Variant pump:
The allocated relay is energised with 100 %, if the collector temperature reaches the
adjusted switch-on temperature.
If the collector temperature falls by 5 K below the adjusted collector overtemper-
ature, the relay will be switched off. In the variant pump, the heat dump function
works independent from solarloading.
Variant valve:
The allocated relay will be energised in parallel to the solar pump, if the collector
temperature reaches the adjusted collector overtemperature. If the collector tem-
perature falls by 5 K below the adjusted collector overtemperature, the relay will
be switched off.
If one of the store temperatures exceeds its respective maximum temperature by
more than 5 K while the heat dump function is being active, the function will be
deactivated. If the temperature falls below this value by the hysteresis maximum
store temperature (HYST(2) in LOAD(2)), the heat dump function is will be
available again.
Note:
The adjustable value OTCL is blocked against the collector emergency
temperature CEM by 10 K. This function will only be available if the col-
lector cooling function, the heat dump function, and the drainback option
are deactivated.
10
9
a d e f
OTCL
Overtemperature collector
Adjustment range: 40 … 160 °C
Factory setting: 110 °C
OTPUM
Pump or valve logic
Selection: ON / OFF
Factory setting: OFF
HDREL
Relay heat dump function
Selection: system dependent
Factory setting: 3
SFB 9
PUSH
DTSFO
Switch-on temperature diff.
Adjustment range: 1.0 … 50.0 K
Factory setting: 6.0 K
DTSFF
Switch-on temperature diff.
Adjustment range: 0.5 … 49.5 K
Factory setting: 4.0 K
DTSFS
Set temperature diff.
Adjustment range: 1.5 … 50.0 K
Factory setting: 10.0 K
MNSFO
Minimum limitation
Adjustment range: 0.5 … 89.5 °C
Factory setting: 60.0 °C
MXSFS
Maximum limitation
Adjustment range: 0.5 … 95.0 °C
Factory setting: 60.0 °C
9
Solid fuel boiler
The solid fuel boiler function can be used for transferring heat from a solid fuel
boiler to a store.
The relay (system-dependent) is energised when all switch-on conditions are ful-
lled:
• the temperature difference between the sensors heat source and heat sink has
exceeded the switch-on temperature difference.
• the temperature at the solid fuel boiler sensor has exceeded the minimum tem-
perature
• the temperature at the store sensor has fallen below the maximum temperature
When the Set temperature difference is exceeded, pump speed control starts. For
every increase or decrease by the rise value, the pump speed will be adjusted by
10 %.
The switch-on hysteresis is -5 K.
OK
BACK
PUSH
BACK
PUSH
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