Maximum Output Measurements; Maintenance And Customer Service; Maintenance; Vaillant Service - Vaillant ecoCRAFT VKK GB SERIES Operating Manual

4.9.3 Maximum output measurements

Note!
h
The measurement and checking work described
in this section are only carried out by your
chimney sweep.
7
Fig. 4.13 Switching on the maximum output mode
To perform the measurements, proceed as follows (see
Fig. 4.13):
• ctivate the maximum output mode by pressing the
„+" (6) and „-" (7) buttons on the DIA system simul-
taneously.
Display:
S.Fh = Maximum output mode - heating
S.Fb = Maximum output mode - hot water
• Do not perform the measurements until the unit has
been operating for at least 2 minutes.
• Unscrew the cover caps from the test openings.
• Perform measurements in the flue gas duct at the test
connector. Measurements in the air duct can be made
at the test connector.
• You can quit the measurement mode again by pressing
the „+" (6) and „-" (7) buttons simultaneously.
The measurement mode will also be terminated if
15 minutes pass without any buttons being pressed.
• Screw the cover caps back on to the test openings.
Operating manual ecoCRAFT 0020058717_03
6
4.10

Maintenance and Customer Service

4.10.1 Maintenance

Permanent operational readiness and safety, reliability
and a long service life require inspections and mainte-
nance work to be carried out annually by a heating en-
gineer.
d Danger!
Danger of property damage and personal injury
from improper handling!
Never attempt to perform maintenance or re-
pairs on the gas-fired condensing boiler by
yourself.
Use an approved qualified servicing company
for this work. We recommend making a mainte-
nance agreement.
The operational reliability of the device can be
impaired, resulting in damage to property or
personal injury, if maintenance work is not car-
ried out.
Regular servicing ensures maximum efficiency and thus
economical operation of your gas-fired condensing boil-
er.

4.11.2 Vaillant Service

To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agree-
ment. Please contact Vaillant Service Solutions
(0870 6060 777) for further details.
Operation 4
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