United States Stove Company 22AF - Manual (Page 12)

12 •DRAWINGS FOR ILLUSTRATION PURPOSES ONLY•
PART B
FIGURE 8 -
(FIGURE 8 CONTIN-
UED)
AIR SPACE
9 IN. MINIMUM
FACTORY-BUILT
CHIMNEY LENGTH
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.
CHIMNEY LENGTH
FLUSH WITH INSIDE
OF FLUE
NONSOLUBLE
REFACTORY
CEMENT
MASONRY CHIMNEY CONSTRUCTED
TO NFPA 211
CHIMNEY CONNECTOR
TO HEATER
MINIMUM CLEARANCE
9 IN. ALL AROUND
SHEET STEEL SUPPORTS
(24 GAUGE MIN. THICKNESS)
CHIMNEY FLUE
SOLID INSULATED, LISTED
FACTORY-BUILT CHIMNEY LENGTH
USE CHIMNEY MFRS. PARTS TO
ATTACH CONNECTOR SECURELY
AIR SPACE
TWO VENTILATED AIR
CHANNELS EACH 1 INCH.
CONSTRUCTED OF
SHEET STEEL.
PART C
FIGURE 8
MASONRY CHIMNEY CONSTRUCTED
TO NFPA 211
SHEET STEEL SUPPORTS
(24 GAUGE MIN. THICKNESS)
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.
MINIMUM 6 IN. GLASS
FIBER INSULATION ALL AROUND
24 GAUGE
VENTILATED THIMBLE WITH
TWO 1 INCH AIR CHANNELS
CHIMNEY THIMBLE
CHIMNEY FLUE
SHEET STEEL SUPPORTS
CHIMNEY SECTION
CHIMNEY
CONNECTOR
AIR SPACE
2 IN.
PART D
FIGURE 8
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.
CONNECTION OF CHIMNEY CONNECTOR TO A MASONRY CHIMNEY WHEN CHIMNEY CONNECTOR
DOES NOT PASS THROUGH A COMBUSTIBLE WALL
PART E - (Figure 8)
In addition to the methods shown by A, B, C, and D of Figure 8, a listed factory-built wall pass-through system
may be purchased and installed according to the instructions packaged with it to provide a safe method of
passing 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
connect the chimney connector directly to the masonry chimney's chimney thimble as described and shown by parts
C and D of Figure 8. Remember, the chimney connector should extend into the chimney thimble to the innerface 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.
CHIMNEY CONNECTOR
TO HEATER
SOLID INSULATED, LISTED
FACTORY-BUILT CHIMNEY
LENGTH (12 IN. LONG MIN.)
CHIMNEY CONNECTOR
TO HEATER