Thermostat Wiring - Single Stage Heat Pump (With Ygvi Control) - Psc Air Handler - York YZF Installation Manual

THERMOSTAT
S1-THSU21P1b
C
24 - Volt Common
Y1
First Stage Compressor
R
24 - Volt Hot
G
FAN
W2
Second Stage Heat
W1/O/B
First Stage Heat
External Humidistat
(Optional)
Open on Humidity Rise
Jumper 1 must be
set to "HEAT PUMP"
Jumper 2 must be
set to "O"
Jumper 3 must be
set to "ELEC"
FIGURE 13: Thermostat Wiring – Single Stage Heat Pump (with YGVI control) – PSC Air Handler
Johnson Controls Unitary Products
Single Stage Heat Pump (with YGVI control) - PSC Air Handler
AHR
First Stage Compressor
24VAC Humidifier Relay
(Optional)
24VAC Electronic
Air Cleaner Relay
(Optional)
ID MODELS
MA
PSC
AIR HANDLER
PSC
AIR HANDLER
CONTROL
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
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
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
835966-UIM-E-0814
SINGLE STAGE
HEAT PUMP
YORKGUARD VI
CONTROL
C
24 - Volt Common
Y1
Single Stage
Compressor
R
24 - Volt Hot
W1 OUT
First Stage Heat
W2 OUT
Second Stage Heat
Y2 OUT
Second Stage
Compressor
O
Reversing Valve
Energized In Cool
X/L
Malfunction Light
Y2
Second Stage
Compressor
W
Auxiliary Heat
BSG
Bonnet Sensor
BS
Bonnet Sensor
Change FFuel" jumper "
on the heat pump control
to "OFF"
A009-001
13