Monessen Hearth MJ27NR-S Installation And Operating Instructions Manual
Monessen Hearth MJ27NR-S Installation And Operating Instructions Manual

Monessen Hearth MJ27NR-S Installation And Operating Instructions Manual

Unvented gas log heater

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Unvented Gas Log Heater
Installation and Operating Instructions
Models: MJ27NR-S, MJ27PR-S
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 any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
Leave the building immediately.
• Immediately call your gas supplier from
a neighbor's phone. Follow the gas
supplier's instructions.
• 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.
This appliance may be installed in an
a f t e r m a r k e t , p e r m a n e n t l y l o c a t e d ,
manufactured (mobile) home, where not
prohibited by local codes.
This appliance is only for use with the type
of gas indicated on the rating plate. This
appliance is not convertible for use with
other gases.
Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17
860024
MJ27 cover
10/08
This is an unvented gas-fired heater. It uses
air (oxygen) from the room in which it is
installed. Provisions for adequate combustion
and ventilation air must be provided.
Refer to Page 5.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

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Summary of Contents for Monessen Hearth MJ27NR-S

  • Page 1 This INSTALLER: Leave this manual with the appliance. appliance is not convertible for use with CONSUMER: Retain this manual for future reference. other gases. Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 2: Table Of Contents

    Massachusetts Residents Only.........28 Limited Lifetime Warranty .........29 Place and Secure appliance �������������������������������������10 Gas Line Installation ..........11 Connect the Gas������������������������������������������������������� 11 Check Gas Pressure ������������������������������������������������12 Millivolt Valve Control �����������������������������������������������12 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 3: Important Safety Information

    This is a normal and temporary occurrence� settle on surfaces outside the fireplace. See log place- ment instructions for proper installation� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 4: Codes

    New York, NY 10018 an opening(s) for induction of combustion air� National Fire Protection Association, Inc. Batterymarch Park Quincy, MA 02269 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 5: Product Features & Specifications

    (4�8 m per kw) of the aggregate input rating of all Z223.1/NFPA 54, the International Fuel Gas appliances installed in that space� Rooms communicating Code or applicable local codes. Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 6: Fireplace And Hearth Dimensions

    (Refer to (Refer to Table). Table). and malfunction. Figure 2. Reference Drawing of the MJ27 Log Set in an Enclosure FP1995 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17 logset in enclosure...
  • Page 7: Clearances And Height Requirements

    Extend heat resistant material to at least 8" AND install hood� *Figure 5* Less than 8" OR, extend heat resistant material to a height of at least 12" Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 8 10" at a minimum of 28" above the opening� FP2001 Figure 7. Minimum Mantel Clearance with No Hood� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17 FP2001 minimum mantel clearance no hood...
  • Page 9: Floor Clearances

    Figure 10. Minimum Clearance above Combustible Flooring with Noncombustible Material Installed at Base of Fireplace FP2004 Figure 9. Minimum Clearance above Combustible Flooring min clear nocomb floor FP2003 min clear comb floor Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 10: Installation

    Placement in a Fireplace with Restrictive Barrier on Page 6. FP2006 Anchor Hole Figure 11. Secure Heater to Floor of Fireplace/Fire- FP2006 secure to floor Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 11: Gas Line Installation

    Pipe Stainless Flexible Tube Locations that the Pressure Tapping Point May Be Installed Figure 12. Gas Connec- tion Gas Supply Inlet Manual Shutoff Valve FP2007 FP2007 gas connection Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 12: Check Gas Pressure

    (Use test point “OUT” closest to control knob)� After taking pressure reading, be sure and turn captured screw clock- wise firmly to re-seal. Do not over torque. Check for gas leaks� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 13: Electrical Wiring - Millivolt

    Verify proper operation after servicing. ODS Pilot Motor Millivolt Valve TH = 3 TP = 1 TP/TH = 2 FP2009 Figure 14. Wiring Diagram FP2009 MJ wiring diagram Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 14: Connect Remote Receiver

    Meter Leads Thermostat Reading Test To Test To Terminals Contacts Should Be Complete 2 & 3 Closed Minimum 175 System Thermopile 1 & 2 Open Minimum 500 Output Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 15: Log Placement

    Use only rock wool provided with log set. • Do not add additional rock wool. Figure 16. Place Rock Wool FP2011 FP2011 place rock wool Figure 17. Correct Rock Wool Placement LG552 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 16 Figure 22 Figure 21. LG545 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17 LG545...
  • Page 17 Figure Figure 24. LG548 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17 LG548 MLDV log 6...
  • Page 18 Simply open the windows for a few hours to vent the odor. Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 19: Flame Appearance

    FP2014 Figure 26. Correct Appearance of Pilot Flame FP2014 pilot flame correct Figure 28. Correct Burner Flame Appearance LG551a Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 20: Operating Instructions

    Refer to Page 6, Figure 2. burned off during the initial operation of the appliance, possibly causing headaches or eye or lung irritation� This is a normal and temporary occurrence. Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 21: For Your Safety Read Before Lighting

    Pilot On/Off/Pilot Knob Location of Piezo Ignitor, Control Knobs and Switch FP2016 Remote Receiver FP2016 Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17 burner controls...
  • Page 22: Millivolt Control Lighting Instructions

    2� If applicable: Turn ON/OFF switch to OFF position and/or set thermostat (if present) to lowest setting� 3� If applicable: Turn off all electric power to the heater� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17 FP2017...
  • Page 23: Match Lighting Instructions

    Failure to keep air intake holes clean will result in sooting and poor combustion. • External case should be dusted and wiped with a wet soapy cloth� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 24: Troubleshooting

    Repeat igniting operation until air is removed� 5� Replace ODS/pilot assembly or get it 5� ODS/pilot is clogged� services� 6� Gas regulator setting is not correct� 6� Check incoming pressure� Replace gas regulator� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 25 1� LP regulator shut down due to inlet 1� Verify LP tank regulator is installed and No gas to pilot� pressure too high� set at 11" to 13" w�c� 2� Replace regulator on heater� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 26: Replacement Parts

    REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 27: Logs

    REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 28: Massachusetts Residents Only

    (30) day period, a battery operated carbon monoxide and/or all venting design detector with an alarm shall be installed� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 29: Limited Lifetime Warranty

    1� Contact your supplier� Make sure you have your warranty, your sales receipt and the model/serial number of your Monessen product� 2� DO NOT ATTEMPT TO DO ANY SERVICE WORK YOURSELF� Monessen • MJ27NR-S/MJ27PR-S Owner's Manual • 20308677 • Rev B • 01/17...
  • Page 30 Monessen, a brand of Hearth & Home Technologies 7571 215th Street West, Lakeville, MN 50044 www�monessenhearth�com...

This manual is also suitable for:

Mj27pr-s

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