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16

3

INSTALLATION INSTRUCTIONS

ATTENTION!

This boiler is intended solely for 

the use for which it was expressly 

designed. Any other use is to be 

considered improper and therefore 

dangerous.

This boiler heats water at a temper-

ature lower than the atmospheric 

pressure boiling temperature.

Before connecting the boiler, have pro

-

fessionally qualified personnel:

a) Thoroughly wash all the piping of 

the system to remove any residues 

or impurities which could jeopard-

ise proper operation of the boiler, 

even from a hygienic point of view. 

b) Check that boiler is set up to oper-

ate  with  the  available  type  of  fuel.

 

This can be seen written on the 

package and on the technical feature 

plate;

c) Check that the chimney/flue has an 

appropriate draught, without any 

bottlenecks, and that no exhausts 

from other appliances are inserted, 

unless the flue has been implement

-

ed to accommodate several utilities 

according to specific standards and 

regulations in force. Only after this 

check can the fitting between the 

boiler and chimney/flue be mounted;

ATTENTION!

If there is dust and/or if there are 

aggressive/corrosive vapours 

present in the installation room, 

the appliance must be protected 

suitably and must be able to 

operate independently from the air 

in the room.

ATTENTION! 

Only mount the appliance on a closed 

wall,  made  of  non-flammable  materi

-

al,  flat,  vertical  so  that  the  minimum 

distances required for installation and 

maintenance can be observed.

The boiler must be connected to a cen-

tral heating system and/or domestic hot 

water supply network compatible with its 

efficiency and output.

The boiler can be installed outside in 

a partially protected place or in any 

case in a place where the boiler is not 

exposed to the direct action of atmos-

pheric agents.

3.1  -  GENERAL WARNINGS

3.2 - INSTALLATION STANDARDS 

It  must  be  installed  by  a  professionally  qualified 

technician, 

who shall take the responsibility of 

observing all local and/or national laws published 

in the official journal, as well as the applicable 

technical standards.

3.3 - PREVENTIVE VERIFICATION 

AND VERIFICATION AND AD-

JUSTMENT OPERATIONS

NOTE!

Further details in the section 

‘‘Technical Information’’ at the address indicat-

ed on page 2.

NOTE!

Further details in the section 

‘‘Technical Information’’ at the address indi-

cated on page 2.

NOTE!

For further details relating to the standards, rules 

and regulations for safe installation of the thermal 

unit, refer to the section "Technical Information" 

on the boiler page of the www.unicalag.it website

Содержание R 24

Страница 1: ...E N G L I S H INSTALLATION AND SERVICING MANUAL X MAX M I N MAX MIN Reset bar service R 24 C 24 R 32 C 32...

Страница 2: ...It can be taken to a special recycling centre managed by the local authorities or to a dealer who offers this service Separate disposal of a domestic appliance avoids possible negative consequences fo...

Страница 3: ...s 40 4 2 Parameters that can be edited from the control panel 41 4 3 Adaptation to the use of other gas 43 4 4 Wiring diagram 45 4 5 Error codes 46 3 INSTALLATION INSTRUCTIONS 16 3 1 General warnings...

Страница 4: ...t was expressly designed Any other use is to be considered improper and therefore dangerous 1 1 GENERAL WARNINGS The instruction booklet is an integral and essential part of the product and must be ke...

Страница 5: ...ser as well as other documents concerning the appliance inserted in the envelope inside the packaging The user must keep this documentation safe for future consultation Inform the user about the impor...

Страница 6: ...h affect the operating safety of the appliance Attention To tighten or loosen the screwed fittings use only appropriate fixed spanners Incompliant use and or inappropriate tools can cause damage e g w...

Страница 7: ...T max Max domestic hot water temperature C Electrical characteristics 21 Electrical power supply 22 Consumption 23 Protection rating D Countries of destination 24 Direct and indirect countries of dest...

Страница 8: ...r over time The ideal water pH in heating systems must be within To minimise corrosion it is crucial to use a corrosion inhibitor in order for it to work properly the metal surfac es must be clean see...

Страница 9: ...antifreeze function only po sition the two knobs as shown in the figure The Antifreeze protection is always active Even by disabling the heating and domestic hot water services 1 8 BOILER ANTIFREEZE P...

Страница 10: ...rner 8 Expansion vessel 10 HL TL Safety thermostat 11 Hb SR Heating temperature sensor 12 Ht P Pump 13 Lp DK Water deficiency pressure switch 16 Diverting valve 2 TECHNICAL FEATURES AND DIMENSIONS 2 1...

