Specifications

Masport In-built Fireplaces 9
3) Full Flue Liner
(No Cleanout
Required)
1) Positive Flue
Connection
with Cleanout
2) Direct Flue
Connection
with Cleanout
INSTALLATION
B) Into a Factory Built Fireplace
1) When installed in a factory built fireplace, a full
stainless steel rigid or flexible flue liner is mandatory,
for both safety and performance purposes. When
a flue or liner is in use, the in-built fireplace is able
to breathe better by allowing a greater draft to be
created. The greater draft can decrease problems
such as, difficult start-ups, smoking out the door,
and dirty glass.
2) In order to position the flue liner, the existing rain
cap must be removed from your chimney system. In
most cases the flue damper should also be removed
to allow passage of the liner.
3) In most cases opening the existing spark screens
fully should give enough room for the in-built fireplace
installation. If it does not, remove and store.
4) If the floor of your fireplace is below the level of the
fireplace opening, adjust the in-built fireplace's
levelling bolts to accommodate the difference. When
additional shimming is required, use non-
combustible masonry or steel shims.
5) Measure approximately the alignment of the flue
liner with the position of the smoke outlet hole on the
in-built fireplace to check for possible offset. If an
offset is required, use a proper stainless steel unit
available with the chimney liner.
6) Once the above items have been checked, slide
your in-built fireplace into position after first
positioning the flue liner and offset if required. (Re-
install raincap at completion of installation).
A) Into a Masonry Fireplace
The in-built fireplace must be installed as per the
requirements of your local inspection authority. Three
methods of flue connection are acceptable in most
areas, these include:
1) Positive flue connection, where a large blocking
plate and a short connector pipe is used.
2) Direct flue connection, where a smaller blocking
plate and a connector pipe to the first flue liner tile
is used.
3) Full flue liner, where a stainless steel rigid or flexible
liner pipe is routed from the in-built fireplace outlet
collar to the top of the chimney.
Masport highly recommends the use of a full liner as the
safest installation and provides the most optimum
performance. Your retailer should be able to help you
decide which system would be the best for your
application.
Note: A clean-out door is sometimes required, by
your inspector, to be installed when either
the Positive flue connection or Direct flue
connection method is used.
The use of one of the connection methods listed on this
page not only increases the safety of your in-built
fireplace by directing the hot gases up the flue, but will
also help increase the unit's efficiency and decrease
creosote deposits in the chimney.
When a connected flue or liner is in use, the in-built
fireplace is able to “breathe” better by allowing a greater
draft to be created. The greater draft can decrease
problems such as, difficult start-ups, smoking out the
door, and dirty glass.