Worcester GREENSTAR CAMRAY EXTERNAL 12/18 Instruction Manual page 33

2
D
12/18
3
F
RIELLO
RDB OIL PUMP
A - Bleed & pressure gauge port
B - Pressure adjustment
C - Vacuum gauge port
NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE
USING 28sec KEROSENE:
OIL PUMP FUEL
NOZZLE
PRESSURE FLOW RATE
(p.s.i.)
Kg/h l/h
Boiler 12/18 RDB 1
0.40 60°ES 100 1.04 1.32
0.45 60°ES 120 1.28 1.63
0.55 x 8 0°EH 105 1.54 1.96
Boiler 18/25 RDB 2.2
0.55 x 8 0°EH 105 1.55 1.96
0.60 60°ES 138 1.84 2.33
0.75 80°ES 120 2.15 2.72
Boiler 25/32 RDB 2.2
*0.65 80°EH 140 2.15 2.72
0.75 80°EH 125 2.37 3.0
0.85 80°EH 125 2.58 3.27
* 25/32 model for 25kW remove the plastic air guide (see following page ).
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR CAMRAY EXTERNAL 12/18-18/25-25/32
8 716 112 700a (02.07)
D
Adjust position of air damper discs to suit
burner output (see chart below), located as
above. Access by removing the two star
18/25
screws (SC) to release the air inlet manifold.
4
K
G
5
C
B
A
D
APPROX. APPROX.
INPUT
%CO
FLUE GAS AIR
2 (APPLIANCE)
TEMP °C SETTING
kW
63 11.5 2.25 12.3
67 11.5 2.5 15.4
73 12.0 3.5
18.5
75 11.0 3.5 18.5
81 12.0 2.5 22.1
81 12.5 4.5 25.7
80 11.0 4.5 25.7
81 12.0 4.0 28.3
83 12.5 4.5 30.8
STARTING THE APPLIANCE
2
SC
Boiler lockout indicator on:
SC
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 (D).
3 Start and run for 3 minutes then switch off.
4 Start and run for 20 minutes.
L
Note: smoke readings may be inaccurate until
the smoke from burning organic binder in the
access door insulation has ceased.
AIR BURNER
OUTPUT
DAMPER
HEAD
(APPLIANCE)
DISC
kW
SETTING
12.0 12 LD 2X SH 12/18
If the flue gas temperature is too high and the
15.0 15-18 LD 2X SH 12/18
baffles are correctly fitted, then reduce the oil
18.0 15-18 LD 2X SH 12/18
pump pressure (B) 5-10p.s.i. to compensate
for nozzle variations.
18.0 18 T2 SH 18/25
21.5 21.5-25 T2 SH 18/25
25.0 21.5-25 T2 SH 18/25
25.0 N/A T2 L/H 25/32
5 Switch on the oil supply.
27.5 N/A T2 L/H 25/32
30.0 N/A T2 L/H 25/32
Remove plastic cover from the burner casing.
Fit a suitable pressure gauge to port (A) on
the oil pump.
Adjust the air shutter (L) and pump pressure
(B) as shown in the table opposite. The
burner should ignite following a pre-ignition
period of approx. 15 seconds.
If changing the burner output, check the
position of the air damper disc is correct to
the output as shown in the table below.
NOTE: For 25/32 appliance see following
page.
Wait 2 minutes then press the lockout
reset button (D) to initiate another start
sequence.
Repeat procedure until a flame is established.
Check for after-spurting from the nozzle,
indicated by oil saturation on the combustion
head (G).
If after-spurting occurs:
Release the burner retainer (F).
Remove the burner, combustion head (G).
and electrodes, hold the burner vertical
to unscrew the nozzle and fill the nozzle
holder with kerosene.
Refit nozzle, electrodes, combustion
head (G) and the burner.
Restart and run for 3 minute intervals until
after-spurting stops.
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.
Check the CO levels and adjust the air
2
shutter (L) setting according to the table
opposite.
Check the flue gas temperature is close to
the values shown in the table.
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.
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 (L) to obtain
the correct CO level.
2
STARTING THE APPLIANCE
32