Страница 11: ...safety thermostat 24 Aluminium Heat Exchanger Ca pacitor Condensate drain siphon outlet position C Domestic hot water outlet G G Gas inlet G F Cold water inlet G M Heating system flow G R Heating sys...

Страница 12: ...12 210 210 125 125 209 131 151 131 70 61 130 60 56 43 104 137 204 247 C F G R M Svs Rc Scond Sc 345 700 420 MAX M I N MAX MIN Reset bar service X View from above View from below...

Страница 13: ...13 Technical Features E N G L I S H 2 3 DIAGRAM OF FLOW RATE PRESSURE AVAILABLE FOR INSTALLATION Flow rate l h Avaible Head m c a metres of water...

Страница 14: ...operation dB A 43 46 Sound pressure level LpA at medium operation dB A Notes Room Temperature 20 C Data obtained with appliance operated with Nat Gas G20 Note measured in free field at 1 m distance fr...

Страница 15: ...ency at 30 of nom heat output in low temperature regime Tr 30 C 1 97 9 97 8 Range rated boiler YES NO NO NO Auxiliary electricity consumption At full load elmax kW 0 035 0 064 At part load elmin kW 0...

Страница 16: ...he appliance must be protected suitably and must be able to operate independently from the air in the room ATTENTION Only mount the appliance on a closed wall made of non flammable materi al flat vert...

Страница 17: ...to failure to comply with the instruction above As well as the appliance the packaging contains A DOCUMENTATION ENVELOPE User operating instructions booklet Instruction booklet for the installer and m...

Страница 18: ...not be made of flammable material Since the temperature of the wall on which the boil er is installed and the temperature of the coaxial exhaust pipe do not exceed in normal operating conditions a roo...

Страница 19: ...L I S H Installation Instructions 33 702 420 61 70 79 43 51 56 60 4 C F G R M 135 125 80 80 100 80 765 125 125 bar bar service service bar bar Reset MAX M I N MAX MIN 3 5 1 REFERENCES FOR BOILER POSI...

Страница 20: ...tputs 80 kit b hydraulic outlets reference for installation with horizontal pipe kit 00362527 SVS Scond 250 distance from safety relief valve wall condensate drain 1 3 4 5 S A1 A2 2 WARNING Fit gasket...

Страница 21: ...f LT repor ted at values of bends terminals extensions you get the value if 0 OK POSSIBLE configuration if 0 NO WRONG configuration Please note these values relate to exhausts made by means of rigid p...

Страница 22: ...bustion products evacuation pipes These pipes can discharge into areas with different pressure C 43 3 x C 43 3 Collective chimney flue system consisting of two pipes one for combustion air intake and...

Страница 23: ...evacuation pipe outside the room the combustion air is tak en directly from the room where the appliance is installed ATTENTION 50 smoke exhaust only for type B23P type and C53 C 83 3 x C 83 3 Connect...

Страница 24: ...ucts are watertight C 10 3 x C 10 3 Slope towards the entrance 3 Lmin Lmax Minimum and maximum LENGTH at the flue entrance COAXIAL 60 100 DOUBLE 80 FROM m TO m FROM m TO m 0 5 0 5 4 5 4 5 COAXIAL 80 1...

Страница 25: ...stion characteri stics The number of devices that can be connected to a collective flue in positive pressure is defined by the designer of the flue The boiler is designed to be connected to a collecti...

Страница 26: ...r and collar 3 contained in coaxial fumes kit as indicated Attention The air closure cap T must always be mounted on the air inlet hole 80 A1 or A2 GENERAL INFORMATION ON THE FLUE GAS EXHAUST SYSTEM C...

Страница 27: ...double 80 00364891 00364817 S A1 A2 T 1 For split systems DO NOT USE THE INTAKE EXHAUSTADAPTER 2 supplied with the boiler Use split system adapters as indicated Attention The air closure cap T d must...

Страница 28: ...xhaust pipes The supplier will have no contractual or extra contractual liability for damage caused due to incorrect installation and use and in any case failure to comply with the instructions provid...

Страница 29: ...y company Incorrect installation can cause damage to persons animals and objects for which the manufacturer cannot be held responsible If you smell gas a Do not operate electric switches the telephone...

Страница 30: ...30 3 5 4...

