Operation and maintenance manual for the boilers with feeder. Q-Per

Transcription

1 Operation and maintenance manual for the boilers with feeder Q-Per

2 Thank you for purchasing PEREKO boiler. This technical documentation applies to feeder boilers from the Q-PER series and contains all necessary information and recommendations for their operation. Please carefully read this document before start-up of the boiler. Observance of the guidelines contained in the manual will ensure safety and prevent against misuse of the equipment and its faulty operation. A set of documents intended for the user contains manual for the microprocessor temperature controller (regulator), feeder and fan, which should be read and understood. Manuals should be kept and stored in a way allowing using them also during servicing of the equipment. TABLE OF CONTENTS 1. INTRODUCTION Obligations of the user and guidelines concerning safety Selection of correct power of the boiler TECHNICAL DESCRIPTION Intended use Transport i magazynowanie Design description Boiler design diagram Operation and technical parameters Fuel Equipment BEFORE START-UP Boiler room Boiler setting Connection to chimney Connection of central heating and domestic hot water system Connection of the boiler to electrical system Filling the system with water SERVICE MANUAL Safe operating conditions Before first use Boiler ignition Approximate parameters of the controller Fuel refilling Boiler stopping Cleaning and maintenance Emergency stopping of the boiler BOILER OPERATION DISTURBANCES BEFORE CALLING THE SERVICE WARRANTY TERMS AND CONDITIONS... 16

3 1. INTRODUCTION 1.1. Obligations of the user and guidelines concerning safety To assure operational safety and maintain optimum operation before setting and connecting the boiler check whether all of the equipment: components are in good working order and whether the read the manual of the boiler, controller, feeder and observe boiler has a complete equipment for servicing and cleaning, their guidelines, the boiler should be cleaned on regular basis, at least once the manual should be kept and stored in a safe place in the per week, removing a layer of deposited soot and ash, which boiler room allowing using it during any moment of boiler reduces the efficiency of the boiler, operation, ensure continuous access to the equipment, ensure that the drive is never operated by children or persons avoid exceeding water temperature in boiler over 95 C, who have not read the contents of the manual and adults maintain operating pressure not exceeding 2 bar. with disabilities preventing them from the safe operation, NOTE! Boiler installation in accordance with the applicable the system should be made in compliance with the applicable regulations and in accordance with the rules and recomried out by a qualified installer. standards and regulations and first start-up should be carmendations contained in the manual, 1.2. Selection of correct power of the boiler Nominal power of purchased boiler (that is maximum thermal efficiency, which can be reached during continuous use er calculator on our website Furthermore, you Approximate boiler power can be calculated using a pow- maintaining the efficiency declared by the producer) should be should also consider: thickness of walls and insulation, the selected in a way corresponding the real demand for thermal thermal permeability of first fix joinery (including: tightness of energy even in case of occurrence of very low temperatures. windows and doors, type of window panels used) and climatic Do not purchase boiler with power higher than this planned zone, where the heated building is located. in the design. Selecting boiler with too high power will result in higher fuel consumption and lack of full control over the combustion process and therefore higher operation costs, while too small boiler will not ensure sufficient power necessary to heat up the building. Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 3

4 2. TECHNICAL DESCRIPTION 2.1. Intended use Steel heating boilers Q-PER are intended for installation in the central heating water systems in single-family houses, garages, maintenance rooms etc. These boilers belong to a group of low-temperature boilers and are not subject to registration in the regional Office of Technical Inspection. They are intended for operation in water distribution piping of the gravity hot-water 2.2. Transport and storage Central heating boiler type Q-Per with feeding unit the fuel is delivered in assembled condition. All the set is foiled and placed systems or in open systems with forced circulation, which are equipped with protections in compliance with the requirements PN-91/B applying to the protections of the open water heating system (considering the Regulation of the Minister of Infrastructure, Journal of Laws of 2009 no. 5 item 461). on a transport pallet. The boiler should only be stored indoors roofed Design description Water unit Q-Per series heating boilers are made of P265GH grade steel sheet, suitable for construction of pressurised equipment, operating at higher temperatures.heat exchanger panels are welded, while the unit casing is reinforced with brackets. Location of convection ducts allows cleaning using the upper door. Ash and soot are removed through the bottom door Doors The boiler is equipped with upper door (in models with higher capacity, also middle door) used for cleaning and bottom door used for ignition and removal of ash produced in the combustion process Water jacket The water jacket is a space filled with heating medium - water. The structure is made of steel sheet P265GH for pressure equipment intended for operation at elevated temperature Boiler casing Casing panels are fixed to the boiler footing. The casing protects mechanical components and has a decorative function. The panels are made of aesthetic powder-coated modules with high anti-corrosive resistance Electronic controller The microprocessor controller installed in the upper part of the boiler allows programming the working temperature of the boiler. The controller is additionally equipped with the operation control and emergency shutdown sensor, switching the system off when water temperature exceeds 95 C. See details in the Microprocessor temperature controller operation manual attached to the boiler documentation Fuel feeding system Takes fuel from the hopper and ensures automatic feeding of the burner section, using a steel screw conveyor. 4 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

