Triple zone boiler timer?

I don't know of anything which meets your exact spec, but why not do the following?

Have a simple single channel timer to turn the whole lot on and off - so that you don't waste power at night. [You won't then get 'instant' hot water in the middle of the night, of course] The output from this timer would feed the HW zone directly, plus 2 manual switches - one for each space heating zone. The outputs from the manual switches would feed programmable room stats - one for each zone - giving totally independent control over when the upstairs and downstairs zones come on, but with the ability to switch them off altogether with the manual switches.

Are you saying the installer hasn't met the agreed spec or that you have changed your mind?

You don't say but I assume that the installer has provided an independent valve for each zone. I would suggest that you think beyond independent time control for each heating zone towards a programmable thermostat for each zone controlled by the provided single heating time control. Either hard wired or if that is impracticable then look for a wireless solution.

Jim A

|> I have had a Baxi 105 Instant boiler fitted, which works fine, but they |> have left me with a dual Danfoss FP715Si which does not switch permanently |> off, or have a once per day timer, and the Advance Programming Options 2or |> 3 on/off's per day does not work. . | |Are you saying the installer hasn't met the agreed spec or that you have |changed your mind?

I specified everything else but not the controls :-(

Is the ChannelPlusXL any use?

|> I have had a Baxi 105 Instant boiler fitted, which works fine, but they |> have left me with a dual Danfoss FP715Si which does not switch permanently |> off, or have a once per day timer, and the Advance Programming Options 2or |> 3 on/off's per day does not work. . |>

|> My requirements are: |> The boiler being the Instant option keeps about 7 litres of water hot at |> all times, and so uses some gas even when hot water is not being used |> and |> needs to be off at night or when the house is empty, or with one two, or |> more, on periods at other times. |>

|> The upstairs zone is not used in spring , summer and autumn, so needs to |> be off completely at these times, or with one two, or more, on periods |> at |> other times. |>

|> The downstairs zone needs to be off during the summer, or with one two, |> or more, on periods at other times. |>

|> I require three independent controls for downstairs, upstairs, and water, |> respectively, each with a minimum of two on periods daily, and |> independently switchable off,. These functions must all be accessible |> from the front panel, which is not possible with the present controller. | |Is the ChannelPlusXL any use? |

Which bit is missing? I have had a very bad day so give me a clue and I will look again. One other thing is that you could just turn the thermostats on the heating zones down to frost settings when they are not needed. Adam

I do not like using hardware for things which they are not intended. Programming should IMO cover everything necessary.

These things only do half the job, I would have hoped that all eight would have been combined into one, but that is the programmer in me speaking :-( The ChannelPlus H37XL, or ChannelPlus H37VXL will do, except that I really only need one on for all seven days, with everything else as an option, but that may be too costly :-(.

I still think it does what you want :)

Still, at least you were not woken up at 3.30am on the first day back at work by your apprentice using his free call to tell you he has been arrested for assault and then at 7.00am when you did get up (again) for work finding out that you have a flat tyre.

Adam

|> |> Not quite, but a lot better than the one I have got. Bookmarked :-) |> | |> |Which bit is missing? I have had a very bad day so give me a clue and I |> will |> |look again. |> |One other thing is that you could just turn the thermostats on the |> heating |> |zones down to frost settings when they are not needed. |>

|> I do not like using hardware for things which they are not intended. |> Programming should IMO cover everything necessary. |>

|> These things only do half the job, I would have hoped that all eight would |> have been combined into one, but that is the programmer in me speaking :-( |> The ChannelPlus H37XL, or ChannelPlus H37VXL will do, except that I |> really |> only need one on for all seven days, with everything else as an option, |> but |> that may be too costly :-(. | |I still think it does what you want :)

I do not think I will get anything better Thanks :-)

You beat me to it Adam, good bit of kit Channel Plus.

-- Steve Dawson

Agreed. The only 'improvement' I'd make is to use a normal 2 channel timer, one channel for the HW as you describe and the second as a 'master' CH timer whose output goes to the two (or more) programmable stats.

This is the approach I took for a very large house with four heating zones and HW. The ability to switch all the heating off in one place is more useful than you might at first think.

The reason I suggested this was that he seemed to want to operate the downstairs zone but not the upstairs zone at certain times of the year. Whilst he could do it by programming the upstairs stat to a low temperature, a couple of manual switches seemed simpler to me - and could be located right next to the main timer.