Table of Contents
Subscribe to Our Youtube Channel
Related Manuals for Fondital Nias Dual BTFS 24
Summary of Contents for Fondital Nias Dual BTFS 24
- Page 1 DIDACTIC MANUAL FAMILY: Wall-hung boilers Aqua Premium (compact GROUP: with excludable water tank) Nias Dual BTFS MODELS: Libra Dual BTFS CODE: AST 14 C152/00 ______________________________________________ Edition, March 2006...
- Page 2 Contents CHAPTER 01 GENERAL INFORMATION 1.1 - Models 1.2 – Dim ensions 1.3 – Complete view and components ___________________Page 03 CHAPTER 02 OPERATION 2.1 – Op eration criteria 2.2 – Control panel 2.3 – Regulation fields 2.4 – Pump anti-blockage and anti-freez e system ___________________Page 06 CHAPTER 03 CHARACTERISTICS AND TECHNICAL DATA...
-
Page 3: General Information
NIAS DU AL BTFS ENCASED Instantaneous boiler, elevated DHW production with 25 litre water tank, excludable by the user. Fondital version. Model with reduced depth placed inside a metal casing to be built into the external wall. Output: 24, 28 and 32 kW... -
Page 4: Dim Ensions
1.2 DIMENSIONS Nias and Libra Dual BTFS indoor ELECTRIC PROTECTION: IP44 Nias and Libra Dual BTFS in-wall ELECTRIC PROTECTION: IXP5 D ________________________________________________________________________________ AST 14 C 152/00... -
Page 5: Complete View And Components
1.3 COMPLETE VIEW and COMPONENTS Air purging valve expansion vessel pressure switch Flue gas hood Mono- thermal exchanger Burner Water tank expansion vessel Electrodes Ignition transformer Gas valve DHW pump T wo-way valve DHW plate heat exchanger Safety valve Flow meter CH pump Hydraulic group... -
Page 6: Op Eration Criteria
CHP.2 OPERATION 2.1 OPERATION CRITERIA WATER TANK Flow meter Flow Return The boiler heats up automatically the water tank in a very short time when the aqua premium turns on. The system keeps the water in the tank at 10°C higher than the set DHW temperature. -
Page 7: Heating Mode
When the water tank switch is off, the DHW pump and the two way interception valve are not active, in this situation the boiler operates as a standard instantaneous boiler: HEATING MODE Flow meter Flow Return Flow meter DHW MODE (INSTANTANEOUS) Flow Return ________________________________________________________________________________... - Page 8 When the water tank switch is on, the DHW pump and the two way interception valve are active, the boiler can utilise the hot water present in the water tank. This process can take place in two ways depending on the water flow to the tap requested by the end user: reduced withdrawal and premium withdrawal.
- Page 9 DHW MODE (AQUA PREMIUM WITH ELEVATED WITHDRAWAL) This occurs when the end-user requests a quantity of DHW greater than the quantity permitted by a flow regulator placed after the plate heat exchanger (8l/min for 24kW, 10l/min for 28 Kw and 12l/min for the model with 32 Kw output). By utilising the hot water in the water tank (at higher temperatures) together with the production of domestic hot water produced by the plate heat exchanger of the appliance, the user is in a position to make use of a significant quantity of hot water...
-
Page 10: Control Panel
2.2 CONTROL PANEL Power light (green) Indication light (red) Indication light (green) Boiler mode selector – boiler reset Domestic hot water supply knob CH water temperature knob Water pressure gauge Aqua Premium system power switch The warning lights 1-8 can indicate two different situations: inform in the case of normal operation of the boiler or warn in the case of malfunctioning or shut-down of the boiler. - Page 11 WARNING LIGHTS IN THE CASE OF MALFUNCTIONING OR SHUT- DOWN OF THE BOILER Condizione Green ON L Flame detection s hut-down ON L Safety thermostat shut-down ON L Water press ure shut-down ON L Smoke ther mostat./press. s hut- down ON L ON L Flow probe malfunction...
