Monessen Hearth operating instructions Model NB18, NB24, Read and Save These Instructions

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UNVENTED GAS LOG

HEATER or

VENTED DECORATIVE

APPLIANCE

INSTALLATION AND OPERATING

INSTRUCTIONS

MODEL: NB18, NB24

Natural Gas or Liquid Propane

Control Type: Millivolt

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.

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.

READ AND SAVE THESE INSTRUCTIONS

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Contents Read and Save These Instructions Model NB18, NB24What to do if YOU Smell GAS Contents Installer Important Safety InformationOwner Massachussetts Residents only Getting Started What YOU will Need for InstallationMake Sure YOU have Received ALL Parts Product Features and Specifications Codes General Installation InformationAdequate Combustion and Ventilation AIR BTU / Hr = Model Fireplace and Hearth DimensionsHeight of Restriction Minimum Depth of Fireplace/Firebox Placement in a Fireplace with a Restrictive BarrierSidewall and Ceiling Clearances Clearances and Height RequirementsClearances and Height Requirements Measuring Heat Resistant Material for Mantel Minimum Mantel Clearance with No Hood -NB18 Mum of 10 at a minimum of 28 above the opening Minimum Clearance above Combustible Flooring Floor ClearanceBefore Fully Installing the Unit Installing Vented ApplicationsBefore Installing the Appliance Damper Stop InstallationAssembly Procedure Installing Vented ApplicationsPlacing and Securing Appliance Flexible Tube Manual Shutoff Gas Supply Inlet Valve Connecting the GASMillivolt Valve Control Figure Checking GAS PressureConnecting Optional Wall Switch or Thermostat Electrical Wiring MillivoltATE Checking System Operation Connecting Remote ReceiverComplete Millivolt System Check Placing Rock Wool LOG PlacementPlacing Log #3 Cast Iron Grate Installation EMBER, GRATE, and Rock InstallationPlacing Flickering Embers Placing the Decorative RockChecking the Pilot Flame Flame AppearanceMillivolt Control and Thermostat Control Operating Instructions Checking the Burner FlameWhat to do if YOU Smell GAS Operating InstructionsTo Turn OFF GAS to Heater Cleaning and Servicing Operating Instructions and Cleaning and ServicingObserved Problem Possible Cause Remedy TroubleshootingODS/pilot lights, but flame Burner Assembly Replacement PartsAccessories Sold Separately Replacement Parts ListDescription Qty BO18-R BO18-F BO24-R BO24-F BO30-R BO30-F Berkley OAK Refractory LogsCarbon Monoxide Detector Requirements Special Requirements 81D0107 81D0107 Five Year Warranty Lifetime WarrantyBasic Warranty