42
settings - adjustment - problem identifi cation menus
menu
sub
-menu
P
a
rameter
Description
value
default setting
2
4
BOILER PARAMETER - PART 2
2
4
3
Post-ventilation after heating request
0 = OFF
1 = ON
0
2
4
4
Time delay after heating temperature
increase
from 0 to 60
(minutes)
16
Activated only with thermostat On/
Off and heating control activated
(parameter 421 - 521 - 621 = 01)
This parameter allows the time delay to be set before automatic increase of the fl ow
temperature calculated in increments of 4°C (max 12°C). If this parameter retains the value
00, this function is not active.
2
4
5
<Not Available>
2
4
6
<Not Available>
2
4
7
Device indicator for heating circuit pressure 0 = temperature sensor only
1 = pressure switch at minimum
2 = pressure sensor
1
RESERVED FOR TECHNICAL
ASSISTANCE
Only if the PCB is changed
2
4
8
<Not Available>
2
4
9
External temperatura correction
from -3 to +3 (°C)
0
Only active with external sensor
connected
2
5
DOMESTIC HOT WATER PARAMETER
2
5
0
COMFORT function
CLAS HE EVO
0 = deactivated
1 = timed
2 = always on
0
Timer = activated for 30 minutes
after domestic hot water draw-off
The appliance allows the hot water heating comfort to be increased via the “COMFORT”
function.
This function keeps the secondary exchanger temperature stable when the boiler is not in
use. When the function is active, the display shows COMFORT
Note: this function can be activated and deactivated by pressing the COMFORT button
2
5
1
Comfort Anti-cycling Time
CLAS HE EVO
from 0 to 120 (minutes)
0
2
5
2
Hot water fl ow delay
CLAS HE EVO
from 5 to 200 (0.5 to 20 seconds)
5
Anti “water hammering”
2
5
3
Extinction of the burner in D. H. W.
CLAS HE EVO
0 = anti-scale (stop at > 67°C)
1 = + 4°C /setting
0
2
5
4
Post-circulation and post-ventilation after a
domestic hot water draw-off
0 = OFF
1 = ON
0
OFF = 3 minutes post-circulation and post-ventilation after domestic hot water draw-off
if the boiler temperature measured requires it.
ON = always on for 3 minutes post-circulation and post-ventilation after domestic hot
water draw-off .
2
5
5
Domestic hot water timer
from 0 to 30 (minutes)
0
2
5
7
<Not Available>
2
5
8
<Not Available>
2
6
BOILER MANUAL SETTINGS
Only to test components
2
6
0
Manual mode activation
0 = OFF
1 = ON
0
2
6
1
Boiler pump control
0 = OFF
1 = ON
0
Set parameter 260=1
2
6
2
Fan control
0 = OFF
1 = ON
0
Set parameter 260=1
2
6
3
3 way valve control
0 = Sanitary
1 = Heating
0
Set parameter 260=1
2
6
4
<Not Available>
