Heatstar MHU50, MHU125, HSU80, HSU125, MHU80 User Manual

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FUEL CONVERSION MANUAL

READ INSTRUCTIONS CAREFULLY: YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS. Read and

follow all instructions. Place instructions in a safe place

Model #

HSU50 HSU80

HSU125

COMPACT UNIT HEATER FOR COMMERCIAL APPLICATIONS COMPACT UTILITY HEATER FOR RESIDENTIAL APPLICATIONS

for future reference. Do not allow anyone who has not read these instructions to assemble, light, adjust or operate the heater.

For Big Maxx Heaters using

Honeywell VR8205M valves.

Model #

MHU50 MHU80

MHU125

WARNING:

Instructions are for Honeywell VR8205M valves.

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier.

- WHAT TO DO IF YOU SMELL GAS Ǟ Open Windows

Ǟ DO NOT try to light appliance. Ǟ DO NOT touch any electrical switch Ǟ DO NOT use any telephone in your house. Immediately call your local gas supplier from a neighbor’s

telephone. Follow the gas supplier’s instructions. Ǟ DO NOT touch any electrical switch; do not use any phone in your building. Ǟ If you cannot reach your gas supplier, call the Fire Department.

- Installation and service must be performed by a qualified installer, service agency or the gas supplier.

FOR YOUR SAFETY:

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

WARNING: If the information in these instructions are not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

Enerco Group Inc., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 •1 - (800) - 251 - 0001

60187

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: THIS PRODUCT CAN EXPOSE

YOU TO CHEMICALS INCLUDING LEAD AND LEAD COMPOUNDS, WHICH ARE KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER AND BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM. FOR MORE INFORMATION VISIT WWW.P65WARNINGS.CA.GOV

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 CONVERSION KIT SHALL

BE INSTALLED BY A QUALIFIED SERVICE AGENCY IN ACCORDANCE WITH THE MANUFACTURER’S INSTRUCTIONS AND ALL APPLICABLE CODES AND REQUIREMENTS OF THE AUTHORITY HAVING JURISDICTION. IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY, A FIRE, EXPLOSION OR PRODUCTION OF CARBON MONOXIDE MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR LOSS OF LIFE. THE QUALIFIED SERVICE AGENCY PERFORMING THIS WORK ASSUMES RESPONSIBILITY FOR THE PROPER CONVERSION OF THIS APPLIANCE WITH THIS KIT.

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

CONTENTS

Fuel Conversion Kits ...................................................... E3

Fuel Conversion Instructions ......................................... E4

Rating Tag Conversion .................................................. E6

Warranty ...................................................................... E8

LANGUAGES

ENGLISH .................................................................E1 - E8

SPANISH .................................................................S1 - S8

FRENCH .................................................................. F1 - F8

GENERAL INFORMATION

RETAIN THIS MANUAL FOR FUTURE REFERENCE. FOR QUESTIONS, PROBLEMS, MISSING PARTS BEFORE RETURNING TO RETAILER PLEASE CALL WITH MODEL NUMBER AND SERIAL NUMBER OF HEATER: 1 - (800) - 251 - 0001 MONDAY-FRIDAY 8-5 EASTERN TIME OR E-MAIL USING THE ENERCO WEBSITE:

WWW.ENERCO.COM/

In order to provide the best service possible Enerco is now giving you more ways to get in touch with us:

YouTube: youtube.com/mrheaterTV Facebook: www.facebook.com/mrheaterproducts/ Twitter: https://twitter.com/MrHeater

Compact Unit Heater

Fuel Conversion Manual

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FUEL CONVERSION

FUEL CONVERSION INSTRUCTIONS

FUEL CONVERSION Section 1: FUEL CONVERSION KITS

For Converting from Natural Gas to L.P. Gas

HONEYWELL KIT #393691

Gas Conversion Labels

Control Conversion Labels

Orifice

(See P/N Table Below)

Part Number Description

13575 Gas conversion label 60232 Converted Rating tag 60233 Converted Rating tag 60234 Converted Rating tag 11727 Spring - gas valve (label inc.) 60156 L.P. Orifice 13576 Control Conversion Label

Fuel Conversion Part Numbers Model # BTU/HR HSU50/MHU50 50,000 HSU80/MHU80 80,000 HSU125/HSU125 125,000

