SSB 6720866940 (2017/11) US
Maintenance schedule & procedures | 25
[2] Disconnect the air inlet hose from Venturi of fan as shown below;
Fig. 63 Air inlet hose SSB85 - SSB120
Fig. 64 Air inlet hose SSB160
[3] Close the manual gas valve upstream to the boiler and then
disconnect the tting on gas pipe as follows;
Fig. 65 Gas tting SSB85 - SSB120
Fig. 66 Gas tting SSB160
[4] Remove the fan unscrewing the 4 nuts that x it to the heat
exchanger (see picture below showing 3 out of 4 nuts);
A
Fig. 67 Fan - 4 nuts
[5] Remove the fan;
Fan
Fig. 68 Fan
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