Parameter
Description
Adjustment range
Factory setting
CALORA
TOWER GAS
15S EX
CALORA
TOWER GAS
25S EX
CALORA
TOWER GAS
35S EX
p20
Minimum fan speed
(offset)
Do not modify
50
50
50
p21
Start speed
Do not modify
(x100 rpm)
37
30
40
p22
Minimum water pressure
0 - 3 bar (MPa)(x 0,1bar (MPa))
8
8
8
p23
Maximum flow
temperature of system
0 to 90 °C
90
90
90
p24
Anti-hunting differential for
central heating operation
-15 to 15 °C
3
3
3
p25
Maximum outside
temperature
0 to 30 °C
(Only with an outside temperature
sensor)
20
20
20
p26
Minimum flow temperature
0 to 90 °C
(Only with an outside temperature
sensor)
20
20
20
p27
Heat curve set point
(Minimum outside
temperature)
-30 to 0 °C
(Only with an outside temperature
sensor)
-15
-15
-15
p28
Minimum pump speed for
central heating operation
(Setting the pump speed)
1 to 10
2
2
2
p29
Maximum pump speed for
central heating operation
(Setting the pump speed)
1 to 10
6
6
6
p30
Antifreeze temperature
from - 30 to 0°C
-10
-10
-10
p31
Legionella protection
0 = Stop
1 = Start
(After commissioning, the boiler
will operate once a week at 65°C
for DHW)
3 = Management using a
programmable thermostat
1
1
1
p32
Set point increase for
calorifier
0 to 20 °C
20
20
20
p33
DHW cut-in temperature
DHW sensor
from 2 to 15°C
6
6
6
p34
3-way valve rest position
0 = Heating
1 = DHW
0
0
0
p35
Boiler type
1 = Boiler self-standing or Boiler
with SL / SSL type domestic hot
water tank
2 = Boiler with HL / SHL type
domestic hot water tank
1 or 2
1 or 2
(2)
1 or 2
(2)
p36
Shutdown input function
(BL)
0 = Heating activated
1 = Shutdown without frost-
protection
2 = Shutdown with frost protection
3 = Lock-out with frost protection
(Pump only)
1
1
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
(2) Factory setting depends on installation type
(3) The parameter is only displayed if the SCU-S191 and the solar control system are present
(4) The parameter is only displayed if the SCU-S191 is present
(5) The parameter is only displayed if the solar control system is connected
6. Commissioning
CALORA TOWER GAS 15S EX CALORA TOWER GAS 25S EX
CALORA TOWER GAS 35S EX
70
22/04/2016 - 300026141-001-07
