Difference between revisions of "High-Efficiency Combination Boilers"

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Revision as of 23:30, 3 February 2016




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Description

A combi boiler is a high efficiency boiler and heater, contained within a compact unit and does not include a water tank.

Advantages
  • Space saving
  • Reliable design
  • High energy efficiency
Disadvantages
  • Certain conditions may result in low water pressure
Application barriers
Information sources

Source Source Source

Image
Trade:


Fuel

Gas

Operating Efficiency

91.1%

Annual Degradation Rate in Efficiency

<9%

Heat Output Central Heating

30 kW

Heat Output DHW

39 kW

Dimensions

86x72 inches, 181x72 inches

Weight

330-840 kg

Maximum DHW Flow Rate

37 kW

Maximum DHW Flow Rate Required

3 kW

Minimum Operating DHW Pressure Required

30-150 psi

Mechanical and Hydraulic Connections

Boiler feedwater pump, Boiler connection kit

CH Flow/Return Pipe Size

10.2-139.7

DHW Flow/Inlet/PRV Size

20-50 mm

Noise Level

45 dB

CO Emissions Maximum

40mn/m3

NOX Emissions Maximum

0,02ppm

Investment Cost

£500 - £2,500 in UK

Operational Cost

£666 Average Bill

Replacement Cost

£500 - £2,500 in UK

Life Expectancy

5 years (taken as warranty)


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Boiler 4