual states whether the unit shown is a Right or Left unit. Warnings: Do not open the service doors before the electrical supply has been disconnected at the repair switch. Not suitable for The air handling unit is not to be used to transport solid particles, nor in areas where there is a risk of explosive gases. No duct connection If one or more of the spigots is not connected to a duct: Fit the protective net to the spigots with a maximum mesh width of 20 mm. Lock down the VEX during operation The VEX must always be locked down during operation: either using the locking cylinder in the handle. Remember to remove the key from the lock. or using a padlock via the built-in padlock fittings in the handle. 4/72

5 Designations in this manual Component designation Function Component designation Function HCE Electric heating coil TE11 Temperature sensor, extraction TSA70 Overtemperature electric heating TE21 Temperature sensor, outdoor air coil (automatic reset) TSA90 Overtemperature electric heating TE12 Temperature sensor, exhaust coil (manual reset) GV1 Bypass damper TE22 Temperature sensor, supply PDS1 Filter control, extraction EON DISPLAY DISPLAY panel PDS2 Filter control, outdoor air EON TOUCH TOUCH panel PDT1 Pressure measurement, crossflow heat exchanger (icing) EON TS ROOM/ EON TS DUCT Temperature sensor, room/ extraction duct AFC1 Airflow control, extraction EON CO2 ROOM/ CO 2 sensor, room/extraction duct EON CO2 DUCT AFC2 Airflow control, supply air EON PRESSURE Pressure sensor for constant pressure regulation M1 Extraction fan motor EON RH ROOM Humidity sensor, room M2 Supply motor LSF/LSFR Closing damper, outdoor air TSA1 Overheating extraction fan motor LSA/LSAR Closing damper, exhaust TSA2 Overheating supply motor BT40/BT50 Fire thermostat, 40 C/50 C (extraction) BT70 Fire thermostat 70 C (supply) 5/72

6 Product information 1. Product information 1.1 Usage Comfort ventilation EXHAUSTO air handling units are used for ventilation tasks in the area of Comfort ventilation. The operating temperature range for the unit is -30 C 35 C, outdoor air temperature. Not suitable for The air handling unit is not to be used to transport solid particles, nor in areas where there is a risk of explosive gases. 1.2 Requirements for surroundings Positioning As standard, the unit is designed for indoor placement Spatial requirements The section below states how much space is needed for the side-mounted doors to be opened to enable service procedures on the unit including filter replacement and cleaning the cross-flow heat exchangers NB! For service reasons there must be a free height of minimum 200 mm above the connection box of the unit. RD VEX 140HL Requirements for underlying surface When fitting the unit directly to an existing surface i.e. without using the mounting base (accessory) the surface must be: smooth horizontal (+/- 3 mm per metre) hard resistant to vibration Outlet Condensation outlet, see the chapter entitled Mechanical assembly. 6/72

7 Product information Requirements for the duct work system Silencers Bends Insulation Condensation The duct work system must be fitted with silencers specified by the person responsible for the project, in accordance with the requirements for the area of use. Duct bends can be fitted immediately after the unit, as the air from the spigot flows at a uniformly low speed, resulting in negligible system pressure loss. The duct work system is to be insulated out of consideration for condensation noise loss of heat/cooling If the exhaust air has very high levels of humidity, condensation can form in the exhaust air duct. EXHAUSTO recommends that a condensation outlet is installed at the exhaust air duct s lowest point. No duct connection If one or more of the spigots is not connected to a duct: Fit the protective net to the spigots with a maximum mesh width of 20 mm. 1.3 Description The function of the air handling unit The air handling unit is variably adjustable and consumes little energy. Indoor climate level The control unit allows three indoor climate levels Indoor climate level People in the room Energysaving Airreplacement *) Deviation from the required room temperature *) Ventilation blocked - No No ventilation No control of room temperature Economy Large No Low, step 1 Larger temperature deviation permitted *) Standby Small No Low, step 1 Minor temperature deviation permitted *) Comfort None Yes High, steps 1 10 Precise temperature *) The DISPLAY panel is used to set the air replacement and temperature deviation values, see the chapter entitled The DISPLAY panel and the supplement entitled List of alarms and menus for VEX The applicable indoor climate level can be controlled in four ways: via a weekly schedule, which, on the basis of the requirements entered for the operation of the unit, is entered into the automatic weekly clock via the DISPLAY panel. via a TOUCH panel in the room. The TOUCH panel is used to signal to the control system that there are people in the room, or that people have left the room. via a BMS and LONWORKS. Instructions for LONWORKS are available on request from EXHAUSTO. via ITool a modem or TCP/IP-based network that can monitor and control one or more units through a PC (or a mobile phone). See the chapter entitled Commissioning and operation. 7/72

8 Product information The design of the air handling unit Layout drawing The drawings below show the layout of the unit (shown without service doors) ,2,A 2,1,A ,2,A 1,1,A VEX140HL VEX150HL VEX160HL RD ,1,A 1,2,A ,1,A 2,2,A VEX140HR VEX150HR VEX160HR 8/72

9 Product information Pos. no. Part Function 1 Spigot 2,1,A Spigot for outdoor air. This spigot can also be positioned on the top of the unit (2,1,B). 2 Closing damper, LS Closing damper, outdoor air, LSF (accessory). 3 Filter for outdoor air Filters the outdoor air. 4 Bypass damper with motor For operation with heat recovery, the bypass damper is closed so that the air passes through the cross-flow heat exchanger. For bypass operation, the damper is open, and the airflow bypasses the exchanger. 5 Spigot 1,1,A Spigot for extraction air. This spigot can also be positioned on the bottom of the unit (1,1,B). 6 Condensation outlet Channels condensation to the drain. 7 Cross-flow heat exchanger Channels the heat from the extraction air to the supply air. 8 Filter for extraction air Filters the extraction air. 9 Condensation tray Collects the condensate and leads it from the crossflow heat exchanger to the condensation outlet. 10 Electric heating coil Heats the supply air if the recovered heat is not sufficient. 11 Spigot 2,2,A Spigot for supply air. This spigot can also be positioned on the bottom of the unit (2,2,B). 12 Fan unit For outdoor air/supply air. 13 Fan unit For extraction air/exhaust air. 14 Closing damper, LS Closing damper, exhaust, LSA (accessory). 15 Spigot 1,2,A Spigot for exhaust air. This spigot can also be positioned on the top of the unit (1,2,B). 16 DISPLAY panel Operation of the control system. 17 Connection box Box for the connection of external ventilation components and control panels. 18 Filter control extraction, PDS1 Controls pressure loss across the filter for extraction air. 19 Filter control outdoor air, PDS2 Controls pressure loss across the filter for outdoor air. 20 Spigot for airflow control, AFC Spigot for airflow measurement and regulation. 21 Pull-out panel. Positioning of automatic components. The cabinet The in-door and exterior of the cabinet are made of sheet aluminium-zinc. The spaces between the panels are insulated with 50 mm mineral wool. Fans The unit contains two centrifugal fans for extraction and supply air. Cross-flow heat exchanger with bypass The cross-flow heat exchanger in the unit is fitted with a modulating bypass damper. The cross-flow heat exchanger can be removed and cleaned. Filters The unit includes compact filter for both extraction and supply air. 9/72

