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Related Manuals for Nova Florida fondital Mono-thermal MINORCA-NIBIR CTFS 9
Summary of Contents for Nova Florida fondital Mono-thermal MINORCA-NIBIR CTFS 9
- Page 1 DIDACTIC MANUAL Wall-hung FAMILY: atmospheric boilers Instantaneous type GROUP: and forced draught Minorca-Nibir MODELS: Mono-thermal For indoor installation VERSIONS: AST 14 C 292/00 PART NO.: ______________________________________________ Edition, June 2016...
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Page 2: Table Of Contents
Contents CHAPTER 01 TECHNICAL CHARACTERISTICS 1.1 – Models 1.2 – Overall Dimensions 1.3 – Technical Specifications ___________________Page CHAPTER 02 CONTROL PANEL AND DIAGNOSTICS 2.1 – User's Interface 2.2 – LCD 2.3 – Boiler Status and Fault Codes ___________________Page CHAPTER 03 HYDRAULIC DIAGRAMS AND COMPONENTS 3.1 –... - Page 3 AST 14 C 292/00...
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Page 4: Technical Characteristics
SECT. 1 TECHNICAL CHARACTERISTICS 1.1 MODELS Mono-thermal MINORCA-NIBIR CTFS 9 Mono-thermal MINORCA-NIBIR CTFS 11 Mono-thermal MINORCA-NIBIR CTFS 13 Mono-thermal MINORCA-NIBIR CTFS 15 Mono-thermal MINORCA-NIBIR CTFS 18 ABBREVIATION KEY combined TFS: forced draught, sealed chamber MAIN CHARACTERISTICS Mono-thermal MINORCA-NIBIR CTFS: atmospheric boiler for indoor installation, combined instantaneous, with production of domestic hot water + heating, forced draught, sealed chamber, mono-thermal with plate exchanger;... - Page 5 CTFS VERSION AST 14 C 292/00...
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Page 6: Installation Template
INSTALLATION TEMPLATE AST 14 C 292/00... -
Page 7: Technical Specifications
1.3 TECHNICAL SPECIFICATIONS General Characteristics CTFS 9 CTFS 11 CTFS 13 CTFS15 CTFS 18 Operating parameters Device category II2HM3+ (G20 - G230 - G30/G31) Burner nozzles CH circuit min. pressure CH circuit max. pressure DHW circuit min. pressure DHW circuit max. pressure DHW specific flow rate (∆t 30°C) l/min Air pressure switch ON pressure... - Page 8 Design data and flue sizing CTFS 9 Load Pmax. Pmin. at 30 % Casing heat loss 1.59 2.55 Flue system heat loss with burner on 9.05 11.85 Flue (natural gas) mass flow 11.5 12.1 Flue gas temp. – air temp. °C 101.3 63.9...
- Page 9 CTFS 18 Load Pmax. Pmin. at 30 % Casing heat loss 1.55 2.55 Flue system heat loss with burner on 5.25 11.85 Flue (natural gas) mass flow 11.5 12.1 Flue gas temp. – air temp. °C 101.3 63.9 value (natural gas - butane gas - propane) 7.0/8.1 –...
- Page 10 CTFS 15 Heat Burner Burner Heat output Supply Diameter capacit pressure pressure MIN-MAX pressure Nozzles MIN-MAX MAX (DHW) (kW) (kW) (mbar) (mm) (mbar) (mbar) Natural gas 1.20 1.5 – 7.6 11.1 16.4 7.0 – 15.1 (CH) Butane gas (CH) 7.0 – 18.6 0.70 3.9 –...