50 80 125

1 1 1 1

1 1 1 3 5 8 1 1 1

Natural - To - LP

F260163

For Converting from L.P. Gas to Natural Gas

HONEYWELL KIT #393691

Gas Conversion Labels

Control Conversion Labels

Part Number Description 13575 Gas conversion label 60235 Converted Rating tag 60236 Converted Rating tag 60237 Converted Rating tag 11727 Spring - gas valve (label inc.) 60049 L.P. Orifice 13576 Control Conversion Label

Orifice

(See P/N Table Below)

Fuel Conversion Part Numbers Model # BTU/HR HSU50/MHU50 50,000 HSU80/MHU80 80,000 HSU125/HSU125 125,000

50 80 125

1 1 1 1

1 1 1 3 5 8 1 1 1

LP - To - Natural

F260164

Compact Unit Heater

Fuel Conversion Manual

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FUEL CONVERSION Section 2: FUEL CONVERSION INSTRUCTIONS

4 screws

FIGURE 10 FIGURE 11

WARNING: Explosion Hazard

Turn off the gas supply to the heater before performing any service or maintenance.

Failure to follow these instructions will result in death, injury or property damage.

WARNING: Electrical Shock Hazard

Unplug the electrical cord from the outlet before performing any service maintenance.

Failure to follow these instructions will result in death, injury or property damage.

The electrode and sensor are not adjustable. DO NOT change location or position as part of this conversion kit.

WARNING

This conversion kit shall be installed by a qualified service agency in accordance with the manufacturer’s instructions and all applicable codes and requirements of the authority having jurisdiction. If the information in these instructions is not followed exactly, a fire, explosion or production of carbon monoxide may result causing property damage, personal injury or loss of life. The qualified service agency performing this work assumes responsibility for the proper conversion of this appliance with this kit.

Compact Unit Heater

Step 1

CAUTION THE UNIT MUST NOT BE CONNECTED TO EITHER THE GAS SUPPLY OR THE ELECTRICAL POWER SUPPLY, BEFORE PROCEEDING WITH CONVERSION.

Step 2

Remove and retain the four screws holding the manifold on to the burner box (Figure 10). Rotate the valve/ manifold assembly, away from the burners (Figure 11). The valve/manifold assembly holds the orifices (3 orifices on unit HSU50/MHU50, 5 orifices on unit HSU80/ MHU80, 8 orifices on unit HSU125/MHU125). This will allow access to the orifices on the manifold, and also the adjustment spring in the valve/regulator.

Step 3

Remove and discard the adjustment spring cap from gas valve/ regulator with a flat blade screw driver by turning the screw counterclockwise. Remove and discard the regulator adjustment screw found under the cap. Remove and discard the spring that is located under the adjustment screw. Take the spring kit from the conversion kit, and compare the part number of the kit to the parts list on page 3. If it does not match, immediately contact Heatstar, Inc. for the correct kit. After confirming the spring kit is correct for the heater model you are converting, install the new spring and adjustment screw. Turn spring adjustment screw clockwise (in) until the screw stops, then turn it counter-clockwise (back) 1 ½ turns. Place conversion label supplied with the spring kit on the valve near the adjustment screw cover opening.

Step 4

Remove and discard the orifices (3 orifices on unit HSU50/MHU50, 5 orifices on unit HSU80/MHU80, 8 orifices on unit HSU125/ MHU125) from the manifold with using a ½ “ open end wrench. Turn them counter-clockwise to remove. Take the new orifices from the conversion kit and before installing, confirm that the number stamped on the side of the orifice matches the number for the kit being installed. If it does not, immediately contact Heatstar, Inc. for the correct kit. If they are the correct orifices, install them in the manifold using caution not to cross thread.

Fuel Conversion Manual

E-4

6 5 4 3 2 1

4”

0 1 2 3 4 5 6

6 5 4 3 2 1 0 1 2 3 4 5 6

N.G. L.P.

FIGURE 12

10”

Step 5

Rotate the valve/ manifold assembly back up into the burner box, making sure that all the orifices are indexed into the burners and are not caught on the locating ring on the back of each burner. Secure the manifold to the burner box with the four screws removed in step 2.

Step 6

Following the instructions in the unit heaters operations manual mount the heater and connect the gas supply (making sure to leak check all connections with soapy water).

Step 7

Remove valve pressure test plug and retain for later use. Connect a water-filled U-tube manometer to the test port. See Figure 12. Use a manometer because test gauges are not reliable and may give a false reading.

Step 8

Connect main electrical power supply, and turn main gas supply on.

Step 9

Turn up the thermostat to call for heat, thereby starting the ignition sequence for the heater.

