Advertisement
3 How to Install
(1)Determine the installation of the remote sensor (switch box).
The follwing items must be observed.
➀
Select a place where the remote sensor will detect an average
temperature of the room, and where the sensor will not be subject
to direct sunlight, heat sources, or the blow-off from the air condi-
tioner, etc.
➁
Install the sensor within the length of the cable provided (12m).
(The cable cannot be extented. If extented, it may cause misoper-
ation due to noise.)
➂
The following parts must be procured at the site.
•Cross-recessed pan head screw
M4 .... Tow screws
•Single switch box
•Thin steel conduit
•Lock nut, bushing
(2)Connect the wires.
•
Connect the 2-core cable to the
terminal block in the lower case.
Peel the sheath of the 2-core
cable as shown in Fig.1 , and
correctly wire it as shown in
Fig.2.
Conductor
Sheath
Insulation
10
20
Fig.1
•
The wiring connection of the indoor unit's electrical box and
remote sensor is an shown in Fig.3. There are three methods of
connecting the 2-core cable to the electrical box.
Exchange 2-core cable (connector 20)
➀
When using the connector attached to the end of the 2-core
cable as it is.
➁
When cutting the connector attached to the end of the 2-core
cable and connecting the cable to the terminal block in the
I.B. (Indoor Board).
➂
When using the enclosed post for connection and convert
cable.
The above three methods are used according to the indoor unit
being used. If the 2-core cable is to be embedded in the wall, fol-
low Fig.4.
Theminal
2-core cable
To connector
panel wiring
CN20
Remote
I.B
sensor
Electrical box in
indoor unit
Fig.3
(3)Install the lower case on the wall or switch box.
NOTE
The recommended tightening torque for installing the 2-
core cable to the terminal block is 1.17N·m.
Wiring hole:
Refer to (5)
2-core cable
Wood screws
To install on wall
.CAUTION
•If the screws are tightened too hard, the case may
break or deform.
•Install the sensor on a flat wall. If installed on a
bumpy wall, the case may break or trouble may
occur.
Remote
sensor external
Switch box
Center of
switch box
Installation pitch
ELV
To lead wiring from rear
To lead wiring from top
of remote sensor
of remote sensor
Fig.2
To indoor unit
Thin steel conduit
(procured at site)
Single switch box
(procured at site)
Remote
sensor side
Fig.4
Cross-recessed
pan head screws
2-core cable
Securely seal wiring lead in hole
with putty or sillicon. Refer to (6)
To install on switch box
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
MANUFACTURER: MITSUBISHI ELECTRIC CORPORATION Air-conditioning & Refrigeration Systems Works
5-66, Tebira 6 Chome, Wakayama-city, 640-8686, Japan
(4)Fit the upper case.
To remove the case, fit a flat-flap screwdriver into the claw section as
shown below, and move the screwdriver in the direction of the arrow.
(5)Wiring hole for direction installation on wall, etc.
Cut the thin section (shaded section) of the lower case with a knife
or pair of nippers, etc. The 2-core cable connected to the terminal
block is led out from here.
ELV
(6)Securely seal the wiring lead hole with putty or silicon to
prevent dew, water drops, cockroaches and other insects
from entering.
•When installing directly on the wall, seal the section cut on the
lower case with putty or silicon.
If the wiring is to be passed through a hole in the wall (when lead-
ing the wiring from the rear of the remote sensor), seal the hole in
the same manner.
•When installing on a switch box, seal the connection of the switch
box and conduit with putty or silicon.
To lead wiring from top of remote sensor.
2-core cable
4 Setting of the indoor unit
When the remote sensor is connected to the indoor unit and
room temepature detection poisition is changed, reset the setting
of "Set temp. 4-deg. up" in the heating mode as shown below.
➀
K control models
➁
M-NET control models : DIP switch Nos 3-8 on the control
➂
A control models
Catch the two upper claws first, and fit the
case as shown on the left.
.CAUTION
•Securely fit the case until a
catching sound is heard.
It may drop off if is not fitted
securely.
.CAUTION
•Do not turn the screwdriver when
it is fit into the claw section as
the claws may be broken.
2-core cable
Seal with putty
or sillicon
To lead wiring from rear of remote sensor.
To install directly on wall
Conduit
Lock nut
Wall
Switch box
Bushing
Seal with putty
or sillicon
To use switch box
: DIP switch Nos 1-6 on the control
PCB of the indoor unit.
PCB of the indoor unit.
: Refer to A-control air-conditioners
SERVICE TECHNICAL GUIDE.
Seal with putty
or sillicon
Advertisement
