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must be supported to prevent sagging by securing each joint
with metal screws and by providing hanger spaced no
greater than 5 feet apart.
D. Vent or breeching into chimney should not be inserted past
the inside wall of the chimney liner.
E. All venting means should be inspected frequently. See Care
and Maintenance and separate User's Information Manual.
V
ENT DAMPER INSTALLATION
The vent damper referred to in the following instructions is
the Slant/Fin Corporation vent damper.
This device is design certified by A.G.A. for use ONLY on spe-
cific Slant/Fin Corp. gas boiler models. These boilers must also
be equipped with a plate which states that the boiler may be
used with a Slant/Fin Corp. automatic vent damper device and
indicates the proper vent damper model number. This device
cannot be used with millivolt ignition system.
A. INSTALLATION INSTRUCTIONS BEFORE YOU START TO
INSTALL
1. Read this installation manual, the "DANGER" plate
attached to the top of the boiler, the "WARNING" on the
wiring diagrams, vent damper carton and operator cover.
2. Perform pre-installation inspection as required by ANSI
specification Z21.66. (See Vent Damper Instructions.)
3. Select a proper, convenient location for vent damper.Vent
damper may be installed vertical or horizontal on all mod-
els (see figures 1, 2 and 3).
5
Sentr y
Figure 1. Vertical Installation of Vent Damper on
Sentr
y “SX”Boilers
Figure 2. Vertical Installation of Vent Damper on Sentry “S”
Boilers
Figure 3.
Horizontal or Sloping Installation of Vent Damper
4. Carefully unpack the unit. DO NOT FORCE IT OPEN OR
CLOSED. Forcing the damper may damage the gear
train and void the warranty.