Waterford Trinity Mk II Installation & Operating Instructions Manual - page 9
8
The connector may pass through walls or partitions
constructed o combustible material to a masonry
chimney provided the connector system selected is
installed in accordance with the proper clearances
and conditions.
THIMBLES
Thimbles for chimney or vent connector should be
fire clay (ASTM C 315, specification for Clay Flue
Linings), galvanised steel of minimum thickness of
24 gauge, or material equivalent durability.
Thimbles should be installed without damage to the
liner. The thimble should extend through the wall to,
but not beyond, the inner face of the liner and
should be firmly cemented to masonry.
Thimbles should be located to provide adequate
pitch or rise of chimney or vent connectors and,
where the ceiling above the appliance is
constructed of combustible material, the location of
the thimble should provide minimum clearance
required for the connector as specified in section
under “Minimum Clearances to Combustibles”.
Insulation material used as part of wall pass-
through system should be of non-combustible
material and should have a thermal conductivity of
1.0 Btu.in./ft.F (4.88kg.cal/hr.m.C) or less. All
clearances and thicknesses are minimums; larger
clearances and thicknesses are acceptable. Any
material used to close up an opening for the
connector should be masonry chimney, except for
system 2 (under heading “Chimney Connector
Systems, Thimbles and Clearances”), shall extend
to piece through the wall pass-through system and
the chimney wall to the inner face of the flue liner,
but not beyond.
CHIMNEY CONNECTOR SYSTEMS,
THIMBLES, AND CLEARANCES FROM
COMBUSTIBLE WALLS
1. Minimum 3
1
/
2
” (90mm) thick brick masonry wall
framed into combustible wall with a min. of 12”
(305mm) brick separation from clay liner to
combustibles, Fire Clay Liner (ASTM C315 or
equivalent) min.
5
/
8
” (16mm) wall thickness,
should run from outer surface of chimney flue
liner and should be firmly cemented in place.
2. Solid insulated listed factory-built chimney
length of the same inside diameter as the
chimney connector and having 1” (25mm) or
more of insulation with a min. 9” (229mm) air
space between the outer wall of the chimney
length and combustibles. The inner end of the
chimney length shall be flush with the inside of
the masonry chimney flue and shall be sealed to
the flue and to the brick masonry penetration
with non-water-soluble refractory cement.
Supports should be securely fastened to wall
surfaces on all sides. Fasteners between
supports and the chimney length shall not
penetrate the chimney liner.
(305mm) to
(305mm) of brick
(50mm)
(230mm)
(50mm)
(230mm) min.
Fig.30
3. Sheet steel chimney connector, min. 24 gauge in
thickness, with a ventilated thimble, having two
1” (25mm) air channels, separated from
combustibles by a min. of 6” (150mm) of glass
fibre insulation. Opening should be covered and
thimble supported with a sheet steel support,
min. 24 gauge in thickness. Supports should be
securely fastened to wall surfaces on all sides
and should be sized to fit and hold chimney
section. Fasteners used to secure chimney
sections should not penetrate chimney flue liner.
Fig.31
Minimum 6” (150mm)
fibre Insulation
(25mm)
(50mm)
(25mm) constructed of sheet steel