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Page 11: User's Interface
SECT. 2 CONTROL PANEL AND DIAGNOSTICS 2.1 USER'S INTERFACE 1. Set domestic hot water temperature These keys are used to set the domestic hot water temperature within a range from 35°C to 57°C. 2. LCD Display The LCD shows the boiler status and operation information (see the following paragraph). 3. -
Page 12: Lcd
2.2 LCD 1. Parameter indicator It turns on when entering the TECHNICAL parameter programming mode. 2. DHW indicator It turns steady on when "DHW" function is enabled. It flashes when adjusting the domestic hot water temperature with 1 key (see previous paragraph) or when a "DHW"... -
Page 13: Boiler Status And Fault Codes
2.3 BOILER STATUS AND FAULT CODES Normal operation Boiler in STANDBY mode. Only anti-freeze function is enabled. Boiler in SUMMER mode. No active function. The flow water temperature is displayed Boiler in SUMMER or WINTER mode. No active function. The flow water temperature is displayed Boiler in CENTRAL HEATING ONLY mode. - Page 14 Malfunction, errors to be reset by user and self-resettable faults The display shows the failure based on the corresponding error code, with possible reset indication on the display (see following table). For error codes after E09, the display shows alternatively the symbol E and the error code. In case of faults identified with (r), the user can reset the operation by pressing the proper reset key, otherwise the fault is self- resettable (a): Boiler shut-down due to missing flame...
- Page 15 Opentherm communication error Ambient probe fault CTFS/CTN identification error Gas/fan operator relay feedback error Gas valve modulation coil error (a) System error: mains voltage too low, or microprocessor fault High flow derivative error Max. number of reset attempts from remote control reached NOTE: The board is able to count and store the boiler's latest five faults (both resettable and self- resettable).
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Page 16: Hydraulic Diagram
SECT. 3 HYDRAULIC DIAGRAMS AND COMPONENTS 3.1 HYDRAULIC DIAGRAM CTFS 1. Automatic by-pass 17. CH return temperature probe 2. DHW temperature probe 18. 3-bar safety valve 3. Motorised 3-way valve 19. Discharge cock 4. Modulation gas valve 20. Minimum pressure switch 5. -
Page 17: Motorised Three-Way Valve
3.2 HYDRAULIC UNIT DHW FLOW SWITCH The domestic hot water flow switch features a magnet switch whose position determines the minimum quantity of domestic hot water necessary to start the boiler (3 l/min ON and 1 l/min OFF). If the request of DHW does not exceed such value the micro-switch does not close the contact and inhibits the boiler starting to avoid the boiling risk. - Page 18 The secondary exchanger is fixed by the three-way valve and another unit made of thermosetting polymers connecting the cold water inlet pipe to the rest of the hydraulic system. The plate exchanger consists of 12 plates made of stainless steel and the high production of domestic hot water is guaranteed by the horizontal expansion of the exchanger itself.
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Page 19: Hydraulic Unit
Hydraulic Unit: FLOW RETURN Safety valve 3 bar Expansion tank Low water connection pressure switch non- By-pass pipe with return valve D.H. COLD WATER In this boiler model, pump speed is at fixed point and not changeable. Please find below the graph containing the available head to the system: Circulation pump characteristic:... -
Page 20: Heat Exchangers
3.3 HEAT EXCHANGERS PRIMARY EXCHANGER It is made up of a set of aluminium pipes, connected to each other in a way to create a "coil". The finning improves the efficiency of the heat exchange between the water flowing inside, the heat developed by the burner flame and the hot combustion flue gases. -
Page 21: Expansion Tank
3.4 EXPANSION TANK An increase in heating water temperature inside a closed circuit corresponds to an increase in the water volume. As no further space is available, the increase will affect the pressure and not the volume. If pressure value exceeds safety valve triggering point, this latter will open and discharge water from the system. -
Page 22: Gas Valve
GAS VALVE The boiler is approved for operating with gas valve, model SIT 845: Gas inlet pressure ELECTRICAL CONNECTIONS SOLENOID VALVES EV1 and EV2 measurement GAS IN Gas outlet pressure measurement GAS OUT Gas valve characteristics EV1 and EV2 safety coil operating power supply 230 VAC 50 Hz EV1 operating current 40 mA... -
Page 23: Gas Valve Setting
SECT. 4 GAS SETTING AND PARAMETERS 4.1 GAS VALVE SETTING To set the gas valve, proceed as follows: check supply static pressure by means of the inlet pressure measurement point E referring to the "setting" table on pages 9-10, according to the type of fuel used (pressure values lower than requested do not guarantee proper boiler operation);... -
Page 24: Chimney Sweep Function
4.2 CHIMNEY SWEEP FUNCTION The boiler features a chimney sweep function which must be used to measure combustion efficiency during operation and to adjust the burner. This function can be enabled only in the HEATING + DOMESTIC HOT WATER operating mode. -
Page 25: Gas Conversion
4.3 GAS CONVERSION Boilers are manufactured to run on the type of gas (natural gas or LPG) specifically required upon purchase order placing, and any conversion shall be made by qualified personnel. During gas conversion, proceed as follows: make sure to work with the boiler disconnected from the electric power supply; remove combustion chamber front panel;... - Page 26 TECHNICAL parameter editing If keys “reset” and “- heating” are pressed together for three seconds, you will access the parameter setting mode. Use “heating +/-” keys, to select the desired parameter: Press the operating mode key to confirm that parameter value must be edited; the adjustable wrench symbol indicates that parameter value can be edited using keys “+/- heating”: To confirm parameter value editing, press the operating mode key.
