Daikin R410A Split Series Manual de instalación descargar pdf (Pagina 8)

■English 6

Refrigerant Piping Work

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.

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.)

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 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 oil

Torque wrench

Piping union

Flare nut

Spanner

Flare nut tightening torque

Flare nut for φ6.4

14.2-17.2N • m

(144-175kgf • cm)

Flare nut for φ9.5

32.7-39.9N • m

(333-407kgf • cm)

Flare nut for φ12.7

49.5-60.3N • m

(505-615kgf • cm)

Flare nut for φ15.9

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)

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Daikin R410A Split Series Manual de instalación Pagina 8

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