10 Product information 1.4 Principal dimensions VEX140HL The principal dimensions are stated on the following drawing: ,5 1,2,B ,5 2,1,B 1,2,A 2,1,A M N 2,2,A 1,1,A ø16/ø18 287,5 2,2,B 1,1,B 247, M O 315 1,2,A 475 N ,1,A O ,5 O O ,5 12 2,2,A 259, ,2 1,1,A ,8 VEX 140HL RD NB The drawing shows all possible spigot locations. 10/72

11 Product information VEX140HR The principal dimensions are indicated on the following drawing: ,5 2,1,B ,2,B 287,5 2,1,A 1,2,A M N 1,1,A 2,2,A ø16/ø18 247,5 1,1,B 2,2,B 287, M ,1,A O 315 O 315 1,2,A N ,5 O 315 O , ,1,A 1,2 6 2,2,A , ,8 2 6 RD VEX 140HR NB The drawing shows all possible spigot locations. 11/72

12 Handling 2.Handling 2.1 Unpacking Delivery The delivered items are: Air handling unit Specified accessories (indicated in the checklist on the front page of the instructions) Packaging NB 2.2 Transport Transport equipment The unit is delivered attached to a disposable pallet and packed in clear plastic. Once the plastic has been removed, the unit must be protected against dirt and dust. The covers on the spigots must not be removed until the spigots are connected to the ventilation duct works. Whenever possible, keep the unit closed during assembly. After it has been in operation for a short period, the VEX unit must be vacuum cleaned internally to remove swarf, if any, from the duct connections.. Transport the air handling unit in one of the following ways.. By lifting truck or fork-lift By crane Lift the air handling unit on the disposable pallet. NB: If the disposable pallet cannot be used, the forks on the lifting equipment must be sufficiently long to prevent damage to the bottom of the unit. Weight RD Never use a crane to lift the air handling unit by the lifting handles. Use straps and lifting yokes to prevent damage to the air handling unit. For information about the weight of the unit, see the chapter entitled Technical specifications. RD /72

13 Handling Passage through openings Height Width The height of the unit is 1127 mm +62mm for a bottom-mounted spigot, if fitted. The list below shows the widths required to allow the VEX to pass. If the width of the aperture is *) less than 710 mm between 710 and 760 mm more than 760 mm then the unit cannot pass through. remove the doors, see the section below. the unit can pass through. *) The measurements are stated on the basis of the exact dimensions of the unit. Removing the service doors Remove the service doors as follows: Open both doors Dismount door stops (B). Use a small punch or a similar tool to knock the pins out of the tops of the door hinges (A). The doors can then be lifted off. Detail A Detail B A B 13/72

14 Handling Removing the impeller RD Step Action 1 Remove the fixing screw that is seated in the pullout rail and loosen the bindings to the motor cable. 2 Pull the fan unit out to the stop (two screws) on the pull-out rail. 3 Remove the supply cable in the motor terminal box and the hose to the inlet. 4 Remove the two screws from the pull-out rail. The fan unit can now be lifted off. Cross-flow heat exchanger See chapter 6 of the section entitled Cleaning the cross-flow heat exchanger for details of how to remove and refit the cross-flow heat exchanger. 14/72

15 Mechanical assembly 3. Mechanical assembly 3.1 Installation Background It is important that the air handling unit is installed on a horizontal surface, as this influences the collection and draining of the condensate Installation directly on the floor. The requirements for the floor surface must be fulfilled, see the section entitled Requirements for underlying surface, chapter 1. NB After installation, make sure that the air handling unit is completely level Installation on mounting base 3.2 Condensation outlet The EXHAUSTO mounting base enables correct installation of the air handling unit. The mounting base is fitted with adjustable levelling screws so that the air handling unit can be installed completely level on uneven surfaces (+/- 20 mm per metre). See the separate instructions for the installation of the mounting base. Connection Frost risk Connect the condensation outlet to a floor-mounted drain or similar. A water trap must be fitted between the condensation outlet and the drain. If there is a risk of frost: Insulate the condensation outlet and protect it against frost if necessary, using a heating cable. Positioning NB The drawing below illustrates the correct positioning of the water trap from the condensation outlet. If the unit is installed on an EXHAUSTO mounting base, there will be sufficient free height to fit a water trap. VEX VEX150 - VEX160 15/72

16 Mechanical assembly 3.3 Hygieine (applies only to VEX100VDI) VEX100VDI meets VDI 6022/ILH Berlin requirements, which means: bacterial growth and dirt accumulation are minimal conditions for cleaning are optimal 16/72

17 Mechanical assembly Measurement of pressure loss across filters (applies only to VEX100VDI) Fitting of U-pipe manometer VDI6022 approval also means that pressure loss across the filters must be measurable during operation. This means a U-pipe manometer must be fitted for every exterior filter fitted on the VEX. The section Maintenance states how often the filters should be inspected and replaced. Step Action 1 Fit the U-pipe manometer and air bleeders with the supplied screws in the punched holes. 2 Fit the hoses from each air bleeder down to the manometer. See picture. 17/72

18 Electrical installation 4. Electrical installation The work must be performed by an authorised electrical fitter, in accordance with locally applicable regulations and legislation. Repair switch EXHAUSTO A/S stresses that according to the Machine Directive *), a repair switch must be fitted in the fixed installation of the unit. The switch must be lockable or positioned in plain sight in the immediate vicinity of the unit. be able to disconnect all poles from the electrical supply. contact distance of at least 3 mm in each pole. set up as a power supply isolator in accordance with standard EN The repair switch is not supplied by EXHAUSTO. *) Please refer to the Machine Directive Appendix 1 - Separation of the sources of energy. Warning Do not open the service doors before the electrical supply has been disconnected at the repair switch. 4.1 The scope of the installation Air handling unit The electrical installation work for the air handling unit consists of the following tasks: Connection to air handling unit: Electrical supply Connection box Connection box The following can be connected to the terminal board in the connection box: DISPLAY panel, via EON **) BUS TOUCH panel ***), via EON **) BUS EON components ***), via EON **) BUS Cooling unit control ***) Closing damper, exhaust, LSA/LSAR ***) Closing damper, outdoor air, LSF/LSFR ***) Fire thermostat BT 40/50/70 ***) Alarm relay **) EON = EXHAUSTO Operating Network. ***) Accessories, see the checklist on the front page of these instructions. 18/72

19 Electrical installation 4.2 Connection of the electrical supply The installation of the supply cable must be carried out in accordance with applicable regulations and legislation. The earth terminal (PE) must always be connected. Diagram The electrical supply and the repair switch must be connected as shown in the diagram in the section : Connection diagram for electrical supply and connection box Fuses and supply cable Fuses The fuses must be suitable for: Short-circuit protection of the unit Short-circuit protection of supply cable Overload protection of supply cable Power supply cable When dimensioning the supply cable, the conditions at the installation location including temperature and the path of the cable must be taken into consideration. The unit must be protected against indirect contact. If earth leak circuit breakers are fitted in the installation, they must be of a type that breaks the circuit when they register vagrant power supply with DC content (pulsating DC, RCCB breaker type A, in relation to standard EN61008). The earth leak relays must be marked with the following symbol: Leak current of up to 300 ma can be generated. Dimensioning FC-motor EXHAUSTO recommends the following dimensions for fuses and supply cables: Electric heating coil size Recommended fuse Recommended min. cable dimension Power consumption max. HCE 7,2 25 A gl 5G4,0mm 2 21,6 A HCE 14,4 35 A gl 5G6,0mm 2 32,0 A 19/72

