St Mary the Virgin Church, Calne

The Victorian heating system in this beautiful 15th Century, Grade 1 listed building failed a few years ago, so funds were raised for replacement. Acting as main contractor, we have taken the project right from design, through to its completion. Even before its failure, the existing system had not been performing efficiently. It has therefore been completely stripped out and replaced by twenty Kampmann Katherm trench heaters located within existing floor ducts, whilst still retaining the decorative grilles above. Additional heat emission is from Zehnder 'Radiavector' and Stelrad 'Planar' radiators and pipe coils, located around the Church.

The system is served by two Broag 'Quinta' Pro 95 condensing boilers located in the basement Boiler Room. Overall control of the system is via a Trend Building Management System and the system is zoned to provide flexible use of space. The installation has been carried out with no hot works, so copper 'Pressfit' joints have been used, with screwed joints in steel pipework. The system is a 'sealed' type, with a Mikrofill EFD automatic top up unit. It has been designed to produce an internal temperarure of 16degC with an external ambient temperature of -1degC. Higher temperatures are achievable, but stability at this temperature is a requirement for the optimum performance of the Church's rare 1908 pipe organ.


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