Mitsubishi Electric CITY MULTI PEFY-WL06NMAU-A Manual De Instalación página 15

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 and outlet duct to prevent condensation.
•
Be sure to change the position of air filter to the position where it can be serviced.
•
[Fig. 8.0.1] (P.7)
<A> In case of rear inlet
<B> In case of bottom inlet
A Duct
C Access door
E Ceiling surface
G Leave distance enough to prevent short cycle
• Procedure for changing the rear inlet to the bottom inlet.
Caution:
When the duct is connected to the inlet at the bottom of the unit, the sound
pressure level will be greater by approximately 10 dB than when the duct is
connected to the inlet at the back of the unit.
For this reason, it is recommended to connect the duct to the back inlet. When
using the inlet at the bottom of the unit, offset the position of the inlet on the
indoor unit relative to the inlet on the ceiling as shown in Figures <A> and <B>
to minimize noise.
[Fig. 8.0.2] (P.7)
A Filter
1. Remove air filter. (First remove filter lock screw.)
2. Remove the bottom plate.
3. Fit the bottom plate to the rear of the body. [Fig. 8.0.3] (P.7)
(Position of lug-holes on the plate is different from those for rear inlet.)
When the plate is attached on
the rear side, it exceeds the
height of the rear body panel.
Replicate the plate along the slit
when there is not enough room
above for the entire unit.
Screw holes are hidden under
the insulation. Screw through
the insulation to screw the plate
down.
4. Fit filter to the underside of the body.
(Be careful of which side of the filter to fit.) [Fig. 8.0.4] (P.7)
[Fig. 8.0.4] (P.7)
C Nail for the bottom inlet
B Air inlet
D Canvas duct
F Air outlet
B Bottom plate
D Nail for the rear inlet
Caution:
• To reduce the risk of injury from metal sheet edges, wear protective gloves.
• Keep the distance between the inlet grille and the fan over 850 mm
[33-1/2 in].
If it is less than 850 mm [33-1/2 in], install a safety guard not to touch the
fan.
Install sufficient thermal insulation to prevent condensation forming on
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outlet duct flanges and outlet ducts.
• To avoid electrical noise interference, do not run transmission lines at the
bottom of the unit.
The noise from the intake will increase dramatically if intake is fitted
•
directly beneath the main body. Intake should therefore be installed as far
away from the main body as possible.
Particular care is required when using it with bottom inlet specifications.
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