56
DRAINING THE SOLAR COLLECTORS
To drain the solar collectors and the solar hot and solar cold pipes:
•
Cover the solar collectors with an opaque material.
•
Open a hot water tap and allow the water to run for five (5) minutes immediately prior to draining the solar
collectors.
This will assist in the transfer of any high temperature water in the solar collectors to the solar storage
tank.
•
Close the hot water tap.
•
Turn off the water heater (refer to
“To Turn Off The Water Heater”
on page 53).
Warning:
Exercise care, as water discharged from the solar collectors may be of a very high
temperature.
•
Using a pair of pliers or other appropriate tool, open the service valve fitted at the solar hot water inlet
(from collector) of the solar storage tank (refer to
on page 53).
•
Undo the compression fitting on the union located to the right of the solar control unit, and disconnect the
solar cold pipe.
Water will now drain from the solar collectors and the solar hot and solar cold pipes.
•
When water stops flowing from the solar hot and solar cold pipes, reconnect the solar cold pipe to the
circulator and tighten the compression fitting.
•
Close the service valve.
DRAINING THE SOLAR STORAGE TANK
To drain the solar storage tank:
•
Cover the solar collectors with an opaque material.
•
Open a hot water tap and allow the water to run for five (5) minutes immediately prior to draining the solar
storage tank.
This will assist in the transfer of any high temperature water in the solar collectors to the solar storage
tank.
•
Close the hot water tap.
•
Turn off the water heater (refer to
“To Turn Off The Water Heater”
on page 53).
Warning:
Exercise care, as water discharged from the solar storage tank may be of a very high
temperature.
•
Operate the relief valve lever - do not let the lever snap back or you will damage the valve seat.
It is very
important the lever is raised and lowered gently
.
Operating the lever will release the pressure in the water heater.
•
Undo the union at the cold water inlet and attach a hose.
Let the other end of the hose go to a drain.
•
Open the relief valve by holding the lever in the raised position.
This will let air into the solar storage tank and allow the water to drain through the hose.
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