Enerco MH125FAV User Manual

Model #

OPERATING INSTRUCTIONS 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.

MH55FAV MH85FAV MH125FAV

FORCED AIR PROPANE CONSTRUCTION HEATER

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 appli-

ance.

— 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.

05/03 Revision L1 #70056MR. HEATER INC., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 216-881-5500

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.

WARNING:

The State of California requires the following warning:

COMBUSTION BY-PRODUCTS PRODUCED 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

HEATER SPECIFICATIONS .......................................................... 2

WARNINGS ............................................................................... 2

OPERATING PRECAUTIONS ....................................................... 3

SAFETY PRECAUTIONS .............................................................. 4

ODOR FADE WARNING ............................................................. 5

OPERATING INSTRUCTIONS ...................................................... 6

SERVICING ................................................................................ 6

SIZE AND CAPACITY OF PROPANE CYLINDERS REQUIRED ........ 7

WIRING DIAGRAMS.................................................................. 8

55FAV PARTS ............................................................................. 9

85FAV PARTS ............................................................................10

125FAV PARTS .......................................................................... 11

WARRANTY ............................................................................. 12

SPECIFICATIONS

Type of Gas: ............... For use with Propane Only

Gas Supply Pressure

to regulator.............. Max.: Bottle Pressure

regulator out ........... 28" W.C. (6.97 kPa)

Min.: 5 psig (34.5 kPa)

Electrical Input: ..........115V, 60 Hz, 1Ø, 3a

Min. Operating Voltage: 100V

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)

Mr. Heater | Forced Air Propane Construction Heater Operating Instructions and Owner’s Manual

SPECIFICATIONS

Model: ............................... MH55FAV ......................... MH85FAV........................... MH125FAV

Rating: .............................. 30,000-55,000 .................. 50,000 – 85,000 ................. 75,000 – 125,000

Btu/Hr Btu/hr Btu/hr (8.8-16.1 kW) (14.6 – 25.0 kW) (21.9 – 36.6 kW)

Fuel Consumption: .............. 1.4-2.5 #/hr ...................... 2.3 – 3.9 #/hr ..................... 3.5 – 5.8 #/hr

(.64-1.1 kg/hr) (1.04 – 1.77 kg/hr) (1.59 – 2.63 kg/hr)

Fuel Orifice Port No.: .......... 18 ..................................... 18 ....................................... 18

Fuel Orifice Port Size: .......... 0.0196" .............................. 0.0240” ............................... 0.0295"

(0.50mm) (0.6024mm) (0.75mm)

Heated Air Output: ............. 300 cfm ............................ 350 cfm .............................. 350 cfm

(8.49 cmm) (9.91 cmm) (9.91 cmm)

Average Air Temp. Rise: ...... 200°F (111°C) .................... 200°F (111°C) ...................... 400°F (232°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 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 producting 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.

Operating Instructions and Owner’s ManualMr. Heater | Forced Air Propane Construction Heater

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 indoor use only. Area must be well ventilated. 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. Install the heater such that is is not directly exposed to water spray, rain and/or dripping water.

11. Maintain minimum clearance from normal combustible material (like paper). Figure 2.

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. Do not use with ductwork. Do not restrict inlet or exit.

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.

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.

Figure 1

VENTILATION: Minimum openings required

Opening Opening

Heater near floor near ceiling

Forced air (55) ..................... 1 ft

Forced air (85, 125) ............. 2 ft

............................................

1 ft

2 ft

Figure 2

MINIMUM CLEARANCE: From normal combustible material

Clearance 55, 85, 125 Forced Air

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.

Mr. Heater | Forced Air Propane Construction Heater Operating Instructions and Owner’s Manual

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