11
3
For Your Safety
3.5.2
Basic Device
Check the following items prior to commissioning:
•
Valves must be assigned correctly to valve outputs on BT300.
•
Correct setting of time parameters (especially safety and pre-purge times).
•
Flame sensor functioning well in case of:
•
flame blow-off during operation (incl. flame-out response time)
•
ambient light is present during pre-purge period
•
at a missing flame formation while end of safety period starts
•
Activation of the valve leakage control function of gas valves and correct leakage meas-
urement, when required by an application.
3.6
Tasks fulfilled by "authority on the subject" during Approval Test
By specifying the assigned DIN registration number and product ID number the manufacturer
confirms that model BT300 burner control system is consistent with type-tested system.
The connection between actuators and actuator elements for fuel and combustion air and also
to any additional actuator elements used must be form-fit.
3.6.1
Checking for Correct Parameter Setting in System
While installing and commissioning the plant the person in charge of the plant/heating techni-
cian needs to document the following:
•
Parameter set values
•
Setting values (e.g. curve progressions)
•
Values describing fuel/air ratio control.
This data can be printed using LSB Remote Software or alternatively being kept as a hand-
written note.
Retain this documentation and have it checked by the ’authority on the subject’.
NOTICE
For BT300 parameter settings which deviate from application standards can be carried out in
access level 2. For this reason, check whether the parameter settings are consistent with the
corresponding application standards (e.g. EN 676, EN 267, etc.) or the respective plant has
to be approved separately.
3.6.2
Checking the Fuel/Air Ratio Control System
Save setting values (curve parameters) for actuator elements, fuel and combustion air through
the complete range of burner firing rate in sufficient number.
Select setting values of fuel and combustion air considering combustion chamber pressure,
fuel pressure, temperature and pressure of the combustion air in order to guarantee proper
operation with adequate excess air through the entire range of burner firing rate.
The burner/boiler manufacturer has to document this by measuring reference values of the
combustion process.
Содержание BT300 BurnerTronic
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