7
English
[ How to detach side and bottom panels ]
•
Remove the screws in the side panel and pull the side panel outward (A). Then, while pushing
upwards (B), slide the panel towards the front of the unit (C). (Same for both left and right sides)
( Refer to Fig. 6 and 7 )
•
After detaching the side panels, turn the bottom panel downward (D) about 45
°
, and pull it outward
(E).
( Refer to Fig. 8 )
5. REFRIGERANT PIPING WORK
• See the installation manual for the outdoor unit for details on how to connect the refrigerant piping.
•
Be sure to insulate both the gas piping as well as the liquid piping.
•
Not doing so may cause leaks. (Use insulation material which can fully resist the 120°C temperature that
the gas piping can sometimes reach when using a heat pump.)
•
If the temperature and humidity of the branch piping could possibly exceed 30°C or RH80%, reinforce the
refrigerant insulation (20mm or thicker). Condensation may form on the surface of the insulation.
•
Installation should only be carried out after checking in advance the type of refrigerant to be used. (Using
the wrong refrigerant will prevent the unit from functioning properly.)
CAUTION
• Use a pipe cutter and flare suitable for the type of refrigerant.
• Apply ester oil or ether oil around the flare section before connecting.
• To prevent dust, moisuture or other foreign matter from infiltrating the tube, either pinch the end
or cover it with tape.
• Do not allow anything other than the designated refrigerant to get mixed into the refrigerant
circuit, such as air, etc. If any refrigerant gas leaks while working on the unit, ventilate the room
thoroughly right away.
•
Use copper alloy seamless pipes ( ISO 1337 ).
•
The outdoor unit is charged with refrigerant.
•
Be sure to use both a spanner and torque wrench together,
when connecting or disconnecting pipes to/from the unit.
( Refer to Fig. 9 )
•
Refer to the Table 2 for flare dimensions and tightening
torque.
NOTE
•
Use the flare nut included with the unit main body.
CAUTION
Over-tightening the flare nut may break it and/or cause the refrigerant to leak.
(A)
(A)
(C)
(C)
(B)
Left side panel
Fig. 6
Fig. 7
Side panel screw
Left side
panel
Top side
Right side
panel
Right side panel
(D)
(E)
Bottom panel
Fig. 8
Approx. 45˚
Wall
Torque wrench
Flare nut
Piping union
Fig. 9
Spanner
01_EN_3P184443-2.fm Page 7 Monday, July 3, 2006 3:14 PM
