ELECTRONIC THERMOSTAT: T901

Transcription

1 μnistδt ELECTONIC THEMOSTAT: T One contact output DESCIPTION The T series proportional thermostats are microcomputer based, proportional and integral (PI) devices with one contact time proportioning output. They can be used with most relays and actuators that are compatible with on/off control signals. The thermostats also contain two dip switch to adjust the following parameters : Internal or external remote sensor Direct or reverse acting mode Type of output On/off N.C. devices On/off N.O. devices SPECIICATIONS In cooling DX cooling relay On/off N.C. valve On/off N.O. valve * NSB not available * In heating Duct heater relay Baseboard relay On/off N.C. valve On/off N.O. valve * NSB not available * Operating Conditions: 0 C to C ( to ) 0% to 9%.H. non-condensing Sensor: Local K NTC thermistor esolution: ± 0. C ( ± 0. ) Control accuracy: ± 0. C ( ± 0. ) ( calibrated ) anges: 0 C to C ( to ) Night setup for cooling mode ( TN only ): C ( 9 ) night setup Night setback for heating mode ( TN only ): C ( 9 ) night setback Proportional band for room temperature control:. C (. ) output: Power: Isolated triac: 0 Vac, ½ A max. -%, +0% /0 Hz; VA DAY-NIGHT MODE ( TN ONLY ) The TN has a day / night input and an override button and night mode led mounted on the thermostat cover. The night mode, initiated by a remote timer or computer contact, provides energy savings during unoccupied periods of up to 0 %, without sacrificing comfort in occupied rooms. A flashing LED indicates that the thermostat is in Night mode. The occupant may override this condition locally for. hours by pressing the button on the thermostat cover. When output is in NSB input activates Cooling mode C (9 ) night setup Heating mode C (9 ) night setback Note: Day-Night mode does not operate with N.O. valves DIMENSIONS WIING OM TOP O OM BACK SECUITY SCEW HOW TO ODE T - D = Day C = C scale N = Night = scale Notes: Example: TD-C BASE." ( mm ) Order changeover sensors such as S0, S, S0 and S separately. Vertical covers are standard. without night mode Lexan cover with: C 0 0." ( mm )." ( mm )." mm Issue Date: May,

2 VAC CONTACT OUTPUT THEMOSTAT INSTALLATION This output is designed to give true PI time proportioning modulation out of position on/off relays or valves. This time proportioning modulation gives a much more precise temperature control than conventional mechanical on / off thermostats with anticipator. When stabilized, the thermostats will cycle the end device ( relay or valve ) times per hour with a duty cycle that varies with demand. The output is normally cooling but can be reversed to heating mode with different methods: An internal dip switch reverses the output to a fixed heating mode Auto changeover to heating mode with a supply sensor. A remote sensor can be used for each thermostat.( S0 or S or S ) Supply temperature > ( C) = heating mode Supply temperature < ( C) = cooling mode Hysterisys is ( C) Auto changeover to heating mode with a dry contact. A closed contact on the changeover input will change operation of the on/off output to heating mode. Open contact = cooling mode Closed contact = heating mode Characteristics of changeover sensor KΩ ( S0, S or S ). Temperature Temperature C Sensor resistance.0. C 9.0 Kohm C.0 Kohm 0.0. C. Kohm C. Kohm 0.0. C. Kohm C. Kohm.0. C. Kohm 0.0. C. Kohm.0. C. Kohm 0.0. C. Kohm C 9.0 Kohm 0.0. C.9 Kohm Important. Electronic controllers require special care for wiring and startup. To avoid problems, carefully follow the procedures below. Be sure to have all the literature on hand for all components installed: controller, actuators, relay, etc... Look at the wiring diagrams, and study them carefully. Be sure that you understand how the system is supposed to work. Make the wiring according to the wiring diagrams. espect polarity for power terminals # & # between multiple controllers if the same transformer is used. emove security screw on left side of thermostat cover. Open up by pulling on the bottom side of thermostat. A) Location: - Shouldn t be installed on outside wall. - Must be installed away from any heat source. - Shouldn t be affected by direct sun radiation. - Nothing must restrain vertical air circulation to the thermostat. B) Installation: - Pull out cables out of the wall. - Wall surface must be flat and clean. - Separate the thermostat and the base by pulling the cover by the bottom (same as the security screw.) - Insert cable in the central hole of the base. - Align the base and mark the location of the two mounting holes on the wall. Install proper side of base up. - Install shields in the wall. - Insert screws in mounting holes on each side of the base. DO NOT OVETIGHTEN! - Strip each wire / inch. 9- Insert each wire according to wiring diagram. 0- einstall the cover ( top side first ) and gently push back extra wire length in the hole in the wall. - Install security screw.

