Hello everyone, I am new here. I am about to have Evohome installed when the plumber replaces my radiators at home. I have a combi boiler and was therefore thinking of ordering the Evohome controller, a BDR91 to switch the boiler on/off, and an HR92 for each radiator in the house.
My plumber has not installed an Evohome system before and told me that it is good practice to leave a single radiator in the house (usually the one closest to the boiler) without a TRV, ie. in my case without an HR92. He indicated this was because if the combi boiler produces heat but all the radiators are turned off, the heat has nowhere to go, the boiler overheats and the system can get damaged.
That's all well and good but I have to say that I thought with an Evohome system, I'd be able to have an HR92 on each radiator, and that in case no heat is required by any of the radiators, the BDR91 in the system would switch off the heat production of the boiler and the problem described by my plumber would not happen?
Any thoughts you may have on this would be most appreciated.
Thanks
Johnny
My plumber has not installed an Evohome system before and told me that it is good practice to leave a single radiator in the house (usually the one closest to the boiler) without a TRV, ie. in my case without an HR92. He indicated this was because if the combi boiler produces heat but all the radiators are turned off, the heat has nowhere to go, the boiler overheats and the system can get damaged.
That's all well and good but I have to say that I thought with an Evohome system, I'd be able to have an HR92 on each radiator, and that in case no heat is required by any of the radiators, the BDR91 in the system would switch off the heat production of the boiler and the problem described by my plumber would not happen?
Any thoughts you may have on this would be most appreciated.
Thanks
Johnny
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