Bulletin 30-034.009
Page 15
Copyright © 2022 Unico Inc.
Figure 18. Internal Wiring Diagram for WON0752-C and WON1002-C. (Single phase)
FAN
DEFROST HEAT
STEP 1
COMMON
CONTACTOR
ELEMENT #1
CONTROL
TERMINAL BLOCK
GRN
BRN
RED
ORG
ORG
BRN
BRN
ORG
FAN INTERLOCK RELAY
ORG
ORG
Control Wiring
Power Wiring
EL00102c.cvx
RED
RED
ELEMENT #2
ORG
BLK
STEP 2
BLK
*L 165
*L 165
CIRCUIT BREAKERS
L1
L2
G
GROUND LUG
FUSE LINK
FUSE LINK
To Blower
15 A.
A.
WON0752-C - 40 A. Circuit Breaker
WON1002-C - 50 A. Circuit Breaker
*
*
POWER
SUPPLY
240V
RECTIFIER
5 SEC.
DELAY ON
INTERLOCK/TIME DELAY
CONTACTOR
CAUTION
Relays and contactors utilize 22VDC coils
with AC to DC rectifier. Do not use relay with-
out rectifier.
Replace with factory authorized parts only.
NC
NO
AIR PRESSURE SWITCH
Jumper bar
(remove if motor
is wired separately)
HEATER
BLOWER
F
D S1 S2 C G L1 L2/N
CONDUIT
SINGLE CIRCUIT WITH MOTOR
GRN/YEL
RED
BLK
24VAC
240VAC
RECTIFIER
5 SEC.
DELAY ON
CONTACTOR
RECTIFIER
9 SEC.
DELAY ON
Internal
Field
Wiring Legend
RECTIFIER
5 SEC.
DELAY ON
