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+--- Thread: Combi Boiler switching (/thread-1977.html)
- waynebr - 08-30-2010
Hoi may be a stupid question, I am going to be having a comfort system installed soon, I would like to have my central heating also within my home automation, I currently have a C-Bus system in place and know that my boiler needs a volt free thermostat.
I have looked at the c-bus option and a thermostat is ã100 aprox which i fine but the volt free relay is almost ã400.
My question is can the same job be done with the C-bus thermostat & the RLY01 from Comfort? as this would make italot more affordable.Or can anyone suggest a more affordable option.
Thanks
- admin - 08-31-2010
What is the specifications of the volt - free relay that is needed, ie coil voltage andn contact rating?
How does the Cbus thermostat connect to the volt free relay?
- waynebr - 08-31-2010
hi all the boiler manual says is to use a volt free thermostat, it is a two wire type, the c-bus and comfort would be connected using ucm cbus
- admin - 09-01-2010
You can probably use the RLY01, if the Cbus Thermostat can drive the RLY01. The RLY01 requires a 12V output to turn on the relay, so if the Cbus thermostat is able to supply that then it should work
- palmlodge - 09-01-2010
I use this, but CBUS takes care of the voltage free switching. Comfort controls the logic.
I also installed a 2 way switch, so I can manually switch between CBUS control and the old central heating timer (for testing).
Fairly simple - as my old central heating timer had all the info I needed.