361813-UIM-A-0208
Unitary Products Group
7
For additional connection diagrams for all UPG equipment refer to “Low Voltage System Wiring” document available online at www.upgnet.com in the
Product Catalog Section.
FIGURE 7:
Thermostat Wiring – Single Stage Heat Pump - PSC Air Handler (with Hot Heat Pump)
24VAC Humidifier
(Optional)
External Humidistat
(Optional)
Open on Humidity Rise
24VAC
Electronic Air Cleaner
(Optional)
3
HP 9A
Single Stage Heat Pump – PSC Air Handler (With Hot Heat Pump Operation)
MA
SHP
AHP
ID MODELS
PSC
AIR HANDLER
C
24 – Volt Common
R
24 – Volt Hot
W1
First Stage Aux. Heat
W2
Second Stage Aux. Heat
O
Reversing Valve
Energized in Cool
X/L
Malfunction Light
PSC
AIR HANDLER
G
Fan
2
Y1
Single Stage Compressor
Part Numbers:
SAP = Legacy
159480 = 031-09156
2
HUM
Humidity Switch
Open on Humidity Rise
Move the MODE
jumper to “HP”
EAC (24VAC out)
Electronic Air Cleaner
HUM OUT
(24VAC out)
Move HUM STAT
jumper to “YES”
if humidistat is to be used.
Refer to AH documentation
for W1 and W2 electric
heat staging options.
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
YORKGUARD VI
CONTROL
SINGLE STAGE
HEAT PUMP
1
H*3
YMB
YZB
OD MODELS
Part Numbers:
SAP = Legacy
126768 = 031-09137
18395 = 031-01996
340512 = 031-09178
1
C
24 – Volt Common
R
24 – Volt Hot
Y1
First Stage Compressor
O
Reversing Valve
Energized in Cool
L
Malfunction Light
G
Fan
*DP32H70124
THERMOSTAT
W1
Second Stage Aux. Heat
E
Emergency Heat
W2
Third Stage Heat
Step 1 of Thermostat
Installer / Configuration
Menu must be set to
Heat Pump 1
C
24 – Volt Common
R
24 – Volt Hot
Y1
First Stage Compressor
O
Reversing Valve
Energized in Cool
L
Malfunction Light
Y2
Second Stage Compressor
G
Fan
*BP21H50124
*BN21H00124
*DP21H40124
*DN21H00124
THERMOSTAT
E
Emergency Heat
W2
Second Stage Heat
B/O Switch on Thermostat
must be in the O position
C
24 – Volt Common
Y1
First Stage Compressor
O/B
Reversing Valve
L
Malfunction Light
Y2
Second Stage Compressor
G
Fan
*DN22U00124
THERMOSTAT
E
Emergency Heat
AUX
Auxiliary Heat
R
24 – Volt Hot
(Heat XFMR)
R
24 – Volt Hot
(Cool XFMR)
Part Number:
S1-2HU16700124
3
Y2
Second Stage Compressor
Thermostat Installer Setup
1-System Type-must be set
to 5 – 2 Heat/1 Heat Pump
Thermostat Installer Setup
2-Changeover Valve-must
be set to 0 – O/B terminal
Energized in Cooling
Second stage auxiliary
heat will be controlled by
the thermostat, not the
heat pump control when
wired as shown.
Change Hot Heat Pump
jumper on the heat pump
control to “ON”
Y/Y2
Second or Full
Stage Compressor
