368261-UIM-B-1008
14
Johnson Controls Unitary Products
FIGURE 20:
Thermostat Chart - Two Stage Air Conditioner – Variable Speed or PSC Modulating Furnace
C
24 – Volt Common
Y1
First Stage Compressor
Y2
Second Stage
Compressor
G
Fan
*PP32U70124
THERMOSTAT
AUX
Auxiliary Heat
R
24 – Volt Hot
(Heat XFMR)
R
24 – Volt Hot
(Cool XFMR)
C
24 – Volt Common
Y1
First Stage Compressor
Y2
Second Stage
Compressor
G
Fan
*DN22U00124
THERMOSTAT
W2
Second Stage Heat
R
24 – Volt Hot
(Heat XFMR)
R
24 – Volt Hot
(Cool XFMR)
E/W1
Emergency Heat
E/W1
First Stage Heat
TWO STAGE
AIR
CONDITIONER
C
24 – Volt Common
R
24 – Volt Hot
Y1
First Stage Compressor
Y2
Second Stage
Compressor
Connection of the “C”
terminal, 24-Volt common
is optional when used with
batteries
Thermostat Installer Setup
0170-System Type-must
be set to 8-2 Heat/2 Cool
Multistage Conventional
Connection of the “C”
terminal, 24-volt common
is optional when used with
batteries
Thermostat Installer Setup
1-System Type-must
be set to 6-2 Heat/2 Cool
Multistage Conventional
Thermostat Installer Setup
15-Compressor Protection
-must be set to 5
C
24 – Volt Common
R
24 – Volt Hot
Y1
Single
Stage Compressor
MODULATING
FURNACE CONTROL
G
Fan
MODULATING
FURNACE
Y/Y2
Second or Full
Stage Compressor
DHUM
Dehumidification-
Open on Humidity Rise
W
Modulating Heat
Part Numbers:
SAP = Legacy
1
1
Move HUMIDISTAT
jumper to “YES”
if humidistat is to be used.
ID MODELS
LO COMP
Single Stage
Compressor (OUT)
O
Reversing Valve
Energized in Cool
HI COMP
Second Stage
Compressor (OUT)
External Humidistat
(Optional)
Open on Humidity Rise
2
Part Number:
S1-2HU16700124
2
TM(8,L)M
YM(8,L)M
CM(8,L)M
LM(8,L)M
