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Grundfos 99163972 ALPHA2 15-55SF/LC High-Efficiency Circulator Pump - Stainless Steel

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Price: $399.95
Item Number: 99163972
Manufacturer Name: Grundfos
Manufacturer Part No: ALPHA21555SFLC

Brochure & Specification Sheets

The Grundfos ALPHA2 is a high-efficiency, variable speed circulator fitted with electronically commutated motor. Designed for hot water recirculation systems.

It features a constant pressure control mode and a constant curve with each three settings. The factory default setting is AUTOADAPT which continuously adjusts the pump performance to the actual heat demand, i.e. the size of the system and the changing heat demand during the year. The function will find the setting that provides optimal comfort with minimal energy consumption. It contributes to fast, safe and easy commissioning.

The intuitive one-button operation and LED display makes the selection of the settings easy. The large LED display shows the current energy consumption in Watts and estimated flow in gallons per minute.

ALPHA2 materials and design are resistant to blockage from magnetite found in hydronic systems.

The robust startup enables ALPHA2 to continuously attempt to restart – indefinitely – in blocked rotor conditions.

ALPHA2 is complete with an integrated check-valve, and nut captures for flanges.

For power connection two options are available with either line cord or terminal box for conduit connections.
performance-curve

Specifications

Product name ALPHA2 15-55SF/LC
Product No. 99163972
EAN 5712607919085

Technical

Head max 18.05 ft
TF class 110
Approvals on nameplate ETL, FCC, NSF

Materials

Pump housing Stainless steel
EN 1.4308
Impeller Composite

Installation

Range of ambient temperature 32 .. 104 °F
Maximum operating pressure 145.04 psi
Type of connection GF
Pipe connection 1
Pressure stage PN 10
Port-to-port length 6 1/2 in

Liquid

Pumped liquid Water
Liquid temperature range 35.6 .. 230 °F
Selected liquid temperature 140 °F
Density 61.35 lb/ft³

Electrical data

Power input - P1 5 .. 45 W
Main frequency 60 Hz
Rated voltage 1 x 115 V
Maximum current consumption 0.1 .. 0.65 A
Enclosure class (IEC 34-5) IP42
Insulation class (IEC 85) F
Built-in motor protection NONE
Thermal protec ELEC

Controls

Pos term box 6H

Others

Net weight 5.93 lb
Gross weight 6.44 lb
Shipping volume 0.28 ft³
Sales region USA

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