20 Electrical installation 4.3 Connection box Components in connection box Overview Filter control for outdoor air (PDS2) Filter control for extraction (PDS1) Cable incl. plug for extra DISPLAY panel during service procedures Measurement socket for airflow measurement and regulation: Supply Extraction LON-terminals EON-terminals Other terminals Alarm 20/72

21 Electrical installation Connection diagram for supply voltage and connection box Diagram The diagram below illustrates the connection of the supply voltage, the DISPLAY panel and various accessories that must be connected to the connection box. * Not supplied by EXHAUSTO. ** Only for external fitting. 21/72

22 Electrical installation Explanation of diagram NB Type Explanation Supplied by -F1 Pre-fuse in section and distribution board customer -Q1 Main isolator in section and distribution board customer -Q2 Repair switch that disconnects all poles customer -E1 Fuse board customer -F2 Fuses for VEX automatic components and motors customer -F3 Fuses for electric heating coil, steps 1 and 2 customer -A1 Air handling unit EXHAUSTO -A2 Connection box EXHAUSTO -W1 Power supply cable. See cable dimensions in customer section 4.2 -W2 Power supply cable. See cable dimensions in customer section 4.2 -X1 Socket for DISPLAY panel in connection box. Not to be removed. Used in service procedures. EXHAUSTO Other parts are delivered by EXHAUSTO as indicated on the front page of these instructions Cable plan The cable plan below shows the accessories that can be connected in the connection box. 22/72

23 Electrical installation Terminal board for the connection box The following chart shows the components (standard + accessories) that can be connected to the terminal board. Component Terminal board no. Connection of the following components LON 1-4 LONWORKS bus system (Supplementary instructions available. Set-up requires the assistance of a network provider). Internal EON 5-8 Internal EON components. External EON 9-12 External EON components, for example: TOUCH panel (EON-TOUCH 6/8) DISPLAY panel (EON-DISPLAY-8) EON-PRESSURE EON-CO2 EON-TS DUCT EON-TS ROOM LSF/LSFR Closing damper, outdoor air, LSF Closing damper, outdoor air with spring return, LSFR LSA/LSAR Closing damper, exhaust, LSA Closing damper, exhaust air with spring return, LSAR BT *) These inputs may be used to connect: Smoke detectors Fire thermostats (e.g. BT40, BT50 or BT70) BMS Fire control systems RGS : Interrupt (when the VEX starts) Close (when the VEX stops) 18-20: Close (when the VEX starts) Interrupt (when the VEX stops) 24V V output for external components Alarm General alarm BT *) Jumpers on connection board Where fire thermostats (BT) are not being used Action place jumpers between terminals 16 and 17 23/72

24 Electrical installation Connection of shielded cable to EON-BUS Cable type Connection A shielded cable of type 2 x 2 x 0,5 is to be used for the EON bus. The conductors and shield must be connected correctly as illustrated in the chart below. Step Action 1 The 0V and 24V conductors must be twisted together. SCL and SDA must be twisted together. Drawing symbol: twisted-pair conductors 2 The conductors in the EON bus must be stripped to the correct length and must not be damaged, as this may cause them to break. 3 All screws in the EON connector must be tightened. 4 The shield in the EON bus must be terminated correctly in the connection box. The shield wire must be connected to the 0V conductor. 5 The shield in the EON bus is continued in the individual modules. Use the cable tie to squeeze the foil from each cable together. B 24/72

25 Electrical installation 4.4 Connection to terminals, EON external The external EON terminals are used to connect the following components: TOUCH panel (EON-TOUCH 6/8) DISPLAY panel (EON-DISPLAY-8) EON-PRESSURE EON-CO2 EON-RH Connection of DISPLAY panel The fitting plate must be installed on a flat, even surface. To remove the DISPLAY panel from the fitting plate, carefully insert a screwdriver into the slots on each side of the panel and prise it loose. The panel can then be removed. NB The DISPLAY panel is connected to the unit on delivery from the factory. For external connection, see the section entitled Connection diagram for electrical supply and external connection box Connection of TOUCH panel To separate the TOUCH panel, first remove the frame. There are two screws at the back of the frame which hold the insert in place. Once you have loosened the screws, carefully remove the insert. Diagram Connect the TOUCH panel as shown in the diagram below: A: From previous EON module or external connection box B: To next EON module 25/72

26 Electrical installation Setting the address and function of the TOUCH panel Setting options Set the address and function to the values stated in the installation specifications or in the chart on the following page. Each panel must be allocated a unique address number (from 0 to 7). Set Set FUNCTION set to Function 1 Timer function. Overrides to Comfort level in pre-set time. 2 Timer function, master. Overrides to Comfort level in pre-set interval. Resets all other panels to zero. 3 Manual function, master. Manual change of level of operation, either for starting or stopping the unit (outside the clock program) or for temporarily changing the level of operation until the clock takes over (switches) again. Resets all other panels to zero. 4 Holiday function. Stops the unit until the next time that the panel is activated. 5 Manual function. Manual change of level of operation, either for starting or stopping the unit (outside the clock program) or for temporarily changing the level of operation until the clock takes over (switches) again. 6 No function. 7 No function. 0 No function. NB After the required settings have been entered, disconnect the power supply at the main switch and then restart the unit. 26/72

27 Electrical installation Complete form The form below must be completed when setting the address and function of the TOUCH panels.: Control panel no. Position in the room Address set to Function On-demand control via constant pressure regulation Setting address 0 or 1 Setting and connection of the address of the analogue EON-PRESSURE module: EON-PRESSURE: Address 0 Pressure measurement, extraction duct V = Pa Address 1 Pressure measurement, supply air duct V = Pa NB After the required settings have been entered, disconnect the power supply at the main switch and then restart the unit. In addition, fill out the label on top of the module. Connection EON-PRESSURE A: From previous EON module B: To next EON module 27/72

28 Electrical installation On-demand control via CO 2 measurement Setting address 2 Setting and connection of the address of the analogue EON-CO2 module: EON-CO2: Address 2 CO 2 measurement V = ppm NB After the required settings have been entered, disconnect the power supply at the main switch and then restart the unit. In addition, fill out the label on top of the module. Connection EON-CO2 A: From previous EON module B: To next EON module 28/72

29 Electrical installation On-demand control via humidity measurement Setting address 3 Setting and connection of the address of the analogue EON-RH module: EON-RH Address 3 Humidity measurement V = % RH NB After the required settings have been entered, disconnect the power supply at the main switch and then restart the unit. In addition, fill out the label on top of the module. Connection EON-RH A: From previous EON module B: To next EON module NB Addresses 4 to 7 Addresses 4 to 7 are not in use. 29/72

