ABOUT YOUR WATER HEATER
7
RAINWATER COLLECTION SYSTEM
If the solar collectors and solar pipe work are installed on a section of roof which is part of a rainwater runoff
collection system, then it is recommended this section of roof and its gutter be isolated from the rainwater
collection system.
The closed circuit fluid acts as an anti-freeze agent and rust inhibitor, is non-toxic to humans and is harmless
to the environment. However it does have an adverse effect on water stored in rainwater tanks. It will kill
microscopic algae typically present in rainwater tanks and cause an unpleasant odour to develop. This will
result in the rainwater tank having to be drained and cleaned.
If a rainwater tank does become contaminated with closed circuit fluid, then the following actions should be
undertaken by a qualified person. Additional actions may be necessary to return the water supply to a
consumable state.
Correct the leak or spillage.
Wash down the roof area where the spill or leak has occurred.
Flush out the gutters and down pipes.
Determine how the closed circuit fluid made its way into the rainwater tank. If the section of roof supporting
the solar water heater is not isolated from the rainwater collection system, then this should be remedied.
Empty the rainwater tank, and clean out all algae from the inside of the tank.
Refill the rainwater tank with fresh water.
Refer to “Rainwater Collection System” on page 20 for additional information.
TO TURN OFF THE WATER HEATER
If you plan to be away from home for a few nights, we suggest you leave the water heater switched on.
If it is necessary to turn off the water heater:
Switch off the electrical supply at the power outlet to the water heater.
Close the cold water isolation valve at the inlet to the water heater.
TO TURN ON THE WATER HEATER
Open the cold water isolation valve fully at the inlet to the water heater.
Open all of the hot water taps in the house (don’t forget the shower).
Air will be forced out of the taps.
Close each tap as water flows freely from it.
Plug in the water heater at the power outlet and switch on the electrical supply.
The power outlet must be switched on for the solar controls to operate and solar gain to be achieved.
GOING ON HOLIDAYS
It is not necessary to switch off the electrical supply at the power outlet to the water heater if you are going
away. However, if it is necessary to switch off the power to the water heater, refer to “To Turn Off The Water
Heater” on page 7.
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