The Smallhythe Project
Update to fully pressurised, new high efficiency boilers and add heating controls.
We were asked to come up with a solution for a grand old house with an antiquated plumbing and heating system.
The existing heating system was all on one zone including 3 floors of radiators and several underfloor heating loops, It had no real control other than on or off and some areas were struggling to heat.
The first thing to do was to split up the heating system into upstairs and downstairs heating zones along with the underfloor zones, each zone had a thermostat and zone valve installed to control the heat, two new grant vortex blue flame boilers were installed along with Grundfos pumps, Honeywell controls and a custom copper low loss header. The next task was to remove the water tanks in the loft and the old low pressure (gravity) hot water cylinder in the airing cupboard.
We then installed two mains boost 450 accumulators in the boiler room along with a water softener and a 450 litre joule unvented hot water cylinder with a secondary return loop for instant hot water at the taps.
The system now runs on 3.5 bar and is capable of running 4 x showers simultaneously without suffering pressure drop..
we installed a hot and cold manifold with lever shut off valves to close down individual sections of the system. This was done to facilitate the isolation of individual bathrooms etc without disrupting the others.
We also installed a sump pump with a 35mm copper discharge pipe for protection against flooding.