Hotblast 1357M, Руководство пользователя

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12
SHEET STEEL SUPPORTS
CHIMNEY SECTION
CHIMNEY
CONNECTOR
AIR SPACE
2 IN.
FIGURE 12, PART D
MINIMUM CLEARANCE
2 IN. ALL AROUND
CHIMNEY THIMBLE
1 IN. AIR SPACE TO
CHIMNEY LENGTH
MASONRY CHIMNEY CONSTRUCTED
TO NFPA 211
SHEET STEEL SUPPORTS
(24 GAUGE MIN. THICKNESS)
CHIMNEY
FLUE
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.
CHIMNEY CONNECTOR
TO HEATER
SOLID INSULATED, LISTED
FACTORY-BUILT CHIMNEY
LENGTH (12 IN. LONG MIN.)
in the combustible wall shall be covered and the thimble sup -
ported with sheet steel supports which are at least 24 gauge
(0.024") in thickness. The sheet steel supports shall be
securely fastened to wall surfaces on all sides and shall be
sized to fit and hold the chimney section. Fasteners used
to secure chimney sections shall not penetrate chimney
flue liner. See Part C.
4. Use an 8" inside diameter solid insulated listed factory-built
chimney length which has 1" or more of solid insulation. The
minimum length of this chimney section shall be 12" and
will serve as a pass-through for the 6" diameter chimney
connector. There must be at least a 12" air space between
the outer wall of the chimney section and any combustible
materials. The chimney section shall be concentric with
and spaced 1" away from the chimney connector by means
of sheet steel support plates on both ends of the chimney
section. The opening in the combustible wall shall be cov -
ered and the chimney section supported on both sides with
sheet steel supports which are at least 24 gauge (0.024")
in thickness. The sheet steel supports shall be securely
fastened to wall surfaces on all sides and shall be sized to
fit and hold the chimney section. Fasteners used to secure
chimney sections shall not penetrate chimney flue liner. See
Part D.
5. A listed factory-built wall pass-through system may be pur -
chased and installed according to the instructions packaged
with it to provide a safe method of passing the chimney
connector through a combustible wall for connection to a
masonry chimney.
Additional requirements pertaining to Figure 8 and
the above wall pass-through systems:
1. Insulation material used as part of wall pass-through sys -
tem shall be of noncombustible material and shall have a
thermal conductivity of 1.0 Btu • in./ft.² • °F (4.88 kg • cal/
hr • m² • °C) or less.
2. All clearances and thicknesses are minimums: larger clear -
ances and thickness are acceptable.
3. A chimney thimble, as shown for 3" and 4" above (Parts C
and D) shall be for types "3" and 4" connections to facili -
tate removal of the chimney connector for cleaning. The
chimney thimble shall be of ASTM C315 fireclay with 5/8"
minimum wall thickness, or material or equivalent durabil -
ity. The inside diameter of the thimble shall be sized for
the proper snug fit of a 6" diameter chimney connector
pipe. The thimble shall be installed without damage to the
chimney flue. The thimble shall extend through the chimney
wall to, but not beyond, the inner surface of the chimney
flue and shall be permanently cemented in place with high
temperature cement.
4. A chimney connector to a masonry chimney, except for 2"
above (Part B), shall extend through the wall pass-through
system to the inner face of the chimney flue, but not beyond.
It does not have to be fastened in place so long as it cannot
accidently be pulled out of the chimney or shoved into the
chimney flue. If fasteners are used to secure the chimney
connector to a masonry chimney, the fasteners shall not
penetrate the chimney flue liner.
5. Any material used to close up any opening for the connector
shall be noncombustible.
PART E - (Figure 12)
In addition to the methods shown by A, B, C, and D of
Figure 12, a listed factory-built wall pass-through system
may be purchased and installed according to the instruc-
tions packaged with it to provide a safe method of pass-
ing chimney connector through a combustible wall for a
connection to a masonry chimney.
If the chimney connector does not have to pass through a
combustible wall to get to a masonry chimney, simply con -
nect the chimney connector directly to the masonry chimney's
chimney thimble as described and shown by parts C and D of
Figure 12. Remember, the chimney connector should extend
into the chimney thimble to the inner face of the chimney flue
but not beyond; if the chimney connector is extended through
the chimney thimble into the chimney flue, resistance to the
flow of smoke and gases up the chimney will occur; that flow
resistance will have an adverse affect on the operation and
performance of the heater and venting system.
CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY WHEN CHIMNEY CONNECTOR
DOES NOT PASS THROUGH A COMBUSTIBLE WALL