Features & Benefits

• • 30kW output: The higher of the two combi outputs, giving headroom for hot water demand.
  
  
• • Flow rate up to 12.3 l/min: Measured at a 35 degree rise, for responsive hot water at the tap.
  
  
• • A-rated efficiency: Optimum energy efficiency and reduced running costs for the householder.
  
  
• • Full colour text display: Clear monitoring and control, and a simpler handover to the homeowner.
  
  
• • Quiet in operation: Powerful heating without the noise, useful where the boiler sits near living space.
  
  
• • SimpleSwitch compatibility: Shares screw positions, pipework, PRV, siphon and flue with the Greenstar i, i Junior and Si.
  
  
• • Pre-piping jig: The wall-frame allows all pipe connections to be run before the boiler is hung.
  
  
• • Rear piping as standard: No additional spacer frame is required to gain rear pipe access.
  
  
• • QuickTap: Briefly opening and closing the hot tap draws hot water through, of interest to metered customers.
  
  
• • Up to 10 year guarantee: Available when installed by a Worcester Accredited Installer, terms and conditions apply.
  
  

Applications

• • Small to medium homes: Specified for properties with one bathroom and standard hot water demand.
  
  
• • Combi replacement: A direct swap where a combi is already installed and no cylinder is present.
  
  
• • Greenstar i, i Junior and Si replacement: SimpleSwitch reuses existing fixing and pipe positions to cut time on site.
  
  
• • Properties without loft tanks: No cold water storage or hot water cylinder needed, freeing up space.
  
  
• • Smart control upgrades: Works with Bosch EasyControl, Comfort+ I RF and Comfort+ II RF via the RF key receiver.
  
  
• • Intelligent Filling System: The combi variant monitors pressure, prevents overfilling and flags sudden pressure loss.
  
  

Installation Guidance

• • Clearances above and below: 170mm above with a 60/100 flue or 210mm with 80/125, and 186mm below.
  
  
• • Side and front clearances: 5mm to each side, 450mm or 600mm to the front, or 20mm to a removable door.
  
  
• • Pre-piping: Run all connections, including condensate and PRV, on the wall-frame before hanging the boiler.
  
  
• • Flue ordered separately: This SKU excludes the flue, so specify the correct kit for the route and termination.
  
  
• • Servicing access: The front cover releases with two screws and the right-hand side panel is also removable.
  
  
• • Guarantee registration: Register the appliance after commissioning to secure the applicable guarantee period.
  
  
• • Gas Safe requirement: Installation and commissioning must be carried out by a Gas Safe registered engineer.
  
  

Compliance & Performance

• • Energy efficiency: A-rated for both heating and hot water.
  
  
• • Dimensions: 724mm high by 400mm wide by 310mm deep, sized to fit a standard kitchen cupboard.
  
  
• • Fuel: Natural gas, with an LPG variant produced separately under its own manufacturer code.
  
  
• • Manufacturer reference: 7 733 600 373, the 30kW combi natural gas model.
  
  
• • System protection: Guarantee terms are linked to annual servicing and a Greenstar System Filter being fitted.