User Manual

PowerOptimal Elon® 100 User Manual
Version date: 2022/06/28
Page 8 of 24
Version number: 2.15
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property and/or information contained herein remain vested in PowerOptimal, except if otherwise agreed in
writing.
2.3 Control dial settings
Dial
Setting
Time on
Mains*
Time on
Solar*
24-Hour
Clock
MAINS
ONLY
24 hr
Never
1
12:00
to
08:00
08:00
to
12:00
2
14:30
to
05:30
05:30
to
14:30
3
17:00
to
03:00
03:00
to
17:00
SOLAR
ONLY
Never
24 hr
* Times are approximate – will vary slightly with season and location
Think of the water in your geyser as a battery that can store energy in the form of hot water. To
charge the battery (or heat the water) with solar energy during the day, it must cool down a bit in
the morning. In other words, the water must be below its setpoint temperature by the time the
sun comes up.
The Elon® achieves this by switching off mains power at some time in the morning, while you are
still using hot water from the geyser. The table above indicates approximate switching times for
different dial settings.
When the control dial is set to "MAINS ONLY", your geyser will use mains power 24 hours a day (in
other words, it will never switch to solar power). The geyser will behave the same as any standard
geyser. This setting is sometimes useful when you are using a lot of hot water or you have a few
very cloudy days in a row, or you have a lot of guests.
If you only use hot water early morning and in the evenings, you can set it close to “Solar only” to
benefit from a longer solar energy heating period (and save more money).
When the control dial is set to “SOLAR ONLY”, the Elon® 100 will ONLY use solar power to heat
water.