Technical data

40
MCR 24, 24/28 MI, 30/35 MI, 34/39 MI 08/06/06-300008460-001-B
2.4 Setting different parameters (with access code)
To get acces to the error memory, the acces code 12 must be
entered.

Adjustment must be done by a qualified professional.
**The character - is not displayed.

Modification of the factory parameters may be detrimental
to the functioning of the boiler.
Parameter Description Comments Factory setting
24 24/28 MI 30/35 MI 34/39 MI
P17 Maximum ventilator speed
(Heating)
10-70
X 100 rpm
37 37 41 47
P18 Maximum ventilator speed (DHW) Do not modify 46 55 63 67
P19 Minimum ventilator speed
(Heating+DHW)
Do not modify
13 13 13 13
P20 Start up speed for the ventilator Do not modify 25 25 28 30
P21
Setting the pump speed
0 = Part load
1 = Full load
0
P22 Operating time: Pump (Heating) 1 to 99 minutes 2
P23 Connection with the heat
recuperation unit
0 = No connection
1 = Connection
0
P24
Remote alarm
(Terminal X7)
0 = Stop "OFF" (Connectors 1 and 2 closed)
1 = Alarm messages (Connectors 1 and 3 closed)
2 = Operating light (Connectors 1 and 3 closed)
3 = External gas valve (Connectors 1 and 3
closed)
0
P25
The regulator includes legionella
protection function, that can be
actived
0 = Stop
1 = Start
2 = Automatic (After commissioning, the boiler will
operate once a week at 65°C for DHW) 1000
P26 DHW cut-in temperature 2 to 15 °C 5
P27 Heat curve set point: Flow
temperature
0 to 60 °C
20
P28 Heat curve set point: Outside
temperature (Max)
0 to 30 °C
20
P29 Heat curve set point: Outside
temperature (Min)
-40 to 0 °C
-15**
P30
Boiler type
0 = MCR 1024
1 = MCR ... Combi (Heating only)
1 0 0 0
P31 Temperature, for which the
production of domestic hot water
is stopped, exceeded
0 to 20 °C
15
PdF (PdU)
Factory setting
Parameter dFX appears on the identification
plate; if this parameter is set as X, the factory
parameters will be reinstated
X
Parameter dUY appears on the identification
plate; if this parameter is set as Y, the factory
parameters will be reinstated
Y