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3.0
Installation
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Unit Start-up (Commissioning)
Unit Start-up (Commissioning)
Improper installation, adjustment, alteration, service or maintenance can cause property
damage, serious injury, or death. This heater must be installed and serviced by a
trained gas installation and service personnel only.
Shock Hazard.
Before attempting to perform any service or maintenance, turn electrical power to unit
OFF at disconnect switch.
Pre-Start Up Checks
Verify that the installation conforms to all of the specifications of the manual, as well as with local,
state, national, and provincial codes. In absence of local codes, the unit heater must be installed
according to the current National Fuel Gas Code ANSI Z223.1 (NFPA 54). In Canada, the
installation must conform to the current National Standard of Canada CSA-B149 Sections 1.
Prior to starting up the unit, verify that:
9 The gas type listed on the rating label matches that of your application.
9 The gas connections have been purged of air and properly leak tested.
9 The voltage type and frequency listed on the rating label matches that of your application.
9 The unit is properly grounded as per the National Electrical Code, ANSI/NFPA 70 or
Canadian Electrical code CSA C22.1 Part 1.
9 The unit is properly mounted to a permanent structure able to bear the weight of the unit.
9 The proper mounting height is observed for the application.
9 All clearance to combustible distances or service clearances are maintained.
9 The unit is properly isolated or installed to prevent excessive vibration.
9 The unit is level horizontally.
9 Venting is properly installed in accordance with this manual and any applicable codes.
9 Combustion air supply is sufficient to support proper operation at all times.
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Pre-Start Up Checks
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WARNING
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CAUTION
50
DET3
Series
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