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‹How to attach dew proof material (only when connected with the RZQSG71L and RZASG71)›
• To make the work easy, set the upper 5 horizontal flaps upward and the lower 3 flaps downward. Then,
attach the provided dew proof material (10) to the third horizontal flap from the bottom as shown in Fig.8.
If the material is not attached to the correct place, dew condensation water may drip.
5. REFRIGERANT PIPING WORK
‹For refrigerant piping of outdoor units, see the installation manual attached to the outdoor unit.›
‹Make sure to carry out thermal insulation in both gas and liquid piping. Incomplete insulation may
result in water leakage. Thermal resistance of the insulation for gas piping must be 120°C or higher.
In a high humidity environment, strengthen the refrigerant piping insulation. If insulation is
insufficient, condensation may form on the insulation surface.›
CAUTION
•
For flare connection use pipe cutter and flaring tools for R32/R410A.
•
Protect or enclose the refrigerant tubing to avoid mechanical damage.
•
Apply ester oil or ether oil to the inside of the flare section before connecting.
•
To prevent dust, moisture or other foreign matters from getting into the tube, either pinch the tube end or
cover the end with tape.
•
Do not allow anything other than the designated refrigerant to get mixed into the refrigerant circuit, such
as air, etc. If any refrigerant gas leaks while working on the unit, ventilate the room thoroughly right away.
Dew proof material (10)
(accessory)
Dew proof material (10)
(accessory)
Dew proof material
Attach the dew proof material while
aligning it to the dew proof material.
Attach the dew proof material while
aligning it to the centre.
Upward
Downward
Horizontal flap
(3rd from the bottom)
Fig. 8
A
A
(Cut exactly at
right angles.)
Remove burrs.
Set exactly at the position shown below.
Flaring
Die
Check
Flare’s inner surface
must be flaw-free.
The pipe end must
be evenly flared in
a perfect circle.
Make sure that the
flare nut is fitted.
0-0.5mm
Clutch-type
Flare tool for
R410A / R32
1.0-1.5mm
Clutch-type (Ridgid-type)
1.5-2.0mm
Wing-nut type (Imperial-type)
Conventional flare tool
3PEN486970-1D.book Page 9 Monday, July 24, 2017 8:54 AM