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• Risk of electric shocks. Before performing any maintenance or servicing, always disconnect the unit from its power source.
• This product is equipped with an overload protection (fuse). A blown fuse indicates an overload or a short-circuit situation.
If the fuse blows, disconnect the unit from its power source. Discontinue using the unit and contact technical support.
Ventilation Fan Motors
(Exhaust)
M1
Low Speed
Relay
K1
UCB1
VE0468A
WIRING DIAGRAMS
B6LC, B12LC - Exhaust Defrost - Normal Low Speed
SYSTEM DIAGRAM
(Supply)
M2
High Speed
Relay
K2
3
2
1
6
5
4
9
8
7
J1
POSITION SETTING
ITEM
A
OFF
B
OFF
C
OFF
JU1
D
ON
E
ON
F
ON
G
ON
Appendix H
!
WARNING
Main Electrical Enclosure
Defrost
Relay
K3
J3
JU1
10K Defrost
Thermistor
J4
J2
ITEM
DESCRIPTION
K1
Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC
K2
Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC
K3
Fuse 5 A fast acting and fuse holder
F1
UCB1
Electronic Controller
21
Ref: 1107006_REV-A
From/To
J3-9
BLACK
J3-7
RED
J3-8
F1
J3-9
OCC.
J3-8
UNOCC.
J3-1
REM FAN
J3-2
INTERLOC
J3-8
GREEN
J3-6
YELLOW
3.9K
LOW
J3-8
COM
J3-9
HIGH
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