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Nova Florida LIBRA DUAL BTFS 24, Installation, Use And Maintenance Manual

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Nova Florida LIBRA DUAL BTFS 24 Installation, Use And Maintenance Manual Download Page 2

Dear Customer,
Thank you for choosing and buying one of our boilers. Please read these instructions carefully in order to 

install, operate, and maintain this equipment properly.

Manufacturer recommends Customers to contact authorized qualified personnel only for any maintenance and 

repair operations.

2

Summary of Contents for LIBRA DUAL BTFS 24

Page 1: ...LIBRA DUAL BTFS 24 BTFS 28 BTFS 32 INSTALLATION USE AND MAINTENANCE GB IST 04 C 150 01 ...

Page 2: ...one of our boilers Please read these instructions carefully in order to install operate and maintain this equipment properly Manufacturer recommends Customers to contact authorized qualified personnel only for any maintenance and repair operations 2 ...

Page 3: ...e be sent to specific waste management sites Keep the packaging out of the reach of children as by its nature it may represent a hazard In the event of failure and or faulty functioning switch off the boiler Do not attempt to make repairs and contact a qualified service te chnician Manufacturer approved parts must be used for all repairs to the boiler Non observance of the above re quirements may ...

Page 4: ...12 3 2 4 Installing the boiler 12 3 2 5 Boiler room ventilation 13 3 2 6 Air flue gas system 13 3 2 7 Air flue gas system configuration 14 3 2 8 Air flue gas system with 100 60 mm diameter coaxial pipes 15 3 2 9 Air flue gas system with 80 mm diameter split pipes 15 3 2 10 80 mm diameter flue gas discharge system 16 3 2 11 Installation examples 17 3 2 12 Verifying combustion efficiency 18 3 2 12 1...

Page 5: ... water in the heating system is between 76 C and 85 C When the light is flashing it indicates that CH water temperature is above 85 C 8 Indication light green When the light is on and fixed it indicates that the boiler is operating in central heating mode When the light is flashing it indicates that the boiler has shut down due to a malfunction 9 Boiler operation mode reset knob When the knob is s...

Page 6: ... DHW from the water tank the combined DHW flow rate is larger than the one that can be produced by instantaneous boilers of identical thermal output or standard system boi lers with same capacity water tank The boiler can also be operated as a standard instanta neous boiler when the water tank is disabled 1 2 2 2 Instantaneous DHW production While the water tank is disabled the boiler operates as ...

Page 7: ...urning it clockwise WARNING Once the loading procedure is completed fully close the inlet tap Should the tap not be properly closed as pressure increases boiler CH safety valve may open and water flow out Should boiler frequently shut down contact a Service Centre or qualified personnel for service 1 2 3 5 Shut down due to malfunction of tempe rature probes Should the burner shut down due to malfu...

Page 8: ...nel Electronic safety board and integrated modulation Electronic ignition with separated igniter Flue gas pressure switch Motorized gas valve CH safety valve 3 bar DHW safety valve 6 bar DHW filtre User interface Reset stand by summer winter summer and anti free zing function knob DHW temperature knob 35 57 C range CH water temperature knob 35 78 C range Lights indicating Power mains connection CH...

Page 9: ...Water tank probe DRAINING TAP CH EXPANSION VESSEL 6 bar SAFETY VALVE DHW EXPANSION VESSEL 3 bar SAFETY VALVE CH RETURN CH FLOW DRAINING TAP VM 2 WAY WATER PRESSURE SWITCH M M F LOADING TAP PR By pass pic 4 TS LIMIT THERMOSTAT V3V MOTORIZED THREE WAY VALVE VM MOTORIZED TWO WAY VALVE PR CH PUMP WITH INTEGRATED AIR PURGING DEVICE PS DHW PUMP F PRIORITY FLOW SWITCH ...

Page 10: ...min max Methane Gas G20 30 5 28 4 10 0 20 1 35 1 3 11 5 Butane Gas G30 30 5 28 4 10 0 29 0 80 3 5 28 5 Propane Gas G31 30 5 28 4 10 0 37 0 80 4 5 33 0 No 2 chart Instantaneous DHW supply T 45 C 9 0 litre per minute Instantaneous DHW supply T 40 C 10 2 litre per minute Instantaneous DHW supply T 35 C 11 6 litre per minute Instantaneous DHW supply T 30 C 13 6 litre per minute Instantaneous DHW suppl...

Page 11: ... weight kg 67 0 67 5 68 0 Methane gas consumption m3 h 2 70 3 23 3 46 Butane gas consumption kg h 2 01 2 40 2 62 Propane gas consumption kg h 1 98 2 37 2 51 Maximum CH working temperature C 83 83 83 Maximum DHW working temperature C 62 62 62 Total capacity of expansion vessel l 8 10 10 Maximum recommended CH system capacity l 160 200 200 Value related to 15 C 1013 mbar condition Maximum water temp...

Page 12: ...self The TEMPLATE is made of heavy duty paper and is to be affixed to the wall where the boiler is to be mounted It pro vides all the indications required to drill the holes for fixing the boiler to the wall which is done using two screws and wall plugs The lower section of the TEMPLATE shows where to mark the exact spot where the couplings are to be positioned for boiler connection to the gas sup...

