Haier AB422XCBAA Service Manual page 18

Installation state: the unit should be placed on the flat floor or be mounted in horizontal direction.
Testing method:
standing-on-floor unit: If the unit cooling capacity is
over 28000W, the noise level should be measured at
the front, left, right directions respectively.
1m
mounting-on-wall unit:
1m
duct unit without auxiliary duct:
2m
duct
mounting-on-ceiling unit:
built-in-ceiling unit:
duct unit with auxiliary duct:
2m
auxiliary duct
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1m
1m
auxiliary duct