Intertek A/GPD1424 Series, Installation Instructions Manual

Page: 7 / 36

7
R
OOFTOP
I
NSTALLATIONS
O
NLY
:
NOTE: To ensure proper condensate drainage, unit must be installed in
a level position.
• To avoid possible property damage or personal injury, the roof must
have sufficient structural strength to carry the weight of the unit(s)
and snow or water loads as required by local codes. Consult a
structural engineer to determine the weight capabilities of the
roof.
• The unit may be installed directly on wood floors or on Class A,
Class B, or Class C roof covering material.
• To avoid possible personal injury, a safe, flat surface for service
personnel should be provided.
R
OOF
C
URB
I
NSTALLATIONS
O
NLY
:
• Sufficient structural support must be determined prior to locating
and mounting the curb and package unit.
• Ductwork must be constructed using industry guidelines. The duct work must be
placed into the roof curb before mounting the package unit.
• Curb insulation, cant strips, flashing and general roofing material are furnished by
the contractor.
GENERAL INFORMATION
This unit is approved for outdoor installation ONLY. To assure that your unit operates
safely and efficiently, it must be installed, operated, and maintained in accordance with
these installation and operating instructions, all local building codes and ordinances, or
in their absence, with the latest edition of the National Fuel
Gas Code NFPA 54/ANSI Z223.1 and National Standard of Canada
CAN/CSA B149 Installation Codes.
The heating and cooling capacities of the unit should be greater
than or equal to the design heating and cooling loads of the
area to be conditioned. The loads should be calculated by an
approved method or in accordance with A.S.H.R.A.E. Guide or
Manual J - Load Calculations published by the Air Conditioning
Contractors of America.
Obtain from:
American National Standards Institute
25 West 43rd street, 4th Floor
New York, NY 10036
Rooftop Installation
Roof Curb Installation