18
IM-BW4-5-02
[240013014 Rev. B [12/15/2020]
Chimney Connector And Draft Regulator
•
Venting the boiler requires 6” diameter chimney
connector pipe and use of manufacturer provided draft
regulator.
•
Regulator, when properly installed, automatically
controls the draft.
• Install in horizontal section of pipe, may also be
installed in angled or vertical section of pipe.
•
Verify “top” of regulator is at the top and short pipe
section which holds the vane is horizontal.
• Even though locating draft regulator close to chimney
reduces noise,
install draft regulator as close as
practicable to the boiler.
•
Install chimney connector, start at boiler with vertical
pipe, elbow, then install draft regulator horizontally.
•
When regulator is in place, start at chimney and work
back to the regulator.
•
Join the two sections with draw-band.
•
Horizontal pipe must slope up toward the chimney at
least 1/4 inch per linear foot of venting.
•
Chimney connector must not leak and must be firmly
supported.
•
Join each section with at least two sheet metal screws.
Support every second section with a stovepipe wire.
NFPA RECOMMENDED MINIMUM CHIMNEY SIZES
FIRING RATE
(gph)
CHIMNEY
HEIGHT
(ft)
NOMINAL
CHIMNEY
ROUND
LINER INSIDE
SQUARE
LINER INSIDE
0.60 - 1.30
15
8” x 8”
6”
6 ¾” x 6 ¾”
1.31 - 1.80
15
8” x 8”
7”
6 ¾” x 6 ¾”
For elevations above 2,000 feet above sea level, add 3 feet to the chimney heights.
For oil fired boilers for connections to vents or chimneys,
vent installations shall be in accordance with applicable
provisions of
NFPA-31 Standard for the Installation of
Oil-Burning Equipment
(latest edition), and applicable
provisions of local building codes.
NOTICE
Fresh air (ventilation) is important to proper
venting. Ventilation and venting are two parts of the
same system. Inadequate ventilation will result in
inadequate venting. Always be sure to have enough
ventilation to support proper venting.
Check your chimney to make certain that it is right size,
properly constructed and in good condition.
See Table “Recommended Minimum Chimney Sizes”.
For additional chimney design and sizing information,
consult the National Standard for Chimneys, Fireplaces,
Vents and Solid Fuel Burning Appliances, ANSI/NFPA 211.
WARNING
Fire Hazard. Maintain minimum vent pipe clearance
of 9” from surface of vent to wood and other
combustible materials. Failure to comply may result
in death or serious injury.
!
Sidewall Venting With Listed Power Venter
—
This boiler is not approved for direct sidewall horizontal venting.
— In the U.S. :
Per section E.11 of NFPA 31-2020
Standard for the Installation of Oil Burning Equipment,
a listed
power venter providing mechanical draft may be used when approved by the Authority having jurisdiction. Select
the listed power venter to match the BTU per hour input of the boiler being vented. Follow all manufacturer’s
installation and operating instructions for venting and termination included with the power venter.
CHIMNEY AND CHIMNEY CONNECTIONS
