TR16 Wiring Diagram
RCS
TR16 CONTROL UNIT
C - 24VAC Common
Y2 – Comp Stage 2
HVAC SYSTEM
Y1 – Comp Stage 1
G – Fan
THERMOSTAT CONNECTOR
W2/O* – Heat Stage2
W1 – Heat Stage 1
R - 24VAC Return
* for HP HVAC Systems
O=Changeover Valve
TS16
WALL DISPLAY UNIT
S2
HP
OFF ON
2
S1 1
SW1
J2
RS485
GND
D -
D +
HEAT1
HEAT2
CO
FAN
COMP1
COMP2
STATUS
HFRU REV P
RH=RC
JP1
Cut Jumper
to split
Red
Green
White
Yellow
Orange
24V RC
G
W1
Y1
W2 / O*
24V COM
Y2
24V RH
J4
HVAC SYSTEM
J1
WDU
12V
GND
D
C
GND G
+12VDC +V
CLOCK C
DATA D
Fuse
Mini ATO
2 Amp
Blue
Gnd
RS485 Data+
RS485 Data
-
Black
Optional RS485 RJ45
Connector Pinout
1 Data+
2 Data -
3 NC
4 NC
5 NC
6 NC
7 NC
8 GND
Front View
12345678
Typical Thermostat wiring colors.
Optional RS485
RJ45 Connector
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 red wire to the RC terminal. Wire the cooling system’s 24VAC Com to the
control unit’s 24VAC Com terminal.
Dipswitch SW1 Settings:
(White is switch position)
SW1-S1, STANDARD OR HEAT PUMP SYSTEM SELECTION
SW1-S2 Fan or Change Over Valve Selection
HVAC Systems can be either Standard Gas/Electric systems or Heat Pump systems.
Set S1 to STD SYS (OFF) for Gas/Electric systems (default setting).
Set S1 to ON for Heat Pump systems
If S1 is set to Off for Standard HVAC systems, then S2 selects the HVAC
fan type
.
Set S2 to OFF for gas systems that do not require Fan w/heat calls.(default setting)
Set S2 to ON for electric systems.
If S1 is set to On for HP HVAC systems, then S2 selects the
changeover or reversing valve type
.
Set S2 to OFF for changeover with cooling (default setting).
Set S2 to ON for changeover with heating
DCN: 141-00930-09 7/13/06
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