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The Dorchester range of direct fired water heaters from Hamworthy has been extended to include the DR-LL and DR-XP.
The Dorchester DR-LL is an atmospheric low NOx water heater specifically designed to meet the requirements of ErP regulations. The integral stainless steel burner produces low NOx emissions (34-45 mg/kWh) and benefits from an automatic gas/air premix burning system for increased efficiency. The water heater is available as three models with continuous outputs (50°C ∆T) of 85º to 1600 litres/hour, recovery rates from 12 to 23 minutes and a working pressure of up to 8 bar help to meet the demands of bigger buildings.
The Dorchester DR-XP is a condensing water heater with stainless steel tank available in two models (38-50kW input) of 184 litres. With an ErP efficiency of 91% – 93% and NOx emissions ≤ 53 mg/kWh, it is compliant with the latest ErP regulations that were further restricted in 2018.
Thanks to the grade 444 stainless steel tanks, no anodes are required to protect it from corrosion, suiting it for soft water areas.