Page 13: ...boiler room therefore specific recommendations need not to be applied concerning openings and ventilation necessary in case of room air depletion or involving boiler room requirements It is mandatory to install the boiler in an adequate room following laws and standards which are consi dered as an integral part of this manual applicable in the country of installation 3 2 6 Air flue gas system In d...

Page 14: ...ing 500 mm sides C32 This boiler is intended for connection to vertical outlet and intake ducts con nected to the outside by means of coa xial or split ducts The distance between air intake duct and flue gas flue duct is to be a mi nimum of 250 mm see picture to the right and both terminals must be po sitioned within a squared area having 500 mm sides C42 This boiler is intended for connection to ...

Page 15: ... In presence of additional elbows maximum acceptable len gth must be reduced by 1 meter for each elbow installed Choosing the applicable diaphragm supplied with the boiler Pipe length m Flue gas discharge diaphragm diameter mm 0 5 L 1 Ø 45 1 L 2 Ø 47 2 L 3 Ø 49 3 L 4 No diaphragm required 97 750 450 376 535 100 pic 7 Dimensions for connection to coaxial air flue gas system pic 6 DIAPHRAGM SEALING ...

Page 16: ...nstall the standard air intake deflector Pipe length m Flue gas discharge diaphragm diameter mm 1 L 11 Ø 49 11 L 21 No diaphragm required BTFS 32 Air intake The load loss of each 90 wide radius R D air intake el bow is equivalent to a 1 5 meter long pipe The load loss of each 90 narrow radius air intake elbow is equivalent to a 2 meter long pipe The load loss of the air intake terminal is not to b...

Page 17: ... 51 air intake diaphragm Pipe length m Flue gas discharge diaphragm diameter mm 0 5 L 5 5 Ø 51 5 5 L 10 5 No diaphragm required WARNING Flue gas pressure switch intervention Should the air flue gas system malfunction the safety devi ce shuts down the boiler see 1 2 3 3 paragraph It is absolutely forbidden to tamper with and or exclude the safety device If the boiler shuts down frequently check the...

Page 18: ...king temperature before perfor ming any measurement Split pipe system In order to verify combustion efficiency the following mea surements must be performed check combustion air temperature from no 2 opening see pic 13 B check flue gas temperature and CO2 concentration throu gh hole 1 see fig 13 B Allow boiler to reach working temperature before perfor ming any measurement 135 250 min 45 500 mm 50...

Page 19: ...ions Prior to installing the boiler the hydraulic system has to be cleaned in order to remove impurities which could be present in system components and damage the pump and the heat exchanger CENTRAL HEATING SYSTEM CH flow and return pipes must be connected to the rele vant 3 4 M and R couplings on the boiler pic 5 When calculating CH system pipe size bear in mind load losses caused by radiators t...

Page 20: ...s increased when external temperature decreases and is decreased when external temperature increases CH water temperature management ensures considerable energy savings the above described function is called sliding temperature management CH water temperature is managed in relation to the curves set in the remote control board program and depending on external temperature and home temperature ther...

Page 21: ...ed and while the water in the system is cold Boiler pressure gauge indicates water pres sure in the system WARNING After long boiler inactivity its pump may be blocked Before switching the boiler ON make sure that the pump is operative implementing the following proce dure Unscrew the protective bolt located in the centre front section of pump motor Put a screwdriver into the hole and manually rot...

Page 22: ...ing connector M2 M19 SP Boiler components connectors M1 M2 SRL Boiler components connectors E RIV Detection electrode E ACC Ignition electrode PR Recirculation pump PS DHW recirculation pump V Fan EV Two way motorized cut off water tank valve MDV Three way valve motor DK Low water pressure switch FL Flow sensor VG Gas valve TL Limit thermostat PV Fan pressure switch SR CH probe 10K Ohm B 3435 SB W...

Page 23: ...lating coil and protects gas valve pressure adjusting nut and screw Connect a manometer to V check in pic 18 Adjust R screw pic 20 to MAX by rotating it fully clockwise after removing the cap Select winter boiler operation by means of no 9 knob pic 1 Start boiler in chimney sweep mode see 3 2 12 1 Turn nut K external clockwise in order to increase nozz le pressure and vice versa pic 17b In LPG fir...

Page 24: ...sonnel Manufacturer recommends Customers to contact a Servi ce Centre for all maintenance and repairs required Before implementing any maintenance involving replace ment of components and or cleaning inside parts of boiler disconnect electrical power supply to the boiler Maintenance schedule Routine maintenance schedule must include the fol lowing checks General integrity of the boiler Boiler and ...

Page 25: ...replace if necessary Silicone pipes are disconnected or damaged Reconnect or replace silicone pipes Insufficient air intake or flue gas discharge Check air flue gas ducts unclog or replace as needed Fan is faulty Replace it PCB is faulty Replace it The boiler has shut down and red light no 3 is flashing Turn selector 9 to RESET position in order to resume boiler operation Boiler safety thermostat ...

Page 26: ...26 NOTES ...

Page 27: ...NOTES 27 ...

Page 28: ...manufacturer reserves the right to implement any necessary and or useful variation to products without modifying fundamental characteristics Fondital S p A Via Mocenigo 123 25078 VESTONE Brescia Italia Tel 0365 878 31 Fax 0365 596 257 e mail fondital fondital it www fondital it ...

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