3 DIP SWITCH ADJUSTMENTS PE APPLICATIONS S APPLICATION SWITCH S MAIN TEMPEATUE SENSO O or N.C. valve in cooling Main temperature sensor is remote mounted or N.O. valve in heating O ( Not for supply control applications ) or DX cooling relay ON or N.C. valve in heating or N.O. valve in cooling or Duct heater relay ON internal sensor for room temperature sensing or Baseboard relay S switch is not used CONTOL CUVES AND SEQUENCE Opened 00% Device opened SETPOINT DIAL Device opened % Heating mode changeover input active Cooling mode Closed 0% Device closed Temperature increase TYPICAL APPLICATIONS On / Off Valve Control or Heating Dip switch position S S To use with a Normally Closed valve ON ON To use with a Normally Opened valve O ON On/Off N.C. Or N.O. Valve Heating 0 0 Control NSB emote Sensor 0 0 Control On/Off N.C. Or N.O. Valve Heating

4 On / Off Valve Control or Cooling Dip switch position S S To use with a Normally Closed valve O ON To use with a Normally Opened valve ON ON NSB On/Off N.C. Or N.O. Valve Cooling 0 0 Control emote Sensor On / Off Valve Control With: Cool / Heat Auto Dip switch position S S To use with a Normally Closed valve O ON To use with a Normally Opened valve ON ON On/Off N.C. Or N.O. Valve Cooling And Heating Optional Water Supply Sensor 0 0 Control NSB emote Sensor Supply water temperature sensor

5 Dip switch position S S ON ON 0 0 Control relay On / Off elay or Heating NSB emote Sensor relay VAC POWE AND CONTACT OUTPUT TYPICAL WIING SAME TANSOME TO POWE THE END DEVICE ( ELAY O VALVE ) Va. On/off device SEPAATE TANSOME TO POWE THE END DEVICE ( ELAY O VALVE ) Va. On/off device Power Supply -% +0% /0 HZ VA Note: terminals,, and can be wired together between each thermostat if polarity is respected Important: if using a common transformer, respect polarity ( and between each thermostat )

6 EMOTE TEMPEATUE SENSO TYPICAL WIING If a remote sensor is used, set dip switch S to position 0 (off). types of remote sensor can be used for different applications.. S0 or S for remote duct sensor applications. S0 for remote room sensor applications. S for immersion sensor applications Do not use the remote sensor in supply or discharge control applications. It will result in unstable control. emote sensor input O S0 or S Duct O S Immersion S0 oom CHANGEOVE INPUT TYPICAL WIING MULTIPLE TANSOMES ( DY CONTACT O ALL THEMOSTATS ) Open contact = Cooling mode. Closed contact = Heating mode Do Not Ground Any To Earth Cool / Heat SINGLE TANSOME ( DY CONTACT O ALL THEMOSTATS ) Open contact = Cooling mode. Closed contact = Heating mode Cool / Heat SUPPLY CHANGEOVE SENSO PE THEMOSTAT ( SUPPLY SENSO PE THEMOSTAT ) Auto Using An S0, S Duct Supply Sensor Or S Immersion Supply Sensor Supply Temperature > ( C) = Heating Mode Supply Temperature < ( C) = Cooling Mode Hysterisys Is ( C) Between Heating And Cooling Cool / heat automatic changeover input S0 or S Duct O S Immersion

7 NSB INPUT TYPICAL WIING ( TN ONLY ) MULTIPLE TANSOMES Closed = night mode. contact can be used for all thermostats on the same transformer. Do Not Ground Any To Earth Mode SINGLE TANSOME Closed = night mode. contact can be used for all thermostats on the same transformer. Mode Viconics Electronics Inc. 9, Langelier Blvd, St-Leonard, Quebec, Canada HP K LIT-TX-E0.doc LIT-TX-E0