Kostrzewa Mini Bio 10 Notice Technique page 71

5. Design... | 6. Boiler start-up, operation and stop including emergency stop
5.G Selecting the nominal heat output of a boiler
The nominal boiler heat output must correspond to the heat demand.
The heat demand for domestic hot water and central heating systems
is determined in accordance with the relevant standards and regula-
tions.
The process heat demand is calculated in accordance with the re-
levant requirements of the production processes for an individual
plant. The nominal heat output of the boiler must be selected by an
authorised person based on thorough calculations. Do not oversize
the boiler.
5.H System venting
Water heating system venting must conform to the relevant standards
and regulations.
6. Boiler start-up, operation and stop
including emergency stop
6.A Boiler inspection
Check the following before filling the boiler with water:
boiler internal checks - clean and check the internal insulation
(fire bricks)
check movable parts, especially pressurised
check valves, especially safety valve
check controls, gauges, regulators (e.g. boiler control system)
boiler external checks - external insulation, boiler casing etc.
check connected systems
Remove any defects and faults in the boiler operation. Perform a
water test after major repairs, pressurised part replacement and long
standstill.
Experts in heating
6.B Filling boiler and system
System and boiler feed water must meet the design requirement, see
section 5.D 'Water quality requirements'. The difference between the
feed water temperature and the boiler shell temperature (ambient
temperature) must be as low as possible – a threshold difference of
30°C is recommended. If this condition cannot be met, extend the
boiler filling time.
Filling procedure:
open feed valve
open return valve
open filling valve
check boiler and system condition and pressure device integrity
6.C Start-up preparation
Check the following before boiler start-up:
check if all the safety and fire regulations and guidelines in the
quick guide to the safety and fire regulations for fuel systems
and all components including ducts, valves, controls, pumps etc.
regarding gas tightness are followed
check system pressure–if the system pressure is too low, increase
the pressure (with a low flow rate to reduce the volume of air
introduced to the system)
check fuel level in the storage hopper (refill if necessary to allow
installation of the storage hopper cover)
check fuel level–check if the storage hopper is free from foreign
material (stones, steel parts etc.) which may affect fuel conveying,
burner operation or cause damage to the feeder components
check flue system–check if all fire regulations are followed
check wiring system
check auxiliary equipment (e.g. swirl vanes, if installed)
check boiler room ventilation system
check boiler condition (closed door side, cleanouts, pipe
stoppers, etc. and gas tightness)
6.D Boiler start-up
The boiler (system) must be started by an authorized installer (valid
authorized service technician, a certificate issued by Kostrzewa is
required - source: www.kostrzewa.com.pl 'Service' tab). Installation
and trial run must be recorded in the Warranty Card. The user must
notify the relevant authorities of a new boiler installation. The relevant
authorities will inform the user on any further procedures required
(e.g. scheduled inspections, cleaning).
Mini Bio and Mini Bio Luxury User Manual - ENGV 08.15
71