Fondital KC 12 Installation, Use And Maintenance Manual

Text of Fondital KC 12 User Guide:

• Fondital KC 12, 74 Instructions for the installer 3.18.7 Forced circulation solar system with CH only boiler wiring diagram Parameter setting P03 : 3 P17 : 2 P18 : 1 M Ambient thermostat Terminals 1 - 2 Terminals 24 - 25 Terminals 7 - 8 Terminals 11 - 12 Terminals 5 - 6 Boiler water heater probe Solar water heater temperature probe Terminals 9 - 10 External probe Terminals 21-22-23 Domestic water system Fig. 30 Forced circulation solar system with CH only boiler wiring diagram Fig. 31 Multifunction relay connection diagram

• 11 Instructions for the user 1.3 Selecting the operating mode Whenever key is pressed, the "SUMMER”, “WINTER” , “CH ONLY”, “OFF” modes are enabled in sequence. At this stage, all buttons are enabled. 1. "OFF" operating status When the "OFF" mode is enabled, no function is active. 2. "SUMMER" operating status When the "SUM

• Fondital KC 12, 52 Instructions for the installer 3.7.2 Measurement procedure The boiler is equipped with a tower allowing for air intake/flue gas venting pipe connection (see Fig. 15 Plugs position and Fig. 16 Hole position). The tower is designed with two pre-arranged openings directly accessing air and flue gas ducts (see Fig. 15 Plugs position). Remove caps A and B from the pre-arranged openings on the tower, before starting combustion checking procedure (see. Fig. 15 Plugs position). In order to verify combustion efficiency the following measurements must be implemented: �

• Fondital KC 12, 3 General notes for installing and maintenance technicians, and users This instruction manual is an integral and essential part of the product. It shall be supplied by the installer to the user who shall keep it carefully to consult it whenever necessary. This document shall be supplied together with the equipment in case the latter is sold or transferred to others. DANGER This equipment has been manufactured to be connected to a room heating system and to a DHW distribution system. Any other use shall b

• 21 Technical features and dimensions 2. Technical features and dimensions 2.1 Technical features The boiler is equipped with an integrated gas atmospheric burner. The following models are available: • KC condensing boiler with sealed chamber and forced draught, supplying CH water and domestic hot water. • KR condensing boiler with sealed chamber and forced draught, supplying CH w

• Fondital KC 12, 19 Instructions for the user 1.9.5 Alarm due to temperature probe malfunction The following fault codes are shown on the display in the event of burner shut-down due to a temperature probe fault: • E05 for the CH probe: in this case the boiler does not work. • E06 for the DHW probe (KC model, only); in this case, the boiler works in central heating mode only, and the DHW function is disabled. • E12 for the water heater probe (KR/KRB models only); in this case, the boiler works in central heating mode only, and the water hjeater heating function is disabled. • E15 for the return probe; iIn this case the boiler does not work. WARNING In any case, contact

• 61 Instructions for the installer Parameter Settable values Default values Notes P18 - TSP18 Solar plant type choice 0 ÷ 1 0 0 = solar valve; 1 = solar pump P19 - TSP19 Water heater set-point setting 10 ÷ 90 °C 60 °C only with P18 = 1 P20 - TSP20 ∆T ON (diff. for solar pump switch-on) 1 ÷ 30 °C 6 °C P21 - TSP21 ∆T OFF (diff. for solar pump shut-down) 1 ÷ 30 °C

• Fondital KC 12, 27 Technical features and dimensions KR model 8 M 7 6 5 4 3 2 1 21 9 10 11 12 13 14 16 19 G 20 17 18 15 S F R Fig. 7 Hydraulic diagram KR 1. Condensate trap 2. Modulating gas valve 3. Flow temperature twin probe 4. Modulating fan 5. Main condensing heat exchanger 6. Air-purging device 7. Air intake duct 8. Flue gas venting duct 9. Flue gas analysis ports 10. Flue gas thermostat on venting duct 11. Flue gas temperature probe on exchanger 12. Ignition/detection electrode 13. Expansion vessel 14. Fan check probe 15. Return temperature probe 16. 3-bar safety valve 17. Pressure sensor 18. Air-purging devic

• Fondital KC 12, 53 Instructions for the installer A Fig. 17 Connection to gas mains 3.9 Hydraulic connections 3.9.1 Central heating Prior to installing the boiler, the hydraulic system is to be cleaned in order to remove impurities; they could be present in system components and damage the pump and the heat exchanger. The CH outlet and return pipes must be connected to the respective 3/4” connectors M and R on the boiler (see Fig. 9 Paper template). When calculating the cross section of CH system pipes, bear in mind load losses induced by radiators, thermostatic valves, radiator gate valv

• Fondital KC 12, 58 Instructions for the installer The figure shows the curves for a fictitious ambient temperature of 20°C.Parameter P10 allows selecting the curve value shown (see Fig. 19 Thermoregulation curves). If fictitious ambient temperature value is edited on boiler display, the curves shift up or down, respectively, by the same amount. With a fictitious ambient temperature setting of 20°C, for example, if you select the curve corresponding to parameter 1 and the outdoor temperature is - 4°C, the CH flow temperature will be 50°C. 100 90 80 70 60 50 40

