The new Keston Heat range of frame and header kits are available, to facilitate up to 6 boilers in cascade. The new Keston Heat frame and header kits offer a simple system installation allowing for outputs from 90kW to 330kW


Small footprint

  • 560mm depth for all variants of the Keston Heat frame and header, with boilers in cascade
  • Height of all Frame and Header kits is 1945mm Low

Lift weight

  • Lift weights are as low as possible

Time saving

  • The flow and return and the low loss header, in the header kit, are pre insulated which improves efficiency and reduces heat loss, as well as reducing installation time


  • The Frame and Header Kit can be installed with either a Keston Sequencer (up to 5 boilers) offering direct modulation of the system, which reduces running costs
  • For installation of 6 boilers, two Keston sequencers are required

Flexibility of Siting

Flue system

  • The twin flue system allows awkward and difficult to site flue runs up to 21m* (please note each appliance will need a flue and air pipe assembly installed, there is no flue cascade)
  • Simple 50mm MuPVC solvent weld flue reduces time cost and labour
  • For increased flexibility of siting additional elbows and bends are available for both flue systems
  • Per 90 degree bend, Keston Heat boilers only require 1m reduction in equivalent flue length

Gas Pressure Test Point

  • Fitted to both ends of the gas header to allow left or right hand installation

* For maximum total equivalent flue length please refer refer to the installation instructions for full details