en
63
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
FMAX
Flow rate in l/min
Adjustment range: 0.5 … 100.0
Factory setting: 6.0
MEDT
Heat transfer fluid
Adjustment range: 0 … 3
Factory setting: 1
Heat transfer fluid:
0 : Water
1 : Propylene glycol
2 : Ethylene glycol
3 : Tyfocor
®
LS / G-LS
MED% Antifreeze ratio
in Vol-% (MED% is not indicated when MEDT 0 or 3 is used.)
Adjustment range: 20 … 70 %
Factory setting: 45 %
Note
If the system 10 has been selected and OHQM is activated, heat quantity
measurement will be interrupted when the 3-port valve switches to the
heat dump.
Drainback option
Note
A drainback system requires additional components such as a holding
tank. The drainback option should only be activated if all components
required are properly installed.
Note
The drainback option is only available in system with one store and one
collector (Arr 1, 2, 3, 8 and 9).
In a drainback system the heat transfer fluid will flow into a holding tank if solar
loading does not take place. The drainback option initiates the filling process if solar
loading is about to start. If the drainback option is activated, the following adjust-
ment can be made.
ODB
Drainback option
Adjustment range: OFF / ON
Factory setting: OFF
Note
If the drainback option is activated, the cooling functions and the antifreeze
function will not be available. If one or more than one of these functions
have been activated before, they will be deactivated again as soon as ODB is
activated. They will remain deactivated, even if ODB is deactivated later on.
Note
If the drainback option ODB is activated, the factory settings of the param-
eters nMN / n1MN, DT O, DT F and DT S will be adapted to values suiting
drainback systems:
Additionally, the adjustment range and the factory setting of the collector
emergency shutdown will change. Adjustments previously made in these
channels will be overridden and have to be entered again if the drainback
option is deactivated later on.
