I have a 180l flowmax thermal store, water heated by my boiler circulated by pump local to tank and returned to storage.
This store water is used to heat radiators when ch selected circulated via a second pump. I have mains pressure hot water via an internal coil in the
thermal store and blender valve, open vented system.
So to have ch on I need to have hw on as the hw selection heats the thermal store water which when ch selected warms the rads.
I've had a Hive thermostat installed with hw and ch modes all coming on and off as per schedule etc.
My old programmer wouldn't allow me to programme ch if hw wasn't programmed to be on at same time. If I clicked boost or advance on the ch it would automatically kick the hw mode in too.
The Hive I had fitted doesn't appear to do this, if the hw is off and I now turn ch on the ch circ pump runs but without the hw on I will eventually just end up circulating cold water?
I have obviously programmed the hw to be on longer than the ch so it only ever comes on when the hw is active so not really a problem but as the thermostat has a default frost protection setting that can't be overridden if that was to be reached during the night the ch pump would run, again circulating cold water?
I know the default setting is 7c and in reality if the house was going to ever get that cold I would have left hw and ch on but does this sound like it's been wired correctly?
Maybe the hive doesn't allow this type of control so the only way is to programme the hw to always be on longer than the ch programme, as I have?
Hope that long winded explanation makes sense
This store water is used to heat radiators when ch selected circulated via a second pump. I have mains pressure hot water via an internal coil in the
thermal store and blender valve, open vented system.
So to have ch on I need to have hw on as the hw selection heats the thermal store water which when ch selected warms the rads.
I've had a Hive thermostat installed with hw and ch modes all coming on and off as per schedule etc.
My old programmer wouldn't allow me to programme ch if hw wasn't programmed to be on at same time. If I clicked boost or advance on the ch it would automatically kick the hw mode in too.
The Hive I had fitted doesn't appear to do this, if the hw is off and I now turn ch on the ch circ pump runs but without the hw on I will eventually just end up circulating cold water?
I have obviously programmed the hw to be on longer than the ch so it only ever comes on when the hw is active so not really a problem but as the thermostat has a default frost protection setting that can't be overridden if that was to be reached during the night the ch pump would run, again circulating cold water?
I know the default setting is 7c and in reality if the house was going to ever get that cold I would have left hw and ch on but does this sound like it's been wired correctly?
Maybe the hive doesn't allow this type of control so the only way is to programme the hw to always be on longer than the ch programme, as I have?
Hope that long winded explanation makes sense