3
Enerco Group, Inc. | Force-Air Natural Gas Construction Heater
Operating Instructions and Owner’s Manual
OpERATING pRECAUTIONS
This is a natural gas, direct-fired, forced air heater. It’s
intended use is primarily temporary heating of buildings
under construction, alteration or repair.
If natural gas leaks from a connection or fitting, it can mix
with the surrounding air, forming a potentially explosive
mixture. Obviously, natural gas leaks should be avoided,
so set up the natural gas supply with utmost care. Read
enclosed Odor Fade Sheet for additional information about
detecting natural gas leaks. Leak check new connections or
reconnections with a soap and water solution and follow all
connection instructions herein. Also, ask your natural gas
dealer for advice on the natural gas 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/CGA 2.14-2000. 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
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 natural gas.
4. Protect all heater natural gas connections from traffic or
damage.
5.
IMpORTANT
Use only the regulator assembly provided with
the heater. Inspect flexible natural gas connections before each
use of the heater. If there is excessive abrasion or wear, or
connection is damaged in any way, replace with a connection
that meet all local, state, etc. codes and requirements.
6. For indoor use only. Area must be well ventilated. Figure1. (also
see “Operating Precautions”).
7.
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 Sheet for
additional information about detecting gas leaks.
8. Install the heater such that it is not directly exposed to water
spray, rain and/or dripping water.
9. Maintain minimum clearance from normal combustible material
(like paper). Figure 2.
10. Due to the high surface and exhaust temperatures, adults and
children must observe clearances to avoid burns or clothing
ignition.
11. Operate only on a stable, level surface.
12. Do not use with duct work. Do not restrict inlet or exit.
13. Use only the electrical power specified. The electrical
connection and grounding must comply with National Electrical
Code - ANSI/NFPA 70 (USA) and CSA C22.1Canadian Electrical
Code, Part 1 (Canada).
14. Use only a properly grounded 3-prong receptacle or xtension
cord.
15. Do not move, handle or service while hot or burning.
16. Use only in accordance with local codes or, in the absence of
local codes, with the National Fuel GasCode, ANSI Z223.1/NPFA
54 or the CSA B149.1,Natural Gas and Propane Installation
Code.
Opening
Opening
Heater
near floor
near ceiling
Forced air (
HS170NG
)
3 ft
2
3 ft
2
Clearance
Forced Air 150FATNG
From floor .......................................................0 ft
From outlet .....................................................6 ft
From sides ......................................................2 ft
From top .........................................................3 ft
Locate 10 ft. from canvas or plastic tarpaulins or similar
coverings and secure them to prevent flapping or movement
due to wind action.
Figure 1
VENTILATION: Minimum openings required
Figure 2:
MINIMUM CLEARANCE: From normal combustible materials
