EcoSolar Energy Conscious Design Limited
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button on the EcoSolar “One Shot” controller. This controller will heat the water and automatically
turn off the heating once the water is up to temperature, the user will not need to turn it off. The over-
ride switch on the “One Shot” controller turns on and keeps on the electric elements. Under normal
use the boost operation should suffice, however, if there is significant hot water usage the user may
want to consider using the over-ride button.
In cylinders with multiple elements, with the “One Shot” connected to the top element, using the
boost feature will heat only the top portion of the cylinder, which may be sufficient for normal usage.
Using the over-ride feature will maintain the water in the top of the cylinder at the set point
temperature, however this will consume significant energy and savings will be reduced.
Legionella Control
Unless the hot water cylinder is being heated regularly to greater than 60
O
C, there is a risk of Legionella
establishing itself in the hot water cylinder. In order to minimize this risk the water should be heated to
60
O
C for 6 hours once a week. This function can be manually managed or EcoSolar are able to supply
controllers or timers that take care of this function for you.
If you are managing this yourself we recommend that the water is heated at the same time each week
this way the management will hopefully become habitual. If the cylinder has two immersion heaters
the lower one should be initiated to maximise the amount of water heated.
Please note that the above will limit but not prevent Legionella from establishing its self in the hot
water cylinder. The shower head is most at risk most pipework is also a risk area. All the pipework
should be regularly flushed to limit the establishment of Legionella this is the case on all hot water
systems, more so where tempering valves are installed as the water downstream of the tempering valve
only reaches 45
O
C which is an optimum temperature for Legionella growth.
