Stratton mk2 stainless steel wall hung boiler.
Wall hung condensing commercial boiler with a stainless steel heat exchanger.

Available in 7 models with outputs (at 50/30°C) of 43, 61, 76, 87, 105, 129 and 146kW. 

New 146kW model now available.


  • A wide range of outputs enables you to specify the best wall hung boiler model for your commercial heating system

  • Accurate load matching with a high turndown ratio and fully modulating performance

  • Manufactured in corrosion resistant stainless steel for a long life, backed up by a 5-year heat exchanger warranty

  • Integrated sequence control for multiple boilers using Master/Slave principle

  • Low height - less than 2.2 metres to top of flue header when mounted on low height pipe kit. 

  • Space saving flue arrangement above the boiler thanks to a concentric flue connector and integral flue gas non return valve

  • All models meet the strict energy saving criteria for the Government’s Energy Technology List (ETL), providing significant financial advantages for purchasers through the Enhanced Capital Allowances (ECA) scheme

  • Quick and easy to install with optional pipe kits for up to 4 boilers and wall mounting plate for individual boilers

  • Simple to move and store due to lightweight heat exchanger, and flat base of unit reduces risk of damaging connections.

  • Suitable for use with room sealed or open flue systems giving you greater flexibility in siting the boilers.

  • Simple to maintain using quick release internal water and gas couplings

  • A commercial boiler designed for sealed systems only for greater efficiency.

  • Low output models in the range for smaller applications.

  • Buy in confidence from a UK manufacturer with decades of commercial heating and hot water expertise.

  • Extensive back up and support from our team of experienced engineers across the UK.

  • Long term commitment to boiler spare parts.

Get in touch to find out more about the benefits of this new and improved stainless steel wall hung boiler range.
  Title Type Size  
Stratton mk2 brochure Stratton mk2 brochure Product brochures 5197 kB Download
Stratton mk2 dimensions Stratton mk2 dimensions Dimensions 357 kB Download
Stratton mk2 technical data table Stratton mk2 technical data table Data tables 89 kB Download
Navistem B3000 instruction manual Navistem B3000 instruction manual Installers guides 1171 kB Download
Stratton mk2 accessories AGU2-550 installation manual Stratton mk2 accessories AGU2-550 installation manual Installers guides 442 kB Download
Stratton mk2 installation manual Stratton mk2 installation manual Installers guides 4364 kB Download
Stratton mk2 pipe kit instructions manual Stratton mk2 pipe kit instructions manual Installers guides 1921 kB Download
Stratton mk2 seasonal efficiency Stratton mk2 seasonal efficiency Seasonal efficiency sheets 71 kB Download
Stratton mk2 scheme 1 sealed system with low loss header Stratton mk2 scheme 1 sealed system with low loss header Hydraulic schematics 295 kB Download
Stratton mk2 scheme 2 sealed primary, open vented second, plate heat exchanger Stratton mk2 scheme 2 sealed primary, open vented second, plate heat exchanger Hydraulic schematics 275 kB Download
Stratton mk2 - Single boiler pipe kit CAD Stratton mk2 - Single boiler pipe kit CAD CAD 213 kB Download
Stratton mk2 S2-40 - pipe kit frame 1 boiler CAD Stratton mk2 S2-40 - pipe kit frame 1 boiler CAD CAD 381 kB Download
Stratton mk2 S2-40 - pipe kit frame 2 boilers CAD Stratton mk2 S2-40 - pipe kit frame 2 boilers CAD CAD 539 kB Download
Stratton mk2 S2-40 single boiler CAD Stratton mk2 S2-40 single boiler CAD CAD 143 kB Download
Stratton mk2 S2-60 - pipe kit frame 1 boiler CAD Stratton mk2 S2-60 - pipe kit frame 1 boiler CAD CAD 379 kB Download
Stratton mk2 S2-60 - pipe kit frame 2 boilers CAD Stratton mk2 S2-60 - pipe kit frame 2 boilers CAD CAD 534 kB Download
Stratton mk2 S2-60 single boiler CAD Stratton mk2 S2-60 single boiler CAD CAD 142 kB Download
Stratton mk2 S2-70 - pipe kit frame 1 boiler CAD Stratton mk2 S2-70 - pipe kit frame 1 boiler CAD CAD 380 kB Download
Stratton mk2 S2-70 - pipe kit frame 2 boilers CAD Stratton mk2 S2-70 - pipe kit frame 2 boilers CAD CAD 506 kB Download
Stratton mk2 S2-70 single boiler CAD Stratton mk2 S2-70 single boiler CAD CAD 143 kB Download
Stratton mk2 S2-80 - pipe kit frame 1 boiler CAD Stratton mk2 S2-80 - pipe kit frame 1 boiler CAD CAD 368 kB Download
Stratton mk2 S2-80 - pipe kit frame 2 boilers CAD Stratton mk2 S2-80 - pipe kit frame 2 boilers CAD CAD 506 kB Download
Stratton mk2 S2-80 single boiler CAD Stratton mk2 S2-80 single boiler CAD CAD 142 kB Download
Stratton mk2 S2-100 - pipe kit frame 1 boiler CAD Stratton mk2 S2-100 - pipe kit frame 1 boiler CAD CAD 365 kB Download
Stratton mk2 S2-100 - pipe kit frame 2 boilers CAD Stratton mk2 S2-100 - pipe kit frame 2 boilers CAD CAD 502 kB Download
Stratton mk2 S2-100 single boiler CAD Stratton mk2 S2-100 single boiler CAD CAD 142 kB Download
Stratton mk2 S2-120 - pipe kit frame 1 boiler CAD Stratton mk2 S2-120 - pipe kit frame 1 boiler CAD CAD 363 kB Download
Stratton mk2 S2-120 - pipe kit frame 2 boilers CAD Stratton mk2 S2-120 - pipe kit frame 2 boilers CAD CAD 498 kB Download
Stratton mk2 S2-120 single boiler CAD Stratton mk2 S2-120 single boiler CAD CAD 140 kB Download
Stratton mk2 S2-150 - pipe kit frame 1 boiler CAD Stratton mk2 S2-150 - pipe kit frame 1 boiler CAD CAD 371 kB Download
Stratton mk2 S2-150 - pipe kit frame 2 boilers CAD Stratton mk2 S2-150 - pipe kit frame 2 boilers CAD CAD 490 kB Download
Stratton mk2 S2-150 single boiler CAD Stratton mk2 S2-150 single boiler CAD CAD 142 kB Download
Stratton mk2 SAP rating Stratton mk2 SAP rating SAP rating 45 kB Download
  • New build and retrofit projects.

  • Smaller commercial and public buildings including community schools, care homes, hotels, churches and retail units.

  • Small industrial and manufacturing premises.
Optional extras
  • A large range of off the shelf flue options available 
  • Room sealed and open flue solutions
  • Choice of pipe kits with low loss header
  • Support frame kit
  • Flue header kits

Single Boiler Controls
  • Outside air temperature sensor QAC34 (Part no. 533901457)
  • Domestic Hot Water sensor kit (sensor and pocket) (Part no. 563605674)
  • Mixing valve heating circuit control kit (clip in control module, temperature sensor and pocket) for 1 zone (Part no. 059753) – Maximum 2 kits per boiler
  • Programmable room sensor QAA75 (Part no. 533901587)
  • Offset adjustable room sensor QAA55 (Part no. 533901589)

Multiple Boiler Controls
  • Outside air temperature sensor QAC34 (Part no. 533901457)
  • Heating circuit sensor kit (sensor and pocket) QAZ36 (Part no. 563605609)
  • Merley boiler sequence controller, wall mounted (Part no. 563605672)
  • Merley boiler sequence controller, loose kit for panel mounting (Part no. 563605671)
  • LPB Bus communication module OCI345, one required per boiler module (Part no. 563605667)
  • Programmable room sensor QAA75 (Part no. 533901587)
  • Offset adjustable room sensor QAA55 (Part no. 533901589)

  • Choose from a wide range of service contracts to help maintain optimum performance. 
  • Book commissioning at the same time as placing your order for improved warranty terms.