Страница 31: ...h the above instruction make sure that all the connections are watertight after commissioning the boiler see par 3 10 and bringing the system to the operating temperature stop the boiler and repeat th...

Страница 32: ...ELECTRICAL CONNECTIONS A3 4 32 1 6 5 SE TA 1 OT TA 2 WH WH Y Y BK BK TA ON OFF type of operation on electrical parts always disconnect electrical power and make sure that it cannot be reconnected acc...

Страница 33: ...is connection must be made up to standard as required the regulations in force Remember that a bipolar switch must be nstalled on the boiler power line with over 3 mm between contacts easy to access m...

Страница 34: ...rain trap been installed correctly as indicated in chapter 3 7 are any system shut off gate valves open does the gas to be used correspond to the boiler calibration gas otherwise perform the boiler co...

Страница 35: ...ion function stays active for 15 min utes To disable the CALIBRATION function before the time elapses switch the boiler on and off again by acting on the main switch 3 MINIMUM OUTPUT By turning the kn...

Страница 36: ...CO2 taken in the relevant hole 2 Take the measurements with the generator in steady state conditions see par 3 11 1 3 11 2 POSITIONING THE PROBES C PIPES 80 TYPE B23 1 2 1 B SEPARATE PIPES 2 1 2 A CO...

Страница 37: ...by turning with a screwdriver the screw R CLOCKWISE to increase it ANTICLOCKWISE to decrease it ADJUSTMENT SCREW MAXIMUM OUTPUT ADJUSTMENT SCREW MINIMUM OUTPUT Remove the cap and insert the CO2 analys...

Страница 38: ...gm n holes Dia phragm VG CO2 levels Levels O2 Con sumpt m3 h kg h Con sumpt m3 h kg h Start up power IG min max min max min max min max Nat gas G20 4 8 23 4 5 24 20 1300 5000 5 8 9 9 4 8 4 8 0 53 2 54...

Страница 39: ...WER TO THE HEATING SYSTEM E g X 24 to decrease the output of the boiler to 18 kW edit parameter HP about 68 Act on parameter HP par 4 2 parameters that can be edited from control panel to achieve the...

Страница 40: ...previously Vent and if necessary restore the heating pres sure until reaching a pressure of 0 8 1 0 bar Open the gas shut off valve Switch the boiler on Make sure the appliance is gas tight and water...

Страница 41: ...ock the boiler if the water pressure is below 0 4 bar Without request close the shut off valves of the heating circuit open the drain valve to make the water pressure decrease Before pressurising agai...

Страница 42: ...N Turn the HEATING knob B EDITING THE VALUE Turn the DOMESTIC HOT WATER knob C Il valore lampeggia sul display CONFIRM SELECTION Confirm the parameter to be edited by pressing the unblock key CONFIRM...

Страница 43: ...qualified personnel in compliance with the standards and regulations in force The manufacturer cannot be held liable for any damage resulting from a conversion operation that is incor rect or not perf...

Страница 44: ...mplete fill in the information required on the label supplied in the documentation envelope and apply it next to the technical data label of the boiler 4 3 1 Ending of gas transformation Close the ele...

Страница 45: ...OM 4 NO A1 4 3 21 8 76 5 9 4 A9 32 1 A2 4 32 1 76 5 A4 32 1 A3 4 32 1 6 5 1 2 A7 1 2 A5 3 4 5 6 A8 3 4 5 1 2 PK GND CASING BL PE PE TLC 4 5 WIRING DIAGRAM Practical connection board MVD MVD KEY A1 A9...

Страница 46: ...lace the external probe 14 1 RETURN PROBE Auxiliary SRR sensor inter rupted Check the wiring if needed re place the auxiliary sensor 22 30 2 SERVICE PARAMETERS Service parameters altered due to possib...

Страница 47: ...sure switch 16 10 EXCHANGER FREEZING 24 Exchanger freezing is detected If the heating sensor detects a temperature below 2 C burn er ignition is inhibited until the sensor detects a temperature above...

Страница 48: ...ode is working properly 4 11 16 PARASITE FLAME Flame detected upon ignition Check the wiring of the Ign Det electrode and remove any ox idation check for humidity be tween drain wire and ceramic if ne...

Страница 49: ...49...

Страница 50: ...50...

Страница 51: ...51...

Страница 52: ...p A www unical eu ORIGINAL INSTRUCTION 00338718EN 1 st ed 04 2024 Unical declines every responsibility for the possible inaccuracies if owed to errors of transcript or press Also reserves the right to...

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