RCS TU16, Installation And Operation Manual

Page 1: ...mbers and revisions or later IMPORTANT NOTICE DO NOT USE THIS PRODUCT FOR BUILDING FREEZE PROTECTION YOU ARE ADVISED TO INSTALL A MECHANICAL FREEZE PROTECTION DEVICE FOR THIS PURPOSE Product Rev Part No Firmware TU16 485 Thermostat P 001 01435 01 TS16 Wall Display Unit G 001 00910 13 TS16v350 HFUP HVAC Control Unit P 001 01435 03 HFUP0102 RCS Residential Control Systems Inc ...

Page 2: ...all either heating or cooling In addition to the universal Standard or Heat Pump HVAC systems support the TU16 has multistage heating cooling system outputs The control unit can support 2 stages of heating and cooling for Standard systems It supports 3 stages of heating and 2 stages of cooling for Heat Pump systems The TU16 has a convenient setup mode from the Wall Display Unit You can set the net...

Page 3: ...ange back to show current temperature The right decimal point on the LCD display will turn on whenever manual fan is ON The left decimal point will flash whenever the setback mode is ON Remote changes in setpoint or modes that are received by the WDU from the Control Unit will cause the LCD display to switch and display the updated data for 3 seconds and then return to room temperature Temperature...

Page 4: ...y MODE The MODE button sets the HVAC system Heating or Cooling mode To View The Current Mode Push the MODE button once and the LCD display will change to show the current mode To Change The Mode While the mode is being displayed pushing the MODE button again will go to the next mode The system mode cycles from Off to Heat to Cool to Auto and back to Off again with each push of the MODE button Once...

Page 5: ...ed to indicate addresses in the 200 to 254 range shown as 00 to 54 To exit press the mode button again or wait for the screen to time out and return to the normal thermostat temperature display Setting the Fahrenheit or Celsius mode In the setup mode press the mode button to select FC mode The TU16 is default set to F mode To change the degree mode press the UP DOWN buttons to select F or C as des...

Page 6: ...te sensor only Yes No Average internal and one remote No Yes Average two remotes only 2 Optional with A2 Yes with A1 When averaging sensors are used the average temperature is displayed on the WDU and reported to the HVAC control unit You cannot view an individual remote averaging sensor temperatures as the main thermostat display or report individual sensor temperatures on the communication port ...

Page 7: ...ng and Auto changeover In additional to the multiple stages the TU16 has adjustable temperature difference delta between stages and an adjustable deadband between heating cooling setpoints These control unit variables can be changed via network commands The examples below are based on the default settings In the HEAT mode the stage 1 heating will be turned on at one degree below the heating setpoi...

Page 8: ...m s requirements TU16 Control Unit HVAC System Outputs for Standard Systems Operating Mode Outputs no Fan with Heat Outputs Fan with Heat Manual Fan G G Cooling Stage 1 G Y1 G Y1 Cooling Stage 2 G Y1 Y2 G Y1 Y2 Heating Stage 1 W1 G W1 Heating Stage 2 W1 W2 G W1 W2 HEAT PUMP HVAC SYSTEM OPERATION The TU16 has Heat Pump operating modes of Heating Cooling Auto changeover and Emergency Heat The Heat P...

Page 9: ...curs before the delay period expires the CO relay will already be on and this avoids continuous on off cycling the CO valve for each call After the MOT period expires and another call is not active the CO output will go OFF TU16 Control Unit HVAC System Outputs for Heat Pump Systems Operating Mode Changeover with Cool Changeover with Heat Manual Fan G G Cooling Stage 1 G O Y1 G Y1 Cooling Stage 2 ...

Page 10: ...ultaneously press the Fan button This enters the system setup mode and Ad will be displayed Set the desired address by pressing the UP DOWN buttons until the desired address from 1 to 250 is selected Address from 1 to 99 are directly displayed on the WDU s 2 digit display Addresses from 100 to 199 are display as 0 to 99 with the center decimal point on Address from 200 to 250 are displayed as 0 to...

