9
FIG. 11
VENT DAMPER POSITION INDICATOR
NOTES FOR CANADA ONLY
1.
Canadian Standard CAN1-2.28-M81 prohibits the use of
vent dampers on propane fired appliances equipped with
intermittent ignition.
2.
In Canada, the vent damper must be attached directly to
the flue outlet collar, with the exception of the 2 section
boiler, where the 3- to 4-inch adapter is supplied with the
vent damper.
No other interconnectng pieces are allowed between the
boiler and the vent damper.
3.
In Canada, vent dampers are not an option. Boilers are
either factory built for use with a vent damper and the vent
damper is supplied with the boiler, or they are factory built
for use without a vent damper. In the second case a vent
damper cannot be installed later.
TYPICAL INSTALLATION FOR VENT DAMPER
NOT CAUTION AND FOOTNOTES
1. Install the vent damper to service only the single
appliance for which it is intended. If improperly
installed, a hazardous condition, such as an explosion
or carbon monoxide poisoning, could result.
2. Do not install the vent damper on pipe curve.
3. Do not run wires near high temperature surfaces. Use
stand-off brackets if necessary.
For safe, efficient operation, the vent damper and all flue product
carrying areas of the appliance must be checked annually by
you, with particular attention given to deterioration from
corrosion or other sources. If you see corrosion or other
deterioration, contact your heating contractor for repairs. Check
vent damper operation as follows:
1.
When the boiler is off, check that the vent damper positions
indicator points to the closed position, Fig. 11.
2.
Turn the thermostat or controller up to call for heat and
check the vent damper indicator points to the open
position, Fig. 11.
3.
Turn the thermostat or controller down again and check
that the damper position indicator returns to the closed
position.
MANUAL OPERATION OF THE VENT DAMPER
The vent damper may be placed in the open position to permit
burner operation by using the “HOLD DAMPER OPEN” switch,
located on the damper controller. The thermostat will control
the burner firing as before, while the damper will remain open.
DO NOT
turn damper open manually or motor damage will
result. Set switch to “AUTOMATIC OPERATION” to close vent
damper during burner off cycle.
For further information, and for a vent damper troubleshooting
guide, refer to the manual that was packaged with the vent
damper.
The vent damper must be inspected at least once a year
by a trained, experienced service technician. The name of
the person who originally installed your vent damper is
shown on the installation label.
Summary of Contents for PVWB
Page 24: ...14683002 Rev 3 November 2004...
