4
McQuay IM 777-3
Installation Guidelines
Installation Guidelines
Service Clearances
In addition to providing adequate space around the unit for
piping coils and drains, access to at least one side of the unit is
always required to allow for regular service and routine
maintenance, which includes filter replacement, drain pan
inspection and cleaning, fan bearing lubrication, and belt
adjustment. Provide sufficient space—at least equal to the
length of the coil—on the side of the unit for coil removal. See
Figure 1 for servicing space requirements.
Maintain at least 54" of clearance in front of electrical power
devices. Electrical power devices that are mounted on the side
of the unit typically are up to 12" deep. See Figure 2.
Figure 1: Servicing Space Requirements
Figure 2: Service Clearance for Electrical Power Devices
Rigging
Skyline air handlers ship as separate sections, completely
assembled, or in modules of assembled sections.
The unit must
be rigged as it ships from the factory. Do not rig units after
assembly.
Units are provided with a factory-installed base
railand can be lifted using the 2" diameter lifting holes located
in the corners of each shipping section. To prevent damage to
the unit cabinetry, use spreader bars. Position spreader bars to
prevent cables from rubbing the frame or panels. Before
hoisting into position, test lift for stability and balance. Avoid
twisting or uneven lifting of unit.
Figure 3: Unit and Section Rigging
4 . 0 0 " b a s e r a i l e x t e n s i o n
W i d t h
3 0 . 0 0 "
4 . 0 0 "
W i d t h o f c o i l s e c t i o n
W i d t h o f
f a n s e c t i o n
3 0 . 0
0 "
H e i g h t
5 4 "
1 2 "
