Underfloor Heating From Radiator Circuit

These systems are fully pumped meaning that the circulation of water in the central heating circuit is pumped.

Underfloor heating from radiator circuit.

For all rooms greater than 15m2 you need separate primary flow and return pipes from the boiler or you can tee off the main central heating pipes before the first radiator. If you really want ufh throughout you should give serious consideration to having a wet system installed. This page however refers to hydronic heating with radiators as the principle heat emitters. Teeing off your radiator pipes this means that when your existing radiators are programmed to come on usually be your time clock next to the boiler the underfloor heating pump will also come on providing that both your radiator thermostat and your underfloor heating thermostat are calling for heat please note the underfloor heating pump will not run until the water temperature in the pipes has.

As you can probably imagine using electric underfloor heating throughout the house is not all that energy efficient. You could even save money on your energy bills as ufh is up to 25 more efficient than radiators. Our promise to you we ll price match on like for like products. I am temporarily going to connect my ufh manifold to my current radiator circuit by tee ing off my main flow and return.

Underfloor heating can also be a hydronic heating system. Now i know when installing correctly to combi boiler this will need 2 zone valves and wiring centre etc. Meanwhile the hot water from the boiler goes directly to the radiator system and hot water cylinder. You ll ideally go the s plan route and use two port valves to ensure boiler interlock and control one for the rad circuit and one for the ufh circuit but this is no different to using s plan to control one radiator heating circuit and domestic hot water dhw some planning will need to take place on how you time control the system so if you are using simple rotary dial thermostats for the rads and underfloor then a two channel timer will be needed or a three channel to also control dhw.

Click here for more information on central heating system controls. The underfloor heating system uses its own feed from the boiler with a blending valve and pump fitted at the manifold to lower the water temperature entering the underfloor heating system. If the ufh system is connected to the radiators it can t be controlled individually. It can be expensive to heat a whole house using electric underfloor heating so having radiators in the larger rooms is the way to go if you opt for dry ufh.