835959-UIM-D-0814
10
Johnson Controls Unitary Products
FIGURE 8:
Thermostat Wiring – Two-Stage Heat Pump - Variable Speed Air Handler
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
Y2
Second Stage Compressor
G
Fan
THERMOSTAT
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
must be set to 12
3 Heat/2 Heat Pump
Thermostat Installer Setup
must be set to 0
O/B terminal
Energized in Cooling
Thermostat Installer Setup
must be set to 0
Heat Pump Backup Heat
Source is Electric
AUX
Auxiliary Heat
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
ID MODELS
MV
YORKGUARD VI
CONTROL
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.
OD MODELS
Change Hot Heat Pump
jumper on the heat pump
control to “ON”
A014-001
S1-THPU32HP7b
W3/Aux
Auxiliary Output
W1/O/B
First Stage Heat
W2
Second Stage Heat
Jumper 1 must
be set to “ELEC”
Jumper 2 must be
set to “O”
Jumper 3 must be
set to “HP”
HP 27C
Two Stage Heat Pump - Variable Speed Air Handler (With Hot Heat Pump Operation)
0190-Changeover Valve
0200-Backup Heat Source
0170-System Type
Can use “W3/Aux”
output to control
dehumidification
if desired
24VAC Humidifier Relay
(Optional)
24VAC Electronic
Air Cleaner Relay
(Optional)
AHV
*HJF60
