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Worcester-Bosch Greenstar Danesmoor Utility Regular - Utility System Manual

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Commissioning
Greenstar Danesmoor Utility 2022+ and Utility System 2022+ - 6 721 846 263 (2022/01)42
Fig. 63 Priming the pump
[1] Oil supply
[2] De-aerator
[3] Return
[4] Flow
[5] Spare flexible oil hose
[6] Container of oil
[7] Oil pump flexible inlet hose
[8] Bleed and pressure gauge port
▶ Switch off the boiler.
▶ Safely dispose of the container/discharge.
6.4.3 Pump adjustments
▶ Fit a suitable pressure gauge to port [3] on the oil pump.
▶ Switch on the boiler and set a heating demand.
Fig. 64 Oil pump ports/connections
[1] Vacuum gauge port
[2] Pressure adjuster
[3] Bleed and pressure gauge port
[4] Return connection
[5] Inlet connection
[6] Auxiliary pressure gauge port
▶ Adjust the air shutter [3] figure 65 and pump pressure [2]
figure 64 to the values shown in the table 10 on page 44.
The burner should ignite following a pre-ignition period of
approximately 15 seconds.
▶ If changing the burner output, check the position of the air damper
disk [5] is correct to the output values shown in table 10.
Fig. 65
[1] Reset button
[2] Blast tube
[3] Air shutter adjuster
[4] Captive screws air intake cover
[5] Air damper disk
6.4.4 Burner head setting
Adjustments to the burner head are made on the basis of the required
output, refer to table 10 for the required setting for your boiler.
Fig. 66 Burner head adjustment thumbwheel
One complete rotation clockwise (cw) from the minimum position
equals approximately one millimetre. Adjust the thumb-wheel to achieve
the setting indicated in the table 10, according to your appliance model
and output.
Using an engineer’s rule or vernier gauge measure from the lip of the
blast tube to the inside of the break plate as show in the figure below.
Ensure that the break plate is level, check at four equal points to get an
average of the required setting. The setting tolerance should be no more
than 0.25mm
Adjust position of air damper discs to suit burner output
(see table 10 on page 44), located as shown in
figure 65. Access by undoing the two screws [4] to
release the air inlet cover.
3
4
2
5
7 3
1
6
6720813288-04.2Wo
8
6720809437-33.2Wo
3
1
2
6
5 4
6720821683-15.2Wo
12
4
5
3
6720821683-24.1Wo
… 42 …


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