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Have measured my room(s) dimensions, window sizes etc and have had quite varying results. For a start, none seem to accommodate a 'normally' (1900's) built stone terrace house with a cavity (they have options for brick etc) I mean how thick would the stone be anyway? One site quoted 1.1 Kw and...

Have just been looking at my central heating pipework and noticed that on a couple of runs (that are also situated under rectangle plastic trunking) that the copper pipes actually touch each other for 3 inches or so before branching out to less than an inch apart. Also on another run (again...

Thanks for the replies. Have just turned the electric off and the hob did work (didn't ignite obviously). Even with the electric on and the time display flashing everything worked/ignited etc, I could have swore it didn't before although it may have been because I tried it with the electric off...

Can't do at the minute as I'm not home until tomorrow but will check then. Thanks for the reply.

Ok, I have a fairly old Diplomat integrated gas oven and separate integrated gas hob. The oven is playing up and so we thought, for the oven part, we would get an electric oven (plug in under 3Kw). What I seem to remember though is that if we have the main electric power at the fusebox switched...

I must admit that was my first thought :)

I am after some advice please. I live in the middle of a row of about ten 1900's built terraced houses. The road is fairly steep. Next doors (downwards) house has been empty for about 4 years, with the householder just coming back now and again to collect mail etc. Anyway, he has now decided to...

In bold : Thats why I'm trying to depend on the hysteresis temp drop, at least it's guaranteed and (hopefully) would satisfy the room stat on at least the second burn. I've had Nest for quite some years now and been quite satisfied with it AFTER I had turned off all the learning 'software' etc...

Maybe it’s once it’s reached room temp and then fires the boiler for so long to keep topping up to maintain room temp ? Honeywells also have always puzzled me

This is the email I got back from WB Technical : Dear John The anti-cycle time is to protect against multiple burner start ups and so is calculated from the time in which the burner starts. If the burner is lit for a longer duration than the anti-cycle time, then this element has been...

Yes it will. If DHW has been used in the middle of a burn and then the tap is switched off, the display shows the DHW temp, after 1 minute ( the default time) the boiler will then fire up and show a lower temp on the display ( I assume the CH temp) and then burn as normal. After reaching SP+4...

yeah it can throw it John, it does on mine anyway, ours was in the middle of a burn, someone ran the hot tap for a while which put the temp on the display up, I then noticed that the boiler had gone into the anti hysteresis mode (204 as it had run past my anti cycle time of 5 mins), after they...

The anti cycle time, on this burn, will have been used up because of the length of the burn (about 1 hr 20 mins). so therefore it will be on the set anti hysteresis only. The anti hysteresis drop is from the original flow temp (60-14=46) Somebody may have just run some hot water just prior to...

I tried pump speed 1 but the water wasn't hot enough entering the rads, on speed 2 I'm only gaining a couple of degrees extra drop at the boiler so I put it back to speed 3. Our heating is set to run most of the day for a block of 15 hours (18c from 0700 and 19c from 1730 until 2200), for 3...

Wouldn't there be a case of strangling a little too much though and it (the boiler) then can't get rid of the heat quickly enough, so that the same scenario arises? I'm not an expert, just curious and learning the best economically and comfort wise.

The boiler might fire for 5 or 6 minutes which would then mean it's literally off for a couple of minutes, it may even be seconds (until -2 hysteresis is hit) before going through the same cycle scenario again. Is this better than a longer burn a la waiting for the anti hysteresis to drop the...

I’ve tried it John, it obviously depends on how high the flow temp is as to how fast it reaches -2c hysteresis. On 50c flow it’s a couple of minutes, meaning it’s more or less firing until room temp is reached but the boiler fire time will also be only a few minutes. That’s what I observed anyway

Hi John Yes it takes around 9 minutes to drop to the anti hysteresis that I have set. If I set it any lower then yes it takes ages, but this way I’m guaranteed a drop no matter how long the boiler fires for. The Valiant boilers anti cycle software obviously works differently

Yes, whatever is longest, NOT the first criteria that is hit. The boiler will show which criteria it is using via the code(s), 202 means it's using the anti cycle TIME and 204 means it is using the anti hysteresis. You will find it initially shows 204 and then if the criteria is not achieved...

Your logic is correct. First off, the anti cycle time (on a Worcester) is the TOTAL minimum time on/off. E.G On the first fire up the boiler will easily run the anti cycle time you set of 15 minutes, therefore when it reaches SP +4 (Boiler flow temp +4), it won't have any anti cycle time to use...