Ok
I am having to do this in a convoluted and far from best way for various reasons, but this is what I plan to do.
Background
House is about 2,500sq ft, 5 bed.
I rent it.
5 radiators have TRVs on them, 10 do not.
The thermostat is located over the hallway radiator (Don't get me started on that)
Originally the radiator system was unbalanced - i.e. a third of the house never got hot water and was very cold, while other areas were very hot - not fixed
Large kitchen and large sunroom are south facing and is completely ope plan - i.e. Sunroom gets very cold at night, making kitchen cold too and very hot (30C+) when sunny
Door between kitchen and hallway left open, (hallway radiator turned off (it was throwing thermostat out)), to ensure that thermostat responded to cold kitchen/sunroom
Every room has an Indigo Temp sensor in it ( Hue, Oregon)
Existing Heating control very simple mechanical timer, so Heating can be either available or unavailable in 15 min lumps, can't assign set point to time periods
House largely in thermal balance, with some exceptions of rooms overheating.
Next Steps
1. Install Secure Zwave Heating controller/wireless thermostat (£100)
Set existing Heating control to on 24 x7 and manage using zwave controller
Now can set time periods, Morning, Day, Evening, Night and can assign the heating SetPoint to the primary/secondary rooms we are occupying rather than just the hallway
This will ensure I can manage Home/Away SetPoint for house and assign variable temps to the specific rooms, i.e. in the evening ensure lounge hits 20C and Master Bedroom hits 19C turn off heating, turn back on again if it drops.
Downside will be in the rooms where the radiators don't have TRVs they will over heat
The Zwave controller can be removed when we leave the property restoring basic controller for heating
2. Fit TRVs to the remaining radiators (£200)
My theory is that I can recover the costs of this over one winter
This will stop rooms in the house from overheating, while Indigo ensures that the key rooms/time periods are at the right minimum temp
3. Fit zwave TRVs to most problem areas (£ hundreds)
Provide greater flexibility of control Home/Away
These will will be removable easily on vacating rental property
Given that 1. should be in place in days, 2. in weeks and three possibly months what is the best way to implement in Indigo
Each time period, Morning, Day, Evening and Night will have a different set point for primary and secondary zones.
What is peoples experience - what is the best way to implement that allows the planned changes and keeps it manageable ?
Any input much appreciated
Mike