Mr. Heater HS170NG Operating Instruction
OPERATING INSTRUCTIONS AND OWNER’S MANUAL
HEATSTAR
MODEL
HS170NG
READ INSTRUCTIONS CAREFULLY: Read and follow all instructions.
Place instructions in a safe place for future reference. Do not allow
anyone who has not read these instructions to assemble, light, adjust or
operate the heater.
Model # 150FATNG
FORCED-AIR NATURAL GAS
CONSTRUCTION HEATER
WARNING: If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or loss of life.
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light appliance.
• Extinguish any open ame.
• Shut off gas to appliance.
— Service must be performed by a qualified service agency.
This is an unvented gas-red portable heater. It uses air (oxygen) from the area in which it is used.
Adequate combustion and ventilation air must be provided. Refer to page 3.
70101 Rev. C 04/08ENERCO GROUP, INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-916-3000
WARNING: YOUR SAFETY IS IMPORTANT TO
YOU AND TO OTHERS, SO PLEASE READ THESE
INSTRUCTIONS BEFORE YOU OPERATE THIS HEATER.
GENERAL HAZARD WARNING:
FAILURE TO COMPLY WITH THE PRECAUTIONS AND
INSTRUCTIONS PROVIDED WITH THIS HEATER, CAN
RESULT IN DEATH, SERIOUS BODILY INJURY AND
PROPERTY LOSS OR DAMAGE FROM HAZARDS OF FIRE,
EXPLOSION, BURN, ASPHYXIATION, CARBON MONOXIDE POISONING, AND/OR ELECTRICAL SHOCK.
ONLY PERSONS WHO CAN UNDERSTAND AND FOLLOW
THE INSTRUCTIONS SHOULD USE OR SERVICE THIS
HEATER.
IF YOU NEED ASSISTANCE OR HEATER INFORMATION
SUCH AS AN INSTRUCTIONS MANUAL, LABELS, ETC.
CONTACT THE MANUFACTURER.
WARNING: NOT FOR HOME OR RECREATIONAL
VEHICLE USE
WARNING: FIRE, BURN, INHALATION, AND
EXPLOSION HAZARD. KEEP SOLID COMBUSTIBLES,
SUCH AS BUILDING MATERIALS, PAPER OR
CARDBOARD, A SAFE DISTANCE AWAY FROM THE
HEATER AS RECOMMENDED BY THE INSTRUCTIONS
NEVER USE THE HEATER IN SPACES WHICH DO
OR MAY CONTAIN VOLATILE OR AIRBORNE
COMBUSTIBLES, OR PRODUCTS SUCH AS GASOLINE,
SOLVENTS, PAINT THINNER, DUST PARTICLES OR
UNKNOWN CHEMICALS.
The State of California requires the following warning:
WARNING: COMBUSTION BY-PRODUCTS PRO-
DUCED WHEN USING THIS PRODUCT CONTAIN
CARBON MONOXIDE, A CHEMICAL KNOWN TO THE
STATE OF CALIFORNIA TO CAUSE CANCER AND BIRTH
DEFECTS (OR OTHER REPRODUCTIVE HARM).
CONTENTS
Specifications ....................................................................2
Operating Precautions .......................................................3
Safety Precautions .............................................................3
Odor Fade Warning ..........................................................4
Operating Instructions ...................................................... 4
Storage & Service .............................................................5
Wiring Diagram
Lighting Instructions
Parts List ........................................................................... 7
Exploded View Drawing .................................................... 7
................................................................6
.........................................................5
SPECIFICATIONS
MODEL NO. .................................................HS170NG
GAS TYPE ..................................................Natural Gas
BTU RATING. .......................................150,000 BTU/hr
(43.9 kW)
GAS SUPPLY PRESSURE TO REGULATOR .....................
