Ariston CLAS B 28 FF Installation And Service Instructions Manual page 38

installation
WARNING
Before performing any work on the boiler, fi rst disconnect it
from the electrical power supply using the external bipolar
switch.
Electrical connections
For increased safety, ask a qualifi ed technician to perform a thorough
check of the electrical system.
The manufacturer is not responsible for any damage caused by the
lack of a suitable earthing system or by the malfunctioning of the
electricity mains supply.
Make sure that the system is able to withstand the maximum power
absorbed by the boiler (this is indicated on the appliance data plate).
Check that the section of the wires is suitable and is not less 0,75
mm 2
The appliance must be connected to an effi ecient earthing system if
it is to operate correctly.
The power supply cable must be connected to a 230V-50Hz network,
where the L-N poles and the earth connection are all respected.
In the event that the power supply cable must be changed, replace
it with one with the same specifi cations.
140
Power supply cable
Important!
Connection to the electricity mains supply must be performed
using a fi xed connection (not with a mobile plug) and a bipolar
switch with a minimum contact opening of 3 mm must be fi tted.
The use of multiplugs, extension leads or adaptors is strictly
prohibited.
It is strictly forbidden to use the piping from the hydraulic, heating
and gas systems for the appliance earthing connection.
The boiler is not protected against the eff ects caused by lightning. If
the mains fuses need to be replaced, use 2A rapid fuses.
Remote Control
CLIMA MANAGER
(optional)
38
120
H05V2V2-F
External sensor (Optional)
Room Thermostat 2 (Optional)
Room Thermostat 1 (Optional)
1 2
Peripheral unit connection
To access peripheral unit connections carry out the following steps:
- Disconnect the boiler from the power supply
- Open the peripherical box connection located below the boiler
The terminal board may be accessed in order to connect:
Bus = Remote Control CLIMA MANAGER
TA1 = Zone 1 Room Thermostat
TA2 = Zone 2 Room Thermostat/
SE = External sensor
Room thermostat connection
- Introduce the thermostat wire
- connect the wires to the terminal TA1 as indicated in the fi gure,
removing the jumper
-
make sure that they are well connected and that they are not subject
to traction.
5 6
3 4
L N
TA2
BUS TA1 SE
FLOOR
1 2 3 4 5 6