-
Page 12: Regulation Fields
2.3 REGULATION FIELDS The regulation field of the heating temperature is from 35 to 78 °C. To prevent frequent and switching off in the heating mode, the boiler has a 4 minute waiting time between subsequent ignitions. Should water temperature in the system fall below 40°C the waiting time is aborted and the boiler re-ignites. -
Page 13: Characteristics And Technical Data
CHP.3 CHARACTERISTICS AND TECHNICAL DATA 3.1 CONSTRUCTION CHARACTERISTICS Mono-thermal, high output, copper heat exchanger. DHW Stainless steel plate heat exchanger. Vertical stratification 25 litre water tank with magnesium anode. Three-speed CH circulation pump equipped with air-purging device. DHW circulator. Motorized cut-off valve. 8 litre CH expansion vessel for BTFS 24 model and 10 litre for BTFS 28 and BTFS 32 models. -
Page 14: Operation Al D Ata
3.3 OPERATION AL D ATA BTFS 24 Burner pressure Max. heat Min. heat Gas mains Nozzle Max. heat [mbar] Function output output pressure diameter input [Kw ] [Kw ] [Kw ] [mbar] [mm] 25,5 23,8 1,25 13,5 Methane Gas G20 25,5 23,8 0,77... -
Page 15: Technical Data
3.4 TECHNICAL DATA BTFS 24 BTFS 28 BTFS 32 II2H3+ II2H3+ II2H3+ Boiler category Burner nozzles 1000 1200 Minimum CH flow rate Minimum CH pressure Maximum CH pressure Minimum DHW pressure Maximum DHW pressure L/ 10 DHW specific flow rate (∆t 30 according to EN 625) min. -
Page 16: Electrical Connections
CHP.4 GAS VALVE AND CONVERSIONS 4.1 GAS VAL VE SIT 845 Minimum adjusting Ma ximum adjusting screws screws Gas inlet pressure check GAS IN Mains supply GAS OUT ELECTRICAL CONNECTIONS To burner OF MOTORIZED VALVES Gas outlet pressure check MAX/MIN RESISTANCE VALUES OF THE COILS EV1 –... -
Page 17: Conversion From Lpg To Natural Gas
4.2 GAS CON VERSIONS CONVERSION FROM NATURAL GAS TO LPG Check that the boiler is disconnected from power mains; Remove the main burner; Remove the main burner nozzles and replace them with those bearing the correct diameter in relation to the new gas type (see tables in chapter 3.3 “Operational data”) - ATTENTION: it is mandatory to install the copper seals;... -
Page 18: Gas Val Ve Adjustment
4.3 GAS VAL VE ADJUSTMENT Remove the gas inlet pressure check screw by means of a small screwdriver, and connect a manometer in order to verify correct pressure from the network; connect a manometer to the gas outlet pressure check after removing the screw of the gas outlet check by means of a small screwdriver;... -
Page 19: Hydraulic Group
3 bar safety valve THE HYDRAULIC GROUP OF NIAS-LIBRA DUAL BOILER WAS DESIGNED COMPLETLEY BY FONDITAL ENGINEERS AS WITH ALL OF THE O THER HYDRAULIC GROUPS OF OUR BOILERS. DHW and CH probe parameters: 10Kohm at 25°C with β=3435 ________________________________________________________________________________... -
Page 20: Three-Way Valve
5.2 SECONDARY PLATE HEAT EXCH ANGER ALFA L AVAL 24 kW 22 plates 28 kW 26 plates 32 kW 26 plates 5.3 THREE-WAY VALVE Shutter Electric motor By-pass adjusti ng screw OPEN BY-PASS Adjustable by-pass CLOSED BY-PASS 5.4 2-WAY INTERCEPTION VAL VE - Ma ximum working temperature: 88°C - Ma ximum working... -
Page 21: Secondar Y Plate Heat Exchang Er
CHP.6 ELECTRONICS 6.1 ELECTRONIC BOARD - JU MPER Fondital Group has standardised the electronics of all of its boiler models, in fact besides the jumper for changing the gas, we find two other jumpers for choosing the boiler model: instantaneous... - Page 22 6.3 ELECTRONIC BOARD – DIAGR AM Indoor only boiler Standard for ENCASED boiler Optional for INDOOR boiler ________________________________________________________________________________ AST 14 C 152/00...
-
Page 23: Relay Board
6.4 RELAY BOARD Unlike the compact Dual boilers produced by Fondital without water tank, the Nias Libra Dual is equipped not only with a main electronic board, but with an extra board with relay and connectors to the DHW pump and the motorized two-way interception valve. -
Page 24: Flue Gas Systems
CHP.7 FLUE GAS SYSTEMS 7.1 COAXIAL PIPES 100/60mm TYPES: C12-C32-C42 The maximum acceptable length of horizontal coaxial pipes is 3 metres; in the presence of each additional bend, maximum acceptable length must be reduced by 1 metre; furthermore, the duct must have a 1% slope toward the exit, in order to avoid the entrance of rain. -
Page 25: Po Sitioning Of Terminals
7.3 POSITIONING OF TERMINALS For the wall positioning of the discharge terminals of the boiler, in the cases provided for in DPR n° 551 dated 29/12/99, observe the distances indicated in the following table: POSITIONING OF THE TERMINALS – FORCED DRAUGHT (extract from standard UNI 7129) POSITION OF THE TERMINAL Under window... -
Page 26: Standards And Recommendations
CHP.8 MAINTENANCE 8.1 STANDARDS AND RECOMMENDATIONS Once a year, by law, maintenance must be carried out on the boiler. Correct maintenance of the boiler allows the same to operate under the best conditions, protects the environment and makes the equipment fully safe for people, animals and property. Maintenance operations on the boiler must be carried out by qualified personnel. - Page 27 CHP.9 TROUBLESHOOTING 9.1 TABLE BOILER STATUS MALFUNCTION PROBABLE CAUSE SOLUTION Gas suppl y failure Chec k gas pr essure Gas val ve has disc onnected Reconnect gas val ve The burner does not ignite Gas val ve is faulty Replace it The el ectronic board is faulty Replace it Spar k electrode is faulty...
Need help?
Do you have a question about the Nias Dual BTFS 24 and is the answer not in the manual?
Questions and answers