438335-UIM-C-1209
16
Johnson Controls Unitary Products
FIGURE 21:
Thermostat Chart - Two Stage HP with Two Stage Variable Speed Furnace (Hot Heat Pump or Conventional)
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
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
449572
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
HP 24A
Two Stage Heat Pump – Two Stage Variable Speed Furnace (Hot Heat Pump or Conventional)
Change Hot Heat Pump
jumper on the heat pump
control to “ON” if Hot Heat
Pump Operation is desired.
Bonnet Sensor Kit
(Optional)
S1-37309243000
TM(8/9)V
