Operating and Maintenance Instructions
BK250
Fully Condensing Boiler
Contents
1 Overview – laws, regulations
and standards 2
2 Information 4
2.1 Identification (label) ���������������������������� 4 2.2 Warning symbols �������������������������������� 4 2.3 Important information ������������������������� 4 2.3.1 Updating service �����������������������������4 2.3.2 Actuality �������������������������������������������4 2.3.3 Kroll Fully Condensing Boiler ����������4 2.3.4 About these operating instructions ��4 2.4 Validity ������������������������������������������������ 5 2.5 Applicability ���������������������������������������� 5 2.6 Liability limitations ������������������������������ 5
3 Safety instructions 6 3.1 General information ���������������������������� 6 3.2 Safety guidelines �������������������������������� 6 3.2.1 Risk of frost damage �����������������������7 3.2.2 Corrosion, boiler damage ����������������7 3.3 Norms, regulations ����������������������������� 7 3.4 Operation and monitoring ������������������� 8 3.4.1 Maintenance (servicing) ������������������8 3.5 Safety installations ����������������������������� 8 3.5.1 Water-side safety installations���������8 3.5.2 Gas-side safety installations �����������8 3.5.3 Label and operating instructions �����8 3.5.4 Additional safety installations ����������8 3.6 Waste disposal and environmental
protection ������������������������������������������� 9
4 Function and description 10 4.1 Function and operating principle ������ 10 4.2 Boiler description and dimensions ��� 10
4.2.1 Trial run, production control, quali- ty assurance ���������������������������������10 4.2.2 Operating characteristics, adjust-
ment ���������������������������������������������10 4.2.3 Materials ����������������������������������������11 4.2.4 Safety installations ������������������������11 4.2.5 Flue gas system ����������������������������11 4.2.6 Combustion air ������������������������������11 4.2.7 Reservoir – service water heater �12 4.3 Unintended use �������������������������������� 12 4.4 Technical data ���������������������������������� 13
5 Delivery – transportation to
installation site 15 5.1 Safety instructions ���������������������������� 15
5.2 Unloading, use of hoist ��������������������� 15 5.3 Completeness of delivery ����������������� 15
6 Installation and connection 16 6.1 Fully Condensing Boiler ������������������� 16 6.2 Electrical connection ������������������������ 16 6.3 Condensate drainage ����������������������� 17 6.4 Handing over and servicing
instructions ��������������������������������������� 17 6.5 Adjustment of the turbulators ����������� 17
7 Cleaning 18
7.1 Cleaning the combustion chamber and boiler ����������������������������������������� 18 7.2 Cleaning the flue gas passes ����������� 18 7.3 Cleaning the flue gas collector box �� 19 7.4 Wet cleaning of the plastic heat
exchanger ���������������������������������������� 19 7.5 Neutralization unit and siphon ���������� 20 7.6 Re-establishing of operating condi-
tion ��������������������������������������������������� 22
8 Terminal assignment and le-
gend to Conform 6.0 23
9 Spare parts BK250 26
10 EC conformity certification 30
11 Guarantee 31
12 Notes 32
BK250 Overview – laws, regulations and standards 1 Overview – laws, regulations
and standards
General information:
Transportation, installation, mounting and electri- cal connections should be done by a competent person. He bears responsibility for a proper implementation of these works.
Before installation of the Fully Condensing Boiler, it is necessary to obtain permission of the local heating equipment inspection board or other competent authorities.
In order to prevent penetration of oxygen into the closed heating system, it is advisable to perform a system division between the floor heating and the heating system by means of a heat exchanger.
It is advisable to install a temperature sensor for the floor heating system, in order to protect pipes and floor covering from overheating.
Since corresponding regulations vary in different federal lands, we recommend, before boiler ins- tallation, to conduct consultations with competent authorities and the local heating equipment ins- pection board. Combustion air supply should be performed in such a way as to exclude suction of flue gases from heating systems working on liquid or solid fuels.
The combustion air supplied to the unit should be free from chemical substances such as fluorine, chlorine or sulphur. These substances are con- tained in sprays, solvents and cleaning agents.
They may cause, in specific cases, corrosion of some unit components particularly in chimneys.
Before the unit is put into operation, it is neces- sary to check with competent authorities whether condensate neutralization is required.
If any changes in the control system or its sepa- rate items are made, then the guarantee, in case of possible subsequent damages, shall be inva- lid. It is recommended to install a safety valve with “H” identification into the heating circuit.
The maximum pressure of the discharge pipe is 3 bars. If the discharge pipe of the safety valve flows into the sewerage network, it is necessary to integrate a drain trap.
92/42/EWG
Efficiency guidelines 2006/95/EG
Electrical equipment designed for use within cer- tain voltage limits
DIN EN 267:2011-02 Fan-assisted oil burner DIN EN 676:2003 + A2:2008
Automatic forced draught burners for gaseous fuels
DIN EN 677:1998-08
Gas-fired central heating boilers DIN EN 14 471:2005
Chimneys – system chimneys with plastic flue liners
DIN EN 15 034:2007-01 Chapters 4.3.1 and 4.4
Heating boilers – condensing heating boilers for fuel oil
DIN 18 160-1 Supplement 3 Chimneys
DIN EN 12 828:2003
Safety-related equipment of heating systems 2006/42/EG
Machine guidelines DIN EN 303-1:2003-12
Chapters 4.1.5.10 to 4.1.5.12
Condensing heating boilers with fan-assisted burner
DIN EN 303-2:2003/12 Chapters 3.2 to 3.5 and Appendices A and B DIN EN 303-3:2004-10 Chapters 5.4 to 5.5 DIN EN 304:2004/01
Condensing heating boilers – test code for hea- ting boilers with fan-assisted oil burners
1 BImSchV (22.03.2010) Regulation on small furnaces
Overview – laws, regulations and standards
ATV A 251
Removal of condensate from chimneys DIN EN 60 335-1:2010
DIN EN 60 335-2-102:2010
Safety of household and similar electrical appli- ances
2004/108/EG
Electromagnetic compatibility
Furthermore, for installation in Austria the following norms and regulations are valid:
• ÖVE – Rules and local rules
• Art. 15a B-VG
• FAnlG – Law on furnaces dated June 12, 2011
Switzerland:
• Swiss provisions (BAFU) and certificate of conformity for oil and gas (LRV Article 20)
• Environmental protection law
• Water protection act
• Water protection ordinance
• Recommendation for sewage drainage from condensing heating systems
• SVGW gas guidelines
• SVGW water guidelines
• Recommendation concerning the minimum chimney height (above roof)
• VKF fire protection regulations
• SWKI guidelines
• SEV and ESTI rules
BK250 Information 2 Information
2.1 Identification (label)
Product Id. Nr.
