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Majestic 18NB Installation And Operating Instructions Manual

Unvented gas log heater or vented decorative appliance
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UNVENTED GAS LOG
HEATER or
VENTED DECORATIVE
APPLIANCE
INSTALLATION AND OPERATING
INSTRUCTIONS
This appliance may be installed
in an aftermarket, permanently
located, 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.
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.
–
–
–
READ AND SAVE THESE INSTRUCTIONS
MODELS: 18NB, 24NB
Natural Gas or Liquid Propane
Control Type: Millivolt
WARNINGS
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.

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  • Page 1 UNVENTED GAS LOG HEATER or VENTED DECORATIVE APPLIANCE INSTALLATION AND OPERATING INSTRUCTIONS MODELS: 18NB, 24NB Natural Gas or Liquid Propane Control Type: Millivolt WARNINGS This appliance may be installed in an aftermarket, permanently If the information in this manual is not followed exactly,...

  • Page 2: Table Of Contents

    CONTENTS Electrical Wiring (Milli-volt) ........21 Important Safety Information ........3 Connecting Remote Receiver ...... Getting Started ............5 Checking System Operation ...... Product Features and Specifications ....6 Highland Oak Log Placement .......23 Natural Gas ............6 Ember, Grate, and Rock Installation ..... 25 Propane/LPG .

  • Page 3: Important Safety Information

    IMPORTANT SAFETY INFORMATION INSTALLER OWNER Please leave these instructions with the appliance. Please retain these instructions for future reference. 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. • Improper installation or use of the heater can cause serious injury or death from fire, burns, explosion or carbon monoxide poisoning. •...
  • Page 4 IMPORTANT SAFETY INFORMATION Continued from page 3 16. Keep room area clear and free from combustible materi- 25. Never burn solid fuels in a fireplace where a unvented als, gasoline and other flammable vapors and liquids. room heater is installed. 17. Unvented gas heaters are a supplemental zone heater. 26. Always have a fireplace screen in place when the appli- They are not intended to be the primary heating appli- ance is in operation and, unless other provisions for ance.

  • Page 5: Getting Started

    GETTING STARTED MAkE SuRE YOu HAVE RECEIVED ALL PARTS: Check your packing list to verify that all listed parts have been received. You should have the following: • Unvented Gas Log Burner Assembly • Two (2) Plastic Bags Containing Crushed Volcanic Rock •...

  • Page 6: Product Features And Specifications

    PRODuCT FEATuRES SPECIFICATIONS NATURAL GAS NOTE: An external regulator is required to reduce supply pressure to a maximum of 10 " W.C. on natural gas systems operating at higher pressure. Gas Rate MILLIVOLT Model Number Control Max BTu/Hr Min BTu/Hr Regulator Pressure Setting: 3.5"...

  • Page 7: General Installation Information

    GENERAL INSTALLATION INFORMATION CODES Adhere to all local codes or, in their absence, the latest edition of THE NATIONAL FUEL GAS CODE ANSI Z223.1 or NFPA54 which can be obtained from… American National Standards Institute, Inc. 1430 Broadway New York, NY 10018 National Fire Protection Association, Inc. Batterymarch Park Quincy, MA 02269 ADEQUATE COMBUSTION AND VENTILATION AIR...
  • Page 8 GENERAL INSTALLATION INFORMATION Counter Fireplace Figure 1 - Example of a Large Room with 1/2 Wall Divider The following formula can be used to determine the maximum heater rating per the definition of unconfined space: (L1 + L) Ft x (W) Ft x (H) Ft. x 1000 Hr = Consider two connecting rooms with an open area between, with the following dimensions: = 15 Ft., L = 1 Ft., W = 1 Ft., H = 8 Ft.

  • Page 9: Fireplace And Hearth Dimensions

    FIREPLACE AND HEARTH DIMENSIONS This appliance is for installation only in a solid-fuel burning masonry or uL127 factory- built fireplace, vent free appliance, or in listed ventless firebox enclosure. It has been design certified for these installations. Exception: DO NOT install this appliance in a factory-built fireplace that includes instructions stating it has not been tested or should not be used with unvented gas logs.

  • Page 10: Placement In A Fireplace With A Restrictive Barrier

    PLACEMENT IN A FIREPLACE WITH A RESTRICTIVE BARRIER IMPORTANT INFORMATION FOR THE INSTALLATION OF THIS GAS LOG SET The following are guidelines for placing a gas log set in a fireplace that has a restrictive barrier along the bottom front open- ing of the fireplace.

