Willis heating requirements

[bissoejosh]

Currently have a 300 litre UVC ready for a heat pump to handle hot water + heating at a later stage but in the meantime like several others on the forum I would like to add a Willis heater between the manifold flow/return to run our UFH system.

 

System is 3 x 100m loops all to be run as one zone in a 100mm screed. Wunda manifold is installed minus a pump at this stage. Wiring wise 3 core + earth from the stat is in place and power can be added from the plant room board easily.

 

I would like to finalise and order the necessary components so if someone could advise if I've missed anything it would be greatly appreciated...

 

Wilo manifold Pump from Wunda + Isolators

Digital room thermostat (recommendations?)

Willis jacket + immersion

Timing Switch to ensure E7 use

 

Electricians will fit all wiring and controllers but I supply everything.

 

Possibly a 2 port valve as per @Nickfromwales recommendation in this thread but not sure if this is necessary?

 

Trying to keep it as simple as possible at this stage.

Edited November 5, 2019 by bissoejosh