Recent content by snb

Nice link to forecasts!!!!. How about you show a link to the actual performance?

How can this be true if you have such high gas usage! if the demand rises dramatically when the temp falls this points directly to poor insulation and / or high leakage rates. Hot water return pumps use massive amounts of heat especially if the hot water circuit isn’t insulated. This can often...

A lot of waffle for what is a very basic setup consisting of 2 heating zones (1 heat zone comprising the underfloor) and a hot water zone. This should be incredibly easy for any half capable electrician. The only awkward bit to remember is to turn the hot water disinfection off on the nest or...

Not uncommon for a shared soak away. Most new build sites have a shared soakaway that often takes up to 3 properties. Yes it is lazy but it is within the building regs. You need to speak to your neighbour in the first instance to make them aware and then the second course is to contact building...

Fault can be either or both the expansion vessel Bladder has debris on its seat or the pressure reducing valve sticking.

why an external model?

If the unit is waiting 20 minutes to return to heating after a demand for hot water then either you don't have the boiler settings as per the changes i suggested or you have altered them from the factory default because that would give a max of 5 minutes between a demand for hot water and the...

without looking at the system installation it is often difficult to determine all of the probable causes. I have well over 50 of the 8000 boilers installed with 2 that have complained about similar issues to yourself. one is because they have a large household all getting ready for school and...

if you have changed these settings then the delay from drawing hot water to heating starting again would be about 75 seconds. As a comparison for other combination boiler manufacturers this is about the same time delay. You cannot compare to older model boilers as there was a change in 2019 to...

change setting 3-b2 from 5 (default ) to 3 this the time between a thermostat asking for heat and then asking again 3-c6 from 1(default) to 0 this is the delay time after using hot water or preheat activating 3-d1 3 (default) change to 5 or 6 to increase pump speed around system if poor...

A very poor rough install. cables exposed on electrics from junction boxes etc. no insulation on pipework(1m min from cylinder) combination valve on cylinder should be above tprv cylinder data plate not completed flexible hose on expansion vessel questionable as i think gledhill state it should...

You need to check D0 in settings. My guess this has been down rated too much. Let us know what it was set at. If anything below 18 then increase to that. If above then increase by 4

you do realise these posts are 11 years old!!

why can't you run the run the tap? the gas has been disconnected not the water. it may not run hot but you would feel if water was running through it

dhw plate heat exchanger partially blocked