14
/74
DRAWINGS
MAIN PRINTED CIRCUIT BOARD (MASTER)
R
e
mote c
o
nt
rol
S
w
itc
h
(R
S
W
-A
) (
opti
on)
M
A
IN PRINTED CIRCUIT BOARD (M
ASTER)
Differential W
a
te
r
P
ressur
e
S
w
itch (
O
pt
ion)
F
A
N SPEED
CT
RL
. (
O
PT
ION
)
BM
S
CONNECT
ION
PO
WER
O
PER
AT
IO
N
O
PER
AT
IO
N
A
LA
R
M
(CHE
CK
)