Combat UHA[X][S]-Series Axial Fan Tubular Unit Heaters ® Equipment Specifications 1.800.828.7450 www.rg-inc.
GAS-FIRED UNIT HEATER GUIDE SPECIFICATION PART 1 GENERAL Provide gas-fired unit heaters, designed and manufactured for indoor use. 1.1 SECTION INCLUDES A. Unit Heater B. Controls 1.2 REFERENCES A. American National Standards Institute (ANSI) / Canadian Standards Association (CSA): Establish requirements applicable to construction, certification and installation of unit heaters. a. Standard ANSI Z83.8 / CSA 2.6 “Gas Unit Heater and GasFired Duct Furnaces” (latest edition) B.
2.5 COMBUSTION AIR AND VENTING COMPONENTS A. Vent Box: The vent box shall be of [aluminized steel] [409 stainless steel]. B. Flue Fan: Each unit shall have a factory-installed flue fan to draw combustion gases through the heat exchanger and into the flue venting. No unit shall be gravity vented. The flue fan shall be internally mounted by the manufacturer. No combustion draft inducers shall be mounted outside of heater cabinet. C.
PART 3: EXECUTION 3.1 INSTALLATION A. General: Install gas-fired unit heaters as indicated, in accordance with manufacturer's installation instructions and in compliance with applicable codes and approvals. Allow adequate space for combustion air supply, circulation (axial) fan air supply, servicing or removal of the unit without disturbing other equipment.
