9
Use frozen oil
Bend the pipe with thumb
Chart 19
Min-radius 100m
Make the end
straight
Chart 21
Chart 20
INSTALL THE CONNECTING PIPE
CAUTIONS
check whether the height drop between the indoor unit and outdoor unit , the length of refrigerant pipe,
and the number of the bends meet the following requirements:
The max height drop .................................................................................................................. 20m.
(If the height drop is more than 10m, you had better put the outdoor unit over above the indoor unit.)
The length of refrigerant pipe ...................................................................................... less than 30m.
The number of bends ...................................................................................................... less than 15
CAUTIONS
•
Do not let air ,dust or other impurities fall in the pipe system during the time of installation .
•
The connecting pipe should not be installed until the indoor and outdoor units have been fixed already.
•
Keep the connecting pipe dry, and do not let moisture in during installation .
The Procedure of Connecting Pipes
1. Measure the necessary length of the connecting pipe, and make it by the following way. (Refer
to “Connect The Pipes “ for details)
1) Connect the one-way valve restrictor in accessories to liquid tube assy, indoor unit at first (Note :only
KN-30/36/45)
2) Connect the indoor unit, then the outdoor unit.
•
Bend the tubing in proper way. Do not harm to them.
CAUTION
•
Daub the surface of the flare pipe and the joint nuts with frozen oil, and wrench it for 3?4 rounds with
hands before fasten the flare nuts. (Refer to chart 19)
•
Be sure to use two wrenches simultaneously when you connect or disconnect the pipes .
3) The stop value of the outdoor unit should be closed absolutely (as original state ).Every time you
connect it ,first loosen the nuts at the part of stop value , then connect the flare pipe immediately (in 5
minutes ).If the nuts have been loosened for a long time ,dusts and other impurities may enter the
pipe system and may cause malfunction later .So please expel the air out of the pipe with refrigerant
(R-22) before connection .
4) Expel the air (refer to the “Expel The Air “) after connecting the refrigerant pipe with the indoor unit
and the outdoor unit. Then fasten the nuts at the repair-points.
Notices For Bendable Pipe
•
The bending angle should not exceed 90º
•
Bending position is preferably in the middle of the bendable pipe .The larger the bending radius the
better it is.
•
Do not bend the pipe more than three times.
Bend the connecting pipe of small wall thickness (K 9.53mm)
• Cut out a desired concave at the bending part of the insulating pipe.
• Then expose the pipe (cover it with tapes after bending).
• To prevent collapsing or deforming, please bend the pipe at its biggest radius.
• Use bender to get a small radius pipes .
SZ000288/En
06/22/2004, 5:07 PM
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