Solar DHW
WARNING:
Risk of scalding!
▶ If DHW temperatures above 60 °C are set or thermal disinfection is
switched on, a mixer must be installed.
Menu item
Adjustment range: Function description
DHW controller act. Boiler
• One DHW system is installed and is controlled by the
heat appliance.
• 2 DHW systems are installed. One DHW system is
controlled by the heat appliance. The 2nd DHW
system is controlled by a MM 100 module (coding
switch set to 10).
Thermal disinfection, reheating and solar optimisation
only have an effect on the DHW system that is controlled
by the heat appliance.
External module 1
• One DHW system is installed and is controlled by an
MM 100 module (coding switch set to 9).
• 2 DHW systems are installed. Both DHW systems are
controlled by a MM 100 module (coding switch set to
9/10).
Thermal disinfection, reheating and solar optimisation
only have an effect on the DHW system that is controlled
by external module 1 (coding switch set to 9).
External module 2
• 2 DHW systems are installed. One DHW system is
controlled by the heat appliance. The 2nd DHW
system is controlled by a MM 100 module (coding
switch set to 10).
• 2 DHW systems are installed. Both DHW systems are
controlled by a MM 100 module (coding switch set to
9/10).
Thermal disinfection, reheating and solar optimisation
only have an effect on the DHW system that is controlled
by external module 2 (coding switch set to 10).
Therm.dis./daily
Yes: Switch on thermal disinfection and daily heat-up of
ht cyl1
1st cylinder.
No: Switch thermal disinfection and daily heat-up of
cylinder 1 off.
Therm.dis./daily ht
Yes: Switch on thermal disinfection and daily heat-up of
cyl2
2nd cylinder.
NoSwitch thermal disinfection and daily heat-up of
cylinder 2 off.
Therm.dis./daily ht
Yes: Switch off thermal disinfection and daily heat-up of
cyl3
3rd cylinder.
No: Switch thermal disinfection and daily heat-up of
cylinder 3 off.
Daily heat-up time
00:00 ... 02:00 ... 23:45 h: Start time for daily heat-up.
Daily heat-up ends after a maximum of 3 hours. Only
available if the MS 200 module is installed in a BUS system
without a heat producer (not possible with all user
interfaces)
Daily heat-up temp. 60 ... 80 °C: The daily heat-up ends once the set
temperature is reached, or, if the temperature is not
reached, after a maximum of 3 hours. Only available if the
MS 200 module is installed in a BUS system without a heat
producer (not possible with all user interfaces)
Table 15 Solar DHW
MS 200 – 6721819173 (2020/02)
4.5.2
Start solar thermal system
Menu item
Adjustment range: Function description
Start solar thermal
Yes: Only after enabling this function, can the system start
system
up.
Before starting up the solar thermal system, you must:
▶ Fill and vent the solar thermal system.
▶ Check the parameters for the solar thermal system
and, if necessary, adjust them to suit the installed
system.
No: This function can be used to switch off the solar
system for maintenance purposes.
Table 16 Start solar thermal system
4.6
Settings menu primary store system (System 3)
This menu is only available if the module is installed in a BUS system,
without heat production.
The default settings are shown in bold in the adjustment ranges.
The following overview provides a brief description of the Transfer
settings menu. The menus and available settings are described in detail
on the following pages. The menus depend on the installed user
interface and the installed system.
Overview of the Transfer settings menu
• Change transfer configuration – Add functions to the transfer
system.
• Current transfer configuration – Graphic representation of the
currently configured transfer system.
• Transfer parameters – Settings for the installed transfer system.
Transfer parameters
Menu item
Adjustment range: Function description
Transfer switch-on
6 ... 10 ... 20 K: If the differential set here between
diff.
cylinder 1 and cylinder 3 is exceeded and all conditions for
switching on have been met, the transfer pump is on.
Transfer switch-off
3 ... 5 ... 17 K: If the differential between cylinder 1 and
diff.
cylinder 3 falls below the value set here, the transfer pump
is off.
Max. DHW temp.
20 ... 60 ... 80 °C: If the temperature in the 1st
cylinder goes over the value set here, the transfer pump is
off.
Daily heat-up time
00:00 ... 02:00 ... 23:45 h: Start time for daily heat-up.
Daily heat-up ends after a maximum of 3 hours.
Daily heat-up temp. 60 ... 80 °C: The daily heat-up ends once the set
temperature is reached, or, if the temperature is not
reached, after a maximum of 3 hours.
Fault display
Yes: If a fault develops in the transfer system, the output is
activated to t display the fault.
No: If a fault develops in the transfer system, the output is
not activated to display a fault (always de-energised).
Inverted: The fault display is activated but the signal is
inverted. This means that the output is energised and is
switched to the de-energised state, when a fault is
displayed.
Table 17 Transfer parameters
Commissioning
39