Grundfos SCALA2 3-45 Domestic Utility Water Booster System

The Grundfos SCALA2 3-45 Domestic Utility Water Booster System (Model 93013251) is an all-in-one, fully integrated constant pressure variable-speed pump designed to eliminate fluctuating household water volume issues. Packed into a sleek, ultra-compact composite layout, this plug-and-pump system houses the booster pump, permanent magnet motor, micro-expansion tank, pressure sensor, controller, and non-return safety valve arrays inside a single water-cooled structure.

Key Performance Features:

• Intelligent Demand Sensing Control: Continually analyzes inline water output and instantly commands the integrated variable frequency drive (VFD) to adjust motor speed. This provides a perfectly steady, constant 55 PSI pressure profile across up to 8 residential fixtures simultaneously.
• Whisper-Quiet Operation: Utilizes advanced water-cooling logic that completely eliminates the need for an external mechanical cooling fan. This design reduces typical operating noise down to an incredibly low 47 dB(A), making it as quiet as a modern dishwasher.
• Comprehensive Smart System Safeguards: Engineered with built-in dry-run safety lockouts, automatic restart retry logic, anti-cycling drop detection (to catch dripping line leaks), and integrated internal thermal motor protection.

Residential Implementation: Capable of self-priming from depths up to 26 feet in under 5 minutes, the SCALA2 3-45 transitions cleanly across multi-story municipal main boosting, open-air rainwater collection cisterns, or shallow groundwater wells.