For The Buffer Storage Tank - Siemens SIGMAGYR RVP540 Basic Documentation

Description
Process
 Note
332/348
Siemens Building Technologies
HVAC Products
6.9.5

For the buffer storage tank

If the buffer storage tank temperature drops too much, a heat demand signal will be
triggered. If the buffer storage tank is equipped with an electric immersion heater (refer
to operating lines 146 and 172), the demand for heat is delivered to the electric immer-
sion heater or, otherwise, to a controllable heat source (oil- or gas-fired boiler).
If...
The buffer storage tank temperature at the coldest sensor
falls below 7 °C ...
(TPx < 7 °C)
The buffer storage tank temperature at the coldest sensor
rises to at least 10 °C ...
(TPx > 10 °C)
• The frost protection setpoint of the buffer storage tank is factory-set at 5 °C and
cannot be changed.
Basic Documentation RVP540 / RVP550
General control processes
then...
... the frost protection func-
tion for the buffer storage
tank becomes active.
... the frost protection func-
tion for the buffer storage
tank will be terminated.
CE1P2488en
04.11.2009