2 cents on heat pump setup

Hardware
1

Hi,

I wanted to ask you for your 2 cents on a possible setup, when our (Quat) heatpump is installed next month. This includes a Honeywell Lyric T6 thermostat.

My current central heating is 100% traditional gas powered. I used TRV’s (Thermostatic Radiator Valve) in the rooms, which are connected to HA. When one of the TRV’s asks for heat, the central heating is kicked on and only heats that particular room and potential other rooms that need heat. This results in only shorts burst of the central heating.

With the installation of the Quat and the Lyric, my “kick on” on the central heating, which basically is a Shelly with dry contacts, is removed and all heating by the Quat and the traditional central heating is regulated by centrally placed Lyric and the Quat brain.

I haven’t figured our how to “smart” heat only the rooms that need heat and heat them when needed, even when the room where the Lyric is located, doesn’t need heat.

Should I remove the TRV’s and install regular valves? Or is there another smart way to set this up.

Really appreciate any ideas and insights for this.

Thanks!

Martijn

2

With your current setup with TRVs, that Lyric doesn’t make a lot of sense. Just replace it with Shelly (or put Shelly in parallel with Lyric).

3

I understand what you say, I think. But the central heating can not be controlled by something else than the heat pump. So I have no control over it basically.

4

If Lyric has, you have as well. It’s just a relay.

5

That’s what I thought too, but Lyric is connected to the heat pump, not the central heating. And it is controlled through OpenTherm, not an on/off relay.

6

Post a scheme of your setup. I have no idea of your components like Open Therm, but to me Lyric looks like just a relay.

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