28
Appendix H
(cont’d)
WIRING DIAGRAMS
M1
M2
J1
J2
J3
J4
JU1
K1
K2
K3
F1
F2
X1
ITEM
DESCRIPTION
UCB1
TB1
SYSTEM DIAGRAM
7000 - Recirculation Defrost
Relay DPST 120 VAC, 1 HP, 30 A @ 120 VAC
Relay DPDT 24 VAC, 1/2 HP, 15 A @ 120 VAC
Fuse 5 A fast acting and fuse holder
Fuse 0.5 A fast acting and fuse holder
24 VAC Transformer 40 VA
Electronic Controller
ITEM
C
JU1
OFF
B
OFF
A
ON
D
ON
E
ON
F
ON
G
ON
POSITION SETTING
Line Voltage Terminal Block (120 VAC)
K1
K2
K
3
TB1
F1
F2
X1
UCB1
(Exhaust)
Ventilation Fan Motors
(Supply)
sto
p
High Speed
Relay
Low Speed
Relay
Recirculation
Relay
10K Defrost
Thermistor
9
8
7
6
5
4
3
2
1
FF
I
O
C
O
L
Y
R
G
B
1
2
3
4
5
6
9
7
8
Main Electrical
Enclosure
Ref: 1107008_REV-A
From/To
J3-9
J3-1
J3-8
J3-9
J3-6
J3-7
J3-8
J3-8
J3-2
J3-8
J3-9
GREEN
YELLOW
LOW
COM
HIGH
BLACK
RED
OCC.
UNOCC.
REM FAN
INTERLOC
3.9K
VE0464A
WARNING
• 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.
!
