3. Receiving the product
3.1 Inspecting the product
Check that the product received is in accordance with the order.
Check that the voltage and frequency of the product match the
voltage and frequency of the installation site.
Related information
2.4.1 Nameplate
3.2 Scope of delivery
The box contains the following items:
• 1 Grundfos SCALA2 pump
• 1 quick guide
• 1 safety instructions booklet
• 1 quick guide for locking pin (only for versions with locking pin).
4. Installation requirements
4.1 Location
The pump can be installed indoors or outdoors, but it must not be
exposed to frost.
We recommend that you install the pump near a drain or in a drip
tray connected to a drain in order to lead away possible
condensation from cold surfaces.
The product must be installed in a well-ventilated room to ensure
cooling of its components.
The installation location must be protected from rain, humidity,
condensation, direct sunlight and dust.
The relative air humidity must not exceed 95 %.
Install the pump in such a way that no undesirable collat-
eral damage can arise due to leakage.
If the unlikely event of an internal leakage occurs, the liq-
uid will be drained through the bottom of the pump.
4.1.1 Minimum space
The pump requires a minimum space of 430 x 215 x 325 mm (17 x
8.5 x 12.8 inches).
Even though the pump does not require much space, we
recommend that you leave enough space for service and
maintenance access.
4.1.2
Installation of the product in a frosty environment
Protect the product from freezing if it is to be installed outdoors
where frost may occur.
4.2 System sizing
Make sure that the system in which the pump is incorpora-
ted is designed for the maximum pump pressure.
The pump is factory-set to 3 bar (44 psi) outlet pressure which can
be adjusted according to the system in which it is incorporated.
The tank precharge pressure is 1.25 bar (18 psi).
In case of suction lift of more than six metres, the pipe resistance
on the outlet side must be at least two metres water column or 3 psi
at any given flow in order to obtain optimum operation.
4.2.1 Maximum system pressure
Make sure that the system in which the pump is installed
is designed for the maximum pump pressure.
When installing a non-return valve in the plumbing sys-
tem, make sure that the system has an expansion tank at
the water heater and that the pressure-relief valve in the
water heater is plumbed to a drain. Carry out the installa-
tion in accordance with local regulations.
The maximum inlet pressure depends on the head at the actual
duty point. The sum of the inlet pressure and the head must not
exceed the maximum system pressure.
We recommend installing a pressure-relief valve to protect the
pump so that the outlet pressure does not exceed the maximum
system pressure.
5. Mechanical installation
DANGER
Electric shock
Death or serious personal injury
‐ Switch off the power supply before you start any work
on the product.Make sure that the power supply can-
not be switched on accidentally.
5.1 Positioning the product
Always mount the pump on the base plate in a horizontal position
with a maximum inclination angle of ± 5 °.
8
English (GB)
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