Monessen Hearth NB24, NB18 Installing Vented Applications, Placing and Securing Appliance

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INSTALLING VENTED APPLICATIONS

PLACING AND SECURING APPLIANCE

WARNING

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. Grate movement could cause a gas leak.

Special care is required if you are installing the unit into a sunken fireplace. You must raise the fireplace floor to allow access to gas log controls. This will insure adequate air flow and guard against sooting. Raise the fireplace floor using noncombustible materials, as described in Placement in a Fireplace with Restrictive Barrier on page 10.

ASSEMBLY PROCEDURE:

1.Center the gas log unit on the fireplace or firebox. Make certain the front of the burner sits inside the front edge of the fireplace or firebox.

2.Anchor holes are located on the right and left sides of the unit. After centering the burner correctly, mark the hole posi- tions on the fireplace/firebox floor. Drill two (2) 5/32" diameter holes approximately 11/2" deep.

3.Anchor the burner to the fireplace/firebox floor using the screws provided. See Figure 14.

Proper installation of the grate is essential to prevent any movement of the gas logs and controls during operation.

Screw

Screw

Anchor Hole

Figure 14 - Securing Heater to Floor of Fireplace/Firebox

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81D0107

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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 = Fireplace and Hearth Dimensions ModelPlacement in a Fireplace with a Restrictive Barrier Height of Restriction Minimum Depth of Fireplace/FireboxClearances and Height Requirements Sidewall and Ceiling ClearancesClearances 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 Floor Clearance Minimum Clearance above Combustible FlooringBefore Installing the Appliance Installing Vented ApplicationsBefore Fully Installing the Unit Damper Stop InstallationInstalling Vented Applications Assembly ProcedurePlacing and Securing Appliance Connecting the GAS Flexible Tube Manual Shutoff Gas Supply Inlet ValveChecking GAS Pressure Millivolt Valve Control FigureElectrical Wiring Millivolt Connecting Optional Wall Switch or ThermostatATE Connecting Remote Receiver Checking System OperationComplete Millivolt System Check LOG Placement Placing Rock WoolPlacing Log #3 Placing Flickering Embers EMBER, GRATE, and Rock InstallationCast Iron Grate Installation Placing the Decorative RockFlame Appearance Checking the Pilot FlameMillivolt Control and Thermostat Control Checking the Burner Flame Operating InstructionsOperating Instructions What to do if YOU Smell GASTo Turn OFF GAS to Heater Operating Instructions and Cleaning and Servicing Cleaning and ServicingTroubleshooting Observed Problem Possible Cause RemedyODS/pilot lights, but flame Replacement Parts Burner AssemblyReplacement Parts List Accessories Sold SeparatelyBerkley OAK Refractory Logs Description Qty BO18-R BO18-F BO24-R BO24-F BO30-R BO30-FCarbon Monoxide Detector Requirements Special Requirements 81D0107 81D0107 Lifetime Warranty Five Year WarrantyBasic Warranty