(Starting The Appliance - Riello Rdb Burners) - Worcester GREENSTAR UTILITY 32/50 Instruction Manual

8 716 109 711 b 07.10 14/7/10
RIELLO
RDB OIL PUMP
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
USING 28sec KEROSENE:
OIL
PUMP
NOZZLE
PRESSURE
(p.s.i.)
Riello RDB 3.2 (32/50):
1.0 60°ES 100
1.10 60 ° S
130
1.35 60° S 135
Riello RDB 4.2 (50/70):
1.25 60° S 145
1.50 45° S 145
2.00 45° S 125
34
STARTING THE APPLIANCE
RIELLO RDB BURNERS
09:59 Page 34
C
B
A
APPROX
FUEL
APPROX.
COMBUSTION
FLUE
%CO
FLOW RATE AIR
GAS 2
SETTING
TEMP. SETTING
Kg/h l/h
( °C )
2.78 3.52 75 11.5 3.0
3.55 4.49 77 12.0 4.5
4.33 5.48 85 12.5 5.5
4.33 5.48 80 12.0 2.5
5.2 6.58 80 12.0 5
6.05 7.66 86 12.0 4.5
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR UTILITY 32/50 & 50/708 716
L
APPLIANCE
INPUT OUTPUT
HEAD
kW Btu/hr kW Btu/hr
3
33.4 114000 110000
4 42.7 146000 41 140000
5 52.1 178000 50 170000
1 178000
52.1 50 170000
2
62.5 213000 60 205000
3 249000 240000
72.9 70
STARTING THE APPLIANCE
RIELLO RDB BURNERS
2 Fit a suitable pressure gauge to port (A) on
the oil pump.
Adjust the air shutter (F) and pump pressure
(B) as shown in the table below. The
burner should ignite following a pre-ignition
period of approx. 15 seconds.
If changing the burner output, check the
combustion head sttings as shown in the
table below.
Boiler lockout indicator on:
If the burner fails to establish a normal firing
pattern or flame failure occurs the flame
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 lock-
out indicator/reset button (E).
Wait 2 minutes then press the lockout
indicator reset button (E) 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 (G).
If after-spurting occurs:
Release the burner retainer (H).
Remove the burner from the boiler and the
blast tube ( J ) from the burner to expose
the nozzle. Hold the burner vertical
to unscrew the nozzle ( I ) and fill the nozzle
holder ( K ) with kerosene.
Refit nozzle ( I ), blast tube ( J ) 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 ( L ) 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.
Check the CO levels and adjust the air
2
shutter (F) 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
for nozzle variations.
Turn off the electrical supply.
Isolate the oil supply to the burner.
Remove the oil pressure gauge.
Refit the blanking plug (A).
Check and rectify any oil leaks.
5 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,
2
adjust the air shutter setting (F) to obtain
the correct CO level.
2
Repeat the fine tuning procedure (5) if required.
Refit the sample point cap (L)(hand tighten
only, do not over tighten).
109 711B 07.2010