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

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 "ELEC"
FIGURE 10: Thermostat Wiring – Single Stage Air Conditioner (with AC control) – VS Air Handler
Johnson Controls Unitary Products
Single Stage Air Conditioner (with AC control) -
Relay
(Optional)
24VAC
Electronic Air Cleaner
Relay
(Optional)
ID MODELS
AHV
MV
VARIABLE
SPEED
AIR HANDLER
VARIABLE SPEED
AIR HANDLER
CONTROL
COM
24 – Volt Common
Y/Y2
Second or Full
Stage Compressor
R
24 – Volt Hot
G
Fan
W1
First Stage Heat
W2
Second Stage Heat
Y1
First
Stage Compressor
O
Reversing Valve
Energized in Cool
X/L
Malfunction Light
HUM
Humidity Switch
Open on Humidity Rise
HUM OUT
(24 VAC out)
EAC
(24 VAC out)
Electronic Air Cleaner
Move the HUM STAT
jumper to "YES"
if humidistat is to be
used.
Refer to AH
documentation
for W1 and W2 electric
heat staging options.
V/S Air Handler
SINGLE STAGE
AIR
CONDITIONER
SINGLE STAGE
AIR CONDITIONER
C
24 – Volt Common
Y1
First Stage Compressor
R
24 – Volt Hot
Y2
Second Stage
Compressor
A0208-002
835965-UIM-C-0814
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