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AC 26C
Two Stage Air Conditioner – Variable Speed Modulating Furnace
THERMOSTAT
*PP32U71124
*PP32U72124
C
24 – Volt Common
Y1
First Stage Compressor
R
24 – Volt Hot
G
Fan
E/W1
First Stage Heat
W2
Second Stage Heat
L
Malfunction Light
Y2
Second Stage
Compressor
DHM
Dehumidification
HM
Humidistat
Step 1 of Thermostat User
Configuration Menu must
be set to MLTISTG
Step 16 of Thermostat
Installer Table Menu
must be set to ON to use
Comfort Alert Features
Only applies to
*PP32U72124
E2/P Switch must be in the
E2 position
Thermostat Chart -
Unitary Products Group
PC9
FC9C
FL9C
VARIABLE SPEED
MODULATING
VARIABLE SPEED
FURNACE CONTROL
24 – Volt Common
Single Stage Compressor
Stage Compressor
Dehumidification-
Open on Humidity Rise
24VAC Humidifer
(Optional)
Move HUMIDISTAT
if humidistat is to be used.
SAP =
171334 = 031-09153
Optional Harness
ID MODELS
FURNACE
1
MODULATING
C
Y1
R
24 – Volt Hot
G
Fan
W
Modulating Heat
Y/Y2
Second or Full
HUM
jumper to "YES"
Part Numbers:
1
Legacy
246815-YTG-D-0108
TWO STAGE
AIR
CONDITIONER
C
24 – Volt Common
Y1
First Stage Compressor
R
24 – Volt Hot
Comfort Alert Interface
(two pin connector)
Y2
Second Stage
Compressor
7
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