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Summary of Contents for Fondital KR 55
- Page 1 IST 03 C 351 - 01 TAHITI CONDENSING KR 55 - KR 85 INSTALLATION USE AND MAINTENANCE...
- Page 2 Dear Customer, Thank you for choosing and buying one of our boilers. Please read these instructions carefully. They will enable you to install, operate, and service the appliance properly. Any maintenance and repairs must be carried out by fully qualified engineers who carry the appropriate competency for this equipment.
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Page 3: General Information For Fitters, Maintenance Technician And User
General information for fitters, maintenance technicians and users This INSTRUCTION MANUAL, which is an integral and indispensable part of the product, must be handed over to the user by the installer and must be kept in a safe place for future reference. The manual must accompany the boiler should it be sold or its possession transferred. Following to the boiler installation, the fitter is to advise the user about boiler operation and its safety devices. -
Page 4: Table Of Contents
24 3.2.6.1. Configuration of air intake and flue gas discharge pipes page 25 3.2.6.2. Air intake and flue gas discharge configuration – model KR 55 page 26 3.2.6.3. Air intake and flue gas discharge configuration – model KR 85 page 26 3.2.7. - Page 5 21A - Wiring diagram for KR 55 page 34 pic. 21B - Wiring diagram for KR 85 page 35 pic. 22 - Adaptation to other gas types for KR 55 page 37 pic. 23 - Adaptation to other gas types for KR 85 page 37 pic.
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Page 6: User Instructions
User instructions 1.1. Control panel pic. 1 1. Liquid crystal display (LCD) The LCD displays the boiler status and operating data (pic. 2). 2. Boiler function selector With the selector on RESET , the boiler restarts after activation of the burner shutdown device (lockout). With the selector on OFF, the boiler is in stand-by mode, with the heating and hot water functions disabled. -
Page 7: Lcd
1.2. pic. 2 a. DHW indicator This indicator only activates if the boiler is connected to a separate water heater. This comes on when the boiler is in DHW mode. It flashes when the DHW temperature is being regulated via regulator 3 (pic. 1). b. -
Page 8: Boiler Status - Message Display
1.3. Boiler status – Message display Normal operation Boiler selector on OFF Boiler selector on ANTI-FREEZE Boiler selector on SUMMER or WINTER No function active The flow water temperature is displayed Boiler selector on SUMMER or WINTER DHW system enabled (*) The flow water temperature is displayed Boiler selector on WINTER CH function active... -
Page 9: Operating The Boiler
1.4. Operating the boiler 1.4.1. Switching on the boiler The following procedure is to be implemented only after the boiler has been installed and commissioned by a qualified fitter. - Open the gas stop cock. - Turn ON the master switch external to the boiler; the LCD shows and indicates the active function (see Table 1). - Select boiler operation mode via selector 2 (pic. -
Page 10: Anti-Freeze Function
Regulating the DHW temperature If the water heater has an NTC probe (10 kΩ @ β=3435; check the water heater technical data), the temperature setting range is 35-65°C (from the fully anticlockwise to the fully clockwise position on knob 3). During temperature setting, the DHW symbol flashes on the display and the DHW temperature setting is displayed. -
Page 11: Operation With An External Probe (Optional)
IMPORTANT Once the remote control has been installed, turn selector 2 on the boiler (pic. 1) to WINTER. CH and DHW functions can be enabled and disabled via the remote control. Correct operation of the boiler and remote control are NOT guaranteed if selector 2 on the boiler is left on a position other than WINTER. Selector 2 on WINTER Only original remote controls supplied by the manufacturer must be used. -
Page 12: Boiler Lockout
1.5. Boiler lockout The boiler locks out down automatically if a malfunction occurs. Refer to Tables 1 and 2 to identify the boiler operating mode. Refer to Table 2 and section 6 to identify possible causes of the shutdown. The troubleshooting section is at the end of this manual. Below is a list of possible causes of the shutdown and the procedure to follow in each case. -
Page 13: Lockout For Fan Malfunction
1.5.5. Lockout for fan malfunction Fan operation is constantly monitored and in case of a malfunction it goes off; the boiler lockout symbol displayed and code E17 flashes. This mode is maintained until the fan recovers normal working parameters. If the boiler should not start and remain in this mode, contact a Service Centre or a qualified service engineer. 1.5.6. -
