Grundfos SCALA1 TWIN 5-55 High Flow On Demand Booster Pump System w/ Bluetooth

100.00 LBS
$75.00 (Fixed Shipping Cost)
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Product Overview

Note 1: Fixed Shipping Rate does not apply to Hawaii or Alaska.

Note 2: Comes in 3 separate boxes. Assembly required. See 2nd video (below) for assembly example, along with Quick Setup Guide (document link below).

Grundfos SCALA1 is an all-in-one pressure boosting unit with a high-efficiency motor and hydraulics with low noise operation for domestic water supply and also light commercial applications.

Built-in Bluetooth communication gives you complete control over the pump using the Grundfos GO REMOTE, also for twin pump operation.
This means that installation and commissioning has never been easier. The Grundfos GO REMOTE app also lets you see alarm status and get easy pump diagnostics.
You can create and email reports onsite and access hard-to-reach installations remotely from the app.
Built-in multi-pump/booster technology enables twin pump connection with joint pump control in either duty/assist or duty/standby mode.
Online configuration is done easily using the Grundfos GO REMOTE app, where you can also adjust the alternation setup.

SCALA1 5-55  (115V or 230V)

(A small, 2 - 4 gallon pressure tank is recommended in applications where a water heater is in place to allow for thermal expansion in the line. A small pressure tank will also prevent cycling when a leak is present in the piping, extending the life of the pump.)

Product number 99631754

Suitable for
  • Plumbing: Pressure Boosting
  • Residential groundwater intake
  • Residential water pressure boosting
  • Residential rainwater harvesting

The Grundfos SCALA1 is a fully integrated, all-in-one, self-priming, compact waterworks designed for pressure boosting in domestic and light-commercial applications, such as garden irrigation or pressure boosting to one and two family houses and apartments.


Product name SCALA1 5-55
Product No. 99631754
EAN 5713832222070


Rated flow 23.2 US GPM
Rated head 82.03 ft
Maximum head 180.5 ft
Primary shaft seal BVBP
Approvals for drinking water CSA DW
Curve tolerance ISO9906:2012 3B
Model A
Start pressure 40.61 psi


Pump housing Composite
Impeller Composite


Range of ambient temperature 32 .. 131 °F
Maximum operating pressure 116 psi
Maximum permissible inlet pressure 29 psi
Type of inlet connection NPT(M)
Type of outlet connection NPT(M)
Size of suction port 1 inch
Size of outlet port 1 inch
Pressure rating for connection PN 8


Pumped liquid Water
Liquid temperature range 32 .. 113 °F
Selected liquid temperature 68 °F
Density 62.29 lb/ft³

Electrical data

Length of power cable 4.92 ft
P1 max. 1250 W
Rated power - P2 1.15 HP
Main frequency 60 Hz
Rated voltage 1 x 115 V or 1x 220 V
Maximum current consumption 11.6 A
Enclosure class (IEC 34-5) X4D
Insulation class (IEC 85) F
Power plug Type B (NEMA 5-15)
  US plug 115V or 220V


SCALA1 5-55 TWIN Performance Curve