Mitsubishi Electric PAC-YT53CRAU Manuel D'installation page 10

5 Install the bottom case.
Be sure to secure two places of the bottom case.
■ Installation using a switch box
Single switch box
Roundhead
cross slot
screws
Important
To avoid deformation and damage to the
bottom case, do not overtighten the screws.
6 Cut out the cable access hole.
■ Direct wall installation (when running the cable along the wall)
• Cut out the thin-wall part on the cover (the shaded area in the right
figure) with a knife or a nipper.
• Thread the cable from the groove behind the bottom case through
this access hole.
7 Set the dip switches on the top case.
When using two remote controllers in one group, set the dip switches.
When using two remote controllers in one group, specify the main and sub remote controllers using
dip switch No. 1 shown below.
• When connecting only one remote controller to one group, it is always the main remote controller.
When connecting two remote controllers to one group, set one remote controller as the main
remote controller and the other as the sub remote controller.
• The factory setting is "Main".
Setting the dip switches
There are switches on the back of the top case. Remote controller Main/Sub and other function
settings are performed using these switches. Ordinarily, only change the Main/Sub setting of SW1.
(The factory settings are ON for SW1, 3, and 4 and OFF for SW2.)
SW No. SW contents Main
Remote controller
1
Main/Sub setting
Temperature display
2
units setting
Cooling/heating
3
display in AUTO mode
Indoor temperature
4
display
Seal the cable
access hole
with putty.
Refer to 1.
Remote
controller
cable
Refer to 4.
To avoid damage to the bottom case, do not
make holes on it.
ON OFF
Set one of the two remote controllers at one
Main Sub
group to "ON".
When the temperature is displayed in
Celsius Fahrenheit
[Fahrenheit], set to "OFF".
When you do not want to display "Cooling" and
Yes No
"Heating" in the AUTO mode, set to "OFF".
When you do not want to display the indoor
Yes No
temperature, set to "OFF".
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■ Direct wall installation
Wood
screws
Comment
Remote
controller cable
Refer to 4.