Bonus Plus Instructions Tarm Biomass 1-800-782-9927 Version 11/14 Page 40
4.10.7 Checking the Barometric Damper
Annually check the barometric damper flap for ease of operation. The barometric damper flap should
operate freely and maintain a chimney draft between -0.04 to -0.06 inches water column.
4.10.8 Cleaning the Jacket
Soot on the jacket and the doors can be removed with a cleaner containing ammonium chloride and
acetic acid. Clean the jacket regularly as required to preserve the boiler’s appearance.
4.10.9 Check for Creosote Build-up
Check for creosote buildup in the heat exchange tubes, the smoke pipe and the chimney twice a
month. If during cleaning and maintenance a buildup of creosote is noted anywhere besides the fire-
box, something is wrong with the boiler operation. Check the seal of the door gaskets, the load door
to the smoke duct and the smoke box cover.
4.10.10 Seasonal Shutdown Procedure
If the boiler is not being used during the summer season, it is important that the boiler be properly
cleaned. The upper and lower combustion chambers, heat exchanger tubes and upper smoke baffle
should all be cleaned. After the boiler is cleaned, keep all doors and air dampers closed. Remove the
flue pipe and stuff insulation into the flue collar. If you notice condensation forming on the inside of
boiler, hang a 15-25 watt light bulb inside boiler.
4.10.11 Checking the Pressure Relief Valve
The pressure relief valve protects the system from dangerously high pressure by opening at a preset
pressure rating to allow fluid to be safely released. The pressure relief valve should be seated properly
and not drip system water. The pressure relief valve should be inspected and maintained according to
the manufactures recommendations.
4.10.12 Checking System Pressure
The system expansion tank in a closed system allows for the thermal expansion of the fluid in the
heating system. See the expansion tank’s operating instructions for maintenance requirements.
4.10.13 Heat Storage System Maintenance
As described above, the Bonus Plus boiler needs to be installed with a thermal storage system or
other heat storage system. Please follow the recommended maintenance schedule for these parts of
the heating system. Specific maintenance items for the heat buffer will be specified by the system
manufacturer, but items may include checking any safety valves, anode in any connected hot water
reservoir, or system water level and system PH in static water storage systems.
4.11 Power Outages
The boiler will not operate in the event of a power failure. Do not open the loading or ash doors until
power is reestablished. The fan needs to be able to operate to remove combustible gasses. It is good
practice to close the primary and secondary air dampers (move the dials counter-clockwise to first
position). Remember to open the dampers before the next firing.
Boiler Operation, Maintenance, and Service > Cleaning and Maintenance
WARNING
Creosote-Formation and Need for Removal-When wood is burned slowly, it produces tar
and other organic vapors, which combine with expelled moisture to form creosote. The
creosote vapors condense in the relatively cool chimney flue of a slow burning fire. As a
result, creosote residue accumulates on the flue lining. When ignited this creosote makes
an extremely hot fire.
Содержание Bonus Plus 30
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