Heating output Flue gas temperature Max. operation temperature Max. operation overpressure Water content
Electrical connection Protection class Installation type Degree of efficiency Country of destination Unit category Boiler number
0085 Oil
Giersch (M)
Produkt ID-Nr.
CE-0032BQ2672
CE0035CM103 150 - 250 kW 47°C / 54°C 100°C 4 bar 480 l
230 V~/50 Hz/1410 W IP40B23/B33
99%DE, AT, BE, CH, CZ, FR, GB, PL, SE, SK, LU see identification plate gasburner see heat exchanger's crossbrace BK250 fully condensing boiler with fan
Gas
Weishaupt (WG) 150 - 250 kW Weishaupt (WL)
Produkt ID-Nr.
CE-0036 0362/05 Produkt ID-Nr.
CE-0085AU0064
Set on kW
Kroll GmbH Germany 71737 Kirchberg / Murr
Tel. +49 (0)7144/830-0 Fax +49(0)7144/830-100 Giersch (MG)
Produkt ID-Nr.
CE-0085BN0587
2.2 Warning symbols
In these operating instructions the following war- ning symbols are used:
Disregarding the instructions marked with this symbol may result in a danger for persons and property damage.
Attention
This symbol specifies information related to boiler operation as well as to corresponding organizational and technical issues.
Information
2.3 Important information
Care should be taken to ensure that, depen- ding on the fuel and boiler type, the approp- riate operating mode is selected (See Ope- rating instruction for Conform 6.0 and Initial commissioning manual). Failure to comply with this provision will result in expiration of the guarantee on the boiler body! Without the submitted commissioning report, the guarantee agreement with Kroll GmbH company shall not enter into force.
Information
In order to prevent penetration of oxygen into the closed heating system, it is recommended to perform system separation between the floor heating and the heating system, by means of a heat exchanger.
2.3.1 Updating service
These operating instructions are not subject to modifications!
The manufacturer reserves the right to make at any time modifications and improvements in terms of further technical development, to all technical data, information and images. Any claims for a free modification or improvement of already delivered Fully Condensing Boilers are excluded.
2.3.2 Actuality
All references to laws, regulations, guidelines, norms etc. mentioned in these operating instruc- tions, are correct as of the period of the instruc- tions’ drafting (may 2012).
2.3.3 Kroll Fully Condensing Boiler The copyright for these operating instructions remains with Kroll GmbH company.
2.3.4 About these operating instructions For reasons of clarity, these operating instruc- tions do not contain all detailed information with regard to possible constructional and equip- ment versions of the Fully Condensing Boiler in question. At the same time, it is not possible to foresee every imaginable case of installation, configuration, operation and/or maintenance. In the event you will require additional information or some specific problems will arise that are not addressed in detail in these operating instruc- tions, please refer for information to a competent heating installation company or directly to Kroll company.
Information
2.4 Validity
These operating instructions are valid only with respect to the Fully Condensing Boiler marked with the production number (See Label). When making requests and ordering spare parts, ple- ase always state these model (factory) numbers!
These operating instructions contain information about the Fully Condensing Boiler and its items of equipment, insofar as these belong to the scope of delivery. Statements about equipment not belonging to the scope of delivery are inten- ded purely for informational purposes. A legal claim for this equipment (options) is excluded.
Should materials of the third-party manufacturers be attached to these operating instructions (ope- rating instructions of third parties), so Kroll GmbH company cannot assume any liability for their correctness, validity, technical data etc.
2.5 Applicability
All information provided herein with respect to the work safety and environmental protection corresponds with EU/EC regulations and/or with the Equipment Safety Act (GSG) of the Federal Republic of Germany! The customer/operator should, under his or her own responsibility
• Consider the laws, regulations, rules, gui- delines, technical instructions etc. specified above, as a basis for safe handling and maintenance,
• Measure their compliance with the local regulations, and
• independently install and adjust additional accessories prescribed by the local com- petent authorities and carry out appropriate works and measures using the resources of a specialist company.
2.6 Liability limitations
Kroll GmbH company takes no responsibility for damages to the delivered Fully Condensing Boi- ler caused by the following reasons:
• Ignorance of or failure to comply with these operating instructions.
• Insufficiently qualified maintenance staff or inadequately instructed service personnel.
• Natural wear and tear! For details see DIN 31 051 Part 4, EN 13 306 „Maintenance terms“.
• Faulty or negligent handling of the Fully Condensing Boiler and, in particular, omis- sion of taking measures as to safe and proper
◦ Installation and commissioning, ◦ Operation and monitoring, and ◦ Maintenance (servicing).
• Defective installation works and/or defective electrical installation.
• Chemical, electrochemical or electrical influ- ences.
• For substantial third-party products, the liability of Kroll GmbH company is limited to the assignment of liability claims to which Kroll GmbH company is entitled against the supplier of the third-party products.
Prior to each commissioning and maintenance cycle, the furnace should be checked for gas side malfunctions and leakproofness.
Attention
BK250 Safety instructions
The operating instructions should be positioned visibly adjacent to the Fully Condensing Boiler.
The connection and adjustment of the heating system should be performed by a qualified plum- ber. The heating technician should familiarize the operator(s) of the Fully Condensing Boiler with its functions and servicing! In the event of any faults or disturbances in the operation of the Fully Condensing Boiler, please notify the heating ins- tallation company!
If you smell gas, there is a risk of explosion
• Avoid open fire and spark formation (for example when turning on and out lights and electrical appliances)
• Close the shut-off gas valve and notify the heating installation company
If you smell exhaust fumes, there is a risk of poisoning
• Switch off the unit
• Open doors and windows
• Notify the heating installation company If there is a risk of fire
• Immediately put of the heating emergency switch (in case it is outside the installation room)
• Close the shut-off gas valve
• In the event of a fire, use the suitable fire extinguisher (fire class B pursuant to DIN 14 406)
The minimum distances to flammable materials must be chosen according to the local fire protec- tion regulations. Otherwise, there is danger of a fire.
3 Safety instructions
3.1 General information
These operating instructions are valid exclusively for the Kroll Fully Condensing Boiler. The staff in charge of installation, commissioning or main- tenance should read the operating instructions prior to starting these works. The requirements contained in these operating instructions must be adhered to. In the event of a non-compliance with the operating instructions, the guarantee claim vis-à-vis Kroll GmbH company shall expire.
