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Installation and Operation Manual
Creosote Formation – When combustion is not complete or when the wood doesn't burn completely, unburned
gases are given off. These unburned gases will be drawn through the boiler into the smoke pipe and
exhausted through the chimney; when these gases cool down, creosote results. The colder the gases get the
harder the creosote forms; the harder if forms the harder it is to remove. Creosote is still combustible and it
will burn uncontrollably if ignited. The rate of creosote formation can be limited by:
1. Burning only seasoned dry firewood – establish a routine for the proper storage of firewood, to ensure it
has an opportunity to properly dry.
2. Maintaining hot fires – add firewood according to the need for heat, therefore limiting the need for air
damper closure. A small intense fire is preferable to a large smoldering one to reduce the amount of
creosote deposits
Solid-fuel-burning appliances need to be cleaned frequently because soot, creosote, and
ash can accumulate. Beware that the rate creosote is deposited can vary with the season,
hotter fires mean less creosote, while monthly cleanings may be sufficient in the coldest
months, weekly cleanings may be necessary during more mild weather.
Prolonged Power Failure – To operate the boiler for prolonged power outages, manually open all zone valves to
allow thermal circulation (note: the normally open Dump Zone valve should already be open). Working with a
small fire, manually operate the air dampers to regulate heating – DO NOT prop or fix the dampers in the open
position. The rate of heat dissipation is limited to thermal circulation only, so regulate the fire accordingly.
NOTICE: applications where the radiation is below the level of the boiler may not provide sufficient thermal
circulation – in such applications, the boiler cannot be operated during a power outage.
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WF200
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