Buderus GB402-320-5, Инструкции по установке и обслуживанию для подрядчиков

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10 Inspection and servicing
Logano plus GB402 – 6 720 820 700 (2018/01) 40
10.8.2 Changing the gas filter
▶ Shut down the heating system (

Chapter 8.1, page 32)
▶ Close the main gas shut-off valve or gas isolator and secure against
unintentional re-opening.
▶ Remove the front panel (

Chapter 10.1, page 32).
▶ Undo both screws [4] from filter cover [3] underneath the gas valve.
▶ Remove filter cassette [1] and insert a new one.
▶ Insert new gasket [2] at the filter cover and refit using both screws.
Fig. 58 Changing the gas filter
[1] Filter cassette
[2] gasket
[3] Filter cover
[4] screw
▶ For completing maintenance see

Chapter 10.9, page 41.
10.8.3 Removing the fan
▶ Shut down the heating system (

Chapter 8.1, page 32)
▶ Close the main gas shut-off valve or gas isolator and secure against
unintentional re-opening.
▶ Remove the front panel (

Chapter 10.1, page 32).
▶ Undo the electric plug-in connections at the fan.
▶ Pull out the burner (

Chapter 10.6.1, page 36).
▶ Remove the gas valve (

Chapter 10.8.1, page 39).
▶ Undo clips [3] at the ventilation air collector and pull off front
semi-shell [4] from its studs.
▶ Also remove impeller [2] and fan inlet [1] (at 320 kW: fan inlet [5]
with adaptor [6]) from the studs.
Fig. 59 Dissembling the components of the ventilation air collector
[1] Fan inlet 395-620 kW
[2] Impeller
[3] Clamp
[4] Front semi-shell
[5] Fan inlet 320 kW
[6] Fan inlet adaptor 320 kW
▶ Remove rear semi-shell [1].
Fig. 60 Removing the rear semi-shell
[1] Rear semi-shell
▶ Remove mounting plate [1] from the fan.
▶ Undo both rear screws [3] (joint between carriage [2] and fan [5]
(do not remove).
▶ Support the fan and remove both front screws [4].
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