7
Electric auxiliary heating wiring diagram
: thermal cut-out
: thermal link, self-resetting
25KW HEAT KIT
Round hole number Relay number
RELAY 1
RELAY 2
Relay number
RELAY 1
RELAY 2
CB3
Round hole number
RELAY 3
CB2
RELAY 4
RELAY 5
CB1
3(S)
1(L1) 2(L2)
TYPE A
L1 L2
TYPE B
Y/G
Circuit breaker number
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.
NOTE1
:
This symbol indicates the element is
optional, The wiring type of the actual
unit shall prevail.
NOTE3: TO BE WIRED IN ACCORDANCE
WITH NEC AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT
POWERS.
Y/G
3(S)
RE
D
1(L1) 2(L2)
YELLOW
BLAC
K
3
RED
BLACK
BLACK
BLACK
BLACK
RELAY5
0
4
0
4
BLACK
BLACK
BLACK
RED
RED
RED
RED
RED
RED
BLACK
BLUE
RED
RELAY3
RELAY4
RELAY2
RELAY1
Aux-Heat
control signal
0
1
2
4
0
1
2
4
0
1
2
4
0
1
2
4
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
0
1
2
4
0
1
2
4
0
1
2
4
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
1
2
4
6
8
0
2
4
8
0
2
4
8
0
2
4
8
0
2
4
8
0
1
4
0
1
4
0
1
4
0
1
4
0
1
4
0
1
4
0
1
0
1
0
2
4
8
0
2
4
8
0
2
4
8
0
2
4
8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
2
4
8
0
2
4
8
0
2
4
8
0
2
4
8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
2
4
8
0
2
4
8
0
2
4
8
0
4
8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
24V
～
TO INDOOR UNIT
MAINBOARD
CN12
TO INDOOR UNIT
MAINBOARD
CN11
BLACK
BLACK
RED
RED
RED
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
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
BLACK
BLACK
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
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
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
2
2
2
2
2
2
2
2
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
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
6
L1
L2
CB1
L2
L1
CB
CB
L1
L2
CB2
L2
L1
CB
CB
L1
L2
CB3
L2
L1
CB
CB
RED
BLACK
HTR5
TCO5
TL5
RED
BLACK
HTR4
TCO4
TL4
RED
BLACK
HTR3
TCO3
TL3
HTR1
TCO1
TL1
HTR2
TCO2
TL2
POWER A
POWER B
POWER C
POWER D
Y/G
(green)
Y/G
Y/G
Y/G
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.
Page 27
Indoor Unit
Installation
Summary of Contents for ECD3KW Series
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