Grundfos ALPHA1 B User Manual

English (GB)
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6. Product introduction
6.1 Product description
Fig. 9 Pumped liquids, warnings and operating conditions
ALPHA1 pumps are a complete range of circulator pumps.
6.1.1 Model type
These installation and operating instructions cover ALPHA1
model B. The model type is stated on the packaging and
nameplate. See figs 10 and 11.
Fig. 10 Model type on the packaging
Fig. 11 Model type on the nameplate
6.2 Applications
The pump is designed for the circulation of water in heating
systems, domestic hot-water systems as well as air-conditioning
and cold-water systems.
Cold-water systems are defined as systems where the ambient
temperature is higher than the temperature of the pumped liquid.
The pump is the best choice for the following systems:
• underfloor heating systems
• one-pipe systems
• two-pipe systems.
The pump is suitable for the following:
• Systems with constant or variable flow rates where you want
to optimise the setting of the pump duty point.
• Systems with variable flow-pipe temperature.
TM06 9095 4317TM06 9106 4317
TM06 9103 4317

Grundfos ALPHA1 B Specifications

General

Pump Type	Circulator
Energy Efficiency Index (EEI)	≤ 0.20
Power Supply	230 V, 50/60 Hz
Liquid Temperature Range	2°C to 95°C
Protection Class	IP42
Max Operating Pressure	10 bar
Enclosure class	IP42
Insulation class	F
Flow Rate	3.5 m³/h
Connection Size	G 1 1/2
Port-to-port length	130 mm