NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
OPERATING INSTRUCTIONS AND OWNER’S MANUAL
FORCED AIR PROPANE
CONSTRUCTION HEATER
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 #
MH60CRFAV
LANGUAGES INCLUDED:
•ENGLISH
•FRENCH
•SPANISH
WARNING:
— Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any
other appliance.
— An LP cylinder not connected for use shall not be stored 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 flame.
•Shut off gas to appliance.
— Service must be performed by a qualified service agency.
This is an unvented gas-fired 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.
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.
www.mrheater.com• 800-251-0001
NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
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: Fuels used in liquefied propane
gas appliances, and the products of combustion of such
fuel, can expose you to chemicals including benzene, which
is known to the state of California to cause cancer and
cause birth defects or other reproductive harm, for more
information go to www.P65Warnings.ca.gov
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.
WARNING:THIS PRODUCT CAN EXPOSE
YOUTOCHEMICALSINCLUDINGLEADANDLEAD
COMPOUNDS, WHICH ARE KNOWN TO THE STATE
OFCALIFORNIATOCAUSECANCERANDBIRTH
DEFECTS OR OTHER REPRODUCTIVE HARM. FOR MORE
INFORMATION VISIT WWW.P65WARNINGS.CA.GOV
Type of Gas: ............... For use with Propane Only
Gas Supply Pressure
to regulator
to regulator ............. Min.: 5 psig (34.5 kPa)
regulator out .......... 11.24" W.C. (2.8 kPa)
Electrical Input: ........... 115V, 60 Hz, 1Ø, 3a
Ignition: ...................... Direct Spark
Primary
Flame Control: ..........Thermocouple Operated Gas Valve
High Temperature
Control: .................... 240°F (116°C)
Min. Ambient Temp. Rating 0°F (-17.8°C)
............. Max.: Bottle Pressure
Min. Operating Voltage: 100V
Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
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SPECIFICATIONS
Model:MH60CRFAV
Rating:30,000 - 60,000 Btu/Hr
(8.8 - 17.6 kW)
Fuel Consumption:1.4 - 2.8 #/hr
(0.64 - 1.28kg/hr)
Fuel Orifice Port No.:10
Fuel Orifice Port Size:0.0338"
(0.86 mm)
Heated Air Output:183 cfm
(5.3 cmm)
Average Air Temp. Rise:200°F (111°C)
OPERATING PRECAUTIONS
This is a propane, 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 propane leaks from a connection or
fitting, it sinks to the floor, collecting there with the surrounding
air, forming a potentially explosive mixture. Obviously, propane
leaks should be avoided, so set up the propane supply with
utmost care. Read enclosed Odor Fade and Propane Sheet for
additional information about detecting propane leaks. Leak check
new connections or reconnections with a soap and water solution
and follow all connection instructions herein. Also, ask your
propane dealer for advice on the propane 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 Z83.7/CGA 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 propane gas.
4.Use only VAPOR WITHDRAWAL 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. Match the color stripe on the
hangtag attached to the hose assembly with the color on
the label located near the propane inlet fitting on 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 before using heater.
8.For either indoor or outdoor use. Adequate ventilation must
be provided. Figure 1. (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
Sheet for additional information about detecting propane
leaks.
10. Maintain minimum clearance from normal combustible
material (like paper). Figure 2.
11. Due to the high surface and exhaust temperatures, adults and
children must observe clearances to avoid burns or clothing
ignition.
12. Operate only on a stable, level surface.
13. Do not use with duct work. Do not restrict inlet or exit.
14. 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).
Use only a properly grounded 3-prong receptacle or
15.
extension cord.
16. Do not move, handle or service while hot or burning.
17. 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.
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.
Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
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Figure 1
VENTILATION: Minimum openings required
Opening Opening
Heater near floor near ceiling
Forced air (60) ..................... 1 ft2 .......................... 1 ft
Figure 2
MINIMUM CLEARANCE: From normal combustible material
Clearance 60 Forced Air
From floor ...................................0 ft
From outlet
From sides
From top
Locate 10 ft. from canvas or plastic tarpaulins or similar
coverings and secure them to prevent flapping or movement
due to wind action.
..................................6 ft
...................................2 ft
.....................................3 ft
2
ODOR FADE WARNING
WARNING
Asphyxiation Hazard
• Do not use this heater for heating human living
quarters.
