English (GB)
9
5. Starting up the product
5.1 Before startup
Do not start the pump until the system has been filled with liquid
and vented. Make sure that the required minimum inlet pressure
is available at the pump inlet.
See sections
and
5.2 Venting the pump
Fig. 12
Venting the pump
The pump is self-venting. You do not have to vent the pump
before startup.
Air in the pump may cause noise. This noise ceases when the
pump has run for a few minutes.
You obtain quick venting of the pump by setting the pump to
speed III for a short period. How fast the pump is vented depends
on the system size and design.
When you have vented the pump, i.e. when the noise has
ceased, set the pump according to the recommendations. See
section
.
You cannot vent the system through the pump. See section
5.3 Venting the heating system
.
5.3 Venting the heating system
Fig. 13
Venting of the heating system
Vent the heating system as follows:
• via an air vent valve installed above the pump (1)
• via a pump housing with air separator (2).
In heating systems that often contain much air, we recommend
that you install pumps with pump housing with air separator, i.e.
ALPHAx XX-XX A.
When the heating system has been filled with liquid, do as
follows:
1. Open the air vent valve.
2. Set the pump to speed III.
3. Let the pump run for a short period
4. Set the pump according to the recommendations. See section
Repeat the procedure, if necessary.
5.4 First startup
• The light in the control panel shows that the power supply has
been switched on. See fig.
• Factory setting: AUTO
ADAPT
.
TM
05 307
5 091
2
The pump must not run dry.
10 Min.
1
2
TM
03
89
31
27
07
The pump must not run dry.
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10 Min.
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3
Содержание ALPHA SOLAR 15-75 130
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