OPERATION MANUAL. CENTRAL HEATING WATER BOILER type KWH

Transcription

1 ZAKŁADY MASZYNOWE "HAMECH" HAJNÓWKA ul. Armii Krajowej 3 centr. tel. 0 (prefix) do 26 fax 0 (prefix) Serwis 0 (prefix) Keep for future use OPERATION MANUAL CENTRAL HEATING WATER BOILER type KWH Serial... Valid with the order.../... Date... Signature... Edition I/USA HAJNÓWKA 2006

2 1.0. INTRODUCTION GENERAL INFORMATION TECHNICAL DESCRIPTION APPLICATION TECHNICAL DESCRIPTION (FIG.1.) CLASSIFICATION TYPES OF FUEL Basic fuels Substitution fuel BOILER POWER FOR SUBSTITUTION FUEL TECHNICAL DATA TECHNICAL ACCEPTANCE EQUIPMENT AND TOOLS INDISPENSABLE FOR OPERATION EQUIPMENT FOR INSPECTION & MEASUREMENT INSTALLATION (ASSEMBLY) GENERAL ADDITIONAL INFORMATION OPERATION MANUAL START-UP OPERATION (WITHOT PRE-FURNACE) COUPLING WITH AZSD EMERGENCY STOP WATER SUPPLY INSPECTION AND MAINTENANCE MANUAL CLEANING MAINTENANCE REPAIR AND OVERHAUL INDUSTRIAL SAFETY DESCRIPTION AND EVALUATION OF RESIDUAL RISK Description of residual risk Evaluation of the residual risk LIST OF WARNING AND INFORMATION SIGNS FOR THE KWH BOILER TRANSPORT FAILURES FUEL STORAGE / MINIMUM FUEL STOCK COMPLAINT FORM WARRANTY CONDITIONS CONFORMITY DECLARATION

3 1.0. INTRODUCTION Water boilers type KWH together with woodwaste combustion units AZSD have been tested in the Research Laboratory for Boilers and Heating Systems of the Heating & Sanitary Technology Institute in Łódź. The tests have proved conformity with requirements contained in the Polish Standard PN-EN and in the Decree of the Ministry of Economy, Labor and Social Policy dated on concerning requirements for energetic eficiency General information The purpose of present manual is to acknowledge users and fitters with construction, working idea, assembly, proper operation and maintenance as well as transportation and storage of water boilers of KWH type. Before starting any operation we recommend to acknowledge with present manual and check if the boiler and its equipment are complete and not damaged during transport. Non-observance of instructions contained in present manual makes warranty void TECHNICAL DESCRIPTION 2.1. Application KWH boilers are designed for operation in central heating gravity systems or in open systems with forced circulation, and especially as heat exchangers for AZSD pre-furnaces. Very low level of emission of pollution to the atmosphere, high efficiency and stable working parameters makes the KWH+AZSD sets one of the best in their class. The highest temperature inside the boiler must not exceed 95 C. The boilers belong to the group of low-temperature water boilers and need not be registered in local Technical Supervisory Office. Protection of the open system should conform with the standard PN-91/B concerning protection of open water heating system Technical description (fig.1.) KWH is a low-temperature water boiler equipped with three-way (four-way) exhaust gas circulation, fired with hot exhaust gas transferred to the combustion chamber from a pre-furnace or with solid fuel. The structure is of bent / welded type. Inside of boiler there are heated water chambers (1) built in side walls and combustion tubes (2) forming two (three) exhaust gas drafts. Pre-furnace contains flat water grid (3) made of steel profiles. The grid is also included into boiler s water circulation. Angled position of the grid in relation to 3