  • Page 11: Clearances And Height Requirements

    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. When heater is installed into a ventless firebox, minimum clearances, as specified by the ventless firebox manufacturer, must be met.
  • Page 12 Refer to “Installing Vented Applications” found on page 18. Heat Resistant Material Measure this distance Heater in Fireplace or Firebox Figure 5 - Measuring Heat Resistant Material HEAT RESISTANT REQUIREMENTS FOR SAFE INSTALLATION MATERIAL 18NB 24NB MEASUREMENT 1" or more Hood not required. Hood not required. 8" to less than 1" Hood not required. extend heat resistant material to 1" OR install hood. See Figure 5. Less than 8" extend heat resistant material extend heat resistant material and 8” AND install hood. See...
  • Page 13 Figure 6 - Measuring Heat Resistant Material for Mantel REQuIREMENTS FOR SAFE INSTALLATION WITH WOODEN MANTEL, HEAT RESISTANT SHELF OR OTHER COMBuSTIBLE PROJECTION MATERIAL MEASUREMENT 18NB 24NB 1" or more hood not required. observe profiles (side hood not required. observe profile (side elevations) shown in Figure 7, page 1.
  • Page 14 Example: A mantel may project from the wall a maximum of 2 " at a mini- mum of 14" above the opening, and a maximum of 6" at a minimum of 20 " above the opening. Figure 7 - Minimum Mantel Clearance with No Hood - 18NB 12" 10" 8" 6"...
  • Page 15 CLEARANCES HEIGHT REQUIREMENTS 10" or less Heat Resistant Material 12" min. 28" Heater in Fireplace or Example: The bottom of the mantel may project from the wall a maxi- Firebox mum of 10" at a minimum of 28" above the opening. Figure 9 - Minimum Mantel Clearance with No Hood —...

  • Page 16: Floor Clearance

    FLOOR CLEARANCE The gas log heater must be installed at least 1 " 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. see Figure 11. The gas log heater may be installed nearer to the floor if a minimum of 14"...

  • Page 17: Fireplace Preparation

    FIREPLACE PREPARATION BEFORE FULLY INSTALLING THE UNIT: • Turn oFF the gas supply to the fireplace or firebox. • Seal any fresh air vents and/or ash clean-out doors located on the floor or wall of the fireplace. If left unsealed, drafting may cause pilot outage or sooting. Use a heat resistant sealant. Do not seal the chimney flue damper.

  • Page 18: Installing Vented Applications

    INSTALLING VENTED APPLICATIONS PLACING AND SECuRING APPLIANCE You must secure the gas log heater to the fireplace floor. If not, the entire unit may move when you adjust the controls. Movement of unit may cause shifting of the gas logs which leads to sooting and improper burning.

  • Page 19: Connecting The Gas

    CONNECTING THE GAS NOTICE: A qualified gas appliance installer must connect the heater to the gas supply. Consult all local codes. 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.

  • Page 20: Checking Gas Pressure

    CHECkING GAS PRESSuRE The heater gas inlet connection is a " NPT at the valve. On all control type units, the inlet connection is on the right side of Connecting directly to an unit. To connect from the opposite side, route the pipe around unregulated propane/LPG tank the back portion of the unit. can cause an explosion. When tightening up the joint to the valve, hold the valve securely to prevent movement. Test all gas joints from the gas meter to the heater valve for leaks using a gas analyzer or soap and water solu- tion after completing connection. DO NOT uSE AN OPEN FLAME. Check the gas pressure with the appliance burning and the control set to HIGH. Test Port “oUT” MILLI-VOLT VALVE CONTROL (Figure 16) The valve regulator controls the burner pressure which should be checked at the pressure test...

  • Page 21: Millivolt

    ELECTRICAL WIRING (MILLI-VOLT) The milli-volt valve is a self-powered combination gas control THAT DOES NOT REQuIRE 110 VAC TO OPER- ATE. Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify proper operation after servicing. ODS Pilot ODS Pilot On/Off Switch or Milli-volt Optional Valve...

  • Page 22: Connecting Remote Receiver

    ELECTRICAL WIRING (MILLI-VOLT) CONNECTING REMOTE RECEIVER 1. Set remote receiver. See instructions included in receiver kit. 2. Connect the two (2) 1/4" female connectors to the TP/TH and TH terminals on the control valve. Remote Wire Connectors Do not let wires touch grate or burner.

  • Page 23: Highland Oak Log Placement

    LOG PLACEMENT LOG PLACEMENT Before you begin — This unit is supplied with seven (7) ceramic fiber logs. Do not handle these logs with your bare hands. Always wear gloves to prevent skin irritation from ceramic fibers. After handling the logs, wash your hands gently with soap and water to remove any traces of fibers. The positioning of the logs is critical to the safe and clean operation of this heater.

