northsolar.com.au 0435 016 869
N rth
Solar
“Solar Hot Water Solutions”
or valves. If the unit leaks and water enters the insulation in the tank,
the thermal efficiency will be dramatically reduced.
Vacuum tubes need to be properly inserted so they are sealed and not
leaking any water.
If a vacuum tube appears milky white, it signifies the tube has a crack
and needs replacing. This will only happen through misuse or by ac-
cidently damaging the tube. Once installed correctly the tubes will not
leak.
Filling the tank
IMPORTANT!
If not in the shade, ALWAYS make sure the tubes are covered with a
white sheet or similar prior to filling the tank.
If the tubes heat up prior to filling, there is a chance of one or more of
them cracking or exploding.
Filling two hours after sunset or before sunrise is the safest time.
REMEMBER internal tube temperatures in direct sunlight can reach 250
oC.
Tube maintanace
The vacuum tubes need minimal maintanance, however their efficiency
can decrease if they are covered by dirt or dust. It is recommended you
keep the tubes clean by washing them with a dishwashing liquid or soap
if they have been affected by seasonal conditions.
Water quality
Rain water
Clean rain water is highly recommended to fill and top up the main
tank.