30 Commissioning and operation 5. Commissioning and operation To prevent overheating, the supply airflow must not be less than 220 m 3 /h (60 l/s) for operation involving the electric heating coil. During the commissioning phase, it may be necessary to work with the control system boxes open. Some components in these boxes must only be touched with tools that are electrically insulated. Before any and all work on motor controls or the motor s cables and terminal boxes, the power supply must be disconnected for at least 5 minutes to allow the capacitors to discharge. Do not touch the heating coil, as this can cause burns. NB The fans run on for three minutes. This ensures that the heat from the electric heating coil is fully exploited. 5.1 Commissioning Before starting the initial adjustment Keep the supplement entitled List of alarms and menus for VEX 100 nearby, as you will need it during the initial adjustment procedure. Check that the electrical supply is connected. Set the DISPLAY panel to technician mode, see the sections entitled Operation of the DISPLAY panel and Switch between user modes. Use menu 921 to check that the expected control panels and EON modules have been fitted. During the initial adjustment of the airflow, we recommend disconnection of the following modules: EON-CO2, EON-RH and EON-PIR. Check that the fire thermostats (if fitted) have been fitted correctly according to the simplified diagram in the introduction. Activate the thermostat mechanically, and check that the unit stops. Reset the thermostat manually, then reset alarm 82 in the DISPLAY panel. Repeat this test for all the thermostats fitted. Check that the closing dampers (if supplied) have been fitted correctly according to the simplified diagram in the introduction. Start the unit by selecting step 1 in menu 1, and check that the damper opens. 5.2 Initial adjustment of airflow Measuring points for determining the airflow The measuring points in the unit are used to determine the airflow through the unit. The method is described in detail in the section entitled Measuring points for VENT arrangement. 30/72

31 Commissioning and operation Balance (menu 514) Balance is the desired relationship between the fan speed and the supply air and extraction airflows. The balance can only be maintained within certain areas of operation, limited by factors including: Duct characteristics Minimum fan revolution Minimum airflow required Maximum airflow required Examples of balance The examples show a unit with manual fan control and a balance of 0.80 and 1.20, respectively. Area The required airflow is A outside the operational scope of the unit B balanced C not balanced 31/72

32 Commissioning and operation Selection of airflow regulation method Airflow regulation methods Method Setting Method Description no. Extraction Supply air Manual control 1 Manual control of fan speed % Balance Airflow control 2 Maintains the airflow, compensating for changes in the duct work system, filter clogging, etc. m 3 /h l/s Balance Constant pressure regulation of extraction Constant pressure regulation of supply air Requirements: Airflow measurement sensors, AFC1/AFC2, available as accessories. 3 Constant pressure-regulated extraction with set supply air. Requirements: Sensor for measuring underpressure in the extraction duct, EON-PRESSURE, available as an accessory. 5 Constant pressure-regulated extraction slavecontrolled supply air. Requirements: Sensor for measuring underpressure in the extraction duct, EON-PRESSURE, available as an accessory. 4 Constant pressure-regulated supply air with set extraction. Requirements: Sensor for measuring overpressure in the supply air duct, EON-PRESSURE, available as an accessory. 6 Constant pressure-regulated supply air with slave-controlled extraction. Pa % Pa Balance % Pa Balance Pa Requirements: Sensor for measuring overpressure in the supply air duct, EON-PRESSURE, available as an accessory. Constant pressure regulation of both extraction and supply air 7 Constant pressure regulation of both extraction and supply air. Requirements: Sensor for measuring underpressure in the extraction duct, EON-PRESSURE, available as an accessory. Pa Balance Sensor for measuring overpressure in the supply air duct, EON-PRESSURE, available as an accessory. 32/72

33 Commissioning and operation Specialist mode Set the DISPLAY panel to specialist mode, (see the section entitled Switch between user modes ). Go to menu 571 Select airflow regulation method (1 7). Method 1 or 2 Method 1 Manual control. Method 2 Airflow control. Setting Go to menu Action min. extraction airflow max. extraction airflow 1 Select step Adjust the value to reach the minimum projected extraction airflow. 1 Select step Adjust the value to reach the maximum projected extraction airflow. balance 514 Set the balance to reach the projected supply airflow. Method 3, 5 or 7 Method 3 Constant pressure-regulated extraction with set supply air. Method 5 Constant pressure-regulated extraction with slave-controlled supply air. Method 7 Constant pressure-regulated extraction and supply air. Setting Go to menu Action extraction pressure at Economy/Standby extraction pressure at Comfort Method 3: constant supply airflow Method 5: balance at Comfort Method 7: balance at Comfort 1 Select step Adjust the value to reach the projected extraction pressure. 1 Select step Adjust the value to reach the projected extraction pressure Set the required constant supply airflow. 514 Set the balance to the maximum projected supply airflow. 514 Set the balance to the maximum projected supply air pressure. The supply air pressure can be calculated as follows: Supply air pressure = Extraction pressure x Balance 33/72

34 Commissioning and operation Method 4 or 6 Method 4 Constant pressure regulation of supply air with set extraction. Method 6 Constant pressure regulation of supply air with slave-controlled extraction. Setting Go to menu Action supply air pressure at Economy/Standby supply air pressure at Comfort Method 4: constant extraction airflow Method 6: balance at Comfort 1 Select step Adjust the value to reach the projected supply air pressure. 1 Select step Adjust the value to reach the projected supply air pressure Set the required constant extraction airflow. 514 Set the balance to the projected extraction airflow Comfort setting in (menu 1) Go to menu 513 Select in menu 513 User One of steps 1 10 when The user can set the Comfort level from step Typically used for methods 1 and 2. The Comfort level setting must be fixed. The Comfort level is typically set to step 10. Should be used for methods 3 7. NB Irrespective of the setting in menu 513, the user can always select OFF in menu 1. Re-set the DISPLAY panel to technician mode, (see the section entitled Switch between user modes ) Re-connection of EON modules If modules EON-CO2, EON-RH and EON-PIR have been removed, they must be reconnected Compensation of airflow Compensation Compensation of the airflow is carried out by a closed sensor sending signals to the automatic control system, which, on the basis of these signals, can then reduce or increase the required airflow. Airflow compensation can always be carried out, irrespective of whether the unit is in Economy, Standby or Comfort mode. Airflow compensation can be carried out on the basis of the following measurements: Outdoor temperature, (airflow reduced as the temperature falls). Air quality in the room (CO 2 content of the air). Humidity of the air in the room (RH of the air). All compensation options can be connected and active at the same time, and so can be used simultaneously to control the airflow. 34/72

35 Commissioning and operation Reading of current control signals The current control signals for extraction and supply air are shown in the chart below. In the row for the airflow regulation method selected, (if necessary, see the section entitled Selection of airflow regulation method ), you can see which menu contains the set points for extraction and supply air. Airflow regulation method (menu 571) Control signal extraction, menu no. Control signal supply air, menu no External compensation of airflow (menu 54) Function When the control system is in operation, this function can be used to reduce the required airflow if the outdoor temperature is falling. Selection of outdoor air compensation Step Go to menu Action Activation Select Yes If appropriate, select new T_LO temperature (The lower set point for outdoor air temperature compensation) If appropriate, select new T_HI temperature (the upper set point for outdoor air temperature compensation). Example: Compensation of airflow for outdoor air temperature 1. Comfort airflow at step 7. The outdoor temperature is Airflow is A lower than T_LO equivalent to airflow at step 1. B between T_LO and T_HI gradually reduced between Comfort airflow and step 1. C higher than T_HI equivalent to Comfort airflow. 35/72

