T8078C LOW VOLTAGE MODULATING CONTROLLER FEATURES APPLICATIONS PRODUCT SPECIFICATION SHEET

Transcription

1 LOW VOLTAGE ODULATING CONTROLLER FEATURES PRODUCT SPECIFICATION SHEET APPLICATIONS The digital electronic controller is designed for individual zone control of terminal units in fan coil and air conditioning systems. The controller provides position control of valves or dampers (for airside control), and is capable of mounting on a switching subbase for manual control of the fan speed. has great applications flexibility builtin all applications and control modes can be selected simply by setting a bank of switches inside the product. Control parameters are also adjusted by means of onboard switches. also supports a number of features that enhance the applications capability. These include remote sensing, energy savings mode (activated from an external input), remote setpoint adjustment, and heat/cool changeover. Installation and commissioning are assisted by a special fast commissioning checkout sequence, internal valve synchronisation, simple user diagnostic LED indication, and the provision of a diagnostic output. odern styling makes ideal for locating in the occupied space, particularly in offices and hotels. Proportional + Integral (P+I) control form ensures close temperature control under all operating conditions. Control modes and applications configured by onboard switches. Choice of control odes: 3position modulating thermal predictive modulating (TP) On/off Choice of : pipe fancoil cooling pipe fancoil heating pipe fancoil cooling +stage on/off heating pipe fancoil heating +stage on/off cooling pipe fancoil heat/cool changeover pipe fancoil heat + cool in sequence Choice of control parameters:,, or K for the Proportional Band, K for the Zero Energy Band Automatic heat/cool changeover is achieved by using a remote switch, or a pipe thermostat (S30A0) on the supply water pipe. Control setpoint can be remotely adjusted by ± K. Energy Savings Input a local contact closure or a central voltage input will switch T0C to Energy Savings ode, where the cooling and heating setpoints will change to predefined setup and setback temperatures, enabling maximum energy efficiency. Setup/setback values can be set K by means of an onboard potentiometer. Sensor options: Onboard or external (Wall mounted, or Remote/return air). The connection of an external sensor is detected automatically. Valve commissioning sequence for fast system check. Periodic valve exercise and synchronisation. Simple user diagnostics capability by means of a flashing LED mounted inside the thermostat cover. Diagnostic output for communication of diagnostic system information to a PC tool. Extra wide Input Voltage Specification : 30 Vac. Automatic calibration offset over full voltage range. Suitable for mounting either on the terminal unit or on the wall (surface or wallbox mounting). Wiring access from the rear, and surface wiring knockouts at the top and sides. Locking front cover. EN0R3 R 003

2 INDEX OF CONTENTS Page Contents APPLICATIONS OVERVIEW FEATURES OVERVIEW 3 SPECIFICATIONS PRODUCT APPLICATIONS TABLE SYSTE ARCHITECTURE OPERATION Control odes Operating odes Comfort ode Energy Savings ode Startup & Commissioning Diagnostics & Fault Indication ORDERING INFORATION SYSTE & PARAETER SELECTION SWITCHES How to Configure INSTALLATION Location ounting Wiring Layout & Terminal Connections APPLICATIONS ODULATING CONTROL () odulating Cooling () odulating Heating (3) odulating Cooling + Stage On/Off Heating () odulating Heating + Stage On/Off Cooling () odulating Heat / Cool Changeover () odulating Cooling + Heating Sequence APPLICATIONS ON/OFF CONTROL () On/Off Cooling () On/Off Heating () On/Off Cooling + Stage On/Off Heating () On/Off + Stage On/Off Cooling () On/Off Heat / Cool Changeover () On/Off Cooling + Heating Sequence APPLICATIONS TP CONTROL (THEROELECTRIC S) () TP Cooling () TP Heating () TP Cooling + Stage On/Off Heating () TP Heating + Stage On/Off Cooling () TP Heat / Cool Changeover () TP Cooling + Heating Sequence ADDITIONAL FEATURES Auto Heat / Cool Changeover Remote Temperature Sensing 0 Remote Adjustment 0 SUITABLE VALVES & S 0 OPTIONAL ACCESSORIES EN0R3 R 003