Step 10

When the burners light, set the manifold gas pressure by turning the adjustment screw to the regulator spring that was replaced in step 6. Once the pressure has been adjusted, replace the adjustment screw cover with a new one from the conversion kit.

Decrease Pressure

Counter-Clockwise

Refer to Table 6 for inlet pressure requirements, and set manifold pressures according to gas type and altitude(See Table 4 and Table 5). The manometer illustration (See Figure 12) shows each of the pressure readings.

Increase Pressure

Clockwise

Step 11

Turn down the thermostat and allow the heater to complete a cool down cycle. Then disconnect main electrical power, and turn the main gas supply off to appliance.

Step 12

Disconnect the manometer from appliance and replace the test plug on valve removed in step 6.

Compact Unit Heater

Fuel Conversion Manual

E-5

FUEL CONVERSION Section 3: RATE TAG CONVERSION INSTRUCTIONS

FIGURE 13

Step 13

Connect main electrical power, and turn main gas supply back on. Turn up thermostat to call for heat. When the main burners light using soapy water check all connections thoroughly for gas leaks. Remembering to also check the pressure test plug replaced in step

12. Allow the heater to operate for at least 5 minutes, then observe the main burner flame. A hard blue flame extending into the tube is normal. Slight yellow tipping is acceptable. There is no air adjustment to the burner.

Step 14

See figure 13. Remove the data tag for their respective gases. Remove label and place over the existing portion of the tag. This tag is preprinted with all the correct information for the converted heater.

Step 15

Remove the converted information tag from the kit and fill in the information. Then place this tag below the updated rating tag on the unit.

Step 16

Replace any panels and operate heater following all warnings/cautions and instructions in the operator’s manual and labels.

Table 4

NATURAL GAS MANIFOLD PRESSURES - IN. W.C.. (KPA)

MHU50/80/125

HSU50/80/125

50/80/125 4.0”WC (0.99 KPA)* 3.6”WC (0.89 KPA)

0-2000 (0-610) 2000-4500 (610-1370)

*NO ADJUSTMENT REQUIRED

ALTITUDE FT. (M)

Table 5

LP/PROPANE GAS MANIFOLD PRESSURES - IN.W.C.. (KPA)

MHU50/80/125

HSU50/80/125

50/80/125 10”WC (2.49 KPA)* 8.5”WC (2.12KPA)

0-2000 (0-610) 2000-4500 (610-1370)

*NO ADJUSTMENT REQUIRED

ALTITUDE FT. (M)

Table 6

INLET PRESSURES:

Natural Gas

MAX - 14” WC (3.49 kPa) MIN - 5”WC (1.25 kPa)

Propane

MAX - 14” WC (3.49 kPa) MIN - 11”WC (2.74 kPa)

Compact Unit Heater

Fuel Conversion Manual

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THIS PAGE INTENTIONALLY LEFT BLANK

ESTA PÁGINA SE DEJÓ INTENCIONALMENTE EN BLANCO

CETTE PAGE A ÉTÉ INTENTIONNELLEMENT LAISSÉE VIERGE

Compact Unit Heater

Fuel Conversion Manual

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FUEL CONVERSION MANUAL

READ INSTRUCTIONS CAREFULLY: YOUR SAFETY IS IMPORTANT TO YOU AND TO OTHERS. Read and

follow all instructions. Place instructions in a safe place

Model #

HSU50 HSU80

HSU125

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 HEATSTAR LOCAL DEALER,

Mr. HEATER LOCAL DEALER, OR DIRECT FROM THE FACTORY

FOR INFORMATION REGARDING SERVICE:

Please call Toll-Free 1 - (800) - 251 - 0001 Our office hours are 8:00 AM – 5:00 PM, EST, Monday through Friday. Or contact us using an enerco website: www.enerco.com • www.heatstarbyenerco.com • www.mrheater.com Please include the model number, date of purchase, and description of problem in all communication.

For Big Maxx Heaters using

Honeywell VR8205M valves.

Model #

MHU50 MHU80

MHU125

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 1-888-849-1899.

Address any Warranty Claims to the Service Department, Enerco Group, 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.

Enerco Group, Inc. reserves the right to make changes at any time, without notice or obligation, in colors, specifications, accessories, materials and models.

Enerco Group, Inc., 4560 W. 160TH ST., CLEVELAND, OHIO 44135 • 1 - (800) - 251 - 0001 Heatstar is a registered trademark of Enerco, Inc. Mr. Heater is a registered trademark of Enerco, Inc. © 2018, Enerco. All rights reserved

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Fuel Conversion Manual

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