• Do not use in unventilated areas.
• The flow 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 specification 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. Since Propane (LP) is heavier than air you should
smell for the gas odor low to the floor. 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 disconnect
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 propane (LP) gas tank or cylinder fuel supply
valves, or the main fuel supply valve located at the meter
if you use natural gas.
• Propane (LP) gas is heavier than air and may settle in low
areas. When you have reason to suspect a propane leak,
keep out of all low areas.
• Use your neighbor’s phone and call your fuel gas supplier
and your fire 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
firefighters 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 propane (LP) 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.
• Propane (LP) gas odor may differ in intensity at different
levels. Since Propane (LP) gas is heavier than air, there
may be more odor at lower levels.
• Always be sensitive to the slightest gas odor. 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) gas has a distinctive odor. Learn to
recognize these odors. (Reference Fuel Gas Odor and
Odor Fading sections above.
• Even If you are not property 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) gas then do not attempt to
light heater, perform service or repairs, or make any
adjustments to the heater on the propane (LP) 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!
Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
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OPERATING INSTRUCIONS
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.Connect the POL fitting of hose and regulator assembly to the
propane cylinder by rotating the POL nut counterclockwise
into the propane cylinder's valve outlet and securely tighten
with a wrench.
4.Connect the hose to the heater by rotating the hose fitting
clockwise.
5.Securely tighten all gas connections.
6.Open the cylinder's gas valve and check all gas connections
with a soap and water solution. DO NOT USE A FLAME.
7.Connect power cord to well-grounded 115V, 60 Hz, 1Ø
source of power.
8.When using an extension cord, make certain that it is a 3-wire
(grounded) cord of proper wire size.
START
1.Before heater ignition, always allow heater fan (blower) to run
for 20 seconds to purge fuel.
2.Slowly open the main valve at propane cylinder.
3.Depress the fuel valve button to light the heater.
4.After the heater lights, keep the gas valve button depressed
for 15 seconds then release and the heater will continue to
operate.
5.Adjust burn rate by setting control knob to desired level.
6.Igniter continues to fire as long as power cord is plugged in.
a) Igniter sparks continually.
7.No thermostat usable with these units.
STOP
1.Securely close valve on the propane cylinder.
2.Continue to operate heater until all fuel in the hose has
burned.
3.Unplug the power cord.
RESTART AFTER SAFETY SHUTDOWN
1.Securely close valve at propane cylinder. 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.Before each use, check the soft "O" ring seal at the bullnose
of the POL fitting. If the "O" ring is cut, scuffed, or otherwise
damaged, replace it with part number 73786.
3.Turn off the gas at the LP-gas supply cylinder(s) when the
heater is not in use.
4.When the heater is to be stored indoors, the connection
between the LP-gas supply cylinder(s) and the heater must
be disconnected and the cylinder(s) removed from the heater
and stored out of doors and in accordance with Chapter 5 of
the standard for Storage and Handling of Liquefied Petroleum
Gases ANSI/NFPA 58 and CSA B149.1, Natural Gas and
Propane Installation Code.
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 flame is contained within the heater.
•The flame 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 hose, regulator and cylinder
connection fitting (called a POL fitting) supplied with the heater.
IMPORTANT Match the color stripe on the hangtag attached to
the hose assembly with the color on the label located near the
propane inlet fitting on the heater. Do not use alternates. For this
heater, the regulator must be set as shown in "specifications".
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.
HEATER ELEVATION ADJUSTMENT
This heater is equipped 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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Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
SIZE AND CAPACITY OF PROPANE
CYLINDERS REQUIRED
The charts below show the approximate size of the cylinder
required for these heaters. To use the chart:
1. Select the lowest air temperature expected (at the bottom of the
chart).
