Gasmac GARAGEMAC GM-40S, Installation & Operating Instructions Manual

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7
WARNING
FLAMMABLE/EXPLOSIVE/CORROSIVE VAPORS
Where there is the possibility of exposure to combustible airborne materials or vapour,
consult the local fire inspector's office, the fire insurance carrier or other applicable
authorities for approval of the proposed installation.
Do not use in an atmosphere containing halogenated hydrocarbons or other corrosive
chemicals. Some compounds in the environment can cause an accelerated rate of
corrosion to the heat exchanger.
The heater manufacturer cannot anticipate all types and chemical composition of
possible contaminants at project sites. Consult with project site safety, health and
engineering staff and/or local authorities having jurisdiction such as the Fire Marshall
and Department of Labour for possible contaminants and any conflict with the
installation of hot surface heating equipment.
WARNING
HEATER EXPANSION
It is a normal condition that during heat-up and cool-down a tube heater will expand and
contract. Allowances for heater expansion must be made in the gas connection, venting
and combustion air ducting. Consider that the heater will expand in length as much as
½ inch (12.5 mm) or more for every 10 ft (3 m) of system length. Typically, the greater
the firing rate, the greater the expansion. Improper installation, alteration, or adjustment
can result in property damage, injury or death.
WARNING
GAS CONNECTION
Improper installation, connection, or adjustment can result in property damages, toxic
gases, asphyxiation, fire, explosion, injury and/or death. Using an approved flexible gas
connector in the USA and Rubber Type 1 hose connector in Canada, the gas supply to
the heater must be connected and tested in accordance with all local, state, provincial,
and national codes (ANSI Z223.1/NFPA 54 in USA: B149.1 in Canada) and as indicated
in the manual. See:
GAS SUPPLY, HEATER EXPANSION, AND FLEXIBLE GAS
CONNECTION.