KEPO AC 15 Installation And Operating Manual

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Dear user,

Please read this manual carefully before installing and commissioning the boiler.

We wish you a warm and pleasant winter.

Kepo

Table of Contents

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Summary of Contents for KEPO AC 15

Page 1 Dear user, Please read this manual carefully before installing and commissioning the boiler. We wish you a warm and pleasant winter. Kepo...
Page 2: Table Of Contents
Table of contents Boiler specifications Introduction; Installing the boiler on the central heating system Safety Necessary installation and commissioning requirements Boiler dimensions and connections Safety precautions Installing the boiler on chimney systems Connecting and commissioning the boiler Operating instructions Miscellaneous settings Alarms Boiler cleaning and maintenance Frequently asked questions...
Page 3: Boiler Specifications
Boiler specifications AC/MC 15 AC/MC 20 AC/MC 25 AC/MC 35 Weight 212/205 255/248 280/272 416/410 Height 1155 1280 1430 1600 Width Depth 1050 Flue pipe diameter Ø Pellet tank capacity Power consumption at start Power consumption in operation Nominal voltage 220-240 220-240 220-240...
Page 4: Introduction; Installing The Boiler On The Central Heating System
In the event of damage or destruction, a new manual will be provided at your request by our customer service or a technician authorized by Kepo. This boiler should be used only for the purpose for which it is intended by the manufacturer. The manufacturer has no contractual or non-contractual liability for damages to people or the environment resulting from poor installation, inappropriate handling or failure to follow the instructions listed in this manual.
Page 5: Safety
Safety All boiler modifications are forbidden unless prior approval has been given by the manufacturer. • At the first commissioning, the boiler should be handled by a person who is familiar with this manual and has • been trained by our technician. In case additional training is necessary, please contact our customer service. Make sure that there are no blockages or reductions in the dimension of air vents in the room where the boiler •...
Page 6: Necessary Installation And Commissioning Requirements
In case you have any further questions or you need small corrections in the dimensions of the boiler room, ventilation or flue gas exhaustion, please contact a Kepo technician or our customer service: + 381 31 783 927. If you meet these requirements, you provide yourself with an economical, safe and long-term use of our product.
Page 7 To exhaust flue gasses, use only ø80, ø100 or ø120 flue pipes with silicone rubber bands The maximum amount of flue pipes to connect the boiler to the chimney is as follows: Tee - 1 piece • 1000mm or 500mm straight pipes – 3m maximum •...
Page 8: Boiler Dimensions And Connections
Dimensions and connections - AC/MC 15, AC/MC 20, AC/MC 25...
Page 9 Dimensions and connections - AC/MC 35...
Page 10: Safety Precautions
• The boiler must have a separate inflow of fresh air. • Kepo pellet boilers should be placed in boiler rooms only. They must not be installed in rooms where people • live. Do not bring the boiler into contact with water as this may cause a short circuit of electrical components, boiler •...
Page 11: Installing The Boiler On Chimney Systems
Installing the boiler on chimney systems A chimney must comply with the following conditions: It has to be set at a proper clearance to combustible or explosive materials. • Devices other than the boiler may be connected to the chimney only with a special written permission and •...
Page 12: Connecting And Commissioning The Boiler
Connecting the boiler Connect the boiler to the flue system and the pipe heating system. • Provide sufficient inflow of fresh air. • Plug the boiler into a 230V ± max 5% socket. • Prior to commissioning, check if everything is done in line with this manual. •...
Page 13: Operating Instructions
Operating instructions Users operate the boiler exclusively via the control unit shown in the picture below. Figure 1 shows the display • when the boiler is turned on at the switch, but is not running. Figure 1 Press and hold button 4 to turn on/off the boiler. The display shows START after a few seconds, as shown in •...
Page 14 When the flue gas temperature reaches the requiered level, FLAME LIGHT appears on the display (Figure 4). • Figure 4 A few minutes later, when the flame is stabilized, the boiler enters regular operating mode and WORK appears • on the display (Figure 5). Figure 5 You can adjust the temperature of water in the boiler by pressing button 1.
