What are Circuits
A single piece of Underfloor Heating pipe (or a circuit) can only be installed at a maximum length to ensure consistent temperature is maintained throughout the system. This length is determined by the diameter of the pipe and the number of circuits in the system.
In its simplest form, your small to average sized room can be heated using a single circuit of pipe and a single circuit pump to pump the water through the pipe. For larger rooms, multiple circuits can be combined, using a manifold, to provide the required heat output.
What are Zones?
Zones are single or multiple circuits of pipe in a room controlled by a thermostat.
Each circuit of pipe is connected to a port on a centralised manifold with the flow of water through each circuit being controlled by motorised valves (actuators). These actuators are controlled by a centralised wiring centre and are triggered to open or close by the thermostats located in each room.