Combustion Chamber; Pipework Connections - Bosch Worcester Greenstar Utility 32/50 Installation, Commissioning And Servicing Instruction Manual

Installation
5.4

Combustion chamber

Secondary heat exchanger:
Refer to figure 31
1. Remove the seven screws [1] securing the flue manifold access
cover [2].
▶ Check that all the baffles and retainer [3] are correctly fitted to the
secondary heat exchanger:
▶ Check there is a gap between bottom of the dip tube [4] and the flue
manifold.
3
1
2
Fig. 31
Combustion chamber
Refer to figure 32
2. 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 and
seated properly
3. Remove any transit packaging and ensure that the baffle [4] is
correctly fitted.
4. Refit combustion chamber door [2].
IMPORTANT: Secure with nuts and washers [1] and tighten
gradually in a rotating sequence, as shown in figure 32.
Do not over tighten the nuts.
24
1
3
6
4
2
4
3
2
4
1
Fig. 32
5.5

Pipework connections

CAUTION: Isolate the oil and water mains supply before
starting any work and follow all relevant safety
precautions.
Refer to figure 33
Water connections
▶ Remove any transit bungs from the pipework connections on the
appliance.
Surplus water may be present, in the appliance, due to
factory testing.
▶ Ensure all pipework is clean.
▶ Align water pipework and connect to [1] and [2].
▶ Check that the unused socket have been capped.
Oil supply connections
▶ Route oil supply pipe [8] along the side of the appliance as required,
finishing close to the burner. Avoid hot surfaces.
▶ Connect the oil supply pipe [8] to the isolating valve [7], ensure the
valve is closed.
Replace flexible hose at annual service to prevent
possible oil leakage.
▶ Connect the flexible oil hose to the isolating valve [7].
Condensate connection
▶ Connect 21.5mm polypropylene pipe [4] (not supplied) to the
condensate waste pipe [5] flexible push fit connector and terminate
to waste.
▶ Do not use any solvents, adhesives or lubricants when pushing the
pipe into the rubber connector.
▶ Ensure that the condensate pipe runs away from the appliance at a
constant fall of 50mm (min.) for every metre.
▶ Seal all condensate pipe joints.
5
6720821751-11.1Wo
Greenstar Utility ErP - 6 720 821 751 (2018/04)