Bedienungsanleitung Vaillant ecoVIT exclusiv VKK 226-4 (Seite 10 von 16) (Englisch)

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5 Care and maintenance

10 Operating instructions ecoVIT exclusiv 0020258609_00

4.6.3 Switching off cylinder charging mode

(without control)

▶ Turn the rotary knob for the cylinder temperature to the

anti-clockwise end stop.

◁ Cylinder charging mode is switched off.

◁ The frost protection function is activated for the do-

mestic hot water cylinder.

◁ The display shows the target cylinder temperature of

15 °C for three seconds.

– 15 ℃

Note

The effect of the frost protection function is

that, at cylinder temperatures below 10 °C, the

domestic hot water generation is switched on

until the water in the cylinder has reached 15

°C again.

4.7 Status code meanings

The status codes that are shown in the DIA system's display

provide information about the product's current operating

status.

If several operating statuses occur at the same time, the

applicable status codes are displayed alternately, one after

the other. The status code is explained a plain text display in

the display.

Status codes (→ Page 14)

5 Care and maintenance

5.1 Caring for the product

Caution.

Risk of material damage caused by un-

suitable cleaning agents.

▶ Do not use sprays, scouring agents, de-

tergents, solvents or cleaning agents that

contain chlorine.

▶ Clean the casing with a damp cloth and a little solvent-

free soap.

5.2 Maintenance

An annual inspection and biennial maintenance of the

product carried out by a competent person is a prerequisite

for ensuring that the product is permanently ready and safe

for operation, reliable, and has a long working life. The

inspection may require maintenance to be carried out earlier,

depending on the results.

5.3 Guaranteeing the correct filling pressure of

the heating installation

5.3.1 Checking the system pressure

1 − button

▶ Check the heating installation's filling pressure at regular

intervals. Briefly press the − button.

◁ The display will show the filling pressure for approx-

imately 5 seconds.

◁ The filling pressure must be between 0.1 MPa and

0.2 MPa (1.0 and 2.0 bar) when the heating installa-

tion is cold in order for the heating installation to op-

erate properly. If the pressure is lower, you must add

heating water before starting up.

Note

You can permanently switch between the tem-

perature or pressure display in the display by

pressing and holding the – button for approx-

imately five seconds.

Note

To avoid operating the heating installation with

an insufficient water volume and to prevent

potential subsequent damage, the product

is fitted with a pressure sensor. The pres-

sure sensor signals the low pressure level if

the level falls below 0.06 MPa (0.6 bar). This

is signalled by the system pressure value in

the display flashing. If the level falls below

0.03 MPa (0.3 bar), the system displays the

fault message and F.22 alternately, and the

burner is blocked. If the system pressure is

lower than 0.06 MPa (0.6 bar), fill the heat-

ing installation up again as quickly as pos-

sible. As soon as the system pressure ex-

ceeds 0.06 MPa (0.6 bar), the product starts

up without any further measures being re-

quired.

If the pressure sensor is defective, the

product enters comfort protection mode. The

maximum possible flow temperature and the

power are limited. The status S.40 and F.22

(water deficiency) are displayed alternately.

Note

If the heating installation extends over several

floors, a higher system pressure for the heat-

ing installation may be necessary. Ask your

competent person for details.

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