Carrier 38MURAQ30AA3 - Page 17

38MURA: Installation Instructions
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
17
Fig. 28 —Wiring for 4H and 2C Thermostat
Fig. 29 —Wiring for 3H and 1C Thermostat
Fig. 30 —Wiring for 3H and 2C Thermostat
Fig. 31 —Wiring for 3H and 2C Thermostat
Fig. 32 —Wiring for 2H and 2C Thermostat
Fig. 33 —Wiring for 2H and 1C Thermostat
Fig. 34 —Wiring for 1H and 1C Thermostat
R L G B W E
C
Y1
DH
W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
OUTDOO R UNIT
DH
O/B
W2
Y2
Y1
G
L
C
R
W1/E
THERMOSTAT
Y
/
Y2
R L G B W E
C
Y1
DH W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
DH
OUTDOOR UNIT
O/B
W2
Y
G
L
C
R
W1/E
THERMOSTAT
Y
/
Y2
R L G B W E
C
Y1
DH
W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
DH
O/B
Y2
Y1
G
L
C
R
E
THERMOSTAT
OUTDOOR UNIT
Y
/
Y2
R L G B W E
C
Y1
DH
W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
DH
O/B
Y2
Y1
G
L
C
R
W1/E
THERMOSTAT
OUTDOOR UNIT
Y
/
Y2
R L G B W E
C
Y1
DH
W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
OUTDOOR UNIT
O/B
Y2
Y1
G
C
R
THERMOSTAT
Y
/
Y2
R L G B W E
C
Y1
DH
W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
OUTDOOR UNIT
O/B
Y
G
C
R
W/E
THERMOSTAT
Y
/
Y2
R L G B W E
C
Y1
DH W1 W2
R B W D L
C
Y1
Y2
INDOOR UNIT
OUTDOOR UNIT
O/B
Y
G
C
R
T
HERMOSTAT
Y
/
Y2
S4-1:
Default ON: For single stage supplemental heat, W1
and W2 are connected.
OFF: For dual stage supplemental heat, W1 and W2
are controlled independently. feature is enabled
through thermostat.
S4-2:
Default ON: Dehumidification control not available.
OFF: Dehumidification feature is enabled through
thermostat.
Note: Dip switches are located on a compatible indoor unit. Refer to the indoor unit
installation manual for additional information. A heat pump thermostat is
required for all above thermostat configurations.