Biasi riva combi boiler manual

You need to make sure that no wiring gets trapped. Afterwards you need to insert spindles in the control panel knobs. Do it till the notch touches the potentiometer edge. It is not necessary to force them in the knob.

After cleaning or replacement as detailed above, if it deemed necessary to undertake a combustion analysis. Turn off the gas supply and disconnect the gas isolation cock connector from the inlet port of the gas valve.

Unscrew the connector K, remove the fixing fork and remove the pipe. Unscrew the screws and remove the valve. Prior new valve fiting you should pre set it. In order to preset it you need to remove the brass plug and turn the plastic screw fully clockwise until it stops.

Do not overtight. Adjust the gas valve using the fluea nalyser. After cleaning or replacement as detailed above, it is deemed necessary to undertake a combustion analysis.

If the flow rate of the d. Install the flow limiter C as described on the picture below, putting its smaller diameter towards the part B.

Remove the fixing spring B and remove the primary circuit pressure switch A as described on the picture. To lubricate the O ring gaskets you will need to use a grease which is based on silicon and at the same time compatible to be in use with foods. Naturally it should also be accepted by the water Authorities. Completely unscrew the connection F, the locknut G as shown on the picture and remove the expansion vessel from the top of the boiler.

Check that the pressure on the pressure gauge is not below the correct setting. If required, top up the refill the system correctly. Bleed any air present in the radiators, when necessary. It is necessary to top up the appliance with water again, so as to raise the pressure to an adequate level. If topping up with water has to be done very frequently, system needs to be checked for leaks. To refill the system first isolate your boiler from any the electrical supply.

The filling loop should be reconnected back the way it is demonstrated on the picture below. Open the valves of the filling loop and watch the display until it reaches normal filling pressure. The air that will come into the boiler during the filling process will automatically vent through the air purger. Each boiler is fitted with the air purger.

In most of the cases large system venting will result in the pressure drop within the system, that is why you should be very careful when venting the air from radiator circuit.

Always ensure that the pressure gauge is set at the required pressure. If you experience any difficulty with the operation of your boiler, you should switch off the boiler immediately. Boiler should be turned off switch of t the fused spur isolation. Contact your Pro Fit Loyality Club service engineer. Check on the pressure gauge if the central heating circuit pressure is close to 3 bars. If that is the case, then the temperature will rise in the circuit and it can consequentially cause the pressure relief valve to open.

To do so, you will need to vent some of the water extend in the boiler via the bleed valves present on your radiators. Most probable reason is thee impurities caught in the switch of the domestic hot water. Alternatively it can be the limescale deposited in the domestic hot water heat exchanger. It is advisable to have the appliance cleaned out by an authorized service engineer. Shut off the valves , they are located under the boiler and then call an authorized service engineer.

For reasonably economical service install a room thermostat. If no air present the valve opening check needs to be performed. If you feel that the average temperature is too high, do not replace the radiator valves, but reduce the central heating temperature rather.

The anti-freeze system and any additional protections protect the boiler from possible damage due to frost. This system does not guarantee protection of the entire hydraulic system. When boiler is operating in stand by mode, the anti-freeze function can still be activated.

Biasi Boiler Guide All Biasi gas boilers for your home including parts, troubleshooting guide and efficiency! Troubleshooting Manual. Basic Fault Finding Procedure When troubleshooting your Biasi Combi or System boiler please follow the following safety checks need to be done: — Gas Supply: verify basic boiler gas supply, check if it is clean and gas has a free passage.

Things to remember before using the boiler, after each restart and repair 1. Before lighting the boiler you are advised to have a professionally qualifi ed person check that the installation of the gas supply: — is of the correct gauge for the flow to the boiler — is fitted with all the safety and control devices required by the current regulations.

Do not touch the appliance with any parts of your body especially bare feet, hand etc. Boiler reset Warning! Hold down keys 15 and 16 Adjusting D. Servicing your Appliance Per users manual and safety reasons your boiler should be serviced once every year. Error codes The LCD display indications provide help in the diagnosis of fault finding. Insufficient pressure: the boiler stops displaying the water lack error. Boiler waiting for heat request Boiler in summer mode d.

The primary circuit tem perature is displayed. Boiler in winter mode c. The primary circuit temperature is displayed. Boiler on demand for c. This information is not displayed. You can enter the function pushing the buttons 12 and 13 together. Press it until the letter di appears on the display that alternates with codes below: Code Meaning 01E Missing burner ignition 02E Safety thermostat fault 03E General lockout 04E Primary circuit fault no water or flow absence 05E Faulty fan control system 06E Faulty c.

Repair and replacement parts Biasi boilers repair and replacement parts are being handled by Pro Fit Loyality Club specialists.

Safety First! Initial steps Before you start to work on Biasi boilers turn off the thermostat knob. It is located on the control panel cover Allow your boiler to cool Isolate the electricity supply.

Turn off the gas at both : the gas valve and at the gas meter. Each time when removing and replacing parts involving the draining the system, first close the boiler isolation valves and then drain the boiler using the pressure gauge connection.

Each time when removing any items containing water hoses, pipes etc make sure they do not spill on electrical components. Each time replace easily useable parts like o-rings and gaskets with new parts Each time conduct all electrical check: polarity, continuity and resistance earth test before and after any work Warning!

Isolate the appliance 2. Re-assemble in reverse order Warning! Fan and the Air box replacement 1. Gain General Access -remove outer case front panel 3.

