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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.
B6LC, B12LC - Recirculation Defrost - Normal Low Speed
Remote Electrical
Enclosure
Unocuppied
K5
Relay
Damper
K4
Relay
X1
F2
Recirculation
Relay
K3
UCB1
VE0470A
Appendix H
WIRING DIAGRAMS
!
SYSTEM DIAGRAM
POSITION SETTING
ITEM
A
B
C
JU1
D
E
F
G
Ventilation Fan Motors
(Exhaust)
M1
Low Speed
High Speed
Relay
K1
K2
3
2
1
6
5
4
9
8
7
10K Defrost
J1
Thermistor
(cont'd)
WARNING
ITEM
OFF
K1
K2
OFF
OFF
K3
ON
K4
K5
ON
ON
F1
ON
F2
X1
UCB1
(Supply)
M2
Main Electrical
Enclosure
Relay
F1
J3
JU1
J4
J2
23
DESCRIPTION
Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC
Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC
Relay DPDT 24 VAC, 1/2 HP, 15 A @ 120 VAC
Relay SPDT 120 VAC, 1 HP, 30 A @ 120 VAC
Fuse 5 A fast acting and fuse holder
Fuse 0.25 A fast acting and fuse holder
24 VAC Transformer 40 VA
Electronic Controller
Ref: 1107007_REV-A
From/To
J3-9
J3-8
BLACK
J3-6
J3-7
RED
3.9K
J3-8
J3-9
OCC.
J3-8
J3-8
UNOCC.
J3-9
J3-1
REM FAN
J3-2
INTERLOC
GREEN
YELLOW
LOW
COM
HIGH
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