Johnson Controls Hx 3 S1-THXU430W - Wiring Diagrams

5407934-UIM-C-1119
Johnson Controls Ducted Systems 73
SECTION IX: WIRING DIAGRAMS
DUAL FUEL SYSTEMS (Furnace and Heat Pump)
Single Stage Furnace
or Modulating Furnace
INDOOR
THERMOSTAT
2-Stage HP Heat AND Cool
Single Stage Gas Heat
Tstat controls FFUEL & LTCO
2-Stage HP
FFuel Jumper = OFF
LTCO Jumper = ON
OUTDOOR
R
C
Y1
R
C
G
W1
W2
Y1
Y2
24 VAC
Outputs
R
C
G
W
Y1
O
O
W
W1 out
Y2 out
Y2
Y/Y2
OD Sensor
Req’d for use
of fossil fuel
operation
W2 out
O/B
Single Stage Furnace
or Modulating Furnace
OD Sensor
Req’d for use
of fossil fuel
operation
INDOOR
THERMOSTAT
Single Stage HP Heat AND Cool
Single Stage Gas Heat
Tstat controls FFUEL & LTCO
Single Stage HP
OUTDOOR
R
C
Y
R
C
G
W1
W2
Y1
Y2
24 VAC
Outputs
R
C
G
Y/Y2
OO/B
W
W1 out
W
Outdoor Equip Type = HP when thermostat uses dual fuel logic.
Select REMOTE SENSOR - OUTDOOR in the thermostat service menu.
A1239-001