Page 15 Pressing button 6 adjusts boiler power – the power it should work at to reach the set temperatures. The display • shows SET OUTPUT, as shown in Figure 7. Press 5 and 6 to change the power. Figure 7 The boiler will reach the set temperature at the maximum power of P5. As the temperature approaches the set value, the boiler will decrease the power.
Page 16 In the stand-by mode (Figure 9) the boiler raises temperature by 2°C once the desired value is reached, and • then it shuts down. When the set temperature (of water or boiler room) drops by 2°C below the set value, the boiler will automatically perform the entire startup procedure.
Page 17 Press and hold button 4 to shut down the boiler . • The boiler stops feeding pellets and turns up the exhaust gas ventilator. The display shows CLEANING FINAL, as shown in Figure 11. This mode lasts 10 minutes, until the boiler gets cold. Figure 11 When it gets cold, the boiler shuts down and OFF appears on the display (Figure 12).
Page 18: Miscellaneous Settings
Miscellaneous settings Press 3 (set) to enter the miscellaneous settings menu. • Press 5 and 6 to navigate through the menu; press 1 and 2 to change values for the given parameter; press 3 to confirm the value or enter a new submenu; press 4 to go back to the previous menu. Menu 01 Set Clock - setting the time Menu 02 Set Chrono - setting the weekly automatic mode Menu 03 Select Language - setting the language...
Page 19 03 - Stop program 1 Set time/off 04 - Monday program 1 On/off 05 - Tuesday program 1 On/off 06 - Wednesday program 1 On/off 07 - Thursday program 1 On/off 08 - Friday program 1 On/off 09 - Saturday program 1 On/off 10 - Sunday program 1 On/off...
Page 20 03 - Stop 1 weekend Set time/off 04 - Start 2 weekend Set time/off 05 - Stop 2 weekend Set time/off 03 - Setting the language English, Italian, Spanish, German, French 04 - Setting the season Winter Summer 05 - Stand-by mode On/off 06 - Buzzer mode On/off...
Page 21 After setting the date, press 3 (set). TIME CLOCK appears on the display, as shown in Figure 15. Press 1 and 2 to set the hour. Figure 15 After setting the hour, press 3. MINUTES CLOCK appears on the display (Figure 16). Press 1 and 2 to set the minutes.
Page 22 Pressing 3 will set the month, as shown in Figure 18. Choose a month by pressing 1 or 2. Figure 18 Press 3 to set the year (see Figure 19). Choose a year by pressing 1 or 2. After this, press 4 several times briefly to return to the home screen that shows the time. Figure 19 Menu 02 –...
Page 23 M-2-1 - Enable Chrono • Enable Chrono for automatic boiler operation: Once you are in the SET CHRONO submenu, press 3 (set). The display shows ENABLE CHRONO (Figure 21). Figure 21 Press 3 (set) to turn off the timer. The display shows OFF ENABLE CHRONO, as shown in Figure 22. Figure 22 Pressing 1 will change the value to ON (Figure 23), meaning that the timer is turned on.
Page 24 M-2-2 - Program Day • This option is used to program daily automatic operation of the boiler. When the boiler is in this mode, it will switch on/off every day at the same time, from Monday to Sunday. It is possible to set twice a day the time when the boiler should switch on/off (it does not necessarily have to be two times of switching on and off).
Page 25 Press 3 (set) and set the first shutdown time of the boiler by pressing 1 or 2 (Figure 27). Figure 27 Press 3 (set) and set the second startup time of the boiler by pressing 1 or 2 (Figure 28). Figure 28 Press 3 (set) and set the second shutdown time of the boiler by pressing 1 or 2 (Figure 29).
Page 26 M-2-3 - Program Week • This option programs weekly automatic operation of the boiler, from Monday to Sunday. It provides you with a possibility to set four times of switching on and off during the day. You may also skip days when you do not wish the boiler to work.
Page 27 Press 3 (set) and set the first shutdown time of the boiler by pressing buttons 1 or 2 (Figure 33). Figure 33 Press 3 (set) and choose Monday as the day when the boiler should be turned on (MONDAY ON/OFF) by pressing 1 or 2 (Figure 34).
Page 28 M-2-4 - Program Week-End • This option enables you to turn the boiler on and off twice a day at the weekend (on Saturdays and Sundays). ENABLE CHRONO (see Figures 22-24) has to be activated (ON). Press 3 (set) on the home screen. Press 5, then 3 (set) and then press 5 three times. The display looks as in Figure 36.
Page 29 Then press 3 and set the time of the first boiler shutdown by pressing 1 or 2 (Figure 39). Figure 39 Press 3 and set the time of the second boiler startup by pressing 1 or 2 (Figure 40). Figure 40 Press 3 and set the time of the second boiler shutdown by pressing 1 or 2 (Figure 41).
