Install The Connecting Pipe - mundoclima MUST 18 HF Manual De Instalación

Air Conditioner Ceiling-Floor

6. INSTALL THE CONNECTING PIPE

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........................................10m
(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 10m
• 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
Measure the necessary length of the connecting
pipe, and make it by the following way.
a. Connect the indoor unit at first, then the outdoor
Bend the tubing in proper way. Don't harm them.
CAUTIONS
• 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. (Chart 14)
• Be sure to use two wrenches simultaneously
when you connect or disconnect the pipes.
b. The stop valve 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 valve, 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 before connection.
c.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 Benable pipe.
• The bending angle should not exceed 90°C
• Bending position is preferably in the bendable
pipe. The larger the better it is .
• Do not bend the pipe more than three times.
Bend the connecting pipe of small wall
thickness.
• 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 of deforming, please bend
the pipe at its biggest radius.
• Use bender to get a small radius pipes.
Use the market brass pipe.
Be sure to use the same insulating materials when
you buy the brass pipe. (More than 9 mm thick)
2. Locate The Pipe
a. Drill a hole in the wall (suitable just for the size
of the wall conduit, 90mmin general), then set on
the fittings such as the wall conduit and its cover.
b. Bind the connecting pipe and the cables
together tightly with binding tapes. Do not let air in,
which will cause water leakage by condensation.
c. Pass the bound connecting pipe through the
wall conduit from outside. Be careful of the pipe
allocation to do no damage to the tubing.
d. Connect the pipes.
e. Then, open the stem of stop valves of the
outdoor unit to make the refrigerant pipe
connecting the indoor unit with the outdoor unit
fluently flow.
f. Be sure of no leakage by checking it with leak
detector or soap water.
g. Cover the joint of the connecting pipe to the
indoor unit with the soundproof/insulating sheath
(fittings), and bind it well with the tapes to prevent
leakage.
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