Daikin 2MXS52E2V1B, Installation Manual

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■ English 6
Refrigerant Piping Work
1.
Installing outdoor unit
1) When installing the outdoor unit, refer to “Precautions for Selecting the Location” and the “Indoor/Outdoor Unit Installation
Drawings”.
2) If drain work is necessary, follow the procedures below.
2.
Drain work
1) Use 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
1) 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.
• Use torque wrenches when tightening the flare nuts to prevent damage to the flare nuts and escaping gas.
2) To prevent gas leakage, apply refrigeration machine oil on both inner and outer surfaces of the flare.
(Use refrigeration oil for R410A)
Drain-water hole
Bottom frame
Drain plug
While pressing
Hose (available commercially,
inner dia. 16mm)
Coat here with refrigeration machine oil
Torque wrench
Piping union
Flare nut
Spanner
Flare nut tightening torque
Flare nut for
φ
6.4
14.2-17.2N • m
(144-175kgf • cm)
Flare nut for
φ
9.5
32.7-39.9N • m
(333-407kgf • cm)
Flare nut for
φ
12.7
49.5-60.3N • m
(505-615kgf • cm)
Flare nut for
φ
15.9
61.8-75.4N • m
(630-769kgf • cm)
Valve cap tightening
torque
Liquid pipe
26.5-32.3N • m
(270-330kgf • cm)
Gas pipe
48.1-59.7N • m
(490-610kgf • cm)
Service port cap
tightening torque
10.8-14.7N • m
(110-150kgf • cm)
01_EN_3P164392-2E.fm Page 6 Wednesday, May 24, 2006 2:47 PM