835966-UIM-A-0112
Johnson Controls Unitary Products
11
FIGURE 12:
Thermostat Wiring –
Single Stage Heat Pump (with YGVI control)
– V/S Air Handler
Single Stage Heat Pump (with YGVI control) – V/S Air Handler
ID MODELS
AV
MV
THERMOSTAT
S1-THSU32P7b
S1-THSU32HP7b
VARIABLE
SPEED
AIR HANDLER
SINGLE STAGE
HEAT PUMP
VARIABLE SPEED
AIR HANDLER
CONTROL
YORKGUARD VI
CONTROL
C
24 - Volt Common
Y1
First Stage
Compressor
R
24 - Volt Hot
G
Fan
Fault
W3
Third Stage Heat
Y2
Second Stage
Compressor
W2
Second Stage Heat
W1/O/B
First Stage Heat
HUM
(only on S1-
THSU32HP7b)
DHUM
(only on S1-
THSU32HP7b)
COM
24 - Volt Common
Y/Y2
Second or Full
Stage Compressor
R
24 - Volt Hot
G
Fan
W1
First Stage Heat
W2
Second Stage Heat
Y1
First
Stage Compressor
O
Reversing Valve
Energized in Cool
X/L
Malfunction Light
HUM
Humidity Switch
Open on Humidity Rise
HUM OUT
(24 VAC out)
Humidifier
EAC
(24 VAC out)
Electronic Air Cleaner
Jumper 1 must be set
to “HEAT PUMP”
Jumper 2 must be set
to “O”
Jumper 3 must be set
to “ELEC”
Setup Step 24 “NUMBER
Of Compressor Stages”
must be set “1”
24VAC Humidifier
(Optional)
24VAC
Electrontic Air Cleaner
(Optional)
Part Number:
SAP
536805
Move the HUM STAT
jumper to “YES”
if humidistat is to be
used.
Refer to AH
documentation
for W1 and W2 electric
heat staging options.
Part Numbers:
SAP
524851
500644
Change FFuel jumper
on the heat pump control
to “OFF”
BS
Bonnet Sensor
BSG
Bonnet Sensor
W
Auxiliary Heat
Y2
Second Stage
Compressor
X/L
Malfunction Light
O
Reversing Valve
Energized in Cool
W1 OUT
First Stage Heat
W2 OUT
Second Stage Heat
Y2 OUT
Second Stage
Compressor
R
24 - Volt Hot
Y1
Single Stage
Compressor
C
24 - Volt Common
1
2
1
2
