Electrode Assembly And Burner; Heat Exchanger - Worcester GREENSTAR 24i Junior Installation Instructions Manual

6.8.9

ELECTRODE ASSEMBLY AND BURNER

Refer to figure 96.
B Disconnect spark electrodes and flame sensor
connection.
B Remove clamping plate.
1. Remove spark/flame electrode assembly from heat
exchanger.
2. Remove the seal from the top of the heat exchanger.
3. Remove the burner.
B Replace new burner in correct position.
B Ensure that burner tabs, as shown in figure 96, fit
correctly their respective locations.
NOTICE: Heat exchanger seal
B If the joint between the Air/Gas manifold
and heat exchanger is disturbed the
sealing gasket must be replaced.
B After re-assembly the combustion must
be checked using the procedure in the
section 6.6 "Setting the Air/Gas ratio".
B Ensure that the seal is fitted.
CAUTION: Clamping plate
B Ensure that the clamping plate is firmly
tightened down on top of the heat
exchanger.
B Replace the clamping plate.
1.
3.
Fig. 96 Electrode assembly and burner
6 720 644 741a (2010/10)

6.8.10 HEAT EXCHANGER

B Isolate flow and return valves then drain the boiler.
B Remove syphon.
B Remove the air/gas manifold and fan.
Refer to figure 97.
1. Remove the clip from plastic elbow on the flow pipe.
2. Pull flow pipe away from heat exchanger.
Fig. 97 Flow pipe removal
Refer to figure 98
1. Remove the three screws securing the turret to the
top of the boiler.
2. Turn the upper exhaust connector anticlockwise to
release from the hook.
3. Pull the upper exhaust connector down.
2.
Fig. 98 Upper exhaust assembly
SERVICE AND SPARES
2.
1.
1.
3.
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