Trane Gas Unit Heaters Wartungshandbuch
16
GTND-SVX01B-EN
Installation: Mechanical
Since the unit is equipped with an automatic gas ignition
system, the unit heaters must be installed such that the gas
ignition control system is not directly exposed to water
spray, rain, or dripping water.
system, the unit heaters must be installed such that the gas
ignition control system is not directly exposed to water
spray, rain, or dripping water.
Additional Requirement for Canadian
Installations
Installations
Refer to specification table and installation manual for
proper usage.
proper usage.
The following instructions apply to Canadian installations
in addition to installation and operating instructions:
in addition to installation and operating instructions:
1.
Installation must conform with local building codes, or
in the absence of local codes, with current CSA B149.1,
“Installation Codes for Natural Gas Burning
Appliances and Equipment”, or CSA B149.2,
“Installation Codes for Propane Gas Burning
Appliances and Equipment”.
in the absence of local codes, with current CSA B149.1,
“Installation Codes for Natural Gas Burning
Appliances and Equipment”, or CSA B149.2,
“Installation Codes for Propane Gas Burning
Appliances and Equipment”.
2. Any reference to U. S. standards or codes in these
instructions are to be ignored, and the applicable
Canadian standards or codes applied.
Canadian standards or codes applied.
Note: Location of unit heaters is related directly to the
selection of sizes. Basic rules are as follows:
Mounting Height.
Mounting height varies by unit size:
Unit sizes 30–120: If the unit heater is installed in a garage,
it must be installed with a minimum clearance above the
floor of 18 inches (457 mm).
it must be installed with a minimum clearance above the
floor of 18 inches (457 mm).
Unit sizes 150–400: Unit heaters equipped with standard
fan guards must be installed at a minimum of 8 feet (2.4 m)
above the floor, measured to the bottom of the unit. At
heights above 8 feet (2.4 m), less efficient air distribution
will result. If a unit is to be mounted below 8 feet (2.4 m)
from the floor, an OSHA approved fan guard is required on
the unit.
fan guards must be installed at a minimum of 8 feet (2.4 m)
above the floor, measured to the bottom of the unit. At
heights above 8 feet (2.4 m), less efficient air distribution
will result. If a unit is to be mounted below 8 feet (2.4 m)
from the floor, an OSHA approved fan guard is required on
the unit.
Aircraft Hangers.
Unit sizes 150–400: Unit heaters must
be installed in aircraft hangars as follows: in aircraft
hangars, unit heaters must be at least 10 feet (3.0 m) above
the upper surface of wings or engine enclosures of the
highest aircraft to be stored in the hangar, and 8 feet
(2.4 m) 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
hangars, unit heaters must be at least 10 feet (3.0 m) above
the upper surface of wings or engine enclosures of the
highest aircraft to be stored in the hangar, and 8 feet
(2.4 m) 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.
acceptable to the enforcing authorities.
Public Garages.
Unit sizes 150–400: In repair garages,
unit heaters must be located at least 8 feet (2.4 m) above
the floor. Refer to the latest edition of NFPA 88B, Repair
Garages.
the floor. Refer to the latest edition of NFPA 88B, Repair
Garages.
In parking structures, unit heaters must be installed so that
the burner flames are located a minimum of 18 inches
(457 mm) above the floor or protected by a partition not
less than 18 inches (457 mm) high. However, any unit
heater mounted in a parking structure less than 8 feet
(2.4 m) above the floor must be equipped with an OSHA
approved fan guard. Refer to the latest edition of
NFPA 88A, Parking Structures.
the burner flames are located a minimum of 18 inches
(457 mm) above the floor or protected by a partition not
less than 18 inches (457 mm) high. However, any unit
heater mounted in a parking structure less than 8 feet
(2.4 m) 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 CSA-B149 “Installation Codes for Gas
Burning Appliances and Equipment.”
latest edition of CSA-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 impede the warm air distribution patterns.
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 impede the warm air distribution patterns.
NOTICE:
Equipment Damage!
Do not install unit heaters in corrosive or flammable
atmospheres! Premature failure of, or severe damage to
the unit could result! Avoid locations where extreme
drafts can affect burner operation. Unit heaters must
not be installed in locations where air for combustion
would contain chlorinated, halogenated or acidic
vapors. If located in such an environment, premature
failure of the unit could occur!
atmospheres! Premature failure of, or severe damage to
the unit could result! Avoid locations where extreme
drafts can affect burner operation. Unit heaters must
not be installed in locations where air for combustion
would contain chlorinated, halogenated or acidic
vapors. If located in such an environment, premature
failure of the unit could occur!
NOTICE:
Maintain Minimum Thermostat Setting!
Unit heaters should not be installed to maintain low
temperatures and/or freeze protection of buildings. A
minimum of 50°F (10°C) thermostat setting must be
maintained. If unit heaters are operated to maintain
lower than 50°F (10°C), hot flue gases are cooled inside
the heat exchanger to a point where water vapor (a flue
gas by-product) condenses onto the heat exchanger
walls. The result is a mildly corrosive acid that
prematurely corrodes the aluminized heat exchanger
and can actually drip water down from the unit heater
onto the floor surface. Additional unit heaters should
be installed if a minimum 50°F (10°C) thermostat
setting cannot be maintained. Failure to follow these
recommendations could result in equipment or
property damage.
temperatures and/or freeze protection of buildings. A
minimum of 50°F (10°C) thermostat setting must be
maintained. If unit heaters are operated to maintain
lower than 50°F (10°C), hot flue gases are cooled inside
the heat exchanger to a point where water vapor (a flue
gas by-product) condenses onto the heat exchanger
walls. The result is a mildly corrosive acid that
prematurely corrodes the aluminized heat exchanger
and can actually drip water down from the unit heater
onto the floor surface. Additional unit heaters should
be installed if a minimum 50°F (10°C) thermostat
setting cannot be maintained. Failure to follow these
recommendations could result in equipment or
property damage.