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15
LEGEND
NOTE: Field wiring must use copper conductors only.
ACB
—
Auxiliary Control Board
ALARM —
Warning Lamp
AUXH
—
Output For Auxiliary Heat
CS
—
Condensate Switch
CTON
—
Output for Cooling Operation
EEV
—
Electronic Expansion Valve
FAN
—
DC Indoor Fan
FM
—
Indoor Fan Motor
HTON
—
Output For Heating Operation
PUMP
—
Pump Motor
T1
—
Room Temperature Sensor
T2A
—
Inlet Pipe Temperature Sensor
T2B
—
Outlet Pipe Temperature Sensor
XP1-4,
—
Connectors
XS1-4
XT1-2
—
Terminal Block
----------
Optional Component or Field Wiring
Fig. 22 — 40VMM007-009 Typical Wiring Diagram
EEV
AH
BH
FM
ALARM
PUMP
CN24
CN2
N3 CN1
C
8
EARTH
Y/G
CN15
CN9
CN17
Y/G
L1 L2
controller
To wired
comm. bus
To outdoor/indoor/MDC
units comm. bus
CN51
CN50
ACB interface
( Current range: 0-1A)
(Voltage range: 0-24V AC/DC)
FAN CTON HTON AUXH
XP4 XS4
Display Board
RED
BLUE
YELLOW
GRAY
WHITE
BLUE
ON/OFF
SWITCH
Main Board
CS
POWER IN
XT1
XT2
CN14
CN21
CN12
CN4
CN5
CN54
CN52
CN8
P
Q
P
Q
SW1 SW8
ENC2
ON
ON
ENC1
Occupancy
sensor/ON-OFF
(Dry contact)
“ +5V GND +12V ”
ONLY USED
FOR TESTING
T2A
T2B
T1
XS3
XP3
XS1
XP1
XS2
XP2
RED
WHITE
BLUE