3 SPECIFICATIONS Power Supply: Vac nominal 0/0Hz, operating range 30 Vac Power Consumption:. VA nominal (electronics only) Output Load Rating: 0.3 A (maximum) for all outputs at Vac, with solid state switching Range: to 30 C Configuration/System Selection: ade via a bank of onboard dip switches Control odes: 3 different Control odes : odulating : 3position modulating P+I control, based on adjustable proportional Band (Xp), and 0sec valve runtime On/Off : Primary stage control is P+I on/off output based on adjustable Proportional Band (Xp) and a fixed cycle rate ( cycles/hour Cooling, cycles/hour heating) : Secondary stage control is P+I on/off output based on a fixed Proportional Band of K and a fixed cycle rate ( cycles/hour Cooling, cycles/hour heating) TP : Special on/off control mode for thermoelectric actuators Systems: different System types : Heat / Cool Changeover Cooling Only Cooling + optional stage On/off Heating Heating Only Heating + optional stage On/off Cooling Heating + Cooling Sequence Control Proportional Band (Xp): K, K, or K (depending on system) selected using DIP switches K for secondary stage Heating or Cooling stage control Zero Energy Band (ZEB): K or K selected using DIP switches Interstage Differential (ID): Fixed at K, for Systems with secondary stage Heating or Cooling Control Point Stability: ±0.K at 0 C Ambient Temperature Range: Operating range 0 to 0 C Storage Temperature Range: 0to C Relative Humidity: to, non condensing Remote Adjustment: ±K by remote unit, resistance input (QB, QC3) Energy Savings (Setup/Setback): to K setup/setback possible, by means of external contact closure input Value set by potentiometer on Contact closure can be local or central, to control a group of (up to 0 max) Heat/Cool Changeover: Automatic changeover by means of external contact closure input Input can be local (from aquastat) or central from switch/relay (controls up to 0 max) ounting: Directly onto wall or wallbox (xmm junction box with 0mm screw pitch) or inside terminal unit or fancoil Also mounts on fan speed subbase Q30A ounting accessory F00 available for other mounting configurations Wiring: x screw terminals capable of accepting up to.mm² stranded cable ax length of wiring to actuators is Enclosure: Flame retardant plastic housing Dimensions: 3. x 3. x 0 mm Protection Class: IP30 (IEC) Approvals: CE mark, conforming as follows : Directive (Amendments) Standards Applied 3/3/EEC (3//EEC) EN030:00 EN030: /33/EEC (3//EEC & //EEC) EN0: EN0: Sensors: Onboard sensor, type NTC0K Remote sensor TC0 (.m cable) auto detected on powerup aximum sensor extension is 0m (using screened cable) 3 EN0R3 R 003

4 PRODUCT APPLICATIONS Basic Application Controlled Device Control ode details of application Application No. pipe fancoil Valve control odulating cooling odulating heating On/off cooling On/off heating TP cooling (thermoelectric actuator) TP heating (thermoelectric actuator) Airside control (damper) odulating cooling odulating heating Terminal unit Damper control odulating cooling odulating heating pipe fancoil with auxillary electric heat Valve control odulating cooling + or stage on/off heating 3 ( or stage electric heating elements) On/off cooling + or stage on/off heating TP cooling + or stage on/off heating Airside control (damper) odulating cooling + or stage on/off heating 3 pipe fancoil with auxillary cooling Valve control odulating heating + or stage on/off cooling ( or stage chillers) On/off heating+ or stage on/off cooling TP heating + or stage on/off cooling Airside control (damper) odulating heating + or stage on/off cooling pipe fancoil with heat/cool changeover Valve control odulating heat/cool changeover On/off heat/cool changeover TP (thermoelectric actuator) heat/cool changeover pipe fancoil Valve control odulating cooling + heating in sequence On/off cooling + heating in sequence TP cooling + heating in sequence Airside control (damper) odulating cooling + heating in sequence or SYSTE ARCHITECTURE A diagram of compatible T0B system components is shown below. QC3 REOTE SETPOINT + SENSOR QB REOTE SETPOINT ADJUST UNIT QA0 SPACE TEP SENSOR TC0 SENSOR CONTROLLER Q30A SUBBASE ENERGY SAVINGS INPUT / CHANGEOVER S30A0 PIPE STAT ODULATING THERAL ON/OFF s L L N0 N3 C VALVES 0 Z0 0 VC V3C V3A V33A V3C V33C EN0R3 R 003

