Mitsubishi Electric Lossnay VL-220CZGV-EB Handbook page 27

(6) Failure mode 6: Water leaks from the Lossnay unit.
No. Problem
1 Water leaks from
the Lossnay unit.
2 Water leaks from
the duct pipe.
*For details of drain and duct pipes, see the installation manual.
Factor
Is the drain pipe tilted downward
at an angle of 1° or more?
Is the drain hose securely con-
nected?
Is the drain pan clogged with
dust?
Is the drain pipe insulated for
prevention from freezing?
Is the Lossnay unit installed at the
angle as shown below?
Drain outlet direction
Tilt 0 to 1° towards drain discharge side
OA
RA1
Drain outlet
Duct connecting flange direction
Horizontal (within ±1°)
Does dew condense on the exte-
rior surface?
Is each duct pipe tilted toward the
outside for 1/30 or more?
Is the duct connecting flange insu-
lated up to the base?
Is the duct securely connected to
the Lossnay unit and duct con-
necting flange?
Tilt the drain pipe at an angle of 1° or more.
Connect the drain hose securely.
Remove dust.
Insulate the drain pipe securely.
Install the Lossnay unit as shown in the left
diagram.
0 to 1°
• Check that the Lossnay unit and duct pipe are
installed on the interior side of the insulating
layer in the attic.
• Check that the duct and drain pipes are insu-
lated.
Tilt each duct pipe for 1/30 or more.
Follow the installation manual and insulate the
duct connecting flange securely.
Connect the duct securely.
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Corrective action