6
APPLICATION
A gas fired radiant tube heater may be installed for heating of commercial / industrial /
agricultural non-residential spaces. It is beyond the scope of these instructions to consider
all conditions that may be encountered. Installation must conform with all local building
codes or, in the absence of local codes, to the National Fuel Gas Code, ANSI
Z223.1/NFPA54 in the U.S.A. or the Natural Gas and Propane Installation Code, CSA
B149.1 in Canada. 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.
Installation of a gas fired tube heater must conform to all heating installation design
procedures including clearance to combustibles, connection to the gas and electrical
supplies, and ventilation.
This heater is not for installation in a Class 1 or Class 2 explosive environment, nor a
residence. If installation of this equipment is in question, consult with local authorities
having jurisdiction (Fire Marshall, labour department, insurance underwriter, or others).
Revisions to codes and/or standards may require revision to equipment and installation
procedures. In case of discrepancy, the latest codes, standards, and installation manual
will take priority over prior releases.
WARNING
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. Confer 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 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 (12.5mm) or more for every 10 ft (3 m) of system length. Typically, the greater the
firing rate, the greater the expansion.
Summary of Contents for Middleman EZM-100-50
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Page 25: ...25 Middleman single stage wiring diagram...
Page 26: ...26 Middleman LTH dual input wiring diagram...
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