4 boiler s level ensures water circulation inside its structure, prevents excessive furr deposit as well as allows gravitational water flow indispensable for proper grid s cooling. Below the grid there is an ash tray (4), above the grid there is a vertical stopping wall (5). The furnace chamber is accessible through the feeding door (6) and the grid door (7); access is also possible through side walls openings which are simultaneously inlets for AZSD system (8). Boiler s structure allows wide adjustment of combustion air quantity. For this purpose the boiler is fitted with ash door (9) together with an adjustable flap, which enables adjustment of air coming under the boiler s grid. The air can be also supplied through tilted grid door (7) installed in boiler s front wall. In the rear part of the boiler below the row of combustion tubes there is a deposit chamber (10) accessible through the door (11); access to combustion tubes from upper side is possible through cleaning flaps (12) for the first and (13) for the second row of combustion tubes. Exhaust gas outlet is realised through a flue (14). The boiler can work with natural air draft generated by a funnel or with forced draft generated by a fan Classification Present operation manual is valid for boilers type KWH of thermal power: 55; 110; 180; 300; 600; 1000; 2000 kw; 2.4. Types of fuel Basic fuels The basic fuel for the KWH boilers coupled with an AZSD unit is comminuted woodwaste of 30 mm granulation, 30 50% humidity and n.c.v MJ/kg burnt in the pre-furnace Substitution fuel Substitution fuels used in KWH boilers (when withot pre-furnace) are: big wood pieces coal/lignite briquetts coal/lignite mix coal + peat or coal + woodwaste mix pea coal + culm from 1/2:3 to 3: Boiler power for substitution fuel. If necessary, the KWH boilers can be fired with substitution fuel. Permanent use of wet fuel and simultaneousy low temperature of exhaust gas below 160 C leads to premature wear of the boiler. The reason is condensation of combustion products e.g. water, nitrogen oxides, sulphur oxides etc., which create very agressive environment and cause corrosion of steel boiler elements. 4

5 When using these fuels the thermal efficiency drops, approximately proportionally to the drop of n.c.v. (in relation to the basic fuel) and problems with boiler maintenance. Negligence in frequent cleaning of the boiler may lead to problems with removal of impurities from heated boiler s surfaces, decrease of flow in exhaust channels and drop of boiler s efficiency Technical data. TABLE 1. No. Item Unit Thermal power 1 Rated thermal power kw Adapted for co-operation with the unit AZSD-50 AZSD-100 AZSD Rated thermal power together with AZSD kw 60* 90** 190*** 4 Basic fuel for AZSD Comminuted wood of up to 30 mm granulation and 30-50% humidity 5 Thermal power adjustment range % Heated boiler surface m 2 5,5 11, Admissible static pressure MPa 0,3 8 Max. temp. of outlet water ºC 95 9 Required draft behind the boiler Pa >23 >26 >29 Average exhaust gas temp. at 10 the flue ºC 200 Basic fuel consumption at 11 nominal power of AZSD kg/h 24,1* 40,57** 55*** Thermal efficiency at nominal 12 power when coupled with AZSD % 77,7 78,7 78,7 13 Weight with insulation kg Funnel height m Funnel diameter mm Water volume l *- at n.c.v kj/kg ** - at n.c.v kj/kg *** - at n.c.v kj/kg - connection dimensions see appropriate drawings - with natural draft Table 1 continued 5

6 No. Item Unit Thermal power 1 Rated thermal power kw Adapted for co-operation with the unit Rated thermal power together with AZSD 4 Basic fuel for AZSD AZSD- 250 AZSD- 500# AZSD- 1000## 2xAZSD kw 300* 550*** 1000* 2000**** Comminuted wood of up to 30 mm granulation and 30-50% humidity 5 Thermal power adjustment range % Heated boiler surface m 2 25,0 49,0 78,0 174,0 7 Admissible static pressure MPa 0,3 8 Max. temp. of outlet water ºC 95 9 Required draft behind the boiler Pa >35 >40 >56 > Average exhaust gas temp. at the flue Basic fuel consumption at nominal power of AZSD Thermal efficiency at nominal power when coupled with AZSD ºC kg/h 118, ,6 783,7 % 81,9 81,9 81,9 81,9 13 Weight with insulation kg Funnel height m Funnel diameter mm Water volume l * - at n.c.v kj/kg *** - at n.c.v kj/kg ****- at n.c.v kj/kg - connection dimensions see appropriate drawings # - it is possible to order a boiler adapted for 2xAZSD-250, see fig.7. ## - it is possible to order a boiler adapted for 2xAZSD-500, see fig.9. - with natural draft The nominal thermal power for the set boiler + AZSD is given for optimum combustion conditions at defined fuel n.c.v. (fuel humidity). When fuel of higher n.c.v. will be used, the thermal power will grow proportionally in relation to the fuel the boiler was tested with 6

