Cosmo Multi 2 User Manual

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System warning “DT too high“
Expert/DT too high
selection: „Yes“, „No“
factory setting: „Yes“
This message is shown, if solar loading has been car-
ried out for a period of 20 minutes with a differential
higher than 50 K.
The message function can be deactivated by selecting
“No“.
System warnin
g “Non-ret. valve“
Expert/non-ret. val.
selection: „Yes“, „No“
factory setting: „Yes“
This message is shown if between 11 p.m. and 5.00 a.m.
the collector temperature is higher than 40 °C or a store
is loaded because of a high temperature difference. The
message function can be deactivated by selecting “No“.
Message relay (error message)
Expert/Message rel.
selection: „Yes“, „No“
factory setting: „No“
Activate this function by selecting “Yes“. If the control-
ler detects a fault, the message relay is energised (e.g.
for signal lights).
These errors are:
• Sensor defective
• Real-time-clock (RTC) defective
• Storage module (EEPROM) defective
A message caused by one of the plausibility controls
(non-return valve, DT too high) does not activate the
relay.
4.4 Menu: Expert
4. Functions and options
Chimney sweeper
Expert/chimney
selection: “Yes“, “No“
factory setting: “No“
Expert/chimney sweeper
This function is used for activating a given relay state
when required.- e. g. flue gas measurement if the system
controls a boiler. Activate this function by selecting “Yes“.
Adjust the required relay status in the chimney sweeper
menu (expert / chimney sweeper).
If the chimney sweeper function is activated, “chimney
sweeper“ is indicated in the main menu.
Solar shutdown
Expert/solar
selection: “Yes“, “No“
factory setting: “Yes“
In this menu, the menu level and „solar“ control are
deactivated. The sensors of the solar thermal system
will no longer be monitored for errors.
Flow and return interchanged
Expert / FL/RE interchanged
selection: „Yes“, „No“
factory setting: „No“
This function is used for detecting an interchange of
the flow and return pipe or a badly placed collector
sensor. For this purpose, the collector temperature is
monitored for plausibility during the switch-on phases
of the solar pump. An error message will appear, if the
plausibility criteria have not been met 5 times in a row.

Cosmo Multi 2 Specifications

General

Brand	Cosmo
Model	Multi 2
Category	Controller
Language	English