Installation Requirements; Radio Frequency Radiation Exposure Information (For Canada And Us Only) (Only For Alpha); Optimal Installation And Operation; Mechanical Installation - Grundfos ALPHA Installation And Operating Instructions Manual

5. Installation requirements

5.1 Radio frequency radiation exposure information (for
Canada and US only) (only for ALPHA)
CAUTION
Radiation
Minor or moderate personal injury
‐
This equipment complies with FCC and ISED radiation
exposure limits set forth for an uncontrolled
environment. This equipment must be installed and
operated with a minimum distance of 20 cm (0.66 ft)
between the radiator and your body.

5.2 Optimal installation and operation

See below for information about the installation and setting of the
product:
• Slow down the flow to dissipate the heat in the zones faster.
• A small temperature difference between the inlet and outlet of
the boiler can cause inefficient boiler performance and in some
cases short cycling. Lowering the flow of the circulator can
prevent this from happening.
• By having a larger delta T going back to the boiler, the
boiler eventually r starts to condense. The efficiency of the
boiler and system increases, thereby saving money and wear
and tear on your system.
• In order to create a flow in a system, the pump needs to
neutralize the system head loss before it can create a flow in the
system.
• In case there is too little heat at the far end of the installation,
choose a higher setting on the pump or check the hydronic
balance of the system. An increase in the boiler supply
temperature could also be a solution.
• When mounting the pump, ensure that the shaft is in a
horizontal position to avoid air being trapped inside or bearings
being worn out too quickly.
• Make sure that you have the proper voltage and that the
wires are connected properly (black = phase, white =
neutral, green or bare copper = ground).
Related information
6.1 Mounting the product
7.1 Wiring the pump
8

6. Mechanical installation

WARNING
Electric shock
Death or serious personal injury
‐
A damaged product must be repaired or replaced by
Grundfos or a service workshop authorized by
Grundfos.
CAUTION
Crushing of feet
Minor or moderate personal injury
‐
Wear safety shoes when opening the box and
handling the product.
CAUTION
Sharp element
Minor or moderate personal injury
‐
Wear protective gloves.
The pump must always be installed with a horizontal
motor shaft within ± 5°.
The pump is a non-submersible pump.
Due to interference of the touchscreen, keep a distance of
minimum 5 mm from the front of the operating panel to all
conductive materials, for example, metal cabinets and
cables.

6.1 Mounting the product

The arrows on the pump housing indicate the flow direction through
the pump. See the figure below.
1. Fit the two gaskets supplied with the pump when you mount the
pump in the pipe.