Basic Documentation

55/256
Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 5 General functions, fundamentals 2017-09-29
For the main controller and the primary controller, setting "Response to uncritical
locking signals" is not required. Both never respond to uncritical locking signals
because the associated hydraulic actuating devices shall be able to respond depending
on the situation.
This locking signal gain is adjustable between 0 and 200 %.
Setting
Response
0 %
Locking signal will be ignored
100 %
Locking signal will be adopted 1-to-1
200 %
Locking signal will be doubled
This enables the heat consumer’s responses to be matched to the locking signals.
If the heat consumer responds too promptly, the value must be decreased; if it
responds too slowly, the value must be increased.
Ventilation controller and individual room control do not respond to locking signals and
forced signals.
With absolute DHW priority, it is to be noted that this signal is always given priority and
that it defines the resulting setpoint.
If some other heat consumer without absolute priority is in the same heat distribution
zone, its value will be ignored, even if it is greater.
Generally, the function of absolute DHW priority in combination with heating circuits
does not pose any problems; nevertheless, the correct plant function must always be
kept in mind.
The use of absolute DHW priority poses problems especially in connection with
ventilation plants since they often call for low flow temperatures.
In the case of shifting priority or with no priority, DHW heating makes it possible to
select whether the heat demand signal shall be evaluated the normal way (maximum
selection), or whether the DHW flow temperature setpoint shall be adopted as the
resulting setpoint.
Refer to section 10.10 " DHW priority".
5.7 Mixing valve control
5.7.1 Control
Main menu > Commissioning > Settings > … or
Main menu > Settings > Heating circuit 1 (or 2 or 3) > Mixing circuit controller
Main menu > Settings > DHW > Controller primary circuit
Main menu > Settings > DHW > Controller maint sec temp
Main menu > Settings > DHW > Controller consumers
Main menu > Settings > Primary controller > Mixing circuit controller
Main menu > Settings > Main controller > Mixing circuit controller
Main menu > Settings > Boiler > Return control
Operating line
Range
Factory setting
Actuator run time
1…600 s
Depending on
various settings
P-band Xp
1…100 K
Integral action time Tn
0…600 s
Setting note
Ventilation controller,
individual room control
Note on DHW priority