3.2 Safety guidelines
For a proper and reliable operation of the Fully Condensing Boiler, it is necessary to observe the following safety guidelines.
Attention
• Installation, commissioning and mainte- nance of the Fully Condensing Boiler should be performed only by qualified and trained personnel.
• Works with electrical components (for example, adjustment) are to be performed only by qualified electricians.
• During installation of electrical equipment, the provisions of VDE (German Association for Electrical, Electronic & Information Tech- nologies) and of the local electricity supply company are relevant.
• The Fully Condensing Boiler may be ope- rated only within the power range indicated in the technical documentation of Kroll com- pany and of the burner manufacturer.
• The intended use of the Fully Condensing Boiler comprises its exclusive use for hot water heating systems pursuant to DIN EN 304 and DIN EN 303-3.
• It is strictly prohibited to bypass or in any way remove or switch off control, safety and monitoring equipment.
• The Fully Condensing Boiler may be opera- ted only when its systems are in technically perfect condition.
• Malfunctions and defects which affect safety (or may affect it) should be fixed in a prompt and expert manner.
• Defective parts and components must be replaced only with original spare parts of Kroll company.
Safety instructions
dust) as well as from halogenated hydrocarbons (contained, for example, in spray cans, solvents, washing and cleaning agents, paints or glues).
Otherwise pitting corrosion of the boiler body is possible. If the combustion air is being sucked in from inoperative fireplace or shaft, it is necessary to remove residuals of former oil or solid fuel combustion, under assistance of a specialized installing company.
If, after a cleaning, repeated dust exposure shall still be possible, (for example, due to spongy chimney joints), take the appropriate measures (for example, clean the chimney).
Modification of the gas heating system The operator may under no circumstances make changes in the heater, pipes for gas, electricity, water, air supply and flue gas.
These works may be performed only by a hea- ting technician, to eliminate the above mentioned hazards.
3.3 Norms, regulations
• The boiler must be serviced in regular inter- vals. We recommend to conclude, for this purpose, a maintenance contract.
• The Fully Condensing Boilers may be ins- talled and operated only in the boiler and installation rooms as required by local regu- lations and guidelines (FeuAO) with respect to furnaces.
• For Austria are also relevant the provisions of the Austrian Gas and Water Industry Association ÖVGW TR Gas (G1), Building regulations law B-VG, Art. 15A and also the Law on furnaces FAnlG.
• Swiss regulations (BAFU) and the Declara- tion of Conformity for oil and gas (LRV Art.
20) Burners
Fully automated fan-assisted oil burners pursu- ant to DIN EN 267. Fully automated fan-assisted gas burners pursuant to DIN EN 676. During the commissioning of the burner, the appropriate operating instructions of the burner are essential.
As to the commissioning of the burner, see corre- sponding operating and assembly instructions.
FuelEL heating oil pursuant to DIN 51 603.
Natural gas in accordance with the Code of Practice of the German Technical Association for Gas and Water (DVGW) G260/I and also pursu- ant to local norms.
Fig. 1: A lateral distance of minimum 500 mm should be maintained either on the left or on the right side of the boiler.
Condensate box (installed cross- ways)safety group
A connecting line should be lead to the chimney as short as possible and ascending. This is the only way to ensure the optimum performance.
The pipes should be carefully sealed! If the flue pipes are not properly sealed, the flue gas may escape and cause the risk of suffocation.
It is advisable to use the flue pipe bends with cleaning openings, to be able to clean the flue pipes.
3.2.1 Risk of frost damage
The Fully Condensing Boiler and storage water heater are frost protected through the controlling system. Since the risk (for example, during a long-lasting electrical power outage) of frost damage cannot be excluded, the Fully Conden- sing Boilers and storage water heaters should be only installed in the frost-protected rooms. If, during long shutdown periods and with inopera- tive heating system, the risk of frost danger shall remain, a heating technician should empty the Fully Condensing Boiler, reservoir and heating system, in order to prevent water-pipe ruptures caused by frost.
3.2.2 Corrosion, boiler damage
The combustion air must be free from dust (for example, deposited solid fuels or construction
BK250 Safety instructions
In the event of a defective fuse, they must be replaced only with the original fuses with prescri- bed amperage.
3.5 Safety installations
The commissioning of the Fully Condensing Boiler without a properly functioning safety installation (or with an improperly functioning safety installation), is not permitted.
Attention
3.5.1 Water-side safety installations Safety installations pursuant to DIN 12 828 such as the safety valve, safety temperature limiter and temperature controller are described in detail.
3.5.2 Gas-side safety installations
To these safety installations belongs the flue gas safety temperature limiter (STL).
3.5.3 Label and operating instructions The label must not be removed from the Kroll Fully Condensing Boiler; it should be kept in a well readable condition. (The operating instruc- tions must be placed visibly in the same room where the boiler is located).
3.5.4 Additional safety installations These safety installations include, among other equipment.
• Furnace emergency switch
• Heating oil locking device in the furnace
• Impermeable covers / grills in conformity with DIN EN 294 on the flue gas system (upon arrangement as an outdoor chimney) and on the air supply connection should be installed by a technician, under his own responsibility, in compliance with local regu- lations and guidelines (FeuAO).
The Kroll Fully Condensing Boiler serves exclu- sively for heat generation and also for water heating pursuant to DIN 12 828. The flow tem- perature is maximum 80 °C, the technical data of various boiler types are indicated on the cor- responding labels. Only those liquid or gaseous fuels that are indicated in the Kroll order confir- mation may be used as working materials.
The definition is made in compliance with 1.
BImSchV (1st Federal German ruling on emissi- ons control) condensing boilers: these are heat generators which utilize by condensation, as a result of their design, the heat of vaporization of water vapour contained in flue gases. This
3.4 Operation and monitoring
Put into operation the Fully Condensing Boiler only after all works related to installation and connection are completed and/or after comple- tion of possible preventive maintenance measu- res. During the initial commissioning it is neces- sary to monitor the automatic process of control functions and to check the tightness of the Fully Condensing Boiler and its connections.
In the event of unusual operating performance in the functioning of the Fully Condensing Boiler, for example, malfunctions or faults in energy supply, the unit must be immediately shut off.
