Finish Commissioning Boiler Checks - Bosch WORCESTER Greenstar Heatslave II External 12/18 Installation, Commissioning And Servicing Instructions
Floor standing oil fired condensing combination boiler balanced flue
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- User instructions & customer care manual (20 pages)
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6.3.7
Finish commissioning boiler checks
APPLIANCE MUST BE SET TO CO
Air settings are approximate, as flue length and nozzle
variations will affect them.
Check the CO
levels, refer to table 9 and adjust the air shutter [4].
2
▶ Check the flue gas temperature is close to the values in table 9.
If the flue gas temperature is too high and the baffles are correctly fitted,
then reduce the oil pump pressure [2] 5-10 p.s.i. to compensate for
nozzle variations.
▶ Turn off the electrical supply.
▶ Isolate the oil supply to the burner.
▶ Remove the oil pressure gauge.
▶ Refit the blanking plug [1].
▶ Check and rectify any oil leaks.
3. Switch on the oil supply.
▶ Switch on the electrical supply.
▶ Restart the boiler and run for 5 minutes.
▶ Recheck the CO
levels and if required, adjust the air shutter
2
setting [4] to obtain the correct CO
Nominal boiler rating at normal operating temperature using Kerosene (Class C2)
Oil pump
Fuel flow
pressure
rate
Nozzle
bar
psi Kg/h
Greenstar Heatslave II 12/18 model
0.40 x 80° EH
8.5 123 1.12 1.38
0.40 x 80° EH 10.0 145 1.30 1.60
0.50 x 80° EH 10.0 145 1.54 1.90
Greenstar Heatslave II 18/25 model
0.50 x 80° EH 10.0 145 1.54 1.90
0.60 x 80° EH
8.8 128 1.84 2.28
0.65 x 80° EH
9.5 138 2.15 2.66
Greenstar Heatslave II 25/32 model
0.65 x 80° EH
9.8 142 2.15 2.66
0.75 x 80° EH 10.3 150 2.46 3.04
0.85 x 80° EH 10.0 145 2.78 3.44
Table 9 Combustion settings
Greenstar Heatslave II External
2022+ -
6 721 843 980 (2022/01)
LEVELS.
2
level.
2
Approx
flue gas
Combustion
CO
temp.
head settings
2
l/h
°C
%
mm
67
12.0
10.5
70
11.5
11
80
12.0
11.5
76
12.5
12.5
81
12.5
14
90
12.5
15
79
11.5
19
84
12.0
19
85
12.5
19
▶ Refit the sample point cap (hand tighten only, do not over tighten)
and refit the burner cover.
▶ Complete the oil boiler commissioning checklist at the back of this
manual.
3
2
Fig. 76
[1]
Bleed and pressure gauge port blanking plug
[2]
Pressure adjustment
[3]
Vacuum gauge port
[4]
Air shutter setting
Approx.
Input
Output
air
(appliance)
(appliance)
setting
kW
kW
2.3
13.2
13.0
1.75
15.3
15
2.5
18.3
18.0
1.5
18.3
18.0
2.25
21.9
21.5
3.25
25.5
25.0
3.5
25.5
25.0
4.25
29.1
28.5
4.75
32.7
32.0
Commissioning
1
4
6720821683-27.1Wo
Air damper
Flue
disc
damper
setting
Burner head
required
A
Yes
BX & recirculation tube
B
Yes
BX & recirculation tube
C
Yes
BX & recirculation tube
N/A
Yes
BX
N/A
Yes
BX
N/A
Yes
BX
N/A
No
BX
N/A
No
BX
N/A
Yes
BX
39
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