Brown
1
Orange
2
3
4
5
6
7
8
9
ACCESSORY
HEAT PLUG
ECONOMIZER
PLUG
1
Gray
2
3
Yellow
4
Blue
5
6
7
8
9
Typical Wiring (Field Supplied) for 1-Stage Cool, 1-Stage Heat
Brown
1
Orange
2
3
4
5
6
7
8
9
ACCESSORY
HEAT PLUG
ECONOMIZER
PLUG
1
Gray
2
3
Yellow
4
Blue
5
6
7
8
9
Typical Wiring (Field Supplied) for 2-Stage Cool, 2-Stage Heat with an
Figure 8. Typical Air Conditioner Thermostat Connections
W
G
C
Y
R
INDOOR
THERMOSTAT
SUB-BASE
Optional
Outdoor Thermostat
(Field Supplied)
W2
W1
G
C
Y2
Y1
R
INDOOR
THERMOSTAT
SUB-BASE
Optional Outdoor Thermostat
FROM
BLOWER RELAY
Green
FROM
CONTACTOR
Black
(Optional,
Check
Thermostat
Instructions)
FROM
TRANSFORMER
Red
FROM
BLOWER RELAY
Green
FROM
CONTACTOR
Black
(Optional, Check
Thermostat Instructions)
FROM
TRANSFORMER
Red
11