835966-UIM-A-0112
Johnson Controls Unitary Products
13
FIGURE 14:
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
S1-THSU21P1b
THERMOSTAT
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
W2
Second Stage Heat
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
24VAC Humidifier
(Optional)
24VAC
Electrontic Air Cleaner
(Optional)
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.
Jumper 1 must be set
to “HEAT PUMP”
Jumper 2 must be set
to “O”
Jumper 3 must be set
to “ELEC”
Change FFuel jumper
on the heat pump control
to “OFF”
External Humidistat
(Optional)
Open on Humidity Rise
Y2
Second Stage
Compressor
X/L
Malfunction Light
O
Reversing Valve
Energized in Cool
W1 OUT
First Stage Heat
Y2 OUT
Second Stage
Compressor
R
24 - Volt Hot
C
24 - Volt Common
BS
Bonnet Sensor
BSG
Bonnet Sensor
W
Auxiliary Heat
Y1
Single Stage
Compressor
W2 OUT
Second Stage Heat
1
2
2
3
1
3
Part Number:
SAP
536805
Part Numbers:
SAP
524851
500644
Part Number:
S1-2HU16700124