5 Water ports Water ports are used for connecting the boiler to the central heating system. Supply and return ends are of G 1 size with internal thread Exhaust gas swirlers Exhaust gas swirlers are installed in convection ducts to swirl the exhaust gas stream, which increases boiler efficiency and power Flue Exhaust flue is an integral part of the boiler, extracting exhaust gas towards the flue duct Boiler design diagram 1. Boiler casing 2. Upper inspection door 3. Bottom door 4. Electronic controller 5. Cast-iron burner grate 6. Ash drawer 7. Charging hopper 8. Feeder unit with gearmotor 9. Fan 10. Boiler footing 11. Exhaust gas swirler supply end return end 14. Power strip 15. Flue Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 5

6 2.5. Operation and technical parameters Parameter Unit Model D [mm] 127 Dimensions L [mm] 1175 H [mm] S [mm] Primary fuel eco-pea coal Range of thermal power* [kw] 2, Area of heated rooms** [m²] Charging capacity of container [dm³] Boiler water tank capacity [dm³] Maximum working pressure [bar] 2 Required min. chimney draught*** [mbar] 0,16 0,2 Temp. of flue gas at nominal power [ C] Temp. of flue gas at minimum power [ C] Flue gas mass flow at nominal power [g/s] 5,93 8,42 11,62 16,14 Flue gas mass flow at minimum power [g/s] 1,83 3,29 4,54 8,81 Fuel consumption for nominal power with a heating value of 28 MJ/kg [kg/h] 1,1 1,82 2,81 3,53 Water flow resistance at nominal power ΔT=10K [Pa] 720 Water flow resistance at nominal power ΔT=20K [Pa] 180 Water supply temperature [ C] min. 57 / max. 85 Burn time [h] Power supply / Power [V/W] 230 / 50 (<185 W) Weight of boiler without water [kg] Efficiency PN-EN 303-5:2012 [%] 90,8 93,3 5th class PN EN 303-5:2012 yes Energy-efficiency rating B *maximum water temperature in the boiler 95 C; **for rooms height 2.5 m and insulation with styrofoam 15 cm (q = 55 W/m²); ***PN-EN 12809, PN-EN 303-5:2002; 6 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

7 2.6. Fuel The basic fuel used in the Q-Per boiler is 31-2 pea coal: granulation: 5 25 mm calorific value: > 28 MJ/kg 2.7. Equipment Before setting the boiler, check additional devices and proper operation of the accessories. Complete set of components contains: assembled boiler with a feeder and hopper in the casing, moisture content: < 11% ash content: < 7% sulphur content: < 1% coaking ability: RJ < 5 electronic controller, brush, hook, ash shovel, exhaust gas swirlers and ash drawer. 3. BEFORE START-UP 3.1. Boiler room It should be a separate room with height not lower than 2.2 m in the newly constructed building (in the already existing buildings the allowable height equals to 1.9 m). It should have artificial lighting installed and have natural lighting as far as practicable. It should have gravity ventilation in good working order, including: 1. air-supply duct in the external wall with cross-section not lower than 50% of chimney cross-sectional area on height maximum 1 m over the flooring or not lower than 200 cm 2 for boilers with power up to 25 kw or 400 cm 2 for boilers over 25 kw, 3.2. Boiler setting The boiler requires non-flammable flooring, in form of a foundation, but it is allowed to place it on non-flammable wall base with height not lower than 50 mm. Boiler should be placed in a way ensuring free access to the equipment, allowing its cleaning and maintenance. Therefore, while setting the boiler it is recommended to maintain minimum distances from the individual walls: 2. separate air-exhaust duct on the internal wall with cross-section not lower than mm with an outlet located under the boiler-room roof near the chimney. Floor gully and floor with 1% slope towards the outlet should be planned in the central part of the room. Flooring and walls in the whole room should be made of non-combustible materials. The doors to the boiler room should open outwards. NOTE! It is forbidden to use mechanical exhaust ventilation in the room where the boiler was installe. distance from the front of the boiler to opposite boiler room wall should not be smaller than 2 m, distance of boiler side from wall of the boiler room should be lower than 1 m, the distance of rear part of the boiler from the wall of the boiler room should be equal to at least length of the connection, that is 0.25 m. Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 7

