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Table summarising changes
Lower Wobbe index (15°C, 1013 mbar) ( MJ/m 3 )
Slow ignition
Minimum fan speed (%)
Maximum central heating fan speed (%)
Maximum D.H.W fan speed (%)
Maximum heating power adjstment
Gas valve restrictor (ø)
Gas fl ow max/min
(15°C, 1013 mbar)
(nat - m3/h) (GPL - kg/h)
AUTO function
This is a function which enables the boiler to automatically adapt
its operation routine (the temperature of the heating elements) in
line with the outdoor conditions, in order to achieve and maintain
the requested room temperature conditions.
Depending on the peripheral units connected and the number
of zones controlled, the boiler adjusts its fl ow temperature
automatically.
The various corresponding parameters should therefore be set (see
adjustments menu).
To activate the function, press the A
Example 1:
Single zone system (high-temperature) with on/off room Thermostat:
In this case the following parameters must be set:
4 21 - Activation of temperature adjustment using sensors
- Select 1 = Basic temperature adjustment
2 44 - Boost Time (optional)
The wait time for the fl ow temperature increase in steps of
4°C may be set. The value varies according to the type of
system and installation.
If the Boost Time value = 00 the function is not activated.
Example 2:
Single zone system (high-temperature) with on/off room Thermostat
+ outdoor sensor:
In this case the following parameters must be set:
4 21 - Activation of temperature adjustment using sensors
- Select 3 = outdoor sensor only
4 22 - Temperature adjustment curve selection
- Select the relevant curve according to the type of system,
installation, heat insulation used in the building, etc.
4 23 - Perform a parallel curve shift if necessary, increasing or
decreasing the set-point temperature (this may also be
modifi ed by the user, using the heating temperature
adjustment knob, which, with the Auto function activated,
is used to shift the curve in a parallel manner).
max D.H.W
max C.H
min
button.
UTO
CLAS HE EVO SYSTEM
parameter
18
G20
G31
45,67 70,69 45,67 70,69 45,67 70,69 45,67 70,69
220
55
233
19
234
85
232
85
231
55
3.8
2.9
1.90
1.40
1.90
1.40
0.48
0.35
Example 3:
Single zone system (high-temperature) with REMOCON remote
Control + outdoor sensor
In this case the following parameters must be set:
4 21 - Activation of temperature adjustment using sensors
- select 4 = outdoor sensor + room sensor
4 22 - Temperature adjustment curve selection
- Select the relevant curve according to the type of system,
installation, heat insulation used in the building, etc
4 23 - Perform a parallel curve shift if necessary, increasing or
decreasing the set-point temperature. (This may also be
changed by the user by the encoder which, with the Auto
function activated, is used to shift the curve in a parallel
manner.)
4 24 - Infl uence of room sensor
- used to adjust the infl uence the room temperature has
on the calculation of the set-point fl ow temperature (20 =
maximum, 0 = minimum).
Note: See page 39 for details on accessing menus.
commissioning
CLAS HE EVO
24
30
G20
G31
G20
G31
55
60
18
18
76
78
91
86
55
60
5.0
3.6
5.7
4.3
2.75
2.02
3.17
2.33
2.33
1.71
2.96
2.17
0.58
0.43
0.69
0.50
38
G20
G31
60
19
78
93
60
6.6
5.0
4.02
2.95
3.28
2.41
0.79
0.58
37
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