Mitsubishi Electric RC-EX1A Installation Manual page 10

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ot to apply unexpected stress on the
function.
e enough to generate condensation
t or steam directly
a packaging box or bag in
kness in 1mm or more.
M4 screw (2 pieces)
eeded)
Screw
Control cord
Erectrical box
(Prepare on site)
d install the lower case to erectrical box.
Tighten the screws after
cutting off the thin part of
screw mounting part.
M4 screw
2 (Prepare on site)
The thin part
Upper
ntrol cord,
Lower case
Lower
r upper part.
Upper
or knife,
Lower case
Lower
AMP Air Conditioning
Connect the remote control cord to the
terminal block.
Connect the terminal of remote control (X,Y)
with the terminal of indoor unit (X,Y).
(X and Y are no polarity)
Wiring route is as shown in the right diagram
depending on the pulling out direction.
The wiring inside the remote control case should be within 0.3mm
The sheath should be peeled off inside the remote control case.
The peeling-off length of each wire is as below.
Pulling out from upper left Pulling out from upper center
X wiring : 215mm
Y wiring : 195mm
Install the upper case as before so as not to catch up the remote control cord, and tighten with
the screws.
In case of exposing cord, fix the cord on the wall with cord clamp so as not to slack.
Installation and wiring of remote control
Wiring of remote control should use 0.3mm
Maximum prolongation of remote control wiring is 600 m.
If the prolongation is over 100m, change to the size below.
But, wiring in the remote control case should be under 0.5mm
the case according to wire connecting. Waterproof treatment is necessary at the wire connecting
section. Be careful about contact failure.
100 - 200m ......................... 0.5mm
Under 300m ....................... 0.75mm
Under 400m ....................... 1.25mm
Under 600m ....................... 2.0mm
Master/ slave setting when more than one remote controls are used
A maximum of two remote controls can be connected to one indoor unit (or one group of indoor units.)
Indoor units
Remote control cord (no polarity)
Remote control
Remote control
SW1 "Master"
SW1 "Slave"
Set SW1 to "Slave" for the slave remote control. It was factory set to "Master" for shipment.
Note: The setting "Remote control thermistor enabled" is only selectable with the master remote control in
the position where you want to check room temperature.
The air-conditioner operation follows the last operation of the remote control regardless of the
master/ slave setting of it.
The indication when power source is supplied
When power source is turned on, the following is displayed on the remote control until the
communication between the remote control and indoor unit settled.
Master remote control : "
Slave remote control : "
At the same time, a mark or a number will be displayed for two seconds first.
This is the software's administration number of the remote control, not an error cord.
When remote control cannot communicate with the indoor unit for half an hour, the below indication will
appear.
Check wiring of the indoor unit and the outdoor unit etc.
Sheath
Upper
Upper case
Board
Lower
Wiring
In case of pulling out from
upper left
2
(recommended) to 0.5mm
X wiring : 170mm
Y wiring : 190mm
2
2 core wires or cables. (on-site configuration)
2
. Change the wire size outside of
2
2 cores
2
2 cores
2
2 cores
2
2 cores
Switch
Setting
Contents
M
Master remote control
SW1
S
Slave remote control
Master
Slave
"
"
The left mark is only an
example. Other marks may
appear.
-
84
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'15 • PAC-T-236
Sheath
The range of temperature setting
Upper
When shipped, the range of set tempe
Upper case
Board
Lower
Wiring
In case of pulling out from
upper center
2
.
The peeling-off length
of sheath
Upper
Board
Lower
Heating : 16 ~ 30˚C (55 ~ 86˚F)
Except heating (cooling, fan, dry
Upper limit and lower limit o
Upper limit setting: valid during heat
Lower limit setting: valid except hea
79°F).
When you set upper and lower limit
1. When
TEMP RANGE SET, re
If upper limit value is set
During heating, you cannot set th
If lower limit value is set
During operation mode except h
2. When
TEMP RANGE SET, re
If upper limit value is set
During heating, even if the value
But, the indication is the same a
If lower limit value is set
During except heating, even if the
But, the indication is the same a
How to set upper and lower
1. Stop the air-conditioner, and pr
seconds.
The indication changes to "FUN
2. Press
button once, and cha
3. Press
(SET) button, and
4. Select "UPPER LIMIT
" or "
5. Press
(SET) button to fix
6. When "UPPER LIMIT
" is se
Indication: "
SET UP
Select the upper limit value
(blinking)
Press
(SET) button to
After the fixed upper limit va
7. When "LOWER LIMIT
" is se
Indication: "
SET UP
Select the lower limit value w
(blinking)
Press
(SET) button to
After the fixed lower limit va
8. Press ON/OFF button to finish
It is possible to finish by pressi
ON/OFF button on the way, b
unfinished change of setting is
unavailable.
During setting, if you press
(RESET) button, you return to
previous screen.

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