Page 30 Menu 03 - Select Language - Setting the menu language • Press 3 (set) on the home screen, then double-press 5. The display looks as in Figure 42. Figure 42 Then press 3 (set) and change the menu language by pressing 1 or 2, as shown in Figure 43. Press 4 several times briefly to return to the home screen.
Page 31 Then press 3 and change the mode by pressing 1 or 2 (see Figure 45). Press 4 several times briefly to return to the home screen. Figure 45 Menu 05 - Mode Stand-By - Stand by mode for turning the automatic boiler operation on and off •...
Page 32 Then press 3 (set) and change the mode by pressing 1 or 2 (Figure 47). Go back to the home screen by pressing 4 several times briefly. Figure 47 Menu 06 - Mode Buzzer - When a malfunction occurs and the alarm goes off, the boiler sounds it if this mode is •...
Page 33 Menu 07 - Load Initial – Turning on the pellet feeder • This option should be activated at the first commissioning or when there is no pellet in the tank, in which case the NO PELLET message is shown on the display and the alarm goes off. At the first commissioning, when the feeder is completely empty, LOAD INITIAL is turned on and the feeder starts filling.
Page 34 From the home screen menu press 3 (set). Press 5 seven times. The display looks as in Figure 52. • Figure 52 Then press 3 (set) and the display looks as in Figures 54, 55, 56 and 57. Figure 53 shows the temperature and speed of exhaust gasses. Figure 53 Figure 54 shows the current boiler operating stage.
Page 35 Figure 55 shows the pellet feeding time in the given mode. Figure 55 Figure 56 shows water temperature and boiler pressure. Go back to the home screen by pressing 4 several times briefly. Figure 56 Menu 09 - Settings Technic - Setting the parameters (performed by a technician only) •...
Page 36: Alarms
Alarms AL1 - BLACKOUT - Alarm that goes off in the event of longer power outage (press and hold 4, wait until the cleaning stage is done and goes OFF and then switch on the boiler). AL2 - SMOKE PROBE – Alarm that goes off in case the gas temperature probe is damaged (please contact our technician).
Page 37: Boiler Cleaning And Maintenance
Boiler cleaning and maintenance Before cleaning any part of the boiler, always remember to check that the parts are cold and the boiler is unplugged to prevent burns and electrocution. Needs for cleaning may vary depending on how often the boiler is used . Cleaning the heat Exchangers (lever on the right side of the boiler) The cleaning should be done at least once in 3 days by pulling the lever back and forth several times.
Page 38 Cleaning the ash pan Ash formed in the pellet burning process is filling up the ash pan. The tank should be emptied once in 5-10 days, depending on the use of pellets (Figures 3 and 4). Note: When putting back the ash pan lid, twist the two Bakelite nuts on the ash pan carefully to the end for better sealing.
Page 39 MAJOR CLEANING OF THE HEAT EXCHANGERS The cleaning is done as part of annual service. The first major cleaning of the heat exchangers is done by a technician authorized by Kepo. CLEANING THE FLUE PIPES The cleaning is done as part of annual service. In the case of need and depending on the amount and quality of used pellets, the flue pipes may be cleaned once during the heating season.
Page 40: Frequently Asked Questions
Where are Kepo pellet boilers manufactured? The Kepo pellet boilers are made in our company based in Kosjerić, Serbia. The boilers are made of boiler tin plate produced by Železara Smederevo. Accessories are imported from Italy, Great Britain and Switzerland.
Page 41 Do I need a chimney? It is necessary to connect the boiler to an insulated chimney, 3m minimum height and ø130mm minimum diameter. In its production program, Kepo has mountable, insulated inox chimneys. Contact us for further information on the chimneys.
Page 44: Warranty Statement
Warranty statement Warranty on the boiler and all its electric parts is 25 months from the date of the warranty certification and the first commissioning . Warranty on the water part of the boiler is 5 years from the date of the warranty certification and the first commissioning, if a three-way thermostatic valve with a 40°-70°C thermostat is installed with the boiler (see picture).
Page 45 2. Costs of emergency servicing caused by improper use or not adhering to the instructions shall be borne by the user 3. The user is obliged to use the original boiler spare parts only, recommended by a Kepo LLC-authorized technician...

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