Carrier 40VMH024 - Page 15

15
Fig. 20 —40VMH072 - 096 Typical Wiring Diagram
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 — Output for Fan Operation
FM — Indoor Fan Motor
HTON — Output for Heating Operation
PUMP — Pump Motor
SVD — Solenoid Valve
T1/T0 — Room Temperature Sensor
T2A — Inlet Pipe Temperature Sensor
T2B — Outlet Pipe Temperature Sensor
XP1-8 — Connectors
XS1-4 — Connector
XT1-2 — Terminal Block
---------- Optional Component or Field Wiring
SW8
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
CN3 CN18
CN24
CN11 CN5 CN52
CN54
CN12
CN15
CN9 CN26
CN8
EARTH
7%
ELUEB
7$
WHITE
77
RED
Display board
To wired controller
comm. bus
$+
%+
LUEB
WHITE
CN51
CN50
CN51
ACB interface
FAN
CTON HTON
AUXH
ON/OFF
SWITCH
PUMP
((9
&6
FM
3;
;3
;3
;3
;3
;3
6;
;6
;6
;6
XT2
( Current range: 0-1A)
(
Voltage range: 0-24V AC/DC )
(1&
)$1$
To outdoor/indoor/MDC
units comm. bus
(1&
CN14
Occupancy sensor/ON-OFF
(Dry contact)
P
Q
P
Q
ALARM
POWER IN
LACKB
RED
XT1
L1 L2
G/Y
CN2{L_IN}
CN4{N_IN}
CN6
ACKLB
CN20
SVD
7$
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JXO\KHUGXJ
CN13
CN3
“ +5V GND +12V ”
ONLY USED
FOR TESTING
CN27
CN57+
CN58-
CN29
*)SUZUX
JXO\KHUGXJ
CN13
CN3
RED
BLACK
BLUE
BLUE
RED
BLACK
BLUE
BLUE
~
~
+
-
FM
)$1%
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