5 OPERATION Control odes gives a choice of 3 different output control modes, to suit a range of different actuators and system requirements. odulating Control 3position modulating control is a control form that exactly positions the control valve in order to satisfy the cooling or heating demand. For each valve actuator there are control outputs, one to drive the valve open, and another to drive the valve closed. The controller can send out control pulses to each of these outputs to move the valve to any position between fully closed and open. The required valve position is calculated using a P+I algorithm, with an adjustable Proportional Band (Xp), and valve actuator runtime of 0seconds. This type of control gives optimum performance over a wide range of conditions. On/Off Control (with P+I input) The on/off control form used by is one where the output is cycled on and off with a fixed cycled period. The ontime is adjusted by a P+I algorithm so the heating or cooling demand is met and the space is controlled to setpoint. The cycle rate is cycles/hour for cooling and heating. For the primary control stage, the Proportional Band (Xp) can be selected to be either,, or K, depending on the system. For the secondary control stages, the Proportional Band is fixed at K and the cycle rate is cycles/hour for cooling, cycles/hour for heating. This type of on/off control ensures closer control to setpoint than conventional on/off control based on a temperature differential. TP Control (for ThermoElectric Actuators) Thermoelectric (or thermal) actuators are very cost effective devices, but they present particular difficulties to control because of the timelags in their response to control inputs. Therefore uses a special Thermal Predictive odulating (TP) control to operate thermal actuators in the optimum way. This type of on/off control ensures closer control performance when using thermal actuators than conventional on/off control or pulsewidth modulating control. Operating odes has main operating modes, Comfort ode and Energy Savings ode, and also has a Startup / Commissioning ode which is entered immediately on powerup. Comfort ode This is the normal operating mode, where controls to the setpoint selected by the user. Energy Savings ode has an Energy anagement System, where the detection of an external input signal will cause the cooling and heating setpoints to change to predefined setup and setback temperatures, enabling maximum energy efficiency. This input signal must be in the form of a contact closure, connected to terminals and. Energy Savings ode continued In Energy Savings ode the Setup/Setback values can be set between K by means of an onboard potentiometer. In cooling only systems (,, ) the setpoint will be increased (setup) by the set value fixed by the potentiometer. In heating only systems (,, ) the setpoint will be decreased (setback). In heat/cool changeover systems (,, ) the heating setpoint will be decreased in heating mode, and the cooling setpoint will be increased in cooling mode. In cooling + heating systems (any system with a Zero Energy Band) the cooling setpoint will be increased by the set value and the heating setpoint will be decreased by the same amount. The setpoint remains the same, but the effect is to widen the Zero Energy Band. Energy Savings From Central Location A group of units can be switched to Energy Savings mode using a central switch. A maximum of 0 units can be switched this way, but extreme care must be taken to ensure the polarity of wiring connections is correct. Each controller will switch to its own predefined setback values, as set by its onboard potentiometer. Input Wiring Connections Single Unit Energy Savings 3 Central Energy Savings Switch should be rated 30 Vdc 0. ma nominal = Normal Operation = Energy Savings ode Switch should be rated 30 Vdc 0. ma nominal = Normal Operation x 0 units maximum Take care to always observe polarity of connection = Energy Savings ode EN0R3 R 003

6 Energy Savings ode Examples Startup & Commissioning On power up, will immediately undergo a test and synchronisation sequence to enable Installers and Commissioning Engineers to test the system is wired correctly. Test Sequence For all control modes, the test sequence will last 0 seconds, and will consist of switching the control outputs on and off in the sequence illustrated. The outputs are connected to terminals 3,,, and. If it is necessary to repeat the sequence, the power supply can be switched off then back on again. Valve Synchronisation The synchronisation sequence will depend on what type of Control ode has been selected. For modulating systems, the test sequence will be followed by a 3 minute valve synchronisation, where the valves will be driven to the closed position in order to establish a baseline control reference. For on/off and TP control systems, the valve closure sequence will last seconds. The synchronisation sequence will be repeated hours after power up, and thereafter every hours. This is designed to ensure there will be no disturbance to temperature control during normal hours of building occupancy. The Diagnostic LED will pulse on and off in the sequence illustrated for Terminal 3 if no faults are detected (see Section entitled Diagnostics & Fault Indication for a complete description). EN0R3 R 003

