835966-UIM-E-0814
16
Johnson Controls Unitary Products
FIGURE 16:
Thermostat Wiring – Two-Stage Heat Pump - Two-Stage Variable Speed Furnace
HP 24C
Two Stage Heat Pump – Two Stage Variable Speed Furnace (With Hot Heat Pump Operation)
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
TWO STAGE
HEAT PUMP
Bonnet Sensor
(Optional)
C
24 – Volt Common
R
24 – Volt Hot
Y1
Single Stage Compressor
TWO STAGE
VARIABLE SPEED
FURNACE CONTROL
G
Fan
TWO STAGE
VARIABLE SPEED
FURNACE
W/W1
First Stage Heat
Y/Y2
Second or Full
Stage Compressor
W2
Second Stage Heat
O
Reversing Valve
X/L
Malfunction Light
DHUM
Dehumidification
ID MODELS
YORKGUARD VI
CONTROL
OD MODELS
YZH
H*8B
C
24 – Volt Common
R
24 – Volt Hot
Y1
First Stage Compressor
Y2
Second Stage Compressor
G
Fan
THERMOSTAT
C
24 – Volt Common
Y
First Stage Compressor
O/B
Reversing Valve
L
Malfunction Light
Y2
Second Stage Compressor
G
Fan
*PP32U70124
THERMOSTAT
E
Emergency Heat
R
24 – Volt Hot
(Heat XFMR)
RC
24 – Volt Hot
(Cool XFMR)
AUX
Auxiliary Heat
Thermostat Installer Setup
0170-System Type-
must be set to 12
3 Heat/2 Heat Pump
Thermostat Installer Setup
0190-Changeover Valve-
must be set to 0
O/B terminal
Energized in Cooling
Thermostat Installer Setup
0200-Backup Heat Source-
must be set to 1
Heat Pump Backup Heat
Source is Fossil Fuel
External Humidistat
(Optional)
Open on Humidity Rise
Thermostat Installer Setup
0210-External Fossil Fuel
Kit- must be set to 1
Heat Pump Control
is Controlling Heat Pump
Backup Heat
S1-THPU32HP7b
A012-001
W3/AUX
Auxiliary Output
W1/O/B
First Stage Heat
W2
Second Stage
Heat
Jumper 1 must be
set to “Gas”
Jumper 2 must be
set to “O”
Jumper 3 must be
set to “HP”
Can use “W3/Aux”
output to control
dehumidification
if desired
Duel Fuel setting
must be “External”
Change “FFuel” jumper
on the heat pump control
to “ON”
Change Hot Heat Pump
jumper on the heat pump
control to “ON”
Move HEAT PUMP
jumper to “YES”
Move DHUM
jumper to “YES”
if humidistat is to be used.
TM8V
TM9V
YZF060
H*6B60