6 ROTEX control system ALPHA
+
23R
43
FA ROTEX ESU - 07/2008
6.6.2 Overview of system parameters
You can tailor the ROTEX ESU to the prevailing installation conditions by setting the parameters. This section provides an
overview of all the available system parameters and their possible settings.
For information about the heating technician access code, see section 6.6.4.
Universal parameters
Param
eter no.
Parameter name
Can be set
by:
Range
Increment
Fa
ct
or
y s
ettin
g
(FS)
Meaning
Installer
Op
er
at
or
/U
se
r
Min.
Max.
1 Unit type
x
1
4
1
0
0 = undefined, user is requested to set operation mode
1 = oil condensing boiler standard
2 = reserved
3 = gas condensing boiler
4 = ROTEX ESU
2 Hot water on/off,
Legionella protection
x
0
3
1
1
0 = Hot water off
1 = Hot water on, no Legionella protection
2 = Hot water on, Legionella protection every Saturday
3 = Hot water on, Legionella protection every day
4 Max. hot water
temperature, heating
technician
x
15 °C
65 °C
1 K 60 °C Maximum settable warm water temperature for heating technician
5 Max. hot water
temperature, operator
x
x
Para-
meter
[7]
Para-
meter
[4]
1 K 60 °C Maximum settable warm water temperature for user
7 Hot water, energy-saving x
x
15 °C
Para-
meter
[5]
1 K 40 °C
Warm water temperature at night setback or at standard tariff
8 Hot water switch-on
hysteresis
x
1 °C
20 °C
1 K
2 K Request for hot water is generated if:
Target hot water temperature - hot water temperature
≥
hot water
switch-on hysteresis
10 Parallel operation
x
0
1
1
0
A storage tank charging pump is used in place of a three-way valve. The
boiler circuit pump and the storage tank charging pump run in parallel.
11 Heating on
x
x
0
4
1
2
0 = No heating mode
1 = Heating mode for direct circuit only, ECO function, weather-driven
2 = Heating mode for direct circuit only, economy function,
weather-driven
3 = Heating mode for direct and mixer circuit, ECO function,
weather-driven
4 = Heating mode for direct and mixer circuit, economy function,
weather-driven
Note: If a mixer circuit sensor is identified during automatic sensor
detection, the parameter is automatically set to "4".
13 Maximum flow
temperature, heating
technician
x
Para-
meter
[26]
78 °C
1 K 60 °C
Maximum flow temperature during heating mode (e. g. 55 °C for an
underfloor heating system)
15 Assignment of room
temperature control
x
0
3
1
0
0 = Room temperature control off
1 = Room temperature control assigned to direct circuit
2 = Room temperature control assigned to mixer circuit
3 = Room temperature control affects both circuits
Tab. 6-7
Universal system parameters (part I)
