DE DIETRICH BSC...E - BSP...E - BESC...E - Manual (Page 18)

18
BSC...E - BSP...E - BESC...E 11/05/12 - 300027781-001-01
„ Adjustment parameter CX - Maximum collector
temperature
Adjustment range: 100 ... 125 °C
Factory setting: 100 °C

Maximum collector temperature (overheating safety): Non-
adjustable value: 130 °C.
If the temperature in the collector rises above its maximum
temperature CX even though the solar circuit is stopped (tank set
storage temperature reached), the solar pump (R1) switches on and
cools the collector (system cooling). In these conditions, the tank
temperature rises, but it can't exceed 80 °C (safety cut-off).
If the calorifier reaches the maximum temperature of 80°C (safety
shutdown), the regulator switches off the solar pump.

The collectors may reach a temperature of 160 ... 200°C, which
is normal for a solar installation.
The cooling functions allows heat to dissipate; the system thus
remains operational longer during hot summers. When it leaves the
factory, the collector's maximum temperature is preset to 100 °C;
however, it is possible to change this within the range 100 ... 125 °C.
If the maximum collector temperature is exceeded, the display shows
, and (flashing) and the LED changes to flashing red/
green.
„ Adjustment parameter tu - Self-calibration phase
Adjustment range: 1 ... 5 minutes
Factory setting: 1 minutes
When the solar collector reaches a minimum temperature of 30 °C
and a preset temperature difference of 10 K from the tank
temperature, the regulator switches on the solar circulating pump at
full speed for the time period set by parameter tu. During this phase,
any air bubbles present in the solar collectors or the pipes are moved
to the complete solar station by the high circulation speed in the pipes
and eliminated by the Airstop system (manual bleed degasser). After
this phase, the regulator changes to "matched flow" mode. The
remaining self-calibration time is displayed with parameter tc.
„
Adjustment parameter PN - Pump minimum
speed
Adjustment range: 50 ... 100%
Factory setting: 50%
Adjustment parameter PN sets a minimum value for the solar pump
speed at the relay R1 output. The lower the pump regime, the lower
its flow.
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