York YKKE Series, Installation Manual

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5. Mount the indoor unit. You will need two people to
lift and secure it. Insert suspension bolts into the unit’s
hanging holes. Fasten them using the included washers
and nuts (See Fig. 4.5).
Fig. 4.5
NOTE: The bottom of the unit should be 24mm (0.9”)
higher than the ceiling board. Generally, L
(indicated in Fig. 4.6) should be half the length of the
suspension bolt or long enough to prevent the nuts from
coming off.
Fig. 4.6
CAUTION
Ensure that the unit is completely level. Improper
installation can cause the drain pipe to back up into the
unit or water leakage.
Indoor Unit Installation
Wall
Ceiling board
Main body
24mm (0.9”)
L
NOTE: Ensure that the indoor unit is level. The unit is
equipped with a built-in drain pump and float switch.
If the unit is tilted against the direction of condensate
flows (the drainpipe side is raised), the float switch may
malfunction and cause water to leak.
Water level
Fig. 4.7
NOTE FOR NEW HOME INSTALLATION
When installing the unit in a new home, the ceiling
hooks can be embedded in advance. Make sure that the
hooks do not come loose due to concrete shrinkage.
After installing the indoor unit, fasten the installation
paper template onto the unit with bolts (M6X12) to
determine in advance the dimension and position of the
opening on the ceiling. Follow the instructions above for
the remainder of the installation.
Installation template
M6 x 12 Bolts
Main body
Fig. 4.8