Viessmann VITOPEND 200 Installation And Service Instructions Manual page 38

Initial start-up, inspection, maintenance
Further details regarding the individual steps
7. Check the CO or O
2
tent. Record actual values in the
service report on page 121.
8. Press d.
Operation with the upper rated out-
put is terminated.
Maintain limits to EN 483 and EN 297
(CO content < 1000 ppm).
Checking the ionisation current
A Adaptor cable (available as
accessory)
1. Connect the test instrument
according to the above diagram.
38
and CO con- If the actual value falls outside the
2
permissible range, check the follow-
ing:
&
Balanced flue system for soundness
(see page 29).
&
Static and supply pressure (see
page 24)
&
Nozzle pressure (see page 26)
2. Adjusting the upper output:
3. Ionisation current when the flame is
(cont.)
Constant temperature control
unit:
K + d press simultaneously:
"1" is shown on the dis-
play.
a
press:
"2" is shown on the dis-
play.
Weather–compensated control
unit:
K + d press simultaneously:
"Relay test" is shown in
the display.
a
press:
"Full load" is shown in the
display.
first established: min. 4 µA
Steps in case the ionisation current
is < 4 µA:
&
Check the electrode gap (see
page 34).
&
Check the control unit power sup-
ply.