Attention
Determine the cause of the problem or fault and fix it in a safe and secure manner. Start re- commissioning only after complete elimination of faults,
3.4.1 Maintenance (servicing)
It is strongly recommended to consider, during each inspection and/or scheduled maintenance works, suggestions with respect to causes of faults due to superfluous measures and, in parti- cular, to boiler opening, mostly unnecessary.
All connections at the Fully Condensing Boi- ler, burner, control panel etc. are pluggable or screwable.
When replacing safety installations make sure that the new components correspond to the original parts and are tested in conformity with DIN EN 14 597 or DIN 12 828.
Use only genuine components and parts deli- vered by Kroll GmbH company!
During any operations, refrain from using exces- sive force – if it goes beyond what is necessary to connect or disconnect bolted connections – there is a risk of material damage!
It is not allowed to moisten the plastic com- ponents (secondary heat exchanger, flue gas system, hoses, seals etc.) with oils, solvents, cleaning agents or other chemical substances.
All works on the electrical equipment should be performed only after having disconnected it from the power supply and only by a skilled electri- cian.
Before commencement of any works on the electrical equipment, make sure that the voltage is completely switched off. Damaged, burned, frayed cables as well as loose and untight cable connections must be immediately replaced by a skilled electrician.
Safety instructions
definition differentiates the heat generation with utilization of the heat of vaporization of water vapour in flue gases from the heat generators without such utilization.
3.6 Waste disposal and environmen- tal protection
The following substances which may originate during maintenance and repair works should be disposed of – under personal responsibility of the heating technician:
• Sediments, for example, after a breakdown
• Heating oil rests
• Cleaning agents and consumables
• Solid waste (replaced components) of all types
All disposal works should be conducted as prescribed, also pursuant to 1. BImSchV and German Waste Management Law (AbfG) and in compliance with the provisions of the Water Resources Act (WHG) as well as with local and regional regulations.
Liquid waste such as potential toxic substances capable of endangering ground water (WHG) should be collected in special closed containers and allocated for the proper disposal.
Do not allow working materials (heating oil) to infiltrate into the ground or sewerage system.
Potential oil leakages should be immediately bound in conformity with the Accident prevention regulations (UVV 1.) or wiped out.
During disposal (dismantling/scrapping) of the boiler, its components should be divided in accordance with their materials.
After complete cleaning and emptying of the neu- tralization box and during subsequent dismant- ling, the following materials may be recovered:
• Metals, steel, malleable iron
• Insulation materials, mineral wool
• Plastics: polypropylene, PVC, cable insula- tion
• electrical/electronic components
The components should be collected separately, in accordance with the materials; the non-recyc- lable residues should be disposed of pursuant to the German Waste Management Law (AbfG).
During disposal works, use safety gloves.
BK250 Function and description
exceed the normal values for the operation of electrical/electronic measuring and control devices.
Maximum ambient temperature: 40 °C Minimum ambient temperature: 1 °C The inducted combustion air should be dust-free and of normal quality (temperature, humidity etc.).
The Kroll Fully Condensing Boiler is operative and reliable provided that it is used properly, the agreed operational data are adhered to and only prescribed fuels are used.
It is necessary to take into consideration possible malfunctions, if:
• installation, adjustment and subsequent trial operation were not carried out properly.
• it is impossible to maintain the over-pres- sure in the furnace (resistance in the flue gas system or during the flue gas suction).
• the heat exchanger was not filled with water on the gas side prior to commissioning or after a long operational standstill.
• the fuel does not correspond to the usual specifications.
• the safety installations, notwithstanding the prohibition on alterations, were misplaced or bridged.
• the electrical connection data and net- work conditions do not correspond to the manufacturer’s data.
• the furnace was put into operation immedi- ately after or during filling of the heating oil storage tanks.
4.2 Boiler description and dimensi- ons
4.2.1 Trial run, production control, qua- lity assurance
The installation of the Fully Condensing Boiler must be performed by a qualified staff (a heating technician and an electrician). Without the com- missioning report, the guarantee agreement with Kroll GmbH company shall not come into effect.
Then introduction to the unit, trial run and hando- ver to the operator take place.
4.2.2 Operating characteristics, adjust- The Kroll Fully Condensing Boiler is fitted with ment the fully automatic electronic control system which
4 Function and description
4.1 Function and operating principle
In the furnace of the Kroll Fully Condensing Boiler, the combustion heat from oil or gas is transferred to the combustion chamber washed round by the boiler water and to the primary heat exchanger which is connected to the combustion chamber from the water side. The hot flue gases arrive then, under temperatures below 85 °C – that is, above the dew point – into the secondary heat exchanger and they are cooled down, in accordance with the external air temperature, to about 35 °C – 53 °C. The dew point of the flue gas is thereby not reached and both sensible and latent (hidden) heat is delivered, through steam condensation, to the secondary heat exchanger or to the combustion air passing through it in counterflow.
The flue gas arrives, after flowing through the secondary heat exchanger (counterflow) with very low temperature to the flue gas pipe. The combustion air arrives in the secondary heat exchanger, taken from the room via the air intake pipes. The secondary heat exchanger, working with the counter flow principle pre-heats the pas- sing combustion air. This pre-heated combustion air comes off the secondary heat exchanger at the front side of the boiler and is lead to the corresponding fan burner intake opening via an aluminium flexible pipe (air intake hose). This contributes to a high efficiency degree.
The condensate accumulated in the secondary heat exchanger contains the most pollutants from the combustion flue gases. It accumulates in the secondary heat exchanger and is then fed through a pipe connection to the neutraliza- tion box. The condensate passes through the mineral granulate and is then, in the neutralized condition, discharged into a wastewater pipe or sewage system.
Owing to temperature monitoring with the safety temperature limiter (STL) and the implementation of standards, the function of the Kroll Fully Con- densing Boiler is self-retaining over the whole combustion gas path.
The works which are not described in these operating instructions are reserved to the staff of the manufacturer.
Information
Functional criteria
The ambient conditions in the installation room of the Kroll Fully Condensing Boiler must not
Function and description
◦ Connecting pieces of seamless tubes in accordance with DIN 1629
• The secondary heat exchanger PP/PP
• Thermal insulation/outer cover ◦ 3-sided mineral wool 80 mm
◦ Front – mineral wool 40 mm with coating integrated into the front door
◦ Boiler casing – steel plate 1,25 mm, scre- wed together and powder-coated.
4.2.4 Safety installations
The Kroll Fully Condensing Boiler is fitted pur- suant to DIN EN 304 and DIN EN 303 with the following safety installations.