- Page 27 Timer for CH post-circulation, anti-freeze 1 to 199 s and chimney sweep function 0 = Standard 0 ÷ 1 Setting of "solar" DHW thermostats 1 = Solar Water hammer protection delay, 0 to 10 s configurable 0 to 199 s Ambient thermostat reading delay / OT 0 ÷...
- Page 28 35 ÷ 70 °C Anti-legionella function request temperature 1 ÷ 199 min. Anti-legionella function operation timer Flow temperature Return temperature DHW temperature Ambient / external temperature B = natural draught Boiler type C = forced draught Fault code Most recent boiler shut-down Fault code Second last boiler shut-down Fault code...
- Page 29 SUPER-TECHNICAL parameter editing Press "reset" and "heating + at the same time for three seconds to access: Once entered the programming mode, proceed as described in the paragraph about technical parameters. List of SUPER-TECHNICAL parameters Default Parameter Range Notes values 0 ÷...
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Page 30: Operating Logic
SECT. 5 OPERATING LOGIC 5.1 MAIN GENERAL CHARACTERISTICS Function priority; Boiler type selection; Automatic flame control; Ignition with ramp at pre-set power; DHW priority; DHW modulation; Ambient thermostat; Adjustable CH maximum output; Temperature range pre-selection; Heating modulation; Ambient thermostat timer (antifast); Modulation with external probe or ambient probe;... - Page 31 BOILER TYPE SELECTION Natural gas or LPG configuration This selection is obtained by setting technical parameter P0 (see previous section) to select the “current-output” curve to be applied to the gas proportional modulation coil in order to achieve the correct modulation. CTFS (forced draught) or CTN (natural draught) auto-configuration The type of boiler is automatically recognised each time the board is supplied with power.
- Page 32 AUTOMATIC FLAME CONTROL The “flame control” device is always enabled and constantly performs self-check functions. Upon an operation request, the fan is supplied with power after checking that the air pressure switch (C type boiler) is in rest condition. As soon as the air pressure switch or the flue gas thermostat (type B boiler) enabling is given, the flame control device starts measuring the waiting time TW (1.5 seconds);...
- Page 33 IGNITION WITH RAMP AT PRE-SET POWER Boiler ignition mode can be selected with technical parameter P2 (default setting is 0): P2=0 Ignition with ramp Flame Upon every operation request entailing burner propagation 2 sec. Only TFS ignition, burner will be ignited with a current ramp to modulation coil changing from the initial to the final value within a safety time TS (10 seconds).
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Page 34: Dhw Priority
DHW PRIORITY With boiler running in “DHW” or “DHW + CH” mode, DHW flow switch electric contact closing will originate a DHW operation request, thus starting modulation. Such request can be delayed in order to avoid events deriving from the water hammer through parameter P7 (max. - Page 35 During DHW modulation, once the min. gas flow rate is reached and with the supplied output above the required one, the burner is switched off when DHW temperature reaches the + 5°C set-point value. After burner switching off, whilst the operation request is still present, burner will be ignited again when the temperature falls below the usual + 3°C set- point.
- Page 36 P21 = 2: external probe. The heat request depends on both the external probe presence and on the TA ambient thermostat or OT remote control, whose inputs are logically connected in series. Therefore, the CH function with external probe is enabled only if there is a request from TA or OT;...