Page 14: Technical Features And Dimensions
The boiler is equipped with a fully pre-mixed gas burner. All models are equipped with electronic ignition and an ionization flame sensing device. The following models are available: KR 55: condensing boiler with sealed chamber and forced draught, supplying CH water, 55kW KR 85: condensing boiler with sealed chamber and forced draught, supplying CH water, 85kW The boilers meet applicable laws in force in the country of destination, which is stated on the rating plate. -
Page 15: Dimensions Of The Kr 55
2.2. Dimensions of the KR 55 Aspirazione aria Aspirazione aria Ø 80 mm Ø 100/60 mm scarico fumi Ø 80 mm air intake air intake/flue gas outlet Ø 100/60 mm 43 56 View from below View from above Condensate drain CH system flow (1’’) - Page 16 2.3. Dimensions of the KR 85 Ø 100 mm Scarico fumi Aspirazione aria Ø 80 mm flue gas outlet Ø 100 mm Ø 80 mm air intake 43 56 View from below View from above Condensate drain CH system flow (1’’) Water mains intake (1/2’’) Filling tap Gas inlet (3/4’’)
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Page 17: Main Components For The Kr 55
2.4. Main components for the KR 55 1 Control panel 12 Gas valve 2 Heat exchanger 13 Safety thermostat 3 Flue gas fan 14 Circulating pump 4 Air separator 15 Deaerator on air separator 5 Deaerator on heat exchanger 16 Ignition electrode... - Page 18 2.5. Main components for the KR 85 1 Control panel 11 Differential pressure switch 2 Heat exchanger 12 Gas valve 3 Flue gas fan 13 Safety thermostat 4 Air separator 14 Circulating pump 5 Deaerator on heat exchanger 15 Deaertator on air separator 6 CH temperature probe 16 Ignition electrode 7 Flue gas thermostat...
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Page 19: Operating Data
53.5 15.7 58.8 8.8 ÷ 9.1 Propane Gas G31 55.0 14.1 53.5 15.7 58.8 9.8 ÷ 10.1 Table 3 – Calibration data for KR 55 KR 85 Max. CH output Gas mains Diaphragm Flue gas output Fuel type input (50-30°C) -
Page 20: Pumping Head
2.8. Pumping head KR 55 Flow rate (l/h) V1 Pump speed I (min) With flow rates less than 1600 l/h correct boiler operation is not guaranteed. If V2 Pump speed II lesser flow rates are required it is necessary to install an hydraulic separator. -
Page 21: Instructions For The Fitter
Instructions for the fitter 3.1. Installation standards This is an II2H3P category boiler and it must be installed in compliance with the laws and regulations in force in the country of installation. 3.2. Installation Accessories and spare parts for installation and service procedures must be supplied by the Manufacturer. Correct boiler performance cannot be guaranteed if non-original accessories and spare parts are used. - Page 22 Coupling Coupling Ø M = flow 1“ G = gas 3/4“ F = cold water 1/2“ R = return 1“ pic. 12...
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Page 23: Installing The Boiler
3.2.4. Installing the boiler The whole system must be cleaned thoroughly before the boiler is connected to the pipes in the central heating system. Before starting up a NEW system, clean it thoroughly to remove any metal residues from the construction or welding process, and any oil or grease present as this could get into the boiler and damage it. -
Page 24: Air Intake And Flue Gas Discharge System
3.2.6. Air intake and flue gas discharge system Flue gas discharge into the atmosphere and air intake and flue gas discharge systems must comply with the applicable rules and regulations, which are intended as an integral part of this handbook. The boiler is fitted with safety devices to control emission of products of combustion. -
Page 25: Configuration Of Air Intake And Flue Gas Discharge Pipes
3.2.6.1. Configuration of air intake and flue gas discharge pipes Boilers are approved for installation according to the following types: KR 55: B23, B53, C13, C33, C43, C53, C83 KR 85: B23, B53, C43, C53, C83 Type B23 Boiler designed for connection to a flue or a combustion product discharge device outside the boiler room. -
Page 26: Air Intake And Flue Gas Discharge Configuration - Model Kr 55
3.2.6.2. Air intake and flue gas discharge configuration – model KR 55 These values refer to air intake and flue gas discharge systems comprised of original smooth and rigid pipes supplied by the Manufacturer. Cap and seal for the air... -
Page 27: Testing Combustion Efficiency
(pic. 15). corresponding to the maximum setting The chimney-sweep function operates for 15 minutes. To exit chimney-sweep mode, turn selector 2 to any position other than WINTER and then to the desired setting. KR 85 KR 55 pic. 14 pic. 15... -
