Viessmann VITOSOLIC 200 Instructions d'exploitation télécharger pdf (Page 48)

DHW heating with mono-mode DHW cylinder and central heating

backup with multi-mode heating water buffer cylinder

Main components

■ Viessmann solar collectors

■ DHW cylinder Vitocell 100-V or

Vitocell 300-V

■ Multi-mode heating water buffer cylin-

der Vitocell 340-M or Vitocell 360-M

with integral DHW heating, with or

without stratification system

■ Vitosolic 200

■ Solar-Divicon

■ Wall mounted oil/gas boiler or oil/gas

boiler

Function description

DHW heating with solar energy

Solar circuit pump R1

starts and

heating water buffer cylinder

heated up if the temperature differential

between collector temperature sensor

and cylinder temperature sensor

is greater than the start tempera-

ture differential ΔTon.

Solar circuit pump R1

is stopped in

accordance with the following criteria:

■ Actual temperature dropping below

the stop temperature differential ΔToff

■ Exceeding the electronic temperature

limit of control unit

(max. 90 °C)

■ Reaching the temperature selected at

high limit safety cut-out

(if installed)

Entire heating water buffer cylinder

heated by the solar thermal system if the

insolation is adequate for DHW heating.

If there is inadequate solar energy, the

DHW in the lower part of heating water

buffer cylinder

is preheated by solar

energy, and heated to the required tem-

perature in DHW cylinder

by boiler

A temperature-controlled DHW stratifi-

cation is not possible.

DHW heating without solar energy

DHW cylinder

is heated by

boiler

. The cylinder thermostat with

cylinder temperature sensor

of boiler

control unit

regulates the circulation

pump for cylinder heating

Central heating with solar energy

Three-way diverter valve R6

switched to position "AB-A" and the heat-

ing return water is routed to boiler

via

heating water buffer cylinder

, if the

temperature differential between buffer

cylinder temperature sensor S5

and

heating circuit return temperature sensor

exceeds start temperature differ-

ential ΔT6on. If the temperature of the

preheated return water is too low, boiler

reheats the water to the required flow

temperature. Three-way diverter valve

is switched to position "AB-B" if

the actual temperature falls below the

stop temperature differential ΔT6off.

System examples

System example 7

5414 620 GB

1 2 ... 43 44 45 46 47 48 49 50 51 52 53 ... 171 172

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Viessmann VITOSOLIC 200 Instructions d'exploitation Page 48

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