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Majestic 18NB Installation And Operating Instructions Manual

Unvented gas log heater or vented decorative appliance
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Download this manual See also: Installation Instructions and Operating Manual
Unvented Gas Log Heater
or
Vented Decorative
Appliance
Models: 18NB, 24NB

Installation and Operating Instructions

WARNINGS
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.
• 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.
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 7.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future refer-
ence.
81D0108 4/10 Rev. 6

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  • Page 1: Installation And Operating Instructions

    Unvented Gas Log Heater Vented Decorative Appliance Models: 18NB, 24NB Installation and Operating Instructions WARNINGS 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.

  • Page 2: Table Of Contents

    CONTENTS 18NB/24NB Gas Log Set Thank you and congratulations on your purchase of a Majestic Log Set Please read the Installation and Operation Instructions before using the appliance! IMPORTANT: Read all instructions and warnings carefully before starting installation. Failure to follow these instructions may result in a possible fire hazard and will void the warranty.

  • Page 3: Important Safety Information

    18NB/24NB Gas Log Set IMPORTANT SAFETY INFORMATION OWNER INSTALLER Please retain these instructions for future reference. Please leave these instructions with the appliance. IMPORTANT Read these instructions carefully before installing or trying to operate this vent-free gas heater. • Any change to this heater or its controls can be dangerous.

  • Page 4: Codes

    18NB/24NB Gas Log Set IMPORTANT SAFETY INFORMATION 19. During manufacturing, fabricating and shipping, various . The appliance must be isolated from the gas supply components of this appliance are treated with certain piping system by closing its equipment shutoff valve oils, films or bonding agents.

  • Page 5: Product Features And Specifications

    18NB/24NB Gas Log Set PRODUCT FEATURES MAkE SURE YOU HAVE RECEIVED ALL GAS PRESSURES PARTS: Natural Propane (LP) Check your packing list to verify that all listed parts have Inlet Minimum 5.0” w.c. 11.0” w.c. been received. You should have the following: Inlet Maximum 10.5”...

  • Page 6: Adequate Combustion And Ventilation Air

    18NB/24NB Gas Log Set COMBUSTION and VENTILATION AIR ADEQUATE COMBUSTION AND VENTILATION AIR This heater shall not be installed in a confined space or unusually tight construction unless provi- sions are provided for adequate combustion and ventilation air. The National Fuel Gas Code, (ANSI Z223.1/NFPA 54), defines a confined space as a space whose volume is less than 50 cubic feet per 1,000 BTU per hour (4.8 m...

  • Page 7: Fireplace And Hearth Dimensions

    18NB/24NB Gas Log Set FIREPLACE AND HEARTH DIMENSIONS This appliance is for installation only in a IMPORTANT INFORMATION FOR THE solid-fuel burning masonry or UL127 factory- INSTALLATION OF THIS GAS LOG SET built fireplace, vent free appliance, or in PLACEMENT IN FIREPLACE WITH A listed ventless firebox enclosure.

  • Page 8: Clearances And Height Requirements

    18NB/24NB Gas Log Set CLEARANCES HEIGHT REQUIREMENTS The dimensions shown in Figures 4 through 12 and defined in the fireplace manufacturer's instructions are minimum clearances to maintain when installing this heater. Left and right clearances are determined when facing the front of the heater.
  • Page 9 18NB/24NB Gas Log Set CLEARANCES and HEIGHT REQUIREMENTS Heat resistant material (minimum requirements) with wooden mantel or other combustible projection: To install the heater with a wooden mantel, shelf or other combustible projection above, first measure the heat resis- 8” or More tant material shown in Figure 6, then refer to Table B.
  • Page 10 CLEARANCES HEIGHT REQUIREMENTS 18NB/24NB Gas Log Set 10" or less 10" 8" 6" 2 " Heat Heat Resistant 28" Resistant Material Material 12" min. 8"     14"    20 "   24 "  28" Figure 9 - Minimum Mantel Heater in Clearance with No Heater in Fireplace or Fireplace or Hood —...

