HP 28C Two Stage Heat Pump – Variable Speed Modulating Furnace (With Hot Heat Pump Operation)
THERMOSTAT | THERMOSTAT | |
|
| |
*PP32U70124 | *DN22H00124 | |
*DP22U70124 | ||
| ||
|
|
C | C | |
24 – Volt Common | 24 – Volt Common | |
|
| |
Y | Y1 | |
First Stage Compressor | First Stage Compressor | |
|
| |
R | R | |
24 – Volt Hot | ||
24 – Volt Hot | ||
(Heat XFMR) | ||
| ||
G | G | |
Fan | Fan | |
|
| |
E |
| |
Emergency Heat |
| |
|
| |
| W2 | |
| Second Stage Aux. Heat | |
|
| |
RC |
| |
24 – Volt Hot |
| |
(Cool XFMR) |
| |
O/B | O | |
Reversing Valve | ||
Reversing Valve | ||
Energized in Cool | ||
| ||
L | L | |
Malfunction Light | Malfunction Light | |
|
| |
Y2 | Y2 | |
Second Stage CompressorSecond Stage Compressor | ||
|
| |
AUX | E/W1 | |
Auxiliary Heat | First Stage Aux. Heat | |
|
| |
|
| |
3 | External Humidistat | |
(Optional) | ||
| ||
| Open on Humidity Rise | |
|
| |
Thermostat Installer Setup | Step 1 of Thermostat | |
Installer/Configuration | ||
must be set to 12 | Menu must be set to “HP2” | |
3 Heat/2 Heat Pump | Selection of GAS/ELEC | |
Thermostat Installer Setup | switch on thermostat | |
not necessary | ||
must be set to 0 |
| |
O/B terminal |
| |
Energized in Cooling |
| |
Thermostat Installer Setup |
| |
| ||
must be set to 1 |
| |
Heat Pump Backup Heat |
| |
Source is Fossil Fuel |
| |
Thermostat Installer Setup |
| |
| ||
Kit- must be set to 1 |
| |
Heat Pump Control |
| |
is Controlling Heat Pump |
| |
Backup Heat |
| |
ID MODELS
PC9
FC9C
FL9C
VARIABLE SPEED
MODULATING
FURNACE
VARIABLE SPEED | 2 | ||
MODULATING | |||
|
| ||
FURNACE CONTROL |
|
| |
C |
|
| |
24 – Volt Common |
|
| |
|
|
| |
Y1
Single Stage Compressor
R
24 – Volt Hot
G
Fan
W
Modulating Heat
Y/Y2
Second or Full
Stage Compressor
HUM
Dehumidification-
Open on Humidity Rise
Move HUMIDISTAT
jumper to “YES”
if humidistat is to be used.
Part Numbers: | 2 | |
SAP = Legacy | ||
| ||
171334 = |
|
Bonnet Sensor
(Optional)
OD MODELS
YZE
YZH
H*5
H*8
TWO STAGE
HEAT PUMP
YORKGUARD VI | 1 |
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 “ON”
Change Hot Heat Pump jumper on the heat pump control to “ON”
Part Numbers: | 1 | |
SAP = Legacy | ||
| ||
126768 = |
| |
18395 = |
| |
340512 = |
|
Thermostat Chart -
Unitary Products Group | 9 |
