Checking The Burner; Checking The Non-Return Valve In The Air-Gas; Manifold - Bosch Worcester Greenstar 8000 Series Installation And Maintenance Instructions Manual

Inspection and maintenance
8.9.1

Checking the burner

1. Remove the combustion cover  Fig. 62.
2. Unscrew the screws on the burner cover.
3. Remove the burner cover.
1.
Fig. 76 Removing the burner cover
▶ Remove the burner and clean its components.
Fig. 77 Burner
▶ Reinstall the burner in reverse order, including a new gasket.
▶ Install the burner and the burner cover.
▶ Check the gas/air ratio.
58
8.9.2
1. Unscrew the screws at the air-gas manifold.
2. Remove the air-gas manifold.
1.
1.
2.
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Fig. 78 Removing the air-gas manifold
1. Remove the non-return valve.
2. Check the non-return valve for contamination and cracks.
1.
Fig. 79 Non-return valve in the air-gas manifold
▶ Install the non-return valve.
▶ Install the air-gas manifold.
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Checking the non-return valve in the air-gas manifold
1.
2.
Greenstar 8000 Style – 6720883855 (2019/01)
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2.
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