Bosch BSS250E-2 Installation And User Manual page 35

Installation Precautions.
1. Power leads must be facing directly down, not sideways or upwards.
2. Must be in a safe environment for users to inspect.
3. Failure to mount sensors correctly can lead to a poorly controlled solar hot water system
with safety issues like overheating and over pressure damage to the plumbing and hot water
tank and freezing damage to the solar hot water collector.
Electrical Precautions.
1. All mains voltage electrical work to be carried out by a qualified electrician.
2. Always use within specified voltage and load ranges. Never use with damaged leads, plugs
or sockets.
3. Do not allow the sensor cables to come within 10mm of the high voltage connectors or
components inside the enclosure.
Note on Hot Water Cylinders with Over Temperature Cut-out.
Some standard electric element hot water tanks have an over-temperature cut-out fitted to
remove power in the event of a thermostat failure. The temperature this is set to can typically
range from 75°C to 95°C which is adequate for electric element heating safety. However in
solar hot water systems this temperature can be exceeded and the over-temperature cut-out
may activate turning the electric element off. The cut-out needs to be manually reset by a
qualified electrician. In these installations it may be necessary to modify the electrics in a
manner approved by the hot water tank manufacturer or set the topout adjustable value to a
temperature lower than the
over-temperature cut-out.
CAUTION: Dangerous Voltages may be present. The SolaStat has no
user serviceable parts.
Protective enclosure only to be opened by qualified personnel.
Remove ALL power sources before removing protective cover.
Warning:
SolaStat-Eco Mounting.
Where to mount the SolaStat-Eco.
1. Against a flat vertical surface with sufficient strength to hold the enclosure and any
additional weight from the plugs, sockets and cables.
2. Power leads must be facing directly down, not sideways or up.
3. Safe for users to inspect.
4. The buttons can be easily read and accessed.
5. Allow for cable runs, location of power outlets and lengths of wires.
Mounting the Sensors.
This is Critical to the Success of the Installation.
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