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Thanks :). So the way I have understood it, the boiler temp setting overrides the thermostat. So if I put that low then no matter how high my crazy lodger puts the temp on the thermostat, the boiler will switch off well before if I have the boiler set to 3 out of 6?

Hi, I have a Worcester 440cdi and a Honeywell wireless thermostat. If my thermostat is set to 21.5'C but I turn down the knob on the boiler from 5 to 3, does this mean I am using less gas?

Thanks, that makes a lot of sense. No chance of turning the thermostat down. I have a moaning lodger. We share the bills so she can turn it up to what she likes although I have turned down all valves except for the one in her bedroom and bathroom. I have also found out some useful feautres on...

Thank you. So using that logic, if I turn all my TRV's to 3 out of 6 except the hallway (where thermostat is, no TRV) then will my boiler use nearly half as much gas for heating?

I have TRV's fitted on all my radiators, except where the thermostat is. A guy at work was telling me it doesn't matter if I set them to 1 or 6, the boiler is still pumping through the same amount of gas until my hallway thermostat reads whatever temperature I set it to. Can anyone help with...

Pressure was 4 bar and 12 litre/min off my old lead piping. That has now been upgraded to 28mm piping so should be greater (it certainly feels a lot more powerful, the shower nearly flies off the wall now!). The same problem I experienced with my Potterton WAS the diverter valve. Getting that...

I don't suppose anyone can comment based on average conditions if I can expect two hot showers simultaneously from this boiler as my plumber thinks or when Worcester come, are they likely to say it can only run one shower at a time? The fact that I only get hot water from the sink if I turn...

I must have misheard him on the phone! I'll wait until Worcester have been out before asking him to clarify. The Worcester 440Cdi I have is the newer model with 25litres/min output BUT I remember him saying awhile ago that this relies on a certain input temperature which was ridiculously...

My plumber came back this morning and said the gas pressure is now working fine. But there is still the problem that I only get hot water when I turn the kitchen sink on full (hot water is fine when I turn the tap half way when the heating is on) and I get luke warm water when both showers are...

Thank you! That makes sense now. Now I just have to organise for them to come back and connect it to the boiler.

For a 4m run? The boiler is in the next room!

The loft company fitted the radiator today, and they told me they left the pipework for the radiator running to the room where the boiler is installed (at the back of the loft). The radiator TRV is set to 6 and there is no heat (CH is on at the moment) so I have established it is not in...

Apologies in advance for the blond question. As part of my new loft conversion, the loft company told me they would run the pipework for the new radiator and leave the pipework in the loft ready for the radiator to be connected to the boiler. The radiator was fitted today (I did tell the loft...

Thanks for all your help. The the output you are getting from your Vaillant is what I was expecting from my Worcester. My plumber came round this morning, measured the gas output at the meter with all the taps on and said it was measuring 15 when it should be measuring 22. So he asked me to...

The cold flow rate was 12 litres/min, pressure 4 bar. That was with the old lead piping. Now that has been upgraded, I don't know what it is but it is definitely better. I also had the gas regulator changed to increase the pressure. I will see if I can measure it today. My installer is coming...

What temperature (relatively) should I expect if I have two showers running at once? Less temperature, less pressure or both?

The Ferroli may be £200 cheaper at the start but is getting an annual service (£100?0 part of the conditions of the five year warranty?

Hi, I had my new boiler installed which was completed on Tuesday. It is a Worcester 440Cdi (combi) and installed in the loft. There is bathroom adjacent to the boiler (same level). There is another bathroom directly below. The kitchen is directly below the bathroom. So they are all in the...