Ariston CLAS HE SYSTEM 24 Installation And Servicing Instructions page 36

settings - adjustment - problem identification menus
description
2 BOILER PARAMETER SETTING
2 1 Entering access code
2 2 BOILER GENERAL SETTING
2 2 0 Slow ignition
2 2 1 Minimum ambient temperature for
antifreeze activation
2 2 2 NOT PRESENT
2 2 3 Underfloor thermostat or zone  ambient
thermostat selection
2 2 4 Mechanical timer connection authorisation 0 = Absent
2 2 5 Heating ignition delay
2 2 6 NOT PRESENT
2 2 7 Flue gas sensor authorisation
CANNOT BE MODIFIED
2 2 8 Boiler Version
CANNOT BE MODIFIED
2 3 BOILER PARAMETER - PART 1
2 3 0 NOT PRESENT
2 3 1 Maximum heating power setting
2 3 2 Domestic hot water maximum RPM
percentage
CANNOT BE MODIFIED
2 3 3 Minimum RPM percentage
CANNOT BE MODIFIED
2 3 4 Heating maximum RPM percentage
CANNOT BE MODIFIED
2 3 5 Selection of ignition delay type when
heating
2 3 6 Ignition delay when heating timer setting
2 3 7 Post-circulation when heating
2 3 8 Circulation pump operating type
2 3 9 Setting the Delta T
Circulation pump modulation
These parameters allow the flow and return temperature difference to be set, which determines whether the circulation
pump switches from low to high speed
E.g.: param. 39 = 0 and ∆T > 0°C- the circulation pump runs at high speed. If ∆T < 0 - °C the circulation pump runs at
low speed. The minimum waiting time for changing speed is 5 minutes.
36
value
0 to 99
from  to 10 °C
0 = Floor safety thermostat
1 = Zone  ambient thermostat
1 = Present
0 = Deactivated
1 = 10 seconds
 = 90 seconds
3 = 10 seconds
0 = Deactivated
1 = Activated
0 to 5
0 to 99
0 to 99
0 to 99
0 to 99
0 = Manual
1 = automatic
from 0 to 7 minutes
from 0 to 15 minutes or continuous
0 = Low Speed
1 = High Speed
 = Modulating
from 10 to 30 °C
 press the programming "+" button to select 34
and press the m button
enu
60 RESERVED FOR SAT
5 Activated only with the modulating peripheral
device (optional)
0
0 to be modified if mechanical timer is present
(optional)
0 Activated only with zone  interface (optional)
0 RESERVED FOR TECHNICAL ASSISTANCE Only if
the PCB is changed
0 RESERVED FOR TECHNICAL ASSISTANCE Only if
the PCB is changed
see the "gas setting" table, information on page
30
RESERVED FOR TECHNICAL ASSISTANCE Only if
the gas or PCB is changed
see "gas setting" table
1 see section on "gas setting"
3
3

0 to be set with operation of the circulation pump
in modulating mode