Monessen Hearth CL)NVC/PVC, PF, CR AIR Restrictor Adjustment, Venting Height feet Grille Opening

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Designer Series Gas Fireplaces

AIR RESTRICTOR ADJUSTMENT

The fireplace is equipped with a restrictor plate that is located inside the top chamber of the fireplace. Depending upon the vent configuration, you may be required to adjust the restrictor position

1.Remove glass frame. Refer to Glass Frame Removal, Page 31.

2.Using a Phillips screw driver, loosen the screw that secures the air restrictor. Do not back the screw all the way out.

3.Slide the baffle on top of the restrictor plate to block a percentage of the grille opening. Refer to the chart below for recommended settings.

Note: All the settings above are based on the testing at the factory and provided as a guide for startup. On certain applications, adding a restrictor disc will help to achieve flame aesthetics.

Flue Opening

Air Restrictor

FP2311

Figure 48 -

Adjust Baffle on Air Restrictor

Plate

Air Restrictor

Screw

(Slide Left and Right)

Venting Height (feet)	% of Grille Opening
8 to 20	100% (Factory Setting)
20 to 30	75%
30 to 40	50%

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42D0200

Image 34

Contents Designer Series Direct Vent Gas Fireplace Designer Series Gas Fireplaces Installer OwnerPlease Read the Following Carefully Important Safety Information and code approvalCode Approval Never connect unit to private nonProduct features High ElevationsFireplace Dimensions Fireplace Framing Peninsula & Corner Framing SpecificationsPeninsula Framing See-through Framing Specifications Framing FireplaceMantel clearances ClearancesClearances to combustibles Finishing MaterialInstallation and Operating Instructions Fireplace locationInstallation SecurE fireplace to floorOptional TOP Vent installation Optional top vent applicationInstallation precautions VentING installationVenting Clearances 42D0200 Canadian Installations1 US Installations2 VentING installationGeneral Venting Information Termination Location Dimensions How To Use The Vent GraphFeet Rear Wall Vent installation Top View Flat InstallationInstalling Horizontal Vent Cap Horizontal termination configurations Adhered toHorizontal termination configuration ExampleBelow Grade Installations Vertical through-the-roof applications Installation for vertical termination Flat ceiling installationConnect a section of pipe and extend up through the hole Installation items needed Fireplace installationInstalling gas piping to fireplace / burner system location Check gas typeNatural Gas Propane/LPLabel all wires before disconnecting when Electrical WiringServicing controls. Wiring errors can cause Remote Wall mounted Switch Electrical installationDo not connect wall switch to 110 V circuit Remote Wall Switch Electronic Pilot Ignition WiringOptional DC Remote Systems Glass removal Glass Frame RemovalLOG Placement Install logs and rock wool ember material in fireboxLog placement Log placement Install Top Log #6AIR Restrictor Adjustment Venting Height feet Grille OpeningInitial lighting What to do if YOU Smell GASNever use an open flame to check for gas leak Never check for gas leak with open Approved leak testing methodFlame Lighting the burner Main burner switchPilot position Firebox cleaning Cleaning and maintenanceCleaning glass Venting systemTroubleshooting Standing Pilot IgnitionElectronic Ignition TroubleshootingYES Glass replacement and blower General troubleshootingOptional Blower accessory Blot Logs Replacement partsDescription Qty Natural Propane Replacement Parts are Available Through Your Retailer Fuel Conversion Kits Millivolt Natural Gas to LP Standing Pilot Millivolt ControlLP to Natural Gas Replacement Parts Electronic IgnitionReplacement Parts Vent ComponentsDesigner Series Gas Fireplaces Designer Series Gas Fireplaces Designer Series Gas Fireplaces Carbon Monoxide Detector Requirements Basic Warranty Lifetime WarrantyFive Year Warranty If Warranty Service is NeededMhsc Model EnerGuide Ratings Fireplace Efficiency %