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should be corrected so the installation conforms with
the latest revision of the National Fuel Gas Code, ANSI
Z223.1. When resizing any portion of the common venting
system, the common venting system should be resized to
approach the minimum size as determined using the ap-
propriate tables in the latest revision of the National Fuel
Gas Code, ANSI Z223.
DAMPER INSTALLATION
NOTE: Refer to Figure #11 for steps 1-6.
LOCKNUT
HARNESS
CONN.
DAMPER
CONN.
VENT
DAMPER
VENT OUTLET
1.
Place Vent Damper on or as close to vent outlet of boiler
as possible. (Figure #12)
2.
Remove Vent Damper Motor cover.
3.
Feed damper wire harness connector through bracket
hole on Damper Motor frame.
4.
Tighten locknut onto Damper wire harness connector.
5.
Plug Damper connector into socket on Damper Motor
frame.
6.
Replace Damper Motor cover and wire Damper in accor-
dance with Figure #11.
VENT SYSTEM MODIFICATION
VENT DAMPER INSTALLATION & INSTRUCTIONS
Figure #11
INSTALLER
HOOK-UP
DAMPER
MOTOR
INSTALLER
HOOK-UP
AQUASTAT
DAMPER
WIRE
HARNESS
1.
Ensure that only the boiler is serviced by the Vent Damp-
er. (Figure #12)
REFER TO DAMPER
MANUFACTURER'S
INSTALLATION
INSTRUCTIONS FOR
POSITION OF DAMPER
CONTROL BOX
ACCEPTABLE VENT
DAMPER LOCATIONS
FACTORY
WIRED
2.
Clearance of not less than 6 inches between Vent
Damper and combustible material must be maintained.
Additional clearance should be allowed for service of Vent
Damper.
3.
Vent Damper must be in the open position when appli-
ance main burners are operating.
4.
The Vent Damper position indicator must be in a visible
location following installation.
5.
The thermostat's heat anticipator must be adjusted to
match the total current draw of all controls associated with
the boiler during a heating cycle.
12
DAMPER INSTRUCTIONS
Figure #12
UN-ACCEPTABLE
DAMPER LOCATIONS
BOILER
CHIMNEY
X
HOT WATER HEATER
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