En-6
4.4. Installing heat insulation
CAUTION
After checking for gas leaks (refer to the Installation Manual of the outdoor unit),
perform this section.
Install heat insulation around both the large (gas) and small (liquid) pipes. Failure to do
so may cause water leaks.
After checking for gas leaks, insulate by wrapping insulation around the two parts (gas
and liquid) of the indoor unit coupling, using the Coupler Heat Insulation.
After installing the Coupler Heat Insulation, wrap both ends with vinyl tape so that there is
no gap.
Coupler heat insulation
No gap
Coupler heat
insulation
Body
Be sure to overlap the
insulation
CAUTION
Must
fi
t tightly against body without any gap.
5. INSTALLING DRAIN HOSE
Install the drain hose according to the measurements given in the following
fi
gure.
(Left side)
(Right side)
Liquid pipe
Drain pipe
38 mm (O.D.)
Gas pipe
Drain pipe
38 mm (O.D.)
The drain cap is attached
at the factory setting.
Unit : mm
CAUTION
Install the drain hose in accordance with the instructions in this Installation Manual and
keep the area warm enough to prevent condensation. Problems with the piping may
lead to water leaks.
NOTE:
Install the drain hose.
Install the drain hose with downward gradient (1/50 to 1/100) and so there are no rises or
•
traps in the hose.
Use general hard polyvinyl chloride pipe (VP25) [outside diameter 38 mm] and connect it
•
with adhesive (polyvinyl chloride) so that there is no leakage.
When the hose is long, install supporters.
•
Do not perform air bleeding.
•
Always heat insulate the indoor side of the drain hose.
•
Outlet
air
fl
ow
Drain
hose
Trap
Arrange the drain hose lower
than this portion.
Rise
Air bleeding
Supporter
GOOD
PROHIBITED
PROHIBITED
PROHIBITED
1.5 to 2 m
When the unit is shipped from the factory, the drain port is on the left side (control box side).
•
When using the drain port on the right side of the unit, reinstall the drain cap to the left
•
side drain port.
Drain port
Drain cap
Cable tie
CAUTION
Always check that the drain cap is installed to the unused drain port and is fastened
with the Cable tie.
If the drain cap is not installed, or is not suf
fi
ciently fastened by the Cable tie, water
may drip during the cooling operation.
Cut the drain hose insulation at a position approximately 80 mm from the end with
•
cutters, etc.
Stick the large drain hose insulation at the drain hose installation side.
•
Stick the small drain hose insulation at the drain cap side.
•
Drain hose
insulation
(large)
Drain hose
Drain hose insulation (small)
Drain hose
insulation
(small)
Drain hose
Drain hose
insulation
(large)
Drain cap
unit
unit
Unit
Unit
Unit : mm
Cut line
Cover the drain cap with the drain hose insulation.
•
9379127035-02_IM.indb Sec1:6
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