Vaillant VRT 230 Operating and Manual de instalación descargar pdf (Pagina 4)

VRT 50 Room Thermostat Operating and Installation Manual4

VRT 50

-+789

- BUS + 7 8 9

Boiler

LN 345

Fig. 9.1 Electrical connection

10 Start-up

No additional settings are required for the start-up.

The heating engineer can additionally adapt the (pro-

grammable) room thermostat to the environment or the

preferences of the user.

10.1 Installer level

You can go to the installer level by pressing the dial for

about 10 seconds.

The spanner symbol

appears on the display.

• You can switch to the next parameter by pressing the

dial.

The following parameters can be set:

Parameter 1: Setting of a minimum temperature as a

lower limit for the control range

You can set a minimum temperature by turning the dial.

Setting range 5 … 30° C (default setting: 5° C)

Parameter 2: Switchover between two-point and contin-

uous control

You can change the parameter by turning the dial.

0 = two-point control (default setting)

1 = continuous control

You can exit the installer level as follows:

• Press the dial for about 5 seconds

• After 5 minutes if you do not operate the dial.

The basic display then reappears.

10.2 Handing over the device to the owner

The owner of the (programmable) room thermostat

must be instructed about its functions and how to oper-

ate it.

• Hand over the manuals intended for the owner as well

as the documents of the device.

• Go through the operating manual with the owner and

answer any questions.

• Draw special attention to the safety instructions,

which the owner must follow.

11 Technical data

Description Unit Value

Operating voltageU

max

V24

Maximum permissible ambient temperature °C 50

Current consumption mA 17

Minimum cross-section of the connection lines mm

0.75

Level of protection IP 20

Protection class for controller III

Dimensions

Height mm 97

Width mm 97

Depth mm 27

Table 11.1 Technical data

12 Vaillant service

To ensure regular servicing, it is strongly recommended

that arrangements are made for a Maintenance Agree-

ment. Please contact Vaillant Service Solutions (0870

6060 777) for further details.

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Vaillant VRT 230 Operating and Manual de instalación Pagina 4

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