2. Move straight up to time of operation desired (left side of chart).
3. Read the cylinder size required.
All heaters should have:
full cylinders
good air circulation
no frost on cylinders
60,000 BTU/HR (16.1 kW)
DURATION OF OPERATION MAX- HOURS
AIR TEMPERATURE -
o
F (oC)
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Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
WIRING DIAGRAMS
If any original wiring as supplied with the heater, must be replaced, It must be replaced with
Type AWG 105° C wire or its equivalent, except as indicated (Type SF 2.200, **SGI-250° C)
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Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
Forced Air Propane Construction Heater • Model #MH60CRFAV
1920901 Capacitor1
2020904Orifice1
2120907Retaining Nut1
2220936Ignition Control Module1
2320909
Thermoelectric Valve W/
Integrated Piezo Ignitor
2420902Variable Control Knob1
2520912Height Adjustment knob1
2620918Base Front Panel1
2720916Base Right Panel1
2820919Base Rear Panel1
2920938Electric Supply Cord1
3020921Height Adjustment Foot1
3120920Base Bottom Panel1
3220917Base Left Panel1
3320942Hose & Reg Assy. 10'1
1
1
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Operating Instructions and Owner’s ManualMr. Heater, Inc.| Forced Air Propane Construction Heater
NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
WARNING
Air Quality Hazard
• Do not use this heater for heating human living quarters.
• Use of direct-fired heaters in the construction environment can result in exposure to levels of CO, CO2, and NO2 considered
to be hazardous to health and potentially life threatening.
• Do not use in unventilated areas.
• Know the signs of CO and CO2 poisoning.
Ǟ Headaches, stinging eyes Ǟ Dizziness, disorientation Ǟ Difficulty breathing, feels of being suffocated
• Proper ventilation air exchange (OSHA 29 CFR 1926.57) to support combustion and maintain acceptable air quality shall be
provided in accordance with OSHA 29 CFR Part 1926.154, ANSI A10.10 Safety Requirements for Temporary and Portable
Space Heating Devices and Equipment used in the Construction Industry or the Natural Gas and Propane Installation Codes
CSA B149.1.
NEVER LEANEVER LEANEVER LEAVE THE HEAVE THE HEAVE THE HEATER UNATER UNATER UNATTENDED WHILE BURNING!TTENDED WHILE BURNING!TTENDED WHILE BURNING!
Model #
OPERATING INSTRUCTIONS
MH60CRFAV
AND OWNER’S MANUAL
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.
WARNING: USE ONLY MANUFACTURER’S REPLACEMENT PARTS. USE OF
ANY OTHER PARTS COULD CAUSE INJURY OR DEATH. REPLACEMENT PARTS ARE
ONLY AVAILABLE DIRECT FROM THE FACTORY AND MUST BE INSTALLED BY A
QUALIFIED SERVICE AGENCY.
PARTS ORDERING INFORMATION:
PURCHASING: Accessories may be purchased at any Mr. Heater local dealer or direct
from the factory
FOR INFORMATION REGARDING SERVICE
Please call Toll-Free 800-251-0001 • www.mrheater.com
Our office hours are 8:00 AM – 5:00 PM, EST, Monday through Friday.
Please include the model number, date of purchase, and description of problem in all
communication.
LIMITED WARRANTY
The company warrants this product to be free from imperfections in material or workmanship,
under normal and proper use in accordance with instructions of The Company, for a period
of one year from the date of delivery to the buyer. The Company, at its option, will repair or
replace products returned by the buyer to the factory, transportation prepaid within said one
year period and found by the Company to have imperfections in material or workmanship.
If a part is damaged or missing, call our Technical Support Department at 800-251-0001.
Address any Warranty Claims to the Service Department, Mr. Heater, Inc., 4560 W. 160TH
ST., CLEVELAND, OHIO 44135. Include your name, address and telephone number and include
details concerning the claim. Also, supply us with the purchase date and the name and address
of the dealer from whom you purchased our product.
The foregoing is the full extent of the responsibility of the Company. There are no other
warranties, express or implied. Specifically there is no warranty of fitness for a particular
purpose and there is no warranty of merchantability. In no event shall the Company be liable
for delay caused by imperfections, for consequential damages, or for any charges of the
expense of any nature incurred without its written consent. The cost of repair or replacement
shall be the exclusive remedy for any breach of warranty. There is no warranty against
infringement of the like and no implied warranty arising from course of dealing or usage of
trade. This warranty will not apply to any product which has been repaired or altered outside of
the factory in any respect which in our judgment affects its condition or operation.
Some states do not allow the exclusion or limitation of incidental or consequential damages, so
the above limitation or exclusion may not apply to you. This Warranty gives you specific legal
rights, and you may have other rights which vary from state to state.
Mr. Heater, Inc. reserves the right to make changes at any time, without notice or
obligation, in colors, specifications, accessories, materials and models.
PRODUCT REGISTRATION: Thank you for your purchase.
Please log in to http://www.egiregistration.com to register your product.