Ensbury pressure jet boiler
Low temperature, high efficiency, floor standing steel boiler.
Available in 3 models with outputs (at 80/60°C) of 440, 510 and 580kW.
Product information
- Advanced return distribution within boiler allows operation with return temperatures as low as 15°C. (Minimum flow temperatures apply).
- Operating efficiencies of up to 95% nett (86% gross) at part load.
- Suitable for use on open vented or sealed low temperature hot water heating systems .
- Robust three-pass heat exchanger design helps to achieve European Class 5 performance for NOx emissions.
- Suitable for use with liquid biofuel as a renewable energy choice. Natural Gas, LPG (propane) or oil are other fuel options.
- Extensive back up and support from our team of experienced engineers across the UK.
- Long term commitment to spare parts.
Technical data
| Units | ELT440 | |
|---|---|---|
| Energy | ||
| Building regulations Part L seasonal efficiency | % gross | 85.05 |
| Boiler output 80/60°C | kW | 440 |
| Boiler input (gross) - maximum | kW | 537 |
| Boiler input (nett) - maximum | kW | 483 |
| Boiler output - minimum 80/60°C, NG | kW | 100 |
| Boiler output - minimum 80/60°C, oil | kW | 127 |
| Water | ||
| Water content | litres | 540 |
| System design flow rate @ 20°C ∆T rise | l/s | 5.26 |
| Water side pressure loss @ 20°C ∆T rise | mbar | 20 |
| System design flow rate @ 10°C ∆T rise | l/s | 10.53 |
| Water side pressure loss @ 10°C ∆T rise | mbar | 81 |
| Water flow rate - minimum | l/s | No min flow rate |
| Minimum water pressure | barg | 0.5 |
| Maximum water pressure | barg | 4 |
| Maximum water flow temperature | °C | 90 |
| Minimum water flow temperature - NG | °C | 60 |
| Minimum water flow temperature - oil | °C | 50 |
| Minimum water return temperature | °C | 15 |
| Gas | ||
| Gas flow rate, NG - maximum | m3/hr | 51.2 |
| Inlet pressure for NG - nominal | mbar | 20 |
| Inlet pressure for NG - maximum | mbar | 50 |
| Input rate for oil (35sec) | l/h | 50.8 |
| Flue | ||
| Approx. flue gas volume @ 15°C, 9% CO2, N.T.P | m3/hr | 614.9 |
| Flue gas temperature @ 80/60°C | °C | 182 |
| Combustion chamber resistance | mbar | 2.53 |
| Connection | ||
| Water flow/return connections | PN6 - DN80 | |
| Gas inlet connection pipe thread size | Rc1 ½" | |
| Safety valve connection | Rc1 ½" | |
| Drain connection | R1" | |
| Flue diameter (O/D) - nominal | mm | 250 |
| Electrics | ||
| Electrical supply for boiler | 230V 1Ph 50Hz | |
| Electrical supply for burner | 230V 1Ph 50Hz* | |
| Approx shipping weight (excluding burner) | kg | 973 |
| *400V 3Ph 50Hz Dependant on burner selection |
FAQ
Ideal uses/applications
- New build projects.
- Housing developments and flats using district heating networks.
- Large commercial and public buildings including schools, hospitals, offices and hotels.
- Medium sized commercial and public buildings including schools, hospitals, offices and hotels.
- Rural locations without access to mains gas supply.
- Locations with substantial and continuous heating loads including hospitals, care homes and hotels.
- To see where our Ensbury boilers have been used, visit our case studies page.
Optional extras
- Can be installed with the Arne flue gas economiser to increase operating efficiency by up to 18%.
- Choose from a wide range of service contracts to help maintain optimum performance.
- Book commissioning at the same time as placing your order for improved warranty terms.
- Flues available through our flue partner Jeremias UK.
Often bought with
Case studies
Pitfield Street, London
Sector: Residential and commercial
Project: A 100% liquid biofuel boiler proved to be the greenest heating option for a city centre development consisting of 16 flats and a commercial unit.
Building: New build flats and retail space
Application: Space heating. Renewable energy
Learn more
Drayton Manor Hotel, Staffordshire
Sector: Hotel and leisure
Project: Guests benefit from the installation of three new Dorchester DR-FC Evo water heaters and two Ensbury LT 370 low temperature steel boilers.
Building: New build hotel
Application: Domestic hot water, 5787 litres/hour. Space heating, 740kW
Learn more
Christchurch Police Station
Sector: Public sector
Project: Steel boilers from Hamworthy were the ideal solution for this dual-purpose building in Dorset.
Building: Dual-purpose building – police station and adult education centre
Application: Space heating
Learn more