• Safety temperature limiter (STL) boiler 100 °C. This STL monitors the boiler tempe- rature.
• Safety temperature limiter, heat exchanger 90 °C protects from excessive flue gas tem- perature transfer. When a pre-set tempera- ture threshold is reached, the temperature limiters shut down the heat generator and lock it. Re-starting is only possible with the help of a tool.
• The safety temperature limiters are tested and marked in accordance with DIN EN 14 597�
4.2.5 Flue gas system
The flue gas system is used to remove residual low-pollution flue gases with the temperature of <60 °C (monitored by a temperature sensor) outside the building, over the roof. It is marked with its own label containing information about the manufacturer and the approval number. The flue gas system should be installed by efforts of a locally approved heating installer company, with the use of pipes and fittings made of plastic certi- fied for application in construction and connected to the flue gas connecting piece of the Fully Con- densing Boiler.
The combustion gas path of the boiler corres- ponds to the basic standards.
4.2.6 Combustion air
The combustion air arrives in the secondary heat exchanger, taken from the room via the air intake pipes. The secondary heat exchanger, working with the counter flow principle pre-heats the pas- sing combustion air. This pre-heated combustion air comes off the secondary heat exchanger at the front side of the boiler and is lead to the
• controls the operating performance in con- formity with the heat demand of the heating installation, and
• as safety circuit, can shut down the in the event of any malfunctions on the water or gas side.
• The pressure transmitter serves for the fun regulation and control.
The Kroll Conform 6.0 control system is integra- ted in the Fully Condensing Boiler.
When studying the information in these operating instructions, please always compare the indica- ted type designation with the data on the control panel of the delivered boiler.
The system has integrated functions for:
Boiler temperature
The boiler temperature is maintained by way of switching the burner on/off – at some 55 °C to 80 °C, but always >55 °C (see also the operating instructions of the control system).
Heating circuit temperature
The temperature at the heating circuit flow is regulated through control system to the preselec- ted value. It is possible, by virtue of the operating software, at any time to lower or to predetermine the heating circuit temperature (operating mode selection).
Service water temperature
The water temperature in the separate reservoir for service water heating (reservoir option) is maintained by way of switching on/off the respec- tive service water pump at the level preset in the control system. This process is interrupted if the return boiler temperature falls below 50 °C (boiler protection).
Flue gas temperature
The flue gas temperature is monitored by the STL 90 °C located in the secondary heat exchanger.
Ambient temperature regulation
The ambient temperature and the temperature of the heating circuit flow are recorded by sen- sors and it is compared, by means of the control system, with the predetermined heating circuit temperature and the setback temperature; if necessary, it is being corrected.
4.2.3 Materials
The components of the Kroll Fully Condensing Boiler correspond to the material requirements and the test protocol.
• The primary heat exchanger ◦ Steel S235JR
BK250 Function and description
• with values different from those indicated on the label.
• with fuels other than indicated in the order confirmation (OC).
• without negative pressure at the combustion gas path required for operating purposes.
The risk for the persons, the Fully Condensing Boiler and other equipment carries the heating technician or the operator of the heating system.
corresponding fan burner intake opening via an aluminium flexible pipe (air intake hose).
4.2.7 Reservoir – service water heater The connection of the service water heater is made at the inlet and the outlet of the Kroll Fully Condensing Boiler. A heating technician should install a service water circulation pump. The respective electrical sockets are available at the boiler control panel (see circuit diagram in the description of the Kroll Conform 6.0 system). A sensor for measuring the service water tempera- ture is attached to the control system.
4.3 Unintended use
The Kroll Fully Condensing Boiler may not be used:
• for the functions other than indicated in Chapter 3.5.4.
• in other system configuration.
With flue gas fan
Boiler type BK250
Fuel Heating oil Gas
Flue gas pipe DN 160 160
Duct system
Pipe length (vertical) m 40 40
Exterior wall system
Pipe length (vertical) m 40 40
Assessment basis
Connecting pipe BK250: 0,5 m overall length, 2 pipe bends 30°, 1 pipe bend 87°
Geodetic installation height: from 1000 m generally only with flue gas fan Assessment basis according to fan
Connecting pipe BK250 2 m overall length, 3 pipe bends 87°
With every further installed pipe bend, the length of the flue gas will be reduced by 1 m.
Observe the minimum section for combustion air FeuAO
This table is based on practical endurance tests conducted by Kroll GmbH company and partly on calculations performed by Centrotec Systemtechnik GmbH company.
Flue gas pipe dimensions BK250
non-room sealed heating NRSH
Function and description
with regard to installation, commissioning and maintenance.
The third party operating manuals and/or cir- cuit diagrams of the boiler equipment, control systems, supplementary documentation, expert assessments etc. should be taken into consi- deration. If needed, these documents may be requested directly from Kroll GmbH company.
4.4 Technical data
The operating data for the delivered Fully Con- densing Boiler may be found on the label or in the order confirmation.
The present operating instructions are attached to the delivered Fully Condensing Boiler inclu- ding technical data, dimensions and instructions
Boiler type BK250
Fuel Heating oil Natural gas
Nominal heat output kW 150 – 250 150 – 250
Firing capacity kW 152 – 253 152 – 253
CO2 content* Vol.-% 12,9 9,5
Flue gas mass flow g/s 112 105
Flue gas temperature °C <48 <56
Rest delivery pressure with fan Pa 350
Flue gas connection Ø mm 160
Water content l 480
Weight kg 1423
Heating water resistance (with ΔT=20 K) mbar 14,8
*CO2 content measured in furnace
BK250 Function and description
Fig. 2: BK250 frontal view
861 70240
DN125
243 375
Fig. 3: BK250 lateral view
3335
414 18363076 855
25
Fig. 4: BK250 rear view 11701050 120
4x DN80
502 448
Ø 160
DN70 DN20 1998 1878
561 154 2001
Fig. 5: BK250 top view DN50
859
430 364
1661
Fig. 6: BK250 frontal view without casing 780*1150
1316
779815
Fig. 7: BK250 lateral view without casing 1823
130 1370
16621752
199867035
1948*
1770*
20
* Dimensions for installation
Delivery – transportation to installation site 5 Delivery – transportation to
installation site
5.1 Safety instructions
During loading or unloading, any transportation to installation site and also during temporary sto- rage or warehousing, it is necessary to comply with regulations, warnings and instructions rela- ted to safety guidelines of the respective country.
5.2 Unloading, use of hoist
The Kroll Fully Condensing Boiler is brought to shipping completely or partially assembled.
