Refrigerant Pipe - Carrier 40MB*D Installation Instructions Manual

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The service valves of the outdoor unit should be completely
closed(as original status).Every time you connect,first loosen
the nuts, then connect the flare pipes within 5 minutes. If the
nuts have been loosened for a long time, dusts and other
impurities may enter the pipe system and may cause a
malfunction.So please expel the air out of the pipe with
refrigerant before connection.
Expel the air(refer to the "8.1")after connecting the refrigerant
pipe with the indoor unit and the outdoor unit.
Then fasten the nuts at the service valves.
Bend the connecting pipe of small wall thickness.
• Cut out a proper concave at the bending part of the
insulating pipe.
• Then expose the pipe(cover it with tape after bending).
• To prevent twisting, please bend the pipe at a proper
radius.
NOTE
The bending angle should not exceed 90. o
The bending position is preferably in the middle of the bendable
pipe.
Do not bend the pipe more than three times.
Be sure to use the same insulating materials when you buy the
brass pipe. (More than 0.35in/9mm thick)
3 Connect the pipes.
4 Expel the air with a vacuum pump or refrigerant.
5 Open the service valves of the outdoor unit.
6 Check the refrigerant leakage. Check all the joints
with the leak detector or soap water.
7 Cover the joints of the connecting pipe with the
insulation foam, and bind them well with the tape to
prevent potential leakage.
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8.1
REFRIGERANT PIPE(theunitwiththe
twinsfunction)
Length and drop height permitted of the
refrigerant piping
Note: Reduced length of the branching tube is the 1.64ft
/0,5mof the equivalent length of the pipe,
Table.8-1
2. Place The Pipe
[] Drill a hole in the wall (suitable just for the size of the wall
sleeve), then set the fittings such as the wall sleeve and its
cover.
[] Bind the connecting pipe and the cables together tightly with
binding tapes.
[] Pass the bound connecting pipe through the wall sleeve from
outside. Make sure the pipe allocation does not damage the
copper tubes.
98.42ft/30m
L+LI+L2
164.04ft/50m
49.21ft/15m L1,L2
32.8ft/10m L1-L2
65.8fti20m HI
1.64fti0.5m H2
t
t Outdoor unit
'
¢---
/
The line branch pipe
L2
L1
Indoor unit
o
c_
0
oC
cq
0
-o 0
_=-_
Fig.8-1
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