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2) Be sure to insulate both the gas and liquid piping. Use
separate thermal insulation pipes for gas and liquid
refrigerant pipes. See the figure below.
Gas pipe
Gas pipe
insulation
Finishing tape
Piping insulation procedure
Gas piping
1
6
3
2
6
A
C
B
1
Piping insulation material(field supply)
2
Flare nut connection
3
Insulation for fitting (field supply)
4
Piping insulation material (main unit)
5
Indoor unit
6
Clamp (field supply)
A
Turn seams up
B
Attach to base
C
Tighten the part other than the piping insulation material
For local insulation, be sure to insulate local piping
all the way into the pipe connections inside the unit.
Exposed piping may cause condensation or may
cause burns when touched.
Make sure that no oil remains on plastic parts of the
decoration panel (optional equipment).
Oil may cause degradation and damage to plastic
parts.
Inter-unit wire
Liquid pipe
Liquid pipe
insulation
Drain hose
Liquid piping
4
5
1
6
3
2
A
C
4
CONNECT THE DRAIN PIPE
4.1 Install the drain pipes.
-
Keep piping as short as possible and slope it downwards at a
gradient of at least 1/100 so that air may not remain trapped
inside the pipe.
-
Keep pipe size equal to or greater than that of the connecting
pipe (PVC pipe, nominal diameter 20mm in, outside diameter
25mm).
- Push the drain hose as far as possible over the drain socket,
and tighten the metal clamp securely.
1
1
6
4
5
2
3
4
- Insulate the drain hose inside the building.
B
- If the drain hose cannot be sufficiently set on a slope, fit the
hose with drain raising piping (field supply).
- Make sure that heat insulation work is executed on the
following 2 spots to prevent any possible water leakage due
to dew condensation.
1 Indoor drain pipe.
2 Drain socket.
4.2 How to perform piping
The drain pipe installation for the unit with pump.
The drain pipe installation for the unit without pump.
18
2
3
Drain socket (attached to the unit)
metal clamp
Drain hose
Insulation (field supply)
200mm
4
1-1.5m
Lean over 1/50
1-1.5m
Lean over 1/50
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