8 3.3. Connection to chimney 1. It is necessary to prepare stand-alone, tight chimney flue, which will be used for flue gas from the boiler. 2. The flue should be placed at least 1.5 m over the roof ridge to avoid the occurrence of backdraught. The intersection of the flue should be appropriately selected for the boiler power and height of the chimney. Approximate calculations of chimney height and intersection can be carried out using a chimney intersection calculator available on the website Regardless of the results of the calculations the minimum intersection of masonry chimney should not be lower than cm! The intersection of non-insulated steel chimneys should be bigger by 20% and the chimneys made from steel pipes should be about 15-20% higher than brick chimneys. 3. Check condition of the chimney (preferably by a chimney sweep) before connecting the boiler to the chimney and check whether the chimney if free from connections of the heating elements. 4. The boiler should be connected with chimney using a connector. It is not recommended to use the connection at a straight angle because it will cause a loss in the chimney draught. Flue with chimney should be joined with a connector made of steel sheet of thickness 3 mm (to be purchased from the boiler producer). We put it on the outlet from the flue, fix on the chimney and seal with high-temperature silicone. The connector should be directed slightly upwards from 5 to 20. If boiler flue will have a length over 400 mm then it is recommended to insulate it with a thermal insulation. NOTE! Boilers should be installed in compliance with the applicable Regulation of the Minister of Infrastructure (Journal of Laws of 2002 no. 75 item 690 and Journal of Laws of 2009 no. 56 item 461.) In addition, it is recommended to use chimney liner resistant to corrosion: chemical, pitting, intercrystalline and surface Connection of central heating and domestic hot water system Open water heating installations The Q-PER boiler is suitable for supplying open water central heating systems with gravitational or forced circulation. The system in which the boiler operates must meet the requirements of the Polish standard PN-91/B Ogrzewnictwo i ciepłownictwo Zabezpieczenie instalacji ogrzewania wodnego systemu otwartego Wymagania / Heating and district heating Protection of open water heating installations Specifications/. The manufacturer reserves the right to introduce design modifications. 8 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

9 Boiler Equalizing tank Non-return ball valve Central heating pump Pump Non-return valve Exemplary diagram of the open central heating system with four-way valve and hot water heater Heaters Storage-type water heater for domestic hot water Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 9