  • Page 24: Log Placement

    LOG PLACEMENT 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. see Figure 24 6. Place top left log (#6) on left rear log (#4) and left front log (#5) using locating grooves on bottom of #6 and locating blocks on logs #4 and #5. see Figure 25 7. Place right top log (#7) on right rear log (#3) and right front log (#2) using locators on the bottom of log #7 and locators on logs #2 and #3. see Figure 26 8. Place small right front top log (#8) on log #7 and log #2 using locating grooves on the bottom of log #8 and locating blocks on log #7 and log #2. see Figure 27 Figure 22 - Placing Log #3 Figure 23 - Placing Log #4 Figure 24 - Placing Log #5 Figure 25 - Placing Log #6...

  • Page 25: Ember, Grate, And Rock Installation

    EMBER, GRATE, AND ROCk INSTALLATION PLACING 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 26: Flame Appearance

    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. CHECkING THE PILOT FLAME The pilot flame must always be present when the heater is in operation. It should just touch the top of the ther- mocouple tip for natural. see Figure 30 for correct pilot flame.

  • Page 27: Checking Burner Flames

    CHECKING THE BURNER FLAME In normal operation at full rate after 15 minutes, the following flame appearances should be observed: Figure 32 - Correct Appearance of Rear Flames of Highland Oak Burner will have a random pattern of yellow flames as shown in Figure 35. There should be glowing embers on the front burner. Note: The front flames and embers will be an opaque orange color during the burn off time.

  • Page 28: Operating Instructions

    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. B. Before oPeraTing smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.

  • Page 29: Millivolt Control Lighting Instructions

    OPERATING INSTRuCTIONS MILLI-VOLT CONTROL LIGHTING INSTRUCTIONS 1. STOP! Read the safety information label. 2. 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. 4. Turn gas control knob clockwise to the OFF position and turn ON/OFF switch to OFF position. 5.

  • Page 30: Match Lighting Instructions

    OPERATING INSTRuCTIONS CLEANING AND SERVICING MATCH LIGHTING INSTRUCTIONS 1. Remove any items necessary for easy access to the pilot (for example: logs, screens, etc.). 2. 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. 3.

  • Page 31: Troubleshooting

    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. OBSERVED PROBLEM POSSIBLE CAuSE REMEDY When ignitor button is 1. Ignitor electrode positioned wrong. 1 Replace ignitor. pressed, there is no spark at ODS/pilot.
  • Page 32 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. OBSERVED PROBLEM POSSIBLE CAuSE REMEDY ODS/pilot lights, but flame 1.

  • Page 33: Replacement Parts

    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 34: Replacement Parts List

    REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. BURNER ASSEMBLY 18NB 24NB Item Natural Propane Natural Propane Piezo Ignitor 1D0503 1D0503 1D0503 1D0503 Piezo Wire 00K063 00K063 00K063 00K063 Burner 81D00 81D010 81D0515 81D050 Control Valve 1D067 1D068 1D067 1D068 ODS Pilot Assembly...

  • Page 35: Logs

    REPLACEMENT PARTS LIST REPLACEMENT PARTS ARE AVAILABLE THROUGH YOUR RETAILER. HIGHLAND OAK REFRACTORY LOGS Item Description HO18-R HO18-F HO24-R HO24-F HO30-R HO30-F ember Chunk 81D0010 81D003 81D0110 81D0109 81D006 81D0050 Right Front Log 81D0011 81D0035 81D0019 81D003 81D007 81D0051 Right Rear Log 81D001 81D0036 81D000 81D00 81D008 81D005...
  • Page 36 MASSACHUSETTS rESIDENTS oNLy: PLEASE rEAD AND FoLLoW THESE SPECIAL rEQUIrEMENTS NoTE rEGArDING VENTED ProDUCTS This product must be installed by a licensed plumber or gas fitter when installed within the Commonwealth of Massachu- setts. Any residence with a direct vent product must have a CO detector installed in the residence. Installation of the fireplace or vented gas log in the State of Massachusetts requires the damper to be permanently removed or welded in the fully open position.
  • Page 37 SPECIAL REQuIREMENTS CONTINuED 2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS certified. 3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for the horizontally vented gas fueled heating appliance or equipment.
  • Page 38 NOTES 81D0108...

  • Page 39: Warranty

    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 40 MHSC 19 Cleveland Drive • Paris, Kentucky 0361 www.mhsc.com AUGUST 2008 81D0108 • Rev. 3...

This manual is also suitable for:

24nb

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