Lennox International Inc BV4000C operation manual Factory Built Fireplaces, Masonry Fireplaces

PLANNING YOUR INSTALLATION

FACTORY BUILT FIREPLACES

This appliance is approved for installation into a listed factory built solid fuel burning fireplace. The fireplace firebox must accept the insert without modification other than re- moving bolted or screwed together pieces such as smoke shelf/deflectors, ash lips, screen or door tracks and damper assemblies, that must be reinstalled to re- store the fireplace to its original operating condition if the insert is removed and not replaced. The removal of any part must not alter the integrity or outer shell of the pre-engineered fireplace cabinet in any way.

Venting Requirements for factory built fireplace:

The fireplace damper must be secured in the open position. This appliance requires the use of a 6” diameter flex or rigid, UL1777 listed 2100° HT liner or equivalent. The liner must extend from the flue outlet of the appliance to termination. Do not face seal over fireplace chimney cooling air systems. Offsets can be handled with an offset adapter (it aligns starter pipe with fireplace flue). For more information on the offset adapter, see pages 9 and 25.

WARNING: Do not substitute the heat rated 2100° HT liner with any other type line or a fire may result causing property damage, personal injury or loss of life.

MASONRY FIREPLACES

This appliance is approved for installation into a masonry fireplace built to UBC Chapter 37 standards. Do not remove brick or mortar form the masonry fireplace to accommodate this appliance.

Venting Requirements for masonry fireplace:

The fireplace damper must be secured in the open position. As a minimum, a flue extension past the fireplace header is required. A preferred installation is a positive flue connection (sealing the throat of the chimney). This appliance requires the use of a 6” diameter flex or rigid single wall pipe, minimum 24/25 MSG black or blued steel connector pipe (stainless steel recommended). Offsets can be han- dled with an offset adapter (it aligns starter pipe with fireplace flue). For more information on the offset adapter, see pages 9 and 25.

FIREPLACE CHIMNEY MAXIMUM SIZE TO ENSURE PROPER DRAFT

The fireplace insert flue size is 6 inches diameter, which is approximately 28 square inches, the minimum. The maximum flue size should be no more than (3) three times the cross sectional area of the size of the fireplace insert flue collar. In this case, that would be no larger than a 10 inch diameter stack (area = approx. 85 sq. inches).

Note: Formulas for calculating area: Calculating area of a circle:

πx r2 = Area (π = 3.1416, r = 1/2 diameter)

To calculate area of square or rectangle:

Width x Depth = Area

Notes:

!It may be necessary to use a full-length liner to achieve adequate draft for the appliance. A draft gauge should read more than .04 W.C.I, but less than .08 W.C.I. for optimum performance.

!This appliance is approved for all heatform style fireplaces (masonry fireplace with a metal fire- box liner).

!Measure fireplace size to make certain the insert will

fit before considering the installation.

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