10 Closed water heating installations The Q-PER boiler with automatic feeding may be used in closed water heating installations, provided that: the system is equipped with a membrane expansion vessel, a heat excess extraction device (REGULUS DBV 1 dual function cooling valve) is installed, max. 2.5 bar safety valve is installed. NOTE! These devices must be inspected at least twice a year. The first inspection must be conducted during the seasonal boiler start-up with the water heating installation way valve The design of the heating system must include boiler protection against return of excessively cold water from the installation. Use of 4-way mixing valve is recommended. It allows increasing the temperature of water returning to the boiler. The 4-way valve mixes warm water from the feeding circuit with colder water from the heating circuit return, and therefore: protects the boiler against low-temperature corrosion and preliminary wear, increases the efficiency of heating of domestic water in the DHW tank, allows flexible control of heating water temperature in relation with the heating system requirements, increases the efficiency of the entire system. Design and installation of a heating system appropriate for a given building must be performed by properly qualified persons. Central heating systems may be different, thus the guidelines included in the central heating design must be followed. A sample scheme of boiler connection with the central heating and domestic hot water systems in an open heating system with gravitational or forced water circuit is presented on page Connection of the boiler to electrical system Boiler room should be equipped with electrical system with equipped with protective conductor contact with connected rated voltage 230/50 Hz in compliance with the applicable regulations. protective conductor terminal PE to protect against electric The system should be terminated with plug-in socket shock Filling the system with water Filling the boiler with water before first start-up 1. Flush heating system and boiler before filling it with water to remove all contaminations. 2. Fill the system with water through the drain cock using the flexible hose. Water intended for feeding the heating boiler should meet the requirements of the PN-93/C standard. Quality of water filling the central heating system influences its durability therefore this water should be free from the contaminations, oil and aggressive chemical substances. Water hardness should not exceed 2-4 (mval/l). Too hard water causes deposition of sediment in the boiler and heating system what decreases efficiency and may damage the boiler. 3. Stop feeding of water when the system is full that is water will start flowing out from the signalling pipe of the expansion vessel located in the highest point of the system or when the pressure gauge indicates 5 bar. Refilling should take several seconds to make sure that the water flows down from the vessel. 4. Close boiler drain cock and disconnect flexible hose from the equipment when the system is filled. 10 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

11 Refilling the system with water Heating system with open container allows direct contact of heating water with the air what results in evaporation and necessity to refill it. NOTE! It is forbidden to add cold water to hot system. Adding water to hot components of the boiler may damage it and is synonymous with loss of the warranty.. The system can be refilled with water only when the boiler is cold. Firing up should be restarted after filling the system Draining water from the system It is not recommended to drain the water from the system after the heating season because it increases the risk of occurrence of the corrosion and formation of boiler scale. The exception is a time needed to carry out necessary repair and long-term standstills of the boiler during strong frosts. In the latter case it is recommended to drain water from the system (to avoid freezing and therefore damaging to the system) and refilling it with water when the frost is over. Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 11

12 4. SERVICE MANUAL 4.1. Safe operating conditions To maintain safe operating conditions for the boiler you should: Execute heating system correctly in compliance with the requirements of the standards: PN 91/B-02413, applying to the protection of open water heating installations, considering the Regulation of the Minister of Infrastructure, Journal of Laws of 2009, no. 56, item 461. Fill the system with water correctly. Do not refill the system with cold water during operation of the hot boiler. It is forbidden to operate the boiler if the water level in the system is below the level indicated in the central heating system user manual. Never use flammable liquids, e.g. petrol, for firing up. Do not extinguish the fire in the furnace by pouring it with water. Use suitable equipment and protective clothing (gloves, goggles, head protection, shoes) during work with the boiler 4.2. Before first use Before starting up the boiler for the first time: 1. Verify correct installation and power system connection of: 4-way valve actuator (if used), central heating pump, DHW and floor heating pump (if used), boiler sensor, fan, feeder. 2. Check the heating system: check tightness, inspect for any leakages from the boiler or the installation, and take special care during servicing of non-insulated components (e.g. doors), which may heat up to high temperatures resulting in risk of burn injuries. Do not stay on the side of the boiler during the opening of the doors and pay attention to flames. Take care of cleanness in the boiler room, ensure proper ventilation and remove corrosive and flammable materials located nearby. The boiler should be cleaned only when it does not work. Use mobile lamps supplied with a voltage lower than 24 V during works connected with servicing of the boiler. Take care of the good condition of the boiler and hydraulic system. Take care of boiler cleanness. check for any frozen water in the pipes and the expansion vessel, control proper and sufficient water level and pressure (depending on the building height, the pressure gauge should indicate 0.8 to 1.5 bar). If water pressure is too low, refill water (only when the boiler is cold). 3. Close the upper inspection door and feeding hopper tightly. 4. Check if the boiler is properly connected to the chimney. 5. Perform chimney draught measurement. 12 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

