Warm-air heating exploits heat from waste-wood burner

Despite a refurbished factory in Norwich having an unusual design that would normally impede effective airflow, Reznor has provided a successful warm-air heating solution. The 3000 m2 factory was stripped to its shell when Quantum Industries, which makes retail display joinery, moved in. The new heating system was designed to avoid temperature stratification and to redistribute heat from a wood burner to reduce running costs. The building has a 7 m-high central section, with wings 8 m wide and 4 m high running down each side. The Reznor solution uses just six units, all positioned at high level above the central section. It is said that conventional heating solutions would have required many more units to achieve constant warmth throughout the factory. The UDSA1— high-performance downflow units were installed by Custance & Son Ltd. These heaters have 2-stage burners, so that when any of the six independent zones reach the 16°C setpoint, adjacent heaters will reduce to low fire. Heater fans, however, continue to run at full speed so that heat from the waste-wood burner is evenly distributed. To prevent stratification, the heaters are controlled by a thermostat that starts the fan without the burner firing when the air in the high roof space rises above 20°C to direct this heated air downwards.

Related links:

• www.reznor.co.uk