Viessmann Vitocrossal 100 CI1, Инструкции по обслуживанию для подрядчиков

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26
1. Remove the motorised lever from the mixer han-
dle.
2. Check the mixer for ease of operation.
3. Check the mixer for leaks. In the event of a leak,
replace the O-rings.
4. Click the motorised lever into place.
Checking all connections on the heating water and DHW sides for leaks
Checking the safety valve function
Installing the burner
Refit the burner in reverse order to the removal.
■ Burners up to 80 kW see page 15.
■ Burners 120 to 160 kW see page 16.
■ Burners from 200 kW see page 17.
Insert the burner. Secure screws by hand. Tighten
screws diagonally, torque 10 Nm.
Checking the firm seating of electrical connections
Checking all gas equipment for tightness at operating pressure
Danger
Escaping gas leads to a risk of explosion.
Check all gas equipment for tightness.
Note
Only use suitable and approved leak detection agents
(EN 14291) and devices for the tightness test. Leak
detection agents with unsuitable constituents (e.g.
nitrides, sulphides) can cause material damage.
Remove residues of the leak detection agent after test-
ing.
Checking the combustion quality
The electronic combustion controller automatically
ensures optimum combustion quality. During commis-
sioning/maintenance, only the combustion values need
to be checked. For this, check the CO
2
or O
2
content.
For a description of the electronic combustion control-
ler functions, see page 115.
Note
To prevent operating faults and damage, operate the
appliance with uncontaminated combustion air.
CO
2
or O
2
content
■
The CO
2
content must be within the following limits
for the lower and upper heating output respectively:
–
7.7 to 9.2 % for natural gas E and LL
■
The O
2
content must be between 4.4 and 6.9 % for
all gas types.
If the actual CO
2
or O
2
values lie outside their respec-
tive ranges, proceed as follows:
■
Check the ionisation electrode and connecting cable;
see page 21.
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.
Commissioning, inspection, maintenance
Checking the mixer for ease of operation and leaks
5792 925 GB