- Page 37 CH MODULATION Upon closing of ambient thermostat electric contact, if the water temperature read by the flow NTC probe is lower than the set temperature value, the burner ignition sequence is started with the automatic flame control enabling. At the end of the ignition sequence, gas flow rate goes to its minimum value and then reaches the value set by technical parameter P1 (maximum heating output) with a ramp duration equal to the heating output rising ramp timer which can be set by technical parameter P4 (default - four minutes).
- Page 38 Heating modulation temperature - standard range (P10≥1): CH temperature setting range: 35÷78°C CH thermostat triggering temperature OFF = set-point + 5° C CH thermostat triggering temperature ON = set-point + 0° C Heating thermostat timer (antifast) - can be set through P3: 0÷10 min, default 4 min with >...
- Page 39 The algorithm used for this calculation is: ≥ T + ∆T If T +∆T , then T set-point return flow set return If T < T +∆T -1°C, then T set-point return flow set set-point where, : flow temperature set from boiler or from remote; set-point : temperature value read by the return probe return...
- Page 40 In case of probe not correctly set or installed in an improper position, the ambient probe reading can be corrected with parameter P17 . In this case the ambient (from -5°C to +5°C) probe value is the result of the temperature detected after having added or subtracted the correction parameter value previously indicated.
- Page 41 THERMOREGULATION WITH EXTERNAL PROBE (with P21=2) The external temperature probe to be connected will automatically modify the heating flow water temperature according to: - the external temperature detected; - the selected thermoregulation curve through technical parameter P10; - the fictitious ambient temperature set through“heating +/- ”...
- Page 42 Warning, the curves given in the diagram refer to a request of a “fictitious ambient temperature” of 20°C. In case of different fictitious temperature, all curves will be shifted in a parallel translation with subsequent increase or decrease of the calculated flow temperature.
- Page 43 Checking the thermoregulation curve setting It takes time to choose the best curve. Consider the following suggestions: • If upon external temperature decrease the ambient temperature increases, it is necessary to set a curve with a lower slope, i.e. a lower curve; •...
- Page 44 A communication loss will entail the continuous attempt to restore it but, after 1 minute, the board will resume operation in local mode until connection is restored. In this case the system temporarily ignores the heating request that could be generated by a possible contact connected on opentherm.
- Page 45 Return probe fault (E15): no function is interrupted. Heating requests are accepted without performing the “exchanger boiling control” function. If the “exchanger boiler control” function is disabled (P13=0), return probe fault will not be displayed. Plate DHW probe (E06) fault: with a request in DHW mode, the burner is not activated (if it was ON it is switched OFF) and the pump is activated with three-way valve in DHW position as long as the request persists.
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Page 46: Anti-Freeze Function
POST-VENTILATION FUNCTION. Upon burner switching off, the fan is still supplied with power for 10 seconds(time can be adjusted through super-technical parameter P0 ), regardless of boiler operating mode. Moreover, a post-ventilation cycle is started when the temperature read by the flow probe reaches 95°C and is stopped when the temperature falls below 90°C. - Page 47 Warning, the freeze protection function does not protect the CH system but the boiler only. Summary of operation thresholds: DESCRIPTION Flow anti-freeze function 5°C 30°C (or after 15' of operation) Temperature general tolerance ± 3°C Plate DHW The DHW NTC probe measures the DHW temperature and if it falls below la temperatura di 5°C it generates an operation request in DHW freeze protection mode.
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Page 48: Safety Devices
SAFETY DEVICES Safety thermostat (E02 shut-down) The safety thermostat positioned on main exchanger is a normally closed contact. When the water temperature detected by thermostat is above 95°C, contact opens by interrupting the power supply to the gas valve, with consequent burner switching off. The safety thermostat triggering, with powered gas valve, originates boiler shut-down for “safety thermostat triggering”... - Page 49 Low water pressure switch (E04 shut-down) The water pressure switch is constantly checked. If it is open (with pressure lower than 0.5 bar), a signal of insufficient pressure (E04) is sent, the pump is immediately disabled and the operation requests are ignored. If the pressure switch contact closes, the standard operation is restored.
