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Electric auxiliary heating wiring diagram
25KW HEAT KIT
: thermal cut-out
: thermal link, self-resetting
0
0
RELAY5
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
RED
BLACK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RELAY4
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
RED
BLACK
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RELAY3
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
BLACK
0
0
0
0
0
0
0
0
RELAY1
1
1
1
1
1
1
1
1
Aux-Heat
RED
BLACK
BLACK
control signal
24V～
BLUE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
RED
RELAY2
BLACK
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TO I N D OOR U NI T
MA IN B OA R D
CN 12
TO I N D OOR U NI T
MA IN B OA R D
3
CN 11
1(L1) 2(L2)
POWER A
NOTE1
:
This symbol indicates the element is
optional, The wiring type of the actual
unit shall prevail.
Round hole number
Round hole number
Relay number
Relay number
RELAY 1
RELAY 1
RELAY 2
RELAY 2
RELAY 3
RELAY 4
RELAY 5
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RED
TC O5
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
TL 5
BLACK
4
2 2 2 2 2 2 2 2 2 2 2 2 2 2 2
4
RED
TC O4
8
6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
TL 4
BLACK
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
RED
TC O3
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
TL 3
BLACK
4
4
4
4
4
4
2 2 2 2 2 2 2 2
RED
RED
TL 1
BLACK
8 8 8 8 8 8 8 8 8 8 8 8 8 8 8 8
6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6
RED
TC O1
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
TL 2
BLACK
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
8
RED
TC O2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
RED
RED
CB3
CB
CB
L2
L1
(green)
3(S)
L2
Y/G
L1
Y/G
POWER B
NOTE2:
Please attach the nameplate to the cover of
the electric control box. All the round holes
located on the plate represent numbers. Please
refer to the Installation Manual for details.
Circuit breaker number
The wiring mode of power supply A shall be based on the type of original
wiring terminal of AHU; for type A, S position must be connected to the
CB1
ourdoor S; for type B, S position shall not be connected.
CB2
1(L1) 2(L2)
CB3
HTR5
BLACK
RED
HTR4
BLACK
HTR3
BLACK
HTR1
HTR2
BLACK
BLACK
CB2
CB
CB
L1
L2
L1
L2
Y/G
POWER C
NOTE3: TO BE WIRED IN ACCORDANCE
WITH NEC AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT
POWERS.
3(S)
Y/G
L1
L2
TYPE A
TYPE B
CB1
CB
CB
L1
L2
L2
L1
Y/G
POWER D
Y/G
Page 27
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