Checking The Gas Rate; Refitting The Case - Vaillant ecoTEC plus 612 Instructions For Installation And Servicing

Table of Contents

Advertisement

5 Commissioning Part I
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.
Maximum net
Appliance
heat input in kW
ecoTEC plus 612
12.2
ecoTEC plus 615
15.3
ecoTEC plus 618
18.4
ecoTEC plus 624
24.5
ecoTEC plus 630
30.6
ecoTEC plus 637
37.8
ecoTEC plus 824
23.5
ecoTEC plus 831
31.6
ecoTEC plus 837
37.8
ecoTEC pro 24
23.5
ecoTEC pro 28
28.6
Table 5.1 Gas rates
34
Supplied By www.heating spares.co Tel. 0161 620 6677

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).
3
Natural gas in m
/h
nominal
+ 5%
1.29
1.36
1.62
1.70
1.95
2.04
2.59
2.72
3.24
3.40
4.00
4.20
2.49
2.61
3.34
3.51
4.00
4.20
2.49
2.61
3.03
3.18
2
1
Gas rate
Propane in kg/h
- 10%
nominal
1.16
0.95
1.46
1.19
1.75
1.43
2.33
1.90
2.91
2.38
3.60
2.94
2.24
1.83
3.01
2.45
3.60
2.94
2.24
1.83
2.72
2.22
Instructions for installation and servicing ecoTEC
+ 5%
- 10%
1.00
0.85
1.25
1.07
1.50
1.29
2.00
1.71
2.50
2.14
3.08
2.64
1.92
1.64
2.58
2.21
3.08
2.64
1.92
1.64
2.33
2.00

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents