Bedienungsanleitung Siemens RVP201 (Seite 25 von 46) (Englisch)

555850

Zoom out

Zoom in

Vorherige Seite

1/46

Nächste Seite

25/46

Siemens Heating controllers RVP201 and RVP211 CE1P2464en

Building Technologies 3 Technical design 12.12.2007

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

3.7.2 Acquisition of d.h.w. temperature

Refer to "3.2 Acquisition of actual values".

The d.h.w. temperature can also be acquired with a thermostat, at the expense of re-

duced functionality, however.

Since all measuring circuits use low voltage, an intermediate relay is required. The

thermostat controls the relay whose contacts are connected to terminals B3-M (also

refer to "5.2 Connection diagrams").

On the thermostat, the setpoint of the d.h.w. temperature is set. If the d.h.w. tempera-

ture falls below the setpoint, the thermostat will energize the relay, and the controller

interprets the bridging of terminals B3-M as a demand for d.h.w. heating.

Alternative to the relay: if a new thermostat is used, or a thermostat with new contacts,

the intermediate relay will not be required.

The contacts of the thermostat must meet the following requirements, however:

• Transfer resistance <80 Ω

• Voltage <10 V

• Current ≤10 mA

The contacts must be capable of switching reliably the required voltage and current.

3.7.3 D.h.w. heating with charging pump

D.h.w. heating with a charging pump can be employed either with mixing valve opera-

tion (flow temperature control) or boiler operation (boiler temperature control).

To ensure fast d.h.w. heating, the other heating loads can be restricted during the time

the d.h.w. is heated (priority). The following choices are available:

• Absolute priority:

During d.h.w. heating, the heating circuit pump is locked, which means that all other

heating loads will be dead.

In the case of underfloor or ceiling heating systems, as well as boiler operation, ab-

solute priority is mandatory

• No priority (parallel operation):

Both heating circuit pump and charging pump operate at the same time

If the sensor acquires a d.h.w. temperature that lies 5 K below the d.h.w. temperature

setpoint (or if the contact of the d.h.w. thermostat closes), the charging pump will be

activated. During d.h.w. heating, the flow temperature is raised to a level that is 16 K

(fixed value) higher than the adjusted setpoint of the d.h.w. temperature.

When the d.h.w. temperature reaches the setpoint, the charging pump will be deacti-

vated again. If the d.h.w. temperature falls to a level that lies 5 K below the setpoint

(switching differential), the charging pump will be activated again.

Enabling of d.h.w. heating:

Measurement with

a sensor

Measurement with

a thermostat

Priority

Heating

Missbrauch melden von Frage und/oder Antwort

Libble nimmt den Missbrauch seiner Dienste sehr ernst. Wir setzen uns dafür ein, derartige Missbrauchsfälle gemäß den Gesetzen Ihres Heimatlandes zu behandeln. Wenn Sie eine Meldung übermitteln, überprüfen wir Ihre Informationen und ergreifen entsprechende Maßnahmen. Wir melden uns nur dann wieder bei Ihnen, wenn wir weitere Einzelheiten wissen müssen oder weitere Informationen für Sie haben.

Siemens RVP201 Seite 25

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Andere Handbücher von Siemens RVP201

Das Handbuch wird per E-Mail gesendet. Überprüfen Sie ihre E-Mail.

Ihre Frage wurde zu diesem Forum hinzugefügt

Info