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

835966-UIM-E-0814
Single Stage Heat Pump (with YGVI control) - V/S Air Handler
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 "HEATPUMP"
Jumper 2 must be set
to "O"
Jumper 3 must be set
to "ELEC"
FIGURE 14: Thermostat Wiring – Single Stage Heat Pump (with YGVI control) – V/S Air Handler
14
AHV
Open on Humidity Rise
24VAC Humidifier Relay
(Optional)
Electronic Air Cleaner
24VAC Electronic
Air Cleaner Relay
Move the HUM STAT
(Optional)
if humidistat is to be
for W1 and W2 electric
heat staging options.
ID MODELS
MV
VARIABLE
SPEED
AIR HANDLER
VARIABLE SPEED
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
First
Stage Compressor
O
Reversing Valve
Energized in Cool
X/L
Malfunction Light
HUM
Humidity Switch
HUM OUT
(24 VAC out)
Humidifier
EAC
(24 VAC out)
jumper to "YES"
used.
Refer to AH
documentation
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
BSG
Bonnet Sensor
BS
Bonnet Sensor
Change "FFuel" jumper
on the heat pump control
to "OFF"
A010-001
Johnson Controls Unitary Products