NCB500 System Boiler

The NCB500 system boiler is a perfect upgrade for your current central heating and hot water solution. The compact design makes it easy to fit into any kitchen or airing cupboard, allowing you to maximise all space in your home.

System boilers allow homeowners to store large quantities of hot water for later use, ideal for use with multiple showers, radiators and taps when required. You can also enjoy peace of mind with a 10-year warranty on every installation.

The NCB500 System Boiler has an easy set-up process and is compatible with the latest Navien Smart Controls, giving you full control of your heating system which can help keep bills down.

  • Durable stainless steel heat exchangers
  • 3-zone ready w/ Smart Plus control pack
  • 10-Year Warranty
  • Easy commission set-up wizard
  • LPG Conversion Kit included
  • Compatible with Navien Multikit
  • Compact dimensions for easy installation in a kitchen cupboard

Technical Data

NCB500-15k NCB500-18k NCB500-24k NCB500-30k
Heat output Heat input range 15.5/2.7 18.6/3.2 24.7/4.3 31.0/4.6
Modulation (max/min) 6:1 6:1 6:1 7:1
Heat output range @ 80/60°C 15.0/2.6kW 18.0/3.1kW 24.0/4.2kW 30.0/4.5kW
Condensing heat output range @ 50/30°C 16.4/2.9kW 19.4/3.4kW 25.6/4.5kW 32.6/4.8kW
Full load efficiency at Max. output @ 50/30°C (Condensing) 105.9% 104.6% 106.5% 105.2%
Max. heating operation pressure 2.5 Bar
Max. heating temperature 90°C
Adjustable heating temperature range 40-90°C
Flue Flue Size Coaxial length Ø 60/100
Max. horizontal coaxial length ø60/100 8m
Max. vertical coaxial length Ø60/100 8m
Weight (Kg) 27 29 32
Dimensions 395 x 283 x 680mm
ErP Efficiency ErP A (93%)
ErP Efficiency with Smart Plus (x3) ErP A+ (98%)

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