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Boiler Pump Question

Baz123 Avatar
6y, 10m agoPosted 6 years, 10 months ago
Hi all,

Im in the process of having some quotes for a new boiler (under the scrappage scheme).

I have had a few guys out and found the one I want to use, but he says the new boiler that he fits (a Vaillant Ecotec 428 Regular Boiler) needs to be directly connected to the pump for the central heating as the pump will turn on up to 60 seconds after the boiler and this is not good for the boiler. The problem with this is that it requires running a cable from the pump (upstairs) to the boiler (downstairs).

My question is, is he just saying this to make a few more quid out of me or is he right?

Also, at the moment my current boiler turns on and the pump turns on about 30 seconds later, what triggers the pump to turn on currently if there isnt already some sort of connection to the boiler alreeady??

Thanks in advance
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Baz123 Avatar
6y, 10m agoPosted 6 years, 10 months ago
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1 Like #1
the pump might be triggered by a thermostat or seperate controller - shouldn't be too much work to run a cable down to the pump if that's what's needed
1 Like #2
I think modern boilers have a low water content, so they really need the pump to be running before they fire up.

I would guess the boiler will start the pump and possibly check there's a flow, before the controller starts the boiler firing.

Go with the man, or check with the boiler manufacturer via their website.
#3
Thanks for the replies guys.
1 Like #4
What have you been quoted? Mine is around £2k, less the scrappage - includes some Magnetic thing to keep it all clean.

I'm told these boilers have built-in obsolence - the condensing apparently means that they cannot possibly last more than 10 - 15 years - OK, that's probably a long time, but I hate to think how much the replacement will be in 2025?
#5
smokieUK
What have you been quoted? Mine is around £2k, less the scrappage - includes some Magnetic thing to keep it all clean.

I'm told these boilers have built-in obsolence - the condensing apparently means that they cannot possibly last more than 10 - 15 years - OK, that's probably a long time, but I hate to think how much the replacement will be in 2025?


I have had 2 quotes back.....£2100, with the magnatec thing and the guy Im referring to further up has come in at £1500....
#6
hes right, the pump does need to come on ay the same time as the bolier, it is probably getting it's power supply at the moment via a motorised valve and that is why there is a delay on it
#7
souljacker
hes right, the pump does need to come on ay the same time as the bolier, it is probably getting it's power supply at the moment via a motorised valve and that is why there is a delay on it


Sorry for being thick but how does the motorised valve system work? How is the pump being triggered?
banned#8
ive just replaced a wickes boiler that cost me about £ 500 eleven years ago with a new ariston boiler that has had avery nifty wirefree thermostatic controller connected , the boiler was £600 , its very efficient compared to the old one and almost silent, so price wise it was a fair deal i thought. : )

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