DrXerox
Established Member
I have recently discovered z wave home automation and bought myself a Veralite and a plug/socket dimmer just to experiment with.
I would like to add some central heating control. I have a combi boiler with eight radiators some of which have mechanical trvs. Control at the moment is done by a Honeywell CM927 which is a 7 day battery operated wireless controller and boiler interlock, and is wall mounted in the hallway.
I would eventually like some zone cotrol. Perhaps a zone for each bedroom, one in the lounge (two rads), one in the kitchen and one in the hall. This could be achieved with something like the StellaZ trv.
Here is where I need some advice.
I could replace the CM927 with a Secure SCS318 and boiler relay to start with, which is a direct equivalent, but z wave enabled. Wife friendly, as time/temp changes can be done from its panel. Then add z wave trvs as I go along.
But, when the hallway is warm enough the boiler will cycle down so any trv radiator won't get heat no matter what it's temperature.
Or I could do away with the programmer and just use z wave trvs and use the Veralite as the programmer. Not wife friendly ahough an iPad app will come into play. But this does away with the boiler interlock. (not recommended)
Or I could replace the CM927 with a Secure SRT322 thermostat and boiler relay, in which case the Veralite would do the programming. Not wife friendly either!
I can't work out the conflict of using trvs (and lots of zone control) with not having a boiler interlock.
Any advice will be greatly appreciated.
I would like to add some central heating control. I have a combi boiler with eight radiators some of which have mechanical trvs. Control at the moment is done by a Honeywell CM927 which is a 7 day battery operated wireless controller and boiler interlock, and is wall mounted in the hallway.
I would eventually like some zone cotrol. Perhaps a zone for each bedroom, one in the lounge (two rads), one in the kitchen and one in the hall. This could be achieved with something like the StellaZ trv.
Here is where I need some advice.
I could replace the CM927 with a Secure SCS318 and boiler relay to start with, which is a direct equivalent, but z wave enabled. Wife friendly, as time/temp changes can be done from its panel. Then add z wave trvs as I go along.
But, when the hallway is warm enough the boiler will cycle down so any trv radiator won't get heat no matter what it's temperature.
Or I could do away with the programmer and just use z wave trvs and use the Veralite as the programmer. Not wife friendly ahough an iPad app will come into play. But this does away with the boiler interlock. (not recommended)
Or I could replace the CM927 with a Secure SRT322 thermostat and boiler relay, in which case the Veralite would do the programming. Not wife friendly either!
I can't work out the conflict of using trvs (and lots of zone control) with not having a boiler interlock.
Any advice will be greatly appreciated.