Grundfos SCALA2 Data Sheet
General description
Grundfos SCALA2 is a fully integrated, self-priming, compact waterworks for pressure boosting in domestic applications. SCALA2 incorporates integrated speed control enabling the keeping of the perfect pressure at the taps, meaning that the pump performance will increase with increasing demand.
SCALA2 can be installed in three easy steps:
- Connect the pipes.
- Prime the pump.
- Plug the pump into the power outlet and the pump will start.
Grundfos SCALA2 has all the components necessary to ensure a comfortable pressure:
- intelligent controller
- integrated speed-controlled drive
- integrated pressure tank
- integrated sensors
- integrated non-return valve.
Features
- Adjustable constant pressure
- Low noise, < 47 dB(A) (in typical use)
- Compact
- Robust and reliable
- Easy installation and self-priming
- Dry-running protection
Applications
Grundfos SCALA2 is designed for pressure boosting in one- and two-family houses and apartments. We recommend SCALA2 for the following applications:
- pressure boosting of city mains water
- pressure boosting of water from roof tank
- pressure boosting of water from break tank
- pressure boosting of water from ground tank
- water supply from shallow wells (< 8 m).
Performance
SCALA2 is suitable for houses with up to three floors and eight tapping points. Accurate sizing of the pump can be based on the pump curve below and local norms and standards.
Pump Curve (Head vs. Flow Rate):
A graph showing head in meters [m] on the y-axis and flow rate in cubic meters per hour [m³/h] and liters per second [l/s] on the x-axis. Multiple curves are shown, representing different power inputs (P1 in Watts).
Control panel
The control panel features an indicator for pressure setting, buttons for pressure adjustment, an on/off button, a reset button, and alarm indicator lights. It also includes a Grundfos Eye indicator.
Exploded view
An exploded view diagram shows the various components of the SCALA2 pump, with numbered parts indicating their position.
Materials
| Pos. | Component name | Material |
|---|---|---|
| 1 | Combined pump and stator housing | Aluminium, Composite and EN 1.4301 / AISI 304 |
| 2 | Control box cover | Composite |
| 3 | Pump cover | Composite |
| 4 | Shaft seal | Carbon/Ceramic |
| 5 | Chamber stack (four stages) | Composite |
| 9 | Non-return valve, outlet | Composite |
| 10 | Pressure tank complete | EN 1.4301/AISI 304 |
| 11 | Connection part | Composite |
| 19 | Drain plug | Composite |
| 22 | Thread R 1" / NPT 1" | Composite |
| 24 | Non-return valve, inlet | Composite, Butyl and Composite |
Thermal protection
SCALA2 incorporates current- and temperature-dependent motor protection.
Technical data
| Type | Voltage [V] and Frequency [Hz] | P1 [W] | Imax. [A] | Thread | Plug | Product number |
|---|---|---|---|---|---|---|
| SCALA2 | 1 x 200-240 50/60 | 550 | 2.3-2.8 | R 1" | IEC type E & F, CEE7/7 | 98562862 |
| No plug (China) | 98562863 | |||||
| No plug | 98562865 | |||||
| 1 x 200-240 50/60 | 550 | 2.3-2.8 | R 1" | IEC type I, AS/NZS3112 | 98562866 | |
| IEC type G, BS1363 | 98562870 | |||||
| IEC type I, IRAM 2073 | 98562872 | |||||
| SCALA2 | 1 x 208-230 60 | 550 | 2.3-2.8 | NPT 1" | NEMA 6-15P | 98562817 |
| SCALA2 | 1 x 115 60 | 560 | 5-5.7 | NPT 1" | IEC type B, NEMA 5-15P | 98562818 |
Operating conditions
- Max. ambient temperature: 45 °C (113 °F).
- Max. liquid temperature: 55 °C (131 °F) for 1 x 200-240 V, 50 Hz models.
- Max. system pressure: 10 bar (145 PSI, 1 MPa).
- Max. inlet pressure: 6 bar (87 PSI, 0.6 MPa).
- Max. head: 45 m (147 feet).
- IP rating: X4D (outdoor installation).
- Pumped liquid: Clean, fresh water and chlorinated water < 300 ppm.
Markings and approvals
Safety approvals: CE, DE, UL
Drinking water approvals: WRAS, ACS
Dimensional sketch
| Type | H1 [inch] | W1 [inch] | H2 [inch] | H3 [inch] | L1 [inch] | Weight [kg] [lbs] |
|---|---|---|---|---|---|---|
| SCALA2 | 11.9 | 9.2 | 4.5 | 7.6 | 15.9 | 10 22 |
