erensan°
“The Heating Engineer”
- 17 –
280111
The slider system bolts should be loosened to enable system
functioning.
The mechanical connections of the boiler should comply with
Installation Circuit Diagram.
Purchase of the boiler as a package including armature is
recommended. In case the steam boiler is purchased without
armature, the armature choice should comply with boiler
operating pressure and related standards and procedures; and
the installation should be done by qualified technical personnel.
The following control devices should exist on the boiler:
• At least 2 manometers (min. Ø100mm)
• 1 pressurestat (Number of burner stages + 1)
• Thermometer (for chimney gas and feed water
temperature)
• At least 2 level gauges
• Water level controller
• At least 2 safety valves
Alarm element that is recommended to exist in a boiler;
• Water level electrode and relay system.
In order to prevent battery corrosion, the boiler must be
grounded with,
a) 0.5m
2
, 2mm thick copper sheet,
b) 0.5m
2
, 3mm thick hot dip galvanized sheet,
c) Massive copper bar electrodes.
Automatic lockout and protection hardware
For their safe operation, boilers should be equipped with safety
lockout systems and alarm circuits depending on their type,
capacity and features. At least the following lockout elements
are recommended to exist in a boiler:
• A main flame prevention system that will continuously
monitor initial ignition flame and stop the ignition circuit
if the flame goes out.
• A photo-electric monitor that checks main burner flame
and shuts off fuel and puts the flame out if the flame
goes out or combustion is excessively smoky.
• An adjustable pressure safety switch (pressurestat) that
stops the burner when steam pressure is too high.
erensan
°
“The Heating Engineer”
- 18 –
280111
• A level control device that stops the burner when water
level is excessively low.
• In kerosene burning boilers, adjustable pressure switch
that stops fuel if fuel pump outlet pressure drops.
• In fuel oil burning boilers, an adjustable thermostat that
cuts fuel if fuel temperature drops.
• A pressure switch that shuts the burner in case boiler
combustion air pressure drops.
• If atomization is being applied during liquid fuel burning,
hardware to cut fuel if atomization (steam or pressurized
air) environment pressure drops.
• In gas burning boilers, an adjustable pressure switch
that cuts fuel if gas pressure drops.
• Gage glasses, discharge valves, control valves, pressure
and temperature gages, safety valves, measuring and
control devices, locking and protecting hardware, air
heaters, boiler feed pumps, blower should be inspected
and maintenance, control and adjustment operations
should be done.
• Electric panel, burner panel and fan, boiler feed pump
propellers should be cleaned with dry pressurized air.
They should be protected from dust and water.
Required protective elements, apart from these:
BURNER SELECTION AND INSTALLATION
To achieve efficient combustion, the burner to be attached to
the boiler should be selected in compliance with the combustion
chamber defined in the boiler technical specifications section.
During the installation of the burner, care should be shown to
match burner nozzle axis with combustion chamber axis.
To prevent entry of excess air into the combustion chamber
from outside, the burner installation should be performed
carefully to prevent leakage.
The fuel used for operating should comply with burner
manufacturer recommendations.
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