7 2.7. Technical acceptance The boiler is accepted by Manufacturer s Quality Dept EQUIPMENT AND TOOLS INDISPENSABLE FOR OPERATION 3.1. Equipment for inspection & measurement thermal pressure gauge 0-120ºC : 0,1-0,6 MPa 1 drain valves ¾ 2 sealing for stub connectors 4 flanges Equipment for maintenance & cleaning brush 1 ash rake INSTALLATION (ASSEMBLY) 4.1. General KWH boilers up to 1000 kw can be seated directly on boiler-room concrete floor if its thickness is not less than 10 cm and if it is founded on a solid, nonsettling substrate. However, it is recommended to seat the boiler on a platform to avoid corrosion of boiler s bottom and walls as a result of water penetration during emptying of the boiler. If boiler-room s floor does not fulfil mentioned requirements a foundation must be made. For boilers from 1000 kw on must be made a concrete reinforced foundation of 250 mm thickness. After hardening of floor or foundation it is possible to assembly the boiler. Now: in two-part boilers connect the combustion chamber with the exchanger; seal connections. connect the boiler to the central-heating system. The heating system must comply with adequate standards and regulations. fit the equipment i.e. drain valves and thermal pressure gauge. connect boiler s flue to the funnel, seal connections. The outlet duct (between flue and funnel) should have lift of not less than 1% and proper number of cleaning openings for removing of ash and soot. Before connecting boiler and funnel check funnel s dimensions acc. to the Table 1. If more than one boiler is connected to the funnel, funnel s diameter should be calculated as follows: F F- funnel s cross-section cm 2 =2573 x Q H cm 2, ( ) Q- sum of thermal powers of all boilers, kw H- funnel height, m 7

8 the value Q is calculated as the sum of thermal powers of all boilers optimum funnel height (calculated for sea level) should be taken from the Table 1. for locations above sea level the value from the Table 1 should be increased by 0,2 m for each 100 m above sea level. Finally, check all connections for leakage and complete paint coat Additional information Boiler should be located in the boiler-room so as it could be easily operated, cleaned, assembled and disassembled. For this purpose distance between boiler s front wall and boiler-room wall for manually fed boilers should be by 0,5 m greater than boiler s length but not less than 2,0 m. Distance between boiler s rear wall and any obstacle should allow for easy opening of cleaning door. For its proper work the boiler must be placed at the same height as foreseen in heating system design OPERATION MANUAL 5.1. Start-up Firing-up of the boiler may be started after checking if the boiler and heating system contains sufficient quantity of water i.e. if the expansion vessel contains water 100 mm above vessel s bottom is quite enough (it may be done using the signalling pipe). Check if all cleaning flaps are mounted and closed, especially rear wall cleaning flap. Firing-up should proceed slowly. Flue gate should be entirely open, sufficient quantity of air should be supplied through the ash door. The boiled is fired-up using wood laid on the grid. After the wood catches flame, add gradually fuel and fill the combustion chamber (i.e. start the AZSD) Operation (withot pre-furnace) Boiler s capacity adjustment (= outlet water temperature) should be done through proper positioning of the ash door (9) flap, applied for supply of air under the grid; quantity of air depends on boiler s thermal load. During initial combustion phase carbon monoxide is burnt only partially, thus secondary air should be supplied to the combustion chamber through the grid door (7) installed in the upper part of the boiler. If the boiler is fired with thicker coal (smaller billets or thick cobble) then it is recommended to fill the furnace entirely and to control combustion speed with air quantity supplied under the grid through the ash door flap. Before each next fuel charge remove ash and slag from the grid; during this operation the flue gate should be entirely open. In the course of boiler operation observe industrial safety rules and check indications of measurement gauges i.e. check if boiler s working parameters are not exceeded. 8

