Bosch Worcester Greenstar CDi Classic System ErP Series - Heat Exchanger Removal

SERVICING AND SPARES
6 720 815 724 (2015/11)46
Fig. 82 Release air/gas manifold
3. Remove air/gas manifold (I)
Fig. 83 Air/gas manifold
4. Open air/gas manifold (I).
▶ Carefully withdraw diaphragm (J) from fan intake tube and check for
soiling and splits.
Fig. 84 Diaphragm
15. Burner
▶ Remove the burner (H).
▶ Replace new burner in correct position.
▶ Ensure that a new seal (K) is used, refer to fig. 84.
Fig. 85 Burner removal
16. Heat exchanger
▶ Isolate flow and return valves and drain the boiler.
▶ Remove condensate trap (see page 44).
▶ Remove fan assembly (see page 45).
1. Remove plastic nut (A) from the base of the inner casing
Fig. 86 Heat exchanger removal 1
2. Remove return pipe at the bottom of heat exchanger.
Fig. 87 Heat exchanger removal 2
3. Remove screw at the top of the heat exchanger (C).
▶ Unscrew the flow pipe (D).
F
C
D
2.
6 720 812 175-16.1O
H
G
EE
3.
6 720 812 175-17.1O
J
I
K
I
4.
6720647361-66.1Wo
H
6 720 812 175-29.1O
A
1.
6720647361-67.1Wo
B
2.
6 720 812 175-33.1O