52 | Service and spares AU/NZ
6 720 646 195a (2010/11)
Refer to figure 92.
1. Release the clip.
2. Move the lower exhaust connector up
B Remove the complete exhaust assembly.
Fig. 92 Release lower exhaust connection
Refer to figure 93.
1. Unscrew the plastic nut.
2. Remove the nut from the bottom of the boiler.
3. Rotate lever to release the return pipe.
Fig. 93 Release the sump
Refer to figure 94.
1. Lift the heat exchanger up to clear.
2. Move the heat exchanger forward from the case.
Fig. 94 Heat exchanger removal
B Reassemble and check combustion as stated in the
gas conversion section. 6.6.
6720643895-71.1Wo
2.
1.
2.
1.
3.
6720644743-26.1Wo
NOTE: CO/CO
2
checks
B If the joint between the air/gas manifold
and heat exchanger is disturbed the
sealing gasket must be replaced .
B After completing the service of the boiler,
the CO/CO
2
must be checked and set to
the limits shown in “setting the air/gas
ratio” on page 43.
6720643895-115.1Wo
1.
2.
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