Technical information

5
It is important to ensure that the cold water main is capable of supplying the
increased demand which will be imposed on it. Hot and cold water are both
drawn off the same source of supply. Remember, there will not be a storage
tank to help compensate for variations in the demand on the system.
A minimum pressure of approximately 1.5 bar and 20 litres per minute is
required for satisfactory operation. 85% of UK dwellings have a mains
pressure above 2.0 bar.
NOTE: THE MAINS WATER SUPPLY MUST NOT EXCEED 16 BAR.
The cylinder should be left packed until it is time to install. When unpacking
the appliance follow the guidelines within the packaging and take care not to
damage the temperature and pressure relief valve.
The cylinder may be installed at any convenient position, as it is connected
to the mains cold water supply, it is equally effective on any floor, however,
consideration must be given to allow ease of access for maintenance
purposes.
However, do not install the unit in premises which may be subject to
freezing. Ensure that the floor load bearing strength is adequate to take the
weight of the cylinder when full of water (see
TABLE 1).
The ST50, ST80 and ST100 models are wall mounted. All other models are
free standing. These are supplied with feet which are attached to the heater
via self-tapping screws which are also supplied. All units must be installed in
the VERTICAL POSITION.
For maintenance purposes leave at least 500 mm free space in front of the
unit, for access.
2.5 COLD WATER SUPPLY
2.4 OVERALL DIMENSIONS
2.6 SITING AND FIXING