9
5. Locate unit where operating sounds will not disturb owner or neighbors.
6. Locate unit so roof runoff water does not pour directly on the unit. Provide gutter or
other shielding at roof level. Do not locate unit in an area where excessive snow
drifting may occur or accumulate.
7. Where snowfall is anticipated, the height of the unit above the ground level must be
considered. Mount unit high enough to be above average area snowfall and to allow
combustion air to enter the combustion air inlet.
C. ATTACHING EXHAUST AND COMBUSTION AIR INLET HOODS
IMPORTANT: Do not operate this unit without the exhaust and combustion air inlet
hood properly installed. These hoods are shipped in a carton in the return air compart-
ment inside the unit and must be attached when the unit is installed. See Figure 4.
To attach exhaust and combustion air inlet hood:
1. Remove 3 screws securing filter access panel and remove filter access panel. For loca-
tion of filter access panel, see Figure 1.
2. Remove both exhaust and combustion air inlet hoods from their carton, located inside
the return air compartment.
3. Attach filter access panel.
4. Attach the combustion air inlet hood and the exhaust hood each with 4 screws as shown
in Figure 4. Screws are in parts bag shipped in the burner compartment.
5. Vent the unit using the flue exhaust hood, as supplied from the factory, without alteration
or addition. The only exception is with factory approved additions. Consult your local util-
ity or other authority having jurisdiction for accepted venting techniques.
D. COVER PANEL INSTALLATION/CONVERSION PROCEDURE
1.HORIZONTAL TO DOWNFLOW
a. Remove screws and covers from the supply and return bottom sections. NOTE:
Rotate the supply cover 90° and remove.
b. Install gasket (supplied with parts bag) around perimeter of cover on the insulated
side. See Figure 6.
c. Secure covers to the side of the unit using existing screws and those supplied in
the parts bag.
2.DOWNFLOW TO HORIZONTAL
a. Remove screws and covers from the supply and return bottom sections.
b. Install gasket (supplied with parts bag) around perimeter of cover as illustrated in
Figure 5.
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