Caillte wrote: » I have just connected my NEST thermo stat to my Tado TRVs via IFTTT and works a dream. I had considered buying the tado smart thermostat for the full installation but now no need to. Tado talks to Nest via IFTTT with the help of stringify. Just saying.
deezell wrote: » So tado TRVs can now fire the boiler via the Nest? That's an excellent bit of bodgeing!
Caillte wrote: » Yes, they can call for heat as a trigger to ifttt to do what ever you like then. My set up is: IFTTT: Temperature falls below threshold for a particular TRV/Zone trigger, Run stringify flow action Stringify: Increase the temperature by X° for X no. minutes on nest thermostat then decrease by same ° after timer expires. Seems long winded but works. As I have a house full of tado TRVs there is no fear in the house over heating or wasting energy. (except for my gas boiler primary heated immersion)
jarrieta wrote: » Hi, another long time lurker. My setup is similar to some of the already posted, but want to be sure before buying anything. I have a gas boiler with one zone and HW, my HW cylinder is not close to the boiler/controller and there are no motorised valves in the HW circuit or a stat in the boiler, so when the controller timer is on the HW is being heater by the boiler. This makes very inconvenient the current setup as I cannot have the heating for long as the gas will be wasted heating the HW to very high temperatures even if the hearing stat is open (not needing heating). Would a nest/tado with extension work for my setup? Would I be able to set up times for HW to be on independent of the heating (I know that if the heating stat asks for the boiler to be on the HW will be on too)? Anything else I might be missing? Edit: Now that I remember my current stat is in the entrance, close to the stairs, so I would rather use something that I can move to the livingroom or the bedroom as currently it is set at 13 degrees and sometimes it is very hot where we stay and sometimes cold. So I would say Tado is out Thanks!
deezell wrote: » Tado with extension or Nest will work good for you. Tado stat is wireless with the extension kit, so you can have it in the Living room on a little table stand. The extension kit can call the boiler just to heat the HW. If you put an inexpensive mechanical thermostat, about €15, on the HW cylinder it will turn off the boiler when the HW reaches temperature. If it is difficult to run the wires from this back to the extension kit you can get a wireless one for a bit more. If you want to prevent the HW heating while the room heating is on you will need a second motorised valve installed, the extension kit will control this. I'm surprised the boiler keeps running after the heating stat is open. It seems like the timer turns on the boiler and the stat only opens the heating valve. Does your timer controller have two zones and a timer each for heating and HW?, or just one timer.
xl500 wrote: » When you say one Zone and HW can you expand DO you have a heating Circuit Motorised Valve or as i suspect do you just have a boiler feeding your heating and HW directly and Wall stat just controls Boiler
jarrieta wrote: » Thanks deezell, you are right, the timer controls the boiler on/off and the stat controls the motorised valve for the heating. I was talking to the installer when he replaced the boiler, but it was way too much hassle to install the valves for controlling the HW and cabling a stat from the cylinder to the controller was a no-no. According to them it was a common setup in Ireland, something I found strange. He was servicing the boiler this year and I insisted mentioning the smart stats but he advised me against it as it was going to be quite expensive.
deezell wrote: » Lower heat or fully off is a personal thing. Some people don't like a heated bedroom while asleep, just when hopping in and getting up. You only mentioned that your system had stats, but does it also have a timer device to switch each zone on and off at programmable times? An EPH or similar control box. Some digital stats have the timing built in, but most zone valve installations would have a 2 or 3 zone controller which operates each zone valve in conjunction with the wall stat ( or HW cylinder stat) for that zone. Yes, second smart stat and Sitting room TRV will improve control. Check if the slow heating of the sitting room is to do with the rad/room size, or is the heated water slower to get there as the rad might be trimmed by it's other valve. Common enough that the sitting room will have a smaller rad or restricted valve as it usually has a fireplace, so builders assume it's rad is not the main heat source.
