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The minimum clearance to combustibles is 6” (150 mm) when using single wall venting and 1” (25 mm) when
using “B-vent” venting.
We strongly recommend installing an approved chimney liner in an existing brick chimney. This will maximize
the potential draft of the chimney and lessen the effects of slow chimney start-up.
VENTING OF A FIREPLACE FITTED WITH THE DRAFTHOOD ADAPTOR:
Note: Please refer to the chimney manufacturer’s installation instructions prior to commencing the installation.
This unit may be vented to an existing masonry chimney, or where no masonry chimney is available, an
Figure 44: Unit top venting styles
4" (10cm)
vent
6" (15cm)
optional
decorative
cover
Check vent draft
at the top row of
opening.
Figure 45:
Unit rear
venting style.
approved “B-vent” chimney, or any other approved constructed
chimney/vent system (see Figure 44 & Figure 45).
In either case, the fireplace may be connected to the chimney/vent
using a 4” (10 cm) single wall vent connector.
When an existing masonry chimney is utilized for the venting, we
recommend the vent connector be connected to an approved 4” (10
cm) diameter flue liner running the full height of the chimney. In many
jurisdictions this flue liner may be mandatory.
If 4” (10 cm) single wall vent is used, a minimum of 6” (15 cm) must be
maintained between the vent connector and any combustibles.
If 4” (10 cm) “B-vent” is used a minimum of 1” (25 mm) must be
maintained between the vent connector and any combustibles.
CAUTION:
A minimum vent height of 12’ (3.6 m) from the floor is
required to effectively vent this fireplace.
1. Close all windows and doors in the room.
2. Start all exhaust fans in the house and the
furnace blower.
3. Light the fireplace and set to maximum flame
adjustment.
4. After a minimum of 10 minutes operation, test
the chimney draft with a smoke match at the
top row of the pattern to confirm that there is
adequate draft or ‘pull’ at the openings around
the body of the Drafthood Adaptor, as shown in
Figure 46.
Initial Installation
QUALIFIED INSTALLERS ONLY
Figure 46: Draft test place.
SPILLAGE TEST:
A spillage test must be performed prior to leaving the installed fireplace
with the customer. Perform this test in the following manner:
