Manually loaded, wood boiler sizing, buffer tank and safety valves.

For property owners looking to cut their heating bills an alternative to oil boilers, gas boilers or electric heat pumps. 

For manually loaded wood boiler sizing we can use a general rule, every 100 square meters of floor space at around 3 meters in height will require 10kW of boiler power output. 

Our manually loaded wood burning solid fuel boilers, have fire boxes that vary in size depending on power output. For example a 20 kW DWB / DWBi boiler has a fire box volume of 65 litres and a 30kW boiler holds up to 130 litres of fuel. 

To take advantage of larger fire boxes and thus requiring less refuelling, boilers can be oversized, by how much depends on and if a buffer tank is used. Click HERE for buffer tank information. 

If no buffer tank is used boiler can spend long times smouldering and might struggle to get rid of the heat, so selecting correct power output is important. 

For customers using a boiler without a buffer tank we recommend matching the boiler closely to house sizing and use of our thermal relief valve (click here for info) with incorporation of a leak off radiator.

Table below is a good look up guide of a required boiler size for a homes, based on square area of the building. (1m2 is roughly 10 sqft).

When measuring for square area calculation, the outside dimensions of the propertyare sufficient. 

 

If you have any questions regarding product selection, please get in touch, contact details can be found by clicking a link HERE.