Maximum: 1/2 psig (4.5 kPa) Minimum: 9”wc (2.3 kPa)
REGULATOR OUT..............................4” WC (0.98 kPa)
ELECTRICAL INPUT ........................115V, 60 Hz, 1Ø, 3a
IGNITION....................... Direct Spark, interrupted type
PRIMARY FLAME CONTROL ... SolidState,10-15 sec. timing
HIGH TEMPERATURE CONTROL
Minimum Ambient Temp. Rating: 0°F (-17.8°C)
FUEL CONSUMPTION ............................... 138 cu-ft/hr
(3.9 cu-m/hr)
FUEL ORIFICE PORT NO.: .................. 18
FUEL ORIFICE PORT SIZE: ..................................1.5MM
HEATED AIR OUTPUT: ......... 450 CFM (12.74 CU M/M)
......................240°F (116°C)
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Enerco Group, Inc. | Force-Air Natural Gas Construction HeaterOperating Instructions and Owner’s Manual
OPERATING PRECAUTIONS
This is a natural gas, direct-red, 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 tting, 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 certied for use as a
construction heater in accordance with ANSI Standard
Z83.7/CGA 2.14-2000. Check with your local re 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
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 exible 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 specied. 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.
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 ow;
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.
Figure 1
VENTILATION: Minimum openings required
Opening Opening
Heater near floor near ceiling
Forced air (HS170NG) 3 ft2 3 ft
Enerco Group, Inc. | Force-Air Natural Gas Construction Heater Operating Instructions and Owner’s Manual
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Figure 2: MINIMUM CLEARANCE: From normal combustible materials
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.
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ODOR FADE WARNING
WARNING
Asphyxiation Hazard
• Do not use this heater for heating human living quarters.
• Do not use in unventilated areas.
• The ow of combustion and ventilation air must not be obstructed.
• Proper ventilation air must be provided to support the combustion air requirements of the heater being used.
• Refer to the specication section of the heater’s manual, heater data plate, or contact the Factory to determine combustion air
ventilation requirements of the heater.
• Lack of proper ventilation air will lead to improper combustion.
• Improper combustion can lead to carbon monoxide poisoning leading to serious injury or death. Symptom of carbon monoxide
poisoning can include headaches dizziness and difficulty in breathing.
FUEL GAS ODOR
LP gas and natural gas have man-made odorants added
specifically for detection of fuel gas leaks.
If a gas leak occurs you should be able to smell the fuel
gas. ANY GAS ODOR IS YOUR SIGNAL TO GO INTO
IMMEDIATE ACTION!
• Do not take any action that could ignite the fuel gas. Do
not operate any electrical switches. Do not pull any power
supply or extension cords. Do not light matches or any other
source of flame. Do not use your telephone.
• Get everyone out of the building and away from the area
immediately.
• Close all fuel supply valves, or the main fuel supply valve
located at the meter if you use natural gas.
• Use your neighbor’s phone and call your fuel gas supplier and
your re department. Do not re-enter the building or area.
• Stay out of the building and away from the area until declared
safe by the firefighters and your fuel gas supplier.
• FINALLY, let the fuel gas service person and the reghters
check for escaped gas. Have them air out the building and
area before you return. Properly trained service people must
repair any leaks, check for further leakages, and then relight
the appliance for you.
ODOR FADING - NO ODOR DETECTED
• Some people cannot smell well. Some people cannot smell
the odor of the man-made chemical added to propane (LP) or
natural gas. You must determine if you can smell the odorant
in these fuel gases.
• Learn to recognize the odor of propane (LP) gas and natural
gas. Local gas dealers will be more than happy to give you a
scratch and sniff pamphlet. Use it to become familiar with the
fuel gas odor.
• Smoking can decrease your ability to smell. Being around
an odor for a period of time can affect your sensitivity to
that particular odor. Odors present in animal confinement
buildings can mask fuel gas odor.
• The odorant in propane (LP) gas and natural gas is
colorless and the intensity of its odor can fade under
some circumstances.
• If there is an underground leak, the movement of gas
through the soil can filter the odorant.
• Alwaysbesensitivetotheslightestgasodor.If you
continue to detect any gas odor, no matter how small, treat
it as a serious leak. Immediately go into action as discussed
previously.
ATTENTION - CRITICAL POINTS TO
REMEMBER!
• Propane (LP) and natural gas has a distinctive odor.
Learn to recognize these odors. (Reference Fuel Gas
Odor and Odor Fading sections above.
