Single Zone underfloor heating manifold details

Single Zone using the Combimix

In certain situations you can have a large single area governed by one thermostat and one manifold.  In this situation it is not necessary to have every zone on the manifold governed by an individual thermal actuator nor is it necessary to have a wiring centre above the manifold.

The solution is straightforward, by using a 2 port motorised valve on the incoming flow to the manifold.  The valve provides mechanical on/off control of the flow to all the UFH circuits.  The valve is directly operated by the thermostat governing this area (usually a clock thermostat).  The clock thermostat also directly controls the pump on the manifold.  The demand signal for the boiler and boiler pump are taken from the auxiliary end switches.  The electrician should fit a small surface mounted joint box above the manifold.  This can then be used to make the connections detailed on the following page.

As the manifold does not have individual actuators, the white plastic manual wheels are simply left on the top manifold block and left open.  The individual flow rates are set in the normal fashion using the adjustable flow meter valves.

This set up can be used as a stand-alone system or integrated with other multi zone manifold sets.