9 5.3. Coupling with AZSD The KWH boiler is adapted for coupling with a WOODWASTE COMBUSTION UNIT AZSD. The AZSD units are made within the range of thermal powers from 50 to 1000 kw and make possible automated burning of sawdust. Coupled with a boiler forms excellend thermal system. The system can be set in various configurations depending on required power and space of a boiler room. Basic arrangement of the set is as follows: the boiler of thermal power matched to the power of the entire set and an AZSD pre-furnace coupled on the right side of the boiler. The combustion chamber has an opening adapted to the AZSD unit; the size of openings depends on thermal power of an AZSD unit and made in such way that having installed the pre-furnace just seal the slot with a graphite cord to obtain tight connection and proper draft inside the furnace. The boiler coupled with an AZSD can be fired also with solid fuel e.g. coal, woodwaste, wood-like waste etc. without comminuting the fuel and disconnectiong the AZSD from the boiler. The boiler prepared for coupling with an AZSD can work alone as a solid fuel fired device, because opening for the AZSD are covered with fire-resistant door. Technical conditions for operation of the AZSD unit are contained in its operation manual. There are two modes of boiler s operation: Continuous firing with smothering of fire during night hours. Continuous firing. The user decides which mode should be selected. If start-up follows longer pause, first heat the funnel duct firing it with small, dry pieces of wood for 30 minutes. This rule is especially important during firing-up of a newly installed boiler, when all smoke ducts are cold and damped; smoke comes back through both charge and grid doors, also may appear the phenomenon of boiler s sweating i.e. dark fluid flows from the boiler, often forming a stain under it. This phenomenon recedes after one or two days. Prior to combustion end stop fuel feeding. After the fuel is totally burnt, open the charge and ash doors, also open the flue gate entirely to cool down the boiler quickly. Remove ash and slag, clean the combustion chamber walls, the grid, the combustion tubes and the flue, finally close cut-off valves (if fitted) Emergency stop If the boiler does not work properly: Stop feeding fuel. Open the charge & ash doors and open the flue gate to extinguish glow inside the boiler. 9

10 Remove fuel, slag and ash from the boiler. Close cut-off valves Water supply Quality of water supplied to the boiler and heating system has major influence on reliability and lifetime of the boiler. There are two reasons of boiler s wear: corrosion furr deposits Destruction (perforation) of walls as a result of corrosion appears rarely. Much more often pipes and equipment are polluted or even clogged with furr; valves are blocked. Especially dangerous are deposits at heat exchange surfaces. Furr deposits form an insulation layer, which decreases heat transfer to the heating media and may cause overheating of walls and consequently boiler s major damage. Furr deposits decrease also water flow. Most suitable water for boilers & heating systems is the rainwater. Do not fill the boiler with water of unknown hardness. It is permissible to supply water of maximum hardness of 4 n (1,44 mval/l) ; additionally the water should be of alkaline reaction (i.e. ph higher than 7) and free of salts and gases. Tap water should be softened before use in the boiler. Water losses within properly designed and mounted heating system are insignificant and require refilling very rarely INSPECTION AND MAINTENANCE MANUAL Inspection and maintenance of measuring equipment & operation tools should be done every 330 h of continuous work. During inspection it is recommended to check leakage on welds, connections etc. and if any remove them or seal connections Cleaning The furnace & grid should be cleaned daily before firing-up the boiler. Partially burnt fuel removed during cleaning should be thrown back into the furnace after firing-up. Boiler should be cleaned after every 200 h of continuous work with basic fuel. Combustion tubes and their connections should be cleaned at least every 10 days, but this period depends on many factors e.g. fired fuel, funnel draft, fuel humidity and may be shorter or longer than ten days. Cleaning of combustion tubes is very important for the sake of heat exchange, which is very intensive in this part of the boiler. Cleaning of the boiler should be done first after the fuel is completely burnt out, the glow is extinguished and the boiler is cold. Operations during cleaning: Open flaps (12) and (13), which close smoke walls of boiler s exchanger. 10

11 Clean combustion tubes and reversal chambers. Clean the flue. Check if the flue gate rotates freely. After cleaning of combustion tubes clean also the ash chamber in boiler s rear part (exchanger) through the cleaning flap (11) located at boiler s side Maintenance After each heating season clean the boiler thoroughly. Do not drain the water for the summer season. However, if the boiler-room is for any reason inactive during winter and there is risk of frost, drain the water. After cleaning complete the paint coat on the boiler REPAIR AND OVERHAUL Minor defects should be removed during current repairs. Periodical overhauls are made once a year, when the boiler is out of use. For inspection and for evaluation of the range of repair clean the boiler thoroughly. Overhaul consists usually in replacement of seals, door screens etc., rarely in replacement of water grid, which is worn due to furr deposit. After overhaul check tightness of boiler & heating system. After replacement of side walls and grid or after repair of breaks and leakage carry out the 0,4 MPa pressure test INDUSTRIAL SAFETY Operation of the boiler is safe only if the boiler is installed and operated according to adequate standards and present manual. Especially following rules should be observed: Fire up the boiler only if the boiler & heating system are filled with sufficient quantity of water and if inlet and outlet valves are open. To avoid intoxication with carbon monoxide the blow duct in the upper part should be always opened a little. Observe fire protection rules keep boiler s surroundings clean, do not store inflammable materials near the boiler. Connection to the funnel should be made very carefully, seal all connections with chamotte clay or graphite cord. If temperatures are low, the heating system is cold and if there is a risk that the system is frozen behind the boiler do not fire up the boiler before checking that there is circulation of water in the system. If there is no water in the boiler or in the heating system and the boiler is filled with glowing fuel IT IS PROHIBITED!: to fill the system with cold water risk of boiler s explosion to extinguish the furnace with water risk of boiler s break and carbon monoxide formation. 11

