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63
14. t
label will stop flashing.
la
15.
The
If the closed circuit fluid does not drain back completely to this level, then
there is a continuous fall of at least 5° (1 in 10 grade) in the solar pipe
work from the solar collectors to the solar storage tank.
the solar collectors have an inclination of not less than 10°.
(refer to “Solar Collector Location” on page 31)
the connectors on the inlet and outlet of the collectors are orientated
downwards to ensure complete drain back of the closed circuit fluid
from the solar collectors.
If necessary, rectify the:
solar pipe work if there is either insufficient fall or not a continuous fall
in the pipe work.
solar collector inclination if it is less than 10°.
orientation of the connectors downwards if they are not orientated
correctly.
Recheck the drain back function of the solar circuit by repeating step 8 and
recommencing this procedure from step 10.
Drain Back Function
Switch off the electrical supply at
tank.
The red LED on the solar monitor
The pump will deactivate.
he isolating switch to the solar storage
The closed circuit fluid will drain back down to the heat exchanger and the
level of the closed circuit fluid in the clear hose will rise.
Wait five (5) minutes to allow the drain back of the closed circuit fluid in the
so r circuit.
Note the level of the closed circuit fluid in the fluid level hose.
closed circuit fluid should drain back to the original static level.
check: