DAYLIFF ULTRASUN UFS, Installation & Operating Manual, Page: 24 / 28

Thermostat
TRR 3*2, 5mm Feeding Cable
Electrical Heater
230V (3000W) 50Hz
BLUE
BROWN
YELLOW & GREEN
8. MAINTENANCE
It is recommended that the system is serviced bi annually by an accredited D&S service
provider.
The solar panels must be annually flushed by applying a high pressure reverse cleaning
water flow to loosen and remove deposits and sedimentation.
Check pipe insulation at least once a year, for any wear and tears and replace if necessary.
Make sure that the system is securely fastened to the roof structure at least once a year and
rectify if necessary.
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6. SYSTEM COMMISSIONING
a) Direct Systems
On installation or after service it is important that the system is primed. This is carried
out by first opening the incoming feed followed by the bleed cock and then observing
when all air is expended from the bleed outlet. Proper priming is important or else the
unit will not operate at full efficiency.
7. USAGE
It is important that the hot water availability is properly managed as solar energy
heating only occurs between the hours of 9:00am - 4:00pm. This effectively means
that hot water is available in the evening as any draw off will result in temperature
reduction from the replacement cold water. If hot water is required in the morning there
should either be no night time draw off or the booster heater should be used. Users
should plan hot water usage accordingly.