screens, hood side panels, remaining section of filter support
bracket, seal strip, and all other hardware me in a package
located inside the return-air filter access panel (Fig. 14).
1+ Attach seal strip to upper filter retainel: See Fig. 15.
2. Assemble hood top panel and side panels, upper filter re-
tainer, and hood diain pan (Fig. 16)+
3. Secure lower filter retainer and long section of filter sup-
port bracket to unit. See Fig+ 16. Leave screws loose on
size 017 units.
4. Slide baffle (size 017 units) behind lower filter retainer
and tighten screws.
5. Loosen sheet metal screws for base unit top panel located
above outdoor-air inlet opening, and remove screws for
hood side panels located on the sides of the outdoor-air
inlet opening.
6. Match notches in hood top panel to unit top panel screws.
Insert hood flange between unit top panel flange and unit.
Tighten screws.
7+ Hold hood side panel flanges flat against unit, and install
screws removed in Step 5+
8+ Insert outdoor-air inlet screens and spacer in channel cre-
ated by lower filter retainer and filter support bracket.
9+ Attach remaining short section of filter support bracket+
OUTDOOR-AIR HOOD AND
MOUNTING BRACKETS
details. Use 20-gage, galvanized sheet metal, or similm
corrosion-resistant metal for baffles. Use field-supplied screws
to attach baffles to unit. Screws should be I/4-in. diameter and
5/8-in. long. Drill required screw holes for mounting baffles.
BAFFLE (017 ONLY)
LOWER FILTER
RETAINER
FILTER SUPPORT
BRACKET
\
HOOD SIDE
\ PANELS (2)
HOOD TOP
PANEL
BAFFLE
• (017 ONLY)
FILTER
PACKAGE AN[
HOOD
COMPONENfS
RETURN-AIR FtLTE}
ACCESS PANEL
Fig. 14- Outdoor-Air Hood Component Location
TOP PANEL
UPPER FILTER. HOOD DRAIN
RETAINER X PAN
Fig. 15 -- Seal Strip Location
(Air Hood Cross-Sectional View)
Step 9 -- Install All Accessories -- After all the
factory-installed options have been adjusted, install all field-
installed accessories. Refer to the accessory installation instruc-
tions included with each accessory.
MOTORMASTER® I CONTROL INSTALLATION
Install Field-Fabricated Wind Baffles -- Wind baffles must
be field-fabricated for all units to ensure proper cooling cycle
operation at low mnbient temperatures. See Fig+ 17 for baffle
LOWER
FI_ER
RETAINER
BRACKET
HOOD DRAIN PAN
UPPER FILTER RETAINER
NOTE: The outdoor-air hood comes with a baffle which is used on 017 units
only; discard baffle for 015 units.
Fig. 16- Outdoor-Air Hood Details
) MIN
BAFFLETOP VIEW 1" (25) MIN--_
I= 80- to%---4
/
/.
"%
÷ _ " +.
+ j÷-
+J \,+
3/4" 09)(_P)-+J _
BAFFLEFRONTVIEW
NOTE: Dimensions in ( ) are in mm.
Fig. 17- Wind Baffle Details
Jl 10" (254)
/" ffYp)
-- 40"
(to16)
,..,10" (254)
- (TYP)
"'-_1_+ 5"(381)
__ (TYP)
1" (25) MIN
11
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