OVERVIEW

Official designation: GRUNDFOS UPA 15-90 (UPA Series, Water Booster Pump)

Role/Application: This compact circulator pump with an integrated flow switch provides supplemental pressure boosting for clean, potable domestic hot and cold water supplies in residential and light commercial open systems.

KEY SPECS SUMMARY

Power: 1 x 230 V, 50 Hz, 120 W max

Interfaces / Ports: G 3/4 inch BSPM connections

Indicators: Three position switch OFF/AUTO/MANUAL

Operating Temp: 2 degrees C to 95 degrees C (liquid)

Platform / Compatibility: Cast iron housing, canned-rotor design

Limit: 9.0 meters max head, 1.4 cubic meters per hour max flow

Lifecycle: Replacement can be found via the Grundfos Product Center tool

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the maximum system pressure rating this booster pump is designed to withstand?

A: The maximum system pressure this pump can handle is 10 bar (PN 10).

Wiring & Installation:

Q: What minimum gravity flow is required for the automatic mode (AUTO) to activate the pump?

A: A gravity flow of 90 to 120 liters per hour (1.5 to 2.0 liters per minute) is required to start the pump.

Troubleshooting & Compatibility:

Q: What is the typical pressure increase provided by the UPA 15-90 booster pump?

A: The pump typically adds between 0.5 bar and 0.75 bar of pressure.

Replacement & Upgrades:

Q: What is the standard port-to-port length of the UPA 15-90 for replacement sizing?

A: The standard port-to-port installation length for this model is 160 mm.