Mitsubishi Electric Fresh Master GUF-50RD3 Installation Instructions Manual page 11

7.3. Request for refrigerant piping connection
Description of parts to be used
No. Work procedures
Mount the provided
pipe insulation (1) on
the liquid pipe of the
refrigerant piping, and
then mount the flare
insulation (2) on the
1
gas pipe.
Fixing of insulated pipe
2
Fixing of flare insulation
3
Pipe insulation (1)
*1
Field refrigerant piping
"OUT" mark
Pull in this
Insulation material
direction.
Insulation material
Move to the
original position.
Notes:
*1 Insert the flare nut into the field refrigerant piping. Pull the insulation material back at the area where it will be flared, then return
it to its original position after performing the flare work.
Exposing copper piping may result in condensation forming. Be extremely careful when performing this operation.
*2 There must be no gap.
*3, *4 There must be no gap. Slit should be on the top.
Detail of work
"IN" and "OUT" are marked on the
inside of the flare insulation. Mount the
portion marked "IN" near the unit body
and the portion marked "OUT" on the
field piping side.
• Fasten the insulated pipe with the
insulation tape.
• Firmly secure the insulation with the
provided tie band (4) at the position
indicated on the drawing.
• Fasten the flare insulation with the
provided tape (3).
• Fasten with the provided tie band (4)
at the position indicated on the
drawing.
Refrigerant piping (liquid)
Refrigerant piping (gas)
"gas" mark
"IN" mark
Flare insulation (2)
Flare
Flare
There must be no gap.
Fig-1
Item to be observed
• Using the flare insulation of a different type
may result in condensation forming. Check
the type name on the insulation and be sure
to use the correct one.
• To prevent a gap from forming near the
unit's side plate, be sure that the flare
insulation firmly contacts the unit's side
plate before mounting.
• Incorrectly mounting the "INNER" and
"OUTER" sides of the insulation may result
in condensation forming.
Seal the slit securely so that there are no
openings. Be sure to mount the insulation so
that the slit is on the top.
Seal the slit securely so that there are no
openings. Be sure to mount the insulation so
that the slit is on the top.
There must be no gap.
Field refrigerant piping
OUTER
Provided flare insulation
Fig-2 (figure showing the flare insulation)
20
Provided tie band
20
*3
*4
Reference drawing
Fig-1
Fig-2 (Note *2)
Fig-2
Fig-3 (Note *3)
Fig-3 (Note *4)
Unit body plate
INNER
Unit body
*2
Tape (3)
Fasten with tape.
20
20
Fig-3
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