MITS U Series - Unico EC Air Handler Wiring Diagram

SIMPLIFIED LOW VOLTAGE WIRING DIAGRAM
“U” SERIES WITH UNICO EC AIR HANDLER
™
B
B
B
B
C
CC
C
C
C
C
C
R
R
R
R
R R D
AFS AFS
R
W
WW
W
W2 S3
E
W
Y
Y
Y
Y
Y2
Y2Y1 Y1
Y
G
GG
G
G
THERMOSTATTHERMOSTAT
UNICO EC SMART CONTROL BOARD
FURNACE
B B
OUTDOOR UNIT THERMOSTAT
OUTDOOR UNITOUTDOOR UNIT
TO ANTI FROST STATS
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“B”
for the reversing valve.
3. Push reset button after
changing switch to4-2
“ON” and power has been
restored. .
Interface Module H1280-E922
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
“ON”. Restore power and push reset