Mitsubishi Electric PEAD-SM71 Manuel D'installation page 21

8. Electrical work
2. Setting example
(1) To use the units in the same room
[Fig. 8-4-3] (P. 8)
a Separate setting
Assign a different pair number to each indoor unit to operate each indoor unit
by its own wireless remote controller.
[Fig. 8-4-4] (P. 8)
b Single setting
Assign the same pair number to all the indoor units to operate all the indoor
units by a single wireless remote controller.
[Fig. 8-4-5] (P. 8)
(2) To use the units in different rooms
Assign the same pair number to the wireless remote controller as that of the
indoor unit. (Leave the setting as it is at purchase.)
3) How to Install
[Fig. 8-4-6] (P. 9) to [Fig. 8-4-13] (P. 10)
1. Common items for "Installation on the ceiling" and "Installation on the
switch box or on the wall"
[Fig. 8-4-6] (P. 9)
A Signal receiving unit external
B Center of Switch box
C Switch box
D Installation pitch
E 6.5 mm (1/4 inch)
F 70 mm (2 - 3/4 inch)
G 83.5 ± 0.4 mm (3 - 9/32 inch)
H Protrusion (pillar, etc)
[Fig. 8-4-7] (P. 9)
A Remote controller wire
B Hole (drill a hole on the ceiling to pass the remote controller wire.)
C Signal Receiving Unit
(1) Select the installation site.
The following must be observed.
a Connect the signal receiving unit to the indoor unit with the supplied remote
controller wire. Note that the length of the remote controller wire is 5 m (16 ft).
Install the remote controller within the reach of the remote controller wire.
b When installing on either the switch box or the wall, allow space around the
Signal Receiving Unit as shown in the figure in [Fig. 8-4-6].
c When installing the Signal Receiving Unit to the switch box, the Signal
Receiving Unit slipped downward for 6.5 mm (1/4 inch) as shown in the figure
in [Fig. 8-4-6].
d Parts which must be supplied on site.
Switch box for one unit
Thin-copper wiring pipe
Lock nut and bushing
e The thickness of the ceiling to which the remote controller is installed must be
between 9 mm (3/8 inch) and 25 mm (1 inch).
f Install the unit on the ceiling or on the wall where the signal can be received
from the wireless remote controller.
The area where the signal from the wireless remote controller can be received
is 45° and 7 m (22 ft) away from the front of the signal receiving unit.
g Install the signal receiving unit to the position depending on the indoor unit
model.
h Connect the remote controller wire securely to the order wire. To pass the
remote controller wire through the conduit, follow the procedure as shown in
Fig. 8-4-8.
[Fig. 8-4-8] (P. 9)
A Fix tightly with tape.
B Remote controller wire
C Order wire
Note:
• The point where the remote controller wire is connected differs depending
on the indoor unit model.
Take into account that the remote controller wire cannot be extended when
selecting the installation site.
• lf the Signal Receiving Unit is installed near a fluorescent lamp specially
inverter type, signal interception may occur.
Be careful for installing the Signal Receiving Unit or replacing the lamp.
2. Installation on the switch box or on the wall
(1) Use the remote controller wire to connect it to the connector (CN90) on
the controller circuit board on the indoor unit.
(2) Seal the Signal Receiving Unit cord lead-in hole with putty in order to
prevent the possible entry of dew, water droplets, cockroaches, other
insects, etc.
[Fig. 8-4-9] (P. 9)
A 150 mm (5 - 15/16 inch)
B Remote controller wire (Accessory)
C Wiring pipe
D Locknut
E Bushing
F Switch box
G Seal around here with putty
• When installing on the switch box, seal the connections between the switch box
and wiring pipe with putty.
[Fig. 8-4-9] (P. 9)
H Seal around here with putty
I Remote controller wire
J Seal around here with putty
• When opening a hole using a drill for Signal Receiving Unit wire (or taking the
wire out of the back of the Signal Receiving Unit), seal that hole with putty.
• When routing the wire via the portion cut off from the upper case, equally seal
that portion with putty.
(3) Install the remote control wire to the terminal block.
[Fig. 8-4-10] (P. 10)
A Insert the minus screwdriver toward the arrow pointed and wrench it to remove the cover.
A flat screwdriver whose width of blade is between 4 and 7 mm (5/32 - 9/32 inch) must be
used.
(4) Installing hole when the Signal Receiving Unit is installed on the wall
direct.
[Fig. 8-4-11] (P. 10)
A Thin-wall portion
B Bottom case
C Remote controller wire
D Conducting wire
• Cut the thin-wall portion inside the bottom case (oblique section) by a knife or a
nipper.
• Take out the connected remote controller wire to the terminal block through this
space.
(5) Install the lower case on the switch box or directly on the wall.
[Fig. 8-4-12] (P. 10)
A Screw (M4 × 30)
* When installing the lower case directly on the wall or the ceiling, use wood screws.
Mounting the cover
[Fig. 8-4-13] (P. 10)
a Hang the cover to the upper hooks (2 places).
b Mount the cover to the lower case
A Cross-section of upper hooks
Caution:
• Insert the cover securely until the clicking sound is made. If not doing so, the
cover may fall.
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