ATI di Mariani BT22 Serie Manuel D'utilisation page 9

UK – pag. 3/4
8. HYDRAULIC CONNECTIONS AND WATER QUALITY
To extend the life of the appliance, the quality of the water should be according to the following parameters, as required by
the European Directive 98/83 / EC (concerning the quality of water intended for human consumption):
• hardness between 15 and 50 ° F (in particular, where the water has undergone a softening or desalination treatment)
• chlorides between 25 and 100 mg / l
• PH between 6.5 and 9.5
• conductivity between 400 and 1500 µS / cm
Connect the appliance according to the following indications (FIG_8-1):
1. cold water inlet (1/2 ")
2. hot water outlet (1/2 ")
3. water delivery to the engine cooling circuit (1/2 ")
4. water return from the engine cooling circuit (1/2 ")
Minimum water inlet pressure: 70 kpa.
It is advisable to insulate the hot water pipes: this will avoid unnecessary waste of energy.
Assembly of the check / safety valve: the valve is supplied with the appliance and not assembled. It must be mounted on the
cold water inlet when installing the appliance. (S - FIG_8-1).
ATTENTION:
• DO NOT REPLACE THE SAFETY VALVE AND NON-RETURN VALVE SUPPLIED WITH THE APPLIANCE
WITH A NON-RETURN VALVE (CLAPET).
• CONNECTTHE WATER DISCHARGE OF THE VALVE TO A RUBBER HOSE WITH AN INTERNAL
DIAMETER OF 9.5 MM. THIS DRAIN PIPE MUST BE INSTALLED WITH A CONSTANT SLOPE DOWN IN A
PLACE PROTECTED FROM ICE.
• DURING THE COLD SEASON, IF THE BOILER IS NOT USED, THE BOILER MUST BE EMPTY. THIS TO
AVOID DAMAGE PRODUCED BY FROST.
9. ELECTRICAL CONNECTIONS
The appliance it must be connected to a single-phase power supply (please make sure to connect the correct voltage: 120 V
or 230 V according to the data label on the appliance) and to an effective earth connection.
THE MANUFACTURER DOES NOT ACCEPT LIABILITY FOR DAMAGES OR INJURIES RESULTING FROM
THE LACK OF EARTH CONNECTION OF THE EQUIPMENT
The applianceit is equipped with a power cable with Schuko plug. Connect the power cord in compliance with the wiring
regulations in force in the country where the appliance is installed. In case of replacement of the power supply cable, use only
a cable with the same characteristics (H05 VV-F - 3x1, 5 mmq). If it is not necessary to use the Schuko plug, it is possible to
cut the power cable and connect it to a different plug or directly to the power supply connection. Please be careful to connect
the polarities correctly (FIG_9-1):
Forecast a bipolar switch near the appliance to allow the isolation of the appliance.
ATTENTION: BEFORE WORKING ON THE THERMOSTAT, MAKE SURE THAT THE
ELECTRIC POWER SUPPLY IS COMPLETELY DISCONNECTED.
10. INSTRUCTIONS FOR USE
There electric resistance is equipped with a thermostat that has the following dual function:
1. temperature setting (T - FIG_9-1), cutting off the power supply to the heater element when the preset temperature is
reached (it is possible to adjust the thermostat between 0 ° C and 65 ° C, according to the user's needs).
2. safety, by cutting off the power supply to the heater element when, in the event of a malfunction of the appliance, the
temperature of the stored water reaches 83° C. To start the appliance again, a manual intervention is required (manual
reset) . In this case, follow these steps:
a) disconnect the power supply
b) to remove the protective cap of the heater element
c) press the reset button located on the thermostat (R - FIG_9-1)
d) put back the protective cover
e) restore the power supply
ATTENTION: CONNECT THE POWER SUPPLY TO THE ELECTRIC RESISTANCE ONLY
WHEN THE TANK IS FULL OF WATER. THE HEATING ELEMENT IS NOT SUITABLE FOR
DRY RUNNING
• L→ phase (brown cable)
• No. → neutral (blue cable)
ENGLISH
2-210-0335_libretto_BT_2021-10_testo_GB.docx