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To wired
controller
comm. bus
To outdoor/indoor/MDC
units comm. bus
P
Q
CN3
CN18
CN2
CN24
BLUE
RED
LINE
FILTER
FM
LOAD
BLUE
RED
Y/G
XT1
L1 L2
POWER IN
NOTE: Field wiring must use copper conductors only.
XT2
WHITE
BLUE
XP6
P
YELLOW
Q
GRAY
XP7
EARTH
" +5V GND +12V "
ONLY USED
FOR TESTING
CN54
Y/G
ALARM
Occupancy
ON/OFF
sensor/ON-OFF
PUMP
SWITCH
(Dry contact)
Fig. 23 —40VMM012A-048A Typical Wiring Diagram
No Beep Harness
XP7/XS7
CN17
CN9
CN15
CN52
CN14
CN4
ACB interface
CN50
FAN CTON HTON AUXH
(Voltage range: 0-24V AC/DC)
( Current range: 0-1A)
16
Display Board
XS4
XP4
ENC2
ON
ON
SW1
SW8
ENC1
CN5
CN21 CN12
CN8
Code
Title
Indoor fan motor
FM
Room temp. sensor
T1
Inlet Pipe temp. Sensor
T2A
Outlet Pipe temp. Sensor
T2B
CN51
Warning lamp
ALARM
EEV
Electronic expansion valve
XP1-7
Connectors
XS1-5
XT1-2
Terminal
Pump motor
PUMP
Water level switch
CS
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