Fully automatic, condensing direct fired water heater for domestic hot water.

7 models available with continuous outputs (@44°C ∆T) of 600, 630, 970, 1200, 1700, 2000 & 2400 l/h.

 

Efficiency 98 product icon
Fuel NG LPG product icon
Warranty 2 product item
ErP Part L Compliant product icon
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  • Power outputs 30-119kW and storage capacities of 227-504 litres.
  • Safe and clean domestic hot water generation.
  • Reduces energy use and running costs by maximising condensing water heater performance.
  • Meets the strict standards for efficiencies and NOx emissions in new buildings.
  • Ultra-quiet operation means it can be installed close to point of use without disturbance to occupants.
  • Closely matches hot water demand, reducing wastage.
  • Down firing pre-mix modulating burner reduces the risk of scale build up impacting on the heat transfer.
  • Large range of time and temperature control features built in as standard.
  • Electronic Anode fitted as standard.
  • Natural gas and lpg water heater options.
  • Easy access for service and maintenance.
  • Full project assistance available from our dedicated hot water expert to help with hot water sizing and selection of equipment to match the application.
  • Extensive back up and support from our team of experienced engineers across the UK.
  • Long term commitment to spare parts.
  • Water heater BIM objects available to assist in project design and management.
  Dorchester DR-FC Evo model Units DR-FC Evo 25 DR-FC Evo 30 DR-FC Evo 45 DR-FC Evo 60 DR-FC Evo 80 DR-FC Evo 95 DR-FC Evo 120
Energy Building Regulations thermal efficiency gross % 96 98 96 95 97 95 95
ErP efficiency rating (modules ≤ 70 kW only) - A A A A N/A N/A N/A
Heating-up time, ΔT = 44°C min. 23 37 24 20 19 16 13
Heating-up time, ΔT = 50°C min. 26 42 27 23 21 18 15
Heating-up time, ΔT = 55°C min. 29 46 30 25 23 20 16
Standby losses kW/24h 4.2 4.7 4.7 4.7 6.7 6.7 6.7
Water Continuous output with 44°C ΔT l/h 600 630 790 1200 1700 2000 2400
1st hour output with 44°C ΔT l 730 870 1300 1500 1900 2200 2600
Continuous output with 50°C ΔT l/h 530 560 850 1100 1500 1700 2100
1st hour output with 50°C ΔT l 630 730 1100 1300 1700 1900 2300
Continuous output with 55°C ΔT l/h 480 510 780 930 1300 1600 1900
1st hour output with 55°C ΔT l 560 640 930 1100 1500 1700 2000
Storage capacity litres 227 386 386 386 504 504 504
Maximum operating water pressure (open vented) bar 8 8 8 8 8 8 8
Maximum operating water pressure (unvented) bar 5.3 5.3 5.3 5.3 5.3 5.3 5.3
Expansion relief valve setting (unvented kit) bar 6 6 6 6 6 6 6
ErP load profile - XXL XXL XXL XXL 3XL 3XL 3XL
Nat Gas Input, gross – maximum kW 31.6 32.6 51.2 62.1 85 103.4 126.3
Output – maximum kW 30.5 32 49.3 59.3 82.6 98.7 119.4
Gas inlet pressure – nominal mbar 20 20 20 20 20 20 20
Gas flow rate – maximum @1013.25 mbar and 15°C m3/h 3.1 3.2 5 6 8.3 10.1 12.3
LPG Input, gross – maximum kW 31 32 50.1 60.8 83.2 101.2 123.6
Output – maximum kW 30.5 32 49.3 59.3 82.6 98.7 119.4
Gas inlet pressure – nominal mbar 37 37 37 37 37 37 37
Gas flow rate – maximum@1013.25 mbar and 15°C kg/h 2.3 2.3 3.7 4.4 6.1 7.4 9
Flue Approximate flue gas volume @15°C, 9.8% CO2, N.T.P. (Nat. Gas - G20) kg/h 51.7 53.5 84.6 103.7 141.9 172.9 213.3
Flue gas temperature – maximum °C 45 50 60 65 50 55 60
NOx emission, dry air free,European Class 5. Maximum (at part load) mg/kWh 24 32 36 37 34 36 37