7 Diagnostics & Fault Indication provides simple user diagnostics and fault indication using an LED, positioned at the bottom right side of the printed wiring board. The cover must be removed to view the LED correctly. By pulsing the LED on and off in predefined sequences, is able to indicate valve position, heating or cooling demand, or whether a fault has been detected. The tables and graphs opposite give details of the how to interpret the LED outputs. Fault Indication If a fault is detected, this will be indicated as highest priority. Faults are indicated by,, or 3 LED pulses, followed by a second delay, then a repeat of the pulse sequence. ost detectable faults are due to errors in reading sensor or setpoint values. In the unlikely event of an internal sensor or unit setpoint fault, the controller must be replaced. If a remote sensor fault is indicated, it is likely to be a bad connection, so all wiring connections should be checked. Valve Position / Cooling or Heating Demand or cooling/heating demands are indicated by an initial code sequence of pulses, followed by the position or demand data, and this is repeated on a fixed cycle rate. The duration of the data pulse provides the important information, for example : The LED is switched on for a duration proportional to the valve position, where s on = valve fully open On/off or TP demand The LED is switched on for an amount proportional to the onperiod of the cycle, where s on = demand. will only provide demand or position data on the current operating output, and this will be indicated by the initial pulse sequence of,, or 3 pulses. The table below shows how to determine current operating mode & demand for each of the possible control options. Fault Internal Sensor out of range Remote Sensor out of range Faulty setpoint measurement Suggested Action Replace controller Check sensor connections Replace controller EN0R3 R 003

8 ORDERING INFORATION 0 : Controller Accessory Products QA0 : Wallmounted Remote Sensor QB : Remote Adjustment Unit (±K) QC3 : Remote Sensor + Adjust Unit TC0 : Remote Sensor (.m cable) S30A0 : Pipemounted Changeover Thermostat Q30A : Fan Speed Switching Subbase F0000 : Wallplate F0000 : Rangestops SYSTE &PARAETER SELECTION SWITCHES uses a bank of switches to enable configuration of the Control ODE, the SYSTE, and appropriate Control Parameters, such as PROPORTIONAL BAND (Xp) and ZERO ENERGY BAND (ZEB). These switches are located on the wiring board underneath the cover, on the bottom left hand side. See the diagram below for an explanation of the switch settings. How to Configure () Select Control Type, using switches S and S The choices are : TP (optimised for thermal actuator control) On/off odulating (3position control) sometimes also known as Floating control. () Select System Type, using switches S3 and S The choices are : stage cooling (+ optional stage on/off heating) stage heating (+ optional stage on/off cooling) stage heat/cool changeover (activated by external input signal) heat + cool sequence control (3) Select Control Parameters, using switches S and S Proportional Band X p = K, K or K (also dependant on system type) Zero Energy Band ZEB = K or K EN0R3 R 003

