Bosch Worcester Greenstar Utility 32/50 - Combustion Chamber

Inspection and maintenance
Greenstar Utility
ErP -
6 720 821 751 (2018/04)36
▶ Identify the protruding lower edge [3] of the heat exchanger
Fig. 53 Protruding edge
▶ Present the lower edge of the flue manifold [4] to the lower edge of
the heat exchanger and ensure that the flue manifold edge [4] is
located under the protruding edge [3] of the heat exchanger
Fig. 54 Locate on bottom edge
▶ With lower edge of the flue manifold in place, rotate the manifold up
to the heat exchanger ensuring that the lip [5] on the flue manifold is
on top of the heat exchange as shown in figure 55.
Fig. 55 Locate lip of flue manifold
▶ Tighten the four bolts [6] gradually in a rotating sequence until the
flue manifold is securely seated on the Heat exchanger.
Fig. 56 Tighten bolts
7.3.3 Combustion chamber
▶ Remove the six retaining nuts and washers [1].
▶ Remove combustion chamber access door [2]
▶ Check that the combustion chamber seal [3] is in good condition
replace if necessary.
▶ Remove the baffle [4], check the condition of the baffle, clean or
replace as necessary.
▶ Thoroughly clean all of the heat exchanger surfaces using a suitable
brush and clear all loose debris from the combustion chamber.
▶ Refit the baffle, ensuring it is fitted correctly.
▶ Check the condition of the combustion chamber access door
insulation. If the insulation is damaged the door assembly must be
replaced.
▶ Refit combustion chamber door [2].
IMPORTANT: Secure with nuts and washers [1] and tighten
gradually in the sequence shown in figure 57, do not over tighten the
nuts.
Fig. 57
3
6720821751-53.1Wo
6720821751-54.1Wo
4
3
5
6720821751-55.1Wo
6
6
6
6
6720821751-56.1Wo
4
3
2
1
6720821751-11.1Wo
1
2
3
4
6
5