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(2) Routing the pipe through the bottom
(1) Braze item 7 high-pressure pipe to the refrigerant service valve so
that the dimples on the pipe are parallel to the edge of the cutout
hole. Expand the end of the field-supplied pipes, and braze them to
item 7 high-pressure pipe.
(2) Attach item 1 low-pressure twinning kit to the sheet metal of the
refrigerant service valve with item 3 screw, and braze it to the
refrigerant service valve.
(3) Braze item 6 elbow pipe to the field-supplied pipe first, and then
braze it to item 1 low-pressure twinning kit.
(4) Flare the field-supplied pipe end, and braze the pipe to the low-
pressure pipe in the middle.
(5) Wrap the pipe in front of item 1 low-pressure twinning kit with item
9 pipe cover, and attach compressor cables to item 9 pipe cover
with item 4 cable tie to keep them out of direct contact with the
pipes.
CAUTION
· Before heating the pipes, place a wet towel on the refrigerant service
valve to keep its temperature below 120˚C [248˚F].
· Direct the flame away from the cables and sheet metals inside the unit
so as not to burn them.
(3) Routing the pipe through the front
(1) Braze item 8 high-pressure pipe to the refrigerant service valve.
(2) Attach item 1 low-pressure twinning kit to the sheet metal of the
refrigerant service valve with item 3 screw, and braze it to the
refrigerant service valve.
(3) Braze item 6 elbow pipe to the field-supplied pipe first, and then
braze it to item 1 low-pressure twinning kit.
(4) Braze item 5 elbow pipe to the low-pressure pipe in the middle.
(5) Wrap the pipe in front of item 1 low-pressure twinning kit with item
9 pipe cover, and attach compressor cables to item 9 pipe cover
with item 4 cable tie to keep them out of direct contact with the
pipes.
CAUTION
· Before heating the pipes, place a wet towel on the refrigerant service
valve to keep its temperature below 120˚C [248˚F].
· Direct the flame away from the cables and sheet metals inside the unit
so as not to burn them.
(4) Slope of twinning pipes (high-pressure side only)
Make sure the slope of the twinning pipes are at an angle
within ±15˚ to the horizontal plane.
If the slope exceeds the specified angle, the unit may be
damaged.
(5) The length of the straight pipe between indoor units and the twinning pipe (high-pressure pipe)
Use the pipes supplied in the twinning kit, and make sure the section of the field-supplied pipe that connects to the twinning
pipe has at least 500 mm [19-11/16 in] of straight section. (The section of the field-supplied pipe that connects to the twinning
pipe must have at least 500 mm [19-11/16 in] of straight section.) If the straight section is less than 500 mm [19-11/16 in], it
may result in equipment damage.
Connect the pipe so that the
dimples on the 7 high pressure
pipe are parallel to the edge of
the cutout hole.
Field-supplied
pipes
3
5
8
Field-supplied pipes
Note. Refer to the figure below for the installation position of the twinning pipe.
Twinning pipe on the high-pressure side
Slope of the twinning pipe is at an angle within ±15° to the horizontal plane.
3
1
3
7
6
Field-supplied pipes
9
Wrap the pipe cover here.
Attach compressor cables to pipe
cover with cable tie to keep them
out of direct contact with the pipes.
1
9
Wrap the pipe cover here.
Attach compressor cables to pipe
cover with cable tie to keep them
out of direct contact with the pipes.
6
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