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Page 50: Electrical System
SECT. 6 ELECTRICAL SYSTEM 6.1 ELECTRONIC BOARD Spare part number: 6SCHEMOD34 Board characteristics Operating voltage: from 170Vac to 300 Vac Power supply frequency: 45 - 66 Hz Protection class: IP00 Protection fuse: 5x20mm 3.15AF 1.2 µA Ionisation current: Flame detection method: ionisation Type of detection phase-neutral... -
Page 51: Outer Terminal Box Electrical Connections
6.2 OUTER TERMINAL BOX ELECTRICAL CONNECTIONS All the electrical connections are carried out through a terminal box directly placed on the boiler electronic board, that can be accessed by removing the relevant protection cover. Only one control device (ambient thermostat or remote control) and only one climate sensor (external or ambient probe) can be connected to the boiler, the latter according to parameter P21 programming. -
Page 52: Wiring Diagram
6.3 WIRING DIAGRAM Key: APS: air pressure switch low water pressure switch ignition/flame detection electrode DHW flow switch MDV: electric deviating valve boiler circulation pump heating NTC probe 10kOhm at 25°C β=3435 return NTC probe 10kOhm at 25°C β=3435 DHW NTC probe 10kOhm at 25°C β=3435 gas valve heating flow safety thermostat AST 14 C 292/00... -
Page 53: 100/60 Co-Axial Air/Vent Ducts
SECT. 7 VENT DUCTS AND PIPES For intake/flue gas vent lines use only original ducts designed for the specific boiler (as per manufacturer's specifications). 7.1 100/60 CO-AXIAL AIR/VENT DUCTS Dimensions for connection of flue gas duct to co-axial pipes Type C12 Type C12 horizontal vent The minimum permissible length of horizontal coaxial pipes is 0.5 metres, including the first elbow connected to the boiler. - Page 54 Type C32 vertical vent Minimum permissible length for vertical coaxial pipes is one metre, equal to the length of the flue. Maximum permissible length for vertical coaxial pipes is 6 metres, including the chimney. For each additional 90° elbow, maximum permissible length is to be reduced by 1 metre, whereas for the 45°...
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Page 55: 80/80 Split Air/Vent Ducts
7.2 80/80 SPLIT AIR/VENT DUCTS Type C12 Type B22 – B52 - C42 – C52 – C82 AIR INTAKE Minimum permissible length of flue gas venting pipe is 0.5 metre. Each wide radius 90° air-intake duct elbow (R=D) is equivalent to a 1.5 metres long straight pipe section. - Page 56 Base splitter kit 0SDOPPIA11: Air intake stub Flue gas vent pipe stub pipe Neoprene gaskets Air diaphragm Flue gas vent diaphragm (integrated inside boiler) WARNING: the air diaphragm is supplied with the splitter kit. 80/80 split duct load loss table Part Vent Intake...
- Page 57 TABLE OF TECHNICAL FAULTS Boiler Status Malfunction Probable cause Solution Check gas pressure. Check gas supply cock Gas supply fault or gas network safety valve intervention. Burner does not ignite Gas valve is disconnected Re-connect it Gas valve is faulty Replace it The board is faulty Replace it...
- Page 58 Boiler shut-down, picture flashes: Flow probe Disconnected or short- Reconnect or replace circuited probe failure Boiler shut-down, picture flashes: DHW probe Disconnected or short- Reconnect or replace failure circuited probe Check system System insufficient pressure Check DHW flow or flow rate DHW flow switch is not switch filter working...
- Page 59 Check the Remote Boiler shut-down, picture The connection with the Control connections flashes: Remote Control is (wiring longer than 5 The boiler does not interrupted. meters must be shielded) communicate with the Remote Control Replace the Remote Remote control is faulty Control Boiler shut-down, picture flashes:...
- Page 60 Boiler shut-down, picture Pump is seized Unseize the pump flashes: Flow temperature increases too quickly Pump is faulty Replace the pump Boiler shut-down, picture flashes: Max. number of reset Boiler has been reset Reset boiler through attempts from remote three times with the panel remote control control reached...
- Page 61 NOTES _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ _____________________________________________________ AST 14 C 292/00...
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- Page 63 AST 14 C 292/00...
- Page 64 FONDITAL GROUP Minorca Monothermal Technic Manual Customer Care Department 1st edition, June 2016 AST 14 C 292 – 00...
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