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Install sealed throat connector or flashing to prevent leakage of
room air up through chimney.
DV Only: Before installing vent liners, mark each liner on both
ends to designate which is the intake and the exhaust.
Measure the height of the chimney beforehand and purchase the
appropriate kit. Never attempt to over-stretch a flexible liner to
accommodate the height of the chimney.
The flue damper can be fully blocked open or removed for
installation of the Sonnet; the smoke shelves, shields and baffles
may be removed if attached by mechanical fasteners.
The chimney must be clean, in good working order and
constructed of non-combustible materials.
Make sure that all chimney cleanouts are tight fitting and will not
permit air to leak into the chimney.
DV Only: The air intake can be increased to a standard 3” size
using Adaptor (50-1499 - 2” to 3” Air Intake) included with this unit.
Refractory, glass doors, screen rails, screen mesh and log grates
can be removed from the fireplace before installing the Sonnet.
Initial Installation
QUALIFIED INSTALLERS ONLY
Figure 40: Installation of Sonnet DV and BV.
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Table 5: Vent termination clearances
Minimum Clearance Description
3 ft (0.9 m)
Clearance above the highest point where it passes through a roof surface,
refer to Figure 39.
24 in (0.6 m)
Clearance above a roof ridge, any other portion of a building, or any other
obstruction within a horizontal distance of 10 feet (3 m), refer to Figure 39.
5 ft (1.5 m)
Clearance for a vent or chimney above either the highest connected appli-
ance drafthood outlet, or ue collar.
6 ft (1.83 m) Clearance to mechanical air supply inlet.
3ft (0.9m)
Clearance to each side of center line extended above meter/regulator as-
sembly.
6 ft (1.83 m) Radial clearance around service regulator vent outlet.
12 in (30 cm) Clearance above grade, verandah, porch, deck, or balcony.
3 ft (0.9 m)
Clearance to a building opening or combustion air inlet of another appli-
ance, except with the approval of the authority having jurisdiction for the
following reduced clearances.
9 in (0.23 m) Exception for inputs up to and including 50,000 Btu/h (15kW)
12 in (0.3 m)
Exception for inputs exceeding 50,000 Btu/h (15kW) but not exceeding
100,000 Btu/h (30kW)