Giona Holding 120 Serie Instrucciones De Instalación, Uso Y Mantenimiento página 9

Please note that some water softener are comparable to non return valves and therefore their
installation requires also the installation of an adequate expansion vessel (see fig. 2).
The appliance is designed to be connected to a re-circulation piping: (Z) this piping must be
insulated.
It is necessary to install a pump with a timer or a minimum contact thermostat in order to make
re-circulation work, so that it is activated once the recirculation water is cold.
If the connection is not used, close it with a watertight plug.
Inlet and outlet piping must be connected to the designed positions of the boiler.
3) OPERATING INSTRUCTIONS
a) Switching on
Once you have installed the appliance, fill it with sanitary and with heating water as follows:

Fill the coil with heating water and vent the plant.

Fill the appliance with sanitary water through the cold water inlet connection and vent the
plant by opening a hot water drawing point

Install the thermostatic device on the proper place (see figure 1)

Start the central heating boiler
b) Filling of the coil
The exchanger coil is connected to the central heating circuit; therefore to grant fluid circulation
inside the coil it is necessary to check that the heating plant pressure is enough.
N.B: Check the central heating boiler instruction manual in order to check its working process.
c) Filling of the unit
In order to fill the appliance, it is necessary to provide the plant with a charge cock of the sanitary
water mains supply.
Open this tap and vent the circuit by opening a drawing cock.
d) Emptying the appliance
In order to empty the unit, close the charge clock, connect a flexible pipe to the drain connection
and put the other end of it on a drain.
Open a drawing off point and let water flow, then open the drain connection and complete the
emptying procedure.
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