Vailant ecoTEC plus 937, Installation And Maintenance Instructions Manual, Page: 49 / 80

Installation and maintenance instructions ecoTEC plus 937 0020031552_06
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We recommend the conclusion of an inspection and
maintenance contract with an approved company or
installer.
The inspection serves to determine the actual condition
of the respective boiler and compare it with the speci-
fied condition. This is done by measuring, checking and
observing.
Maintenance is required in order to eliminate any devia-
tions of the actual condition from the specified condi-
tion.
This normally is done by cleaning, adjustment and, if
neces-sary, replacing individual components that are
subject to wear.
You must carry out an annual inspection of the
Vaillant ecoTEC.
It is possible to perform a quick, accurate inspection
without removing components by requesting data from
the DIA system, carrying out the simple visual checks
indicated in Table 8.2 and performing a flue gas meas-
urement.
The maintenance intervals (at least once every 5 years)
and their scope are determined by the heating engineer
based on the condition of the boiler found during the
inspection.
All inspection and maintenance work should be per-
formed in the order specified in Table 8.2.
a
Danger!
Possible poisoning and burning by escaping
hot flue gases!
It is possible that hot flue gases escape and
could result in poisoning or burning, if the
boiler is operated
-
without a completely installed air/flue
gas duct
- with an opened air/flue gas duct
- with internal leakages and an opened
front casing.
Operate the boiler
- for commissioning
- for testing purposes
- in continuous mode
only with closed front casing and com-
pletely mounted and closed air/flue gas
duct.
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8.1.1 General inspection and maintenance
instructions
To ensure the faultless operation, long term availability
of all functions and long working life of your Vaillant
boiler and to prevent modifications to the approved
series status only genuine Vaillant spare parts must be
used when carrying out inspection, maintenance and
repair work.
For an overview of the available original Vaillant spare
parts, contact the Vaillant sales office on
01634 292310.
During any inspection and maintenance or after change
of parts of the combustion circuit, the following must be
checked:
The appliance has been installed in accordance
with the relevant installation instructions.
The integrity of the flue gas installation and flue
seals is in accordance with the relevant flue instal-
lation instructions enclosed.
Visual, the integrity of the boiler combustion cir-
cuit and relevant seals.
The gas inlet working pressure at maximum rate as
described in section 6.9.3.
The gas flow rates as described in section 6.9.2.
Correctness of electrical, water and gas connec-
tions.
Correctness of the water pressure.
The condition of the whole system, in particular
the condition of radiator valves, evidence of leak-
age from the heating system and dripping taps.
Correct any faults before proceeding.
8.1.2 Safety instructions
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Danger!
Danger of life and limb by electric shock!
The supply terminals of the boiler are under
mains voltage even if the boiler main switch
is off.
Don’t touch the supply terminals.
Protect the electronic box from any water
or spray.
Before working on the boiler, turn off the
power and secure against restart.
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If it is necessary to keep the electricity to the
boiler switched on for certain inspection and
maintenance, this is indicated in the description
of the maintenance task.
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Inspection and maintenance 8