Operating instructions

4
*NOTE: Please contact your distributor or our website for the applicable product data book referred to in this manual.
UNIT LOCATION
WARNING
T
O PREVENT POSSIBLE EQUIPMENT DAMAGE, PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH, THE FOLLOWING BULLET POINTS MUST BE OBSERVED
WHEN INSTALLING THE UNIT.
ALL INSTALLATIONS:
• For proper flame pattern within the heat exchanger and
proper condensate drainage, the unit must be mounted level.
• The flue outlet hood must be at least 12 inches from any
opening through which flue gases could enter a building,
and at least three feet above any forced air inlet located
within ten feet. The economizer/manual fresh air intake/
motorized fresh air intake and combustion air inlet mounted
on the unit are not affected by this restriction.
• To avoid possible corrosion of the heat exchanger, do not
locate the unit in an area where the outdoor air (i.e.
combustion air for the unit) will be frequently contaminated
by compounds containing chlorine or fluorine. Common
sources of such compounds include swimming pool
chemicals and chlorine bleaches, paint stripper, adhesives,
paints, varnishes, sealers, waxes (which are not yet dried)
and solvents used during construction and remodeling.
Various commercial and industrial processes may also be
sources of chlorine/fluorine compounds.
• To avoid possible illness or death of the building occupants,
do NOT locate outside air intake device (economizer, manual
fresh air intake, motorized fresh air intake) too close to an
exhaust outlet, gas vent termination, or plumbing vent outlet.
For specific distances required, consult local codes.
• Allow clearances from the enclosure as shown for fire
protection, proper operation, and service access. These
clearances must be permanently maintained.
CAUTION
T
O AVOID PROPERTY DAMAGE, PERSONAL INJURY OR DEATH DUE TO FIRE,
CLEARANCES TO COMBUSTIBLE SURFACES LISTED IN THE FIGURE BELOW
MUST BE OBSERVED.
36"
Maximum
Overhang
48" Minimum
Overhang
36" Side
Clearance
for Servicing
Recommended
Minimum 9" Clearance
to Combustibles
36" Clearance for
Service Required
0" Minimum
Clearance to
Combustibles
Vinyl Coated
Canvas
Connections
Insulated
Return
Duct
Insulated
Supply
Duct
24" Clearance
(Condenser End)
Minimum Clearances for Unit
• The combustion air inlet and flue outlet hoods on the side of
the unit must never be obstructed. If used, do not allow the
economizer/manual fresh air damper/ motorized fresh air
damper to become blocked by snow or debris. In some
climates or locations, it may be necessary to elevate the
unit to avoid these problems.
• When the unit is heating, the temperature of the return air
entering the unit must be between 50° F and 100° F.
• Provisions must be made for adequate combustion and
ventilation air in accordance with Section 5.3, Air for
Combustion and Ventilation, of the National Fuel Gas Code,
NFPA 54/ ANSI Z223.1, or Sections 7.2, 7.3 or 7.4 of CAN/
CSA B149 Installation Codes, or applicable provisions of
the local building codes.
GROUND LEVEL INSTALLATIONS ONLY
• When the unit is installed on the ground adjacent to the
building, a level concrete (or equal) base is recommended.
Prepare a base 47 inches by 49 inches or slightly larger and
3 inches thick.
• The base should also be located where no runoff of water
from higher ground can collect in the unit.
ROOFTOP INSTALLATIONS ONLY
• To avoid possible personal injury or property damage, 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.
• 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.
NOTE: Refer to the Product Data Book applicable to your
model* or the unit Rating Plate for approved duct orientation,
before using down discharge openings.
This unit is approved only for an outdoor installation.
GENERAL INFORMATION
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 NFPA54/ANSI Z223.1 and National
Standard of Canada CAN/CSA-2.3.
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
1430 Broadway
New York, NY 10018