12 in this case remove fuel from the furnace, take it out from the boilerroom and extinguish. Fill the boiler & heating system with water after repair and cooling down. Water temperature and pressure must not exceed permissible values. Only trained and qualified personnel should operate the boiler Description and evaluation of residual risk Description of residual risk Although the MACHINERY WORKS HAMECH in Hajnówka take responsibility for design and structure of the device with regard to its safety, certain risk level during operation of the KWH boiler cannot be avoided. Usually, the residual risk results from improper behavior of an operator. The greatest risk appears during execution of following prohibited actions: - presence of unauthorized persons in the vicinity of the device during its operation, - filling of warm boiler with cold water, - extinguishing of the furnace with water - operation at exceeded values of temperature and pressure - cleaning of ash chamber without protection clothes When presenting the residual risk the KWH boiler is treated as a device, which until the moment of its start-up is designed and manufactured according to the state-of-art Evaluation of the residual risk If following recommendations are observed: - careful acquaintance with the manual - execution of all repairs of the electric system by an authorized electrician, - inspection of the earthing system after repair of the electric system prior to operation, - no unauthorized persons in the vicinity of operating machine, - operation, maintenance and repair of the device only by properly trained personnel, who are acquainted with the manual, - use of personal protection means: tight clothing, protection gloves, face protection etc. - observance of recommendations concerning operation and maintenance of the boiler contained in the manual the residual risk can be eliminated during operation of the KWH boiler without risk to people and environment List of warning and information signs for the KWH boiler. The signs are permanently put onto the housing of the device; their location is shown on figs.1-9. In the case of destruction / damage new signs can be delivered by the ZM HAMECH; together with the order give the description of the sign as in the table below: 12

13 No. Sign Description 1. Type plate 2. Plate HAMECH 3. Black letters, orange background KWH-600 Boiler thermal power 4. Black letters, yellow background Lift here. 5. White sign, blue background Prior to operation read the manual. 6. Black symbols, yellow background Plate Risk of explosion 7. White sign, blue background Face protection 8. White sign, blue background Hand protection 13

14 9.0. TRANSPORT Gthe KWH boilers are supplied completely assembled; from the size 180 on in two parts. The boiler should be transported in vertical position and protected from mechanical damage, which may cause break of welds or destruction of thermal insulation. The boiler is fitted with lifting eyes. Boilers must not be dropped down from a truck, turned over, but should be handled wity care. It is prohibited to place boilers one on another during transport and storage. The boiler should be stored under roof and protected from corrosion FAILURES Boiler failures result usually in decrease of its thermal efficiency. POSSIBLE REASONS: Poor fuel quality low heating value, great content of ash and fine culm. Low quality fuel should be used only when boiler s high thermal efficiency is not requested. Insufficient funnel draft Remove leakage of funnel, doors, flue etc. Check funnel s height acc. to the Table 1, check funnel duct Boiler and convection ducts polluted Clean ducts inside boiler and flue No air supply under grid To much ash in the furnace, to small opening of ash door No air supply to the boiler-room Enable fresh air flow through a window or a ventilation duct FUEL STORAGE / MINIMUM FUEL STOCK Fuel stocks may be prepared as: bank-type, with or without roof tank-type chamber-type, as a part of building s space Approximated average daily fuel consumption during heating season can be calculated as follows: Qzn Dz =3456 SPxWo D z average daily consumption Mg Q zn total rated power of all installed boilers kw S p average thermal efficiency of boilers % W o n.c.v. of stored fuel kj/kg 14

