Tag Archives: gas heating system

map of nest thermostat location relative to gas heating system

16 Jan

Good evening to all,

I said in my previous post, since we have been talking a lot about wiring and electrical aspects…

at some point comes the “routing” of all those connections. Below you can see if my apartment and

the three key area of interest: the heating system location, the breakers box and last but not least my nest thermostat location.

A couple of comments:

  • all rooms are fitted with cast iron radiator
  • each cast iron radiator is fitted with a thermostatic head to the exception of the so-called “Bedroom 2” where the thermostat is located (for obvious reason)

the idea is to regulate the coldest room to whatever temperature I need and let all the other room (warmer in general) get settled via their individual thermostatic heads.

All I can say even before the Nest this setup worked pretty well – but the smartness of Nest is likely still to bring energy savings (hence dollars, Euros or whatever your currency is – I am flexible). the only issue I know with this setup, I will likely have is the auto-away feature not working well given the location of the thermostat (comments are welcome as usual).

nest thermostat appartment

Current plan:

– to wire my nest thermostat to the breaker box where the Aube RC840 unit will be located (this requires 3 wires, W/R/C)

– wire the aube RC840 to the Gas heater (this requires also 3 wires Ns/Ls/Lr).

Alternative plan:

– I may place my Aube RC840 right next to the gas heater (in case I struggle to add an extra wire – see my previous post)

– route W/R/C wires to the “breaker box” and then dispatch them to the nest location by means of proper “jumpers”

wiring nest thermostat aube rc840 heating system

I have full flexibility when it comes to the number of wires to be run from the green box (the breaker’s box)

to the Nest Thermostat, however, I am missing 1-wire from the green box (the breaker’s box) to the gas heating system (blue).

As a side comment, a Neutral/Line/Earth are also needed to supply the Gas heating system (hence the 6 wires needed)

talk to you guys soon, any feedback? questions? critics? candid feedback is always welcome!

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