Vaillant ecoTEC plus 618 Spécifications télécharger pdf (Page 32)

32 Instructions for installation and servicing ecoTEC

Natural gas:

DO NOT proceed with adjustment or attempt to

put the unit into service if the inlet working

pressure lies outside the 17–25 mbar range.

LPG:

DO NOT proceed with adjustment or attempt to

put the unit into service if the inlet working

pressure is lower than 37 mbar.

• Turn off the appliance, remove U gauge.

• Tighten the test point screw and check for leaks.

• Record appliance working gas inlet pressure (mbar) in

the Benchmark gas boiler commissioning checklist.

5.9.3 Checking the gas rate

The boiler is fitted with a fully modulating automatic gas

valve which ensures that the precise air/gas ratio is pro-

vided under all operating conditions.

The gas rate has been set during production and does

not require adjustment.

The gas rate of the boiler should be checked with the

front case fitted as follows:

• Activate full gas rate mode by simultaneously pressing

the “+” and “–” buttons on the display system (for

ecoTEC combination boilers fully open the hot water

tap to maximum water flow rate).

• Wait at least 5 minutes, or until the boiler has reached

its operating temperature.

• With all other gas appliances turned off measure the

gas rate at the gas meter. Check that the gas rate is as

stated in Table 5.1.

Caution!

If the measured gas flow volume lies outside

the tolerance limits specified in Table 5.1, do not

operate the appliance and inform the Vaillant

Customer Service.

Appliance

Maximum net

heat input in kW

Gas rate

Natural gas in m3/h Propane in kg/h

nominal + 5% - 10% nominal + 5% - 10%

ecoTEC plus 612 12.2 1.30 1.37 1.17 0.95 1.00 0.86

ecoTEC plus 615 15.3 1.60 1.68 1.44 1.19 1.25 1.07

ecoTEC plus 618 18.4 1.90 2.00 1.71 1.43 1.50 1.29

ecoTEC plus 624 24.5 2.60 2.73 2.34 1.90 2.00 1.71

ecoTEC plus 630 30.6 3.20 3.36 2.88 2.38 2.50 2.14

ecoTEC plus 637 37.8 4.00 4.20 3.60 2.94 3.09 2.65

ecoTEC plus 824 23.5 2.50 2.63 2.25 1.82 1.91 1.64

ecoTEC plus 831 31.6 3.30 3.47 2.97 2.46 2.58 2.21

ecoTEC plus 837 37.8 4.00 4.20 3.60 2.94 3.09 2.65

ecoTEC pro 28 28.6 3.00 3.15 2.70 2.22 2.33 2.00

Table 5.1 Gas rates

5.10 Refitting the case

Fig. 5.14 Refitting the case

• Hook the top of the front casing over the lip on the

top of the boiler chassis and push the bottom of the

front casing into place.

• Ensure the spring retaining clips (2) engage correctly.

• Tighten case securing screw (1).

5 Commissioning Part I

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Vaillant ecoTEC plus 618 Spécifications Page 32

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