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7. Any_mproper operation of the common ventingsystem
shouldbecorrected sotheinstallation c onforms w iththe
National Fuel G as Code, ANSI Z 2231-latest revision When
resizing anyportion of the common venting system, t he
common venting system shouldbe resized to approach
the minimum sizeas determined usingthe appropriate
tablesin Part11 in the National FuelGasCode,ANSI
Z223.1-latest revision.
For boilers for connection
to gas vents or chimneys,
vent installations
shall be in accordance with Part 7,
Venting of Equipment,
of the National Fuel Gas Code,
ANSI Z223.1-1atest
revision and applicable provisions
of the local building codes.
Vent connectors
serving appliances
vented by natural
draft
shall
not be connected
into
any portion
of
mechanical
draft
systems
operating
under
positive
pressure,
ROOF
RIDGE
3/4 HT MAXIMUM
HT
MUSTSLOPEUP
AT
LEAST
1/41NCH
PER
FOOT
OF
HORIZONTAL
RUN
HORIZONTAL INSTALLATION
TO FURNACE
VENT
TO CHIMNEY
OR BOILER
DAMPER
INSTALL VENT DAMPER WITH
ACTUATOR TO SIDES OF
VENT ONLY.
DO NOT MOUNT
ABOVE OR BELOW VENT.
VERTICAL INSTALLATION
TO CHIMNEY
'6 ©
FLOW
VENT
DAMPER
ACTUATOR
MAY BE
TO FURNACE
N
INSTALLED
IN ANY POSITION
OR BOILER
U
CAUTION: DO NOT INSTALL
THE VENT DAMPER
WmHIN 6 in. (152 ram) OF
COMBUSTIBLE MATERIAL
3HIMNEY
BOILER
WATER
HEATER
TYPICAL
INSTALLATION
FOR VENT DAMPER
NOTE CAUTION
AND Foo'rNOTES
1. Install the vent damper to ser,Ace only the single appliance for
which it is intended, if improperly installed, a hazardous condition,
such as an explosion or carbon monoxide poisoning,could result.
2. Do not install _e vent damper on vent pipe curve.
3, Do not run wires near high temperature surfaces. Use stand-off
brackets if necessary
7o0o_
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