Fondital Nias Dual Line Tech BTN 24 Installation, Use And Maintenance Manual
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- Page 1 IST 03 C 294 - 02 NIAS DUAL INSTALLATION USE AND MAINTENANCE...
- 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 service the boiler properly. The Manufacturer recommends that Customers contact authorized qualified personnel only for maintenance and repair operations.
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Page 3: General Information For The Fitters, Maintenance Technicians And Users
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 fitter 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. This boiler is designed for connection to a central heating system and to a hot domestic water system. -
Page 4: Rapid Operating Instructions
RAPID OPERATING INSTRUCTIONS The following instructions will help you to switch the boiler on quickly and regulate it for immediate use. It is presumed that the boiler has been installed by a qualified fitter, it has been used before and is ready to operate correctly. -
Page 5: Table Of Contents
TABLE OF CONTENTS General information for the fitters, maintenance technicians and users page 3 Rapid operating instructions page 4 User instructions page 7 1.1. Control Panel page 7 1.2. page 8 1.3. BOILER STATUS – LCD ACTIVATION CORRESPONDENCE page 9 1.3.1. - Page 6 LIST OF FIGURES fig. 1 - Control panel page 7 fig. 2 - Liquid crystal display page 8 fig. 3 - Fictitious room temperature page 12 fig. 4 - Thermoregulation curves page 12 fig. 5 - Filling tap page 13 fig.
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Page 7: User Instructions
USER INSTRUCTIONS 1.1. Control panel fig. 1 1. Liquid crystal display (LCD) The LCD displays the boiler status and operating data (see fig. 2). 2. Boiler mode selector With the selector on RESET , the boiler restarts after activation of the burner shutdown device. With the selector on OFF, the boiler is in stand-by mode, with the heating and hot water functions disabled. -
Page 8: Lcd
1.2. fig. 2 a. DHW indicator (tap symbol) This comes on when the boiler is in DHW mode. It flashes when the DHW temperature is being regulated via regulator 3 (fig. 1). b. Water heater on indicator This indicator comes on when Aqua Premium system is activated via regulator 3 (fig. 1). Refer to subsection 1.4.3. c. -
Page 9: Boiler Status - Lcd Activation Correspondence
1.3. BOILER STATUS – LCD ACTIVATION CORRESPONDENCE 1.3.1. Normal operation Boiler selector on OFF Boiler selector on ANTI-FREEZE Boiler selector on SUMMER or WINTER Aqua Premium system disabled, no function active The water flow temperature is displayed Boiler selector on SUMMER or WINTER Aqua Premium system enabled, no function active The water flow temperature is displayed Boiler selector on SUMMER or WINTER... -
Page 10: Operating The Boiler
1.4. Operating the boiler 1.4.1. Switching on It is presumed that the boiler has been installed by a qualified fitter, it has been used before and is ready to operate correctly. • Open the gas cock; • Turn the master switch to ON – the LCD (fig. 1) light up and shows the active function (see table 1) OFF/SUMMER/WINTER/ANTI-FREEZE;... -
Page 11: Instantaneous Production Of Dhw
When there is a demand for hot water, the tap symbol (fixed) and the instantaneous water temperature are displayed. The burner symbol shows while the burner is in operation. The boiler can also operate as a standard instantaneous boiler, with the storage tank disabled. 1.4.3.2. -
Page 12: Pump And Valve Anti-Shutdown Function
1.4.5. Pump and valve anti-shutdown function If the boiler remains inactive and: - selector 2 is not in the OFF position, - the boiler is still connected to the mains supply, the pump, the switching valve and the two-way valve activate briefly every 24 hours to keep them efficient. 1.4.6. -
Page 13: Boiler Shutdown
1.5. Boiler shutdown The boiler shuts 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 kinds of shutdown and the procedure to follow in each. -
Page 14: Alarm Due To Temperature Probe Malfunction
1.5.5. Alarm due to temperature probe malfunction If the burner shuts down due to malfunction of the temperature probes, the boiler shutdown symbol is displayed and the following codes may flash: • E05, CH probe: the boiler does not work; •... -
Page 15: Technical Features And Dimensions
TECHNICAL FEATURES AND DIMENSIONS 2.1. Technical features This boiler has a built-in multi-gas atmospheric burner. All versions come with electronic ignition, an ionization flame and an AQUA PREMIUM system for the production of DHW, with a 25- litre stratification storage tank and a secondary plate heat exchanger. The following versions are available: BTN 24 a natural-draught open-flue boiler for CH and DHW, heat output 23.31 kW... -
Page 16: Dimensions
2.2. Dimensions Mod. BTN 43 56 View from View from above below Gas inlet Filling tap CH flow CH drain tap DHW outlet Storage/DHW drain tap Cold water inlet 3-bar safety valve (CH) CH return 6-bar safety valve (DHW) fig. 6... - Page 17 Mod. BTFS 43 56 View from View from below above Gas inlet Filling tap CH flow CH drain tap DHW outlet Storage/DHW drain tap Cold water inlet 3-bar safety valve (CH) CH return 6-bar safety valve (DHW) fig. 7...
