Napoleon Fireplaces NZ25 manual Hearth Extension, Outside Combustion AIR, Mantle Clearances

Do not place insulation into the enclosure around the fire- place or the chimney. Placed in this space, it may cause

HEARTH EXTENSION

7

the adjacent wood to overheat and catch on fire.

Combustible materials may be installed flush with the front of the fireplace but must not cover any of the black painted surface of the fireplace front. Non-combustible material (brick, stone, or ceramic tile) may protrude. Pull out the nailing tabs, attached on either side of the fireplace and secure to the 2x4 framing to facilitate drywall installation.

Do not build shelves or cupboards into the area above the fireplace. Do not add a hood.

FIGURE 6

OUTSIDE COMBUSTION AIR

The Napoleon Model NZ25 has the option of taking out- side air directly into the fireplace through the opening on the left hand side or taking inside air through the lower front louvres or a combination of both.

If the optional fresh air kit (available through your Napo- leon / Wolf Steel Ltd. dealer) is installed, it must not draw air from the attic or garage. It may only come from outside the house. The maximum length of the 4 inch air duct is 20 feet; thereafter enlarge the duct to a 6 inch diameter.

Decide on the most convenient location for the fresh air inlet duct and hood which may be installed above or below floor level.

Make a 5 inch hole in an outside wall of the house. From outside, place the fresh air hood into the hole, open side down.

At each end, carefully pull back the insulation sleeve ex- posing the flexible duct. Place the insulated flexible duct over the fresh air hood and over the fireplace outside air connector. Carefully push the insulation sleeve back over the duct. Using the clamps, fasten the insulated duct into place on both sides. For outside air only, re-install the in- side air cover plate, shown in FIGURE 22, to cover the con- trol box inside air opening. See Section on Combustion

Air Control.

MANTLE CLEARANCES

Mantle clearance can vary ac- cording to the mantle depth.

FIGURE 7

An acceptable 16" x 50" non-combustible (ie: brick, stone or ceramic tile) hearth extension must be installed. Ensure that the gap between the fireplace and a factory-built hearth extension is sealed with sand/cement grout or covered with a metal strip (or both) to prevent sparks and embers from falling into this area. A raised hearth together with the fireplace built on a raised platform is recommended for easier wood loading and fire viewing.

A chimney venting the fireplace shall not vent any other appliance.

The minimum overall chimney height from the top of the fireplace is 15 feet.

Factory-built chimney systems for use in dwell- ings constructed for three or more families must be enclosed above the room in which the fireplace is located. This enclosure must have a fire resist- ance rating equal to or greater than that of the floor or roof assembly through which they pass.

If the chimney system is enclosed within the attic area, a rafter radiation shield is required.

The chimney should not be built with an offset an- gle in excess of 45o.

The chimney must extend at least 3 feet above its point of contact with the roof and at least 2 feet higher than any wall, roof or building within 10 feet. Figure 13.

If the chimney extends more than 5 feet above the roof, it must be secured using a roof brace or guide wires.

Ensure that minimum clearances are maintained

Portions of the chimney that extend through ac- cessible spaces must always be encased to avoid personal contact with the chimney and thereby avoid damage to the chimney.

A raincap must be installed to avoid internal dam- age and corrosion.

The chimney must be supported at a maximum of 20 foot intervals (approx. 200 lbs/20 ft).

WS-415-71 /09.07.00