505309-UIM-D-0511
14 Johnson Controls Unitary Products
FIGURE 19: Thermostat Chart - Two Stage HP with Two Stage PSC Furnace

HP 22A

O
ReversingValve
Energized in Cool
C
24– Volt Common
R
24– Volt Hot
W1 OUT
First Stage Heat
W2 OUT
Second StageHeat
Y2OUT
Second Stage
Compressor
Y1
Single Stage
Compressor
X/L
Malfunction Light
Y2
Second Stage
Compressor
W
AuxiliaryHeat
BS
Bonnet Sensor
BSG
Bonnet Sensor
YORKGUARDVI
CONTROL

TWOSTAGE

HEATPU MP

Change FFuel jumper
on the heat pumpcontrol
to“ON”
3
PartNumbers:
SAP = Legacy
126768 = 031-09137
18395 = 031-01996
340512 = 031-09178
3
Change Hot Heat Pump
jumper on the heat pump
control to“ON” if Hot Heat
PumpOperation is desired.
YZE

ODMODELS

YZH
H*5
H*8
BonnetSensor
(Optional)
C
24– Volt Common
R
24– Volt Hot
Y1
First Stage Compressor
O
ReversingValve
Energized in Cool
L
Malfunction Light
Y2
Second Stage
Compressor
G
Fan

*DN22H00124

*DP22U70124

THERMOSTAT
E/W1
First StageAux. Heat
W2
Second Stage
Aux. Heat
C
24– Volt Common
Y
First Stage Compressor
O/B
Reversing Valve
L
Malfunction Light
Y2
Second Stage
Compressor
G
Fan

*PP32U70124

THERMOSTAT
E
Emergency Heat
R
24– Volt Hot
(Heat XFMR)
RC
24– Volt Hot
(Cool XFMR)
AUX
AuxiliaryHeat
Step 1 ofThermostat
Installer/Configuration
Menumust be set to “HP2”
Selection ofGAS/ELEC
switchon thermostat
not necessary
Thermostat Installer Setup
0170-SystemType-
must beset to 12
3 Heat/2Heat Pump
Thermostat Installer Setup
0190-Changeover Valve-
mustbe set to 0
O/B terminal
Energizedin Cooling
Thermostat Installer Setup
0200-BackupHeat Source-
mustbe set to 1
Heat PumpBackup Heat
Source is Fossil Fuel
Thermostat Installer Setup
0210-External Fossil Fuel
Kit tb tt 1
PartNumber:
S1-2HU16700124
1
(G/L)*(8/9)T
(F/L)*(8/9)T
PT(8/9)

IDMO DELS

C
24– Volt Common
R
24– Volt Hot
W / W1
First Stage Heat
W2
Second StageHeat
Y/Y2
Second or Full
StageCompressor
TWO STAGEPSC
FURNACE
G
Fan

TWOSTAGE PSC

FURNACE

Y1
Single Stage
Compressor
PartNumbers:
SAP = Legacy
265903 = 031-09168
2
2
External Humidistat
(Optional)
Openon Humidity Rise
24VACHumidifier
(Optional)
1
Two Stage Heat Pump -Two Stage PSC Furnace (Hot Heat Pump or Conventional)
TM9*
449573