C/H circulating pump

Author
Discussion

stuart313

Original Poster:

740 posts

112 months

Tuesday 27th January 2015
quotequote all
Does anyone do normal pumps anymore? can you still get one of the red 3 speed pumps nowadays, I need one for a gravity system.

Anyone know where I can pick one up tomorrow in the Manchester area, I will try plumb centre but with all this eco bks I bet they only sell the modulating ones.

PS I know it may not be the same size as the original 20 year old one.

Pheo

3,324 posts

201 months

Tuesday 27th January 2015
quotequote all
http://www.screwfix.com/p/grundfos-alpha-2l-15-50/...

Three fixed speed 4 variable.

What's wrong with a modulating one?

stuart313

Original Poster:

740 posts

112 months

Tuesday 27th January 2015
quotequote all
Pheo said:
http://www.screwfix.com/p/grundfos-alpha-2l-15-50/...

Three fixed speed 4 variable.

What's wrong with a modulating one?
The same problem as the one you have posted, the price.

this ismore like it

http://www.screwfix.com/p/flomasta-central-heating...

Out of stock though everywhere.

Gingerbread Man

9,171 posts

212 months

Tuesday 27th January 2015
quotequote all
Meant to save quite a bit on running to pay for itself.

stevensdrs

3,208 posts

199 months

Tuesday 27th January 2015
quotequote all
I just replaced my 3 speed pump with the new wilo modulating pump from screwfix. Ok it cost a £100 but you get what you pay for and it will last for years. It's very quiet too.

catfood12

1,410 posts

141 months

Wednesday 28th January 2015
quotequote all
I'm with the OP. What happened to cheap and cheerful, simple pumps ? Surely we don't have to pay £100+ for a pump ? I bought up the last of the Wilo stock at B&Q last year at £40 each (sorry OP, all spoken for). Now they only sell £100+ ones !

Pumps tend to last 10 years+. I doubt the new ones will be any better.

Oh, FYI, even a merchant/B&Q £100+ pump is cheap compared to replacing a pump in a Keston system boiler.......

Gingerbread Man

9,171 posts

212 months

Wednesday 28th January 2015
quotequote all
Last I knew you could still get a 'traditional' pump ordered in for your combi or System boiler were needed, but the more expensive models now are also more energy efficient. That's what has pushed them onto the market. They're meant to save you quite a bit though, therefore paying for the cost difference.

Rickyy

6,618 posts

218 months

Wednesday 28th January 2015
quotequote all
As GBM said, you can still get traditional pump heads for combis etc.

Cheap pumps were false economy anyway, they only lasted a few years and were usually noisy straight out of the box.

guindilias

5,245 posts

119 months

Wednesday 28th January 2015
quotequote all
EU regs knocked them off the market - all new ones have to be invertor controlled. I got my last 3-speed one from Ebay for £50, probably old stock.

guindilias

5,245 posts

119 months

Wednesday 28th January 2015
quotequote all
Plenty on here from about £30! - http://www.ebay.co.uk/sch/i.html?_from=R40&_tr...

stuart313

Original Poster:

740 posts

112 months

Wednesday 11th February 2015
quotequote all
I ended up getting a modulating one from roolstation and with a quick flush out the system is up and running again. However the speed control is a bit confusing on it. It does either constant curve or proportional differential pressure, this means nothing to me, its a vented system that does radiators only, whats it best to set it on.

this is the only bumf I can find on it.

https://www.colglo.co.uk/file.php?filename=DAB6016... (page 3)

Thasnks.