9
Daub the surfaces 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.
CAUTION
Use frozen oil
Bend the pipe with thumb
min-radius 100m
Make the end straight
Chart 19
Chart 20
Chart 21
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.
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.
3)
4)
Notices For Bendable Pipe
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.
INSTALL THE CONNECTING PIPE
CAUTIONS
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
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
The Procedure of Connecting Pipes
Measure the necessary length of the connecting pipe, and make it by the following way. (Refer to
Connect The Pipes
for details)
1.
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.
The bending angle should not exceed 90 .
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.
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