Wolf COB Series Maintenance Instructions Manual page 10

Central
connector
Cleaning brush
Seal ring for oil/
air connection
Combustion
chamber lid
36. Refit combustion chamber lid and secure with three wing
screws.
37. Check oil/air connection seal ring for damage and
replace if necessary.
38. Take the burner unit out of the maintenance position and,
with the mixing appliance at the front, slide it carefully
into the combustion chamber, making sure you check on
the position of the oil/air connection seal ring.
39. Rotate the burner unit approx. 1 cm to the left and secure
with three 6 mm Allen screws.
40. Plug in central connector.
41. Flip up the control unit.
42. Replace the upper casing lid.
43. Hook in the front casing at the bottom and secure with
the screws at the top (left and right).
Before restarting:
44. Check the system pressure, and top up heating water if
required.
45. When you notice a loss of water, check the expansion
vessel inlet pressure and increase it, if required, to
0.75 bar. The heating circuit must be at zero pressure.
Fill the system.
Restart / flue gas test
46. Reset the MCB.
47. Switch on the oil condensing boiler at the ON/OFF
switch.
48. To test flue gas emissions, set the temperature selector
to emissions test mode.
Emissions test mode position
49 Carry out an inlet air test.
If the CO > 0.2%, check that there are no leaks in
2
the flue:
"Flue gas" test port
10
4. Maintenance procedure
50. Flue gas test
Carry out the test in emissions test mode and enter the values
in maintenance report.
Re-adjust the CO
HG00, pipe length adjustment)
(see installation instructions).
Boiler
COB-15
COB-20
COB-29
COB-40
51. Check control accessories.
Checking the protective anode on
the TS / CS stratification cylinder
52. Pull the cable away from the lug.
53. Test the current between the lug and the cable.
54. If the current is < 0.3 mA, check the anode and replace it
"Inlet air" test
port
55. Reaffix the cable to the lug.
content, if required (BM - parameters, boiler
2
Oil nozzle
Danfoss 0,30/80°S
Danfoss 0,40/80°S LE
Danfoss 0,55/80°S LE
Danfoss 0,65/80°S LE
Danfoss 0,55/80°S LE
CO set value, boiler closed stage 1 and stage 2
2
CO max.13,5 ± 0,3%
2
O min. 2,7 %
2
The display must show BUS connection
Protective
anode at the
front top of
the cylinder
The current must be > 0.3 mA.
(Test only works when the cylinder has been filled.)
if necessary.
(Protective anode, insulated, CS part no. 24 83 629).
Release the cylinder pressure before replacing the
anode. Switch off the DHW circulation pump, shut off the
DHW and turn on a tap inside the house.
Pump pressure
Stage 1 Stage 2
5,0 ± 1,0 bar 12,0 ± 2,5 bar
8,5 ± 1,0 bar 16,8 ± 2,5 bar
8,5 ± 1,0 bar 16,8 ± 2,5 bar
9,8 ± 1,0 bar 18,0 ± 2,5 bar
11,0 ± 1,0 bar 23,5 ± 2,5 bar
3062549_201510