10
20300058
VSW30 Series Wood Stove
INSTALLATION
exhaust restricted to its original volume, the air around the
liner will require time and heat energy to warm up.
Check your local codes. You may be required to install a
flue liner in any oversize masonry flue.
Masonry Chimney
Although masonry is the traditional material used for
chimney construction, it can have distinct performance
disadvantages when used to vent a controlled combustion
wood stove. Masonry forms an effective “heat sink”—that
is, it absorbs and holds heat for long periods of time.
The large mass however, may take a long time to become
hot enough to sustain a strong draft. The larger the
chimney (in total mass) the longer it will take to warm up.
Cold masonry will actually cool exhaust gases enough
to diminish draft strength. This problem is worse if the
chimney is located outside the home or if the chimney
flue has a cross-sectional volume much larger than the
stove outlet.
Pipe and Chimney Layout
Every bend in the flue will act as a brake on the exhaust
as it flows from the firebox to the chimney cap. The ideal
pipe and chimney layout is straight up from the stove
through completely straight chimney. Use this layout if at
all possible, as it will promote optimum stove performance
and simplify maintenance.
If the stovepipe must elbow to enter a chimney, locate
the elbow about midway between the stovetop and the
chimney thimble. This configuration lets the smoke speed
up before it must turn, keeps some pipe in the room for
heat transfer, and allows long-term flexibility for installing
a different appliance without relocating the thimble. There
should be no more than eight feet of single-wall stove pipe
between the stove and a chimney. Longer runs can cool
the smoke enough to cause draft and creosote problems.
Use double-wall stove pipe for longer runs.
Single Venting
Your stove requires a dedicated flue. Do not connect the
stove to a flue used by any other appliance. Chimney
draft is a natural form of energy and follows the path of
least resistance. If the stove is vented to a flue that also
serves open replace or another appliance, the draft will
also pull air through those avenues.
The additional airflow will lower the flue temperatures,
reduce draft strength and promote creosote
development; overall stove performance will suffer.
The effect is similar to that of a vacuum cleaner with a
hole in the hose. In some extreme instances, the other
appliances can even impose a negative draft and result
in a dangerous draft reversal.
ChIMNEY
Refer to chimney and chimney connector manufacturer’s
instructions.
Contact your local building authority for approved methods
of installation
1. This appliance requires a masonry or pre-manufactured
chimney listed to ULCS629 (Canada) and UL 103 HT
(USA) sized correctly.
2. If a masonry chimney is used it is advisable to have your
chimney inspected for cracks and check the general
condition before you install your unit. Re-lining may
be required to reduce flue diameter to the appropriate
functional size.
3. The chimney should extend at least 3' (914 mm) above
the highest point where it passes through the roof, and
at least 2' (610 mm) higher than any portion of a building
within 10' (3 m).
Figure 8
4. The chimney connector shall not pass through an attic,
roof space, closet, concealed space, floor, ceiling, wall
or any partition of combustible construction.
5. The minimum overall height of your chimney should be
15' (5 m) from the floor.
6. Do not use makeshift compromises during
installation.
0 to 10’
2’ Min.
3’ Min.
0 to 10’
2’ Min.
3’ Min.
ST1012
2 3 10 rule
Reference Point
ST1012
Figure 8 -
The 2'-3'-10' Chimney Rule
At the very least, inspect the chimney connector and
chimney at least once every two months during the heating
season to determine if a buildup of creosote or soot has
occurred. If a significant layer of creosote has accumulated
(1/8" (3 mm) or more], or if soot has accumulated, either
should be removed to reduce the risk of a chimney fire.
Failure to keep the chimney and connector system clean
can result in a serious chimney fire.
The conditions for a chimney fire develop as follows: When
wood is burned slowly, it produces tar and other organic
vapors which combine with expelled moisture to form
creosote. The creosote vapors condense in the relatively
f i r e - p a r t s . c o m