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Forced-Air Dual-Fuel NOMAD Construction Heater Operating Instructions and OwnerÊs Manual
OPERATING PRECAUTIONS
This is a propane or natural gas, direct-fired, forced air
heater. It's intended use is primarily temporary heating of
buildings under construction, alteration or repair.
Propane is heavier than air. If the fuel leaks from a
connection or fitting, it sinks to the floor, collecting there
with the surrounding air, forming a potentially explosive
mixture. Obviously, fuel leaks should be avoided, so set up
the fuel supply with utmost care. Read the Odor Fade and
Propane warnings included in this manual for additional
information about detecting gas leaks. Leak check new
connections or re-connections with a soap and water
solution and follow all connection instructions herein. Also,
ask your propane dealer or natural gas supply company for
advice on the heater application and supply installation and
ask him to check it if there are any questions.
This heater was designed and certified for use as a
construction heater in accordance with ANSI Standard
Z83.7/CSA 2.14. Check with your local fire safety authority
if you have any questions about your applications. Other
standards govern the use of fuel gases and heat producing
products in specific applications. Your local authority can
advise you about these.
Direct-Fired means that all of the combustion products enter
the heated space. Even though this heater operates very
close to 100 percent combustion efficiency, it still produces
small amounts of carbon monoxide. Carbon monoxide
(called CO) is toxic. We can tolerate small amounts but not a
lot. CO can build up in a heated space and failure to provide
adequate ventilation could result in death. The symptoms of
inadequate ventilation are:
• headache
• dizziness
• burning eyes and nose
• nausea
• dry mouth or sore throat
So, be sure to follow advice about ventilation in these
operating instructions.
Forced Air means that a blower or fan pushes the air
through the heater. Proper combustion depends upon this
air flow; therefore, the heater must not be revised, modified
or operated with parts removed or missing. Likewise, safety
systems must not be circumvented or modified in order to
operate the heater.
When the heater is to be operated in the presence of other
people the user is responsible for properly acquainting those
present with the safety precautions and instructions, and of
the hazards involved.
SAFETY PRECAUTIONS
1. Check the heater thoroughly for damage. DO NOT
operate a damaged heater.
2. DO NOT modify the heater or operate a heater which has
been modified from its original condition.
3. Use only fuel types for which the heater has been
certified.
4. If using propane use only VAPOR WITHDRAWAL type
propane supply. If there is any question about vapor
withdrawal, ask your propane dealer.
5. Mount the propane cylinders vertically (shutoff valve
up). Secure them from falling or being knocked over and
protect them from damage.
6. Locate propane containers at least (USA) 7 ft. (2.13m),
(Canada) 10 ft. (3m) from the heater and do not direct
exhaust toward containers.
7. IMPORTANT Use only the hose and regulator assembly
provided with the heater. Inspect hose assembly before
each use of the heater. If there is excessive abrasion or
wear, or hose is cut, replace with hose assembly listed on
parts list in this manual before using heater.
8. For indoor or outdoor use where adequate ventilation has
been provided. Minimum openings of 1/2 sq. ft. (.046
m²) near the floor and 1/2 sq. ft. (.046 m²) near the
ceiling (also see "Operating Precautions").
9. If at any time gas odor is detected, IMMEDIATELY
DISCONTINUE operation until the source of gas has been
located and corrected. Read enclosed Odor fade and
Propane information for additional information about
detecting propane or natural gas leaks.
10. While this heater is designed to withstand a reasonable
about of harsh weather. It is best to install the heater such
that it is not directly exposed to water spray, rain and/or
dripping water.
11. Maintain minimum clearance from normal combustible
material like paper, canvas, plastic tarpaulins or similar
coverings and secure them to prevent flapping or
movement due to wind action.
12. Due to the high surface and exhaust temperatures, adults
and children must observe clearances to avoid burns or
clothing ignition.
13. Operate only on a stable, level surface.
14. For use with only approved duct lengths and materials.
15. Use only the electrical power specified. The electrical
connection and grounding must comply with National
Electrical Code - ANSI/NFPA 70 (USA) and CSA C22.1
Canadian Electrical Code, Part 1 (Canada).
16. Use only a properly grounded 3-prong receptacle or
extension cord (6 ft (1.83m) in length minimum).
17. Do not move, handle or service while hot or burning.
18. Use only in accordance with local codes or, in the absence
of local codes, with the Standard for the Storage and
Handling of Liquefied Petroleum Gases ANSI/NFPA 58 and
CSA B149.1, Natural Gas and Propane Installation Code.