Trane GHND-SVX01A-EN - Manual (Page 12)

12 High Efficiency Propeller Fan Gas Unit Heater •
GHND-SVX01A-EN
Installation
MOUNTING HEIGHT: Unit Heaters must be installed at a minimum of 8 feet (2.4m)
above the floor, measured to the bottom of the unit. At heights above 8 feet (2.4m), less
efficient air distribution will result. Occasionally unit heaters must be mounted at
heights of 12 to 16 feet (3.7 to 4.9m) in order to clear obstacles. When this is the case, it
is advisable to use centrifugal blower unit heaters.
AIRCRAFT HANGARS: Unit Heaters must be installed in aircraft hangars and public
garages as follows: In aircraft hangars, unit heaters must be at least 10 feet (3.1m)
above the upper surface of wings or engine enclosures of the highest aircraft to be
stored in the hangar and 8 feet (2.4m) above the floor in shops, offices and other
sections of the hangar where aircraft are not stored or housed. Refer to current ANSI/
NFPA No. 409, Aircraft Hangars. In Canada, installation is suitable in aircraft hangars
when acceptable to the enforcing authorities.
PUBLIC GARAGES: In repair garages, unit heaters must be at least 8 feet (2.4m) above
the floor. Refer to the latest edition of NFPA No. 88B, Repair Garages.
In parking structures, unit heaters must be installed so that the burner flames are
located a minimum of 18 inches (457mm) above the floor or protected by a partion not
less than 18 inches (457mm) high. However, any unit heater mounted in a parking
structure less than 8 ft. (2.4m) above the floor must be equipped with an OSHA
approved fan guard. Refer to the latest edition of NFPA 88A, Parking Structures.
In Canada, installation must be in accordance with the latest edition of CGA-B149
“Installation Codes for Gas Burning Appliances and Equipment.”
AIR DISTRIBUTION: Direct air towards areas of maximum heat loss. When multiple
heaters are involved, circulation of air around the perimeter is recommended where
heated air flows along exposed walls. Satisfactory results can also be obtained where
multiple heaters are located toward the center of the area with heated air directed
toward the outside walls. Be careful to avoid all obstacles and obstructions which could