Ikon-t boiler & wiring of new digital timer/thermostat

[tahoku]

Untitled

• tahoku
• 3 Oct 2012
• 1

 

[ericmark]

Seems you have worked out there should be as supplied a link between the two TA terminals or some cable out of them with a link where cable terminates.

Clearly these would go to the volt free connections on the time switch/thermostat. With an independent supply to power the time switch/thermostat.

These boilers often don't have a thermostat but use the thermostatic radiator valves to control temperature.

I have had problems in the past where the boilers don't run 24/7 because of the lock shield valves not being set correctly.

But should be easy now.

 

[EFLImpudence]

The answer is on page 19 of the manual.

The two wires should be connected to terminals 1 and 4 of the thermostat.

You will also need to connect 240V L and N Plus Earth independent of the above.

 

[Agile]

These boilers often don't have a thermostat but use the thermostatic radiator valves to control temperature.

A room thermostat is required to be fitted to all UK boiler installations.

If all rads have TRVs ( as now also required! ) then an auto bypass valve ( ABV ) is needed.

The ABV ensures that a flow continues throught the boiler. If this does not happen then the boiler temperature control may not work and it could overheat!

Tony