505309-UIM-D-0511
Johnson Controls Unitary Products 13
For additional connection diagrams for all Johnson Controls Unitary Products’ equipment refer to “Low Voltage System Wiring” document available
on-line at www.upgnet.com in the Product Catalog Section.
FIGURE 18: Thermostat Chart - Single Stage AC with Single Stage PSC Furnaces

AC 15A

C
24– Volt Common
R
24– Volt Hot
Y1
First Stage Compressor
Y2
Second Stage
Compressor
G
Fan

*DN22H00124

*DP22U70124

THERMOSTAT
E/W1
First StageAux. Heat
W2
Second Stage
Aux. Heat
C
24– Volt Common
Y
FirstStage Compressor
Y2
Second Stage
Compressor
G
Fan

*PP32U70124

THERMOSTAT
W2
Second StageHeat
R
24– Volt Hot
(HeatXFMR)
RC
24– Volt Hot
(Cool XFMR)
W
First StageHeat
PartNumber:
S1-2HU16700124
1
(G/L)*(8/9)T
(F/L)*(8/9)T
PT(8/9)

ID MODELS

PartNumbers:
SAP = Legacy
265903 = 031-09168
2
C
24– Volt Common
R
24– Volt Hot
W / W1
First StageHeat
W2
Second StageHeat
Y/Y2
Second orFull
StageCompressor
TWOSTAGE PSC
FURNACE
G
Fan

TWOSTAGE PSC

FURNACE

Y1
Single Stage
Compressor
2

TWOSTAGE

AIR

CONDITIONER

C
24– Volt Common
R
24– Volt Hot
Y1
First Stage Compressor
Y2
Second Stage
Compressor
External Humidistat
(Optional)
Openon Humidity Rise
24VACHumidifier
(Optional)
1
Thermostat Installer Setup
0170-SystemType-must
be set to 8-2Heat/2 Cool
Multistage Conventional
Connectionof the “C”
terminal, 24-Volt common
is optional whenused with
batteries
Connection of the“C”
terminal, 24-Volt common
is optional whenused with
batteries
Two StageAir Conditioner - Two Stage PSC Furnace
TM9*
449573