Ameristar M4AC6 - Low Voltage Wiring Diagrams

88-M4PW003-1B-EN 11
11.2 Low Voltage Hook-up Diagrams
With M4AC6
• Units with pigtails require wirenuts for connections. Cap all unused wires.
•
In AC systems for multiple stages of electric heat, jumper W1 and W2 together if comfort control has only one stage of heat.
** When using a BK enabled comfort control, cut BK jumper and bypass Y1 and Y2 at the air handle
r. Connect BK from comfort control to BK of
the air handler
Thermostat Air Handler
Outdoor
Unit
R
G
B
W1
W2
B
Y
R
G
B/C
Y
W1
W2
Blue
24 VAC HOT
FAN
24 VAC
Common
SOV
COOL/HEAT
1st STAGE
HEATING
2nd STAGE
EMERGENCY
HEAT
Pink
White
O
Y1
Y2
*
BK
WH/BLK
BK
WH/BLK
**
With Furnace With Variable Speed Furnace
• Units with pigtails require wirenuts for connections. Cap all unused wires.
•
In AC systems for multiple stages of heat, jumper W1 and W2 together if comfort control has only one stage of heat.
* If equipped with second stage heat
** When using a BK enabled comfort control, cut BK jumper and bypass Y and YLo at the furnace. Connect BK from comfort control
to
BK of the furnace
Thermostat Furnace Furnace
Outdoor
Unit
R
G
B
W1
W2
B
Y
R
G
B/C
W1
W2
24 VAC HOT
FAN
24 VAC
Common
COOL
HEATING
YY1
YY
Y
LO
Thermostat
Outdoor
Unit
R
G
B
W1
W2
B
R
G
B/C
Y1
W1
W2
24 VAC HOT
FAN
24 VAC
Common
COOL
HEATING
O
BK
BK
**
**
**