ELECTRICAL WIRING
2
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2.3.
MAIN CIRCUIT BOARD
MAIN PRINTED CIRCUIT BOARD (MASTER)
Re
mo
te
con
tro
l S
wit
ch
(RS
W
-A
) (o
p
tio
n
)
MAIN PRINTED CIRCUIT BOARD (MASTER)
Diffe
re
n
tia
l Wa
te
r
P
re
ssu
re
S
witc
h
(Op
tio
n)
FAN
SPEED
CTRL. (
O
PTION)
BM
S
CONNE
CTION
PO
W
E
R
O
PERAT
IO
N
O
PERAT
IO
N
A
LA
RM
(CHECK)
