Checking For Tightness Of The Flue Gas Installation And Flue Gas Recirculation; Checking The Gas Flow Rate - Vaillant ecoTEC SERIES Instructions For Installation And Servicing
Wall hung room sealed fan assisted condensing boiler
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Also See for ecoTEC SERIES:
- Installation manual (68 pages) ,
- Operating manual (20 pages) ,
- Instructions for use manual (17 pages)
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If the boiler version corresponds to the local gas family:
• Proceed as described below.
If the boiler version does not correspond to the local
gas family:
• Perform the gas conversion in accordance with the
gas conversion kit 0020010641.
• Adjust the gas setting as described below
(see sections 5.9.1 to 5.9.3).
The combustion of this boiler has been checked,
adjusted and preset at the factory for operation on the
type of gas defined on the identification plate. No
measurement of the combustion is necessary to set up
the boiler.
• Do not adjust the multifunctional automatic gas valve.
• Ensure
- that the boiler has been installed in accordance with
these instructions,
- the integrity of the flue system and the flue seals,
as described in the flue installation instructions
enclosed with this boiler, and as described below,
- a visual check is carried out on the boiler
combustion circuit and the relevant seals,
- that any defects have been corrected at this stage.
To further validate the integrity of the flue system and
confirm correct operation of the boiler it is possible to
conduct flue gas and air measurements on this boiler -
for details see section 5.9.1.
Proceed to put the boiler into operation as follows:
• Check the maximum gas flow rate as detailed in
section 5.9.2.
• Check the gas inlet working pressure as detailed in
section 5.9.3.
• Note that you must re-measure the gas flow rate or
the gas inlet working pressure, if changes were
required to correct any issues found.
5.9.1 Checking for tightness of the flue gas
installation and flue gas recirculation
• Check the integrity off the flue gas installation
according to TB 200.
• Should the flue gas installation be longer than 2 m we
strongly recommend to check the system for flue gas
recirculation as described below.
Commissioning Part I 5
1
2
Fig. 5.7 Flue gas and air measure points
Legend:
1
Flue gas measure point
2 Air measure point
• For checking the system for recirculation use the air
measure point (2).
• Use the flue gas analyser.
• If you detect any CO or CO
in the fresh air, search for
2
the flue gas leakage or recirculation.
• Correct the defects.
• Check again as described before, if there is any CO or
CO
in the fresh air.
2
• If you cannot correct the defects you must not start
up the boiler.
5.9.2 Checking the gas flow rate
The boiler is fitted with a multifunctional automatic gas
valve which ensures that the precise air/gas ratio is
provided under all operating conditions. The gas flow
rate has been set during production and does not
require adjustment. With the front casing fitted check
the gas flow rate of the boiler as follows:
• Start the boiler by activating the test program P.1 as
described in section 8.2.
• In addition, ensure that maximum heat can be
dissipated into the heating system by turning up the
room thermostat.
• Alternatively, for ecoTEC combination boilers fully
open the hot water taps to ensure full flow rate
through the boiler.
• Wait at least 5 minutes until the boiler has reached its
operating temperature.
• Ensure that all other gas appliances in the property
are turned off.
• Measure the gas flow rate at the gas meter.
• Check that the gas flow rate is as stated in Table 5.1.
Page 35
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