Combustion Air Supply; Draft Requirements; Chimney Installation - SCAN DSA 4 Instructions For Installation And Use Manual

Surround Panel Installation
Use the S-clips and provided with the Surround Panels. Both types of fasteners engage the surround to
corresponding slots and holes in the fireplace cabinet.
4.8

Combustion Air Supply:

Provide for an adequate supply of air for combustion. Proper ventilation is essential when using a
solid fuel-burning appliance. The combustion process uses oxygen from inside the dwelling. If there is
inadequate make-up air, (such as in newer homes which are well-insulated and weather tight), it may
be difficult to obtain an adequate draft in your chimney. To correct this, it may be necessary to crack a
window on the windward side of the dwelling, or provide combustion air to a nearby floor/wall vent
(fresh air duct).
4.9

Draft Requirements:

The SCAN DSA fireplace is only one component of the total system. The venting system is equally
important for achieving the required flow of combustion air to the fire chamber and for safely
exhausting unburned combustion by-products. If the venting system's design does not promote these
ends, the system may not function properly. Poorly-functioning vent systems may create performance
problems as well as be a safety hazard (i.e. an oversized chimney may result in less than optimum
performance. Installations into a large, masonry chimney may require a liner to improve
performance). A draft test should read greater than .04" W.C. (Inches Water Column) and less than .08"
W.C Minimum chimney height is 15 feet. The table below presents specifications to meet draft
requirements for the SCAN DSA fireplace under normal operation conditions.
Fireplace
SCAN DSA 4
The chimney draft will vary depending upon weather conditions. If the chimney draft is over-strong,
reduce the combustion air supply as appropriate.
4.10

Chimney Installation:

There are two types of chimneys suitable for the SCAN DSA 4.
1. A code- approved masonry chimney with a flue liner.
2. A prefabricated chimney complying with the requirements
for Type HT (2100°F) chimneys per UL 103 or ULC S629.
The chimney size should not be less than the cross-sectional area
of the flue collar, and not more than three times greater than the
With Closed Doors
Douglas Fir Lumber 18% Moisture Content
Flue Collar
Ø mm/inch
150 mm / 6 inch 18 Pa. / 0.06 W.C.
Chimney draft Efficiency
Pa/W.C.
BTU
in %
63% 10,500 – 27,900
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