36 Commissioning and operation CO 2 compensation, (menu 55) Requirements Function NB A CO 2 sensor (EON-CO2) must be fitted before you can select CO 2 compensation of the airflow. When the automatic control system is operative, this function can be used to increase the required airflow when the CO 2 concentration in the room increases. The CO 2 level is not used to start or switch operating level. Selection of CO 2 compensation Step Go to menu Action 1 Connect the EON-CO2 module as described in the supplementary instructions. 2 Switch on the power supply to the unit To see the current CO 2 level in the room If appropriate, select new CO2_LO value (the lower set point for CO 2 compensation) If appropriate, select new CO2_HI value (the upper set point for CO 2 compensation). Example: CO2 compensation 1. Comfort operation. 2. Economy or Standby operation. The concentration of CO 2 in Airflow the air is A less than CO2_LO equivalent to the step shown in menu 1. B between CO2_LO and CO2_HI gradually increased from the step shown in menu 1 to the airflow at step 10. C higher than CO2_HI increased to the airflow at step /72

37 Commissioning and operation Humidity compensation of airflow (menu 56) Requirements Function NB Selection of humidity compensation An RH sensor (EON-RH) must be fitted in order to be able to select humidity compensation of the airflow. The sensor is placed in the room where you wish to make the compensation for example, in a bathroom or similar. When the automatic control system is in operation, this function can be used to increase the required airflow when the humidity level in the room rises. Humidity compensation of the airflow is not used to start or switch operating level Step Go to menu Action 1 Connect the EON-RH module as described in the supplementary instructions. 2 Switch on the power supply to the unit To see the current humidity measurement in the room If appropriate, select new RH_LO temperature (the lower set point for humidity compensation) If appropriate, select new RH_HI temperature (the upper set point for humidity compensation). Example: Humidity compensation 1. Comfort operation. 2. Economy or Standby operation. The humidity level in the air Airflow is A less than RH_LO equivalent to the step shown in menu 1. B between RH_LO and RH_HI gradually increased from the step shown in menu 1 to the airflow at step 10. C higher than RH_HI increased to the airflow at step /72

38 Commissioning and operation 5.3 Initial adjustment of temperature Temperature adjustment Temperature adjustment is carried out as serial regulation of the following elements: Modulating heating coil Modulating bypass of cross-flow heat exchanger If required, control of external cooling unit (EON-XCU) Select You can choose between: Supply air regulation (menu 681 = no): Typically used when the unit serves several rooms with different loads (sun, people, machines). The temperature is regulated in relation to the built-in temperature sensor in the supply air spigot. Room temperature regulation (menu 681 = yes) Typically used when the unit serves several rooms with identical loads. The temperature is regulated in relation to the built-in temperature sensor in the extraction spigot or via an external duct or room sensor (accessory). Compensation Each form of regulation provides different options for set point compensation. 38/72

39 Commissioning and operation Basic settings Before choosing a regulation method, a number of basic temperature settings should be considered. To carry out all the settings, follow the instructions in the sections below. Limits for supply temperature, section Min. temperature Max. temperature Max. ΔT-temperature Limits for indoor climate level, section ΔT-Comfort ΔT-Standby T_COOL_ECO T_HEAT_ECO Supply temperature regulation, section Temperatureadjustmentmethod Room temperature regulation, section External compensation of the supply temperature Summer compensation of the room temperature Limits for supply air temperature NB The settings below only need to be altered if you have special requirements. Otherwise, the factory settings can be used. Setting lowest permissible supply air temperature highest permissible supply air temperature lowest permissible supply air temperature below room temperature Go to menu NB 643 possible setting: 10 C...20 C 644 possible setting: 30 C...40 C 645 this makes it possible to prevent condensation on the supply air battery, and sudden temperature drops. Possible setting: t: 2 C...15 C 39/72

40 Commissioning and operation Limits for indoor climate level NB NB The settings below only need to be altered if you have special requirements. Otherwise, the factory settings can be used. Setting permissible temperature deviation at Comfort level. permissible temperature deviation at Standby level. set point for temperature regulator for the cooling unit if fitted at Economy level. set point for temperature regulator for post-heating coil at Economy level. Go to menu The setting ranges for the points listed above depend on the choices made in menu 2, and the settings limit each other. NB 661 This point cannot be higher than menu 662. This temperature difference acts as a neutral zone between the post-heating coil and the cooling unit if fitted during Comfort operation. 662 This point cannot be lower than menu 661. This temperature difference acts as a neutral zone between the post-heating coil and the cooling unit if fitted during Standby operation. 663 This temperature applies for Economy level irrespective of the selection made by the user in menu This temperature applies for Economy level irrespective of the selection made by the user in menu 2. Example: Set point temperature 22 C: T_Comfort max. 40 o C Cooling requirement (22+3 = 25 o C) T_Cool Economy (e.g. 30 o C) T_Comfort 22 o C (22+1 = 23 o C) Bypass T_Comfort (+/- 1K) (22-1 = 21 o C) T_Standby (+/- 3K) T_Comfort min. 10 o C (22-3 = 19 o C) Heat requirement T_Heat Economy (e.g. 16 o C) Comfort Standby Economy RD12731GB-01 40/72

41 Commissioning and operation Supply air temperature regulation Technician mode Set the DISPLAY panel to technician mode, (see the section entitled Switch between user modes ). Go to menu 681 If you require supply air temperature regulation, select no. Outdoor air compensation If you require outdoor air compensation, select a value in accordance with the information below. Outdoor air compensation aims to compensate for the energy that a building radiates when the outdoor air temperature is low, or absorbs when the outdoor air temperature is high, thus maintaining a constant temperature in the building. Example: Supply air temperature 20 C If the supply air temperature is too cold when the temperature outdoor is low, hot when the temperature outdoor is low, cold when the temperature outdoor is high, hot when the temperature outdoor is high, then menu 6421 and/or 6422 must be raised and/or 6422 lowered and/or 6424 must be raised and/or 6424 lowered. 41/72

42 Commissioning and operation Room temperature regulation Technician mode Set the DISPLAY panel to technician mode, (see the section entitled Switch between user modes ). Go to menu 681 If you require room temperature regulation, select yes. Summer compensation If you require summer compensation, select a value in accordance with the information below. The function of summer compensation is to raise the room temperature when the temperature outdoor is high, to reduce the temperature difference people experience when entering or leaving the building. This results in a better indoor climate. Example: Room temperature 20 C If the room temperature is too cold when the temperature outdoor is high, hot when the temperature outdoor is high, then menu 6521 must be lowered and/or 6522 must be raised must be raised and/or 6522 lowered. 42/72