Page 28: 3.2.7.2. Measurement Procedure
3.2.7.2. Measurement procedure KR 55 The boiler is equipped with a tower allowing for connection of the air intake and flue gas discharge pipes (figs. 16 and 17). The tower comes with two openings for direct access to the combustion air and flue gas pipes (pic. 17). -
Page 29: Plumbing Connections
3.2.9. Plumbing connections Prior to installing the boiler, the plumbing system nust be cleaned thoroughly to remove impurities from the components, which could damage the pump and heat exchanger (§ 3.2.4.). CH pipes The flow and return pipes in the CH system must be connected to their respective 1” fittings (F and R) on the boiler (figs. 6 and 7). When calculating the cross-section of CH pipes, it is important to take into account load losses due to the length of the pipe, the CH terminals and the configuration of the system. -
Page 30: Selecting The Ch Operating Range
3.2.11. Selecting the CH operating range The setting range for the CH water temperature depends on the operating range selected. - standard range: 20-78°C (from full anticlockwise to full clockwise position on knob 4); - reduced range: 20-45°C (from full anticlockwise to full clockwise position on knob 4). To select the operating range, turn the thermoregulation trimmer ( pic. -
Page 31: Connecting To The External Probe (Optional) And Sliding Temperature Operation
Default values for Default values for Parameter Limit value TSP0 = 4 KR 55 TSP0 = 5 KR 85 TSP0 4 - 5 Boiler model and table of default values TSP1 120 ÷... - Page 32 In addition, the position of the thermoregulation trimmer determines the CH operating range, according to the following values: TSP5 parameter values which select the reduced range 0 ÷ 75 Coefficients corresponding to thermoregulation curves 0.0 ÷ 0.8 TSP5 parameter values which select the standard range 76 ÷...
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Page 33: Filling The System
3.3. Filling the system When all the boiler connections have been completed, the CH system can be filled with water. This must be done with caution, following these steps in sequence. • Open the air relief valve on all the radiators and check the efficiency of the automatic boiler valve. •... -
Page 34: Wiring Diagrams
3.5. Wiring diagrams pic. 21 A... - Page 35 pic. 21 B...
- Page 36 Key to symbols F2PIA: Mono-thermal/ Aqua Premium 0SONDAES01 external probe thermoregulation curve regulation boiler 10K Ohm B=3977 (optional) boiler chimney-sweep selection button F3RIS: CH-only boiler probe to be connected to the separate water heater with probe F4BOL: boiler with water heater boiler board (remove R1) F5MIC:...
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Page 37: Adapting To Other Gases And Regulating The Burner
C (pic. 24 • Regulate the CO the order, which is shown on the packaging and on the for KR 55 and pic. 25 for KR 85) and make sure it is within the limits of boiler rating plate. Table 12;... -
Page 38: Commissioning The Boiler
Commissioning the boiler 4.1. Preliminary checks Before commissioning the boiler, it is advisable to check that • the installation complies with the current regulations; • the flue gas exhaust pipe and terminal are installed as instructed. When the boiler is running, no combustion gas must leak from any of the seals;... -
Page 39: Maintenance
Maintenance Maintenance and repairs must be carried out by a fully qualified technician. The user is strongly advised to have the boiler serviced and repaired by a fully qualified and authorised Service Centre. Correct maintenance of the boiler will allow it to work efficiently, without harming the environment, and in complete safety. 5.1. -
Page 40: Troubleshooting
Troubleshooting BOILER STATUS PROBLEM POSSIBLE CAUSE SOLUTION Check gas pressure. Check that the gas valve opens or Gas supply failure whether any system safety valves have cut in Gas valve disconnected Reconnect it Burner does not ignite Gas valve faulty Replace it PCB faulty Replace it... - Page 41 BOILER STATUS PROBLEM POSSIBLE CAUSE SOLUTION The boiler has locked out. The Water heater probe disconnected Reconnect it symbol is displayed and code E12 flashes. Water heater probe not working Operation is resumed automatically when the cause of Water heater probe faulty Replace it shutdown has been removed.
- Page 44 Tel. +39 0365 878.31 - Fax +39 0365 878.576 e mail: fondital@fondital.it - www.fondital.it The manufacturer reserves the right to modify the products as it deems necessary and useful, without affecting their basic features. Uff. Pubblicità Fondital IST 03 C 351 - 01 Ottobre 2009 (10/2009)
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