5320779-UIM-A-0417
10
Johnson Controls Unitary Products
FIGURE 9:
Thermostat Chart - Single Stage AC with PSC Air Handler
A0164-002
AC 1B
Single Stage Air Conditioner
– PSC Air Handler
C
24 – Volt Common
Y
Compressor Contactor
SINGLE STAGE
AIR
CONDITIONER
ID MODELS
SINGLE STAGE
AIR CONDITIONER
COM
24 – Volt Common
R
24 – Volt Hot
W2
Second Stage Heat
O
Reversing Valve
Energized in Cool
X/L
Malfunction Light
HUM
Humidity Switch
Open on Humidity Rise
PSC
AIR HANDLER CONTROL
G
Fan
PSC
AIR HANDLER
EAC(24 VAC out)
Electronic Air Cleaner
HUM OUT
(24 VAC out)
Humidifier
Y1
Single Stage Compressor
Y/Y2
Second or Full
Stage Compressor
W1
First Stage Heat
Y
Full Stage Compressor
G
Fan
*BP11C50124
*BN11C01124
*DP11C40124
*DN11C00124
THERMOSTAT
RH
24 – Volt Hot
(Heat XFMR)
RC
24 – Volt Hot
(Cool XFMR)
W
Full Stage Heat
Selection of GAS/ELEC
switch on thermostat
is not necessary
C
24 – Volt Common
Y
Full Stage Compressor
G
Fan
*BN11C00124
THERMOSTAT
RH
24 – Volt Hot
(Heat XFMR)
RC
24 – Volt Hot
(Cool XFMR)
W
Full Stage Heat
Thermostat Installer Setup
1-System Type-must be
set to 0
C
24 – Volt Common
Thermostat Installer Setup
15-Compressor Protection
must be set to 5
24VAC
Electronic Air Cleaner
(Optional)
External Humidistat
(Optional)
Open on Humidity Rise
Move HUM STAT
jumper to “YES”
if humidistat is to be used.
Refer to AH documentation
for W1 and W2 electric
heat staging options.
24VAC Humidifier
Relay
(Optional)
MA
Relay
AHR