Viessmann B0KA, Инструкция по установке и обслуживанию

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41
For multiple connection, in the commissioning assis-
tant use "C.5" and "C.6" to match the burner setting
to the flue system. See page 30.
System conditions:
■ Shared flue in shaft
7
100 mm
■ Balanced flue connection pipe from boiler to shaft,
7
80/125 mm
■ Minimum shaft cross-section
– Square: 175 x 175 mm
– Round:
7
195 mm
■ Height between floors min. 2.5 m
■ Max. 6 boilers with the same rated heating output
connected to the flue system
Removing the burner
Danger
Contact with live components can lead to seri-
ous injury from electric current. Some compo-
nents on PCBs remain live even after the power
supply has been switched off.
■ Never touch the wiring chambers (control unit
and power supply connections).
■ When working on the appliance, isolate the
system from the power supply, e.g. at a sepa-
rate MCB/fuse or a mains isolator. Check the
system is no longer live and safeguard against
reconnection.
■ Prior to working on the appliance, wait at
least 4 min until the voltage has completely
dropped out.
A
B
C
D
E
F
4x
Fig. 28
1. Turn off the ON/OFF switch.
2. Close the gas shut-off valve and safeguard against
reopening.
3. Disconnect cables and leads from:
■
Fan motor
A
(2 plugs)
■ Ionisation electrode B
■ Ignition unit C
■ Earth
D
4. Undo gas supply pipe fitting
E
.
5.
Undo 4 screws F and remove the burner.
Note
Cover gas connection
E so that no small parts
can fall into it.
Commissioning, inspection, maintenance
Burner adjustment when connecting multiple…
(cont.)
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