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Rendimax N EL

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Note if after having correctly performed the ignition operation, the burners do not light and the reset button light 
on the electronic control unit is on, indicating that the control unit is blocked, wait around 10 seconds and then 
press the reset button.
The control unit is reset and will repeat the ignition cycle.
If, after the second attempt, the burners do not light, refer to paragraph 13 “troubleshooting”.
In the event of power failures, the burners will shut-down and will be automatically ignited once the power retur-
ns.

10.04 Temporary shut-down

To temporarily shut-down the boiler, simply place the boiler switch in position “0”.

10.05 Extended boiler shut-down

To shut the boiler down, proceed as follows:
• Turn the knob of the boiler switch to position ”0”;
• Close the gas cock upstream from the boiler;
• Disconnect power to the appliance.

N.B.

  If the boiler is not used for an extended period in winter, to avoid damage from frost, special anti-freeze 

should be added to the system, or else the system should be completely emptied.

10.06 checks after ignition

Following the first ignition:
• Check the gas circuit and the heating system for tightness.
• Check the correct operation of the boiler by effecting ignition and shut-down tests using the regulation 

thermostat.

• Check on the rear wall of the boiler, at the height of the draught diverter, that there are no flue gas leaks, signs 

of blockages of the flue or insufficient draught.

• Check the effectiveness of the flue during boiler operation.
• Check that the connecting pipe between the boiler and flue is perfectly sealed at the joints.
• Verify  that the circulation of water between the boiler and the heating system is correct.
• Make sure that, in the absence of a flame in the burner assembly, the appliance shuts-down.

11. SETTINGS

11.01 setting the heating temperature

The central heating water temperature is set by turning the knob on the boiler thermostat, on the control panel. 
Turn the knob clockwise to increase the central heating water temperature; anticlockwise to decrease it. The mi-
nimum temperature setting must not be below 50°.

11.02 setting the ambient temperature (with room thermostat installed)

The ambient temperature is set by turning the knob on the room thermostat to the desired value. This device, 
which is not supplied with the boiler, maintains the ambient temperature at the value set on the knob, reducing 
energy consumption and increasing the level of comfort.

Содержание RENDIMAX N EL

Страница 1: ...Nr A 9504 A 0085 AQ 0766 RENDIMAX N EL gas fired cast iron boiler for central heating with electronic ignition and flame control OPERATING INSTALLATION AND MAINTENANCE INSTRUCTIONS cod 3543742 3 05 2...

Страница 2: ......

Страница 3: ...e or a suitable isolating device In the event of malfunction or faulty operation deactivate the appliance Do not attempt to repair or carry out any other operation on the appliance directly Contact qu...

Страница 4: ...n 7 4 Checks and maintenance 8 INSTALLATION AND MAINTENANCE INSTRUCTIONS 5 Description of the boiler 9 6 Main components 10 7 Technical specifications 11 8 Installation and safety devices 16 9 Electri...

Страница 5: ...ly installation conversion to other type of gas commissioning and maintenance of the boiler must be performed by specialist Companies following all the relative technical requirements and standards Th...

Страница 6: ...assembly 8 Control panel 9 Burner assembly Front view of the boilers with control panel cover open 5 3 11 10 14 15 13 9 6 7 12 8 1 2 4 8 5 3 11 10 13 1 2 10 Boiler switch 11 Reset button for electroni...

Страница 7: ...electronic control unit 11 Fig 1 is on wait around 10 seconds and then press the reset button The control unit is reset and will repeat the ignition cycle Note In the event of power failure the burner...

Страница 8: ...ot clean the appliance and or its parts with easily inflammable substances e g petrol alcohol etc Do not leave containers with inflammable substances in the room where the appliance is installed 4 02...

Страница 9: ...able speed pump expansion vessel and safety valve The boilers are manufactured as standard for operation on natural gas G20 The appliance can be converted from operation on natural gas to lpg G31 refe...

Страница 10: ...Reset button for electronic flame control unit 12 Electronic flame control unit 13 Safety thermostat with automatic reset 14 Hheating system pump pv version 15 Cap on fitting for filling the system p...

Страница 11: ...00 kW 12 7 18 4 23 0 27 6 kcal h 11 000 15 800 19 800 23 800 Number of sections 3 4 5 6 Boiler water content lt 7 3 9 0 10 7 12 4 Max working pressure bar 6 6 6 6 injector mm 2 45 2 35 2 35 2 35 Nomin...

Страница 12: ...800 19 800 Number of sections 3 4 5 Boiler water content lt 7 3 9 0 10 7 Max working pressure bar 6 6 6 injector mm 2 45 2 35 2 35 Nominal pressure mbar 13 0 15 2 14 2 injector mm 1 55 1 50 1 50 Nomi...

Страница 13: ...the output variation feature governed by the relative standards the boiler maintains near constant thermal efficiency values and combustion characteristics The instructions for adjusting the gas valve...

Страница 14: ...em models 16 23 30 pv The difference between the supply and return temperature in the central heating system can be adjusted using the speed selector switch on the pump In this way the flow rate and d...

Страница 15: ...tem water flow rate 7 07 Residual discharge head available to the heating system models 16 23 30 PV Note The diagram in fig 7 refers to the maximum heating pump discharge head flow rate with the speed...

Страница 16: ...fitted Check any existing flues to make sure they have been carefully cleaned as any scale flaking off the side walls during operation may block the passage of the flue gas creating extremely dangerou...

Страница 17: ...eck that on exceeding the pressure value indicated above the safety valve intervenes to discharge the excess water 8 11 Temperature limiting device safety thermostat with automatic reset The function...

Страница 18: ...s components inside the control panel see paragraph 9 02 Note If replacing the power cable only use HAR H05 VV F 3x0 75 mm2 cables with a maximum external dia meter of 8 mm Diagram of electrical conne...

Страница 19: ...ting from the failure to electrically earth the boiler 24 Ignition electrode 32 Heating system pump models 16 23 30 pv 44 Gas valve 49 Safety thermostat 63 Boiler thermostat 72 Room thermostat not sup...

Страница 20: ...nity of the boiler and that the flue is not blocked 10 03 ignition Set the boiler thermostat to the minimum temperature position and power the appliance using the boiler switch To ignite the burner as...

Страница 21: ...it and the heating system for tightness Check the correct operation of the boiler by effecting ignition and shut down tests using the regulation thermostat Check on the rear wall of the boiler at the...

Страница 22: ...to the instructions provided in paragraph 8 06 In the case of an open vessel system simply check the water level periodically Decrease Increase 11 03 adjusting the heating system power This procedure...

Страница 23: ...ig 12 Using a small screwdriver adjust the ignition step to lpg Replace the small cap 3 on the regulator 12 02 to change from lpg g31 to natural gas g20 Follow the operations described in paragraph 12...

Страница 24: ...eration of the boiler Check that the connecting pipe between the boiler and flue is perfectly sealed at the joints Check that in the absence of a flame in the burner assembly the appliance shuts down...

Страница 25: ...14 Disconnect the cables from the electrode assembly Unscrew the four screws which fasten the gas supply pipe upstream from the gas valve Unscrew the two nuts which fasten the door of the combustion c...

Страница 26: ...the boiler is properly earthed Check that the gas valve is powered Check the connections to the ignition and ionisation electrodes In the ignition phase there is no spark between the electrodes Check...

Страница 27: ...the heating system is too high or too low Check the operation of the regulation thermostat Check that the pump is not blocked Check that the circulating pump is adequately rated for the system Explosi...

Страница 28: ...FERROLI S p A Via Ritonda 78 a 37047 San Bonifacio Verona ITALY www ferroli it...

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