Carrier 40VMA Series Installation And Maintenance Instructions Manual page 12

P
Q
To outdoor/indoor/MDC
units comm. bus
XT2
To wired controller
comm. bus
Occupancy sensor/ON-OFF
(Dry contact)
Display board
RED
WHITE
BLUE
BL K C A
LEGEND
NOTE: Field wiring must use copper conductors only
Auxiliary Control Board
ACB —
ALARM — Warning Lamp
Output for Auxiliary Heat
AUXH —
Condensate Switch
CS —
Output for Cooling Operation
CTON —
Electronic Expansion Valve
EEV —
Output for Fan Operation
FAN —
Indoor Fan Motor
FM —
Output for Heating Operation
HTON —
Pump Motor
PUMP —
T1/T0 Room Temperature Sensor
—
TA — Room Temperature Sensor
Inlet Pipe Temperature Sensor
T2A —
Outlet Pipe Temperature Sensor
T2B —
XP1-8 — Connectors
XS1-4 — Connector
Terminal Block
XT1-2 —
---------- Optional Component or Field Wiring
—
P
Q ACB interface
CN50
WHITE
BLUE
FAN CTON HTON AUXH
( Current range: 0-1A)
( Voltage range: 0-24V AC/DC)
" +5V GND +12V "
ONLY USED
FOR TESTING
CN14 CN12 CN11 CN5 CN52 CN54
SW8
CN2{L_IN}
EARTH
CN3 CN18
CN4{N_IN}
Y/G
ALARM
L1 L2
XT1
POWER IN
Fig. 17 —40VMA036-054 Typical Wiring Diagram
ON/OFF
SWITCH
CN51 CN51
CN24
CN20
PUMP SVD
12
FM
CN13