10
5. Installing the unit
5.1.
Hanging the unit body
►
Bring the indoor unit to an installation site as it is packed.
►
To hang the indoor unit, use a lifting machine to lift and pass through the
hanging bolts.
[Fig. 5.1.1] (P.3)
A
Unit body
B
Lifting machine
[Fig. 5.1.2] (P.3)
C
Nuts (field supply)
D
Washers (square) (accessory)
E
M10 hanging bolt (field supply)
5.2.
Confirming the unit’s position and fixing
hanging bolts
► Ensure that the hanging bolt nuts are tightened to fix the hanging bolts.
►
To ensure that drain is discharged, be sure to hang the unit at level using
a level.
Caution:
Install the unit in horizontal position. If the side with drain port is installed
higher, water leakage may be caused.
6.
Refrigerant pipe and drain pipe specifications
To avoid dew drops, provide sufficient antisweating and insulating work to the
refrigerant and drain pipes.
When using commercially available refrigerant pipes, be sure to wind commercially
available insulating material (with a heat-resisting temperature of more than 100°C
[212°F] and thickness given below) onto both liquid and gas pipes.
Insulate all indoor pipes with form polyethylene insulation with a minimum density of
0.03 and a thickness as specified in the table below.
1
Select the thickness of insulating material by pipe size.
Pipe size
Insulating material’s thickness
6.4 mm to 25.4 mm [1/4 to 1 in]
More than 10 mm [7/16 in]
28.6 mm to 38.1 mm [1-1/8 to 1-1/2 in]
More than 15 mm [5/8 in]
2
If the unit is used on the highest story of a building and under conditions of
high temperature and humidity, it is necessary to use pipe size and insulating
material’s thickness more than those given in the table above.
3
If there are customer’s specifications, simply follow them.
6.1.
Refrigerant pipe and drain pipe specifications
(Unit: mm [in])
Model
Item
PEFY-P·NMAU-E4
06·08·12·15·18
24·27·30·36·48·54
Refrigerant pipe
(Brazing connection)
Liquid pipe
ø 6.35 [1/4]
ø 9.52 [3/8]
Gas pipe
ø 12.7 [1/2]
ø 15.88 [5/8]
Drain pipe
O.D. ø 32 [1-1/4]
6.2.
Refrigerant pipe, drain pipe
[Fig. 6.2.1] (P.3)
A
Refrigerant pipe (liquid pipe)
B
Refrigerant pipe (gas pipe)
C
Drain pipe (O.D. ø32 mm [1-1/4 in])
D
Drain pipe (O.D. ø32 mm [1-1/4 in], spontaneous draining)
