DE DIETRICH BSC...E - BSP...E - BESC...E - Manual (Page 12)

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BSC...E - BSP...E - BESC...E 11/05/12 - 300027781-001-01
3.2 Main parts
„
Solar hot water calorifer
- Tank in enamelled steel
- Solar coil
- Electrical resistor for heating the water
- Insulation in CFC-free polyurethane foam
- Casing: Painted sheet steel
„
Solar station
The solar heating pump unit comprises the solar circuit safety unit, a
pressure and temperature gauge and a flowmeter to visualise
circulation of the solar fluid between the panels and the DHW tank.
An expansion vessel is connected to the solar unit; it is used to
compensate for the expansion of the solar fluid in which the
temperature varies between 0 and 150°C.
„
Diemasol A regulator
The control system is the solar system's brain; it makes the solar
heating pump run at variable speeds according to the difference in
temperature between the bottom of the DHW tank and the solar
panels. The control system manages the set point temperature
(temperature to be attained in the DHW tank), overheating and
nighttime cooling. The control system also displays the various
operating modes, the temperatures in the collectors and in the
bottom of the DHW tank, as well as signalling any malfunctions.
3.3 Programming and setting the electrical back-up
The temperature of the volume of water heated by the electrical
resistor is set by the installer on commissioning of the installation
according to the size of the home.
Using the programming device installed in the electrical panel, it is
possible to adjust the volume of water heated to 40°C by the resistor
in two ways: ` By forcing contunuous heating by the resistor (off-peak hours
contact) for significant unforeseen needs.
` By programming the heating time outside off-peak periods (2
hours maximum according to the DHW volume at 40°C
required) to compensate for the lack of sunshine in winter, for
example. With a back-up, the programmed period is set in the
factory to between 16 h and 18 h, i.e. at the end of the day when
the solar contribution is less and just before the draw-off period.
„
Ves 40 settings table
Ves 40: Volume of hot water at 40°C
3.4 Setting the thermostatic mixing valve
28. Domestic cold water inlet
57. DHW tank domestic hot water outlet
BESC 300 E BESC 400 E
Ves 40 off-peak hours only (by 55°C) 190 litres 230 litres
40 off-peak hours + 2 peak hours (by 55°C) 350 litres 435 litres
Ves 40 off-peak hours only (by 60°C) 220 litres 270 litres
40 off-peak hours + 2 peak hours (by 60°C) 380 litres 470 litres
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