Midea 18K, Installation Manual

Page: 27 / 54

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Page 27
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15KW HEAT KIT
:thermal cut-out
:thermal link, self-resetting
Round hole number Relay number
RELAY 1
RELAY 2
RELAY 1
RELAY 2 CB2
Round hole number
RELAY 4
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 actualunit shall prevail.
NOTE3: TO BE WIRED IN ACCORDANCE WITH NEC
AND LOCAL CODES.
NOTE4: POWER A,B,C,D ARE DIFFERENT POWERS.
Y/G
RED
YELLOW
BLACK
3
% / $ & .
% / $ & . 5 ( '
5 ( '
5 ( '
RELAY4
RELAY1
RELAY2
% / $ & .
% / $ & .
% / 8 (
5 ( '
Aux-Heat
control signal
24V
̚
7 2, 1 ' 2 2 58 1 , 7
0 $ , 1 % 2 $ 5 '
& 1
7 2, 1 ' 2 2 5
8 1 , 70 $ , 1
% 2 $ 5 '
& 1
% / $ & .
% / $ & . 5 ( '
% / $ & .
3(S) 1(L1) 2(L2)
RED
BLACK
HTR1
7 & 2
7 /
RED
BLACK
HTR2
7 & 2
7 /
5 ( '
% / $ & .
HTR3
7 & 2
7 /
L1 L2
&%
/ /
&% &%
L1
L2
/ /
&% &%
&%
POWER A
POWER B POWER C
(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.
Indoor Unit
Ins
tallation