Replacing a thermostat receiver and battery operated room thermostat

[dave11]

I want to change my old Honeywell HC60NG receiver and the room stat
HCW
80 as its working intermittently even after changing batteries. I don't want a fancy £300 job just a basic one that does the work this one has done for years.
It has 5 connections from one cable going in the back, is that correct or are some wires from the conduit underneath? What are the 2 wires not E,N or L and will it be straight forward to connect a newer receiver unit and room stat. I have looked at newer ones and they all seem to have only 4 connections? the new ones don't require an earth, but the diagrams are black and white and just want some advice please. Many thanks.

 

[ericmark]

There is another post about the same thing here may be worth looking at.

The Honeywell unit was designed for non modulating boilers, question one must be is your boiler non modulating i.e. not a condensing boiler?

Likely the Drayton Wiser would work well and allow latter increased control, but so would Tado, Hive, Evohome and many others, so it depends what you want.

Linking the two wires in red circle

put both in the same terminal will likely mean the boiler will run, but as to getting the home too hot, depends on if you have TRVs fitted and if they are set up. So need to tell us a little more about what you have.

 

[dave11]

Hi ericmark,

The boiler I have is a Valaint eco TEC plus, yes i do have TRVs fitted, this is a condensing boiler Iam sure.

 

[dave11]

Thanks, I have just seen the other post

 

[denso13]

I want to change my old Honeywell HC60NG receiver and the room stat
HCW
80 as its working intermittently even after changing batteries. I don't want a fancy £300 job just a basic one that does the work this one has done for years.
It has 5 connections from one cable going in the back, is that correct or are some wires from the conduit underneath? What are the 2 wires not E,N or L and will it be straight forward to connect a newer receiver unit and room stat. I have looked at newer ones and they all seem to have only 4 connections? the new ones don't require an earth, but the diagrams are black and white and just want some advice please. Many thanks.

Typical wiring therefore most will be easy to fit, Something like a Hive would do.

 

[dave11]

Hi Doogle, ta for the reply, i was jusr worried about those two wires, not E,N,or L

 

[denso13]

Hi Doogle, ta for the reply, i was jusr worried about those two wires, not E,N,or L

Just the heating on/off, perfectly normal.

 

[ericmark]

Using the one channel option the two wires in red circle go to 1 and 3, Hive and Wiser both use same back plate, so the difference is down to how the TRV heads work once you add them, I prefer the Wiser, but up to you, the wall thermostats on their own work the same, it is when adding electronic TRV heads when Wiser works better.

 

[CountryFan]

You could opt for Vaillant wireless or Glowworm (same company) that use ebus for better modulation or just on/off and vast majority will cover that.

 

[dave11]

ericmark thank you taking the time to post the drawings, much appreciated. Just one more thing, we never used to have a wall thermostat at all and when we moved here the TRVs were already fitted, we only had the room thermostat fitted on advice from the gas fitter when he serviced the boiler, took his advice, should I have left it as it was do you think?