Ariston CLAS NET One Installation And Servicing Manual

26 /
INSTALLATION INSTALLATION
Room Thermostat / Remote Clock Connection
To connect a room thermostat, it is necessary to:
1. Open the control panel
2. Loosen the cable clamp using a screwdriver and insert the
wires leading from the room thermostat
3. Connect the wires to the terminals as indicated in the gure
below, removing the link
4. If a remote time clock is to be tted, using a volt free switching
time clock connect the switching wires from the time clock
following points 1 - 3 above
5. If using an external time clock and room thermostat, these
must be connected in series as shown in diagram C,
6. Ensure that they are well connected and not subject to stress
when the control panel is closed
DO NOT CONNECT 240V TO ANY PERIPHERAL CONNECTIONS
Outdoor sensor connection
- Introduce the outdoor sensor wires
- Loosen the cable clamp using a screwdriver and insert the
wires leading from the outdoor sensor one at a time.
- Connect the wires to the terminals as indicated in the gure
below;
- Make sure that they are well connected and that they are
not subject to stress when the control panel lid is opened or
closed;
- Close the ap again, then replace the control panel cover
and the front casing.
- Refer to page 40 for setting the parameters when using the
outdoor sensor.
Note: wheN coNNectiNg the boiler to exterNal coNtrols, do
Not ruN 240V cables aNd cables for switchiNg circuits
(
which are low Voltage) together, use seperate cables to
preVeNt iNduced Voltage oN the low Voltage circuits.
Connector SE on PCB
Outdoor Sensor
Connector TA on PCB
(low voltage switching)
Connector TA on PCB
(low voltage switching)
Connector TA on PCB
(low voltage switching)
Cylinder connection (CLAS SYSTEM ONE)
The boiler can be connected to a central heating system
that uses two zone valves to allow connection to an indirect
storage cylinder.
There are two wiring diagrams shown, one for the connection
to an Unvented Cylinder and one for connection to an open
vented cylinder.
In both cases the boiler connection is shown as TA1.
When connecting the boiler to an external cylinder do not run
240V cables and the cables for the TA1 together, use separate
cables to prevent induced voltage on the low voltage
switching circuit.
Note: the use of a ‘y’ plaN system is Not possible with the
clas system oNe boiler due to the low Voltage switchiNg of
the appliaNce uNless suitable relay coNtrols are used.
Important!!
Ensure that a balancing valve is tted on the cylinder return
and balanced correctly at commissioning stage.
(see p.25)

Ariston CLAS NET One Specifications

General

Brand	Ariston
Model	CLAS NET One
Category	Boiler
Language	English