Mitsubishi Electric GUG-01SL-E Installationsanleitung Seite 13

Refrigerant pipe work (continued)
Installation for refrigerant piping
After the refrigerant pipe connection is complete, be sure to apply
insulation to the connector (flare connection) using the attached
insulated pipe as shown in the following figures.
• Make sure not to leave a gap between the insulated pipe and the
indoor units sa well as the insulated pipe and the field refrigerant
piping.
• Faulty insulation application may cause condensation to form
resulting in water leakage.
Pipe size information
Dx-coil unit - GUG-01SL-E
Ref. pipe
A / B 6.35 / 12.7
size of unit
Outdoor unit - PUHZ-ZRP35 PUHZ-ZRP50 PUHZ-ZRP71
Ref. pipe
C / D 6.35 / 12.7
size of unit
Pipe size
between Dx-
E / F 6.35 / 12.7 6.35 / 12.7 *1 9.52 / 15.88 9.52 / 15.88
coil unit and
outdoor unit
*1: To change the pipe size, PAC-SH30RJ and PAC-SH50RJ need to
be installed at Dx-coil unit side.
Dx-coil unit
A
B
Eng-12
GUG-02SL-E GUG-03SL-E
9.52 / 15.88 9.52 / 15.88
PUHZ-ZRP71,
100, 125
6.35 / 12.7 9.52 / 15.88 9.52 / 15.88
E
Outdoor unit
C
F
D
For GUG-01 and 03SL-E
1. Insert the flare nut in the field refrigerant piping, pull the insulating
material when performing flare pipe expansion, and put the
insulating material back so that the copper pipe is not exposed.
* Condensation may occur.
Insulating
Pull
material
Flare nut
2. Wrap the insulating material around the flare connection and the
field refrigerant piping (no gap should exist) and temporarily fix using
the tape for piping construction. (It will be clipped by the insulating
pipes described in the step 3 to fix.)
Non-glued insulation C
(Accessory)
Refrigerant pipe
(Field supply)
3. Wrap the insulated pipe around the flare area and fix the each
insulating pipe with a tie band.
* Be sure to perform construction so as not to leave a gap on the
insulated pipe joint area. (Condensation may occur in the flared
area.)
Insulated pipe
(Accessory)
Insulating material
can stick out from
the insulated pipe
Refrigerant pipe
(Field supply)
* No gap should exist on the
unit body
Insulated pipe
Joint is the upper side
(Accessory)
(Target: Within the range
of 30° right or left from the
right above)
* No gap should exist
(Condensation may
occur)
4. Wrap the tape for piping construction around the joint between the
insulated pipe and the field refrigerant piping to prevent the insulated
joint from being exposed.
Refrigerant pipe
(Field supply)
Insulating
material
Flare nut
Put it back
* No gap should exist
* No gap should exist on
the refrigerant piping body
(Condensation may occur)
Body side
panel
Unit body
* No gap should exist
(Condensation may occur)
[Good example] [Bad example]
Tie band
(Accessory)
Unit body
(Field supply)
Tape wrapped area
Unit (mm)