Baxi Combi 200, Инструкция по установке и обслуживанию

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10.3.5 HMI control
1. Remove the screws from the link/timer
2. Hinge the control box downwards.
3. Disengage the optional timer plug and ease the cable out of its
housing.
4. Unclip the back cover of the control box and remove it.
5. Unplug the wire harness on the HMI control.
6. Release the clips securing the HMI control and remove it.
7. Fit the new HMI control and reassemble in reverse order ensuring all
plugs and cables are seated correctly.
Important
Ensure that wiring is correctly routed with no wires trapped during
reassembly.
10.3.6 Burner/combustion chamber door assembly
1. Remove the detection/spark electrode.
See
Detection/spark ignition electrode, page 57
2. Hinge the control box down.
3. Hinge down the air/gas cover and disconnect all wiring plugs from the
PCB, noting their positions. Close the air/gas cover.
4. Using a 10mm spanner/socket, undo the 4 nuts holding the
combustion chamber door cover to the heat exchanger.
5. Undo the gas valve nut (30mm A/F).
6. Draw the combustion chamber/burner door assembly with the air/gas
unit away.
7. Remove the two Torx T30 screws holding the combustion chamber/
burner door assembly to the air/gas unit and disengage the tab on the
cover from the air/gas unit.
8. Fit new combustion chamber/burner door assembly to the air/gas unit
and reassemble in reverse order.
10.3.7 Air/gas unit
1. Disconnect the electrode lead and earthing cable.
2. Hinge the control box down.
3. Hinge down the air/gas cover and disconnect all wiring plugs from the
PCB, noting their positions. Close the air/gas cover.
4. Disconnect the silencer from behind the air/gas unit.
5. Undo the gas valve nut.
6. Remove the two Torx T30 screws securing the air/gas unit to the
burner combustion chamber door assembly.
7. Push the flexible gas pipe downwards and ease the air/gas unit away
from the burner combustion chamber door assembly.
8. Fit the new air/gas unit to the burner combustion chamber door
assembly and reassemble in reverse order.
Important
Ensure the silencer is correctly positioned.
Setting the gas valve
Important
The CO
2
must only be checked and adjusted to set the valve if a
suitable calibrated combustion analyser is available, operated by a
responsible person.
Fig.55 HMI removal
1
1
2
2
PN-0000524
Fig.56 Removing the burner
PN-0000525
Fig.57 Removing the air gas unit
PN-0000526
10 Maintenance
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