Lennox Hearth MPD35ST-NM, MPD35ST-PM This appliance is not designed to burn wood. Any attempt to

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10.Place Log (E) as shown in Figure 11.

Position round end of log (E) against the notch of log (D) here. Two charred spots face the front

E

D

C

Position Small End of

(Valve Access Side)

Log (E) on The Notch of

 

 

 

 

 

 

Log (C) Here

Figure 11

11.Place Log (F) as shown in Figure 12.

Log (F) sits in front of the grate

WARNING

Logs get very hot and will remain hot up to one hour after gas supply is turned off. Handle only when logs are cool. Turn off all electricity to the appliance before you install grate and logs.

BURNER ADJUSTMENTS (QUALIFIED TECHNICIANS ONLY)

If the air shutter openings closed too far, sooting may develop. Sooting is indicated by black puffs developing at the tips of very long orange flames. Sooting results in black deposits forming on the logs, appliance inside surfaces and on exterior surfaces adjacent to the vent termination. Sooting is caused by incomplete combustion in the flames and lack of combustion air entering the air shutter opening. To achieve a warm yellowish-orange flame with an orange body that does not soot, the shutter opening must be adjusted between these two extremes.

Air Shutter Adjustment Guidelines

•If there is smoke or soot present, first check the log set positioning to ensure that the flames are not impinging on any of the logs. If the log set is properly positioned and a sooting condition still exists, then the air shutter opening should be increased.

•The more offsets in the vent system, the larger the air shutter opening will need to be.

•An appliance operated with the air shutter opened too far, may have flames that appear blue and transparent. These weak, blue and transparent flames are termed anemic.

•Propane models may exhibit flames which candle or appear stringy. If this is present and per- sists, adjust the air shutter to a more closed position, then operate the appliance for a few more minutes to ensure that the flame normalizes and the flames do not appear sooty.

(Valve Access Side)

F Figure 12

WARNING

This appliance is not designed to burn wood. Any attempt to

Flame Appearance & Sooting

Proper flame appearance is a flame which is blue at the base andbecomesyellowish-orangein the body of the flame. When the applianceisfirstlit,theentireflame maybeblueandwillgraduallyturn yellowish-orange during the first

15minutes of operation. If after period the flame stays lowered blue, or if the flame is orange with evidenceofsooting(blacktip),the air shutter opening may need to be adjusted.

Figure 13 *- Burner Flame Appearance

Vermiculite

do so could cause irreparable damage to appliance and prove hazardous to your safety.

WARNING

If logs are not installed according totheloginstallationinstructions, flameimpingementandimproper combustioncouldoccurandresult in soot and/or excessive produc- tion of carbon monoxide (CO), a colorless, odorless, toxic gas.

WARNING

DO NOT attempt to install the logs untiltheapplianceinstallationhas been completed, the gas line con- nectedandtestedforleaksandthe initial burner operation has been checked out.

The following chart is provided to aid you in achieving the correct air shutter adjustment for your installation.

Air Shutter Adjustment Guidelines:

Amount of

Flame

Air Shutter

Primary Air

Color

Adjustment

 

 

 

 

 

 

 

If air shutter is

Flame will

Air shutter

closed too far

be orange

gap should be

 

 

 

 

 

 

increased

 

 

 

 

 

 

If air shutter is

Flame will

Air shutter

open too far

be blue

gap should be

 

 

 

 

 

 

decreased

 

 

 

 

 

 

WARNING

Air shutter adjustment should only be performed by a qualified professional service technician.

WARNING

Ensure front glass panels are in place and sealed during adjust-

CAUTION

The air shutter door and nearby appliance surfaces are hot. Exer- cise caution to avoid injury while adjusting flame appearance.

CAUTION

Carbon will be produced if the air shutter is closed too much. Any damage due to carboning result- ing from improperly setting the air shutter is not covered under the warranty.

Burner Air Shutter Adjustment Procedure

1. Locate adjustment rod and adjust air shutter to the standard setting as shown in Figure 14 (adjustment rod is located in the lower control compartment). Note: Rotating the adjustment rod counterclockwise decreases air and clockwise increases air.

mentNOTE:.DIAGRAMS & ILLUSTRATIONS NOT TO SCALE.

