How to install a Grundfos SCALA2 - A Plumber's Perspective

The Grundfos SCALA2 is an intelligent, self-priming pump with inverter technology that adjusts its performance according to household water demand, eliminating pressure fluctuations and resulting in lower running costs and perfect water pressure to every tap. It is an ideal solution for houses not on mains water and using scheme or rainwater to fulfill household needs.

In this video, Plumber Ben from Beautiful Plumbing introduces us to SCALA2, how to install it and some plumbing and installation tips and tricks along the way.

Suitable for pumping from water sources above and below the level of the pump and with a suction lift of 8 metres, SCALA2 also boasts Dry-Run and Anti-Cycling Protection as well as auto-start/stop. Key features also include quite operation that won't disturb your family or neighbours, one touch pressure adjustment and provides dynamic pump status for the operator through the Grundfos Eye. And all this comes enclosed within a tough, weather resistant outer casing. What's more it's simple to install with articulated connections that make hooking it up, even easier.

Learn more about SCALA2 at:

Or find your nearest Grundfos Authorised Dealer here:

Sections for this video include:

00:00 SCALA2 is a perfect solution for running a home that doesn't have mains water
00:32 SCALA2 features and benefits
01:35 Ben outlines some improvements and adjustments needed for the current pipework and setup
02:21 A tip from Ben about to apply thread seal to threaded plastic fittings
03:04 A tool list from Ben for the install
03:25 Installation part 1 - prepping the pipework from the tank
03:37 A tip from Ben about lose nut connections
04:25 Installation part 2 - completing the pipework and the connections to the pump and house
05:20 How to prime the pump
06:06 Best practice for starting the pump
06:22 Bolting the pump down
06:32 SCALA2 features that plumbers, in particular, will appreciate
07:03 Ben's final say on SCALA2

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[UnearthlyTraveler]

I used to be an Austrian Plumber long time ago, and now i am watching Australian Plumbers doing their Job, coz i have to install a Grundfos Pumb at home .. on a private basis

[maf]

I love the results and functionality of the pump, but we have had two failures in less than three years (Unit starts leaking from the housing). The first one was covered under warranty, but the second one was not, as it was more than two years from the purchase of the first SCALA2. Amazon and Reddit have dozens of people whose SCALA2 has also failed. Hopefully, they have addressed some of the reliability issues as we are considering installing another replacement since it is such a unique product.😥

[Looksurprised]

Can we see the pump running please to see the pressure it produces.

[Droog]

How do you address the blinking red light on the 5th alert on the Scala 2?

[jockgrieger]

if the pump runs dry will it prime itself

[jakethesnake]

Will this pump work with a reverse osmosis faucet in the kitchen?

[pauls]

What an absolute tool to everyone in the world as a plumber I apologise us plumbers don’t dress like this with his tool belt on and his press tool that’s about 30 years old never once had to scratch a plastic thread when using ptfe

[popcaller]

I want to use this for irrigation from a shallow well in my yard. Would I still require a pressure tank?

[LetsEDSplorePH]

What pipe size do you need for the inlet of scala2?

[rayFrio]

I currently have a Varem 200L Pressure Tank which is filled by a Myers 1 hp pump. Will the Scala2 replace the Myers pump or both the pump and the pressure tank?

[alwhed]

المضخة مميزة ولكن مالحل اذا كانت تعمل باستمرار بسبب وجود جهاز تناطح عكسي ؟ هل يمكن جعلها لاتعمل الابعد استهلاك 3 لتر ؟

[xmun]

I have the grundfos Scala 1 and when I prime the pump the water just keeps flowing out the bottom, this obviously stops when I screw back the plug in, is there something wrong with the pump ? its working but its struggling to hold its prime

[mark_Hershey]

I’m sitting here trying to hook one up and the plastic threads won’t accept any female threads I’ve tried, it goes in maybe 2 threads and that’s it. Uponor female adapters.

[bhcvancouver]

Don’t bother, very expensive, expensive to repair, that is if you can find a company that services them… stick with the traditional set ups……. I’ve had three grundfos pumps fail the scala 2 being the last one….

[sebastianmuller]

Whoever reduces the suction hose at all or that heavily should be fired on the spot!!!
Just watch the system in it's original state, that is how you should! do it. Big suction pipe, and then whatever you need on the pressure side.
It is embarassing that Grundfos is publishing this.