Slant/Fin Sentry Series - Manual (Page 2)

INTRODUCTION
This product is an automatic, motorized stack damper that has been
developed to increase the efficiency of heating systems by reducing
standby losses from the heating apparatus and the conditioned air
space. The damper closes the chimney vent when the burner is off
and fully opens it when combustion is required. The concept is similar
to the opening and closing of a fireplace flue, except that the operation
is completely automatic. An interlock has been added which prevents
burner operation unless the damper is in an open position. A closed
damper substantially reduces standby losses on boilers.
DESCRIPTION
The unit must be installed after the appliance draft diverter and as
close to it as practicable, without modification of the draft hood. When
the damper is in the closed position, it will prevent residual heat in the
heating appliance from being drawn up the chimney vent by its natural
draft. If located within a heated area, a closed damper will also pre-
vent conditioned air from being pulled through the draft diverter and
up the chimney by the same stack effect.
When combustion is required, the damper will rotate to its open posi-
tion BEFORE an integral end switch activates the burner circuit. If the
damper does not rotate to its open position, the burner circuit will not
be activated.
When the heating requirement has been satisfied, the burner will go
off immediately, and the damper will rotate to its fully closed position.
Potential fuel savings can vary based on the following factors:
1. Geographical location of dwelling
2. The size of heating plant relative to heat loss
of dwelling
3. Location of heating plant within dwelling
4. Diameter of venting system
5. Total height of chimney above heating plant
6. Outdoor temperatures over a given period of time
7. Sustained wind velocities over a given period of time
8. Settings of operating and limit controls on heating plant
9. Source of domestic hot water, temperature of water, and
amount used
10. Room thermostat settings
11. Infiltration factors of dwelling
12. Number of heating zones
13. Day/night thermostats
14. Presence of other vents and exfiltration factors
15. Chimney vent friction
ELECTRICAL
Minimum Wiring
Requirements
24VAC,18 gauge, 90°C
Thermostat Anticipation
Flair0.1 AMP + control circuit
Honeywell Inc. 0.2 AMP + control circuit
Johnson
0.2 AMP + control circuit
Field Controls (Effikal) 0.1 AMP + control circuit
FEATURES
100,000 trouble-free operations in life cycle test • Burner "OFF" before
start of damper close • Normal burner operations with damper dis-
abled open • No burner operation with damper disabled closed •
External damper position indicator • Direct drive, no-linkage and
switch for burner off/on cycle • Low voltage (24V) circuitry compatible
with standing pilot and intermittent ignition devices • CSA
retrofit certification ANSI Z21.66 - latest edition • "Free-wheeling" per-
mits free rotation of vane during installation without motor damage •
Both operator motor and operator control (P.C. board) are replaceable
INSTALLATION INSTRUCTIONS
I. Before you start to install
1. Read this installation manual, vent damper manufacturer’s
instructions, the "WARNING" label attached to the top of the
boiler, the "WARNING" on the wiring diagram and the “DAN-
GER” label on the vent damper carton.
2. Perform pre-installation inspection as required by ANSI specifi-
cation Z21.66. See manufacturer’s vent damper instructions.
3. Turn off all electrical power, gas supply and wait for system to
cool (for previous installed boilers).
4. Select a proper, convenient location
(see figures 3, 4, 6 and 7).
5. Carefully unpack the unit. DO NOT FORCE IT OPEN OR
CLOSED! Forcing the damper may damage the gear train and
void the warranty.
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 oper-
ating). DO NOT operate the boiler until the vent damper harness
"RECEPTACLE B" is plugged into "MALE PLUG" (as described in the
installation instructions), and the vent damper installation and check-
out procedures have been completed. Failure to observe this warning
may create a hazardous condition that could cause an explosion or
carbon monoxide poisoning.
II. Now, proceed as follows for Boilers with input under 300,000
Btu/hr.:
1. Remove the front cover of the boiler (Galaxy models only)
exposing the wiring compartment. With all electrical power to
boiler off, locate “MALE PLUG”. Refer to the wiring diagram
attached to boiler. A copy of the wiring diagram may also be
found in the boiler installation manual. To find the correct wiring
diagram in installation manual, match the number found in the
lower right hand corner of the boiler wiring diagram with the
identical number on one of the diagrams in the manual.
2. This device must be installed on top of the draft hood or divert-
er in position as shown in figures 3, 4, 5, 6 and 7. The vent
damper must be installed so that the damper position indicator
is in a visible location after installation for position indicator
description. The arrow imprint on the damper should point in
direction of vent gas flow (towards chimney). Flue pipe (other
than flue collector on boiler) insertion depth for the male end
should not exceed one inch into the vent damper. Be sure the
vent damper is well seated and fasten with 3 sheet metal
screws. Screws should be no longer than 1/2 inch.
3. Be sure that
undersized vent pipe does not block move-
ment of damper vane
4. NOTE:
Galaxy 300,000 Btu/hr. Standing Pilot boilers, and Intermittent
Pilot (IID) boilers 300,000 Btu/hr and larger may have a vent
damper (see page 1). They are factory wired with “MALE
PLUG” and “RECEPTACLE A”. To install the vent damper, cut
the RED wire connected between number 3 and 4 of
“RECEPTACLE A” (the only wire connected to this receptacle)
and then disconnect “RECEPTACLE A” from “MALE PLUG”.
Remove “RECEPTACLE A” from job site and discard. Boilers
that must have a vent damper (boilers with input under
300,000 Btu/hr.) are factory wired with “MALE PLUG” only.
5. a)
Galaxy boilers: Attach the flexible metallic conduit vent
damper harness to the right hand side of the jacket by
passing the free end (“RECEPTACLE B”) of the harness
through the 7/8" diameter hole in the top of the jacket, and
using the BX connector at the free end of the metallic con-
duit, fasten to jacket. Connect “RECEPTACLE B” into
“MALE PLUG” (see correct wiring diagram). Attach the
other side of the vent damper harness to vent damper oper-
ator (if not attached) and connect Molex connector to oper-
ator receptacle. For more information, see Galaxy installa-
tion manual, GG-40.
b)
Sentry and Sentinel boilers: All Slant/Fin Sentry and
Sentinel boilers are supplied with vent damper. “MALE
PLUG” and “RECEPTACLE B” are in control box. For vent
damper installation instruction see Sentry installation
manual, S-40 or Sentinel installation manual SE-40.
6. All Slant/Fin Corp. Galaxy
steam boilers equipped with inter-
mittent pilot ignition and continuous (standing) pilot systems
are factory wired except for the wires to the low water cut-off
and pressure cut-off. Wire these controls with wire provided
with boiler (see boiler wiring diagram on boiler). Then follow
previous instructions shown in 4 and 5 above.
7. Follow instruction for electrical wiring in boiler installation man-
ual (Galaxy, GG-40; Sentry, S-40 or Sentinel SE-40) or restore
electrical power and turn on gas supply (for previously installed
boilers). See wiring diagram attached to the boiler or in boiler
installation manual.
GENERAL INFORMATION
VENT
SIZE
APPROX SHIP WT.
(WITH HARNESS) IN LBS.
4"
5"
6"
7"
8"
9"
10"
3.5
3.5
4
4.5
5
6
7