13 4.3. Boiler ignition 1. Switch on the controller (see: Boiler controller operation manual) and activate manual work mode, 2. Check operation of individual devices: fan, feeder, central heating pump activation, 3. Fill the hopper with a proper fuel and close tightly, 4. Switch on the fan. The feeder starts to supply fuel for approx. 2-3 minutes in manual mode. Wait until the fuel appears on the cast-iron burner grate. 5. Ignite fuel using wood chips placed manually on the grate. 6. After ignition, set proper parameters on the controller (boiler operation temperature, feeding time, feeding pause time and blow-in force), according to the values specified in the controller and feeder operation manual. CAUTION! Burner door must be tightly closed in the automatic boiler operation mode. CAUTION! Do not set boiler temperature above 57 C! It increases the possibility of dew point appearance, which accelerates low-temperature corrosion of the heat exchanger. Maintaining water supply temperature below 57 C when using inappropriate solid fuel types leads to intensified boiler wear and lowers the its efficiency. After boiler ignition, entire control of the combustion process is taken by the controller (see. Controller instruction manual) that maintains the set water temperature in the boiler with reference to the heat demand of the building Approximate parameters of the controller The controller is pre-configured, but its input parameters increasing the blow-in force. In the opposite situation, when the change depending on the fuel used and may require individual boiler reaches the set temperature easily or starts to discharge adjustment. Any adjustments shall be made depending on the unburnt fuel, the feeding pause must be extended to provide heat demand, type and quality (calorific value) of coal, or depending on the size of the heating system. reduced accordingly. The blow-in force shall be adjusted based more time for fuel combustion, and the blow-in force must be Setting appropriate parameters ensures economic fuel consumption. The adjustment consists in setting the feeding pause bright-yellow flame. Too weak blow-in force results in red flame on flame observation. Properly adjusted blow-in force gives proper for the heat demand. If the boiler does not reach the set and occurrence of black smoke. Excessive blow-in force results temperature, the feeding pause must be gradually shortened, in short white flame Fuel refilling In order to ensure continuous boiler operation, the hopper must be systematically refilled. In case of fuel shortage, the controller shuts down the entire system and displays a fuel shortage warning. While refilling fuel, switch off the fan using the controller button to prevent smoke backflow to the hopper. CAUTION: During the loading, make sure that fuel is free of impurities that might block the feeder (rubble, stones, wood fragments or metal scrap) Boiler stopping Switch off the fan using the controller button, then scrape the heat to the ash pan using the hook supplied along with the boiler. Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 13

14 4.7. Cleaning and maintenance Keeping the boiler clean is necessary for its reliable and faultless operation. Even a thin layer of deposit impairs the recovery of exhaust gas heat, which results in lower boiler efficiency. Accumulated deposit may be the cause of damage to the device. In order to prevent that, the boiler must be thoroughly cleaned at least once in a week. After damping and cooling down of the boiler, remove soot from the combustion chamber and the upper part of the heat exchanger using a wire brush and a scraper Emergency stopping of the boiler Always stop the boiler in any of the following situations: to stop the boiler immediately, remove the heat using a metal 1. water leakage from the boiler, shovel and place it in a metal container. Bring it outside the boiler room and put out with water. 2. temperature increase above 90 C, 3. necessity to refill the evaporated water in the system and CAUTION! Do not extinguish hot fuel with water inside the radiators. boiler room! In order to stop the boiler operation, perform the procedure described in Boiler stopping section. Should it be necessary 14 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

15 5. BOILER OPERATION DISTURBANCES BEFORE CALLING THE SERVICE The customer will bear the costs of travel and work of the sere technician in case of the unjustified calling of producer s service. Therefore, before you call the producer s service please read the section concerning the most often occurring disturbances in boiler operation and methods of dealing with them. Symptom Cause Repair Smoking outwards insufficient chimney draught insufficient chimney height too small chimney s intersection very low atmospheric pressure contamination of chimney flue remove leaks in chimney, flue or boiler doors lift chimney to height min. 1.5 m over roof ridge adjust damper of the flue, decrease blowing force use fan supporting chimney draught clean ducts Low thermal efficiency of the boiler Moistening and tar deposits inside the boiler (symptoms similar to leak) combustion of low heat fuel no supply of air to the boiler-room failure of forced draught fan or controller contamination of gas passes in smoke tubes chamber replace fuel with high heat fuel facilitate correct air supply through the window or air supply duct re-set parameters in compliance with the user s manual or replace with a new one clean passes, adjust the damper low temperature maintained in the boiler use boiler in temp. min. 57 C Leak to be assessed by the producer repair by PEREKO service Too high chimney s draught adjust chimney draught with a damper in boiler flue Fuel suspends in the container Too moist fuel Remove fuel from the container and dry it Screw-conveyor feeder does not start Smoking from container Too high fuel consumption Fuel does not burn completely no supply controller switched off incorrect setting of fuel feeding time moist fuel incorrect setting of parameters bad quality of fuel too short time between fuel feeding bad quality of fuel check supply check the main switch of the controller set correctly the time for fuel feeding on the controller check and dry the fuel the assistance of the producer s service replace fuel set the correct interval between successive fuel feeding replace fuel Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 15

