York YKHC 18 Service Manual page 33

B. New built houses and ceilings
a. In the case of new built house, the hook can be embedded in advance (refer to the A.b mentioned above).
But it should be strong enough to bear the indoor unit and will not become loose because of concrete shrinking.
b. After installing the body, please fasten the installation paper board onto the air conditioner with bolts
(M5X16) to determine in advance the sizes and positions of the hole opening on ceiling. Please first guarantee the
flatness and horizontal of ceiling when installing it. Refer to the A.a mentioned above for others.
c. Refer to the A.c mentioned above for installation.
d. Remove the installation paper board.
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