Viessmann D2RA, Инструкция по установке для подрядчиков

Страница: 58 / 164

58
If the actual CO
2
or O
2
values lie outside their respec-
tive ranges, proceed as follows:
■ Check the balanced flue system for tightness; see
page 50.
■ Check the ionisation electrode and connecting cable;
see page 53.
Note
During commissioning, the combustion controller car-
ries out an automatic calibration. Allow approx. 30 s
after the burner has started before testing the emis-
sions.
1. Connect a flue gas analyser at flue gas port
A
on
the boiler flue connection.
A
Fig. 45
2. Open the gas shut-off valve, start the appliance
and create a heat demand.
3. Select the lower heating output (see following
chapter).
4. Check the CO
2
content. Should the actual value
deviate from the aforementioned ranges by more
than 1 %, implement steps detailed on page 58.
5. Enter the actual value into the report.
6. Select the upper heating output (see following
chapter).
7. Check the CO
2
content. Should the actual value
deviate from the aforementioned ranges by more
than 1 %, implement steps detailed on page 58.
8. After testing, press OK .
9. Enter the actual value into the report.
Selecting the upper/lower heating output
Service menu
1. Press
OK and
å
simultaneously for approx. 4 s.
2. "System functions"
Service mode is being prepared, which can take
approx. 10 min
3. "Actuator test"
4. Select the lower heating output:
Select "Base load OFF" . Then "Base load ON"
appears and the burner operates at its lower heating
output.
5. Select the upper heating output:
Select "Full load OFF" . Then "Full load ON"
appears and the burner operates at its upper heat-
ing output.
6. End output selection:
Press
ä
.
Checking the flue system for unrestricted flow and tightness
Checking the flue gas routing
Checking the external LPG safety valve (if installed)
Commissioning, inspection, maintenance
Checking the combustion quality
(cont.)
5678 044 GB