Grundfos SCALA2

Product Description

The GRUNDFOS SCALA2 is a compact booster pump that provides constant water pressure to all taps. It comprises a pump, motor, tank, and non-return valve in a single, easy-to-install unit. Its intelligent control system adjusts performance based on demand, and its integrated motor allows for silent operation. Users benefit from maximum comfort with optimal electrical consumption.

Sizing and selection have never been simpler. The SCALA2 supports all pressure boosting needs in residential buildings up to 3 stories and 8 taps. For applications beyond this, the CMBE booster is recommended.

Applications

Self-priming booster pump with integrated converter for domestic water supply:

• Private homes
• Country houses
• Farms
• Gardens

Suitable for drinking water and rainwater.

Construction

• Pump and stator housing combined in aluminum and composite.
• Integrated butyl diaphragm tank (0.65 L - Pre-charge: 1.25 bar).
• Permanent magnet motor and integrated frequency converter.
• Constant pressure adjustable from 1.5 to 5.5 bar in 0.5 bar steps.
• Mechanical seal: carbon/ceramic.
• Non-return valves on discharge and suction.
• 2 m electrical cable with plug.

Technical Specifications

Electrical Characteristics

7 Integrated Protections

Visible on the control panel:

• Grundfos Eye / operating status indicator
• Pressure setting dial
• Indicator lights for alarms / protections

Protection Details:

1. Power supply failure.
2. Pump blocked, mechanical seal seized.
3. Leak in the installation (cycling).
4. Dry running or lack of water.
5. Max pressure exceeded or setpoint cannot be reached.
6. Max continuous running time exceeded (if function activated).
7. Temperature outside the supported min/max ranges.

Product Advantages

• Constant pressure, constant comfort: The automatic variable speed of the SCALA2 maintains constant pressure at all draw-off points, adjusting performance automatically based on demand.
• Compact and easy to install: 1. Connect pipes. 2. Prime the booster. 3. Connect the plug to the mains. 4. Select the desired constant pressure level.
• Easy to select: A single model is dedicated to domestic applications.
• Self-priming: Capable of drawing water from a depth of 8 m in less than 5 minutes.
• High levels of integrated protections: Ensures safety by automatically stopping the pump in cases of dry running, lack of water, extreme temperatures, blocked shaft, electrical overload, or excessively high pressure.
• Autonomous: Features automatic reset.
• Silence and durability: Quiet operation (47 dB(A)) due to its hydraulic design, permanent magnet motor, and liquid cooling. Ideal for indoor installation, with a robust design for outdoor use.

Accessory Selection

Suction from a well

Diagram shows:

• Suction kit (or foot valve) [Pos. 5 / Pos. 13]
• Isolation valve (not supplied) [Pos. a]
• Filter for sand/gravel presence (not supplied) [Pos. b]

Boosting from the distribution network

Diagram shows:

• Pressure gauge [Pos. 10]
• Isolation valve (not supplied) [Pos. a]
• Pressure reducer for suction (not supplied) if pressure > 6 bar. Pressure reducer if the installation cannot withstand pressure > 6 bar. [Pos. c]
• Note: A check valve is mandatory depending on local regulations (not shown in diagram).

Accessory Reference Table

Selection is indicative; Grundfos accepts no liability. Accessory article reference: see pages 102 to 109.

For more installation details, visit: http://qr.grundfos.com/i/scala2install

Extracted from the professional price list 2018.