skerry wrote: » I haven't come across a timer like the one you mentioned yet......Before I replaced it with the Tado, the only programmable stat I could see was the Danfoss TP5. Other than that just a temp dial on landing for upstairs and a similar one on the thermal store..... There's also a digital unit that has something to do with the solar panels but I have no clue what that does other than tell me what temp water the panels are giving me. I'm sure it does more but I can't find....
deezell wrote: » Apologies, reread your earlier posts, you mentioned the TP5 which of course is both stat and timer, so you're sorted by swapping in the Tado there. I'm just curious as to whither the basic stat upstairs was untimed, meaning it would always be on unless you turned its temperature setting right down. Solar stuff looks after itself, it will pump the solar heated fluid through the cylinder coil if it's temperature exceeds the current temperature at that point in the cylinder. There may be other devices connected, such as a motorised valve to release overheated water on hot days, anti scald mixers and the like. You mentioned a thermal store. I'm assuming this is the HW cylinder or is it actually a thermal store cylinder, which is like a HW cylinder in reverse. Water heated by boiler or solar is stored there, but this water is common with the closed water system from the boiler that heats the rads. Hot water for taps is obtained by drawing cold water on demand through the store via a very fast heat exchange coil which heats it up. The advantage of a thermal store is that water heated by solar is available for heating rads as well as usable hot water. Sometimes referred to as a stratified cylinder or store. Perhaps you just have a normal cylinder, thermal stores tend to be pretty large, and are often just that, stores, still requiring a seperate HW cylinder to hold the consumable HW which doesn't mix with the boiler heated water.
skerry wrote: » Basic stat is upstairs is untimed as far as I can tell and like you said, only way to turn off is to turn right down. Figured a picture is worth a 1000 words so attached picture of tank. Presume this is thermal store/ cylinder in one. There's a return, flow and cold currently plumbed. There's a Honeywell motorised valve coming from the return which I only noticed has the lever on the bottom clicked into the lock position. Any idea what this would be controlling and whether or not I should take it off lock position? I'm presuming its the hot water control? Solar control panel is to the left there, but need to research this a bit more, particularly the big red light which I presume is telling me something is wrong, has been on since power came back after that circuit went dead a couple days ago.
deezell wrote: » As there's only a single flow and return, I'm thinking this is just a very large HW cylinder. You could google the make and model on the label to establish this. I would expect there to be a take off for the CH as well as flow and return from the boiler if it were a hybrid store/ HW heat exchanger. The HW outlet rises directly from the top of the tank, if it was via a heat exchanger it would more likely be side entry. Does the top connector of that Honeywell connect directly to the return of the cylinder, no branches? That would indicate it is the HW control, though when left open while the heating is on, it will reduce the flow to the radiators. It's odd that only a single zone timer stat was installed, I would have expected a 3 zone timer eith seperate stats. I can't see from the pictures but does the cylinder stat go to this valve? That would indicate it was the HW control. Cylinder stat closes, valve opens, valve microswitch close a and calls the boiler. Cylinder stat can be always on or on a timer. That's how it's meant to work, but maybe the valve is duff, or the wiring off in some way.
deezell wrote: » Sounds like a plan. Try turning the cylinder stat right down and up, see does it activate the valve, also, does it fire the boiler. Locked would be open ok.
deezell wrote: » If the valve is stuck open the stat won't close it when the water reaches temperature, so it will continue to heat to the limit if the boiler stat. If the stat was closing the valve, 45° would be quite low, 55-65° would be normal to prevent bacteria forming in the cylinder. You can replace the actuator part of the valve on its own (~€40), no plumbing required. Remove the old one from the valve body still wired and see does it turn when powered by the stat. It might be burnt out. If the valve itself is stiff and sticking you'll need the body replaced, which is a full new valve, ~€60. If you get the extension kit it will control 2 valves, one heating and one HW. The output of the HW relay on the extension kit would go through the cylinder stat to the HW valve. Currently it seems to be always on as there is no timer, and the valve is manually open. If the valve microswitch is wired to fire the boiler when open ( it should be), then I can only assume there is no control on HW temperature other than the boiler's own temperature setting, hence scalding HW. Edit. There is the possibility that the solar is heating the water to a very high temperature, though I think this unlikely this time of year. Definitely get that valve sorted first. You will have some control of HW temperature at least, solar notwithstanding.
