Initial installation – Enviro Ascot User Manual

Page 26

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.

Figure 40: Unit top venting styles.

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Figure 42: Draft test place.

Figure 41: Unit rear venting

style.

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.

This unit may be vented to an existing masonry

chimney, or where no masonry chimney is available,

an approved “B-vent” chimney, or any other approved

constructed chimney/vent system (see Figure 40 &

41).
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

Initial Installation

SPILLAGE TEST:
A spillage test must be performed prior

to leaving the installed fireplace with the

customer. Perform this test in the following

manner:
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 43.