  • Page 11: Floor Clearance

    18NB/24NB Gas Log Set FLOOR CLEARANCE The gas log heater must be installed at least 1C\," above any combustible flooring material, such as carpeting or tile, which is closer than 14" to the base of the fireplace. The minimum distance must be maintained from the top surface of carpeting, tile, etc.

  • Page 12: Fireplace Preparation

    18NB/24NB Gas Log Set FIREPLACE PREPARATION Before installing in a solid fuel burning fireplace, The chimney flue and firebox must be cleaned of soot, creosote, ashes and loose paint by a qualified chimney cleaner. This appliance is for installation only in a solid fuel burning fireplace (masonry fireplace or manufactured fireplace) with a working flue and constructed of noncombustible material.

  • Page 13: Vented Application Installation

    VENTED APPLICATION INSTALLATION / SECURE APPLIANCE 18NB/24NB Gas Log Set The fireplace and gas logs function as a system. If the fireplace is spilling into the room (check with a match or a smoke stick), reposition the damper clamp until a positive draft is obtained by opening the damper. If negative pressure in home prevents having a positive draft, contact your dealer for assistance.

  • Page 14: Gas Line Connection

    18NB/24NB Gas Log Set GAS LINE CONNECTION Use new black iron or steel pipe. Internally tinned copper or copper tubing can be used per National Fuel Code, section 2.6.3, providing gas meets hydrogen sulfide limits, and where permitted by local codes. Gas piping system must be sized to provide minimum inlet pressure (Listed on Data Plate) at the maximum flow rate (BTU/hr).

  • Page 15: Electrical Wiring (Milli-Volt)

    18NB/24NB Gas Log Set ELECTRICAL WIRING (MILLI-VOLT) Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. The milli-volt valve is a self-powered combination gas control THAT DOES NOT REQUIRE 110 VAC TO OPER- ATE.

  • Page 16: Connecting Remote Receiver

    18NB/24NB Gas Log Set ELECTRICAL WIRING (MILLI-VOLT) CONNECTING REMOTE RECEIVER A. Complete Milli-volt System Check (“A” Reading - Thermostat contacts CLOSED 1. Set remote receiver. See instructions included in receiver kit. - Control knob “ON” - Main burner should turn .

  • Page 17: Highland Oak Log Placement

    Never add additional logs or embellishments such as pine cones, vermiculite or rock wool to the heater. Only use the logs and 2G-RW rock wool (for 18NB), or 3G-RW rock wool (for 24NB) supplied with the unit.

  • Page 18: Log Placement

    18NB/24NB Gas Log Set LOG PLACEMENT Right Front Log # . Place front right log (#) on right pin located on burner and right grate bar. Figure 21. After placing front right log, ensure log is fully upright and tilting towards the back of the burner.
  • Page 19 18NB/24NB Gas Log Set LOG PLACEMENT Left Front Log #5 5. Place left front log (#5) on left pin located on burner and left grate bar. Rest top right portion of log on right front log. Figure LG64 Figure 24 -...

  • Page 20: Ember, Grate, And Rock Installation

    EMBER, GRATE, AND ROCk INSTALLATION 18NB/24NB Gas Log Set PLACE FLICkERING EMBERS Place flickering bright embers (FBE-.1G) after placing logs on burner. Pull apart into small strands and place on top of existing rock wool in front of and between front logs where they can be seen.

  • Page 21: Flame Appearance

    18NB/24NB Gas Log Set FLAME APPEARANCE Flames from the pilot and burner should be visually checked as soon as the heater is installed. In addition, periodically check the flames visually during operation. CHECk THE PILOT FLAME The pilot flame must always be present when the heater is in operation.

  • Page 22: Operating Instructions

    18NB/24NB Gas Log Set OPERATING INSTRUCTIONS FOR YOUR SAFETY READ BEFORE LIGHTING If you do not follow these instruction exactly, a fire or explosion may result causing property damage, personal injury or loss of life. A. This appliance is equipped with a piezo ignition device which lights the pilot. If piezo is not working properly see Match lighting instructions, page 30.

  • Page 23: To Turn Off Gas To Heater

    OPERATING INSTRUCTIONS 18NB/24NB Gas Log Set MILLI-VOLT CONTROL LIGHTING INSTRUCTIONS 1. STOP! Read the safety information label. . Make sure the manual shutoff valve is fully open. 3. This gas log set is equipped with an ignition device (piezo) which automatically lights the pilot. If piezo ignitor does not light the pilot, refer to instructions for Match lighting instructions, page 30.

  • Page 24: Match Lighting Instructions

    18NB/24NB Gas Log Set OPERATING INSTRUCTIONS MATCH LIGHTING INSTRUCTIONS 1. Remove any items necessary for easy access to the pilot (for example: logs, screens, etc.). . Follow appropriate lighting instructions found previously. Instead of pushing and releasing the piezo button, light a match and hold the flame to the end of the pilot and ignite the pilot.

  • Page 25: Cleaning & Servicing

    18NB/24NB Gas Log Set CLEANING AND SERVICING CLEANING AND SERVICING Annual inspection and cleaning by your dealer or qualified service technician is recommended to prevent malfunction and/or sooting. Turn off heater and allow to cool before cleaning. Disconnect electrical power before cleaning or servicing.

  • Page 26: Troubleshooting

    18NB/24NB Gas Log Set TROUBLESHOOTING Turn appliance OFF and allow to cool before servicing. Only a qualified service person should service and repair the heater. NOTE: All troubleshooting items are listed in order of operation. Solution Problem Possible Cause 1. Replace ignitor.
  • Page 27 18NB/24NB Gas Log Set TROUBLESHOOTING If the gas quality is bad, your pilot may not stay lit, the burners may produce soot and the heater may backfire when lit. If the gas quality or pressure is low, contact your local gas supplier immediately.

  • Page 28: Replacement Parts

    18NB/24NB Gas Log Set REPLACEMENT PARTS BURNER ASSEMBLY Failure to position the parts in accordance with these diagrams or failure to use only parts specifically approved with this appliance may result in property damage or personal injury. 81D0108...
  • Page 29 REPLACEMENT PARTS 18NB/24NB Gas Log Set BURNER ASSEMBLY 18NB 24NB Ref. Description Natural Propane Natural Propane Piezo Ignitor 14D0503 014D0503 14D0503 14D0503 Peizo Wire 00K063 00K063 00K063 00K063 Burner 81D004 81D010 81D0515 81D0504 Control Valve 14D0467 14D0468 14D0467 14D0468 ODS Pilot Assy.

  • Page 30: Logs

    18NB/24NB Gas Log Set REPLACEMENT PARTS (BENEATH #7) HIGHLAND OAk REFRACTORY LOGS Item Description Qty. HO18-R HO18-F HO24-R HO24-F HO30-R HO30-F 1. Ember Chunk 81D0110 81D0109 81D0110 81D0109 81D0110 81D0109 . Right Front Log 81D0011 81D0035 81D0019 81D0043 81D007 81D0051 3. Right Rear Log...
  • Page 31 18NB/24NB Gas Log Set Massachusetts Residents Only — Please read and follow these special requirements . Approved Carbon Monoxide Detectors. Each carbon NOTE REGARDING VENTED PRODUCTS monoxide detector as required in accordance with the above This product must be installed by a licensed plumber or gas fitter provisions shall comply with NFPA 70 and be ANSI/UL 034 when installed within the Commonwealth of Massachusetts.

  • Page 32: Warranty

    18NB/24NB Gas Log Set LIMITED LIFETIME WARRANTY POLICY LIFETIME WARRANTY The following components are warranted for life to the original owner, subject of proof of purchase: Firebox, Combustion Chamber, Heat Exchanger, Grate, and Stainless Steel Burners. FIVE YEAR WARRANTY The following components are warranted for 5 years to the original owner, subject of proof of purchase: Vent Free Ceramic Fiber Logs and Aluminized Burners.
  • Page 33 MHSC 149 Cleveland Drive • Paris, Kentucky 40361 www.mhsc.com...

This manual is also suitable for:

24nbHo18-r

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