Gasmaster GMI 2M, Installation, Operation And Maintenance Manual

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IOM GMI 2M & 2ML Nov 2010.doc
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2.7.2
For connection to gas vents or chimneys, vent installations should be in accordance with Part
7, Venting of Equipment, of the National Fuel Gas Code, ANSI Z223.1, or applicable
provisions of the local building codes.
Vent connectors serving appliances vented by natural draft should not be connected into any
portion of mechanical draft systems operating under positive pressure.
The horizontal portions of the venting system should be supported to prevent sagging. The
methods of and intervals for support should be in accordance with the local code standards.
Furthermore, the following installation requirements should also be satisfied:
I:
Horizontal runs should slope upwards not less than 1/4” per foot (21 mm/m) from
the boiler to the vent terminal.
II:
The vent system should be installed to prevent accumulation of condensate.
III:
Where necessary, the vent system must provide the means for drainage of
condensate.
2.7.3
Vent termination should be in accordance with all applicable local codes. In addition, the
following conditions must be satisfied:
I:
Distances from adjacent public walkways, buildings, windows and building
openings, should be consistent with the National Fuel Gas Code, ANSI Z223.1.
II:
Minimum clearance of 4 feet (1.22 m) horizontally and in no case above or below,
unless a 4-foot (1.22 m) horizontal distance is maintained from electric meters, gas
meters, regulators and relief equipment.
2.7.4
It is recommended to install prefabricated factory-made vent parts each designed to be
assembled with the other without requiring field fabrication.
MANUFACTURER
VENT PART MODEL
MATERIAL
Heat-Fab Inc. Saf-T Vent system Stainless Steel