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UHA STANDARD UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
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SECTION 5: NATIONAL STANDARDS AND APPLICABLE CODES
5.1 Gas Codes
The type of gas appearing on the name plate
must be the type of gas used. Installation must
comply with national and local codes and
requirements of the local gas company.
United States: Refer to NFPA 54/ANSI Z223.1 -
latest revision, National Fuel Gas Code.
Canada: Refer to CSA B149.1 Natural Gas and
Propane Installation Code.
5.2 Aircraft Hangars
Installation in aircraft hangars must be in
accordance with the following codes:
United States: Refer to Standard for Aircraft
Hangars, NFPA 409 - latest revision.
Canada: Refer to Standard CSA B149.1 Natural
Gas and Propane Installation Code.
• In aircraft storage and servicing areas, heaters
shall be installed at least 10' (3 m) above the
upper surface of wings or of engine enclosures
of the highest aircraft which may be housed in
the hangar. The measurement shall be made
from the wing or engine enclosure (whichever is
higher from the floor) to the bottom of the heater.
• In shops, offices and other sections of aircraft
hangars communicating with aircraft storage or
servicing areas, heaters shall be installed not
less than 8' (2.4 m) above the floor.
• Suspended or elevated heaters shall be so
located in all spaces of aircraft hangars that they
shall not be subject to injury by aircraft, cranes,
movable scaffolding or other objects. Provisions
shall be made to assure accessibility to
suspended heaters for recurrent maintenance
purposes.
5.3 Parking Structures and Repair Garages
Installation in garages must be in accordance
with the following codes:
United States: Standard for Parking Structures
NFPA 88A - latest revision or the Code for Motor
Fuel Dispensing Facilities and Repair Garages,
NFPA 30A - latest revision. Canada: Refer to
CSA B149.1 Natural Gas and Propane
Installation Code.
• In accordance with the Standard for Parking
Structures NFPA 88A, heaters must be located
a minimum of 18" (50 cm) below the floor-ceiling
assembly or 18" (50 cm) above the floor.
• In accordance with the Code for Motor Fuel
Dispensing Facilities and Repair Garages,
NFPA 30A - latest revision, heaters must not be
installed less than 8' (2.4 m) above the floor.
5.4 Electrical
The heater must be electrically grounded in
accordance with the following codes:
United States: Refer to National Electrical
Code
®
, NFPA 70 - latest revision. Wiring must
conform to the most current National Electrical
Code
®
, local ordinances and any special
diagrams furnished.
Canada: Refer to Canadian Electrical Code,
CSA C22.1 Part 1 - latest revision.
5.5 Venting
The venting must be installed in accordance
with the requirements within this manual and
the following codes:
United States: Refer to NFPA 54/ANSI Z223.1 -
latest revision, National Fuel Gas Code.
Canada: Refer to CSA B149.1 Natural Gas and
Propane Installation Code.