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Page 18: Boiler Layout
2.3. Boiler layout LIMIT THERMOSTAT V3V MOTORIZED 3-WAY VALVE MOTORIZED 2-WAY VALVE VASO ESP. DHW expansion vessel CH PUMP WITH DEAERATOR SANITARIO DHW PUMP PRIORITY FLOW SWITCH acqua fredda Cold water VALVOLA DI SICUREZZA 6-bar safety valve 6 bar VM (2 vie) SCAMBIATORE Secondary plate RUBINETTO... -
Page 19: Operating Data
2.4. Operating data Burner pressures must be checked after 3 minutes of boiler operation. BTN 24 Min. heat Max. heat Nozzle Burner pressure Max. heat input Gas mains Fuel output output diameter (mbar) (kW) pressure (mbar) (kW) (kW) (mm) Methane gas G20 25.7 9.85 23.31 1.25... -
Page 20: Technical Specifications
2.5. Technical specifications BTN 24 BTFS 24 BTFS 28 BTFS 32 II2H3+ II2H3+ II2H3+ II2H3+ Boiler category Number of burner nozzles Minimum CH pressure Maximum CH pressure Minimum DHW pressure Maximum DHW pressure l/10’ DHW specific flow rate (ΔT 30K) V ~ Hz 230 ~ 50 230 ~ 50... -
Page 21: Instructions For The Fitter
INSTRUCTIONS FOR THE FITTER 3.1. Installation standards This is a II2H3+ boiler which must be installed in compliance with the applicable laws and standards in the country of installation. 3.2. Installation Only original accessories and spare parts supplied by the manufacturer must be used for installation and maintenance. - Page 22 WALL-MOUNTING TEMPLATE Fitting Copper pipe Ø Ø (mm) (mm) M = CH flow 3/4" C = DHW flow 1/2" G = Gas 1/2" F = Cold water 1/2" R = CH return 3/4" fig. 9...
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Page 23: Installing The Boiler
3.2.4. Installing the boiler Before connecting the boiler to the CH and DHW system, it needs to be cleaned thoroughly. Before putting a NEW system into service, clean thoroughly to remove any metal residue left over from manufacturing and welding processes, and any oil and grease deposits. This is because if they got into the boiler they would damage it or interfere with operation. -
Page 24: Air/Flue Gas System For Forced Draught Boilers (Btfs)
Connecting to the stack DIMENSIONS FOR CONNECTING THE FLUE GAS PIPE The stack plays a vital role in efficient operation of the system. FOR NATURAL DRAUGHT BOILERS It must meet the following requirements: • It must be made of waterproof material that is resistant to the temperature of the flue gas and any condensate formed. -
Page 25: Air/Flue Gas Pipe Configuration
type type 3.2.7.1. Air/flue gas pipe configuration: type B22, C12, C32, C42, C52, C82 B22 This boiler is intended for connection to an existing flue system either inside or outside the boiler room. Combustion air is drawn straight from the boiler room itself and flue gas is conveyed to the outside. -
Page 26: Air/Flue Gas System With 100/60 Mm Diameter Coaxial Pipes
3.2.7.2. Air/flue gas system with 100/60 mm diameter coaxial pipes C12 - C32 - C42 installation types BTFS 24 The minimum acceptable length of pipes is 0.5 metres plus one elbow. The maximum acceptable length of pipes is 4 metres plus one elbow. In the presence of additional elbows, the maximum acceptable length must be reduced by 1 metre for each elbow installed. -
Page 27: Air/Flue Gas System With 80 Mm Diameter Split Pipes
3.2.7.3. Air/flue gas system with 80 mm diameter split pipes Choosing the right diaphragm supplied with the boiler Pipe length Diameter of the flue gas C12 - C32 - C42 - C52 - C82 installation types diaphragm (mm) L < 2 Ø... -
Page 28: Direct Air Intake And Flue Gas Discharge With 80 Mm Diameter Duct
3.2.7.4. Direct air intake and flue gas discharge with 80 Choosing the right diaphragm supplied with the boiler mm diameter duct Pipe length Diameter of the flue gas diaphragm (mm) B22 installation type 0.5 ≤ L ≤ 9.5 Ø 49 9.5 <... -
Page 29: Measuring Combustion Efficiency