skerry wrote: » Thanks again for the info Deezell. I played around with cylinder stat this morning and there doesn't seem to be any sign on movement from the Honeywell valve so I reckon its goosed so gonna look at getting it replaced in new year. So does the extension kit get installed in the hotpress and wired up to the cylinder stat and just take over control of HW? Looked at a video on YouTube and it suggested that extension kit is wired directly to the boiler itself which confused me greatly.
deezell wrote: » When you have zine valves the practice is to wire timers/stats to open the valves, the valves in turn have switch contacts to fire the boiler. This way one zone doesn't turn on the other zone, which would happen if all the different stat lives were cross connected at the boiler.
skerry wrote: » So does that mean its wired direct to the boiler or to the cylinder stat? Want to get extension kit in new year with extra stat but want to be sure it suits system. Boiler is in the range at the minute and hard to get at so not sure I'd be able to wire it direct to boiler. I always thought it was something that was wired up by the hot water cylinder
john_doe. wrote: » Was wondering would anyone know someone in Cork Area that could automate my heating system or be interested? There is a oil burner, stove back boiler , and solar Seems a complex enough system as just moved in. There are 3 analogue timeclocks currently and it's a bit tedious setting them. Would love remote control and to automate it but struggling to find somone. Some photos attached.
Shane732 wrote: » I’ve installed the tado smart system and have put TVRs on the radiators and am putting the extension kit on the water. Can I have the whole house as one zone? YES Is there something about not being able to have more than 8 TVRs in one zone? YES Can you have a tvr in more than one zone? NO. Does the smart stat need to be in each zone? NO** Any help would be much appreciated!
deezell wrote: to achieve an element of blanket control over multiple zones you could use devices like Google home, Apple home kit or IFTTT if you're up to it. Tado for their part have flagged the facility to copy a schedule over multiple zones as part of future app updates. Hope this info helps, probably confuses also!
john_doe. wrote: » Thanks The first switch controls the oil burner , just seems to turn it on and off. The second switch turns on and off the hot water. The third switch fires the rads. There are a number of thermostats in the rooms . Attached is a view of the pumps in the house.
deezell wrote: » Short answer is yes, it is server dependent. See link below for a discussion on another forum teasing out the implications of this if Tado goes bust or starts charging a sub ( like Hive I think?). As the V3 kit bridge is Apple home kit compatible, it seems that you should be able to run Home kit schedules directly to the stats and TRVs in the event of an internet or server failure. Currently if the net goes down the stat will stay at the last setting, with manual control only, and this is probably constrained to the manual setting configured on the app, choice of three, run for duration of the timer, till next scheduled event, or next manual intervention.https://www.avforums.com/threads/tado-smart-thermostat.2077764/page-6
Stoner wrote: » Lightwaverf had the facility to copy schedules to different individual TRVs. They have zones, this is all soft stuff and I guess they will all add the features that the others have. Stringify is another option here as you can add timers etc to different IFTTT recipes, or group a whole lot of single IFTTT recipes together and call them stringify zones even if your TRV heating system doesn't support zones yet.
white_westie wrote: » Thanks for info, i see you are a busy man over in avf too. Would sort of prefer full local control, so might lean towards just old school controls. Either way have to see what can be done with plumbing before deciding on how to control it. Did get my head around S plan wiring setup, so just need to see how wireless stats work with the setup. All a learning curve, so thanks again for all your input to threads like this.