1.2 Notes
The symbols and notes below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol
indicates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in
malfunction or damage to the equipment.
Tips and advice that make the work easier.
1.3 Recommended safety equipment
We recommend the following safety equipment, when handling this
product.
Wear safety shoes.
Wear protective gloves.
Wear safety glasses.
2. Product introduction
2.1 Product description
ALPHA2 GO is a high-efficiency circulator pump fitted with an
electronically commutated motor and designed for circulating liquids
in heating and air conditioning systems.
The Grundfos GO app offers a range of digital features that simplify
the setup process for both new and replacement installations.
By using Grundfos GO, you can easily verify compatibility when
replacing integrated and stand-alone circulator pumps, including
replicating exact pump curves.
ALPHA2 GO is designed with intelligent controls modes:
• constant pressure
• proportional pressure
• constant flow
• constant curve.
Each mode has adjustable setpoints.
• The AUTOADAPT setting, available for constant and
proportional pressure, removes the need to manually select the
pump setpoint.
• The PWM input allows for precise control of the speed, better
enabling complete system optimization.
The toolless installer plug results in fast and easy electrical
connection.
The automatic self-venting ability and dry-running protection ensure
quiet operation and reliability of the pump.
The product features robust startup which reduces the risk of
blockages from dirt, magnetite and limescale build-up. In the
unlikely case of a blocked pump, the motor attempts to continuously
start at the highest possible torque, ensuring startup in tough
conditions.
The ceramic shaft and bearings experience minimal wear, resulting
in a longer lifespan and a reduced likelihood of noise in the system
due to increased bearing clearance from wear.
When the system air detection and venting feature detects air in the
system, the circulator pump pulsates to more effectively push air to
the closest air removal device.
Grundfos GO also provides the ability to conveniently fault-find the
system through the event log and historical trend data for flow,
head, estimated media temperature and on-cycle durations.
2.2 Intended use
The pump is designed for circulating liquids in the following:
• heat production: boilers, heat pumps and district heating
systems.
• distribution systems: space heating, for example, radiators,
underfloor-heating systems and air-conditioning.
This pump is only for indoor use.
Related information
2.4 Pumped liquids
5
English (GB)
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