oventrop Regtronic BS/2-B, Installation And Operating Instructions Manual, Page: 38 / 68

| 38
CMN:
Collector minimum temp.
Adjustment range:
10.0 ... 90.0 °C
[50.0 ... 190.0 °F]
in steps o
f 0.5 °C [1.0 °F ]
Factory setting:
10.0 °C [50.0 °F]
Collector minimum limitation option
OCN:
Collector minimum limitation
Adjustment range: OFF / ON
Factory setting: OFF
If the collector minimum limitation option is activated,
the pump (R1) is only switched on if the adjustable
collector minimum temperature is exceeded. The minimum
temperature prevents the pump from being switched on too
often at low collector temperatures. A fixed hysteresis of
5 °K [10 °Ra] is set for this function
If the collector minimum limitation is active, (flashing) is
shown on the display.
Antifreeze option
OCF:
Antifreeze function
Adjustment range: OFF / ON
Factory setting: OFF The antifreeze function activates the loading circuit between
the collector and the store when the temperature falls below
the adjusted antifreeze temperature. This will protect the
fluid against freezing or coagulating. If the adjusted antifreeze
temperature is exceeded by 1 K [2 °Ra], the loading circuit
will be deactivated.
When the antifreeze function is activated, is shown on
the display. If the antifreeze function is active,
and
(flashing) are shown on the display.
Note:
Since this function uses the limited heat quantity
of the store, the antifreeze function should be
used in regions with few days of temperatures
around the freezing point.
The antifreeze function will be suppressed if the
store temperature falls below 5 °C [40 °F] in
order to protect the store from frost damage.
CFR:
Antifreeze temperature
Adjustment range:
-40.0 ... +10.0 °C
[-40.0 ... +50.0 °F]
in steps o
f 0.5 °C [1.0 °F ]
Factory setting:
4.0 °C [40.0 °F]
Note:
If OSTC or OCF is active, the collector
minimum function will be overridden. In that case,
the collector temperature may fall below CMN.
Heat quantity measurement
OHQM:
Heat quantity measurement
Adjustment range: OFF / ON
Factory setting: OFF
If OHQM is activated, the heat quantity gained can be calcu-
lated and displayed. Heat quantity measurement is possible if
a flowmeter is used. To enable heat quantity measurement,
proceed as follows:
Î Read the flow rate (l/min) from the flowmeter at
maximum pump speed and adjust it in the FMAX
channel
Î
Adjust the heat transfer fluid and the concentration of
the antifreeze in the channels MEDT and MED%.
FMAX: Flow rate in l/min
Adjustment range: 0.5 ... 100.0
in steps of 0.5
Factory setting: 6.0
MEDT: Heat transfer fluid
Adjustment range: 0 ... 3
Factory setting: 1
MED%: Antifreeze ratio
in Vol-% (MED% is hidden
when MEDT 0 or 3 is used.)
Adjustment range: 20 ... 70 %
in steps of 1 %
Factory setting: 45 %
Heat transfer fluid:
0 : Water
1 : Propylene glycol
2 : Ethylene glycol
3 : Tyfocor
®
LS / G-LS