Smart thermostat without boiler

Lorenzo94

Good evening all. I have just purchased a flat (new build) and the hot water and heating are supplied by the communal pump (hence I do not have a boiler or a tank in my flat). My current thermostat is a DANFOSS TP500 Si Range, and it’s very useless (and hard to use).
Anyone can advise on what smart thermostat may be compatible with the system I have? I have asked HIVE, but they said that having a boiler is imperative in order to get the system.

FaceHead

Put smart thermostatics valves on the radiators - a bit of a premium option, depending on how many radiators you have.

MWT

What you have is a simple day/time programmable thermostat.

It is basic but still pretty flexible, but if you want more then look at the Tado range, they have options for central/district heating systems...

matelodave

A thermostat sits across a couple of contacts and either opens or closes them to make the boiler turn on, and run the pump. In your case the stat will operate in the same manner but probably operate a motorised valve to control the water flow to your heating so even a Hive will do the same.  However it will cost you lots more more money than your Danfoss and probably wont do a much better job. There are are only 2-3 three wires to connect what ever sort of thermostat you use (plus possibly two for the power supply) it's not difficult to replace it with something else

IMO your best bet is to read the instructions for the one you've got and programme it to suit your lifestyle and save the silly amount of money that a Hive or TADO will cost https://assets.danfoss.com/documents/52489/BC031786406919en-010101.pdf

Lorenzo94

The main problem with the Danfoss is that is programmable in weekdays and weekend only, and working shifts that is not ideal with me. Tbf I wouldn't want to be spending loads of time setting up the thermostat every week according to my shifts. So I believe that a smart thermostat is the best option. I have booked an installation with the HIVE engineers, and if they cannot install it I will simply put Tado.

Talldave

Check Honeywell, I'm sure they do 7 day thermostats with optimum start.

matelodave

ok, I can see the point of having a lot more flexibility if you are on shift work as it would be a bit of a faff to keep reprogramming a normal stat as they are just geared around a normal seven day week whereas something with a remote function would allow you to control the heating  whilst you are not there but you'd still have the problem of only being able to programme over a seven day cycle. You could have fun every Sunday night setting up the next week unless you could set up a geo function which turned it on when you were there and off or down when your aren't and possibly turn it down during the day (or nights) when you are home but sleeping.

However, I guess it would still take a hell of a long time to save enough money for a Hive/Tado etc to pay for themselves.