Vermont Castings Vigilant II 2310 Homeowner's Installation And Operating Instructions Manual page 5

A more common cause of overdraft is inadequate main-
tenance, such as worn gasket allowing uncontrolled air to
enter the stove. Following recommended maintenance
procedures will ensure consistent stove performance.
Following the stove manufacturer's recommendation on
both chimney size and height will also help ensure ad-
equate chimney flow capacity. Flow capacity measures
the ability of the chimney to evacuate combustion gases
quickly. Even the strongest draft cannot overcome an
insufficient flow capacity; the result is a back up of com-
bustion gases in the chimney which forces smoke out of
chimney connector joints or the stove itself. Remember,
the Vigilant and the chimney must function as a unit. For
optimum performance, they must be sized properly for each
other. Your Vermont Castings Authorized Dealer can help
you assess your existing chimney or plan a new one for
best stove operation.
Chimney guidelines
Do NoT CoNNeCT To aNy aIR DISTRIbU-
TIoN DUCT oR SySTeM.
New Chimneys
Both masonry and prefabricated metal chimneys work
well.
Prefabricated Double-
wall Insulated Chimney
Tile-lined
Masonry
Chimney
Fig. 2 Chimney types.
A new masonry chimney should be constructed to conform
to the standards of your local building code or a recognized
ST241
national code. Masonry chimneys must be lined with code-
chimney types
12/13/99 djt
approved masonry or pre-cast refractory tiles, stainless
steel pipe suitable for use with coal, or a code-approved
poured-in-place liner. The chimney must have a tight seal-
ing clean-out door.
A new prefabricated metal chimney should be one tested
and listed for use with solid-fuel burning appliances to the
High-Temperature (H.T.) Chimney Standard UL-103-1985
(2100° F.) and have interior walls especially designed for
use with coal-burning stoves. Be sure to follow the chim-
ney manufacturer's instructions exactly when passing the
chimney through a combustible wall or ceiling. Special ac-
cessories may be necessary for this type of installation.
2000898
The chimney should extend at least 3 feet above the high-
est point where it passes through a roof, and at least 2 feet
higher than any portion of a building within 10 feet.
For proper draft and good performance, any chimney used
with a Vermont Castings wood or coal burning stove should
extend at least 16 feet above the flue collar of the stove.
0 To 10'
2' Min.
Reference
Point
Fig. 3 The 2'-3'-10' chimney rule.
An existing masonry chimney may work well, but be sure
to have it carefully inspected before using it. Defects may
have gone unnoticed if the chimney previously was used
only occasionally. Defects must be repaired before the
chimney is used with your stove. If you are not sure that
you can make the inspection yourself, your local profes-
sional chimney sweep, building inspector, or fire inspector
will be able to make the inspection or direct you to someone
who can.
The chimney should be thoroughly cleaned before being
used with your stove.
First, check to see that the chimney has a lining. Do not
use an unlined chimney. Your local Vermont Castings
Authorized Dealer or chimney sweep can help you with
information about approved chimney lining systems. In
ST241
addition, look for and repair (if necessary) these defects:
(Fig. 4)
A. Improper chimney height and roof clearance; check
local building codes for proper construction.
B. Chimney cap deterioration; rebuild.
C. Creosote stains indicate flue damage; inspect and re-
pair.
D. Blockage within flue; remove.
E. Improper clearance between chimney and combustible
materials. Generally, a clearance of 2" (50 mm.) is re-
quired to all combustible walls and framing members;
check local codes.
F. Improper clearance between smoke chamber and ad-
jacent framing members; check local codes.
G. Creosote accumulation; chimney needs thorough
cleaning.
Vermont Castings Vigilant
3'
0 To 10'
Min.
2' Min.
3'
Min.
existing Chimneys
AC617
RLTSKC8
2/11/98
®
AC617
5