Page 16 of 48 / IM 986-2
Installation Procedure
Risers and Cabinet
1 . Position the cabinet and risers within the building
pipe chase and align with the unit on the floor above
and/or below (Figure 23) .
Figure 23: Position the Cabinet and Risers
Note: Refer to "Critical Dimensions", page 14 to
determine the correct recess depth from the front of
the unit to the drywall face. When the installation is
complete, the return air grille/panel frame must meet
to seal with the cabinet discharge opening and the
discharge air diffuser duct must meet and seal with
the discharge opening.
2 . Using the riser extensions, make preliminary riser
connections between the units above and or below
to assure proper riser alignment (supply, return and
condensate). See figure 20 on page 14.
3 . After all components are aligned properly, anchor
the unit cabinet to the floor using the McQuay
provided mounting brackets (Figure 24) .
4 . Locate the two (2) mounting brackets in the parts
bag and position them near the back corners of
the unit, or one on a side and one on the back,
whichever location or combination is most suitable,
as illustrated in figure 24. Cut away an area of the
1/4" isolation pad at the mounting bracket locations .
Contractor is responsible for the appropriate
fasteners to secure the brackets to the floor, as local
codes dictate .
Figure 24: Position the Cabinet for Securing to the Floor
with Mounting Brackets (2)
IMPORTANT
A field-supplied ¼” thick isolation pad should be installed now
(Figure 23).
1/4" Isolation Pad
Inlet, Outlet and
Condensate
Risers
Riser Couplings
Connect to Risers
on Unit Above
Risers Through
Floor Opening
Stud Wall Floor Plate
and Finish Wall
Location
Riser Extensions
Align and Connect
to Couplings and
Unit Above
Provided Mounting
Brackets (2)
Fasteners (by others)
Finished Wall
Stud Wall Floor Plate
Unit Front
Unit Cabinet
3
1
/
8
" from Finished
Wall
Back of
Unit
1/4" Vibration
Isolation Pad
Installation and maintenance is to be performed only by qualified
personnel who are familiar with, and in compliance with state, local
and national codes and regulations, and experienced with this
type of equipment. Sharp edges and coil surfaces are potential
injury hazards. Avoid contact with them.
CAUTION
!
The cabinet must be centered between the wall studs and plumb
vertically for the grille/panel frame and diffuser to properly align
and seal to the cabinet. Use of a 4' level is recommended.
IMPORTANT
Summary of Contents for IM 986-2 VHC
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