• the whole system should be checked for leaks.
• the storage cylinder and collectors should be checked to ensure that they sit properly in place
• Once these checks have been carried out and there appears to be no reason to drain the storage cylinder, the
cardboard cover(s) can be removed from the collectors.
• if it is a sunny day, the hot pipe leading from the collectors to the storage cylinder should be checked (by
hand) to ensure that it is heating up; it should be hotter than the cold line from the storage cylinder to the col-
lectors.
• The operation of the pump can be tested by partially immersing the thermocouple sensor that goes into the
top header of the collector into hot water to see if it causes the pump to switch on. If it is cooled, the pump
should switch off. If the sensor is placed under very cold conditions (an ice block might be cold enough to simu-
late frosty conditions) the pump should again come on to provide frost protection. Frost protection commences
through operation of the pump at 4 degrees celcius.
• the sensor associated with the bottom of the storage cylinder can similarly be tested; if it is heated it should
turn the pump off.
• the manual override knobs on the TPR (temperature pressure relief) on the storage cylinder and ECR (pres-
sure relief) valve on the cold supply of a mains pressure unit should be SLOWLY checked to see that each dis-
charges normally and does not drip at the completion of the test.
• Check that the element operates. The power indicated by the meter, when comparing the element turned on
and turned off, shall confirm this.
• Ensure the thermocouple leads are fully inserted (maximum distance in) into the receptacles in the tank and
the collector. Seal the thermocouple sensors into the tank and the collector array using a suitable waterproof
sealant.
• The system should now be operational and fully functional.
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Summary of Contents for OZS251E
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