Measure Old Fireplace - Bellfires BSV 19 Installation Manual

Bellfires® BSV

(1) Measure Old Fireplace

There are 6 Steps to a SuperVent
installation.
1. Measure old fireplace to determine what
size BSV unit to use, and the appropriate
liner size.
2. Demolition of firebox and smoke chamber
and preparation for the new BSV.
3. Layout for the new BSV.
4. Installation of the Super Flex® , (or Super
Rigid) liner system.
5. Installation of the BSV.
6. Finish and trim facade.
There are as many different size and
shape fireplaces as there are masons who build
them. Some are large and cavernous and some
are small and tight. It is much easier to install the
Super Vent® in a fireplace with a deep firebox
and tall, wide smoke chamber, and large flue
diameter, than an installation with a shallow fire-
box, short, tight chamber, and an undersized or
offset flue. Careful measurements should be
taken when inspecting and estimating the job.
Measurements to take during inspection/esti-
mate:
A. Width of opening
B. Height of opening
C. Thickness of opening (lintel size or
arch thickness)
D. Depth of firebox behind face
E. Width of firebox rear
F. Depth of smoke shelf to rear smoke
chamber wall
G. Distance from firebox floor to base of
flue
H. Flue size
I. Total Height
Measuring fireplace (depth
of fireplace cavity)
Plumb down to floor from front edge of smoke
shelf or damper frame with level or plumb bob
and string. Measure from this point on floor to
rear of firebox. Subtract this measurement from
the depth of smoke shelf measurement. This
amount less the thickness of the firebox brick will
represent the total depth available with rear fire-
box removed.
Measure from firebox floor to base of flue tile. If
measurement from floor to flue is greater than
height of Bellfires firebox and smoke chamber,
and flue size is greater than liner size, installa-
tion will be simple and little smoke chamber
demolition will be necessary. If measurement
from floor to flue is less than height of Bellfires
firebox and smoke chamber, and/or flue size is
smaller than liner size, demolition of smoke
chamber and base of flue will be necessary.
14
B
A