Carrier 40VML007-024, Installation And Maintenance Instructions Manual

Page: 11 / 20

11
WIRING DIAGRAM
NOTE: Field wiring must use copper conductors only.
Fig. 17 —40VML007-024 Typical Wiring Diagram
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 — Output for Fan Operation
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
EEV
FM
ALARM
PUMP
CN24
N3 CN1 C 8
CN2
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
ON ON
ENC2
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
HA HB
XP7/XS7
No Beep Harness