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Siemens
Heating controllers RVP201 and RVP211
CE1P2464en
Building Technologies
3 Technical design
2017-07-21
Frost protection is always active, even if the control is switched off (operating modes
and
), with quick setback, and with Off through ECO.
If desired, frost protection for the plant can be deactivated with the coding switch “Frost
protection”.
Frost protection for the plant is accomplished in two steps:
1. If the outside temperature falls to 1.5 °C, the heating circuit pump will be activated
for 10 minutes at 6-hour intervals.
2. If the outside temperature falls to –5 °C, the heating circuit pump will be activated
and runs continuously.
The frost protection stage active at a time will be switched off when the outside tempera-
ture has exceeded the limit value by an amount equal to the switching differential of 1 K.
Frost protection for the plant is accomplished in two steps:
1.
If the flow temperature falls to 10 °C, the heating circuit pump will be actuated
for 10 minutes at 6-hour intervals.
2.
If the flow temperature falls to 5 °C, the heating circuit pump will be actuated
and runs continuously.
The frost protection stage active at a time will be switched off when the flow temperature
has exceeded the limit value by an amount equal to the switching differential of 1 K.
3.6.2 Frost protection for the building
Frost protection for the building protects the rooms from excessively low temperatures.
It acts in all operating modes as a minimum limitation of the room temperature. It can
be achieved with or without room unit, provided the heating curve slope is correctly set.
The frost protection for the building is given higher priority over the ECO automatic
energy saver. If desired, frost protection for the building can be deactivated with the
coding switch “Frost protection”.
Without room unit:
Attenuated outside temperature 5 °C: the control is switched on and the flow
temperature is controlled such that a room temperature of 5 °C will be maintained
Attenuated outside temperature >6 °C: the control is switched off
With room unit and with quick setback active:
Room temperature 5 °C: the control is switched on and the flow temperature is
controlled such that a room temperature of 5 °C will be maintained
Room temperature >6 °C: the control is switched off
With room unit, but without quick setback:
Same as without room unit
3.7 D.h.w.
heating
3.7.1 General
Only the RVP211 provides d.h.w. heating. It supports operation with the charging pump
or the changeover valve.
For d.h.w. heating, the RVP211 features:
a fourth output relay (Q3) for the control of the d.h.w. charging pump or the d.h.w.
changeover valve
a setting facility for the d.h.w. temperature setpoint
a setting facility for the priority
With outside sensor
Without outside sensor
