Daikin FTKE25BVMT [177/268] Installing outdoor unit

Daikin FTKE25BVMT [177/268] Installing outdoor unit
Outdoor Units ED12-321A
172 Installation Manual
Selecting a location for installation of the indoor units
Outdoor Unit
Level
difference:
7.5m max.
(Heat pump
unit only)
Level
difference:
15m max.
Indoor Unit
Outdoor Unit
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 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)
Level
difference:
15m max.
Indoor Unit
Outdoor Unit
Level
difference:
7.5m max.
(Heat pump
unit only)
The maximum allowable length of refrigerant piping, and the maximum allowable height difference between the
outdoor and indoor units, are listed below. (The shorter the refrigerant piping, the better the performance. Connect so
that the piping is as short as possible. Shortest allowable length per room is 3 m.)
1 Installing Outdoor Unit
When installing the outdoor unit, refer to Precautions for Selecting the Location and the Indoor/outdoor Unit
Installation Drawings.
If drain work is necessary, follow the procedures below.
2. To prevent gas leakage, apply refrigeration machine oil on both inner and outer surfaces of the flare.
(Use refrigeration oil for R-22)
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 Drain Work
Use drain plug for drainage.
If the drain port is covered by a mounting base or floor surface, place
additional foot bases of at least 30 mm in height under the outdoor units feet.
In cold areas, do not use a drain hose with the outdoor unit. (Otherwise, drain
water may freeze, impairing heating performance.)
If the outdoor unit is positioned higher than the indoor
units.
If the outdoor unit is positioned otherwise.
(If lower than one or more indoor units)
Outdoor unit capacity class
Piping to each indoor unit
Total length of piping between all units
2MKD58 3MKD58, 3MXD68 3MKD75, 4MKD75
25m max.
35m max. 60m max.45m max.

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