erensan°
“The Heating Engineer”
- 23 –
280111
heaters, fuel oil leakage to steam side should be checked. To
understand this, the oil pump should be run and by using the
pump safety valve or the first valve after the heater outlet on
fuel oil pipe, the highest pressure in the system should be
applied for five minutes while the steam is closed on the heater
fuel oil side. After this, the steam inlet should be fully opened
and the condenser water should be checked for fuel oil
existence.
In liquid fuel burning boilers, the most important reason for bad
combustion is fuel not being fully atomized. To ensure full
atomization, the type of atomization that will be recommended
by the manufacturer should be applied.
The water collected at the bottom of the fuel tank should be
discharged.
Fuel circulation should be provided running the pump after
ensuring the fluidity of the fuel-oil in the pipes. All air in the
fuel-oil hardware should have been bled.
The fuel residues collected in the burner, boiler front and
especially at furnace bottom should be cleaned before firing.
When load needs to be reduced while the boiler is operating,
the burners in operation should be shut off one by one and the
required minimum fuel amount should never be dropped under,
thus the continuity of the flame should never be jeopardized.
Gas fuel hardware
Before firing, all jointed points such as valves, flanges in the
gas pipe should be checked for gas leaks; all burning hardware,
hardware such as burners, control valves should be controlled,
the leaks found should be urgently removed.
The burners should be fired after adjusting the gas and air
amount to first firing values. A burner to be fired should never
be ignited from the flame of another burner in operation.
In both the liquid and gas fuel burning hardware, the fuel valve
or valves, coming after the last manometer in front of the
burner or burner group, should always be kept fully open
erensan
°
“The Heating Engineer”
- 24 –
280111
during combustion. Otherwise, the real conditions in the burner
(such as the real value of the fuel feed pressure) cannot be
monitored.
The first firing flame to be used in the first firing hardware in
ESB type boilers should be great enough to overcome the
counter pressure of the boiler.
SAFETY RULES
• The boiler should only be used for steam production
purposes.
• The boiler should be used complying with warnings and
recommendations in this procedure.
• Steam installation should be commissioned to authorized
personnel.
• Electrical connections of the boiler should be
commissioned to authorized personnel.
• The boiler should not be operated if boiler water level is
below minimum.
• When opening the front door, the burner should be shut
off and burner power should be disconnected.
• It should be ensured that the personnel to operate the
boiler have boiler certification.
• The boiler chimney should be built in compliance with
chimney building rules. Airbrick and briquette should not
be used in boiler chimneys.
• 2 times a year, chimney cleaning should be procured. It
should be ensured that the chimney has no any cracks,
holes, the chimney cleaning door is closed and insulated
properly.
• During first operation and subsequent firings, it should
be checked that the boiler and condenser tank is filled
with water and that the suction and discharge valves of
the boiler feed pump, which is expected to run, are
open, the pump air has been bled and pump rotation
direction is correct.
• If abnormal noises are heard in the boiler or the
installation when the boiler is operated, the burner
should be immediately shut off and pressure should be
relieved by the discharge lines. Then, the fault should be
determined and removed.
To Next Page