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WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read and understand this installation and
operation manual thoroughly prior to assembly, installation, operation or service to
this appliance.
This heater must be installed and serviced only by a trained gas service technician.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity
of this or any other gas fired appliance.
Failure to comply could result in personal injury, death, fire and/or property damage.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity
of this or any other gas fired appliance.
5.
PRE INSTALLATION SURVEY
It is recommended that a full heating design including heat loss calculation be conducted on the
structure or area to be heated. Heater sizing and placement must consider available mounting
height, sources of greatest heat loss, and the certified clearances to combustibles with respect
to stored material, moveable objects (cranes, vehicles, lifts, overhead doors, etc), sprinkler sys-
tem heads, and other obstructions on the site. Consideration must also be given to vent / duct
placement and the allowable combined lengths of vent and duct. Carefully survey the area to be
heated, and for best results place burner and combustion chamber in the coldest area(s) .
Installation must conform with all local, state, provincial and national code requirements includ-
ing the current latest edition ANSI Z223.1 (NFPA 54) in the U.S.A. and B149.1 installation code
in Canada, for gas burning appliances and equipment. The latest edition Electrical Code ANSI/
NFPA N0 70 in the U.S.A. and PART 1 CSA C22.1 in Canada must also be observed.
The heating system must have gas piping of the correct diameter, length, and arrangement to
function properly. For this reason, a layout drawing is necessary.
6. MOUNTING CLEARANCES
This heater must be mounted with at least the minimum clearances between the heater and
combustibles as shown in FIG-1, TABLE 1, Page 7. It is the installer's responsibility to en-
sure that building materials with a low heat tolerance which may degrade at lower tem-
peratures are protected to prevent degradation. Examples of low heat tolerance materials
include vinyl siding, fabrics, some plastics, filmy materials, some coatings and laminated
finishes, etc.
Ensure adequate clearance around the air intake at the burner to allow sufficient combus-
tion air supply to the heater.
P40U-F / P40U-IF I&O Manual
IM101220
RD: MAR 2014
RL: 4B
10
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