501054-UIM-A-0909
Johnson Controls Unitary Products
11
FIGURE 13:
Thermostat Wiring – Two-Stage Heat Pump - Variable Speed Air Handler
HP 27C
Two Stage Heat Pump – Variable Speed Air Handler (With Hot Heat Pump Operation)
O
Reversing Valve
Energized in Cool
C
24 – Volt Common
R
24 – Volt Hot
W1 OUT
First Stage Heat
W2 OUT
Second Stage Heat
Y2 OUT
Second Stage Compressor
Y1
Single Stage Compressor
X/L
Malfunction Light
Y2
Second Stage Compressor
W
Auxiliary Heat
BS
Bonnet Sensor
BSG
Bonnet Sensor
TWO STAGE
HEAT PUMP
C
24 – Volt Common
R
24 – Volt Hot
Y1
First Stage Compressor
O
Reversing Valve
Energized in Cool
L
Malfunction Light
Y2
Second Stage Compressor
G
Fan
*DN22H00124
*DP22U70124
THERMOSTAT
E/W1
First Stage Aux. Heat
W2
Second Stage Aux. Heat
Step 1 of Thermostat
Installer/Configuration
Menu must be set to “HP2”
Selection of GAS/ELEC
switch on thermostat
not necessary
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)
Thermostat Installer Setup
0170-System Type-
must be set to 12
3 Heat/2 Heat Pump
Thermostat Installer Setup
0190-Changeover Valve-
must be set to 0
O/B terminal
Energized in Cooling
Thermostat Installer Setup
0200-Backup Heat Source-
must be set to 0
Heat Pump Backup Heat
Source is Electric
AUX
Auxiliary Heat
1
24VAC Humidifier
(Optional)
Part Numbers:
SAP = Legacy
159481 = 031-09157
2
COM
24 – Volt Common
R
24 – Volt Hot
W1
First Stage Aux. Heat
W2
Second Stage Aux. Heat
Y1
Single Stage Compressor
Y/Y2
Second or Full
Stage Compressor
O
Reversing Valve
Energized in Cool
X/L
Malfunction Light
HUM
Dehumidification-
Open on Humidity Rise
VARIABLE SPEED
AIR HANDLER CONTROL
G
Fan
Move the MODE
jumper to “HP”
Move HUM STAT
jumper to “YES”
if humidistat is to be used.
VARIABLE SPEED
AIR HANDLER
2
Part Numbers:
SAP = Legacy
126768 = 031-09137
18395 = 031-01996
340512 = 031-09178
1
AV
ID MODELS
SV
MV
YZE
YZH
H*5
YORKGUARD VI
CONTROL
H*8
24VAC
Electronic Air Cleaner
(Optional)
EAC(24 VAC out)
Electronic Air Cleaner
External Humidistat
(Optional)
Open on Humidity Rise
HUM OUT
(24 VAC out)
Refer to AH documentation
for W1 and W2 electric
heat staging options.
Second stage auxiliary
heat will be controlled by
the thermostat, not the
heat pump control when
wired as shown.
OD MODELS
Change Hot Heat Pump
jumper on the heat pump
control to “ON”
3
Part Number:
S1-2HU16700124
3