• Danger of injury! Manual unloading or trans- portation of weights >35 kg (ILO, Geneva) or one-time lifting of maximum >55 kg (Acci- dent prevention regulations/Federal Ministry of Labour and Social Affaires of Germany) is forbidden.
• For your own security, always use suitable hoisting devices and/or industrial trucks as well as other load handling accessories with adequate load capacity. Before loading or unloading the Fully Condensing Boiler, take care to ensure sufficient space for secure placing of the boiler.
• The load handling accessories must be carefully attached and secured. There should be no danger from suspended loads!
• Fixing ropes or strings to the boiler equip- ment is forbidden!
• Always lift the Fully Condensing Boiler only vertically – never pull it sidewards!
Never stay or work under the suspended load.
Mortal danger!
Attention
The Kroll Fully Condensing Boiler should be handled, during unloading, transportation to installation site or temporary storage, with the usual care and protected against external rough treatment and/or falling objects.
5.3 Completeness of delivery
Check the completeness of delivery immediately upon its receipt (compare it with the order confir- mation / delivery note of Kroll GmbH company).
Missing parts should be promptly claimed to the delivering transport company and Kroll GmbH company notified.
BK250 Installation and connection
6.2 Electrical connection
The reliable mains connection is to be performed by an experienced electrician.
1� The characteristics of electrical mains should meet the respective local and nati- onal legal provisions.
2� As power cables, choose at least one fle- xible cable with polychloroprene coating, in accordance with 60245 IEC 45 (for example, NYM 3x1,5 m2).
3� The earth wire should be longer than other cables.
Information 6 Installation and connection
6.1 Fully Condensing Boiler
The installation of the Fully Condensing Boiler should be carried out under consideration of the actual installation guidelines. In this case, it is necessary to install safety-related equipment in conformity with DIN 12 828, for example, a safety group maximum 3 bar.
For operation with gas fan burners, the following classes of gas equipment are utilized (pursuant to DIN EN 437):
The distances from the unit to the walls or com- bustible materials (min. 200 mm) should meet local fire police regulations. The lateral distances on the left or the right side of the boiler should be minimum 600 mm, to ensure that the boiler door with the burner could be easily swung out.
The flue gas pipe must be lead to the chimney as short as possible and rising. The flue gas pipes must be carefully sealed up! It is recommended to use the flue gas pipes with an inspection ope- ning, to enable cleaning and visual inspection of the flue gas pipes.
The Fully Condensing Boiler and the tank water heater have to stand horizontally or slightly rising to the back in order to ensure a complete de- aeriation (use the adjustable feet to level them).
Country Classes of gas equip- ment
Gas connec- tion pressure
Germany I2ELL 20/25 mbar
Austria I2H 20 mbar
Belgium I2E+ 20/25 mbar
Luxembourg I2E 20 mbar
France I2E+ 20/25 mbar
Switzerland I2H 20 mbar
Installation and connection
The operator is obligated to eliminate mal- functions in the heating unit and/or its safety- related or electrical equipment only by qualified experts. Moreover, he must be clearly informed about the inadmissibility and potential danger of improper handling of the unit.
Information
The heating technician and/or the operator must not make during installation, commissio- ning or operation any changes in the Kroll Fully Condensing Boiler, its safety-related equip- ment or factory settings.
Attention
6.5 Adjustment of the turbulators
Before closing the boiler door, you have to make sure that the two upper turbulators are looking downwards (see picture). Otherwise, the door insulation can be damaged.
Fig. 9: Schematical view of the flue gas passes with cor- rect adjustment of the upper turbulators.
6.3 Condensate drainage
The condensate accumulated in the secondary heat exchanger is processed in the neutraliza- tion box of the Kroll Fully Condensing Boiler.
When discharging the condensate into sewage or wastewater sewer, it is necessary to take into account the waterway prescriptions of the res- pective country and the statutes of local waste disposal companies! The unit operator must obtain the authorization, bearing in mind the Advisory leaflet A-251 „Condensation disposal in chimneys” with presentation of the expert assessment. On installation of the supplied neu- tralization box, it is essential to annually loosen and rinse the granulate.
The supplied condensate trap DN70 should be placed as close to the boiler as possible. Prior to commissioning, fill the siphon with water.
If in specific situations the neutralization box is not utilized, the condensate drainage system should be arranged in such a way that the sealing water height is not less than 25 mm (see. Fig. 8).
Attention
Fig. 8: Condensate trap siphon
siphon-like hopper
25 mm
Boiler
6.4 Handing over and servicing instructions
It is essential that the installation, commissio- ning and maintenance of the Fully Condensing Boilers are carried out by qualified and trained personnel. During the installation and trial run, it is necessary to carefully check the conformity of safety installations with DIN 12 828 as well as its functioning and correct setting and to confirm it in the commissioning report.
The heating technician should familiarize the operator with the heating unit and its servicing and with safety installations and their functions!
The operator must place the operating instruc- tions for the Kroll Fully Condensing Boiler visibly in the same room where the boiler is located�
BK250 Cleaning
Step 3:
Clean the combustion chamber using the boiler brush. Sweep out or vacuum away the residues.
7.2 Cleaning the flue gas passes
Step 1:
Remove the turbulators.
Step 2:
Clean all flue gas passes using the big and the small brush. Sweep out or vacuum away the residues.
7 Cleaning
Maintenance and cleaning works may only be carried out by authorized skilled personnel.
Attention
At each service check-up, the Fully Condensing Boiler should be switched currentless (main switch of the Fully Condensing Boiler and main switch of the heating system).
It is recommended to place in the installation room, as a precautionary measure, a signboard:
“Attention! Boiler cleaning! Do not put on power supply”.
Please use during these works the personal safety gear to protect your eyes, breathing and hands.
7.1 Cleaning the combustion cham- ber and boiler
Step 1:
Remove the air intake hose at the lower part of the heat exchanger and take off the front panel.
Step 2:
Remove the fixing screws and open the boiler door together with the burner.
Cleaning
7.4 Wet cleaning of the plastic heat exchanger
Step 1:
Put a collecting pan for the cleaning water under the condensate pipe.
Step 2:
Wash the plastic heat exchanger with water through the opening in the collector box.
7.3 Cleaning the flue gas collector
Step 1:
box
Remove the condensate pipe between conden- sing boiler and neutralization box.
Step 2:
Take off the lower rear panel.
Step 3:
Open the flue gas collector box by unscrewing the cap. Vacuum away the combustion residues.
