Mitsubishi Heavy Industries SCM71ZM-S1 Technical Manual page 333

It could cause electric shocks.
②
Preparation before installation (continued)
To change setting
1. Remove one screws located on the under of the receiver and
detach the board.
2. Change the setting by the switch on PCB.
3. When SW1 is turned to OFF position, change the wireless remote control setting.
For the method of changing the setting, refer to Setting to avoid mixed
④ Wireless remote control
communication of
*The receivable area of the signal refer to
③
How to install the receiver
The following two methods can be used to install the receiver onto a ceiling or a wall.
Select a method according to the installation position.
<Installation position>
(1) Drilling of the ceiling (ceiling opening)
Drill the receiver installation holes with
the dimensions shown right at the ceiling
position where wires can be connected.
(2) Wiring connection of receiver
(No polarity)
(3) Installation of the receiver
Remove the screw on the side of the receiver and sprit it into the upper case and lower case.
Install the receiver with one of the two installation methods (A) to (C) shown below.
(A) Direct installation onto the ceiling with screws
 Use this installation method when the ceiling is
wooden, and there is no problem for strength in
installing directly with wood screws.
① Put through the wiring from the back side to the hole
of the lower case.
② Fit the lower case into the ceiling opening. Make
sure that the clearance between the convex part of
the back of the lower case and the ceiling opening
must be as equal as possible on both sides.
③ Using the two installation holes shown right, fix the
lower case onto the ceiling with the enclosed wood
screws. (The other four holes are not used.)
④ Connect the wiring with the wiring from the upper
case by the connector.
Switch
Default settings
.
⑤ Receiver
(A) Direct installation onto the ceiling with wood screws.
(B) Installation with accessory's bracket
Indoor unit terminal
block
Wiring
Reciever
-
Master/Slave setting when using
plural remote controls
Up to two receiver or wired remote
control can be installed in one
indoor unit group.
When two receiver or wired remote
control are used, it is necessary
to change SW on the PCB to set it
as slave.
.
(A) Direct installation onto the ceiling
with wood screws.
(B) Installation with enclosed bracket
Caution
Do not connect the wiring to the power source of the
terminal block. If it is connected, printed board will be
damaged.
Wall
Lower case
opening
Hole
332
-
'17 • SCM-T-225
88mm(H)×101mm(W)
108mm(H)×108mm(W)
Installation hole
Opening
Wiring
Hole
Lower case
Installation
hole
Wiring
Lower
case
Connector
Hole
1
③
H
⑤ Tak
⑥ Fit
(B) In
U
① Ca
wit
pro
on
② Ins
scr
③ Pa
④ Fit
sho
⑤ Fo
Upper
case
3