thermostat | Page 7

thermostat

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  1. H

    Replacing 3 wired thermostat with 2 wired digital thermostat

    A 3 wired thermostat is being replaced with a 2 wired digital thermostat powered by batteries. Is it necessary to know how the 3 wired thermostat is connected to the boiler before replacing the thermostat? I have attached images of the 3 wired thermostat and its wiring diagram.
  2. EricMark

    Linking wall thermostat to radiator thermostat.

    I brought four MiHome Energenie TRV heads from my old home, and I decided in this house Nest was best option to control the DWH and central heating given the limits I had to work with, mainly just 2 wires between house and flat where the boiler is housed. There is an option to link Nest and...
  3. A

    Am I allowed to fit a Nest thermostat myself?

    As per title really. I’m considering buying Nest thermostats, I am confident I can install it appropriately but I don’t know if legally I’m allowed to. No formal quals but experience in wiring (for audio, not power) radio/recording studios. The current situation... I have a new build property...
  4. B

    Hot water thermostat

    I am having trouble understanding a hot water thermostat which does not behave as expected. What does the "reset" button do, and is it necessary to use it after adjusting the temperature dial ?
  5. C

    Honneywell Thermostat showing low temp and Frost Mode

    Hi My thermostat usually shows a room temp of between 18 and 20 degrees However occasionally it is displaying FROST MODE and showing low temperatures. Basically when it goes like this we can either have heating on or off with no control which is very annoying! Can anyone advise, I have...
  6. D

    Fitting a new WiFi thermostat

    Hi I'm not a plumber but a DIY'r, so wondering if any of you could help me out please. I have bought a static caravan and it has a 'Ariston E-Combi Evo - 24EU' boiler in it but this has a thermostat which is fitted to the boiler itself. I wuld like to change it for a WiFi one so I could put it...
  7. C

    What Smart Thermostat for a 2 Wire Connection? Currently Honneywell

    Hi all, new to the forum. I currently have a Honneywell c901 thermostat set up to control my combi boiler. I've been looking to buy a smart thermostat to replace the honneywell but when I removed the panel, I see it only has two wires, I hear there are usually 4 wires or more. Any advice...
  8. stuarth

    recommend wireless room thermostat & programer

    Looking for a wireless room thermostat & programer for a customer that is not worried about smart controls but rather ease of use and reliability, what would you recommend that won't break their bank?
  9. E

    Underfloor Heating Thermostat in Bathroom

    Hi, Is it allowable to install an underfloor heating thermostat inside the bathroom but outside any of the listed zones? We are having a room converted into a bathroom and there is no suitable place directly outside the room to install it, however the new bathroom itself is about 3m x 3m and...
  10. M

    Danfoss CHRONO setting

    I’ve recently had a new boiler and one of your thermostats installed a Danfoss RET1000 B/M/MS thermostat Is it normal for the thermostat to fire up the boiler for 3 minutes and then turn off for another 4 or 5 mins and then come back on for another 4mins etc 24 hours a day once it has hit the...
  11. A

    Thermostat/Control box help

    Hi all. I'm trying to fit some smart thermostats but they require a mains connection. I have the wiring in place from the existing set up (battery powered thermostats), but they have no mains voltage going through them. The wiring goes to a Danfoss WC4/B wiring Centre as the central heating is...
  12. V

    Wiring Heaters to thermostat.

    Hi all! My current dilemma: What was three small offices is now one large one. So I have x3 DB's feeding x3 electric heaters on their own timers and built in stats. I need all 3 heaters on a single stat and timer to operate together and be tamper proof. My thoughts are to stick all 3 on one 25A...
  13. C

    Old and new Thermostat wiring

    old thermostat can I do away with terminals 2 and earth and install a standard common and normally open thermostat Old thermostat 2 neutral 3 normally open 1 common
  14. P

    DHW cylinder thermostat and cut-out.

    Hi again ...... I have inherited a central heating system which is oil fired and ancient (mid 1980's), but works perfectly so up until recently I had no reason to go looking for issues. The only ''new" part is the unvented DHW cylinder which, although it works, has NOT been installed in...
  15. B

    UFH thermostat feed what size cable?

    Hi all. I’m just planning out my electrics before boarding the new en suite. Can someone verify. Should a fused spur come directly from a socket or can I break in to a single cable using a Wago box? Also is 2.5mm2 cable ok to the thermostat? I’m not making the connections, I will be employing...
  16. I

    Rewiring fridge to bypass thermostat (for external control)

    Hi, I'm attempting to adapt a fridge into a homebrew fermentation chamber with a digital thermometer controlling the compressor via an arduino and relays. Initially, all I need to do is take out the thermostat and rewire so that the compressor always runs when the power is on, ideally with the...
  17. G

    Megaflo Y plan problem

    Hi there, I have a Megaflow wired to spec here (bottom of p21), i.e. in a Y plan with additional 2-port valve. When CH is on and the stat switches to satisfied, heating sometimes stays on, sometimes switches off as commanded. I thought it might be the 3-port's head so replaced that; is it...
  18. M

    Potterton EP2000 Room thermostat wiring

    Ok im looking at changing my Potterton EP2000 Room thermostat over to hive to channel to work with hw/ch .. the only problem is wiring no 5 . Which is I guess the switch to motorised valve .
  19. I

    Quick Thermostat Query

    Good morning all, Probably quite a simple question for all of those who use thermostats/temperature sensors regularly. I'm in need of a thermostat which has the ability to close it's contacts once the temperature in the room has reached a degree which is deemed too high. Do most thermostats...
  20. Sean Hill

    Replacing an existing thermostat with the Nest

    Hi, I'm having a look at how to install the Nest (3rd gen) I'm I wanted to have a shot at it myself before calling in a sparky. I have a boiler (Ideal Classic) in the kitchen together with a programmer. The existing thermostat however I think gets it's supply from the wiring junction up in...

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