Vaillant ecoTEC plus 837 Service Manual download pdf (Page 47)

Commissioning

Installation and maintenance instructions ecoTEC plus 0020116700_06 47

10.12 Carrying out a full function test

> After completing the installation and the gas setting, per-

form a complete function check of the boiler before start-

ing up the boiler and handing it over to the operator.

> Start up the boiler in accordance with the relevant oper-

ating instructions.

If you have still not successfully completed the installation

assistant and subsequently confirmed this, it will be

restarted when you switch on the boiler. Before continuing,

complete the installation assistant (¬section10.2).

10.8 Checking for leaks

Caution!

Malfunction or shortened life expectancy!

The leak detection spray can damage the

heating device.

> Do not spray the leak detection spray on

the cover cap on the filter of the Ven-

turis

(3, ¬fig.3.1 and 3.2).

> Check the gas supply line, the flue gas installation, the

heating installation and the hot water pipes for leaks.

> Check the air/flue gas duct for correct installation.

> Make absolutely sure that the front casing is properly fit-

ted.

> Check the heating mode (¬section10.12.1)

> Check the operation of the hot water generation

(¬section10.12.2 and 10.12.3)

You can display the current operating condition of the

boiler in the "Live monitor" on the boiler display

(¬section13.2.1).

Menu ¬ Live monitor

10.12.1 Checking the heating mode

> Switch on the boiler.

> Make sure that there is a heat requirement.

> Activate the Live monitor (¬section13.2.1).

S.04

Heating mode

Burner on

Back

10.9 Live monitor – display during heating mode

If the boiler is operating correctly, the display will show sta-

tus code "S.04". The status code displayed will also be

explained by the plain text display "Heating mode: Burner

on".

10.12.2 Checking hot water generation

(VUW boilers only)

> Switch on the boiler.

> Open a hot water valve all the way.

> Activate the Live monitor (¬section13.2.1).

If hot water generation is working correctly, the display

shows "S.14". The displayed status code is also explained by

the plain text display "DHW mode: Burner on".

S.14

DHW mode

Burner on

Back

10.10 Display during hot water generation (VUW boilers only)

10.12.3 Checking hot water generation

(VU boilers only)

> Switch on the boiler.

> Switch on the connected domestic hot water cylinder.

> Make sure that the cylinder thermostat is requesting

heat.

> Activate the Live monitor (¬section13.2.1).

If the cylinder is being charged correctly, status code "S.24"

appears in the display. The status code that is displayed is

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Vaillant ecoTEC plus 837 Service Manual Page 47

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