Sentinel
5
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 LTD/LTEE vent damper.
I. This device is design certified by CSA for use ONLY on spe-
cific Slant/Fin gas boiler models. These boilers must also
be equipped with a plate which states that the boiler must
or may be used with a Slant/Fin automatic vent damper
device and indicates the proper vent damper model num-
ber. This device cannot be used with a millivolt ignition
system.
II. 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 opera-
tor cover.
2. Perform pre-installation inspection as required by
ANSI specification Z21.66 or CSA B 149.1 latest edi-
tion for natural gas and propane.
3. Turn off all electrical power, gas supply and wait for
system to cool (for previously installed boilers).
4. Carefully unpack the unit. DO NOT FORCE IT OPEN
OR CLOSED! Forcing the damper may damage the
gear train and void the warranty.
5. This device must be installed after the appliance draft
hood (between the draft hood outlet and the connec-
tor to the outdoor chimney or vent) as close to the
draft hood as practicable, and without modification of
the draft hood or the damper. (See figures 1 and 2.)
6. The inlet size of the vent damper must be the same
nominal trade size as the outlet of the draft hood.
7. This 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. (See fig. 5.)
8. Clearances of not less than 152 mm (6 inches) must
be maintained from combustible materials, with pro-
visions for access for service.
Figure 3.
Vent damper dimensions
Figure 1.
Figure 2.
* Install operator in any position as shown above. DO NOTinstall
the operatorabove the vent pipe (to avoid excessive heat) or
below the vent pipe (to avoidpossible condensation damage).
WARNING—DANGER
Once you have begun vent damper installation procedure,
DO NOT restore electric power and gas supply until installa-
tion and inspection have been completed (in order to pre-
vent the main burners from operating). DO NOT operate the
boiler until the vent damper harness "FEMALE PLUG" is
plugged into "MALE PLUG" (as described in the installation
instructions), and the vent damper installation and checkout
procedures have been completed. Failure to observe this
warning may create a hazardous condition that could cause
an explosion or carbon monoxide poisoning.
22 mm (
7
/
8
") DIA.K.O.
TABLE
Vent
102 mm
127 mm
152 mm
178 mm
203 mm
229 mm
254 mm
Size
(4")
(5")
(6")
(7")
(8")
9(")
(10")
A
237 mm
262 mm
287 mm
313 mm
338 mm
364 mm
389 mm
(9
5
/
16
")
(10
5
/
16
")
(11
5
/
16
")
(12
5
/
16
")
(13
5
/
16
")
(14
5
/
16
")
(15
5
/
16
")
