Daikin 2MXU50GV1B Panduan Instalasi - Halaman 8
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Halaman Cetak
Refrigerant Piping Work
1.
Installing outdoor unit.
1) When installing the outdoor unit, refer to "Precautions for Selecting the Location" on page 2 and the "Outdoor Unit
Installation Drawings" on page 3.
2) If drain work is necessary, follow the procedures below.
2.
Drain work.
1) Use
C
drain plug for drainage.
2) If the drain port is covered by a mounting base or floor surface, place
additional foot bases of at least 30mm in height under the outdoor
unit's feet.
3) In cold areas, do not use a drain hose with the outdoor unit.
(Otherwise, drain water may freeze, impairing heating performance.)
3.
Refrigerant piping.
CAUTION
1) Use the flare nut fixed to the main unit. (To prevent cracking of the flare nut by aged deterioration.)
2) To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.)
3) Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and gas leakage.
Align the centres of both flares and tighten the flare nuts 3 or 4 turns by hand. Then tighten them fully with the torque wrenches.
Do not apply refrigeration
oil to the flare nut avoid
tightening with over torque.
Flare nut tightening torque
Flare nut for φ6.4
Flare nut for φ9.5
Flare nut for φ12.7
■English
[Apply oil]
Do not apply refrigeration
oil to the outer surface.
Flare nut
14.2-17.2N m
(144-175kgf cm)
32.7-39.9N m
(333-407kgf cm)
49.5-60.3N m
(505-615kgf cm)
Apply refrigeration oil to
the inner surface of the
flare.
Spanner
Piping union
Valve cap tightening torque
Gas side
3/8 inch
1/2 inch
21.6-27.4N m
48.1-59.7N m
(220-280kgf cm)
(490-610kgf cm)
Service port cap
10.8-14.7N m
tightening torque
(110-150kgf cm)
Drain-water hole
Bottom frame
C
Drain plug
Hose (available commercially,
inner dia. 16mm)
[Tighten]
Torque wrench
Flare nut
Liquid side
1/4 inch
21.6-27.4N m
(220-280kgf cm)
6