Bosch DANESMOOR UTILITY 32-50 Instruction Manual download pdf (Page 35)

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NOMINAL BOILER RATING AT NORMAL OPERATING TEMPERATURE

USING 28sec KEROSENE:

NOZZLE

OIL

PUMP

PRESSURE

(p.s.i.)

FUEL

FLOW RATE

Kg/h l/h

COMBUSTION

HEAD

SETTING

APPROX.

AIR

SETTING

APPLIANCE

INPUT OUTPUT

kW Btu/hr kW Btu/hr

Bentone Sterling 146 Burner (50/70kW):

1.25 45° S

1.50 45° S

2.00 45° S

145/150

110/135

4.33

5.2

6.05

5.48

6.58

7.66

12.0

6.0

9.0

13.0

52.1

62.5

72.9

Bentone Sterling 133 Burner (32/50kW):

0.85 60°ES

1 .10 45 ° S

1.35 45° S

150/-

120/-

155/-

2.78

3.55

4.33

3.52

4.49

5.48

11.5

12 . 0

12 . 5

2.0

4.0

8.0

114000

146000

178000

213000

249000

110000

140000

170000

33.4

42.7

52.1

N/A

APPROX

FLUE

GAS

TEMP.

( °C )

N/A

170000

205000

240000

STARTING THE APPLIANCE

BENTONE STIRLING 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.

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 retainers (H).

Remove the burner, combustion head (G).

and electrodes, hold the burner vertical

to unscrew the nozzle (K) and fill the nozzle

holder ( J ) with kerosene.

Refit nozzle (K), electrodes, combustion

head (G) 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

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,

adjust the air shutter setting (F) to obtain

the correct CO

level.

Repeat the fine tuning procedure (5) if required.

Refit the sample point cap (L)(hand tighten

only, do not over tighten).

STARTING THE APPLIANCE

BENTONE STERLING BURNERS

INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR UTILITY 32/50 & 50/708 716

109 711B 07.2010

COMMISSIONING

8 716 109 711 b 07.10 14/7/10 09:59 Page 35

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Bosch DANESMOOR UTILITY 32-50 Instruction Manual Page 35

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