15 FIG. 1 Water boiler - structure 15

16 FIG. 2 Water boiler KWH 55 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

17 FIG. 3 Water boiler KWH 110 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

18 FIG. 4 Water boiler KWH 180 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

19 FIG. 5 Water boiler KWH 300 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

20 FIG. 6 Water boiler KWH 600 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

21 FIG. 7 Water boiler KWH 600/2xAZSD-250/ ( dimensions ) (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

22 FIG. 8 Water boiler KWH 1000 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

23 FIG. 9 Water boiler KWH 1000/2xAZSD-500/ ( dimensions ) (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

24 FIG. 10 Water boiler KWH 2000 / dimensions / (location of warning & information stickers is also shown) a-sign No. 1, b-sign No.2, c-sign No.3,d-sign No.4, e-sign No.5-8. Description of signs is given on p

25 CERTIFICATE For manufacturing and testing of the low-temperature steel water boiler type: KWH 1. Manufacturer: Machinery Works HAMECH Hajnówka Ul.Armii Krajowej 3 2. Boiler serial Manufacturing year Max. water pressure inside the boiler...mpa 5. Max. water temperature ºc 6. Wielkość kotła...kw WE CERTIFY that the boiler has undergone structure inspection and tightness test with pressure... MPa at Manufacturer s site and has been admitted for operation with pressure... MPa

26 WARRANTY CARD No.... Product : Central-heating water boiler Type: KWH Serial:... Manufacturing date:... Dispatch date:... Sale date: point of sale signature & stamp... Signature & stamp Quality Dept COMPLAINT FORM Mr (Mrs)... Address Warranty card No Product type & serial Purchase date Start-up date Short description of the defect

27 WARRANTY CONDITIONS 1. The manufacturer is obliged to repair for his own cost any physical defect revealed during warranty period. 2. The warranty period lasts 12 months from the sale date. 3. The manufacturer ensures the warranty service term of 14 days from the complaint date. 4. The warranty period will be lengthened by the time of repair, counting from the complaint date to the date of the repair s finish, if the defect has made the device out of order. 5. The manufacturer takes no responsibility resulted from the warranty in following cases: a) mechanical damages rsulting from improper transport or storage, b) improper assembling, maintenance and operation (not conformable with the operation manual), c) repairs conducted by unauthorized personnel without manufacturer s agreement, d) introduction of structure changes without written manufacturer s agreement, e) if the buyer has not informed the manufacturer in the 14-days term, that the device is not complete. f) Firing with woodwaste poluted with chemical substances causing corrosion of boiler s interior (eg. sawdust from a tannery). 6. All adjustment and maintenance works, as well as replacement of parts, which should be performed by the user as described in the manual, are not warranty repairs. 7. The warranty card is valid if contains dealer s sign, stamp and date of sale. 8. A copy of the warranty card can be issued if the buyer submits any document of purchase. 9. If the complaint was groundless all costs bears the buyer. 10. Complaint should be submitted in written according to enclosed complaint form. In urgency the complaint may be submitted by phone. User should record the time of the talk and the name of the person, which accepted the complaint. The phone complaint should be confirmed in written a.s.a.p. 11. Any contention not regulated in present warranty card is subject of The Civil Code regulations, Art CAUTION!: - Be acquainted with the operation manual before operation, - In the case of lack of the warranty card user has no right to repairs for manufacturer s cost. 27

28 ZAKŁADY MASZYNOWE HAMECH P. P HAJNÓWKA, ul. Armii Krajowej 3 tel fax CONFORMITY DECLARATION No. 1/KWH/04 Product: WATER BOILER C.O Type: KWH-55; 110; 180; 300; 600; 1000; 2000 Serial... Manufacturing year... Thereby we responsively declare that the product being the subject of present declaration is conformable with following standards and other normative regulations: Directive 98/37/EU /Decree of the Ministry of Economy, Labor and Social Policy dated on r. for basic requirements for machinery and safety elements (Dz.U.Nr 91, pos. 858 dated on r.) including the standard: - PN-EN-292-2:2000 Machinery. Safety. Basic terms, general design principles. Principles and technical requirements. and other standards: - PN-EN z part.5 Heating boilers for solid fuel with manual & automated fuel feeding and rated for power below 300 kw Terminology, requirements, tests and marking The present conformity declaration becomes void if the KWH boiler will be modified or rebuilt without our consent. Hajnówka,