Slant/Fin S-150 Vestibule version - Manual (Page 5)

5
Sentry
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.
VENT 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.
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 and 2).
4. Carefully unpack the unit. DO NOT FORCE IT OPEN OR
CLOSED. Forcing the damper may damage the gear
train and void the warranty.
B. 1. This device must be installed after the boiler draft hood
(between the draft hood outlet and the connector to the out-
door chimney or vent) as close to the draft hood as practi-
cable, and without modification of the draft hood or the vent
damper. (See figures 1, 2 and 3.)
2. The inlet size of the vent damper must be the same nomi-
nal trade size as the outlet of the draft hood.
3. This device must be located in a venting system or section
of a venting system so that it serves only the single appli-
ance for which it is installed. (See figure 3.)
4. Clearances of not less than 6 inches (152MM) must be
maintained from combustible materials, with provisions for
service access.
C. AFTER INSTALLATION:
1. Operate system through two complete cycles to check for
opening and closing in proper sequence, and proper burn-
er operation. DAMPER MUST BE IN OPEN POSITION
WHEN BOILER MAIN BURNERS ARE OPERATING.
2. Perform installation checks as required by ANSI specifica-
tion Z21.66. (See Vent Damper Instructions.)
3. Check the troubleshooting section if problems arise with the
installation.
Figure 1. Vertical Installation of Vent Damper on Sentry “S”
Boilers
Figure 2. Horizontal Installation of Vent Damper
Figure 3.
WARNING—DANGER
Once you have begun vent damper installation procedure, DO
NOT restore electric power and gas supply until installation and
inspection have been completed (in order to prevent the main
burners from operating). DO NOT operate the boiler until the vent
damper harness is plugged into vent damper operator. Failure to
observe this warning may create a hazardous condition that
could cause an explosion or carbon monoxide poisoning.