43 Commissioning and operation 5.4 Safety functions HCE safety functions Slope limitation of output supplied Output supply limited to max. 25% per minute. Output removed without slope. The slope may result in the heating output figure shown (menu 61) exceeding the actual output value. Maintaining the correct temperature in the heating coil Two thermal triggers ensure that the heating coil doesn t overheat. The TSA70 disconnects at 70 C and resets automatically. The TSA90 disconnects at 90 C and is reset manually. Communication monitoring If communication between the HCE master and the control system breaks down, the output requirement is reset to zero and an alarm is triggered. Airflow monitoring (accessory) NB If an airflow monitoring unit (AFC2) is fitted, this can be chosen to ensure that the minimum airflow is maintained: Step Action 1 Set the DISPLAY panel to specialist mode. 2 Go to menu Select yes. If heating is required and the airflow is not higher than 220 m 3 /h (60 l/s), an alarm will be triggered Registration of icing in the cross-flow heat exchanger Temperature registration Selection of temperature Selection of time delay NB When temperature registration is selected, the exhaust temperature in the unit is measured. Icing is registered when the temperature falls below the value selected for longer than the selected time delay. Step Action 1 Select menu Select the temperature required. Step Action 1 Select menu Select the time delay required. The de-icing procedure is always terminated when the exhaust temperature (TE12) is 2 C higher than the TE12 temperature setting. 43/72

44 Commissioning and operation De-icing function How does ice form? Icing on the extraction side of the cross-flow heat exchanger results from a combination of: High humidity in the extraction air. Low outdoor air temperature Large difference in temperature between outdoor air and extraction air. Setting the alarm time If de-icing cannot be carried out satisfactorily, the unit stops and an alarm is triggered. An alarm is triggered if the de-icing process is not completed before the alarm time selected has expired. Step Action 1 Select menu Select the alarm time required Selection of method If the required method is then in menu Air reduction (reduction of supply air airflow) select. Bypass de-icing select. Air reduction For de-icing by air reduction, the supply air airflow is reduced to level 1. If de-icing has not been completed after half the alarm time has elapsed, the supply air fan will stop. Bypass de-icing Bypass de-icing is carried out as follows: Phase Description 1 The control system registers icing on the cross-flow heat exchanger. 2 The bypass damper opens slowly (10% per minute). The normal temperature regulation system will deal with supplying power to the electric heating coil. 2a If the energy supply is not sufficient, the following safety system will come into effect. The bypass damper remains in its position when the temperature in the return pipe falls below 7 C above the stop limit (menu 713). At factory settings: 13 C + 7 C = 20 C. The bypass damper closes slowly when the temperature in the return pipe falls below 5 C above the stop limit (menu 713). At factory settings: 13 C + 5 C = 18 C. 3 When ice is no longer registered on the cross-flow heat exchanger, the bypass damper will close again slowly (10% per minute). 44/72

45 Commissioning and operation Operating mode in the event of fire 3 operating modes You can choose between three different operating modes in the event of fire. The operating mode selected should abide by the legislative requirements from the local authorities: Go to menu 731 and Operating mode select method 0 (factory setting) Supply air and extract air stopped. 1 Supply air stopped and extract air 100%. 2 Supply air and extract air 100%. Operating mode activation The selected operating mode under the Fire Alarm function is activated if the closed current circuit on one of the two inputs (BT40/50 and BT70) on the connection board is broken. These inputs may be used to connect: Smoke detectors Fire thermostats (e.g. BT40, BT50 or BT70) BMS Fire control systems If an input is not used it should be bridged BT, Fire thermostats Background A fire thermostat is a temperature-controlled electrical circuit breaker fitted in the aspiration and/or extraction ducts. If the air temperature exceeds the level set in the thermostat, the contact set breaks the circuit and the continued operation of the ventilation unit is then determined by the mode of operation (method 0, 1 or 2) selected in menu 731. Reconnection, which must be carried out manually via the thermostat, cannot be completed until the air temperature has dropped by at least 15ºC. Thermostat properties The fire thermostats must feature the following properties: Potential free switch. Closed circuit principle: closed power circuit = no alarm broken power circuit = alarm. Manual reset of the thermostat itself. Good quality thermostats and sensors that are suited to the purpose. Extraction duct BT40/50 The contact set breaks at air temperatures in excess of 40 C/50 C. For positioning in the extraction duct. Aspiration duct BT70 The contact set breaks at air temperatures in excess of 70 C. For positioning in the aspiration duct. 45/72

46 Commissioning and operation Testing the fire thermostats If the installation features multiple fire thermostats, these must be tested individually. Test the fire thermostats as described in the chart below: Step Action 1 Check the DISPLAY panel. The light diode must not be red (it may be yellow). 2 Trigger a single fire thermostat as follows: Use the fire thermostat test function (if it has one), or use hot air, or remove a cable from the fire thermostat. 3 Check the DISPLAY panel. The light diode should now be red. Select menu 3, check that A30 is displayed in line 2 along with the time and date. 4 Reset the fire thermostat or reconnect the cable. 5 Go to menu 82 in the DISPLAY panel. Select yes to acknowledge the alarm. 6 Check that the light diode on the DISPLAY panel is not lit (or shines yellow). 7 Repeat all the steps from 3 onwards for the remaining fire thermostats. 5.5 Service List of EON modules connected Language selection Step Action 1 Select menu 921 and check the total number of EON modules connected. 2 Push and turn the switch, review the list of EON modules connected. Step Action 1 Select menu Push the switch and turn it backwards or forwards until the language required is shown in the display. 3 Press again to select the new language. NB Some menus are displayed in English, irrespective of the language chosen. 46/72

47 Commissioning and operation 5.6 The DISPLAY panel DISPLAY panel QUICK GUIDE for the VEX100 range Light Display Operating switch Operating switch Turn the switch to move between menus in the display. Press the switch to set the value in the menu (menus 1 and 2 only). Display Daily users have access to menus 1, 2 and 3. Menu Display Function 1 1 Airflow* Setting the airflow to Comfort level. Step Temperature* 20 C Setting the required temperature :43 Fri Comfort (AUT) Time, day and indoor climate level. The alarm and information numbers are displayed in the bottom line when the light is illuminated. The light When menu 3 displays A.. i.... Reset menu 82 and the lamp is red yellow yellow then... In menu 3, read... an alarm has been triggered in the unit. operation is inconsistent. inconsistent is operation. the alarm number (e.g. A14) and contact the person responsible for operation. You will find a list of alarms in the supplement entitled List of alarms and menus for VEX the information number (e.g.. i20) and identify the cause from the list below. Then contact the person responsible for operation. info number. This is the number of an active piece of information that has been pushed out of the alarm list memory (which can hold up to 10 pieces of information) on account of a periodical information message on the list. Go to menu 82 to reset the list. Information list Info. no. in menu 3 means Info. no. in menu 3 means i20 De-icing of the cross-flow heat exchanger i61 Extraction: airflow lacking *). started. i40 EON bus unit(s) lacking. i62 Extraction: pressure lacking *). i42 DISPLAY panel set to specialist mode i65 Filter control for outdoor air triggered. connected. i43 Timer backup battery exhausted i66 Supply : airflow lacking *). i50 Thermal cut-out TSA 70 for the electric i67 Supply : pressure lacking *). heating coil triggered. i60 Filter control for extraction triggered. i73 airflow to cooling unit lacking *). *) Only shown if the accessory in question is fitted. 47/72

