Baxi 600 System LPG Boiler

Baxi 600 System LPG

Installed with an unvented cylinder on a fully pumped sealed system, it is perfect for larger properties with several bathrooms or those with a high demand for hot water.

  • Features
  • Dimensions
Baxi 600 Heat


  • Outputs: 24kW
  • 7 Year warranty*
  • Compact cupboard fit
  • Pipes behind facility within boiler casing
  • Lightweight 28.1kg lift weight
  • Fully modulating and highly efficient
  • Ease of service
  • Front access to all components
  • Brass hydraulics block
  • Central top flue
  • Extensive flue options up to 20 metres
Baxi 100 Combi


  • Boiler width [A] = 390mm
  • Boiler height [B] = 700mm
  • Boiler depth [C] = 285mm
  • Side clearance [D] = 5mm*
  • Upper clearance [E] = 178mm*
  • Lower clearance [F] = 200mm*
  • Front clearance [G] = 5mm* in operation, (* 450mm for servicing purposes)

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For operation and maintenance advice, download the user guide.

Baxi 600 System User Guide

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Installer Information

  • Technical Features
  • Technical Data Table
  • Technical Literature
  • Product Training
  • Outputs: 24kW LPG model to suit most property sizes
  • Compact cupboard fit means it can be installed discreetly
  • Lightweight 28kg lift weight
  • Front access to all components saves time when servicing, allowing for ease of maintenance and repair

Baxi 600 System LPG 24 System LPG
Sales Code

Boiler only


Controls and accessories

Concealed user controls   No
Operating mode selector switch with reset    Yes
User adjustable DHW temperature  Range - 35°C to 60°C Yes
User adjustable CH temperature   Range - 25°C to 80°C Yes
Temp/status/fault diagnosis display    LCD display
Wired outdoor weather sensor & relay kit (7683087)   Optional  
Baxi wired room thermostat (720971601)   Optional 
Baxi twin channel wired programmer (7212443)   Optional
Multifit rear pipework kit (7682790)   Optional
Pre-plumb jig (7682545)   Optional 
ErP Product Information 
Seasonal Space Heating Energy Efficiency % 93
NOx mg/kWh 28.0
Sound Power Level, Indoors  LWA dB 51
Space Heating Efficiency Class    A
Heat Input CH kW (Max) gross (QnHs) 27.4
kW (Min) gross (QnHs)  5.2
Heat Output CH (non condensing) factory setting kW (Max) (Pn) 24
kW (Min) (Pn) 4.5
Heat Output CH (condensing) factory setting kW (Max) (Pnc) 25.8
kW (Min) (Pnc) 4.9
Gas supply connection (mm)  22
Inlet supply pressure (LPG)  mbar (nominal)  37
Maximum Gas Rate m3/hr   4.95
SAP 2009 annual efficiency (PCDB/SEDBUK) % 89
NOx class     6
Mechanical and hydraulic  
Heat input central heating (CH)  kW max gross (QnwHs)  27.4 
Safety discharge pressure bar  3
Compartment ventilation required   No 
Flow / return pipe size (mm)  22
Temporary filling loop supplied    No
Integral expansion vessel  Size (litres)  7
CH system inhibitor required    Yes
Condensate discharge pipe size  (mm)  21.5 
Electrical supply   Volts / Hz  230V/50Hz
Permanent live required     Yes
Electrical cable required core  3 x 0.75
Power consumption when firing Watts  100
External fuse rating Amps 
Internal fuse rating - connection board Amps  2HA250V
Internal fuse rating - Main PCB board  Amps 1.6
Boiler IP rating (electrical protection) without integral timer fitted Approval Category   IPX5D 
Circulating pump exercise feature   Yes
Pump overrun     Yes
Integral 'boiler only' frost thermostat    Yes
Concentric flue system 
Standard telescopic concentric flue Length in mm 315-500
Horizontal and Vertical concentric (60/100 mm)  Max equivalent length (m)  10
Reduction per 135° bend (m)  0.5
Reduction per 93° bend (m) 
Horizontal and Vertical concentric (80/125mm)  Max equivalent length (m) 20
Installer lift weight (boiler) Max (kg)  28.1
Gross packaged boiler weight  (kg)  30.6



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