Harman Stove Company II - Manual (Page 8)

6
or the elbow should be installed inside
the flue connector on the stove. It
should be held in place by drilling three
holes through the pipe. The holes
should be of suitable diameter for the
sheet metal screws or pop rivets used
for fastening.
A straight section of pipe or an
elbow must now be installed.
A barometric damper may be
installed on this vertical section of the
pipe. Use a listed barometric damper.
I M P O RTANT! A L L H O R I Z O N TA L
RUNS SHOULD HAVE A 1/4" RISE TO
THE FOOT SO THAT ANY LIQUID
T H AT M AY D E V E L O P W I L L R U N
BACK INTO THE STOVE.
Connector thru Walls and Chimney
NFPA 211 does not permit a chim-
ney connector to pass through any floor
or ceiling or through any fire wall or fire
partition. However, where necessary, a
connector may pass through a partition
other than a fire partition under any of
the following conditions:
A. Where a ventilated type metal thim-
ble, (see figure 4) is used. Such a thim-
ble must be at least 12 inches larger in
diameter than the chimney connector.
B. Where a metal or burned fire-clay
thimble is used and the thimble is sur-
rounded on all sides by not less than 8
inches of brickwork or equivalent fire-
proofing material.
Figure 5: Connecting smokepipe
(Connector) to Chimney Through Wall.
Two methods of connecting a
chimney connector to a chimney
flue where the connector must
pass through a combustible parti -
tion wall. Instead of the asbestos
board shown, sheet metal may be
used, or a metal lath and plaster
finish may be applied at that area.
Use 24 gauge or heavier metal.
Clearance needed is three times
the diameter of stovepipe.
C. Where all combustible material is
cut out of the partition wall for a suffi-
cient distance to provide not less than
18 inches clearance on all sides of the
connector. Any material used to close
this opening must be noncombustible
insulating material.
D. Where the section of connector
pipe passing through the wall is
replaced by a properly installed section
of factory-built chimney, the chimney
section must be listed for solid fuel use
and be insulted.
Where an existing chimney is used,
it must be large enough to provide a
draft adequate for exhausting the
gaseous products of combustion. The
cross-sectional area of the chimney
flue should be at least 25 percent
greater than that of the chimney con-
nector (stovepipe). For example, the
common 8 inch by 8 inch chimney flue
liner has an actual interior cross-sec-
tional area of only 49 square inches (7"
x 7") and, thus, can only accommodate
a 7" stove connector.
7. Preventive
Maintenance
Instructions
7.1 Periodic and Normal
Everyday Maintenance
Blower Motor - Oil twice yearly.
Grates - Keep ash drawer emptied.
Failure to do this may cause grates to
warp.
Figure 4. Thimble for Passing Smokepipe (Connector) Thru Walls