• Fondital KC 12, 84 Maintenance 5. Maintenance WARNING Any maintenance (and repair) work must only be carried out by qualified personnel. The user is strongly advised to have the boiler serviced and repaired by a qualified Service Centre. Appropriate boiler maintenance ensures efficient operation, environment preservation, and safety for people, animals and objects. The boiler must be serviced at least once every year. WARNING Disconnect electric power supply before starting any maintenance procedure, involving replacement of components and/or cleaning inside parts of boiler. 5.1 Ma

• 2 Dear Sirs, thank You for choosing and buying one of our products. Please read these instructions carefully in order to properly install, operate, and maintain the product. WARNING • We inform users that: • Boilers shall be installed by an authorised company under the requirements set forth by the prevailing rules, in full compliance with the prevailing regu

• Fondital KC 12, 71 Instructions for the installer 3.18.6 Wiring diagram for natural circulation solar system with combi boiler Parameter setting P03 : 1 P17 : 2 P18 : 0 M Ambient thermostat Terminals 1 - 2 Terminals 5 - 6 SOLAR DEVIATING VALVE Solar water heater temperature probe Terminals 9 - 10 External probe Terminals 21 - 22 - 23 Domestic water system Fig. 27 Wiring diagram for natural circulation solar system with combi boiler Single effect valveDouble effect valve Fig. 28 Multifunction relay connecting diagram (Z = neutral; Y = to boiler; Z = to collector)

• Fondital KC 12, 9 Instructions for the user Ref. Symbol Steady on Flashing 1 Percentage indication Not used 2 Indication of "parameter" inside the parameter menu Not used 3 Displaying of the number of parameters, or of the system pressure, or of the burner power percentage Not used 4 Indication of system pressure measurement unit Not used 5 Displaying of temperature, parameter values and faults. Not used 6 Indication of the centigrade degrees Not used 7 A DHW request is present Displaying of the DHW temperature set-point 8 A heating request is present Displaying of the heating temperature set-point 9 Sym

• Fondital KC 12, 10 Instructions for the user 1.2 Interpreting boiler status from display indications 1.2.1 Normal operation Boiler switch in OFF mode. Boiler switch in SUMMER or WINTER or CH ONLY mode No active function. The flow temperature and the system pressure are displayed. SUMMER WINTER CENTRAL HEATING ONLY Boiler switch in SUMMER or WINTER mode DHW function enabled. The domestic hot water temperature and the modulation percentage are displayed. SUMMER WINTER Boiler switch in WINTER or CH ONLY mode CH

• Fondital KC 12, 37 Technical features and dimensions Item Symbol Value Unit Item Symbol Value Unit Rated heat output P rated 12 kW Seasonal space heating energy efficiency η S 90 % At rated heat output and high- temperature regime (*) P 4 11,7 kW At rated heat output and high- temperature regime (*) η 4 86,2 % At 30 % of rated heat output and low- temperature regime (**) P 1 3,7 kW At 30 % of rated heat output and low- temperature regime (**) η 1 95,5 % At full load el max 0,020 kW Standby heat loss P stby 0,064 kW At part load el min 0,013 kW Ignition burner power consumption P ign 0,000 kW In standby mode P SB 0,002 kW Annual energy consumption Q HE 21 GJ Emissions of nitrogen oxides

• Fondital KC 12, 31 Technical features and dimensions Description um KR/KRB 12 KR/KRB 24 KR/KRB 28 KR/KRB 32 CH nominal heat input kW 12.0 23.7 26.4 30.4 Minimum heat input kW 2.0 3.0 3.3 4.2 Maximum heat output (80-60°C) - CH kW 11.7 22.9 25.4 29.4 Minimum heat output (80-60°C) - CH kW 1.8 2.7 3.0 3.9 Maximum heat output (50-30°C) - CH kW 12.6 24.9 27.9 32.3 Minimum heat output (50-30°C) - CH kW 2.1 3.22 3.58 4.4 Minimum CH system pressure bar 0.5 0.5 0.5 0.5 Maximum CH system pressure bar 3.0 3.0 3.0 3.0 Electric power supply – voltage / frequency V - Hz 230 -50 230 -50 230 -50 230 -50 Power mains supply fuse A 3.15 3.15 3

• Fondital KC 12, 32 Technical features and dimensions Description um Max. output Min. output 30% load Casing heat loss with burner on % 0.26 7.78 - Casing heat loss with burner off % 0.55 Flue system heat loss with burner on % 2.64 1.92 - Flue system mass capacity g/s 8.25 0.89 - Flue temp. – air temp. °C 57.9 34.5 - Heat efficiency (80-60°C) % 97.1 90.3 - Heat efficiency (50-30°C) % 105.1 105.0 - 30% heat output efficiency rating % - - 106.0 NOx emission class - 5 Tab. 8 KC-KR-KRB 12 combustion data Description um Max. output Min. output 30% load Casing heat loss with burner on % 0.97 6.49 - Casing heat loss with burner off % 0.28

• Fondital KC 12, 18 Instructions for the user 1.9.1 Burner shut-down Fault code E01 is displayed flashing on the display in the event of burner shut-down due to missing flame. If this happens, proceed as follows: • check that the gas cock is open and light a kitchen gas ring for example to check the gas supply; • once having checked if the fuel is available, press the button to restore burner operation: if, after two starting attempts, the boiler still fails to start and enters the shut-down mode again, contact a service centre or qualified personnel for maintenance. WARNING If the burner shuts down fr

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