Page 11: ...eceived via the UPB Message Mode communications protocol UPB Setup Network ID Unit ID and Link Mode Base Address Password Network Room and Device Names Thermostat Data and Control Request temperature Request Heat Setpoint Request Cool Setpoint Request System Mode Off Heat Cool Auto Request Fan Mode Manual Fan Auto Off Request System Operating State Off Heating Cooling Fan On Off Request System Rel...

Page 12: ...hat require the heating system to be used for building freeze protection a mechanical backup freeze protection device MUST be installed on the heating system This can be a simple mechanical heating thermostat or a preset thermoswitch installed in the heated area Heating System Red Wire 24VAC R White Wire Heat W 40 45 R W Thermostat connections Wire across Heater R W terminals Mechanical Thermostat...

Page 13: ... applications the existing thermostat wiring a least 4 wires may be adequate However such non twisted wiring may be subject to interference due to noise from adjacent wiring or other sources Wiring to the Wall Display Unit Remote Sensor Wiring The TS16 WDU has an addition connector J2 on the WDU base for connection of an external remote temperature sensor Follow the wiring diagram with the remote ...

Page 14: ...he Control Unit looks like a standard thermostat to your HVAC system All connections to the HVAC system are made at the normal thermostat connections on the HVAC unit You are advised to refer to your HVAC system s documentation for specific information on its thermostat connections and setup requirements You must know the following 1 HVAC system type Gas Electric or Heat Pump 2 Fan type No fan wit...

Page 15: ...Heat Stage 1 Y1 Comp Stage 1 R 24VAC Return C 24VAC Common Red or RH for split systems Green White Yellow 24V RC W1 Heat 1 G Fan Y1 Comp 1 W2 Heat 2 HVAC SYSTEM THERMOSTAT CONNECTION TU16 Control Unit Typical thermostat wiring color codes Y2 Comp Stage 2 24V RH IMPORTANT For typical central heating cooling systems leave jumper JP1 installed If you have separate Heating and Cooling system transform...

Page 16: ...ump Systems RC and RH are common for Heat Pumps Heat Pump HVAC System G Fan W1 Heat Strips Heat Stage 3 Y1 Comp Stage 1 R 24VAC Return C 24VAC Common Red Green White Yellow 24V RH W1 Heat 1 G Fan Y1 Comp 1 W2 O CO HVAC SYSTEM THERMOSTAT CONNECTION TU16 Control Unit Typical thermostat wiring color codes Y2 Comp Stage 2 24V RC J4 Y2 Comp 2 O Changeover Valve Orange Black S2 Dipswitch SW1 Setup for H...

Page 17: ...ate Heating and Cooling systems These are essentially two systems with a common air handler or blower In this case there is a separate heating 24VAC transformer and a cooling 24VAC transformer This type of a system requires that the TU16 Control Unit be connected using a separate heating system power input R terminal RH and a separate cooling system power input R terminal RC When connecting to the...

Page 18: ... LED and relay should come on If they don t make sure the Status LED is not flashing twice indicating minimum off delay wait until LED stops flashing twice before proceeding 11 Press the Mode button until the WDU is showing O for OFF The Heat LED and relay will turn OFF 12 Wait 6 minutes for the minimum off delay to expire The Status LED will stop flashing twice 13 Press the Mode button until the ...

Page 19: ...sult Fan R to G Fan should come on Heating R to W Heat cycle should start for heating Cooling R to Y and G Compressor and Fan should start for cooling Heat Pump System Quick Test Similarly you can test Heat Pump operation by shorting across the following terminals Heat pump operation is determined by compressor calls in conjunction with changeover O outputs You must know what your system CO type i...

Page 20: ... HVAC Systems O Changeover Valve HVAC System Transformer Most central HVAC systems have a common heating and cooling transformer This is the factory default setting for Jumper JP1 In some cases you may have separate heating and cooling systems each with their own transformer In that case cut Jumper JP1 and wire the heating transformer red wire to the RH terminal and the cooling system transformer ...