9 INSTALLATION Location may be located on the wall in the space to be controlled, or on the body of the terminal unit. With Inbuilt Temperature Sensor is supplied with a builtin temperature sensor. If this is to be used, then is the critical temperature control element in the airconditioning system, and must be located about.m above the floor in a position with good air circulation at room temperature. With Remote Temperature Sensor supports remote temperature sensing from a range of remote sensors or modules. In this case it is the position of the sensor that is critical : for return air sensing the remote sensor must be positioned within the terminal unit, duct, or plenum, in the return air stream where it is not affected by other influences for room temperature sensing the remote sensor or module must be located as for a with inbuilt sensor. Please note :. The maximum cable run between and remote sensor is 0m, and screened cable must be used.. uses it s inbuilt sensor, unless it automatically detects the presence of the remote sensor at powerup. So the must be powered down then back up again after a remote sensor is connected. ounting can mounted directly on the wall or on a suitable junction box of dimension x mm maximum. ounting screws are supplied ( x mm No. woodscrews, x mm 3. screws) and there are mounting hole locations on the controller that can be used. IPORTANT! The Installer must be a trained service engineer. Isolate the power supply before commencing installation. (3) ake the required wiring connections () Reattach the cover and tighten the locking screw to complete the installation. Wiring The standard wiring access is through a hole at the top and back of T0B, but there are wiring breakouts in the cover to allow surface wiring, if necessary. has wiring terminals all are suitable for the connection of up to.mm stranded cable. Take care not to overtighten the terminal screws during installation, as this can damage the joints. Refer to pages for details of all wiring schematics. ounting on Q30A Fan Speed Subbase Where 30Vac fanspeed switching is required, can be mounted on the Q30A switching subbase, using the screws supplied with Q30. All line voltage wiring connections should be made to the subbase before the controller is installed or wired. Line voltage subbase wiring and low voltage controller wiring should be clearly separated and must comply with all relevant local electrical codes. Layout & Wiring Connections () Unscrew the cover locking screw and remove the cover. () ount to the surface using the mounting screws provided. If it is to be mounted onto a terminal unit, the installer should use appropriate bolts or selftapping screws. Terminals. volt supply. volt supply (0v) 3. Valve open. Valve close. Valve common. Valve open / stage on/off control (applications 3,,,,,). Valve close / stage on/off control (applications 3,,,,,). Heat / Cool changeover input. Heat / Cool changeover input. Energy savings input. Energy savings input. Remote sensor input. Remote common (for remote sensor / setpoint inputs). Remote setpoint input EN0R3 R 003

10 APPLICATIONS ODULATING CONTROL () ODULATING ING X pc pipefcuvalvecontrol terminal unit damper control pipe fcu airside control pipe fcu airside control ) Proportional Band X pc =K or K. ) Use K Prop Band for pipe airside control, and wire damper motor as for actuator shown. Wiring Schematics port valves 3port valves TC VA V3A ~ Vac TC V3A,C V33A,C ~ Vac () ODULATING ING X ph pipefcuvalvecontrol terminal unit damper control pipe fcu airside control pipe fcu airside control ) Proportional Band X ph =K or K. ) Use K Prop Band for pipe airside control, and wire damper motor as for actuator shown. Wiring Schematics port valves 3port valves TC VA V3A ~ Vac TC V3A,C V33A,C ~ Vac EN0R3 R 003

11 APPLICATIONS ODULATING CONTROL (3) ODULATING ING + STAGE ON/OFF ING Wiring Schematics port valves H ID H H ZEB X pc pipe fcu valve control with or stage electric heat pipe fcu airside control with or stage electric heat TC ELECTRIC (STAGE H ) H ELECTRIC (STAGE H ) H VA V3A ~ Vac 3port valves ) Proportional Band X pc =K or K. ) Zero Energy Band ZEB=K or K. 3) Valve must be closed before heating comes on. ) Heating stages H &H are P+I on/off control with K prop. Band. ) H &H =K (fixed). ) Heating stages cycle rate=c/hour (fixed). ) Interstage Differential ID H =K (fixed). ) Stages H &H do not switch together 0s delay. ) For airside control, wire damper motor as for actuator shown. TC ELECTRIC (STAGE H ) H ELECTRIC (STAGE H ) H V3A,C V33A,C ~ Vac () ODULATING ING + STAGE ON/OFF ING X ph ZEB C ID C C pipe fcu valve control with or stage chiller pipe fcu airside control with or stage chiller ) Proportional Band X ph =K or K. ) Zero Energy Band ZEB=K or K. 3) Valve must be closed before cooling comes on. ) Cooling stages C &C are P+I on/off control with K prop. Band. ) C &C =K (fixed). ) Cooling stages cycle rate=c/hour (fixed). ) Interstage Differential ID C =K (fixed). ) Stages C &C do not switch together 0s delay. ) For airside control, wire damper motor as for actuator shown. Wiring Schematics port valves TC ING (STAGE C ) C ING (STAGE C ) C VA V3A ~ Vac 3port valves TC ING (STAGE C ) C ING (STAGE C ) C V3A,C V33A,C ~ Vac EN0R3 R 003

