Dorchester DR-CC condensing  water heater
Dorchester DR-CC condensing  water heater cutaway
Dorchester DR-CC condensing  water heater

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

9 models available with continuous outputs (@44°C ∆T) of 228, 233, 374, 461, 465, 602, 608 & 614 l/h.

Efficiency 98 product icon
Fuel NG LPG product icon
Warranty 2 product item
ErP Part L Compliant product icon
BIM objects icon

Product information

    • Low power outputs 11-29kW and storage capacities of 162-384 litres.
    • Compact, standalone water heating unit for safe and clean domestic hot water generation.
    • No clearances required at the rear and minimal clearances at top and sides allow easy siting in any plant room.
    • Reduces energy use and running costs by maximising condensing water heater performance.
    • Meets the strict standards for efficiencies and NOx emissions (under 37 mg/kWh) in new buildings.
    • Load profiles of XL or XXL and an A rating ensure all models in the range are fully compliant with the ErP (Energy-related Products Directive) regulations introduced in September 2018.
    • Closely matches hot water demand, reducing wastage of energy.
    • Electronic Anode fitted as standard to protect against corrosion.
    • No top-to-bottom re-circulation kit required due to the heat exchanger coil positioned in the centre of the unit for even heat distribution and reduced likelihood of stratification.
    • Down firing pre-mix modulating burner reduces the risk of scale build up impacting on the heat transfer.
    • Natural gas and LPG water heater options.
    • All components accessible under front cover for ease of service and maintenance.
    • Flexible flue options (see optional extras tab and brochure for details).
    • 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.
    • BIM objects available to assist in design and management.

Technical data

Units DR-CC 12-160
Continuous output with 44°C ΔT l/h 228
1st hour output with 44°C ΔT l 360
Continuous output with 50°C ΔT l/h 201
1st hour output with 50°C ΔT l 310
Continuous output with 56°C ΔT l/h 180
1st hour output with 56°C ΔT l 270
Storage capacity litres 162
Maximum working pressure bar 8
ErP load profile - XL
Building Regulations thermal efficiency gross % 96
ErP efficiency rating - A
Heating-up time, ΔT = 44°C min. 27
Heating-up time, ΔT = 50°C min. 31
Heating-up time, ΔT = 56°C min. 34
Standby losses kW/24h 2.16
Nat Gas
Input, gross – maximum kW 12.1
Input, net - maximum kW 10.9
Output – maximum kW 11.7
Gas inlet pressure – nominal mbar 20
Gas flow rate – maximum @1013.25 mbar and 15°C m3/h 1.2
Input, gross – maximum kW 11.8
Output – maximum kW 11.4
Gas inlet pressure – nominal mbar 37
Gas flow rate – maximum@1013.25 mbar and 15°C kg/h 0.8
Flue gas temperature – maximum °C 42
NOx emission, dry air free* mg/kWh 22
Pressure at the flue outlet only (B23)** Pa 33
Start current–maximum (maximum power) A (W) 25
Run current–maximum (maximum power) A (W) 85
Electrical supply Vac 230V 50Hz
Voltage tolerance % of Vac -15% +10%
Noise level dB(A) 41
Number of anodes - 1
Weight when empty kg 95
Approximate shipping weight kg 114
Maximum floor load/ weight filled with water kg 255
*European Class 6. Max (at part load)
**with zero pressure at air inlet


Dorchester DR-CC water heater product brochure

Product brochures 7317 kb

Dorchester DR-CC water heater dimensions

Dimensions 105 kb

Dorchester DR-CC water heater data table

Data tables 82 kb

Dorchester DR-CC installation manual

Installers guides 7420 kb

Dorchester DR-CC water heater hydraulic schemes

Hydraulic schematics 126 kb

Dorchester DR-CC 160 front CAD

CAD 138 kb

Dorchester DR-CC 160 side CAD

CAD 100 kb

Dorchester DR-CC 160 top CAD

CAD 136 kb

Dorchester DR-CC 200 front CAD

CAD 140 kb

Dorchester DR-CC 200 side CAD

CAD 102 kb

Dorchester DR-CC 200 top CAD

CAD 135 kb

Dorchester DR-CC 245 front CAD

CAD 164 kb

Dorchester DR-CC 245 side CAD

CAD 122 kb

Dorchester DR-CC 245 top CAD

CAD 139 kb

Dorchester DR-CC 285 front CAD

CAD 171 kb

Dorchester DR-CC 285 side CAD

CAD 98 kb

Dorchester DR-CC 285 top CAD

CAD 141 kb

Dorchester DR-CC 380 front CAD

CAD 143 kb

Dorchester DR-CC 380 side CAD

CAD 112 kb

Dorchester DR-CC 380 top CAD

CAD 136 kb

Dorchester DR-CC water heater electrical connections

Wiring diagrams 107 kb

Ideal uses/applications

Optional extras

  • Unvented water supply kit - essential for any unvented application. Includes an expansion vessel sized for the water heater and local pipework only.
  • Room Sealed Flue Systems:
    • Concentric flue systems type C13–Horizontal termination.
    • Concentric flue systems type C33–Vertical termination.
    • Concentric flue systems type C43.
  • 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 of your water heater.
  • Book commissioning at the same time as placing your order for improved warranty terms.

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