Hi
I have a new installation of Evohome which I am having trouble getting to work consistently. The system is an oil fired boiler, with a ATP921R3100 Controller, a BDR91 Wireless Relay Box, a water cylinder kit and 12 HR924UKs. There are separate HW and heating motorised valves, all working fine.
There is no problem getting the boiler to fire as required, the issue is that the TRVs don't seem to do as I thought they should. At any time, there will be a couple of rooms where the target temperature is 20 degrees, but the reported room temp is 16.5 - yet the rads don't come on, so the room gets colder and colder. In another room the target will be 20 and the rad is on full blast, reporting a room temp of 22! Yesterday I had to remove the TRV top in the kitchen, open the valve up and warm up that way, as it showed no interest in coming on even when I applied an override to 6 degrees higher than measured temperature.
In a zone with two rads, one is coming on but the other isn't. Again, the valve bodies work fine ifs they are manually opened.
I'm frustrated that the Evohome system comes with a really good installation manual but nothing whatsoever to explain how the system works and how to configure it for some typical home scenarios. Why, for example, does the Eco/Boost override say it offers + or - 3 degrees, but when you use it there is nowhere to make that choice and it only actually gives you the Eco - effect? Why is there only one custom setting possible? It would cost Honeywell nothing to let you store various scenarios, instead of having to change one all the time.
Which room should I locate the controller in (does it matter?) - has it got a thermostat in it? In some places the documentation seems to suggest the controller has a master thermostat but there is no evidence to support that in the menus. Would I be better off in some rooms with a wall thermostat to control the zone TRVs rather than relying on the ones built into the TRVs?
How does the custom setting work? If you add some rooms to it, when you apply it does it leave the unselected rooms on default setting whilst applying the custom setting to the rooms you added to it? We are a b&b so I want to be able to easily turn the guest rooms off when the government locks us down, so do I keep the custom zone for 'guest bedrooms off'and when I apply that will it leave everything else with the normal setting?
And, most importantly, why does my heating not come on a room which is 5 degrees below the target when the rad in another room is blazing hot?!? At the moment when the house is cold it is a total ball ache to get it to warm up - compare that to my old dumb system where I just had to press a single button to get nice and toastie.
I'm sure the system can do what I need, I'm just struggling with the lack of configuration support from the manufacturer. Any guidance would be greatly appreciated!
Thanks
I have a new installation of Evohome which I am having trouble getting to work consistently. The system is an oil fired boiler, with a ATP921R3100 Controller, a BDR91 Wireless Relay Box, a water cylinder kit and 12 HR924UKs. There are separate HW and heating motorised valves, all working fine.
There is no problem getting the boiler to fire as required, the issue is that the TRVs don't seem to do as I thought they should. At any time, there will be a couple of rooms where the target temperature is 20 degrees, but the reported room temp is 16.5 - yet the rads don't come on, so the room gets colder and colder. In another room the target will be 20 and the rad is on full blast, reporting a room temp of 22! Yesterday I had to remove the TRV top in the kitchen, open the valve up and warm up that way, as it showed no interest in coming on even when I applied an override to 6 degrees higher than measured temperature.
In a zone with two rads, one is coming on but the other isn't. Again, the valve bodies work fine ifs they are manually opened.
I'm frustrated that the Evohome system comes with a really good installation manual but nothing whatsoever to explain how the system works and how to configure it for some typical home scenarios. Why, for example, does the Eco/Boost override say it offers + or - 3 degrees, but when you use it there is nowhere to make that choice and it only actually gives you the Eco - effect? Why is there only one custom setting possible? It would cost Honeywell nothing to let you store various scenarios, instead of having to change one all the time.
Which room should I locate the controller in (does it matter?) - has it got a thermostat in it? In some places the documentation seems to suggest the controller has a master thermostat but there is no evidence to support that in the menus. Would I be better off in some rooms with a wall thermostat to control the zone TRVs rather than relying on the ones built into the TRVs?
How does the custom setting work? If you add some rooms to it, when you apply it does it leave the unselected rooms on default setting whilst applying the custom setting to the rooms you added to it? We are a b&b so I want to be able to easily turn the guest rooms off when the government locks us down, so do I keep the custom zone for 'guest bedrooms off'and when I apply that will it leave everything else with the normal setting?
And, most importantly, why does my heating not come on a room which is 5 degrees below the target when the rad in another room is blazing hot?!? At the moment when the house is cold it is a total ball ache to get it to warm up - compare that to my old dumb system where I just had to press a single button to get nice and toastie.
I'm sure the system can do what I need, I'm just struggling with the lack of configuration support from the manufacturer. Any guidance would be greatly appreciated!
Thanks
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