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2
ACCESSORY AND REFRIGERANT
Accessory and Installation Parts
Outdoor unit Installation manual × 1
‚
Waterproof rubber cap
3
SELECTION OF INSTALLATION
When using an air conditioner under low outside
temperature condition (Outside temp.:–5 °C or
lower) with COOL mode, prepare a duct or wind
shield so that it is not affected by the wind.
Before installation
Be careful to the following items before installation.
Length of refrigerant pipe
<SM56>
Length of refrigerant
pipe connected to
indoor/outdoor unit
Addition of refrigerant is
5 m to 20 m
unnecessary at the local site.
<Addition of refrigerant>
∗21 m to 30 m
Add 20 g of refrigerant for every
1 m of pipe which exceeds 20 m.
* Caution at addition of refrigerant
When the total length of refrigerant pipe exceeds
20 m, add 20 g/m of refrigerant and the maximum
total length of pipe is 30 m.
(Max. amount of additional refrigerant is 200 g.)
Charge the refrigerant accurately. Overcharge may
cause a serious trouble of compressor.
All manuals and user guides at all-guides.com
Drain nipple
CAUTION
Item
3
Refrigerant Piping
• Piping kit used for the conventional refrigerant cannot
be used.
• Use copper pipe with 0.8 mm or more thickness for
Ø6.4, Ø9.5, Ø12.7.
Use copper pipe with 1.0 mm or more thickness for
Ø15.9.
• Flare nut and flare works are also different from those
of the conventional refrigerant.
Take out the flare nut attached to the main unit of the
air conditioner, and use it.
Suction hood (Side)
<Example>
Discharge hood
Suction hood
(Rear side)
Fin
Fin
Suction
<SM80>
Length of refrigerant
pipe connected to
indoor/outdoor unit
Addition of refrigerant is
5 m to 20 m
unnecessary at the local site.
<Addition of refrigerant>
∗21 m to 30 m
Add 40 g of refrigerant for every
1 m of pipe which exceeds 20 m.
* Caution at addition of refrigerant
When the total length of refrigerant pipe exceeds
20 m, add 40 g/m of refrigerant and the maximum
total length of pipe is 30 m.
(Max. amount of additional refrigerant is 400 g.)
Charge the refrigerant accurately. Overcharge may
cause a serious trouble of compressor.
Air purge
• For air purge, use a vacuum pump.
• Do not use refrigerant charged in the outdoor unit
for air purge. (The refrigerant for air purge is not
contained in the outdoor unit.)
Electrical wiring
• Be sure to fix the power wires and indoor/outdoor
connecting wires with clamps so that they do not
contact with the cabinet, etc.
Discharge
Suction
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