McQuay MDS080B R - Page 22

©2005 McQuay International
21
PCB
BA
A B
PCB
Connect A with B, wrong
A
B
A
B
com2
Connection port
Connection port
com2
com1
Typical wrong wiring connection as shown as below:
n o t b u s s tru c tr u e ,c o n n e ctio n c a b le
s h o u ld b e la ye d a s b u s stru c tu re
B
p
c
A
i
n
A
p
c
B
i
n
O u td o o r u n it
C o n tro l b o x
M a in P C B
C o n ne c tio n
p o rt
S c re e n
la ye r
BA
A B
P C B
C o n tro l b o x
In d o o r u n it 1
In d o o r u n it 2
C o m m u n ic a tio n c a ble
C o m m u n ic a tio n c ab le
P C B
C o n tro l b o x
A
B
A
B
C o n n e c tio n p o rt
C o n n e c tio n p o rt
c o m 1
com2
com2
c o m 1
B
p
c
A
i
n
A
p
c
B
i
n
Screen layer must be
grounded with outdoor unit
Control box
Connection
port
Main PCB
PCB
A
B
Neglect to
connect
A
B
Connection port
com1
com2