Honeywell Comfort Window User Manual page 21

2. Regular System, 2 Heating Units
The second category of wiring configuration
schemes follows a single compressor, dual
heating unit (non-Heat Pump) system, with
either a shared transformer between the
compressor and the first Heating Unit or
separate transformers connected to RC1 and
RH1. In either case, a separate (potentially
third) transformer is needed for RH2.
First, you will need to choose whether your
system has a separate transformer for Heating
Unit #1 than for the Compressor.
outputs include Heating Stage 2, Cooling
Stage 2, Heating Stage 3, and Economizer
Damper Control. Refer to the following charts
while wiring up your system.
Chart 5: Required Wiring for Single
Compressor, Dual Heater Installations
Screw
Terminal Connect To
Number
1 Jumper to 4
Heater 2 Transformer
2
+24VAC
*Either Jumper to 4
(Shared Transformer)
OR
3
Heater 1 Transformer
+24VAC (Separate
Transformer)
Compressor
4 Transformer
+24VAC
5 Compressor Control
6 Fan Control
7 Heat Control
12 Heater 2 Control
15 -24VAC (Ground)
16 Indoor Temp Probe
17 Indoor Temp Probe
19 Indoor Temp Probe
* * *Caution! While there are some industry-wide
color-coding conventions, some thermostat makers do color-coding conventions, some thermostat makers do
not follow these conventions, so it is imperative to record
the previous configuration (both color and function) so
the correct wire can be connected to the appropriate
location on Comfort Window's wall-plate.
Optional
Std.
Function Wire
Color*
RC2 Red
RH2 Red
RH1 Red
RC1 Red
Y Yellow
G Green
W White
WH2 Dark Purple
Brown/Black
C
**
T1in Black*
T2in Yellow*
T3in Red*
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PCB0001C-01-BHP-PDII0614
Chart 6: Optional Wiring for Single
Compressor, Single Dual Installations
Screw
Terminal Connect To
Number
Heater 1 Stage 2
9
Control
Compressor Stage 2
10
Control
Outside
11
Temp/Humidity Probe
Outside
13
Temp/Humidity Probe
Economizer Damper
14
Control
Outdoor
16
Temp/Humidity Probe
18 Humidifier Output
Outdoor
19
Temp/Humidity Probe
**Note: Brown or Black are the most common
colors for 24VAC ground; however, white and
blue are also frequently used.
Function Proprietary
Wire Color
W2 NA
Y2 NA
OT2in Yellow
OH1in Green
ECD NA
OT1in Black
HUM NA
OT3in Red