Checking The Gas Inlet Working Pressure - Vaillant ecoTEC SERIES Instructions For Installation And Servicing

5 Commissioning Part I
Nominal net heat
Boiler input in kW
as per BS EN 483
ecoTEC plus 612
ecoTEC plus 615
ecoTEC plus 618
ecoTEC plus 624
ecoTEC plus 630
ecoTEC plus 637
ecoTEC plus 824
ecoTEC plus 831
ecoTEC plus 837
ecoTEC pro 24
ecoTEC pro 28
Table 5.1 Gas flow rates
• If the measured gas flow rate lies outside the toler-
ance limits specified in Table 5.1, do not operate the
boiler and inform the Vaillant Service Solutions
(0870 6060 777).
If the measured gas flow rate is within the tolerance
limits shown in Table 5.1, then proceed as follows:
• Take the boiler out of operation by
- Pressing the + and i buttons simultaneously and
turn down both thermostat control knobs.
- Only for combination boilers: Allow the boiler to cool
down by turning off water taps and allow pump
overrun to operate for a minimum of two minutes.
• Record the boiler maximum gas flow rate onto the
Benchmark gas boiler commissioning checklist.
36
Natural gas in m
nominal
12.2 1.29
15.3 1.62
18.4 1.95
24.5 2.59
30.6 3.24
37.8 4.00
23.5 2.49
31.6 3.34
37.8 4.00
23.5 2.49
28.6 3.03
Gas flow rate
3
/h
+ 5% - 10%
1.36 1.16
1.70 1.46
2.04 1.75
2.72 2.33
3.40 2.91
4.20 3.60
2.61 2.24
3.51 3.01
4.20 3.60
2.61 2.24
3.18 2.72

5.9.3 Checking the gas inlet working pressure

• Ensure that the gas inlet working pressure can be
obtained with all other gas appliances in the property
working.
• Remove the front casing from the boiler.
• Close the gas isolation valve of the boiler.
Fig. 5.8 Measuring the gas inlet working pressure
• Loosen the sealing screw marked "in" (1) on the gas
valve.
Instructions for installation and servicing ecoTEC 839592_12
Propane in kg/h
nominal + 5%
0.95 1.00
1.19 1.25
1.43 1.50
1.90 2.00
2.38 2.50
2.94 3.08
1.83 1.92
2.45 2.58
2.94 3.08
1.83 1.92
2.22 2.33
- 10%
0.85
1.07
1.29
1.71
2.14
2.64
1.64
2.21
2.64
1.64
2.00
1
2