• Even If you are not properly trained in the service and repair
of the heater, ALWAYS be consciously aware of the odors of
propane (LP) gas and natural gas.
• If you have not been properly trained in repair and service
of propane (LP) or natural gas then do not attempt to light
heater, perform service or repairs, or make any adjustments
to the heater on the propane (LP) or natural gas fuel system.
• A periodic sniff test around the heater or at the heater’s
joints; i.e. hose, connections, etc., is a good safety practice
under any conditions. If you smell even a small amount of
gas, CONTACT YOUR FUEL GAS SUPPLIER IMMEDIATELY. DO
NOT WAIT!
Heater Elevation Adjustment
This heater is equiped with an elevation adjustment panel
located at the exhaust end of the control box.
1. Do not adjust the heater combustion tube elevation while
heater is running or hot. Adjustments to elevation should
only be made after the heater has cooled to touch.
2. To adjust the heater combustion tube elevation, turn the
adjustment screw knob counterclockwise and lift the
combustion tube to desired position.
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Enerco Group, Inc. | Force-Air Natural Gas Construction HeaterOperating Instructions and Owner’s Manual
OPERATING INSTRUCTIONS
PREPARING FOR OPERATION
1. Check the heater for possible shipping damage. If any is
found, immediately notify the factory.
2. Follow all of the “Precautions”.
3. Assemble the Regulator to the heater fuel inlet with the gas
ow arrow pointed toward the heater. You should use a
pipe sealant compound that is resistant to natural gas. Place
sealant onto the male pipe thread, since this will insure that
no sealant gets into the fuel system. Then screw the male
thread into the inlet and tighten by rotating clockwise.
4. Connect the regulator inlet fitting to the natural gas supply
using an approved exible gas connector, observing all local,
state, etc. codes.
5. Securely tighten all gas connections.
6. Open the natural gas supply valve and check all gas
connections with a soap and water solution. DO NOT USE A
FLAME. This includes the connection between the regulator
assembly and the heater inlet.
7. Connect power cord to well-grounded 115V, 60 Hz, 1Øsource
of power.
8. When using an extension cord, make certain that it is a3-wire
(grounded) cord of proper wire size.
START
1. Slowly open the natural gas supply valve.
2. Set thermostat to full on. Heater will ignite automatically.
3. Set thermostat to desired temperature. Heater will turnoff
and on automatically as the temperature varies in the heater
area.
SERVICING
A hazardous condition may result if a heater is used that has
been modified or is not functioning properly.
When the heater is working properly:
• The ame is contained within the heater.
• The ame is essentially blue with perhaps some
yellow tipping.
• There is no strong disagreeable odor, eye burning or
other physical discomfort.
• There is no smoke or soot internal or external to the
heater.
• There are no unplanned or unexplained shut downs
of the heater.
The parts lists and wiring diagram show the heater as it was
constructed. Do not use a heater which is different from
that shown. In this regard, use only the regulator supplied
with the heater. Do not use alternates. For this heater, the
regulator must be set as shown in “specications”. If there is
any uncertainty about the regulator setting, have it checked.
A heater which is not working right must be repaired, but
only by a trained, experienced service person.
In-warranty products will be repaired with no charge for
either parts or labor. Please include a brief statement
indicating date, place of purchase, the nature of the problem
and proof of purchase.
Out-of-warrranty products will be repaired with a charge for
parts and labor.
STOP
1. Securely close valve on the natural gas supply.
2. Continue to operate heater until all fuel in the hose has
burned.
3. Turn the heater thermostat to “off”. For extended shutdown
or in areas where the temperature is below 0°F,unplug the
heater.
RESTART AFTER SAFETY SHUTDOWN
1. Securely close valve at natural gas supply. Unplug heater.
2. Wait 5 minutes.
3. Restart following “Start” procedure.
MAINTENANCE AND STORAGE
1. The heater should be inspected before each use, and at least
annually by a qualified person.
2. Turn off the gas at the heaters natural gas supply when the
heater is not in use.
Enerco Group, Inc. | Force-Air Natural Gas Construction Heater Operating Instructions and Owner’s Manual
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