Monessen Hearth NB18, NB24 operating instructions Important Safety Information, Installer, Owner

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IMPORTANT SAFETY INFORMATION

INSTALLER

Please leave these instructions with the appliance.

OWNER

Please retain these instructions for future reference.

WARNING

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.

•Do not allow fans to blow directly into the fireplace. Avoid any drafts that alter burner flame patterns.

•Do not use a blower insert, heat exchanger insert or other accessory, not approved for use with this heater where applicable.

1.Due to high temperatures, the appliance should be located out of traffic and away from furniture and draperies.

2.Children and adults should be alerted to the hazard of high surface temperature and should stay away to avoid burns or clothing ignition.

3.Young children should be carefully supervised when they are in the same room with the appliance.

4.Do not place clothing or other flammable material on or near the appliance.

5.Any safety screen or guard removed for servicing an appliance, must be replaced prior to operating the heater.

6.Installation and repair should be done by a qualified service person.

7.To prevent malfunction and/or sooting, an unvented gas heater should be cleaned before use and at least annually by a professional service person. More fre- quent cleaning may be required due to excessive lint from carpeting, bedding material, etc. It is imperative that control compartments, burners and circulating air passageways be kept clean.

8.CARBON MONOXIDE POISONING: Early signs of carbon monoxide poisoning are similar to the flu with headaches, dizziness and/or nausea. If you have these signs, obtain fresh air immediately. Have the heater serviced as it may not be operating properly.

9.The installation must conform with local codes or, in the absence of local codes, with the National Fuel Gas

Code, ANSI Z223.l/NFPA54.

10.This unit complies with the latest revision of ANSI Z21.11.2-2007 Unvented Heaters and also complies with ANSI Z21.60 Decorative Vented Appliances for Solid Fuel Burning Fireplaces. State and local codes may only allow operation of this appliance in a vented configuration. Check your state or local codes. For vented operation, see “Vented Instructions” in this manual.

11.Do not install the heaters in a bathroom or bedroom.

12.Correct installation of the ceramic fiber logs, proper location of the heater, and annual cleaning are neces- sary to avoid potential problems with sooting. Sooting, resulting from improper installation or operation, can settle on surfaces outside the fireplace. See log placement instructions for proper installation.

13.Avoid any drafts that alter burner flame patterns. Do not allow fans to blow directly into fireplace. Do not place a blower inside burn area of firebox. Ceiling fans may create drafts that alter burner flame patterns. Sooting and improper burning will occur.

14.Caution: Candles, incense, oil lamps, etc. produce combustion byproducts including soot. Vent-free appli- ances will not filter or clean soot produced by these types of products. In addition, the smoke and/or aromatics (scents) may be reburnt in the vent-free appliance which can produce odors. It is recommended to minimize the use of candles, incense, etc. while the vent-free appliance is in operation.

15.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 pro- vided. See page 8.

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Contents Model NB18, NB24 Read and Save These InstructionsWhat to do if YOU Smell GAS Contents Important Safety Information InstallerOwner Massachussetts Residents only What YOU will Need for Installation Getting StartedMake Sure YOU have Received ALL Parts Product Features and Specifications General Installation Information CodesAdequate 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 ClearanceDamper Stop Installation Installing Vented ApplicationsBefore Fully Installing the Unit Before Installing the ApplianceInstalling Vented Applications Assembly ProcedurePlacing and Securing Appliance Flexible Tube Manual Shutoff Gas Supply Inlet Valve Connecting the GASMillivolt Valve Control Figure Checking GAS PressureElectrical Wiring Millivolt Connecting Optional Wall Switch or ThermostatATE Connecting Remote Receiver Checking System OperationComplete Millivolt System Check Placing Rock Wool LOG PlacementPlacing Log #3 Placing the Decorative Rock EMBER, GRATE, and Rock InstallationCast Iron Grate Installation Placing Flickering EmbersFlame Appearance Checking the Pilot FlameMillivolt 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 Lifetime Warranty Five Year WarrantyBasic Warranty
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