Features & Benefits

• • 25kW model: The lower of the two combi outputs in the Greenstar 4000 range.
  
  
• • Range flow rates up to 12.3 l/min: Quoted at a 35 degrees C rise for the combi range as a whole, the 25kW being the lower output.
  
  
• • Full flow from 1 bar: Full flow rates available from 1 bar mains pressure.
  
  
• • Modulates down to 3kW: A 1:10 modulation range on central heating.
  
  
• • Quiet operation: 45dB(A) in use.
  
  
• • Full colour long text display: Intuitive control and clearer information.
  
  
• • 500ml condensate siphon: Larger siphon volume built into the appliance.
  
  
• • Front access to components: Faster servicing and fault finding.
  
  
• • Longer flue lengths: Up to 12m on 60/100 for greater siting freedom.
  
  
• • 100% planet friendly packaging: Recyclable packaging as standard.
  
  
• • Increased DHW efficiency: Improved hot water efficiency while reducing waste water.
  
  
• • Intelligent Filling System ready: Compatible with the Greenstar Intelligent Filling System.
  
  

Applications

• • Combi installations: Heating and hot water from one appliance, with no cylinder.
  
  
• • Standard hot water demand: The 25kW model sits below the 30kW in the range.
  
  
• • LPG properties: Specified where the property is supplied with LPG rather than mains gas.
  
  
• • Modest mains pressure: Full flow rates from 1 bar incoming pressure.
  
  
• • Solar compatible systems: Listed by Worcester Bosch as solar compatible.
  
  
• • Smart control upgrades: Compatible with Bosch EasyControl.
  
  

Installation Guidance

• • Clearances: 1134 x 410 x 910mm including the boiler dimensions, based on a 60/100 flue kit.
  
  
• • Maximum horizontal flue: 12000mm, based on installing a 60/100 flue kit.
  
  
• • Maximum vertical flue: 12000mm with 60/100, or 21000mm with 80/125.
  
  
• • Wall mounting jig: Supplied with the appliance as standard.
  
  
• • Filling options: A Keyless Filling Link, part 7 716 192 610, and a Filling Link, part 7 716 192 281, are available.
  
  
• • Manufacturer literature: Combi installation and operating manuals and a specification one pager are published by Worcester Bosch.
  
  

Compliance & Performance

• • ErP efficiency rating: A for space heating and A for hot water across the Greenstar 4000 combi range.
  
  
• • Dimensions: 724 x 400 x 310mm, height by width by depth.
  
  
• • Ingress protection rating: IPX4D.
  
  
• • Fuel: LPG, with natural gas produced as a separate model.
  
  
• • Boiler type: Combi, heating and hot water in one unit.
  
  
• • Guarantee: 7 years as standard, 8 years with any Greenstar System Filter, or 10 years with a filter plus a 150 pound payment for Excelerate members who are not Worcester Accredited Installers.