MITS U Series - Low Ambient Switch Over Wiring Diagram

B
B
B
C
CC
C
C
R
R
R
R
R
W
WW
W
W
Y
Y
Y
Y
Y
G
GG
G
G
THERMOSTATTHERMOSTAT
THERMOSTAT
FURNACE
FURNACE
B CR
Y2
OUTDOOR UNIT
OUTDOOR UNIT
SIMPLIFIED LOW VOLTAGE WIRING DIAGRAM MITS AIR “U”
SERIES ADD-ON HEAT PUMP LOW SWITCH OVERWITH AMBIENT
™
MODELS
MOX330U-18HFN1-MR0
MOX430U-24HFN1-MR0
MOD30U-30HFN1-MR0
MOD30U-36HFN1-MR0
MOE30U-48HFN1-MR0
MOE30U-60HFN1-MR0
Notes:
1. is aThermostat heat pump
type.
2. configuration is used for the“B”
reversing valve.
3. Set thermostAMBIENT
at to
temperature below which only
S1 B
C
S2
R
W
Y2
D
L
Y
O N
1
O N
1
O N
1
O N
1
SW4-1 OFF
SW4-2 ON
SW4-3 OFF
SW4-4 OFF
Switch 4
OUTDOOR UNIT INTERFACE BLOCK
DIP SWITCH 4-2
MUST BE SET
TO “ON”
RESET SWITCH
When resetting switch 4-2, turn off
power to outdoor unit, set switch 4-2 to
FIELD SUPPLIED
THERMOSTAT
AND RELAY
H1289-E922 INTERFACE MODULE