Thermostat Wiring - Single Stage Air Conditioner (With Ac Control) - Modulating Furnace - York CZH Installation Manual

835965-UIM-C-0814
Single Stage Air Conditioner (with AC control)
THERMOSTAT
S1-THSU21P1b
C
24 – Volt Common
Y1
First Stage
Compressor
R
24 – Volt Hot
G
Fan
W2
Second Stage Heat
W1/O/B
First Stage Heat
External Humidistat
(Optional)
Open on Humidity Rise
Jumper 1 must be set
to "GAS/ELEC"
Jumper 3 must be set
to "GAS"
FIGURE 11: Thermostat Wiring – Single Stage Air Conditioner (with AC control) – Modulating Furnace
10
– Modulating Furnace
ID MODELS
(Y,L,C)*9C
T*9C
T*(8,L)C
(Y,L,C)*(8,L)C
MODULATING
FURNACE
MODULATING
FURNACE CONTROL
C
24 – Volt Common
Y1
First Stage Compressor
R
24 – Volt Hot
G
Fan
W
Modulating Heat
Y/Y2
Second or Full
Stage Compressor
O
Reversing Valve
Energized in Cool
LO COMP
Single Stage
Compressor (OUT)
HI COMP
Second Stage
Compressor (OUT)
DHUM
Dehumidification-
Open on Humidity Rise
HEATPUMP jumper must
be set to "NO"
Move HUMIDISTAT
jumper to "YES"
if humidistat is to be used.
SINGLE STAGE
AIR
CONDITIONER
SINGLE STAGE
AIR CONDITIONER
C
24 – Volt Common
Y1
First Stage Compressor
R
24 – Volt Hot
Y2
Second Stage
Compressor
A0209-002
Johnson Controls Unitary Products