Bedienungsanleitung Bosch Uni 3000 F (Seite 23 von 40) (Englisch)

697439

Zoom out

Zoom in

Vorherige Seite

1/40

Nächste Seite

Mounting | 23

6 720 812 900 (2014/10)Uni 3000 F

Settings for boiler water controller and maximum boiler water

temperature

The boiler water controller is only designed to provide emergency

operation with an adjustable boiler water temperature if the control

electronics fail. In standard control mode, the function of the boiler

water controller is provided by the maximum boiler water temperature.

The maximum boiler water temperature can be selected in the control

unit in the “Boiler parameters” menu, under menu item “Max. shutdown

temperature”.

Control unit settings

Fig. 26 Control unit settings, example for CFB 910

[1] High limit safety cut-out

[2] Temperature control unit

[3] F1, F2 Fuse

[4] Programmer

[5] Burner emergency operation switch

[6] Appliance on/off switch

▶ Set temperatures ( Tab. 14 to 16, and page 22) for high limit

safety cut-out [1] in the control unit and on the temperature

controller [2] respectively.

▶ Set the maximum boiler water temperature on the programmer [4].

Example DHW demand:

Sum of the set DHW temperature (60 °C) the “Boiler rise” parameter

(20 °C) in the “DHW” menu:

60°C+20°C =Maximum temperature demand 80°C

Example heating circuits:

Sum of the set temperature of the heating circuit with mixer with the

highest temperature required (70 °C) and parameter “Boiler rise” (5 °C)

in the “Heating circuit data” menu:

70 °C + 5 °C = Maximum temperature demand 75 °C

Notes on setting third party control units

• The third party control unit (Building Management System or PLC

controllers) must ensure a maximum internal boiler water

temperature that is sufficiently different from the high limit safety

cut-out. It must also be ensured that the control electronics rather

than the boiler water controller switch the burner on and off.

• The control unit must ensure that the burner is switched to low load

before being shut down. If this is not observed, the safety shut-off

valve (SAV) in the gas train may lock out.

• Select control equipment that allows a gentle start-up with a time

delay when the system is cold.

• After the burner demand, an automatic timer (for example) should

limit the burner to low load for a period of approx. 180 seconds.

A restricted heat demand will prevent uncontrolled starting and

stopping of the burner.

• It must be possible to show the number of burner starts on the

control unit used (or alternatively on the burner control unit).

Adjustable parameter (max.

temperature)

CFB 810 with CME 930

High limit safety cut-out (STB)

1) Set the high limit safety cut-out and temperature controller as high as possible,

but ensure the settings are at least 5 K apart.

120 °C

 minimum 5 K

Temperature controller (TR) 105 °C

Table 16 Adjustable parameter CFB 810

The maximum temperature demand is not a value that is

set directly. The maximum temperature demand is

composed of the set temperature and the minimum

required rise.

1 2 3 4 5 6

6 720 806 032-47.1ITL

All maximum temperature demands must always be 7 K

below the maximum selected boiler water temperature.

NOTICE: System damage due to incorrect sensor

position!

The sensors of the high limit safety cut-out (STB) and of

the temperature controller (TR) must be fitted at the

appropriate installation location on the top of the boiler.

▶ In the case of third party control units, match the

sensor immersion sleeve to the diameter of the

sensors used.

▶ Do not change the length of the immersion sleeve.

Observe the operating conditions in Chapter 2.7, page 5

and observe Chapter 4.8, page 21 – page 22 when

installing sensors.

Unit Value

Temperature control unit s 40

Monitor/limiter s 40

Minimum difference between burner on

and off temperatures

K 7

Table 17 Conditions of Use

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.

Bosch Uni 3000 F Seite 23

Brauchen Sie Hilfe? Stellen Sie Ihre Frage.

Missbrauch melden von Frage und/oder Antwort

Art des Missbrauchs:

Forenregeln

Neu registrieren

Andere Handbücher von Bosch Uni 3000 F

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

Ihre Frage wurde zu diesem Forum hinzugefügt

Info