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MARKAL is a numerical model used to carry out economic analysis of different energy related systems at the country level to represent its evolution over a period of usually of 40–50 years. The word MARKAL was generated by concatenating two words (MARKet and ALlocation). Various parameters such as energy costs, plant costs, plant performances, building performance and so on, can be input and the software will choose an optimal technology mix to meet that demand at minimum cost. It is available from the International Energy Agency. TIMES is an evolution of MARKAL and both energy models share many similarities.
I have a hot water slab leak which is found behind my bathroom vanity. We heard the noise for a week but never saw any water. Just today we saw water starting to come up under the vanity. I found the leak, my question is is it ok to run the hot water just long enough to take a shower? Does it...
Hi there. I have Grant oil fired boiler which when cold, takes multiple times to fire up. It will run for say 20 or 30 seconds with hot exhaust gases then it stops. The fan is still going then it starts off again and stops again. After 4 or 5 goes it runs fine. When the boiler gets up to...
Hi guys thankfully not been needing to com on for a while but could do with a pointer.
2 weeks ago I noticed boiler didn’t fire for hot water in kitchen which is next to boiler and cold main in, it came on after a few seconds longer than norm I thought just a blip, but this weekend and since...
I have two Zanussi washing machines, one is a 2006 model ZWF1221G, the other, a 2013 model ZWG6141P.
I can run both from the CWST or the mains, recently was doing a bit of pipe re routing and noted the following.
On the older machine if the water supply is changed from the CWST to mains then the...
I bought last year and would like focus on Electrician,HVAC, Boiler breakdown, have no time use this unique machine. Totally like brand new.
Kamco CF 90 kits for sale,collection in oxford uk, including
Kamco 90 Used 2 times,
Kamco SystemSure IK6 Injector used 1 times,
Kamco Combimag Split Twin...
Hi all! I hope this is is the right place to be asking this question. I have searched all around the internet but can only find issues that are similar, none that are the same as mine.
I can get specific models of everything and take pictures when I am home if that would help anyone give...
Hi all
I have moved into a house with a combi boiler. The heating system worked fine for 2 weeks (apart from some tops of radiators being cold). I decided to bleed the system, and let a lot of air out. As expected, the system lost pressure. I repressurised the system to 1.5 bar at the boiler...
Hi,
I would love to get some expert thoughts on my pressure loss problem.
I have just replaced my boiler and radiators to fix a raft of problems with the heating system mostly caused by old radiators filled with sludge. Unfortunately the loss of pressure hasn't been fixed.
There are no signs of...
Hi there,
I am writing a free app which will give a guide as to the purge time required for a commercial gas meter.
So I have determined the installation volume and the total purge volume but I'm looking on how to determine the purge time.
From what I understand, I need to take the largest...
hi guys, went to carry out a service... went to high fire setting mode but nothing happened? Blue flashing light 5 times.. checked condensate not blocked.. flue good..
Reset the thermostat knob but nothing happened. Standing gas pressure 25mb to the gas valve..
When I put the heating on from...
Push button cistern.
Toilet will flush only say twice.
Filling the cistern after very well.
After 2nd flush water stops filling cistern.
The left hand side has a plastic tube say 4 inches long from where the water comes. Along side is a small branch with a blue button with two arrows.
By luck I...
Hey,
Not sure if I'm allowed on here - I'm just a homeowner. Not a plumber/professional.
I've now had 3 plumbers visit and none seem to be able to diagnose this problem.
So, I have a standard Worcester Bosch combi boiler in my 4 bedroom, 2 bath, 1 WC flat (on 3 floors).
Heating works like a...
Hi i recently had a Honeywell ST9100C timer installed and my boiler keeps turning the heating the when its not timed to.
the new timer was replacing a Danfoss 103
the boiler is ideal logic 30
thermostat is Honeywell T6360B
I have looked through the boiler manual and researched the internet...
Hi all,
I have a problemwith the hot water from my bath tap. Thetap is a mixer type and the cold water works fine. I’m also getting hot/cold water from thesink.
I’m not sure whatthe problem is, i.e. does the tap need replacing or the does the spindle needreplacing. Can anyone advise me...
Hi guys,
You were so incredibly helpful with a boiler issue I had last year that I thought I'd ask come back and see if I could benefit again from your kind and generous advice.
The issue I have at the moment is as follows:
I have a megaflo in my basement which is below ground level.
I...
Rystar00
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Hello all
I wonder if anyone has any idea what might be ailing my boiler? This requires quite an explanation for afirst post, so congrats to anyone who gets to the end!
So, I have a Worcester Bosch 30 Si Compact boiler, installed just lessthan a year ago by a reputable Gas-Safe registered...
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