Worcester 29CDi GC 47-406-34 Installation, Commissioning And Servicing Instructions page 43

3. Remove air/gas manifold (I)
E E
3.
Fig. 63 Air/gas manifold
4. Open air/gas manifold (I).
B Carefully withdraw diaphragm (J) from fan intake tube and check for
soiling and splits.
4.
I I
Fig. 64 Diaphragm
15. BURNER
B Remove the burner (H).
B Replace new burner in correct position.
B Ensure that a new seal (K) is used, refer to fig. 64.
Fig. 65 Burner removal
16. HEAT EXCHANGER
B Isolate flow and return valves and drain the boiler.
B Remove condensate trap (see page 41).
B Remove fan assembly (see page 42).
6 720 803 599 (2012/06)
G
H
J
K
H
1. Remove plastic nut (A) from the base of the inner casing
1.
Fig. 66 Heat exchanger removal 1
2. Remove return pipe at the bottom of heat exchanger.
2.
B
Fig. 67 Heat exchanger removal 2
3. Remove screw at the top of the heat exchanger (C).
B Unscrew the flow pipe (D).
D
3.
Fig. 68 Heat exchanger removal 3
4. Undo flue connection (E) from sump (F).
B Pull flue pipe up.
B Remove the heat exchanger.
4.
E
F
Fig. 69 Heat exchanger removal 4
SERVICING AND SPARES
A
6720647361-67.1Wo
6720647361-68.1Wo
C
8.
6720647361-69.1Wo
6720647361-70.1Wo
43