Basic Documentation

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Siemens Modular Heating Controller RMH760B CE1P3133en
Building Technologies 10 DHW heating 2017-09-29
Norm
Red
OFF
ON
3133 D08
SDDhw
TStTaSetp
t
With forced charging
SDDhw
Switching differential DHW heating
Red
DHW operating mode "Reduced"
Norm
DHW operating mode "Normal"
t
Time
Push
DHW push, forced charging triggered
TstTa
Temperature at the storage tank sensor
Main menu > Settings > DHW > DHW
Operating line
Range
Factory setting
Forced charging Never /
With 1st change to normal /
With every change to
normal
Never
If the storage tank shall already be fully charged at the beginning of the day (to the
normal setpoint
), the setting to be selected is With 1st change to normal.
This setting will initiate forced charging the first time the DHW time switch changes over
to the normal setpoint
.
Forced charging can also be triggered manually via a pushbutton. For that, a digital
input is to be configured.
Inputs > Forced charging Assign terminal
No settings are required when triggering forced charging via a pushbutton.
10.4.3 Maximum charging time
To prevent the heating circuits from being locked or limited by DHW priority for
extended periods of time, the charging time can be limited.
If, on completion of the selected maximum charging time, charging is still active,
storage tank charging will be aborted.
In that case, charging will be locked during the maximum charging time. On completion
of the waiting time, charging control will again take place via the storage tank
temperature.
Main menu > Settings > DHW > DHW
Operating line
Range
Factory setting
Charging time max
---- / 5…250 min
----min
Charging time limitation is not active in the following cases:
• In Protection mode
• In summer operation
• When there is no DHW priority
• With shifting DHW priority, when the heat source supplies sufficient amounts of heat
• When using setting "----"
Forced charging will stop an active charging time limitation.
Settings
Forced charging
Manual forced charging
Extra configuration
Settings
Aborting
Settings