The functioning and long-term operation of a solar heating for outdoor pool system often depend on the service staff who have to maintain the plant - normally the regular maintenance staff of the pool facility.
Good basic knowledge of the system technology is necessary for smooth running and maintenance.
Therefore the supplier and the contractor must go through the plant carefully and describe and explain the function of the various parts that need annual inspection.
A general rule when starting up a solar collector plant with an indirect system is that it should preferably be put into operation when it is not exposed to full sun.
On full solar radiation, the solar collectors become very hot, which can cause flow problems and, in the worst case, boiling (steam build-up).
As far as possible the solar loop should be filled in poor weather or when direct solar radiation is cut off by the horizon.
The solar collectors can, of course, be covered by tarpaulins if the area is not too large.
The solar loop should be pressure-tested before start-up to look for possible leaks.
The pressure test should be carried out with minimum solar radiation so that the pressure values are not affected by expansion due to temperature change.
Note that unglazed solar collectors must not be pressurized.
Tests for leaks must be carried out in some other way, for example by using the circulation pump when filling them with water.
Check the normal flow in the filter loop and solar collector loop, deaeration, leaks, flow direction in the solar collectors, possible drainage function in the solar loop and the operation of the control system on, or in connection with, start-up.
All solar heating systems should be handed over fully adjusted by the supplier, if the handover takes place during the operating season.
In indirect systems the antifreeze mixture and the possibility of air in the system must be checked.
The quality and the freezing point of the heat transfer fluid in the solar loop must be checked regularly.
It is also important to check the temperature and flows on both sides of the heat exchanger.
A solar heating plant for an outdoor pool with a direct solar heating system must be turned off during the winter to avoid frost damage.
The responsibility for this cannot be left open.
Drain-back systems (which drain automatically when the circulation pump stops) are advantageous here.
The pool filter system must be described carefully for the owner so that no misunderstanding can arise regarding the system's operation.
Good basic knowledge of the system technology is necessary for smooth running and maintenance.
Therefore the supplier and the contractor must go through the plant carefully and describe and explain the function of the various parts that need annual inspection.
A general rule when starting up a solar collector plant with an indirect system is that it should preferably be put into operation when it is not exposed to full sun.
On full solar radiation, the solar collectors become very hot, which can cause flow problems and, in the worst case, boiling (steam build-up).
As far as possible the solar loop should be filled in poor weather or when direct solar radiation is cut off by the horizon.
The solar collectors can, of course, be covered by tarpaulins if the area is not too large.
The solar loop should be pressure-tested before start-up to look for possible leaks.
The pressure test should be carried out with minimum solar radiation so that the pressure values are not affected by expansion due to temperature change.
Note that unglazed solar collectors must not be pressurized.
Tests for leaks must be carried out in some other way, for example by using the circulation pump when filling them with water.
Check the normal flow in the filter loop and solar collector loop, deaeration, leaks, flow direction in the solar collectors, possible drainage function in the solar loop and the operation of the control system on, or in connection with, start-up.
All solar heating systems should be handed over fully adjusted by the supplier, if the handover takes place during the operating season.
In indirect systems the antifreeze mixture and the possibility of air in the system must be checked.
The quality and the freezing point of the heat transfer fluid in the solar loop must be checked regularly.
It is also important to check the temperature and flows on both sides of the heat exchanger.
A solar heating plant for an outdoor pool with a direct solar heating system must be turned off during the winter to avoid frost damage.
The responsibility for this cannot be left open.
Drain-back systems (which drain automatically when the circulation pump stops) are advantageous here.
The pool filter system must be described carefully for the owner so that no misunderstanding can arise regarding the system's operation.
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