48 Commissioning and operation Using the DISPLAY panel The display The user interface is built up of menus shown on an LCD display (consisting of 2 16 characters). A B 1 Airflow * Step 5 D C Figure A B C Display text Menu number, the number of digits corresponds to the submenu level. Text Menu status field Menu status field displays Press operating switch No function > Go to submenu < Return to main menu * Editing possible value (flashes) Editing in progress D Value and unit, if any Editing Editing is possible when the menu status field displays *: 1. Press the operating switch. 2. The value in the status field flashes start editing. 3. Set the value by turning the operating switch: turn the switch clockwise to increase the value, turn the switch anti-clockwise to decrease the value. 4. Press the operating switch to save the value selected and conclude the editing process. 48/72

49 Commissioning and operation Operating modes The operation of the air handling unit can be carried out in three modes, depending on the person operating the unit and on which settings are to be entered. The chart below illustrates the three modes.: Operating mode Person User mode Users in the room office staff, for example. Technician mode Specialist mode The person responsible for the operation of the unit. EXHAUSTO s service fitters / specially trained personnel. Operating options in the DISPLAY panel Menus 1 3 The entire menu structure is visible, but the setting options are limited to the menus marked with an asterisk (*) in the DISPLAY panel. The entire menu structure and all setting options are accessible. Example: The chart shows the setting options in each operating mode for the regulation of the extraction airflow: User mode Menu 1 Setting: step Technician mode Menu511og512 Setting: % Specialist mode Menu 574 Setting: % 512 Step 10 * 85 % (Menu 521) (Menu 911) % U_fan_max % Volt Airflow * Step 6 FanSpeed_comfort FanSpeed_max FanSpeed_exhaust FanSpeed_supply FanSpeed_min U_fan_exhaust U_fan_supply Step 1 * 50 % U_fan_exhaust_min Motor_1_MIN * 25 % 10 0 U_fan_start Depends on the motor type. Can not be changed. 0 NB Note how the specialist mode settings limit the technician s setting scale (25 100%) and how the settings in technician mode define the user s scale (step 1 = 50%, step 10 = 85 %). Factory settings The actual settings of the unit are listed in the List of alarms and menus for VEX /72

50 Commissioning and operation Switch between user modes (user/technician/specialist) When the control system is exited, it must be left in user mode. Switch to technician mode Go to menu 3. Action Press and hold in switch for approx. 5 sec. until code appears in the display. Enter the four-digit code: Turn the switch to select each figure and then press to confirm. Menu displays 3 10:43 Fre Comfort(AUT) Technician code 0000 Technician code 3142 You are now operating in technician mode. 4 Mode > Returning to user mode Action Menu displays Go to menu 4. 4 Mode < Turn the switch to the left until the menu displays EXIT. EXIT < Press the switch. You are now operating in user mode. 3 10:43 Fri Comfort(AUT) Switch to Specialist mode In specialist mode you can set parameters that affect the fundamental set-up of the unit. Do not use this mode unless you have received sufficient instruction or training The drawing shows the sliding switch behind the DISPLAY panel: Sliding switch Normal operation. User and technician modes. Sliding switch Specialist mode: Set the sliding switch to position. Use the push button on the panel to confirm. 9 Service > The display shows. The diode will now be yellow, indicating that specialist mode has been activated. REMEMBER to return the sliding switch to its original position, before leaving the installation. 50/72

51 Commissioning and operation 5.7 Setting the weekly clock menu 423 Pre-programming The weekly clock is pre-programmed at the factory with the following periods and climate levels: Day Period Pre-programming Climate level Monday Friday Off Standby Comfort Standby Off Saturday, Sunday All day Off Example: The graph shows the climate level setting for the period in question. Below the graph, you can see the graphic display that also shows the second line of the display (16 characters at a time). Summertime The clock automatically switches to summer and winter time (the night before the last Sunday in March, and the night before the last Sunday in October). Menu screen - menu 423 B C D A Mon 00:00 EDIT * E F A Day selected. B Time selected. C The arrow points to the current climate level in line 2. D Text E Menu status field F Graphic presentation of climate level, 1 block = 10 min. 51/72

52 Commissioning and operation Before changing the preprogrammed weekly clock Determine the ventilation requirements for every day of the week: Divide the days into periods on the basis of ventilation requirements: Comfort Standby Economy Off (see section 1.3 for a description of these levels). An example of a period could be: Monday Comfort operation. Make the required changes to all the weekdays one by one in menu 423. Example reprogramming The example below shows how to re-programme the weekly clock, step by step. NB When programming, it is only possible to turn the timer forwards. If you turn the timer too far forward for a block, the period will be overwritten, and the overwritten time will have to be reprogrammed again. Step Action Display Timer 1. Press. Select EDIT by turning and pressing. 2. Press to edit the figures. (Setting the start time for the first block). 3. When the time is correct: Press to save. Mon 00:00 EDIT * Mon 00:00 OFF * Mon 05:00 OFF * 4. Turn forwards until you reach the climate level required, and then press to save. 5. Select the finish time for the block and press to save. 6. Return to step 1 to edit the next period, if necessary. Mon 05:00 ECO * Mon 06:50 ECO * New settings following reprogramming. Weekdays Period Climate level 52/72

53 Commissioning and operation 5.8 The TOUCH panel TOUCH panel QUICK GUIDE for the VEX100 range C B D A Operating switches Switch Press the switch when Activation of ventilation by NB A there are people in the room. high air replacement (preset level). Can be set for automatic cut-out via the timer function. B people leave the room. low air replacement or stop (preset level). Can be set to cut out other TOUCH panels, if any. The lights Light is Meaning red Alarm. Contact the person responsible for operation. C yellow unusual operation. If the light remains illuminated for an extended period, contact the person responsible for operation. D green High air replacement selected from this panel. 53/72

54 Commissioning and operation The diodes A B A is red A is yellow B is green Diode Meaning Alarm, contact the person responsible for operation. Read the alarm number from the DISPLAY panel in menu 81 and refer to the section entitled List of DISPLAY panel alarms. The filters in the unit must be replaced. Comfort level operation selected from this panel. B is not illuminated Economy or Standby operation. Unit off. Comfort level operation but selected from a different panel Using the TOUCH panel to adjust the indoor climate The clock (menu 4) The clock is used to control the programmed weekly plan for indoor climate levels. The clock basically decides the applicable indoor climate level. Function 2 selectedthe chart below shows the applicable climate level when the TOUCH panel is activated (and function 2 Timer function Master has been selected behind the panel. See the section entitled Setting the address and function of the TOUCH panel ): Indoor climate level according to the clock s weekly plan Indoor climate level when you press Indoor climate level when you press Comfort Standby Comfort (timer defined) *) Standby Standby Comfort (timer defined) *) Economy Economy Comfort (timer defined) *) Unit stopped Unit stopped Comfort (timer defined) *) *) Menus can be used to set the time limitation. 54/72

