en
62
Installation
Indications,
functions and options
Messages
Commissioning
Operation and function
Tube collector function
OTC
Tube collector option
Adjustment range: OFF / ON
Factory setting: OFF
TCST
Tube collector function starting time
Adjustment range: 00:00 … 23:45
Factory setting: 07:00
This function is used for improving the switch-on behaviour in systems with
non-ideal sensor positions (e. g. with some tube collectors). This function operates
within an adjusted time frame. It activates the collector circuit pump for an adjust-
able runtime between adjustable standstill intervals in order to compensate for the
delayed temperature measurement.
If the runtime is set to more than 10 s, the pump will be run at 100 % for the first
10 s of the runtime. For the remaining runtime, the pump will be run at the adjusted
minimum speed. If the collector sensor is defective or the collector is blocked, this
function is suppressed or switched off.
TCEN
Tube collector function ending time
Adjustment range: 00:00 … 23:45
Factory setting: 19:00
TCRU
Tube collector function runtime
Adjustment range: 5 … 500 s
Factory setting: 30 s
TCIN
Tube collector function standstill interval
Adjustment range: 1 … 60 min
Factory setting: 30 min
In system 7 both collectors are operated independently from each other by means
of this function. If the store is being loaded by one collector, the other one is nev-
ertheless operated.
Note
If the drainback option ODB is activated, TRCU will not be available. In
that case, the runtime will be determined by the parameters tFLL and
tSTB.
WARNING!
Risk of injury! Risk of system damage by pressure surge!
If a drainback system is filled due to the tube collector function
and the heat transfer medium enters very hot collectors, pressure
surges can occur
Î
If a pressure-less drainback system is used, TCST and
TCEN must be adjusted such that the system will not
be filled during times of potentially strong irradiation!
Heat quantity measurement
OHQM
Heat quantity measurement option
Adjustment range: OFF / ON
Factory setting: OFF
If OHQM is activated, the heat quantity gained can be calculated and displayed.
Heat quantity measurement with fixed flow rate value
The heat quantity balancing (estimation) uses the difference between the flow and
return temperatures and the entered flow rate (at 100 % pump speed).
Î
Read the flow rate (l/min) and adjust it in the FMAX channel.
Î
Adjust the antifreeze type and concentration of the heat transfer fluid in the
channels MEDT and MED%.
Note
Heat quantity measurement is not possible in systems with 2 solar pumps.