12 APPLICATIONS ODULATING CONTROL () ODULATING / CHANGEOVER Wiring Schematics port valves Heating ode X pch Cooling ode pipe fcu valve control with input signal for automatic changeover TC S30A / CHANGEOVER SWITCH VA V3A Vac 3port valves ) Proportional Band X pch =K or K. ) Wire as for Cooling control. 3) External input signal changes operating mode from cooling to heating. ) Contact closure signal from single aquastat. ) Contact closure signal from central control switch ensure correct polarity of connection to all units. TC S30A / CHANGEOVER SWITCH V3A,C V33A,C Vac () ODULATING ING + ING SEQUENCE X ph ZEB pipefcuvalvecontrol X pc Wiring Schematics port valves + 3port valves TC VA V3A ~ Vac ) Both Proportional Bands X pc &X ph =K or K. ) Zero Energy Band ZEB=K or K. 3) Heat valve is closed before cooling valve opens. ) Cool valve is closed before heating valve opens. + TC V3A,C V33A,C ~ Vac EN0R3 R 003

13 APPLICATIONS ON / OFF CONTROL () ON/OFF ING Wiring Schematics Drive open valves X pc pipefcuvalvecontrol + 3 ON TC ~ Vac Drive open / drive closed valves ) Control is P+I on/off. ) Cycle rate is c/hour (fixed). 3) Proportional Band X pc =K or K. ) Can use valves that require only to be driven in one direction (for example, with thermal actuators) or valves that require to be driven open, then driven closed. ) Normally closed valves: use output from (+) terminal to drive open. ) Normally open valves: use output from () terminal to drive closed. + 3 ON CLOSE OPEN TC ~ Vac () ON/OFF ING Wiring Schematics Drive open valves X ph pipefcuvalvecontrol TC ON + 3 OPEN Vac ~ Drive open / drive closed valves ) Control is P+I on/off. ) Cycle rate is c/hour (fixed). 3) Proportional Band X ph =K or K. ) Can use valves that require only to be driven in one direction (for example, with thermal actuators) or valves that require to be driven open, then driven closed. ) Normally closed valves: use output from (+) terminal to drive open. ) Normally open valves: use output from () terminal to drive closed. TC ON CLOSE + 3 OPEN Vac ~ EN0R3 R 003

14 For latest prices and delivery to your door visit ytub Ltd info@mytub.c APPLICATIONS ON / OFF CONTROL () ON/OFF ING + STAGE ON/OFF ING Wiring Schematics Drive open valves H ID H H ZEB X pc pipe fcu valve control with or stage electric heat TC ELECTRIC (STAGE H ) H ELECTRIC (STAGE H ) H ON ~ Vac Drive open / drive closed valves ) Cooling control is P+I form, with c/hour cycle rate. ) Cooling Proportional Band X pc =K or K. 3) Zero Energy Band ZEB=K or K. ) Cooling valve must be closed before heating comes on. ) Heating stages H &H are P+I on/off control with K Prop. Band. ) H &H =K (fixed). ) Heating stages cycle rate=c/hour (fixed). ) Interstage Differential ID H =K (fixed). ) Stages H &H do not switch together 0s delay. TC ELECTRIC (STAGE H ) H ELECTRIC (STAGE H ) H ON CLOSE VALVE ~ Vac () ON/OFF ING + STAGE ON/OFF ING X ph ZEB C ID C C pipe fcu valve control with or stage chiller Wiring Schematics Drive open valves TC ING (STAGE C ) C ING (STAGE C ) C ON ~ Vac Drive open / drive closed valves ) Heating control is P+I form, with c/hour cycle rate. ) Heating Proportional Band X ph =K or K. 3) Zero Energy Band ZEB=K or K. ) Heating valve must be closed before cooling comes on. ) Cooling stages C &C are P+I on/off control with K Prop. Band. ) C &C =K (fixed). ) Cooling stages cycle rate=c/hour (fixed). ) Interstage Differential ID C =K (fixed). ) Stages C &C do not switch together 0s delay. TC ING (STAGE H ) H ING (STAGE H ) H ON CLOSE VALVE ~ Vac EN0R3 R 003