55 Commissioning and operation 5.9 Setting the filter controls Method of operation The filter controls monitor the filters in the air handling unit by registering pressure drop across them. A filter control is fitted to each filter. When the pressure drop exceeds the value entered for the filter control, the light diodes on the DISPLAY and TOUCH panels turn yellow. The information number i..in menu 3 indicates which filter control has been triggered. Positioning The filter controls are fitted in the connection box at the top of the VEX unit. The filter controls are secured with snap locks so they are easy to remove for setting purposes, for example. Factory setting From the factory, the filter controls are set to the lowest value on the scale. The diode on the panels will therefore turn yellow when the unit is started. Setting the filter controls NB EXHAUSTO recommends that you replace the filters when the pressure drop has increased by 100 Pa, which is equivalent to a reduction of the airflow by 12 15%. However, the filters must be inspected every 6 months, and must be replaced at least once a year. The filter control values can be altered if a different interval between filter replacements is required, or if requirements regarding the permissible drop in the unit s airflow before filter replacement have been laid down. Before setting the filter controls: Initial adjustment concerning the max. airflow of the unit must be carried out. The filters must be clean. Set the filter controls as described in the chart below Step Action 1 Remove the lid from the connection box. 2 Use the DISPLAY panel to set the max. airflow: Select menu 1 and set the value (0 10) to 10 or to the maximum applicable airflow. 3 Make sure that any dampers in the duct system are open. 4 Turn the filter control scale up until the (yellow) diode on the DISPLAY panel is extinguished. 5 Slowly turn the filter control scale down until the (yellow) diode on the DISPLAY panel is illuminated again. NB The system reacts very slowly, so the adjustment must be carried out slowly. Repeat the adjustment process if necessary. 6 RD Read the value indicated by the arrow. 7 Determine the pressure drop value for filter replacement (EXHAUSTO recommends setting the filter control to the value read Pa). 8 Set the filter control so that the arrow points to the required pressure drop. 55/72

56 Maintenance 6. Maintenance 6.1 Measuring points for pressure, temperature and air-flow Layout drawing The drawing shows the positioning of the measuring points for the VENT arrangement in the unit: VEX Hose no Designation on drawing qv2- qv2+ qv1- qv1+ PDS2- PDS2+ PDS1- PDS1+ Hose colour pink red light blue blue light green green light brown brown 56/72

57 Maintenance Measurements Type Airflow Calculations Use the following equation and the Duct 12 diagram at the end of this section to calculate extraction airflow q v 1. p= q v 1+ q v 1- Pa Use the following equation and the Duct 22 diagram at the end of this section to calculate supply airflow q v 2. Pressure loss for Pressure rise across the fans Temperature efficiency Assimilated output p= q v 2+ q v 2- Pa Extraction filters are calculated on the basis of the following equation. p= PDS1+ PDS1- Outdoor air filters are calculated on the basis of the following equation. p= Cross-flow heat exchanger, extraction side, is calculated on the basis of the following equation. p= PDS2+ PDS2- PDS1- q v 1+ Cross-flow heat exchanger, supply side, is calculated on the basis of the following equation. p= PDS2- q v 2+ p HCE Pa p HCE is stated in the section entitled Technical specifications. Extraction side, is calculated on the basis of the following equation. p= p 12 q v 1+ Pa p 12 is measured in duct 12. Supply side, is calculated on the basis of the following equation. p= p 22 q v 2+ Pa p 22 is measured in duct 22. Pa Pa Pa Read the temperature in the DISPLAY panel, and calculate the efficiency as follows: t = TE22 TE21 TE11 TE21 When taking temperature measurements, the energy supply to the post-heating coil must be disconnected (see the item concerning heating coils) and the outdoor air temperature must be below +10 C. NB: When comparing with catalogue data, the volume flow ratio must be 1.0 or 0.8. The total electricity supply to the fans and electric heating coil is to be measured in the respective power supply cables by the service switch or the fuse box. NB: The actual output of the heating coil may be limited by the temperature conditions. Please also refer to the specifications and information plate. 57/72

58 Maintenance Airflow measurement, Extraction VEX140 HCE Duct 12 (extract air) Airflow measurement, Supply VEX140 HCE Duct 22 (supply air) Accuracy of airflow measurement: 8% 58/72

59 Maintenance 6.2 Maintenance chart Recommended intervals The chart below contains the recommended intervals for maintenance of the unit. The intervals are guidelines for normal operating conditions. EXHAUSTO recommends that you adapt the maintenance of the unit to suit the applicable operating conditions. Filters To be replaced when the diode on the panels turns yellow. The information number in menu 3 indicates which filter control has been triggered. When you remove the filters, immediately place them in a plastic bag, seal it and dispose of it in a responsible manner. You should change the filters at least once a year. Check that the seals in the filter frames seal tightly. Seals and sealing strips Check that they all seal tightly. Fans and heating coil Check. Cleaning see the following section. Cross-flow heat exchanger/bypass damper Check. Cleaning as required see the following section. Condensation outlet Pour water into the condensation tray to check that the outlet is not blocked. Checking the safety functions Fire thermostats Closing damper and flue gas damper Check Months Cleaning the fans Step Action 1 Switch off the power supply to the unit at the repair switch. 2 Clean the impeller with a vacuum cleaner and wipe down with a damp cloth if necessary. Clean the blades on the impeller carefully to avoid disrupting the balance. If there are weights on the impeller, these must not be removed. 3 After cleaning the impeller, check that the unit does not vibrate when operating. Checking the hoses to the measuring points 4 Remove the hoses from the connection box. 5 Blow through the hoses to remove impurities. 59/72

60 Maintenance Cleaning the heating coil Step Action 1 Switch off the power supply to the unit at the repair switch. 2 Vacuum clean the heating coil. 3 Check that the fins on the heating coil are not deformed. The fins are sharp Cleaning the cross-flow heat exchanger Step Action 1 Switch off the power supply to the unit at the service switch. 2 Remove the contact between the bypass motor and the unit. 3 Remove the cross-flow heat exchanger. 4 Press the trigger button on the bypass motor and turn the damper to open the blind. 5 Remove the bypass motor before the cross-flow heat exchanger is cleaned with water. See the drawing. Do not activate the trigger button on the bypass motor while it is disassembled as this will alter the position of the motor in relation to the damper. 6 Spray the cross-flow heat exchanger with hot water. You can also use a high-pressure water jet to clean it. Max. water temperature 90 C. 7 Refit the bypass motor. The damper must be in the same position (air vane fully open) as when the motor was removed. 8 Close the air vane, replace the cross-flow heat exchanger and reconnect the bypass motor cable. 60/72

61 Troubleshooting 7.Troubleshooting NB In the event of errors or irregular operation of the unit. Check the alarm list in menu 81 on the DISPLAY panel to see the alarm message, and then refer to the supplement entitled List of alarms and menus for VEX Alarm list menu Alarm list * A14 22 Mar 13: Resetting alarms Press and turn the switch on the DISPLAY panel to view the last 10 alarms on the alarm list. The alarms are divided up into two levels: Alarms named: A01, A02, A... These alarms must be investigated and reset straight away. Information messages named: i20, i40, i... Identify the cause Alarms may only be reset if the cause of the alarm has been corrected. Menu 82 All the alarms can be reset in one of the following ways: Resetting alarms by selecting yes in menu 82 ( Reset alarm ). Switch off the power supply to the unit for around 30 seconds. Multiple alarms If several alarms are active, they will all be cancelled simultaneously. Repeated alarms If an alarm is triggered repeatedly, contact a service technician. 61/72