Wall Mounted Installation Manual

36
Multi F Standard Wall-Mounted Indoor Unit
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MAX
MULTI
F
MULTI
F
Checking the Indoor Unit Drain Hose for Leaks
1. Pour a glass of water on the evaporator.
2. Verify that the water flows appropriately through and out of the drain hose without any leaks.
Figure 53: Checking for Leaks at the Indoor Unit. Example Only; Sys-
tems Will Vary.
Drain Pan
Drain
Hose
Check for Leaks
Drain Hose Connection
Check
for Leaks
Accumulated
drain water
Tip of Drain Hose
In Container
Tip of Drain
Hose Pointing
Up
Tip of Drain Hose
In Water
Air
Kinks
Water
Leak
Water
Leak
Ditch
Less than
2 inch Gap
Between Bottom
of Drain Hose and
Ground
Water
Leak
No rainwater trap
Drain Hose and
Ground are Parallel
Horizontal Drain Hose
>6-1/2 feet
Drain Hose Inserted
<2 inches
Bundle Taped in
Downward
Direction
Less than 2 inch Gap
Buried Pipe
Upward slope
to outdoor
can cause indoor
leaks!
Indoor
Unit
Indoor
Unit
Indoor
Unit
Indoor
Unit
Water
Leak
Indoor
Unit
Indoor
Unit
Water
Leak
Indoor
Unit
Water
Leak
Indoor
Unit
Water
Leak
Drain Hose
Installed in
Upward Direction
Figure 52: Incorrect Slope Angles for the Drain Hose.
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INSTALLATION
Drain Hose Insulation
1. The drain hose and extension must be properly insulated to
ensure condensation will not damage walls, floors, etc. Foamed
polyethylene or equivalent of at least 5/16 inches thick is re-
quired.
2. Overlap the insulation at the connection of the field-installed
piping and the indoor unit piping. Tape together so that no gaps
exist.
3. Secure insulation to the rear piping housing section with vinyl
tape.
4. Bundle the piping and drain hose with tape where they meet at
the back of the indoor unit frame. Position the drain hose at the
bottom of the bundle (positioning the drain hose at the top of
the bundle will cause the drain pan to overflow inside the indoor
unit).