Ariston CLAS X - 2.2 SANITARY MODE: OPERATING LOGIC

Training manual CLAS X
Pag. 15 di 69
2.2 SANITARY MODE: OPERATING LOGIC
OPERATING
RANGE
36°C ÷ 60°C
By pushing the buttons “+” o “-“,you can see
on the display (for 4 seconds) the set
temperature
DEMAND FOR
DOMESTIC HOT
WATER
three-way valve
Heating
ON
Heating
OFF
Switch shaft
position
Shaft position is
OK
A demand for Domestic hot water, is detected
by the flow switch.
Now the boiler will be working on the
SANITARY mode. The display will show icon
with the set temperature for sanitary.
When the boiler is on stand-by the valve is
already on the SANITARY position.
If there is a demand while the boiler is operating
on HEATING mode, the three- way valve will be
switched on SANITARY.
During this passage the circulating device and
the burner remain on.
The outlet of the plate exchanger will be in
communication with the pump intake directed
towards the primary exchanger.
Pump ON
The pump (set on speed 3), intakes water
coming from the outlet of the secondary and
sends it to the primary exchanger
follows
Fan ON
The fan is supplied (sealed chamber models)
Air pressure switch
CONTROL
Air pressure switch enabling allows to pass to
the following phase.
If this doesn’t occur, after 20 seconds, the boiler
will stop for safety 6 P1 the Fan remains on
waiting for consent (sealed chamber models).
On the open chamber models instead a
thermostat control is performed (which
continues even while it is operating). If the Flue
Control thermostat is enabled there will be a
block shutdown 6 01 .