BK250 Cleaning
Cleaning
Fig. 11: Overall view of the neutralization box after dis- mounting
Step 1:
Wash the siphon bend, the pipe and the connec- tion piece with water.
Step 2:
Pour out the granulate into a suitable container.
7.5 Neutralization unit and siphon
When the granulate becomes contaminated or solidified, the neutralization effect drops (pollutants in the condensate are insufficiently reduced). In certain cases, corrosion damage on the wastewater pipe system cannot be excluded.
Information
The neutralization box should be regularly maintained (at least once in a year), particu- larly if the boiler is oil-fired. Wash out the filter material with clear water. During these works, wear protective gloves and safety goggles. The condensate residues may be etching. Observe the provisions of the attached Safety data sheet!
Attention
Fig. 10: neutralization box
1 2 3
Fill 6 kg granulate uniformly into the midd- le chamber
Install the condensate pump (accessory) here. Cut the cover with a knife along the foreseen line
Put in the activated carbon filter (acces- sory) here
1 2
3
A granulate addition will be required at the ear- liest after 1 – 2 years when some 50 % of the gra- nulate are used up. After approximately 4 years, complete replacement of the granulate will be required. It is absolutely essential to loosen and rinse the granulate annually.
Cleaning
Step 6:
Complement the used up granulate with new one�
Observe chapter 6.3 for re-installation!
Information
Step 3:
Clean the neutralization box with water.
Step 4:
Wash the granulate with water.
Step 5:
Refill the purified granulate into the middle part of the neutralization box.
BK250 Cleaning
7.6 Re-establishing of operating con- dition
• Connect the condensate discharge system with the neutralization box and then to the waste water system.
• Fill the neutralization box with the granulate as described above (water and granulate).
• Put in the turbulators and turn the two upper ones as shown in fig. 12 (see chapter 5.6).
Fig. 12: Positioning of the two upper turbulators in order to avoid damages in the boiler door insulation.
• Connect the air intake hose into the heat exchanger and plug in the burner plug.
Carry out cleaning works at least once a year.
While doing so, please keep in mind the appro- priate regulations and norms of the respective country, sewage water and waste ordinance as well as job safety rules and instructions.
Information
Prior to every commissioning and during each maintenance interval, please check the furn- ace for possible gas-side malfunctions and for leakproofness.
Attention
Terminal assignment and legend to Conform 6.0 8 Terminal assignment and
legend to Conform 6.0
0123456789
Änderung DatumName Gepr.Norm Datum
Urspr.Ers.dErs.fZust. Bearb.BUBlattvon 11 04.12.15Regelung 6.0
40 41 42
47 48 49 50 43 44 45 46
51 52 53 54 55 5657 58 59
0 - 10V eBUS eBUS
LN
N3
N4
N5 N6
14N
1615 N7
L1N
S3B4 T2 T1 N 12
N
N
N 89
1011
1213
MP1P2P3P4P5
+-
M1
+-
M2
+-
M3
T8T6
2224 21
0 - 10V
P6
063936 A1A21214 11
Attention!
BK250 Terminal assignment and legend to Conform 6.0
Terminal as-
signment Standard
assignment Designation
40 Nominal value output 0 – 10 V
41 eBus (control panel, service tool, sequence controller, remote control)
42 Control panel Yes eBus (control panel, service tool, sequence controller, remote control)
43 Yes Service water charge pump
44 Yes Ambient temperature sensor
45 Buffer temperature sensor, above
(required for cascade service, buffer mode operation and mixing cylinder)
46 Buffer temperature sensor, centric/lower
(Shutdown sensor for trickle charging)
47 Yes* Secondary pre-flow sensor (*only for BK50 – BK250)
(not required for cascade service, buffer mode operation and mixing cylinder)
48 Yes Flue gas temperature sensor
49 Yes Boiler temperature sensor
50 Yes Boiler return flow temperature sensor 51 Yes Flow temperature sensor, heating circuit 1 52 Flow temperature sensor, heating circuit 2
53 Collector sensor
54 Buffer temperature sensor, lower / Collector buffer sensor
55 Nominal value input 0 – 10 V
56/57 Yes 12 V DC output pressure sensor (red/yellow/black)
(not for BK20/BK30 without flue gas fan)
59 Auxiliary boiler sensor
Terminal assignment Standard
assignment Designation
L N Yes Mains connection
(blue)1
(1)
(brown)2
(3)
(black)N
(2) Yes Flue gas fan (not in the model BK20/BK30 without fan) (Direct connection)
(with 4-pole Wieland plug) M
3 N Yes Service water charge pump P1
4 N Yes Feeding pump
BK50 – BK250 electronic, constant speed P2
5 N Yes Circulation pump HC1 P3
6 N Yes Circulation pump for service water P4
7 N Circulation pump HC2 P5
(black)8 9
(brown) N
(grey) Yes Internal mixer (8open+/9close-)
(BK50 – BK250) M1
8 N Yes or in BK20/BK30 solar pump/switch valve
over solar power
10 11 N Yes HC1 mixer (10open+/11close-) M2
12 13 N HC2 mixer (12open+/13close-) M3
14 N Yes Additional relay (Boiler circulation pump)
(BK50 – BK250) P6
15 16 Yes STL boiler/flue gas
L1 N T1 T2 S3 B4 Yes Burner plug (1/2/gr/ye/3/4/5/6)
T8 T6 Burner plug stage 2 (T6/T8)
(gr/ye) (gr/ye)
Terminal assignment and legend to Conform 6.0
0123456789 Änderung Datum NameGepr. Norm
Datum Urspr.Ers.dErs.fZust.
Bearb.BU Blatt vonBl.