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Contents MPD35ST-NM MPD35ST-NE MPD35ST-PM 875,025M REV. NC 04/2005Faire la demande. Numéro de la pièce 875,025CF Listing AgencyCongratulations Manifold Gas Supply Pressure Electronic models Fuel # Fixed Burn-in PeriodOrifice Sizes Sea Level to High Altitude All Models Burner Orifice Sizes all models Elevation Natural PropaneOperation and Care of Your ApplianceSIT Millivolt Millivolt AppliancesSee Maintenance Schedule, MaintenanceSee Figure Front Glass Enclosure Panel, Removal and InstallationCA B LOG SET IdentificationLOG SET ReferenceRead LOG Warnings on page 9 Before Proceeding Placement of Glowing EmbersRemove front glass enclosure panel from appliance Against The GrateAir Shutter Adjustment Guidelines Burner Adjustments Qualified Technicians onlyThis appliance is not designed to burn wood. Any attempt to Flame Appearance & SootingElectronic Pilot Assembly Warranty Replacement Parts Wiring DiagramsProduct Reference Information Accessory ComponentsArch Design Arch Pane Clean Face Panel KitsSquare Louvers KitsArch Door Kits Screen Heat Guard KitForced Air Kit Door Frame KitsWhat to do if YOU Smell GAS To Turn OFF GAS to ApplianceWhat to do if YOU Smell GAS SwitchLighting Instructions Close lower control compartment doorMaintenance Schedule Maintenance Task Accomplishing Person ProcedureWhile HOT Symptom Possible Causes Corrective Action TroubleshootingOperation, if the standard burner PositionTroubleshooting Procedure Electronic Ignition System Description Where Used Replacement Parts MPD35STPart/Cat Qty Description Where Used 20 P/N 875,025M REV. NC 04/2005

MPD35ST-NE, MPD35ST-PM, MPD35ST-NM specifications

The Lennox Hearth MPD35ST series, which includes the MPD35ST-NM, MPD35ST-PM, and MPD35ST-NE models, is designed for homeowners seeking superior heating solutions with aesthetic appeal. These multi-position direct vent gas fireplaces combine efficiency with advanced technology, ensuring that both performance and style are prioritized in any living space.

One of the standout features of the MPD35ST series is its innovative Direct Vent technology. This system draws air from the outside for combustion, eliminating the need for indoor air and thereby reducing energy consumption and improving indoor air quality. This feature not only enhances efficiency but also provides a safe and comfortable environment for your home.

The MPD35ST fireplaces come with a variety of design options to suit different decor styles. With a variety of front options, including sleek and modern designs or classic and rustic looks, homeowners can customize their fireplace to match their aesthetic preferences. The 'No Media' (NM) style offers a clean and minimalist contemporary design, while the 'Panel Media' (PM) and 'Enhanced Media' (NE) styles feature options for adding decorative media, such as pebbles or logs, that enhance the visual ambiance of the fire.

These units also incorporate advanced heating technologies, featuring high-efficiency burners that produce significant heat output with minimal energy consumption. With adjustable flame settings, users can control the intensity of the heat while enjoying the mesmerizing flicker of the flames. This flexibility allows homeowners to create a cozy environment tailored to their comfort needs.

In addition, the Lennox MPD35ST series is designed with user-friendly controls that simplify operation. Integrated remote controls allow for easy adjustment of the temperature and flame settings from the comfort of your seat. Safety is a paramount consideration; these fireplaces are equipped with built-in safety shut-off systems that ensure worry-free operation.

Furthermore, the construction of the MPD35ST series focuses on durability and longevity. Made from high-quality materials, these fireplaces are built to withstand the test of time, providing both reliable performance and an attractive focal point in any room.

In summary, the Lennox Hearth MPD35ST-NM, MPD35ST-PM, and MPD35ST-NE models epitomize modern fireplace design. With their energy-efficient technologies, customizable aesthetic options, and user-friendly features, they are an excellent choice for homeowners looking to enhance their living spaces with both comfort and style.
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