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5.10 - System sensors
identification and positioning
WARNING! For the system to work correctly, all
the sensors are to be inserted into the holding cases
provided as far as possible.
The storage tank sensor is supplied already in its housing.
Proceed with connecting the storage tank sensor into the hot
water heater’s connection board, following the installation
manual provided with the hot water heater.
WARNING !!! The holding cases are equipped
with a spring to receive up to three temperature sensor.
5 - INSTALLATION
5.11 - Domestic hot and cold
water
WARNING!
If the hardness of the water is higher
than 20°F (200 mg/l), a water softener must be installed
on the cold water inlet.
WARNING!
If the hot water heater has to work
at temperatures above 60°C, the hardness of the water
must be less than 15°F (150 mg/l).
WARNING!
The water must not be softened
to values lower than 5°F (50 mg/l). At these values it
becomes acidic and can corrode parts of the hot water
heater, shortening its life.
WARNING!
Install a filter with mesh no wider
than 0.5 mm² in the domestic cold water inlet.
WARNING!
The domestic hot water circuit must
be made with materials resistant to temperatures of
at least 95°C and a pressure of 10 bar. Otherwise (e.g.
with plastic piping), the system must be fitted with the
relevant protection and safety devices.
In Figures 3-1, 3-2, 3-3 and 3-4, you can verify the position
of the domestic hot and cold water fittings.
Insert a closing cock before the cold water inlet, useful for
maintenance work.
