5
March 2011
Flex Fuel Owner’s Manual
2: Terms
Flex fuel
- Hydronic heater designed to burn multiple wood fuel types
Furnace/Boiler
AKA appliance, stove - An apparatus in which heat may be generated, as for heating
homes, buildings, pools and radiant heat via water
Seasoned Wood
- Wood that has dried to an internal moisture content of 25% or less
Cord Wood
- Lengths of wood that are typically 8’ long
Chunk Wood
- Pieces cut from cord wood that have not been split or seasoned
Bulk Materials
- Split, seasoned wood cut less that 26” long
Kindling
- Small, easily combustible material for starting a fire
Green Wood
- Wood that is recently cut and has a high moisture content
Pellets
- Wood sawdust compressed into small cylinders to be used as fuel
Flue
- AKA Chimney - Any duct or passage for air, gas, or exhaust
Air Factor
- Indicator of oxygen level of the flue gas
Display
- AKA Eco manager - screen for user to change settings and parameters
I/O Board
- Input/output board that controls the furnace functions
Firebox
- Chamber where fuel is loaded or conveyed
Water Jacket
- Steel casing that surrounds the firebox and holds the water/antifreeze
Funnel
- Casting located on the bottom of the firebox
Insert
- Replaceable part designed for particular fuels located in the funnel grate
Refractory
- Bricks of various shapes lining the ash chamber causing gasification
Turbulator
- Cleaning mechanism located in heat exchangers that also increase efficiency
Draft Inducer
- Fan that manages the combustion process
Igniter
- Hot air blower for igniting fuel
Gasification
- Extracting gas from the wood to be burnt to heat water
Buffer
- AKA Thermal Storage - Tanks used to store hot water