Connection Diagrams - Bryant 38MURA Manual

38MURA: Product Data
24V CONNECTION DIAGRAMS
Table 1 — Terminal Function
R
C
Y1
Y2
B
W
D
L System Fault - (24V output signal)
NOTE: Terminal D will be energized when the outdoor unit
goes into defrost mode and can be used to enable
electric heat. This feature is not available when the
outdoor unit communicates with the indoor unit via
non-polarity RS485 Communication S1-S2.
W2
W1/E
O/B
Y2
Y1
G
L
C
R
DH
THERMOSTAT
Y/
DH R C L G Y1
Y2
INDOOR UNIT
Fig. 7 —Wiring for 4H and 2C Thermostat
W2
W1/E
O/B
Y
G
L
C
R
DH
THERMOSTAT
Y/
R C L G
DH Y1
Y2
INDOOR UNIT
Fig. 8 —Wiring for 3H and 1C Thermostat
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.
Note: Dip switches are located on compatible indoor unit.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
24V Power Connection
Common
Low Demand
High Demand
Heating Reversing Valve
Heating Control
Defrost - (24V output signal)
C Y1 Y2
B W W1 W2 E R B W D
OU TDOOR UNIT
B W E R C Y1 Y2 B W D
W1 W2
OUTDOOR UNIT
Refer to the indoor unit installation manual for additional information.
E
O/B
Y2
Y1
G
L
C
R
DH
THERMOSTAT
DH R C
Fig. 9 —Wiring for 3H and 2C Thermostat
W1/E
O/B
Y2
Y1
G
L
C
R
DH
THERMOSTAT
DH R C
Fig. 10 —Wiring for 3H and 2C Thermostat
O/B
Y2
Y1
G
C
L
R
THERMOSTAT
DH R C
Fig. 11 —Wiring for 2H and 2C Thermostat
W/E
O/B
Y
G
C
R
THERMOSTAT
L
DH R C
S4-2:
Default ON: Dehumidification control not available.
OFF: Dehumidification feature is enabled through
thermostat.
87
Y/
L G B W W1 W2 E R C Y1 Y2
Y1
Y2
INDOOR UNIT
OUTDOOR UNIT
Y/
C Y1 Y2
L G Y1 B W W1 W2 E R
Y2
INDOOR UNIT
Y/
C Y1 Y2
L G Y1 B W W1 W2 E R
Y2
INDOOR UNIT
OUTDOOR UNIT
Y/
Y1 R C Y1 Y2
L G B W W1 W2 E
Y2
INDOOR UNIT
OUTDOOR UNIT
B W D L
B W D L
OUTDOOR UNIT
B W D L
B W D L