Individual heat pump with underfloor (more than one manifold)

Due to the pressure and flow requirements of the underfloor circuits each individual manifold should have a small circulating pump. The integral heating distribution pump in the heat pump circulates water around a shunt loop (ring main). Each underfloor manifold pump then draws water as required from the shunt loop.

Buffer tanks are not required if 25% of the underfloor zones are left hydraulically open. These open zones are generally areas such as halls and bathrooms.

Thermal mixing valves should be removed from the underfloor manifold if fitted.

Kensa would always recommend fitting an expansion vessel on the heating distribution circuit.

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