EricMark
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- Reaction score
- 96
Independent control it what it says is required for a new build house over a set area, I would think with TRV's fitted to every radiator that is independent control, and using electronic heads one can even include time, not expensive at £10 each head.
However the condensing boiler has a problem using return water as it's control, it can never turn completely off, it modulated down to minimum output then it starts to cycle, and unless a wall thermostat or you get some manual intervention it would continue to cycle all summer.
Although a off/on thermostat works to an extent, it can also result in the boiler not modulating correctly which costs money, so many boilers today have assess to the ebus and use modulating thermostats OpenTherm is a good example, although there are some manufacturers which use their own version.
So to comply with the legal requirement for independent control one would need two modulating thermostats one for each zone, however I can find out how you connect two modulating thermostats to the same boiler? There must be a way, a hub or something, but can't find it.
However the condensing boiler has a problem using return water as it's control, it can never turn completely off, it modulated down to minimum output then it starts to cycle, and unless a wall thermostat or you get some manual intervention it would continue to cycle all summer.
Although a off/on thermostat works to an extent, it can also result in the boiler not modulating correctly which costs money, so many boilers today have assess to the ebus and use modulating thermostats OpenTherm is a good example, although there are some manufacturers which use their own version.
So to comply with the legal requirement for independent control one would need two modulating thermostats one for each zone, however I can find out how you connect two modulating thermostats to the same boiler? There must be a way, a hub or something, but can't find it.