15 APPLICATIONS ON / OFF CONTROL () ON/OFF / CHANGEOVER Wiring Schematics Drive open valves Heating ode X pch Cooling ode pipe fcu valve control with input signal for automatic changeover TC S30A / CHANGEOVER SWITCH ON ~ Drive open / drive closed valves ) Control is P+I form, with c/hour cycle rate (heating or cooling). ) Proportional Band X pch =K or K. 3) Wire as for Cooling control. ) External input signal changes operating mode from cooling to heating. ) Contact closure signal from single aquastat. ) Contact closure signal from central control switch ensure correct polarity of connection to all units. TC S30A / CHANGEOVER SWITCH ON CLOSE VALVE ~ () ON/OFF ING + ING SEQUENCE X ph ZEB pipefcuvalvecontrol X pc ) Both stages are P+I on/off control, with c/hour cycle rate. ) Both Proportional Bands X pc &X ph =K or K. 3) Zero Energy Band ZEB=K or K. ) Heat valve is closed before cooling valve opens. ) Cool valve is closed before heating valve opens. Wiring Schematics Drive open valves TC + ON ON ~ Drive open / drive closed valves TC CLOSE VALVE + ON ON CLOSE VALVE ~ EN0R3 R 003

16 APPLICATIONS TP CONTROL (THEROELECTRIC S) ) TP ING Wiring Schematic For normally closed valve drive to open X pc pipe fcu valve control (with thermal actuator) + 3 ON TC ~ Vac ) Special algorithm for thermal actuators. ) Proportional Band X pc =K or K. 3) Only suitable for normally closed valves: where actuator is powered to drive valve open. () TP ING Wiring Schematic For normally closed valve drive to open X ph pipe fcu valve control (with thermal actuator) TC ON + 3 OPEN Vac ~ ) Special algorithm for thermal actuators. ) Proportional Band X ph =K or K. 3) Only suitable for normally closed valves: where actuator is powered to drive valve open. EN0R3 R 003

17 APPLICATIONS TP CONTROL (THEROELECTRIC S) () TP ING + STAGE ON/OFF ING Wiring Schematic For normally closed valve drive to open H ID H H ZEB X pc pipe fcu valve control with or stage electric heat TC ELECTRIC (STAGE H ) H ELECTRIC (STAGE H ) H ON ~ Vac ) Cooling control is special algorithm for thermal actuators. ) Only suitable for normally closed valves: where actuator is powered to drive valve open. 3) Cooling Proportional Band X pc =K or K. ) Zero Energy Band ZEB=K or K. ) Heating stages H &H are P+I on/off control with K Prop. Band. ) H &H =K (fixed). ) Heating stages cycle rate=c/hour (fixed). ) Interstage Differential ID H =K (fixed). ) Stages H &H do not switch together 0s delay. () TP ING + STAGE ON/OFF ING X ph ZEB C ID C C pipe fcu valve control with or stage chiller Wiring Schematic For normally closed valve drive to open TC ING (STAGE C ) C ING (STAGE C ) C ON ~ Vac ) Heating control is special algorithm for thermal actuators. ) Only suitable for normally closed valves: where actuator is powered to drive valve open. 3) Heating Proportional Band X ph =K or K. ) Zero Energy Band ZEB=K or K. ) Cooling stages C &C are P+I on/off control with K Prop. Band. ) C &C =K (fixed). ) Cooling stages cycle rate=c/hour (fixed). ) Interstage Differential ID C =K (fixed). ) Stages C &C do not switch together 0s delay EN0R3 R 003

18 APPLICATIONS TP CONTROL (THEROELECTRIC S) () TP / CHANGEOVER Wiring Schematic For normally closed valve drive to open Heating ode X pch Cooling ode pipe fcu valve control with input signal for automatic changeover TC S30A / CHANGEOVER SWITCH ON ~ ) Control is special algorithm for thermal actuators. ) Only suitable for normally closed valves: where actuator is powered to drive valve open. 3) Proportional Band X pch =K or K. ) Wire as for Cooling control. ) External input signal changes operating mode from cooling to heating. ) Contact closure signal from single aquastat. ) Contact closure signal from central control switch ensure correct polarity of connection to all units. () TP ING + ING SEQUENCE X ph ZEB pipefcuvalvecontrol X pc Wiring Schematic For normally closed valves drive to open TC + ON ON ~ ) Control is special algorithm for thermal actuators. ) Only suitable for normally closed valves: where actuator is powered to drive valve open. 3) Both Proportional Bands X pc &X ph =K or K. ) Zero Energy Band ZEB=K or K. EN0R3 R 003

