Lennox Hearth T150C operation manual Installation, Reduced Masonry Structure Clearance Alcove

PLANNING YOUR INSTALLATION

REDUCED MASONRY STRUCTURE CLEARANCE (ALCOVE)

Your stove can be installed in a masonry structure with reduced clearances if the structure was built to National Building Code for fireplaces and chimneys (UBC 37).

The firebox of the masonry structure must be of ade- quate size to allow a minimum of 6" (152 mm) clearance to the sides and top of the stove and 2" (51 mm) clear- ance to the rear. All stove models must be installed on their original listed legs or base unless otherwise speci- fied by OMNI Testing Laboratory.

The minimum venting requirement is a listed chimney liner that extends from the flue collar of the stove to the first tile liner of the chimney where it is sealed. All joints and connections must be made airtight to prevent leaking and downdrafts.

PROTECTED WALL CLEARANCE

Some local codes will allow reduced clearances when the stove is installed adjacent to a protected wall system. Your local building official must approve the variance. Normally, the protected wall system is defined as a non- combustible material with a minimum of 1" (25.4 mm) air space behind. Check your local building codes or with a qualified installer (Ref. NFPA 211).

VENTILATION REQUIREMENTS

THE FRESH AIR REQUIREMENTS OF THIS APPLI- ANCE MUST BE MET WITHIN THE SPACE WHERE IT WILL BE INSTALLED.

Ventilation is essential when using a solid fuel burning heater. The combustion process of this heater uses oxy- gen from inside the dwelling and it may be necessary to open a window or install a vent to provide make-up air into a dwelling that is well insulated (modern construction standards have resulted in homes that are highly energy- efficient and that allow little heat loss and air transfer). Other appliances in the dwelling also contribute to re- moving air from the dwelling (i.e. clothes dryers, exhaust fans, fireplaces, and other fuel burning appliances). If the available fresh air delivery in the dwelling is insufficient to support the demands of these appliances, problems can result (i.e. Excessive negative pressure can develop in the dwelling which will affect the rate at which this appli- ance can draft [See Draft Requirements, page 9], icing can develop in some environments).

INSTALLATION

INSTALLING (OPTIONAL) MARBLE ACCENTS

See Optional Accessories, page 25 for ordering information.

Important Note; Optional marble cannot be used if tem- perature probe is used.

Marble is a natural product and therefore each piece will have its own unique character. Marble can be scratched so care should be taken to avoid putting heavy or rough objects (trivet/steamers) on the surface. If the marble should become scratched, the scratch may be removed or diminished by polishing it with jewelers rouge (which can be purchased at many hardware stores). Do not in- stall the marble before curing the paint.

The marble set consists of 2 pieces. A large piece that fits onto the stove top and a smaller piece that fits onto the ashlip (located below the fuel door).

Installation Steps:

Install the ceramic fiber blanket, gasket strips and marble set as follows:

Note: The fiber blanket and gasket strips are provided with the

stove: The marble sets are optional accessories.

1.Using scissors cut the ceramic fiber blanket so that it fits into the recess of the stovetop.

2.Place the top marble piece onto the ceramic fiber blanket.

3.Place the gasket strips into the recess of the ashlip so that they are evenly spaced. This will slightly ele- vate the marble so that it is not making direct surface contact. Note: Insulation is not required in this area.

4.Place the ashlip marble onto gasket strips in ashlip recess.

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