Resol BASIC controller Manual For The Specialised Craftsman page 25

5
ODB 5
OK
PUSH
BACK
PUSH
BACK
PUSH
5
5 Drainback option
In a drainback system the heat transfer fluid will flow into a holding tank if solar
ODB
loading does not take place. The drainback option initiates the filling process if solar
Drainback option
loading is about to start. If the drainback option is activated, the following adjust-
Selection: OFF / ON
Factory setting: OFF ment can be made:
ON
tDTO
Time period – switch-on
condition
Adjustment range: 1 ... 100 s
Time period – switch-on condition
in steps of 1 s
The parameter tDTO is used for adjusting the time period during which the
Factory setting: 60 s
switch-on condition DT O must be permanently fulfilled.
tFLL / Filling time
Filling time
Adjustment range:
The filling time can be adjusted using the parameter tFLL. During this period, the
1.0 ... 30.0 min
pump runs at 100 % speed.
in steps of 0.5 min
Stabilisation
Factory setting: 5.0 min
The parameter tSTB is used for adjusting the time period during which the switch-
tSTB / Stabilisation
off condition will be ignored after the filling time has ended.
Adjustment range:
1.0 ... 15.0 min
in steps of 0.5 min
Factory setting: 2.0 min
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
If the drainback option is activated, the cooling function and the antifreeze
function will not be available.
The H-DAY menu (holiday function) will also not be available and cannot be
selected by means of the microbutton .
Note
The drainback option is only available, if the cooling function is deactivated.
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