PRODUCT DESIGN
12
Locations and Clearances
NOTE:
To ensure proper condensate drainage, unit must be in-
stalled in a level position.
I
N
INSTALLATIONS
WHERE
THE
UNIT
IS
INSTALLED
ABOVE
GROUND
LEVEL
AND
NOT
SERVICEABLE
FROM
THE
GROUND
(E
XAMPLE
: R
OOF
T
OP
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
N
ATIONAL
F
UEL
G
AS
C
ODE
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.
To prevent property damage, the unit should remain
in an upright position during all rigging and moving
operations. To facilitate lifting and moving when a
crane is used, please the unit in an adequate cable
sling.
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 in-
stallation. 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 applications.
NOTE:
To ensure proper condensate drainage, unit must be
installed in a level position.
The connecting ductwork (Supply and Return) can be connected
for either horizontal or down discharge airflow. In the down dis-
charge applications a matching Roof Curb is recommended .
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.
A 3/4" - 14 NPT drain connector is provided for removal of con-
densate water from the indoor coil. In order to provide proper
condensate flow, do not reduce the drain line size.