Johnson Controls Hx 3 S1-THXU430W - Page 75

5407934-UIM-C-1119
Johnson Controls Ducted Systems 75
DUAL FUEL SYSTEMS
(Furnace and Heat Pump continued)
If using thermostat dual fuel logic select HP.
Select REMOTE SENSOR - OUTDOOR in the thermostat service menu.
A1241-001
Single Stage Air Handler
2-Stage Aux Heat
INDOORTHERMOSTAT
Single Stage HP
OUTDOOR
R
C
Y
R
C
G
W1
W2
Y1
Y2
24 VAC
Outputs
R
C
G
W1
Y/Y2
O
W
W1 out
W2
Single Stage HP Heat AND Cool
2-Stage Aux Heat
O/B
AIR HANDLER/HEAT PUMP SYSTEMS
2-Stage Furnace
INDOOR
R
C
W
W1 out
Y2 out
Y1
R
C
G
W1
W2 W2 W2 out
Y1
Y2
Y2
24 VAC
Outputs
R
C
G
W1
Y1
Y/Y2
O
O
THERMOSTAT
2-Stage HP Heat AND Cool
2-Stage Gas Heat
Tstat controls FFUEL & LTCO
2-Stage HP
FFuel Jumper = OFF
LTCO Jumper = ON
OUTDOOR
OD Sensor
Req’d for use
of fossil fuel
operation
O/B