PRODUCT DESIGN
15
Locations and Clearances
NOTE:
To ensure proper condensate drainage, unit must be
installed in a level position.
In installations where the unit is installed above ground level
and not serviceable from the ground (Example: Roof Top
installations) the installer must provide a service platform for
the service person with rails or guards in accordance with
local codes or ordinances or in their absence with the latest
edition of the National Fuel Gas Code ANSI Z223.1.
NOTE:
Roof overhang should be no more than 36".
Minimum clearances are required to avoid air recirculation
and keep the unit operating at peak efficiency. A minimum
12 inch clearance is required to the condenser coil.
NOTE:
The flue outlet hood is packaged separately inside
the unit and must be installed prior to operation.
WARNING
TO PREVENT POSSIBLE DAMAGE, THE UNIT SHOULD
REMAIN IN AN UPRIGHT POSITION DURING ALL
RIGGING AND MOVING OPERATIONS. TO FACILITATE
LIFTING AND MOVING IF A CRANE IS USED, PLACE
THE UNIT IN AN ADEQUATE CABLE SLIDE.
IMPORTANT NOTE:
If using bottom discharge with roof
curb, ductwork should be attached to the curb prior to
installing the unit.
Refer to Roof curb Installation Instructions for proper curb
installation. Curbing must be installed in compliance with the
National Roofing Contractors Association Manual.
Lower unit carefully onto roof mounting curb. While rigging
unit, center of gravity will cause condenser end to be lower
than supply air end.
NOTE:
A roof curb can be used to utilize bottom discharge.
APG/GPG Package Units are designed for outdoor installa-
tions only in either residential or light commercial applica-
tions.
NOTE:
To ensure proper condensate drainage, unit must be
installed in a level position.
The connecting ductwork (Supply and Return) can be con-
nected for either horizontal or down discharge airflow. In the
down discharge applications a matching Roof Curb is recom-
mended .
A return air filter must be installed behind the return air grille(s)
or provision must be made for a filter in an accessible location
within the return air duct. The minimum filter area should not
be less than those sizes listed in the Specification Section.
Under no circumstances should the unit be operated without
return air filters.
