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6
English
Refrigerant Piping Work
Installing outdoor unit
1.
When installing the outdoor unit, refer to precautions for selecting the location and the indoor/outdoor unit and water heater installation drawings.
•
If drain work is necessary, follow the procedures below.
•
Drain work
2.
Use “Drain socket assy” (option) for drainage.
•
If the drain port is covered by a mounting base or
fl
oor surface, place additional foot bases of at least 100mm in height under the outdoor unit’s feet.
•
In cold areas, do not use a drain hose with the outdoor unit. (Otherwise, drain water may freeze, impairing heating performance.)
•
Insert (C) drain receiver onto
1.
(A) drain socket and (B) drain cap
beyond 4 projections around drain
socket and drain cap.
Insert drain socket and drain caps
2.
into their matching drain hole ;
(A) drain socket into drain hole
Ι
and (B) drain caps into drain hole
ΙΙ
and
ΙΙΙ
. After insertion, turn
them about 40° clockwise.
Projections
Projections
(C) Drain receiver
(A) Drain socket
(B) Drain cap
(Be sure not to insert
them into wrong drain
holes, or there causes
water leakage.)
(View from bottom)
I
II
III
NOTE
Check that the (C) drain receiver is correctly engaged with the
•
projections of the (A) drain socket and (B) drain cap. Otherwise,
water leakage may result.
Projections
(4 points)
Projections
(4 points)
Connect vinyl hose on the market (internal diameter of 25mm) to (A) drain socket.
3.
(If the house is too long and hangs down,
fi
x it carefully to prevent the kinks.)
Make sure that there is no water leakage from portion
4.
Ι
,
ΙΙ
, or
ΙΙΙ
.
NOTE
If the drain holes of the outdoor unit are covered with the mounting bracket or the
fl
oor, raise the unit to provide the space of
•
more than 100mm under the leg of the outdoor unit.
Refrigerant piping
3.
CAUTION
Use the
fl
are nut
fi
xed to the main unit. (To prevent cracking of the
fl
are nut by aged deterioration.)
•
To prevent gas leakage, apply refrigeration oil only to the inner surface of the
fl
are. (Use refrigeration oil for R410A.)
•
Use torque wrenches when tightening the
fl
are nuts to prevent damage to the
fl
are nuts and gas leakage.
•
Align the centres of both
fl
ares and tighten the
fl
are nuts 3 or 4 turns by hand. Then tighten them fully with the torque wrenches.
[Apply oil]
[Tighten]
Do not apply refrigeration
oil to the outer surface.
Apply refrigeration oil to the
inner surface of the flare.
Torque wrench
Do not apply refrigeration oil to the flare
nut avoid tightening with over torque.
Flare nut
Spanner
Piping union
Flare nut
Flare nut tightening torque
Valve cap tightening torque
Service port cap tightening torque
Flare nut for
φ
6.4
14.2-17.2N • m (144-175kgf • cm)
Liquid pipe 26.5-32.3N • m
(270-330kgf • cm)
10.8-14.7N • m
(110-150kgf • 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)
Gas pipe 48.1-59.7N • m
(490-610kgf • cm)
Flare nut for
φ
15.9 61.8-75.4N • m (630-769kgf • cm)
01_EN_3P266963-1D.indd 6
10/30/2014 9:40:12 AM