19 ADDITIONAL FEATURES Automatic Heat / Cool Changeover is suitable for automatic or central Heat / Cool Changeover, if configured for this ode of operation. This is applicable only for pipe fancoil systems, where the changeover is made on a seasonal demand basis. Configuration is done by setting System switches S3 and S to and 0 respectively. Automatic changeover is initiated by a thermostat positioned on the water flow pipe, detecting the presence of heated or chilled water, and sending the appropriate signal to the controller. A suitable product is the S30A0 pipethermostat. Central changeover is initiated by a switch, and can be used to centrally switch a group of connected controllers from Heating to Cooling operation. See wiring schematics for connection details. Remote Temperature Sensor is supplied with an onboard temperature sensor. If remote temperature sensing is required (for example in return air sensing applications), then a suitable Honeywell Remote Sensor can be connected to terminals and as shown in the wiring schematic. will auto detect the presence of the Remote Sensor on power up, and will use the Remote Sensor measurement in preference to its internal sensor. So if a Remote Sensor is to be connected, the power must be switched off then on again for it to be detected. Remote Sensors are available as wallmounted or airflow (return air) models. Both QA0 and QC3 contain the sensor in wallmounted form, whereas TC0 is an airflow sensor supplied with. m cable. If this cable is to be extended then the maximum cable run will be 0m, and the extension must use screened cable. Polarity of connection is not important, but the screen wire must be connected to terminal or, as shown. TC0 Sensor QA0 Wallmounted Sensor Note : x 0 units maximum Take care to always observe polarity of connection EN0R3 R 003

20 Remote Adjustment allows its setpoint to be adjusted remotely by up to ±K. This is achieved by the connection of a Remote Adjustment module to terminals and, as shown in the wiring schematic. Suitable modules are : QB (Remote Adjust) and QC3 (Sensor + Remote Adjust). Note the polarity of connection is not important as the input is purely resistive. To ensure measurement stability when wiring these modules, use screened cable and connect the screen wire to terminal or of as shown. The maximum cable run will be 0m. Suitable Valves & Actuators is compatible with a range of Honeywell valves and actuators, as shown in the table below. See relevant product Specificaton Sheets for more details. Valve Actuators C odulating 3pos, V~ ax of actuators (0.VA each) to be connected to any output 0A00 Thermoelectric, V~ Stroke mm ax of actuators (3VA each) to be connected to any output 0 Thermoelectric, V~ Stroke.mm Z0 Thermoelectric, V~ Stroke mm ax of actuators (3VA each) to be connected to any output Suitable Valves Conical Sealing VA way V3A 3way V3C 3way+bypass Flat Sealing V3A way V33A 3way V33C 3way+bypass Conical Sealing VA way V3A 3way V3C 3way+bypass Flat Sealing V3A way V33A 3way V33C 3way+bypass Conical Sealing VAxxx way V3Axxx 3way V3Cxxx 3way+bypass Flat Sealing V3Axxx way V33Axxx 3way V33Cxxx 3way+bypass Damper Actuators odulating 3pos, V~ Nm LB0 Nm LE Nm LE 0Nm N0 3Nm N3 ax no. to be connected to each output ax of 3 actuators (VA each) ax of actuators (VA each) ax of actuators (VA each) ax of actuator (VA each) ax of actuator (VA each) Optional Accessories Optional accessories are available for use with : F0000 Range stops (pack of 0) F0000 Wallplate Q30A Fan Speed Switching Subbase QA0 Wall mounted Remote Sensor QB Remote Adjust Unit (±K) QC3 Sensor + Remote Unit (±K) TC0 Return Air Sensor (.m cable) S30A0 Pipemounted Changeover Thermostat Honeywell Control Systems Limited Newhouse Industrial Estate otherwell L SB United Kingdom Honeywell 0 EN0R3 R 003