Slant/Fin Sentry Series User Manual
Automatic vent damper, Warning, For galaxy, sentinel and sentry series boilers

For Galaxy, Sentinel
and Sentry Series Boilers
The installation must conform to the requirements of
the authority having jurisdiction or, in the absence of
such requirements, to the National Fuel Gas Code,
ANSI Z223.1-latest edition.
In addition, where required by the authority having
jurisdiction, the installation must conform to American
Society of Mechanical Engineers Safety Code for
Controls and Safety Devices for Automatically Fired
Boilers, No. CSD-1.
THIS MANUAL MUST BE LEFT WITH OWNER AND
SHOULD BE HUNG ON OR ADJACENT TO THE
BOILER FOR REFERENCE.
The vent damper shipped with your boiler may be a different model than illustrated above.
WARNING
By failing to follow the WARNING instructions listed below, a hazardous condition
such as explosion, carbon monoxide poisoning, fire or all of these could result.
• This device is design certified by C.S.A. for use only on
specific Slant/Fin Corporation gas boiler models. These
boilers must also be equipped with a plate or rating plate
which states that the boiler must* (may*) be used with a
Slant/Fin Corp. automatic vent damper device and indicates
the proper vent damper model or part number (See Table 1).
*
Boilers under 300,000 Btu/hr. input
MUST use a vent damper.
Note: GG-75 HES (Constant circulation),
MAY use a vent
damper.
Boilers with 300,000 Btu/hr. input or greater equipped with IID
(intermittent pilot ignition)
MAY use a vent damper.
Boilers with 300,000 Btu/hr. input equipped with continuous
pilot and VR8300A gas valve MAY use a vent damper.
•
This device must be installed and inspected annually by a quali-
fied installer in accordance with the Slant/Fin vent damper
installation instructions, Slant/Fin boiler installation instructions
and the vent damper manufacturer's installation instructions
included with this damper. If improperly installed, a hazardous
condition such as explosion or carbon monoxide poisoning could
result. If installed improperly, all vent damper and boiler war-
ranties shall be voided.
•
Use of this device on boilers other than those indicated above is
not permitted.
•
CAUTION: When servicing controls all wires must be labeled
prior to disconnection. Wiring errors can cause improper and
dangerous operation.
•
This device must be installed on the outlet end of the draft hood
of the boiler as close to the draft hood as practicable, and with-
out modification of the draft hood (see figures 3 through 7).
•
The inlet size of the vent damper must be the same nominal
trade size as the outlet of the draft hood. See Table 1 for the
boiler models and their corresponding vent damper models.
•
The device must be located in a venting system or section of a
venting system so that it serves only the single appliance for
which it is installed.
•
Clearances of not less than 6 inches (152 mm) must be main-
tained from combustible materials, with provisions for access.
•
If the boiler will not fire, DO NOT jump any of the safety controls
(the vent damper circuit is part of the safety control circuit).
Check page 12 of this manual for troubleshooting guide.
Part No. 41-1676. Printed in U.S.A. 112
Publication No. VD-40, Rev. V
INSTALLATION INSTRUCTIONS AND TROUBLESHOOTING GUIDE
AUTOMATIC VENT DAMPER
READ AND SAVE THESE INSTRUCTIONS
FOR REFERENCE.