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Author Topic: Grundfos Alpha pumps  (Read 10226 times)
kenm
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« on: January 25, 2013, 11:30:06 PM »

Is it worth paying extra for the Alpha2 over the Alpha2L ?
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Justme
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« Reply #1 on: January 26, 2013, 08:35:12 AM »

When I was in this position I went for the cheaper one.

You do know that they are now both old / obsolete models & no longer produced?

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Philip R
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« Reply #2 on: February 08, 2013, 09:10:30 PM »

The Alpha 2 has a digital display to show you the pump power. Worth paying the extra money for if you are using it for your own place.

I believe this pump is not obsolete. When this version of the alpha was introduced to the domectic market, there was little competition for it. Since then Wilo have introduced the Stratos Pico and Yonos Pico. However, ITT Lowara have had an electronically commuted pump on the market for years, just was not on the shelf at the local merchants or B&Q, Now there are loads of companies selling them, and the choice availible is bringing down the price to neare 100 notes for a 15/50 type circulator.

The old Selectric 15/50s and 60s are only on sales until stocks exhausted.

PhilipR
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Justme
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« Reply #3 on: February 08, 2013, 10:22:48 PM »

I had a fault on mine so had to phone the makers.

Tech guy phoned me back. They have def stopped making them according to him.

Due to a change in the regs I think he said. Mind he could have been wrong.

Its a lot extra to pay just to see if it using 15 watts or 30 ish.

Once its set you know what speed / pressure you have set it to so will also know the wattage.

How many people have the pump in a position that you can see it to monitor the display?
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1200watts solar 120vdc
FX80 Solar controller
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Philip R
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« Reply #4 on: February 08, 2013, 10:35:43 PM »

Justme,

Certainly for installations with a building management system, such functionality is useful. For the rest of us is would perhaps be a bit extreme to spend time in the airing cupboard recording the info and getting excited about it.

Befoe christmas, I was fitting anew shower pump and the householder had on of these Alphas installed. I was staggered at how low the pump power was anbout 13 watts for a 5 bed house, when in similar houses in the neighbourhood, Selectric UPS 1550 and 1560 have been set to run at full speed, above 90 watts. So the information is useful to the discerning houseowner / bill payer.

I will keep an eye on the availibility of these devices. ( my Plumbcenter catalogue has listed the "about to become obsolete circulators". The Alpha is not as yet yet listed in this category)
PhilipR
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ecogeorge
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« Reply #5 on: February 08, 2013, 10:57:36 PM »

Justme,

 For the rest of us is would perhaps be a bit extreme to spend time in the airing cupboard recording the info and getting excited about it.
                       Grin Grin
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pj
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« Reply #6 on: February 08, 2013, 11:23:34 PM »

http://www.navitron.org.uk/forum/index.php/topic,17259.msg197365.html#msg197365
FYI
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