3.2.8. Measuring combustion efficiency 3.2.8.1. Chimney-sweep function The boiler has a chimney-sweep function that can be used for testing boiler combustion efficiency and adjusting the burner. To activate this function, it is necessary to open the front section of the casing for access to the controls. -
Page 30: Gas Mains Connection
3.2.9. Gas mains connection The cross-section of the gas supply pipe must be equal to or greater than that of the boiler gas inlet pipe. The cross-section of the pipe depends on its length and route and the gas flow rate. The gas pipe must be dimensioned accordingly. -
Page 31: Adjustable By-Pass
3.2.11. Adjustable by-pass By-pass By-pass disabled enabled The boiler is equipped with an adjustable by-pass that can be disabled by means of a screw. Figure 20A shows the position of the screw to disable the by-pass. Figure 20B shows the position of the screw to enable the by-pass. The boiler is delivered with the by-pass disabled. -
Page 32: Installation Of The (Optional) External Probe And Sliding Temperature Operation
3.2.15. Installation of the (optional) external probe and sliding temperature operation The boiler can be connected to an (optional) external temperature probe for sliding temperature operation. Only original external temperature probes supplied by the manufacturer must be used. If non-original external temperature probes are used, correct operation of the boiler cannot be guaranteed. The external temperature probe must be connected by means of a double insulated wire, minimum cross-section 0.35 sq.mm. The probe must be connected to terminal M8 on the boiler’s printed circuit board (fig. 23). The temperature probe cables must NOT be routed together with power cables. -
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 purging valve on all the radiators and check the efficiency of the automatic boiler valve. •... -
Page 34: Wiring Diagram
230Vac 50Hz 2 1 3 close open RIVEL OPENTH OPENTH SEXT TAMB FUSE FONDITAL ZONE-BATT GROUP MODUL BTFS only SOLO BTFS REMOTO 0SCHEMOD17: boiler main PCB E.ACC: ignition electrode SE: external temperature probe (optional) 0CIRCSTA08: 24Vcc relay pcb E.RIV: detection electrode... -
Page 35: Adapting To Other Gases And Regulating The Burner
3.6. Adapting to other gases and regulating the burner This boiler is built to run on the type of gas specified on the order, which is shown on the packaging and on the boiler rating plate. If you wish to switch to another type of gas, this must be done by a qualified technician using the accessories supplied by the manufacturer. -
Page 36: Testing The Boiler
TESTING THE BOILER 4.1. Preliminary checks Before testing the boiler, it is advisable to check that: • the installation complies with the current regulations; • the flue gas discharge pipe and terminal are installed as instructed: when the boiler is running, no combustion gas must leak from any of the gaskets;... -
Page 37: Combustion Analysis
Cleaning operations: • Inside of the boiler • Gas nozzles • Air intake and flue gas discharge circuit (BTFS) • Draft diverter (BTN) • Boiler room ventilation grille (BTN) • Flue gas side of the heat exchanger. Checks to perform when using the boiler for the first time. •... -
Page 38: 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. Burner does not ignite. Gas valve disconnected. Reconnect it. Gas valve faulty. Replace it. - Page 39 BOILER STATUS PROBLEM POSSIBLE CAUSE SOLUTION The boiler has shut down. The CH probe disconnected. Reconnect it. symbol is displayed and code E05 flashes. CH probe not working. Operation is resumed automatically when the cause of shutdown has CH probe faulty. Replace it.
- Page 40 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 294 - 02 Luglio 2009 (07/2009)
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