Disconnect the rubber pipe C 4. Unscrew the gas connectors D and remove the gas pipe E. Disconnect the connector F 6. Unscrew the screws H. Remove the fan A with the air box. Remove the screws I and the air box Ignition and detection electrodes replacement 1. Disconnect the connector of the ignition electrodes, detection electrode and the earth wire 4.

Unscrew the screws and remove the ignition electrodes and the detection electrode 5. Re-assemble in reverse order Condensing heat exchanger replacement 1. Now primary boiler circuit should be emptied 7. Using pliers, remove the spring L moving it down wards and disconnect the rubber pipe M as shown on the picture below 8.

Remove the clips N 9. You need to loosen O connection totally and pipe P need to be moved a bit upwards, after this turn it right Unscrew the screws S and remove the clamps Unscrew the screws T and remove the support U 13 In order to completely disconnect the condensing heat exchanger, you need to slide it a bit forward Re-assemble in reverse order in reverse order.

Burner replacement 1. Remove the air box and the fan 4. Unscrew the screws I and remove the fan 5. Remove the burner by sliding it forward. Ensure the burner is correctly located by lining up the locating tab Safety Thermostat replacement 1. Disconnect the wiring B 4. Unscrew the screws C and remove the safety thermostat. Flue temperature probe NTC and Safety thermal fuse replacement 1. Unscrew and remove the flue temperature probe from the condensing heat exchanger.

You will see that the LCD display will fash as show message as described on the picture below Safety lock-out may occur even in case of a blockage of the condensate drainage. Cleaning the condensing heat exchanger and burner 1. Remove the sealed chamber lid. Disconnect the connectors of the ignition electrodes E and detection electrode F as shown on the picture 5.

Disconnect the rubber pipe G 6. Unscrew the gas connector H. Loosen do not remove the screw I. Re-assemble in reverse order Pump replacement 1. Empty the primary circuit of the boiler 4. Extract and lower the control panel 5. Disconnect the connector B as shown on a picture below 6. Loosen the connection C, remove the fork D and the pipe E 7. Remove the fork F as shown on the picture below and the connection of the capillary pipe of the pressure gauge 8.

Uninstall G locking plate 9. Uninstall H connection Prior replacing pump following checks must be done: — each time check if the pump is not seized and that the movement of the rotor is not subject to mechanical impediments. Remove the air release plug of the pump and turn the rotor with a screwdriver — check the electrical continuity. Electronic control P. B replacement 1. Gently flex the hook located on each side of the socket 4.

Gas valve replacement 1. Remove the screw G and disconnect the connector H as shown on the picture below 4. Using pliers, remove the spring I and the rubber pipe J. Unscrew the screws and remove the valve 7.

Unscrew the filer and remove it from the body of the filter 4. Install the flow limiter C as described on the picture below, putting its smaller diameter towards the part B 5. Re-assemble in reverse order Primary circuit pressure switch replacement 1. Remove the fixing spring B and remove the primary circuit pressure switch A as described on the picture 3 Disconnect the connectors C as seen on the picture. Page O D. Storage Tank The flow of the primary circuit runs through the 5 Loosen completely the connection G and coil from the top to the bottom.

The domestic cold move apart the small pipe. Attention - Only use the lubricant recommended in the spare parts catalogue to lubricate the O-rings.

Page Checks Figure 2 removing the pump power supply cable and measuring the resistance of said wiring. Figure 3 Electrical resistance of the windings at ambient temperature must be about Page 28 6 Unscrew the connection G. Page Three Way Diverter Valve 1 Remove the front and the side panels of the motor windings the motor must be disconnected boiler. Page Control P. Page 32 14 and Operation Lights The Control p.

Page Ignition Gas Pressure Adjustment This adjustment does work quite well even if there is a problem with the not influence the maximum useful output NTC probes. The table below summarizes the boiler operation. Page Checks If not, remove the spindle by the arrow in Figure Switch functioning device With the boiler operating and the burner on, open the negative pressure test point of the Venturi device. Page 40 Ignition time starts Presence of flame?

Closes gas valve Stops ignition sparks Ignition time Memorizes shutdown finished? Shutdown indicator light on Stops ignition sparks Gas valve open Reset push button pressed? Presence of flame? C Maximum gas pressure adjustment. D Modulation operator's electric connectors. E On-off operators electric connector. F On-off operators. G Gas valve inlet pressure test point. Page Checks After any service operation on the components of the gas circuit check all the connections for gas leaks.

Warning: After cleaning or replacement as detailed above, if it deemed necessary to undertake a combustion analysis. Refer to Figure 3 for the correct Warning: Isolate the boiler from the mains wiring connectors on the switch. Page 44 H see Figure 5. It would be Figure 4 5 Re-assemble the parts in reverse order of removal. Page Removal Of The D. Figure 6 4 Remove the probe holder spring O freeing the probe P Figure 7.

Page O Temperature Probe Ntc d. NTC B in Figure 2. Figure 3 4 Remove of the d. NTC: Remove the fork that blocks the probe cable. Figure 4 5 Reassemble the Temperature probe carrying out the removal operations in reverse order.

Page 50 Air pressure switch, the removal operations in reverse sequence. Warning: To correctly connect the Air pressure switch, refer to Figure 6 and Figure 3 for the correct wiring. Page O Ignition And Detection Electrodes, Burner And Injectors 2 Check for the correct distance between the 4 Disconnect the electrode wires from the full metallic edges of the ignition electrodes see sequence ignition device.

Figure 2. Page 52 8 Extract the electrodes from the burner.