Commissioning - Bosch BSS250E-2 Installation And User Manual

To avoid cavitation noise and damage to the pump bearing at high temperatures, the following
minimum pressure is required at the pump suction port:
Liquid temperature 65°c
Minimum inlet water pressure 2.8m head
0.27 bar
CONNECTIONS
15mm female BSP.

COMMISSIONING

TO FILL AND TURN ON THE WATER SUPPLY TO THE SYSTEM
The power supply to the solar storage tank and solar control unit MUST NOT be switched on
until the water heater is filled with water.
Turn on the water supply to the system.
Open all of the hot water taps in the house in turn, allowing any air in the lines out. It is
important that this is done before the heater has had time to warm up, as the air bubbles can
cause spurting from the taps. Also check the Solar piping for leaks, leaks will significantly
decrease the performance of the heater.
The solar panels must only be filled when they are cold, so it is important to ensure that the
panels are fully covered for a suitable time beforehand. Filling hot panels may cause injury by
scalding. Loosen the fitting on top of the solar panel return pipe to the solar storage tank and
then turn on the mains cold water supply. Cover the loosened fitting with a cloth to prevent
water spraying from the fitting. Allow water to flow from the loosened fitting until a steady flow
free of spurting is achieved and all air is displaced. Re-tighten the fitting. Allow the system to
pressurise. Check for any leaks.
Refer to each individual component for commissioning instructions.
TO TURN OFF THE WATER HEATER
If it is necessary to turn off the water heater on completion of the installation, such as
on a building site or where the premise is vacant, then:
Close the cold water isolation valve at the inlet to the water heater.
switch off the electrical supply at the circuit breaker to the storage tank.
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