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12.2 Instructions to customer
Draw the hot water only after 2 days as the installed system needs minimum 2 days to generate
sufficient hot water in normal sunny days.
Certain parts of the system generate very high temperature. Never allow children to touch or play
around the system.
If the system is not intended to be used continuously for more than two days, it is mandatory to cover
the collector glass with thick cloth to avoid overheating.
Overheating of internal parts may cause severe damage to the system
12.2.1
System Usage
To get the best temperature of hot water from solar water heating systems, we recommend the following
Hot water should be used from the solar systems one time in a day, either in the Morning (Before 8:00AM)
OR in the Evening.
Withdrawal time should be as minimum as possible to avoid heat losses in the piping.
Do not withdraw more hot water than the rated capacity of the system every day.
13. Checks following commissioning and maintenance
Only carry out the final insulation work when the points in the check list have been ticked off
Checks
Solar hose secured with hose clamps
Mounting structure connection screws rigidly
fixed
No leakage of water through the connections
Air vent correctly installed
Mounting structure fixed on the roof with
concrete
System installed in the correct direction
Air vent in the solar circuit installed correctly
ISI approved Electric heater & connections
checked by electrician and proper earthing of
the equipment
14.
Maintenance
14.1
Installation of Systems
Once in a year drain the system by removing the cold water outlet pipe from the tank. Before draining ensure
that cold water inlet valve is closed. Draining intervals should be regular if water is hard.
Check the condition of the sacrificial anode periodically. Replace it if found corroded.
For 2-C systems makeup tank should be topped up with anti-freeze solutions or de-mineralized water at regular
intervals, if not system performance will come down.
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