Duct Work; Remote Controller; Installing Procedures - Mitsubishi Electric PEH-P400 Manuel D'installation

1. Ensure that the drain piping is downward (pitch of more than 20 mm/m) to the
outdoor (discharge) side.
2. Ensure that any cross-wise drain piping is less than 20 m (excluding the differ-
ence of elevation). If the drain piping is long, provide metal braces to prevent it
from waving. Never provide any air vent pipe. Otherwise drain may be ejected.
3. Use a hard vinyl chloride pipe VP-25 (with an external diameter of 32 mm) for
drain piping.

8. Duct work

• In connecting duct, insert canvas duct between unit and duct.
• Use incombustible material for duct parts.
• Provide full insulation to inlet duct flange, outlet duct flange and outlet duct to
prevent condensation.
• Be sure to apply the air filter near the air inlet grille.
• Before connecting an inlet duct, remove the air filter (supplied with the unit),
then install that filter in the inlet grille.
[Fig. 8.0.1] (P.4)
A Air inlet
C Access door
E Canvas duct
G Connect common reference potential wire between duct-work to air conditioner
Caution:
• Outlet duct is 850 mm or more necessary to construct.
• To connect the air conditioner main body and the duct for potential equali-
zation.
• Inlet temperature sensor when an inlet duct is installed.
An inlet temperature sensor is installed on the inlet duct flange. Before con-
necting an inlet duct, this sensor must be removed and installed in the speci-
fied position.
[Fig. 8.0.2] (P.4)
A Inlet duct flange
C Sensor protection plate
E Inlet duct
1 Pull out the sensor, and remove the sensor fixture and protection plate. (The
protection plate must be discarded.)

9. Remote controller

9.1. Installing procedures

(1) Select an installing position for the remote controller (switch box).
Be sure to observe the following precautions.
[Fig. 9.1.1] (P.4)
A Remote controller profile
B Required clearances surrounding the remote controller
C Temperature sensor
1 The temperature sensors are located on both remote controller and indoor
unit. To use the temperature sensor on the remote controller, mainly use the
remote controller for temperature setting or room temperature detection. In-
stall the remote controller in such an area that can detect average room tem-
peratures, free of direct sunlight, airflow from the air conditioner, and other
such heating source.
2 In either case when the remote controller is installed in the switch box or on the
wall, provide the clearances indicated in the diagram.
Note:
Check that there is no electric wire left close to the remote controller sensor.
If any electric wire is near the sensor, the remote controller may fail to detect
a correct room temperature.
3 Procure the following parts locally:
Switch box for two pieces
Thin copper conduit tube
Lock nuts and bushings
(2) Seal the service entrance for the remote controller cord with putty to
prevent possible invasion of dew drops, water, cockroaches or worms.
<A> For installation in the switch box:
• When the remote controller is installed in the switch box, seal the junction
between the switch box and the conduit tube with putty.
B Air outlet
D Ceiling surface
F Keep duct-work length 850 mm or more
B Inlet temperature sensor
D Sensor fixture
D Installation pitch
4. Ensure that collected pipes are 10 cm lower than the unit body's drain port .
5. Put the end of the drain piping in a position where no odor is generated.
6. Do not put the end of the drain piping in any drain where ionic gases are
generated.
2 Connect the inlet duct.
3 Drill a sensor hole (ø12.5 dia.) on the side on the duct.
4 Assemble the sensor and fixture.
• When pulling out the sensor, do not pull it by the lead wire. Doing so may result
in wire breakage.
• Before connecting the inlet duct, make sure that the sensor, its fixture and
protection plate are removed.
• The sensor removed in step 1 must be re-installed in the position specified in
the drawing. Installation of the sensor in an incorrect position may result in
malfunction.
• Mount holes for outlet duct flange and inlet duct.
[Fig. 8.0.3] (P.4)
A Inlet duct flange
B PEH-P400: 10 × 130 pitch = 1300
PEH-P500: 12 × 130 pitch = 1560
C PEH-P400: 34-ø3 holes (Inlet duct mount holes)
PEH-P500: 38-ø3 holes (Inlet duct mount holes)
D Top of the unit
E Outlet duct flange
F PEH-P400, 500: 8 × 130 pitch = 1040
G PEH-P400, 500: 26-ø3 holes (Outlet duct mount holes)
H PEH-P400, 500: 5 × 110 pitch = 550
I PEH-P400, 500: 3 × 130 pitch = 390
<B> For direct installation on the wall select one of the following:
B-1. To lead the remote controller cord from the back of the controller:
• Prepare a hole through the wall to pass the remote controller cord (in order to
run the remote controller cord from the back), then seal the hole with putty.
B-2. To run the remote controller cord through the upper portion:
• Run the remote controller cord through the cut-out upper case, then seal the
cut-out notch with putty similarly as above.
[Fig. 9.1.1] (P.4)
C Wall D Conduit
F Bushing G Switch box
H Remote controller cord
(3) Install the lower case in the switch box or on the wall.
[Fig. 9.1.1] (P.4)
<A> For installation in the switch box
C Switch box for two pieces
E Cross-recessed, pan-head screw
G Seal the remote controller cord service entrance with putty
<B> For direct installation on the wall
H Wood screw
Caution:
Do not over-tighten the screws to possible deformed or broken lower case.
Note:
• Select a flat place for installation.
• Be sure to use two or more locations for securing of the remote control-
ler in the switch box or on the wall.
E Lock nut
I Seal with putty
D Remote controller cord
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