Grundfos Alpha2 26-99SU is a powerful 115V stainless variable speed circulator pump, designed to replace most high head & high-flow circulators on the market and suitable for a wide range of open and closed-loop applications, including hydronic & radiant floor heating, domestic hot water (DHW) and chilled water cooling. G150 union style connections (unions sold separately).
Cross-References:
Grundfos: UPS 26-99F
Taco: 0011-F4, VR3452
B&G: ecocirc XL
Features:
Push button allows to select between (8) consecutive operating modes: (3) proportional pressure curves, (1) proportional pressure AUTOAdapt (automatic system adjustment), (3) constant pressure curves and (1) constant pressure AUTOAdapt
AUTOAdapt (default factory setting) automatically adjusts the pump performance to the size of the system and load over time
Built-in removable check valve
High-efficiency ECM motor uses up to 85% less electricity
LED indicator lights for pump settings & alarms for easy set-up and diagnostics
Stainless steel body for open-loop or closed-loop applications
Permanent magnet motor technology with robust startup enables pump to restart indefinitely when rotor is locked
cULus Listed; NSF/ANSI 61 & 372, MH26400 Listed
Technical Specifications:
Casing: Stainless Steel
Circulator Pump Type: variable speed, high-efficiency w/ ECM motor and (8) modes - (4) proportional pressure (incl. AUTOAdapt) and (4) constant pressure (incl. AUTOAdapt)
Connections: G150 Union style
Circulator Height (Flange to Flange): 7-1/8"
Electrical Specs: 115V, 60 Hz, 120W max, 1.7 A max
Head Range: 0-42 ft
Flow Range: 0-26 GPM
Motor HorsePower: 1/6 HP
Operating Temperature Range: 14°F - 230°F
Max Operating Pressure:Â 150psi
Dimensions (Depth x Width x Height): 5.91" x 6.57" x 6.5"
Weight (lbs): 7.38 lbs
Warranty:
36 months from the date of manufacture / 30 months from the date of installation
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