NESTOR MARTIN M43 Manual Del Usuario página 48

2.3. Above a Fireplace.
In this type of installation, the chimney connector rises
from the stove, turns no greater than 45ᵒ, and then
goes into the fireplace chimney. The liner of the
fireplace chimney should extend at least to the point at
which the chimney connector enters the chimney.
Follow all the guidelines for installing a chimney
connector into a freestanding masonry chimney, and
pay special attention to these additional points:
Double check the connector clearance from
-
the ceiling: 18" (45 cm) minimum.
The fireplace damper or register plate must be
-
closed and sealed to prevent room air from
being drawn up the flue, thereby reducing the
draft.
However, it must be possible to re-open the
damper or have an access plate in a register
plate to inspect the chimney.
Fig. 4. – Chimney connector enters chimney above the fireplace
2.4. Wall Pass-Throughs
Whenever possible, design your installation so that the
wall connector does not pass through a combustible
wall. If you are considering a wall pass-through in your
installation, check with your building inspector before
you begin. Also check with the chimney connector
manufacturer for any specific requirements.
Accessories are available for use as wall pass-throughs.
If using one of these, make sure it has been tested and
listed for use as a wall pass-through. We recommend
the following guidelines when passing chimney
connectors through combustible walls:
- Cut away all combustible material in the wall a
sufficient distance from the single wall connector,
to provide the required 12" (300 mm) clearance for
the connector. Any material used to close the
opening must be non-combustible (as in Fig. 5
below).
- Using a section of double-wall chimney with a 9"
(230 mm) clearance to combustibles.
- Placing a chimney connector pipe inside a
ventilated sleeve, which is then separated from
combustibles by 6" (150 mm) of fiberglass insulating
material.
Fig. 5. – An example of a correct Wall pass-through.
48