Carrier 40VMM Series Installation And Maintenance Instructions Manual page 15

LEGEND
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
NOTE: Field wiring must use copper conductors only.
XT2
To wired
controller
comm. bus
P
YELLOW
To outdoor/indoor/MDC
Q
units comm. bus
P
Q GRAY
EARTH
" +5V GND +12V "
C N3 CN1 8
ONLY USED
FOR TESTING
CN2
CN54
CN24
XP1
RED BLUE
XS1
Y/G
FM
ALARM
Y/G
XT1
L1 L2
Occupancy
sensor/ON-OFF
ON/OFF
PUMP
SWITCH
(Dry contact)
POWER IN
Fig. 22 — 40VMM007-009 Typical Wiring Diagram
WHITE
BLUE
XP4 XS4
Display Board
CN17 CN9 CN15
ON
SW1 SW8
Main Board
CN52 CN21 CN12
CN14
CN4
XP2 XP3
XS3
XS2
EEV CS
ACB interface
CN50
CN51
FAN CTON HTON AUXH
(Voltage range: 0-24V AC/DC)
( Current range: 0-1A)
15
ENC2
ON
ENC1
CN5
CN8