Parameter
Description
Adjustment range
Factory setting
Calenta
25s 28c 35s 40c
p19
Minimum fan speed (Heating
+DHW)
G25 (Gas L)
(1)
(x100 rpm)
18
18
17
17
G20 (Gas H)
(x100 rpm)
18
18
17
17
G31 (Propane)
(x100 rpm)
18
18
18
17
CLV overpressure (combusted gas discharge
systems)
(x100 rpm)
21
21
23
23
p20
Minimum fan speed (offset)
G25 (Gas L)
(1)
50
50
75
75
G20 (Gas H)
50
50
75
75
G31 (Propane)
50
50
75
75
CLV overpressure (combusted gas discharge
systems)
50
50
40
40
p21
Start speed
Do not modify
(x100 rpm)
30
30
40
40
p22
Minimum water pressure
0 - 3 bar(x 0,1 bar)
8
p23
Maximum flow temperature of
system
0 to 90 °C
90
p24
Anti-hunting differential for central
heating operation
-15 to 15 °C
3
p25
Heat curve set point
(Maximum outside temperature)
0 to 30 °C
(Only with an outside temperature sensor)
20
p26
Heat curve set point
(Supply temperature)
0 to 90 °C
(Only with an outside temperature sensor)
20
p27
Heat curve set point
(Minimum outside temperature)
-30 to 0 °C
(Only with an outside temperature sensor)
-15
p28
Setting the pump speed
(Minimum pump speed for central
heating operation)
2 - 10 (x 10 % )
2
p29
Setting the pump speed
(Maximum pump speed for
central heating operation)
2 - 10 (x 10 % )
6
p30
Antifreeze temperature
from - 30 to 0°C
-10
p31
Legionella protection
0 = Stop
1 = Start
(After commissioning, the boiler will operate once a
week at 65°C for DHW)
2 = Management using a programmable thermostat
1
0
1
0
p32
Set point increase for calorifier
0 to 20 °C
15
p33
DHW cut-in temperature DHW
sensor
from 2 to 15°C
6
p34
Control of three-way valve
0 = Normal
1 = Reverse
0
p35
Boiler type
0 = Heating and instant domestic hot water
1 = Heating only
1
0
1
0
p36
Shutdown input function
0 = Heating activated
1 = Shutdown without frost-protection
2 = Shutdown with frost protection
3 = Lock-out with frost protection (Pump only)
1
p37
Release function
0 = Hot water on
1 = Release input
1
(1) Do not modify these factory settings unless absolutely necessary. For example, for modification of the boiler for: G20 (H gas) or G31 (propane),
high pressure systems, WTW coupling or CLV overpressure
Calenta 25s - 28c - 35s - 40c
5. Commissioning
040412 - 7600585-01
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