Comment by bluGill

Comment by bluGill 2 days ago

> good link on how the thermostat gets paired with the boiler?

You should have a book with the boiler that says how your system is setup. They nearly always include schematics and are very helpful. Typically you can open a cover and see the wiring details as well.

Forget about web sites, there are too many different ways a system can be setup, so even if they are not slop they can still be inapplicable for you. Once you know what you are looking at you can sometimes get useful information from the web, but until then you can't sort out what is useful for you.

ghaff 2 days ago

Yeah. Have your manuals handy if you get a furnace guy/electrician in. My electrician actually wired up my thermostat wrong when I got a new thermostat in.

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zabzonk 2 days ago

Thanks, and to the other guys. But I am asking about a remote wireless thermostat. How does it know to talk to my boiler, and not her next door's?
As I said totally OT, and I do have a couple of good C/H firms I can get in to sort it.

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- ghaff 2 days ago
  
  Sounds like an awful idea in general. Think KISS concept. But you'd have to look at manuals. There's probably no single answer. (I was thinking of wireless control of the thermostat itself.)
  I'd add that, where I live (New England), furnace failures can be basically catastrophic so any theoretical convenience advantages just aren't worth it.
  
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  zabzonk 2 days ago
  
  Wireless thermostats are really common in the UK. I don't know about elsewhere. I'm interested how they pair (like Bluetooth) with the boiler.
  Basically, the thermostat is in a living area and you set the temperature(s) to what you want, it senses them, and then talks to the boiler (in my case in the roof-space) to heat up (or not, via radio) the water in the radiators to satisfy that. It's a feedback loop.
  
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  ghaff 2 days ago
  
  I'm maybe just a fuddy duddy but relying on wireless tech for critical systems unnecessarily seems like asking for trouble. Running wires to a boiler isn't generally that complicated and it's just one less point of failure.
  
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- bluGill 2 days ago
  
  That depends. Sometimes because they have encryption. It isn't hard to have shared keys of some sort. If there is no internet connection on the link (which is possible - I've never seen where both systems connect to wifi, but if they do worry!), and so you don't have to worry about malicious hackers and in turn the encryption is good enough even if done somewhat wrong.
  Sometimes they are just send a radio signal and hope nobody else in range is using that frequency.
  So again, there are too many different ways this is done to guess. Unfortunately they probably don't put this in the manual.
  
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