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Electric Auxiliary Heating Wiring Diagram
3KW/5KW HEAT KIT
:thermal cut-out
:thermal link, self-resetting
Aux-Heat
control signal
RED
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
TO INDOOR UNIT
RELAY1
MAINBOARD
BLACK
cn12
1 1 1 1 1 1 1
24V～
TO INDOOR UNIT
MAINBOARD
cn11
3
1(L1) 2(L2)
POWER A
NOTE1:
This symbol indicates the element is
optional, The wiring type of the actual
unit shall prevail.
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.
Round hole number Relay number
Round hole number
Circuit breaker number
RELAY 1
CB1
15KW HEAT KIT
:thermal cut-out
:thermal link, self-resetting
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
6
6
6
6
6
6
6
6
RELAY4
1 1 1 1 1 1 1
2
2
2
2
2
2
2
2
B L A C K
0
0
0
RELAY1
6
6
6
6
6
6
6
6
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
Aux-Heat
R E D
B L A C K
B L A C K
control signal
B L U E
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T O I N DO O R
R E D
RELAY2
6
6
6
6
6
6
6
6
U N I T MA I N
B L A C K
B O A R D
C N 1 2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
24V～
2
2
2
2
2
2
2
2
T O I N DO O R U N I T
M A I N B O A R D
C N 1 1
3
(green)
1(L1) 2(L2)
3(S)
Y/G
POWER A
NOTE1:
This symbol indicates the element is optional,
The wiring type of the actualunit shall prevail.
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.
Round hole number Relay number
Round hole number
Circuit breaker number
CB1
RELAY 1
RELAY 1
RELAY 2
RELAY 2
CB2
RELAY 4
HTR1
R E D
T C O1
6
6
6
6
6
6
6
6
8
8
8
8
8
8
T L 1
B L A C K
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
BLACK
R E D
C B 1
CB
CB
L1
L2
(green)
3(S)
Y/G
L1
L2
Y/G
POWER B
NOTE3: TO BE WIRED IN ACCORDANCE WITH NEC
AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT POWERS.
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 ourdoor S; for type B, S position shall not
be connected.
Y/G
1(L1) 2(L2)
3(S)
Y/G
L1
L2
TYPE A
TYPE B
HTR3
R E D
T C O3
8
8
8
8
8
8
T L 3
B L A C K
4
4
4
4
4
4
4
4
T L 1
BLACK
8
8
8
8
8
8
8
HTR1
RED
T C O1
4
4
4
4
4
4
4
4
T L 2
BLACK
8
8
8
8
8
8
8
HTR2
RED
T C O2
4
4
4
4
4
4
4
4
R E D
B L A C K
R E D
B L A C K
R E D
CB2
CB1
CB
CB
CB
L1
L2
L1
L1
L1
L2
Y/G
Y/G
POWER B
POWER C
NOTE3: TO BE WIRED IN ACCORDANCE WITH NEC
AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT POWERS.
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 ourdoor S; for type B, S position shall not
be connected.
Y/G
1(L1) 2(L2)
3(S)
L1
L2
Y/G
TYPE A
TYPE B
8KW/10KW HEAT KIT
:thermal cut-out
:thermal link, self-resetting
0
0
0
0
RELAY1
1
1
1
RED
BLACK
Aux-Heat
control signal
RED
0
0
0
0
0
0
0
0
TO I ND OO R
UN IT M AI N
RELAY2
BLACK
BO AR D CN 12
1
1
1
1
1
1
1
24V～
T O I ND OO R UNI T
M A IN BO ARD
3
C N 11
1(L1) 2(L2)
NOTE1:
This symbol indicates the element is
optional, The wiring type of the actual
unit shall prevail.
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.
Round hole number Relay number
Round hole number
Circuit breaker number
RELAY 1
RELAY 1
RELAY 2
RELAY 2
20KW HEAT KIT
:thermal cut-out
:thermal link, self-resetting
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
0
0
0
0
0
0
0
RELAY1
1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
Aux-Heat
RED
BLACK
BLACK
control signal
BLUE
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
T O I N D O O R
RED
RELAY2
U N I T M A I N
BLACK
B L A C K
B O A R D
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
24V～
C N 1 2
T O I N D O O R UN I T
CB
M A I N B O A R D
3
L2
C N 1 1
L2
1(L1) 2(L2)
POWER A
NOTE1:
This symbol indicates the element is optional,
The wiring type of the actual unit shall prevail.
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.
Round hole number Relay number
Round hole number
Circuit breaker number
RELAY 1
RELAY 1
RELAY 2
RELAY 2
RELAY 3
RELAY 4
Page 3 0
TL 1
BLACK
6
6
6
6
6
6
6
6
8
8
8
8
8
8
8
8
HTR1
RED
T C O1
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
TL 2
BLACK
8
8
8
8
8
8
8
8
6
6
6
6
6
6
6
6
HTR2
RED
T C O2
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
BLACK
RED
RED
BLACK
C B 1
CB
CB
(green)
L1
L2
3(S)
Y/G
L2
L1
Y/G
POWER A
POWER B
NOTE3: TO BE WIRED IN ACCORDANCE WITH NEC
AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT POWERS.
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 ourdoor S; for type B, S position shall not
be connected.
CB1
1(L1) 2(L2)
3(S)
Y/G
L1
TYPE A
HTR4
RED
T C O4
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
T L 4
BLACK
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
HTR3
RED
T C 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
T L 3
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
2
T L 1
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
HTR1
RED
T C O1
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
T L 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
HTR2
RED
T C O2
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
RED
BLACK
RED
BLACK
CB2
CB
CB
(green)
L1
L2
3(S)
Y/G
L1
L2
Y/G
Y/G
POWER B
NOTE3: TO BE WIRED IN ACCORDANCE WITH NEC
AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT POWERS.
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 ourdoor S; for type B, S position shall not be
CB1
connected.
CB2
1(L1) 2(L2)
3(S)
Y/G
L1
TYPE A
TYPE B
Y/G
L2
TYPE B
BLACK
BLACK
RED
RED
CB1
CB
CB
L1
L2
L1
L2
POWER C
Y/G
L2
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