Bosch 12/18 Instruction Manual page 33

2
D
12/18 & 18/25
(under control box)
3
F
G
DANFOSS
BFP 11 L3 OIL PUMP
A
B
C
A - Bleed & pressure gauge port
B - Pressure adjustment
C - Vacuum gauge port
5
NOMINAL BOILER RATING AT NORMAL OPERATING
TEMPERATURE USING 28sec KEROSENE:
OIL PUMP FUEL
NOZZLE
PRESSURE FLOW RATE
(p.s.i.)
Kg/h l/h
12/18 - Bentone Sterling 40 Burner:
115 1.04 1.32
0.35 80°SR
0.45 80°S 115 1.29 1.63
140 1.55 1.96
0.50 80°ES
18/25 - Bentone Sterling 50 Burner:
130 1.56 1.98
0.50 80°EH
145 1.86 2.36
0.55 80°EH
0.65 80°EH 150 2.17 2.75
25/32 - Riello RDB Burner:
105 2.15 2.72
0.75 60°ES
0.75 60°ES 140 2.45 3.1
150 2.75 3.48
0.85 60°ES
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07)
E
K
RIELLO
SUNTEC
AS47C OIL PUMP RDB OIL PUMP
A
C
B
L
APPROX. APPROX.
FLUE GAS %CO AIR
2
TEMP °C
SETTING
kW
66 11.5 2.5 12.4
70 12.0 4.5 15.5
73 12.5 5.25 18.6
72 11.5 4.25 18.6
79 12.0 6.0 22.2
82 12.5 8.0 25.8
78 11.5 3.0 25.5
80 12.0 4.0 29.1
83 12.5 5.0 32.7
STARTING THE APPLIANCE
2 Remove plastic cover from the burner casing
(there is no plastic cover on the Riello burner).
(B) as shown in the table opposite. The
burner should ignite following a pre-ignition
period of approx. 15 seconds.
D
25/32
Boiler lockout indicator on:
(on top of burner
If the burner fails to establish a normal firing
control box)
pattern or flame failure occurs the flame
4
monitoring photocell mounted in the burner
body will alert the burner control box to shut
the burner down and provide a safe lockout
state indicated by the illumination of the
lockout indicator (E).
Wait 2 minutes then press the lockout
reset button (D) to initiate another start
sequence.
Repeat procedure until a flame is established.
3 Start and run for 3 minutes then switch off.
Check for after-spurting from the nozzle,
indicated by oil saturation on the combustion
head (F).
If after-spurting occurs:
Release the burner retainers.
Remove the burner, combustion head (F).
C
and electrodes, hold the burner vertical
to unscrew the nozzle and fill the nozzle
B
holder with oil.
Refit nozzle, electrodes, combustion
A
head (F) and the burner.
Restart and run for 3 minute intervals until
after-spurting stops.
4 Start and run for 20 minutes.
Remove sampling point plug (K) to check
the smoke reading is between 0-1. If the
smoke level is above 1, check the combustion
settings are correct and the oil nozzle is in
good condition.
Note; smoke readings may be inaccurate until
the smoke from burning organic binder in the
access door insulation has ceased.
L
Check the CO
shutter (L) setting according to the table
opposite.
Check the flue gas temperature is close to
the values shown in the table.
If the flue gas temperature is too high and the
baffles are correctly fitted, then reduce the oil
pump pressure (B) 5-10p.s.i. to compensate
APPLIANCE
for nozzle variations.
INPUT OUTPUT
Turn off the electrical supply.
Btu/hr kW Btu/hr
Isolate the oil supply to the burner.
Remove the oil pressure gauge.
Refit the blanking plug (A).
42300 12 40900
Check and rectify any oil leaks.
52900 15 51200
5 Switch on the oil supply.
63500 18 61400
Switch on the electrical supply.
Restart the boiler and run for 5 minutes.
Recheck the CO
63500 18 61400
adjust the air shutter setting (L) to obtain
75750 21.5 73400
the correct CO
88000 25 85300
87000
25 85300
99300
28.5 97200
111600
32 109200
Fit a suitable pressure gauge to port (A) on
the oil pump.
Adjust the air shutter (L) and pump pressure
levels and adjust the air
2
levels and if required,
2
level.
2
STARTING THE APPLIANCE
32