835966-UIM-A-0112
14
Johnson Controls Unitary Products
FIGURE 15:
Thermostat Wiring – Two-Stage Heat Pumps - Two-Stage Variable Speed Furnaces
HP 24A
Two Stage Heat Pump – Two Stage Variable Speed Furnace (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
Bonnet Sensor
(Optional)
C
24 – Volt Common
Y1
First Stage Compressor
L
Malfunction Light
Y2
Second Stage Compressor
G
Fan
*PP32U71124
*PP32U72124
THERMOSTAT
R
24 – Volt Hot
E/W1
First Stage Aux. Heat
W2
Second Stage Aux. Heat
DHM
Dehumidistat
HM
Humidistat
O
Reversing Valve
Energized in Cool
Change FFuel jumper
on the heat pump control
to “ON”
Part Numbers:
SAP = Legacy
126768 = 031-09137
18395 = 031-01996
340512 = 031-09178
1
1
Part Numbers:
SAP = Legacy
265904 = 031-09169
2
C
24 – Volt Common
R
24 – Volt Hot
Y1
Single Stage Compressor
TWO STAGE
VARIABLE SPEED
FURNACE CONTROL
G
Fan
TWO STAGE
VARIABLE SPEED
FURNACE
W/W1
First Stage Heat
Y/Y2
Second or Full
Stage Compressor
W2
Second Stage Heat
O
Reversing Valve
X/L
Malfunction Light
DHUM
Dehumidification
2
Move HEAT PUMP
jumper to “YES”
Move DHUM
jumper to “YES”
if humidistat is to be used.
PV(8/9)
ID MODELS
(F/L)*(8/9)V
YORKGUARD VI
CONTROL
(G/L)(8/9)V
YZE
OD MODELS
YZH
H*5
H*8
24VAC Humidifier
(Optional)
Step 1 of the Thermostat
Installer Table must be
set to Heat Pump
E2/P Switch must be in the
E2 position
Step 2 of the Thermostat
Installer Table must be
set to 2
Step 5 of Thermostat User
Configuration Menu must
be set to “ON” for
Dehumidification
Change Hot Heat Pump
jumper on the heat pump
control to “ON”