Loading ...
Loading ...
Loading ...
I For boilers for connection to gas vents or chimneys, vent installations shall be I
In accordance with Part 7, VenUng of Equipment, of the National Fuel Gas Code,
IANSI Z223.1-1atest revision and applicable provisions of the local building codes.
CHECK YOUR CHIMNEY
This is a very important part of your heating system. It must
be clean, the right size, properly constructed and in GOOD
CONDITION. No boiler can function properly with a bad chim-
ney Inspect the chimney and verify that the construction and
size of the chimney meets all applicable provisions of the
National Fuel Gas Code and local building codes. Fig. 8
gives you an idea how a boiler might be vented to a chimney.
Note that the height (HT) is measured from the vent pipe
to the top.
CHIMNEY SIZING
Chimney sizing and all other aspects of the vent installation
must be in accordance with Part 7 of the National Fuel Gas
Code, ANSI Z223.1-latest revision, and applicable provisions
of the local building codes.
CONNECTING THE VENT DAMPER
AND VENT CONNECTOR
Refer to Fig. 1 flue diagram for the size and location of the
vent (flue opening). Use a 28 gauge (minimum) galvanized
pipe to connect to the chimney
IMPORTANT - The damper blade on the furnished vent
damper has a 1/2square inch hole (approximately 3A,diame-
ter). On boilers equipped with standing pilot, the hole must
be left open. On boilers equipped with intermittent ignition,
the hole should be plugged by using the plug supplied with
the vent damper.
1. Position furnished vent damper on top offlue outlet collar,
Fasten damper securely to flue outlet collar with sheet
metal screws. Make sure damper blade has clearance
to operate inside of diverter.
As An Option
The damper may be installed in any horizontal or vertical
position, closer to the flue outlet collar preferred. Follow
the diagrams - Figures 9, 10 and 11.
2. Install the vent damper to service only the single boiler
for which it is intended. The damper position indicator
shall be in a visible location following installation. Locate
the damper so that it is accessible for servicing.
3. The damper must be in the open position when appliance
main burners are operating.
4. The boiler is equipped with a factory wired harness that
plugs into the vent damper. The thermostat must be
connected to the black wires marked 24 volt thermostat
on the boiler.
5. Vent pipe must be same size as the flue outlet collar.
6. Slope pipe up from boiler to chimney not less than V4'
per foot.
7. Run pipe as directly as possible with as few elbows as
possible.
8. Do not connect to fireplace flue.
9. End of vent pipe must be flush with inside face of chimney
flue. Use a sealed-in thimble for the chimney connection.
10. Horizontal run should not be longer than 3Athe chimney
height (HT) (Fig. 8).
The sections of vent pipe should be fastened with sheet metal
screws to make the piping rigid. Horizontal portions of the
vent system must be supported to prevent sagging. Use
stovepipe wires every 5' to support the pipe from above.
If the vent pipe must go through a crawl space, double wall
vent pipe should be used. Where vent pipe passes through
a combustible wall or partition, use a ventilated metal thimble,
The thimble should be 4 inches larger in diameter than the
vent pipe.
MINIMUM VENT PIPE CLEARANCE
Wood and other combustible materials must not be closer
than 6' from any surface of single wall metal vent pipe. Listed
Type B vent pipe or other listed venting systems shall be
installed in accordance with their listing.
REMOVING EXISTING BOILER FROM
COMMON VENTING SYSTEM
When an existing boiler is removed from a common venting
system, the common venting system is likely to be too large
for proper venting of the appliances remaining connected
to it.
At the time of removal of an existing boiler, the following
steps shall be followed with each appliance remaining
connected tothe common venting system placed in operation,
while the other appliances remaining connected to the
common venting system are not in operation.
1,
2.
Seal any unused openings in the common venting system.
Visually inspect the venting system for proper size and
horizontal pitch and determine there is no blockage or
restriction, leakage, corrosion and other deficiencies which
could cause an unsafe condition.
,
Insofar as ispractical, close all building doors and windows
and all doors between the space in which the appliances
remaining connected to the common venting system are
located and other spaces of the building. Turn on clothes
dryers and any appliance not connected to the common
venting system. Turn on any exhaust fans, such as range
hoods and bathroom exhausts, so they will operate at
maximum speed. Do not operate a summer exhaust fan.
Close fireplace dampers.
,,_ 10
Loading ...
Loading ...
Loading ...