Pressure at the flue outlet only (B23) with zero pressure at air inlet Pa 52 62 133 173 88 126 180
Electrical Start current–maximum (maximum power) A (W) 0.59 (135) 0.59 (135) 0.59 (135) 0.59 (135) 0.61 (140) 0.61 (140) 0.61 (140)
Run current–maximum (maximum power) A (W) 0.2 (45) 0.2 (45) 0.32 (75) 0.5 (115) 0.41 (95) 0.63 (145) 1.05 (240)
Electrical supply Vac 230 V 1 PH 50 Hz 230 V 1 PH 50 Hz 230 V 1 PH 50 Hz 230 V 1 PH 50 Hz 230 V 1 PH 50 Hz 230 V 1 PH 50 Hz 230 V 1 PH 50 Hz
Voltage tolerance % of Vac -15% +10% -15% +10% -15% +10% -15% +10% -15% +10% -15% +10% -15% +10%
Misc. Noise level @2m from flue terminal dB(A) <45 <45 <45 <45 <45 <45 <45
Number of (power) anodes - 1 2 2 2 2 2 2
Weight when empty kg 196 239 239 239 405 405 405
Approximate shipping weight kg 215 260 260 260 426 426 426
Maximum floor load/ weight filled with water kg 423 625 625 625 909 909 909
  Title Type Size  
Dorchester DR-FC Evo brochure Dorchester DR-FC Evo brochure Product brochures 3411 ko Download
Dorchester DR-FC EVO water heater dimensions Dorchester DR-FC EVO water heater dimensions Dimensions 137 ko Download
Dorchester DR-FC EVO technical data table Dorchester DR-FC EVO technical data table Data tables 87 ko Download
Dorchester DR-FC Evo 25-120 installation manual Dorchester DR-FC Evo 25-120 installation manual Installers guides 4053 ko Download
Dorchester DR-FC Evo hydraulic schemes Dorchester DR-FC Evo hydraulic schemes Hydraulic schematics 249 ko Download
Dorchester DR-FC-Evo 120 CAD Dorchester DR-FC-Evo 120 CAD CAD 49 ko Download
Dorchester DR-FC-Evo 25 CAD Dorchester DR-FC-Evo 25 CAD CAD 48 ko Download
Dorchester DR-FC-Evo 30 CAD Dorchester DR-FC-Evo 30 CAD CAD 48 ko Download
Dorchester DR-FC-Evo 45 CAD Dorchester DR-FC-Evo 45 CAD CAD 48 ko Download
Dorchester DR-FC-Evo 60 CAD Dorchester DR-FC-Evo 60 CAD CAD 48 ko Download
Dorchester DR-FC-Evo 80 CAD Dorchester DR-FC-Evo 80 CAD CAD 49 ko Download
Dorchester DR-FC-Evo 95 CAD Dorchester DR-FC-Evo 95 CAD CAD 50 ko Download
Dorchester DR-FC EVO water heater wiring diagram Dorchester DR-FC EVO water heater wiring diagram Wiring diagrams 64 ko Download
Dorchester DR-FC-Evo seasonal efficiency sheet Dorchester DR-FC-Evo seasonal efficiency sheet Seasonal efficiency sheets 86 ko Download
  • New build projects.
  • Large commercial and public buildings including schools, hospitals and hotels.
  • Locations with substantial and continuous hot water demands including hospitals, hotels and sports facilities.
  • To see where Dorchester condensing water heaters have been used, visit the case study section of our website.
  • Unvented water supply kit - essential for any unvented application and includes an expansion vessel sized for the water heater and local pipework only.
  • Top to bottom pump recirculation pump kit to prevent stratification and protect against legionella within the water heater.
  • Remote monitoring unit.
  • Room Sealed Flue Systems:
    • Concentric flue systems type C13–Horizontal termination.
    • Concentric flue systems type C33–Vertical termination.
    • Twin duct flue systems type C53–Vertical flue termination with Horizontal air inlet.
  • Conventional Open Flue Systems:
    • Open flue systems type B23–Vertical termination.
  • Choose from a wide range of service contracts to help maintain optimum performance.
  • Ensure your new Hamworthy products are set to our recommendations and benefit from improved warranty terms with a commissioning package.