#1 By: Prakash, March 4th, 2014 09:55
Comment from the School
I know what the issue is and I am trying to get it fixed:-
We have a valve that is sticking and causing the school to not reach the correct temperature. Therefore our “smart” boiler is setting the system to come on earlier and earlier to reach the desired temperature.
I like the website. The detailed information for our site is too small to be of any use, I’m sure they will fix that soon enough. It will be handy to see the consumption like that. Well done DMU!
This information should give a push in the right direction so thanks for the heads up.
When we get the valve fixed, We will go from a frown back at a smile please.
#2 By: Graeme Stuart, March 5th, 2014 12:29
This is something I have heard from others. I think it affects Internet Explorer (IE) 9, possibly also IE10. The best solution is to use chrome, firefox, opera or any modern browser. In the medium term we may find a fix to support older browsers.
#3 By: Jas Odell, March 10th, 2014 06:58
Kieron, the boiler fired at 21:00 hrs yesterday. Can you check the timer again please? Jas
#4 By: Kieron Maher, March 10th, 2014 08:20
Hi, The timer was set to reach temperature for 5:00am. This is due to the faulty valve and the chill the school gets over the weekend.
This morning I have set the timer to come on 7:20am - 3.30pm Monday - Friday. This should provide better usage.
I'm just hoping the school is warm when the kids come in. (The sticky valve has been fixed so it should all be fine)
Very pleased to have a website to check the consumption on! Good work DMU!
#5 By: Jas Odell, March 11th, 2014 03:59
Hi Kieron. The gas boiler fired at 01:00am today. Hope the kids are comfortable!
#6 By: Kieron Maher, March 17th, 2014 05:50
Just to let you know, Thanks to this site I am experimenting with the boiler settings to get the school as economical as possible. I will keep you posted with the results,
#7 By: Graeme Stuart, March 17th, 2014 06:04
Brilliant! That is exactly the kind of thing we were hoping to support.
#8 By: Jas Odell, March 19th, 2014 04:54
The gas was on constant from 03:00am 18th to now. Were the setting adjusted? Jas
#9 By: Graeme Stuart, March 21st, 2014 08:00
Yes, the gas has been on pretty much constantly since the 18th. It looks like something is wrong.
#10 By: Jas Odell, March 26th, 2014 05:05
Keiron is trying to get the timing right by changing the settings. The gas fired at 23:00 last night.
#11 By: Kieron Maher, March 26th, 2014 06:08
I was experimenting with the schools overnight temperature to see if I could get the gas consumption down. Our boilers normally fire at 2:00am and consume on average of 170KW per hour to get the school to 21 degrees. I tried to increase the night time temperature to decrease the surges of gas required to heat the school from 12 degrees to 21.I was hoping that the boilers would keep topping up the heated system (Using approx 10KW per hour) and decrease the overnight surges using less gas overall.
Turns out this way uses a lot more gas. (I did have a period where it worked as planned - but that was short lived)
The boiler is now set to 20 degrees day time temperature and 14 degrees night time temperature. Hopefully this will use a lot less gas. (It will take 24 hours to register on the system)
Any advice on "ideal" settings for lower usage is welcome. Our building is poorly insulated and the system automatically works out what time to turn on based on internal and external temperatures.
#12 By: Graeme Stuart, March 26th, 2014 08:40
If the building is poorly insulated then the best strategy is probably to allow it to cool overnight and bring it back to temperature in the morning. Keeping the building at a higher setback temperature will cost because there will be large heat losses. Of course, a set back temperature is necessary to avoid freezing pipes and so on.
An initial suggestion would be to turn the heating off as soon as the building is unoccupied (the building will probably cool down quite fast). Then work out how early it needs to be switched on to achieve the desired temperature by the time the building is first occupied in the morning.
Looking here it seems that it takes about three hours (the width of the spike) to get up to temperature from scratch. This will vary depending on the outside conditions and the down time. But the optimum start system should adjust for that. So 2am is probably a bit early, about 4am seems about right to be warm for 7am.
I also notice there are examples of very strange timings on the data like this when the heating was on over night (about 8pm to 8am) and not in the day!.