Reznor MAPS II Unit Installation Manual - Manual (Page 20)

Form I-MAPS II, Page 20
To avoid possible damage, it is recommended that the outside air hood be
installed after the system has been placed on the roof. The air hood should be
installed before the blower is operated. Do not install the hood while the system
is in operation.
All screw ends should be inside the air hood. Remove plastic film from painted
parts before installing. Refer to the illustration that applies:
FIGURE 10A for Cabinet Sizes A and B without a power exhaust option
FIGURE 10B for Cabinet Size A with a power exhaust option
FIGURE 10C for Cabinet Size B with a power exhaust option
FIGURE 10D for Cabinet Size C with or without a power exhaust option
( NOTE: See Model Size/Cabinet Size cross-reference tables in the Appendix
on page 58.)
Instructions (apply to all FIGURES except where noted):
1. Install Top Panel - On the air inlet of the cabinet, remove and save the
factory-installed screws attaching the system top. Slide the hood top panel
underneath the edge of the cabinet top. The edge of the hood top panel
must be between the cabinet top and the end panel. Reinsert all of the
sheetmetal screws.
2. Install Left Side Panel (right when facing the unit) - Locate the vertical
row of cabinet screws to the right of the opening that attach the condenser
section. Remove and save those screws.
Position the hood left side panel under and to the inside of the hood top
panel. Reinsert the screws to attach the side panel.
Attach the hood side panel to the hood top with sheetmetal screws.
3. Install Right Side Panel (left when facing the unit) - Position the hood
right side panel under and to the inside of the hood top panel. Attach to the
unit using the required number of self-drilling screws.
4. FIGURE 10C - Install Top Panel Slope Section - Position the slope panel
against the top panel and over the side panels. Attach to the top panel and
both sides with sheetmetal screws.
5. Install Bottom Support - Position the hood bottom support so that it is to
the inside of the two side panels.
FIGURES 10A and 10D - Attach to the cabinet using the required number
of self-drilling screws. Attach to both side panels with sheetmetal screws.
FIGURES 10B and 10C - Attach to both side panels with sheetmetal
screws.
6. Install the Filter Assembly
FIGURE 10A, Cabinet Sizes A and B without a power exhaust option -
Attach the center support and the two side filter angles. Attach the filter
spacer with wing screw receptacle. Position the four filters in the opening.
Secure the filters with the filter clamp and the wing screws.
FIGURES 10B and 10C, Cabinet Size A or B with a power exhaust
option - Install the filter frame with filters in place. Position the filter frame
assembly in the inlet opening of the hood. Attach at the front and back
holes with 1/2" sheetmetal screws. Insert a 3/4" sheetmetal screw at each
of the center holes (one on each side).
6.3 Inlet Air Hood
The outside air inlet hood is a weatherized hood with permanent aluminum
filters, designed to be field assembled and installed around the horizontal inlet
air opening of the cabinet.
CAUTION: It is recommended that the inlet to the outside air hood
NOT be facing into the prevailing wind. Allow 14" minimum clearance
from the bottom of the air hood to the mounting surface.
Option AS16 or
AS19, Inlet Air
Hood, Installation
Instructions
Installation NOTE:
If equipped with
a power exhaust
option, attach the
power exhaust
hood(s) before
installing the outside
air hood. See
Paragraph 9.2,
pages 38-39.
NOTES:
- Inlet air hood painted
parts are shipped with a
protective plastic cover-
ing. As parts are being
installed, remove the
protective plastic cover-
ing.
- Select screws care-
fully. Use sheetmetal
screws (slotted head
with straight tip) when
holes in the cabinet are
provided. Use self-drill-
ing screws (head is not
slotted with drill-type tip)
when cabinet holes are
not provided.
6. Mechanical
(cont'd)