Blatt 4/0 10.04.13 Steuerung Abgasventilator 11
Line
Load SSR
34 12 Abgasventilator
<-- 0-10V
Conform 6.0 LX1 NPE40 M BK 250
Connection flue gas fan
BK250 Spare parts BK250
9 Spare parts BK250
Spare parts BK250
Order number BK250 1 Boiler without casing
1�1 Boiler body 045910
1�2 Group pump/mixer 049510
1�3 Mixer 049505
1�4 Mixing valve motor (servo drive) 049506
1�5 Boiler circulation pump 063653
1.5a Additionel relay 060115
1�6 Distance piece mixer to pump DN80 049507
1�7 Distance piece boiler flow to mixer DN80 049504
1�8 Distance piece boiler return to pump DN80/DN40-90° 049509 2 Casing parts
2�1 Side element right, front part 046489-01
2�2 Side element right, rear part 046490
2�3 Side element right, lower part 046491
2�4 Rear panel, left part 046488
2�5 Rear panel, right part 046487
2�6 Rear panel, lower part 050434
2�7 Side element left, front part 046492-01
2�8 Side element left, rear part 046493
2�9 Side element left, lower part 046494
2�10 Front cover, upper part 046484
2�11 Front cover, middle part 046483
2�12 Front cover, lower part (for heat exchanger) 046498
2�13 Cover at the front 046485
2�14 Cover at the back 046486
2�15 Set of cover plates for side element 046495
3 Components
3�1 Heat exchanger 046117
3�2 Flue gas collector box BK250 047902
3�3 Filling and discharging cock 3/4" 049502
3�4 Plasic radial fan 046316
3�5 PP-pipe DN 160 with measuring opening 051487
3�6 Fan pedestal 046354
3�7 Fan pedestal support bracket 050862
3�8 Burner See the attached burner
operating instructions
3�9 Burner hose (aluminium flexible hose, two-ply) 051105
3�10 Hose clamp NW125 051103
3�11 Connecting intake fitting (Giersch M / MG20) 046881
3�12 Neutralization box mounted without pump 046336
Neutralization box 046249
**: without picture
BK250 Spare parts BK250
Order number BK250
3�13 Filter cage 046309
3�16 Boiler support 035457
3�17 Socket for negative pressure measurement** 037222
4 Steuer-, Regelelemente und Signalgeber
4�1 Control 042475-02
4�2 Control unit 042476-01
4�3 Front panel 042433-03
4�9 Safety temperature limiter 100 °C 050509
4�10 Safety temperature limiter 90 °C 049292
4�11 Faceplate 037196-03
4�12 Mounting panel 042770-10
4�13 Hood for phase controlled modulator 049302
4�14 Fixing plate for phase controlled modulator 049301
4�15 Relais (SSR) 047701
4�16 Interference suppression filter 006919
4�17 Fuse holder (including microfuse T10A 5x20)** 042776
4�18 Power button green 0/1** 042777
4�21 Signal lamp red** 050768
4�22 Differential pressure transmitter with plug** 042517
4�23 Holding bracket** 042548
4�24 Plug 3/N (service water charge pump)** 042576
4�25 Plug 4/N (feeding pump)** 042577
4�26 Plug 5/N (HC1 circulation pump)** 042578
4�27 Plug 6/N (circulation pump)** 042579
4�28 Cover 049429
4�29 Recessed grip 036851
4�30 Cable blend 049430
4�31 Cable conduit 049500
4�32 Plug 8/9/N (internal mixer)** 042581
4�33 Plug 10/11/N (HC1 mixer)** 042582
4�34 Plug 40** 042553
4�35 Plug 43 (DHW temperature sensor)** 042623
4�36 Plug 44 (ambient temperature sensor)** 042555
4�37 Plug 48 (flue gas temperature sensor)** 042626
4�38 Plug 49 (boiler temperature sensor)** 042627
4�39 Plug 50 (boiler return sensor)** 042628
4�40 Plug 51 (HC1 sensor)** 042629
4�41 DHW temperature sensor** 042474
4�42 Flue gas temperature sensor** 042474
4�43 Boiler temperature sensor** 042474
4�44 Boiler return temperature sensor** 042474
**: without picture
Spare parts BK250
Order number BK250
4�45 HC1 sensor** 042473
4�46 Ambient temperature sensor** 042471
4�47 Burner cable** 042780
4�48 Burner cable stage 2** 046312
4�49 eBus connection line** 042784
4�50 Omega connection spring** 038749
5 Other connection elements
5�1 Rapid nipple** 004295
5�3 PP-pipe DN160x250 mm 046819
5�5 PP-elbow DN160x30° 046259
5�6 PP-elbow DN160x87° 033536
5�7 HT-elbow Ø = 70** 031372
5�8 HT- slip-on sleeve 70 mm** 048119
5�9 Sink connection tube** 048120
**: without picture
BK250 EC conformity certification 10 EC conformity certification
EG-Konformitätserklärung
Déclaration de conformité CE 0035
Guarantee
6� Exclusion of guarantee
No guarantee shall be granted, regardless of the contributory reasons, for damage in consequence of:
• Accident, wilful damage, unauthorized use, fie, storm, hail, lightning or explo- sion,
• Use of unsuitable fuels
• Acts of war of any kind,
• Confiscation or state intervention.
No guarantee is granted for consumables (oil jets, ignition and ionization electrodes).
7� Scope
The guarantee is only valid within Europe, in geographic sense.
8� Other provisions
The Warrantee is advised that the legal rights of the consumers are not affected by this guarantee.
11 Guarantee
Kroll Fully Condensing Boilers BK20 and BK30
1� We grant to dealers/ craftsmen and consu- mers a guarantee for durability of goods, in compliance with the following conditions, for the following parts:
• Boiler body 2 years
• Plastic heat exchanger PP 5 years
• Plastic parts 5 years
• Conform 6.0 control system 2 years
• Rotating electrical components 2 years
• Oil and gas fan burner 2 years 2� The guarantee begins with the date of put-
ting into operation but no later than 4 weeks after delivery to a dealer/ craftsman and ends after expiration of the period specified in cl.1. Without the submitted commissio- ning report, the guarantee agreement with Kroll GmbH company shall not enter into force. As the parts are replaced within the scope of guarantee, the guarantee ends after dismounting. For the newly installed parts, the period mentioned in cl.1, begins with the installation.
3� Scope of the guarantee
The guarantee includes the replacement of parts covered by the guarantee. Labour and transportation costs related to the installa- tion as well as costs of disposal bears the Warrantee, as far as legally permissible.
4� Guarantee handling
The Warrantee should inform the manu- facturer about any damage covered by the guarantee, immediately upon discovery, with an exact description of it. The defective part should be sent to the manufacturer along with the returns form.
5� Guarantee is granted
• If the commissioning was carried out by a trained specialist staff and the signed commissioning report was sent to the manufacturer immediately after commis- sioning.
• If maintenance was made according to the rules, in the mentioned timescale.
BK250 Notes
12 Notes
Notes and particularities
Any use, installation, maintenance that is not effected in accordance with the rules specified in the operating instructions, or unauthorized modifications to the factory-made equipment design shall result in expiration of every guarantee claim.
Otherwise our “Conditions of Sale and Delivery” shall apply.
Subject to technical change in terms of product improvement without notice.
