White Mountain Hearth PONDEROSA LS-18P-2, Installation Instructions And Owner'S Manua

25739-3-1013

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Proper Log Placement

Log placement is critical to proper burner performance. Logs must 

be correctly positioned onto the burner. The photos in this manual 

show the proper pinned position for logs on this set. Owners need to 

be shown proper log placement and instructed not to move the logs. 

Logs must fit firmly onto the burner when positioned as shown in 

the photos. Malformed logs or logs with sloppy pin holes must be 

replaced.

Proper Placement of Glowing Embers and Decorative Lava Rock

Glowing embers can be added to burners for a glowing ember 

effect. It must be positioned only on the front portion of the burner. 

The photos in this manual  show the proper placement of glowing 

embers.
Decorative lava rock or small wood pieces should never be placed 

on the burner. These items are only for placement on the floor of 

the fireplace or firebox.

Proper Primary Airflow into Burner

For proper burner operation and flame appearance, the flow of 

primary air into the venturi tube, located on the rear of the burner, 

must not be reduced. This flow of air is reduced if dirt, lint or other 

obstructions build-up around or inside the venturi. Any obstruction 

in the venturi tube area must be removed. The flow of air into the 

venturi is also reduced if the gas orifice isn’t centered in the venturi 

inlet and/or is not aligned with the venturi. Any misalignment of the 

burner orifice may be corrected by bending the shutter cap holding 

the orifice to the inlet of the venturi tube.

ceiling fans, Portable fans or Logs Installed Near cold Air 

returns

Ceiling  fans  or  oscillating  floor  type  fans  need  to  be  monitored 

during the operation of vent-free logs. If the air blows directly 

into the flame causing it to impinge on the log set, or firebox, it 

should be turned off or redirected. Ceiling fans could be reversed 

to possibly eliminate flame impingement, and the floor fan could 

be redirected. Upon installation, be aware of any cold air returns 

or vents in the proximity of the log set. Any draft created around 

a vent-free log set can cause the flame to impinge on the log and 

create a sooting situation.

wArNINg: 

Do not allow fans to blow directly into the fireplace. 

Avoid any drafts that alter burner flame patterns.

wArNINg: 

Do not use a blower insert, heat exchanger insert or 

other accessory not approved for use with this heater.

candles

Avoid the use of scented or decorative candles while the log set is 

in operation. Candles produce a residue in the air that creates a 

soot like substance. Burning candles while the log set is operating 

magnifies the problem. It should be noted that candles, in general, 

produce soot. The amount of time burned and the quantity of candles 

burned will determine the amount of soot produced and deposited.

Make Owners Aware of Proper Log Set Operation

Properly installed and properly maintained log sets do not deposit 

soot on the logs. If users see soot appear on a log, call for service. 

Do not continue to operate the log set.

Sunken Fireplace

If installing this unit into a sunken fireplace, you must raise the 

floor to insure adequate airflow and guard against sooting. Raise 

fireplace floor using a non-combustible material, which is secure.

glass Doors

Make sure that glass doors are open during all operations of the 

logset. The opening of the glass door frame should be the dimension 

used for the minimum front opening of the firebox.

woodburning fireplaces

The interior of the firebox and the chimney should be cleaned and 

free of all creosote before installing a gas burning log set. Creosote 

will soften when heated and can drop on the logset causing odors 

and possibly sooting.

wArNINg: 

Before installing in a solid-fuel burning fireplace, the 

chimney flue and firebox must be cleaned of soot, creosote, ashes 

and loose paint by a qualified chimney cleaner.

Qualified Installing Agency

Installation and replacement of gas piping, gas utilization equip

-

ment or accessories and repair and servicing of equipment shall be 

performed only by a qualified agency. The term "qualified agency" 

means any individual, firm, corporation, or company that either in 

person or through a representative is engaged in and is responsible 

for (a) the installation, testing, or replacement of gas piping or (b) the 

connection, installation, testing, repair, or servicing of equipment; 

that is experienced in such work; that is familiar with all precautions 

required, and that has complied with all the requirements of the 

authority having jurisdiction.

The installation must conform with local codes or, in the absence of 

local codes, with the 

National Fuel Gas Code, ANSI Z223.1/NFPA54

.*

*Available from the American National Standards Institute, Inc. 11 

West 42nd St., New York, N.Y. 10018.

State of Massachusetts: 

The installation must be made by a 

licensed plumber or gas fitter in the Commonwealth of Mas

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sachusetts.

Sellers of unvented propane or natural gas-fired supplemental 

room heaters shall provide to each purchaser a copy of 527 

CMR 30 upon sale of the unit.

In the State of Massachusetts, unvented propane and natural 

gas-fired space heaters shall be prohibited in bedrooms and 

bathrooms.

IMPORTANT INSTALLATION GUIDELINES

GENERAL INFORMATION