Dwg. No. X664209 P01
Page 7
LOCATIONS AND RECOMMENDATIONS
HORIZONTAL AIRFLOW APPLICATION
1. These units are design certified for outdoor installations. These
units may be installed directly on wood flooring or on Class A,
Class B, or Class C roof covering material. The discharge air
from the condenser fans must be unrestricted for a minimum of
3 feet above the unit.
NOTE: The unit is shipped for horizontal installation.
The Air Inlet Hood in the combustion blower access panel must
have adequate clearance around the air opening into the
combustion area. See Outline Drawing, Figure 4.
Examine all flue product-carrying areas of the furnace, its vent
system, and the main burner for safe operation. A periodic
inspection of the furnace should be made by a qualified service
agency at the start of each heating season.
Replacement parts list for this Gas/Electric Air Conditioner, may be
obtained by contacting your local manufacturer representative.
NOTE: If any internal accessories are to be added to the unit,
install them at the shop if at all practical.
2. Location of the unit must allow service clearance around it.
Clearance of the unit must be given careful consideration. See
Figure 6.
IMPORTANT: Air outlet duct must have 1" clearance to
combustible material downstream from the unit.
3. Check the handling facilities to ensure the safety of personnel
and the unit(s).
4. CAUTION MUST BE TAKEN AT ALL TIMES TO AVOID
PERSONAL INJURIES AND/OR DAMAGE TO EQUIPMENT
5. The unit must be mounted level for proper drainage of water
through the holes in the base pan.
6. The unit must not be exposed to direct roof water runoff.
7. Flexible duct connectors must be of a flame retardant material.
All duct work outside of the structure must be insulated and
weatherproofed in accordance with local codes.
8. Holes through exterior walls must be sealed in accordance with
local codes.
9. All fabricated outdoor ducts should be as short as possible.
CLEARANCES
1. The recommended clearances for single-unit installations are
illustrated in Figures 4 and 6. These minimum requirements are
not only an important consideration when determining unit
placement, but they are also essential to ensure adequate
serviceability, maximum capacity, and peak operating effi-
ciency.
2. Any reduction of the unit clearances indicated in these illustra-
tions may result in condenser coil starvation or the recirculation
of warm condenser air. Actual clearances which appear to be
inadequate should be reviewed with a local engineer.
3. See the unit’s nameplate for the absolute minimum clearance
between the unit and any combustible surface(s).
IMPORTANT:
1. Remove the Flue and Air Inlet Hood with gasket from the return
air section of the unit.
The screws that attach the flue and air inlet hood will be installed
in their proper location at the factory. Therefore, they must be
removed and then used to attach the flue and the air inlet hood.
2. Remove the packaging material from the components and
secure the Flue and Air Inlet Hood with the gasket to the unit
with sheet metal screws as illustrated in Figure 5. See “Firing
Rate Selection” section for additional information.
NOTE: Outdoor air or other requirements during heating
operation that result in supply air temperatures below 80
degrees F or return air temperatures below 50 degrees F may
cause flue gas condensate to form and is to be avoided.
DOWNFLOW APPLICATION -- CURB MOUNTING
1. The Roof Mounting Curb, (field assembled
BAYCURB030,038,033,034A), or a field fabricated curb must
be in place before the unit is hoisted to the roof top.
2. The Roof Mounting Curb (frame) must be installed on a flat,
level section of the roof (maximum of 1/4" per foot pitch)
and provide a level mounting surface for the unit. In
addition, be sure to provide sufficient height above the roof
to prevent water from entering the unit.
NOTE: This unit was shipped for horizontal installation. Con-
vert to downflow per instructions:
Remove covers from the downflow supply and return air open-
ings and place them over the horizontal supply return air
openings (painted side out) and secure with sheet metal screws.
See Figure 5.
3. Be sure the mounting curb spans structural members (trusses)
of the roof, thereby providing sufficient support for the weight of
the unit, the curb, the duct(s), and any factory or field installed
accessories. See Figures 1, 2, 9, 10, and 11.
4. Be sure the hole in the structure for the ducts is large enough
to accommodate the fabricated ducts and the insulation sur-
rounding them. See Figure 6.
Note: If any internal accessories are to be added to the unit,
install them at the shop if at all practical.
5. These units are design certified for outdoor installation. These
units may be installed directly on wood flooring or on Class A,
Class B, or Class C roof covering material. The discharge air
from the condenser fans must be unrestricted for a minimum of
3 feet above the unit.
The air inlet hood in the combustion blower access panel must
have adequate clearance around air openings into the combus-
tion area. See Outline Drawing, Figure 4.
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