Combi Boiler Room Thermostat

This is called a single channel programmer.

Combi boiler room thermostat.

Trvs are those nozzles located on the bottom of radiators usually with numbers 1 5 and an asterisk on them. This is the same operation as the volt free system except in this case line voltage is applied to the controls and boiler. Water is heated in a special chamber of the boiler which is usually powered by gas or fuel oil and is then distributed to different rooms of the home via radiators or other heat distribution systems installed. A room thermostat preferably a timed or programmable one.

You can find out more about combination boilers and the best brands on our dedicated combi boilers page. When heat is required the thermostat connects these two wires together applying the full mains voltage to the switched line terminal. The boiler only operates if both the programmer and thermostat are on. They work by automatically sensing the air temperature and when the temperature falls to a pre determined setting the thermostat will tell the heating to turn on.

While your boiler thermostat and room thermostat are ways to control the temperature of your entire home and hot water thermostatic radiator valves trvs allow you to manage the temperature of individual rooms. The location of the thermostat is very important as the following examples show. Traditionally the thermostat is connected to the boiler by wires running through the walls of the home. This activates the boiler.

If the thermostat is also activated the sl terminal on the boiler is connected to line and the boiler operates. The table below shows a selection of standard and smart programmable thermostats from honeywell baxi ideal nest tado and drayon. A boiler interlock motorised valves. We have a great range of wireless thermostats available that make it easier to control your heating remotely.

A 2 wire thermostat is connected between line and the switched line terminal on the boiler. It is often located somewhere neutral like the hallway but it can often be in the main living room of the house where occupants spend most of their time. Thermostatic radiator valves in all rooms except the one with the room thermostat.