16 6. WARRANTY TERMS AND CONDITIONS 1. Envo sp. z o.o. with registered office in Starachowice ul. Radomska 76 is a producer of PEREKO boilers. 2. The warranty card is invalid without a date, stamp and signatures of the producer, retail outlet and the seller. 3. Copies shall not be issued if the warranty card is lost. 4. The warranty card or purchase invoice is the only documents authorising the purchaser for free warranty repair. 5. The producer provides a warranty for the operation of the heat exchanger for 60 months and 24 months for the components. 6. Warranty for tightness of welding joints is not synonymous with warranty for tightness of the whole boiler and is applicable in case of leaks only on welding joints. 7. The producer reserves the right to make improvements or modifications without prior notice. 8. The warranty is prolonged by a period from the date of the notice of boiler repair to the date of its execution. Execution of the repair is confirmed in the warranty card and report from visit intended for removal of fault. 9. The producer will consider the claim within 14 days from the date of the notice. 10. During the warranty period the boiler can be replaced with a new one if the Producer (based on the decision of the authorized expert) decides it cannot be repaired. 11. Quality claims concerning the boiler should be made in sales location or directly to the producer. 12. The warranty does not cover boiler connection, clamping grips, heat doors, sealing cord located in the external doors and tools for servicing and cleaning, ceramic plates and swirlers. 13. Warranty for electronic temperature controller (regulator), fan and automatic coal feeding system is provided by their producer and it is enclosed to set of boiler documents. 14. The user shall bear the costs of travel and work of the service technicians in case of unjustified claim and groundless calling the producer s service. 15. The above manual for the feeder boilers is the property or ENVO sp. z o.o. It should not be copied and use by the other economic entity or natural person without written consent from the owner. All rights reserved. NOTE! The producer does not accept any liability for effects of incorrect installation, incorrect operation of the boiler, non-observance of the recommendations included in the user s manual or incorrect maintenance of the equipment. 16 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

17 The warranty becomes void in case of: 1. Use of protections incompatible with PN-91/B Incorrect connection in closed system acc. to the Journal of Laws of 2009, no. 56 item Incorrect transport and storage of the boiler. 4. Starting the boiler without sufficient amount of water. 5. Damages resulting from overheating of the boiler. 6. Repairs during the warranty period by person and companies without authorization from the producer. 7. Damages resulting from non-observance of assumptions contained in the manual. 8. Exceeding allowable working pressure 1.5 bar. 9. Mechanical damages or intervention in the boiler structure by non-authorized persons. 10. Corrosion of steel components resulting from maintaining too low temperature of water - below 57 C with simultaneous use of incorrect, moist fuel. Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications. Page 17

18 SERVICE ASSISTANCE Date Comments Signature 18 Page Operation and maintenance manual for the Q-PER series boilers with feeders. The producer reserves the right to introduce technical modifications.

19 WARRANTY CARD for hot water heating boiler used in the central heating system Serial number Type Production date QC mark Guarantee for tightness of welding connections of water casing in the boiler is provided for 10 years, 60 months for tightness of the heat exchanger and 24 months for the other components. The beginning of the warranty period for the PEREKO boiler is the date of purchase confirmed by a proof of purchase. Sign and stamp of the producer Date of retail sale Sign and stamp of commercial unit

20 Producer: Envo sp. z o.o., Starachowice, ul. Radomska 76, POLAND Technical support tel. +48 (41) , fax +48 (41) serwis@pereko.pl, mobile , ,