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Immergas S.p.A. declines all liability due to printing or transcription errors, reserving the right to make any modifications to its technical and commercial 

documents without forewarning.

Dear Customer,

Our compliments for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time.

 

As an Immergas customer 

you can also count on a qualified after-sales service, prepared and updated to guarantee constant efficiency of your boiler. Read the following pages carefully: you 

will be able to draw useful suggestions regarding the correct use of the appliance, the respect of which, will confirm your satisfaction for the Immergas product.
Contact our area authorised after-sales centre as soon as possible to request commissioning. Our technician will verify the correct functioning conditions; he 

will perform the necessary calibrations and will demonstrate the correct use of the generator.
For assistance and scheduled maintenance contact Authorised Immergas After-Sales centres: they have original spare parts and are specifically trained directly 

by the manufacturer. 

General recommendations

All Immergas products are protected with suitable transport packaging.
The material must be stored in dry environments protected against bad weather.
The instruction book is an integral and essential part of the product and must be consigned to the new user also in the case of transfer or succession of ownership.
It must be stored with care and consulted carefully, as all of the warnings provide important safety indications for installation, use and maintenance stages.
This instructions manual provides technical information for installing Immergas boilers. As for the other issues related to boiler installation (e.g. safety in the work 

site, environment protection, injury prevention), it is necessary to comply with the provisions specified in the regulations in force and principles of good practice.
In compliance with legislation in force, the systems must be designed by qualified professionals, within the dimensional limits established by the Law. Installation 

and maintenance must be performed in compliance with the regulations in force, according to the manufacturer's instructions and by professionally qualified 

staff, intending staff with specific technical skills in the plant sector, as envisioned by the Law.
Improper installation or assembly of the Immergas appliance and/or components, accessories, kit and devices can cause unexpected problems to people, animals 

and objects. Read the instructions provided with the product carefully to ensure a proper installation.
Maintenance must be carried out by skilled technical staff. The Immergas Authorised After-sales Service represents a guarantee of qualifications and 

professionalism.
The appliance must only be destined for the use for which it has been expressly declared. Any other use will be considered improper and therefore potentially 

dangerous.
If errors occur during installation, operation and maintenance, due to non compliance with technical laws in force, standards or instructions contained in this 

book (or however supplied by the manufacturer), the manufacturer is excluded from any contractual and extra-contractual liability for any damages and the 

appliance warranty is invalidated.
For further information regarding legislative and statutory provisions relative to the installation of gas heat generators, consult the Immergas site at the 

following address: www.immergas.com

Summary of Contents for NIKE MYTHOS 24 2 E

Page 1: ...NIKE MYTHOS 24 2 E IE Instruction and warning book 1 038789ENG ...

Page 2: ... technical information for installing Immergas boilers As for the other issues related to boiler installation e g safety in the work site environment protection injury prevention it is necessary to comply with the provisions specified in the regulations in force and principles of good practice In compliance with legislation in force the systems must be designed by qualified professionals within th...

Page 3: ...ing 11 2 6 Restoring central heating system pressure 11 2 7 System draining 11 2 8 Anti freeze protection 12 2 9 Case cleaning 12 2 10 Decommissioning 12 3 Boiler commissioning initial check 13 3 1 Hydraulic diagram 13 3 2 Wiring diagram 14 3 3 Troubleshooting 14 3 4 Converting the boiler to other types of gas 15 3 5 Checks following conversion to another type of gas 15 3 6 Possible adjustments 15...

Page 4: ...of malfunctions faults or incorrect operation turn the appliance off immediately and contact an authorised company e g the Immergas Technical Assistance centre which has specifically trained staff and original spare parts Do not attempt to modify or repair the appliance alone Failure to comply with the above implies personal responsibility and invalidates the warranty Installation regulations thes...

Page 5: ... gas cock connection by following the mounting instructions illustrated in the figure The gas supply pipe must be suitably dimensioned according to current regulations in order to guarantee correct gas flow to the burnereveninconditionsofmaximumgenerator output and to guarantee appliance efficiency technical specifications The coupling system must conform to standards Fuel gas quality The applianc...

Page 6: ... 1 4 REMOTE CONTROLS AND ROOM CHRONO THERMOSTATS OPTIONAL The boiler is prepared for the application of room chrono thermostats or remote controls which are available as optional kits Fig 1 4 All Immergas chrono thermostats are connected with 2 wires only Carefully read the user and assembly instructions contained in the accessory kit On Offdigitalchrono thermostat Thechrono thermostat allows set ...

Page 7: ...responding to the top of the chimney flue independently of any caps must be out of the backflow area in order to prevent the formation of counter pressures that impede the free discharge of the combustion products into the atmosphere It is therefore necessary to use the minimum heights indicated in the figures stated in the regulation depending on the slope of the roof Direct exhaust outside The n...

Page 8: ...p on first speed To ensure optimal boiler operation in the case of new systems single pipe and module it is recommended to use the pump at maximum speed The circulation pump is already fitted with a capacitor Pump release If after a prolonged period of inactivity the circulation pump is blocked unscrew the front cap and turn the motor shaft using a screwdriver Take great care during this operation...

Page 9: ... 5 Gas valve 6 System filling valve 7 Flue safety thermostat 8 Primary heat exchanger 9 Delivery probe 10 Safety thermostat 11 Combustion chamber 12 Ignition and detection electrodes 13 System expansion vessel 14 Burner 15 Vent valve 16 By pass 17 DHW heat exchanger 18 Three way valve motorised 19 3 bar safety valve 20 System draining valve N B connection group optional ...

Page 10: ... or other devices Never clean the appliance or connected parts with easily flammable substances Never leave containers or flammable substances in the same environment as the appliance It is prohibited and dangerous to obstruct the air intake even partially for the ventilation of the room in which the boiler is installed Due to the danger functioning is also prohibited in the same room as suction d...

Page 11: ... hours code 03 it is necessary to reset the boiler manually by pressing the Reset button 1 If this anomaly persists contact a qualified technician for assistance e g Immergas After Sales Service Electro mechanical contacts This occurs when thesafetythermostat thefumepressureswitchor the system pressure switch do not work properly code 04 The boiler does not start try resetting the boiler If the an...

Page 12: ... a prolonged absence the system must be drained completely or antifreeze substances must be added to the heating system water In both cases the boiler domestic hot wa ter circuit must be drained In systems that are drained frequently filling must be carried out with suitably treated water to eliminate hardness that can cause lime scale 2 9 CASE CLEANING Use damp cloths and neutral detergent to cle...

Page 13: ...iance e g a draught gauge positioned at the exit of the appliance combustion products check that there is no backflow of combustion products into the room even during functioning of fans 3 1 HYDRAULIC DIAGRAM Fig 3 1 ensure activation of all adjustment devices seal the gas flow rate regulation devices if settings are modified check the production of domestic hot water check sealing efficiency of w...

Page 14: ...ermostat It can depend on the lack of water in the boiler little water circulation in the system or blocked pump Check on the manometer that the system pressure is within established limits Check that the radiator valves are not closed and also the functionality of the pump The boiler produces condensate This can be caused by obstructions of the chimney or flues with height or section not proporti...

Page 15: ...se direction the heating potential increases and in an anti clockwise direction it decreases Adjust the boiler minimum heat output in the domestic hot water phase Fig 3 3 N B only proceed after having calibrated the nominal pressure Adjustment of the minimum thermal input is obtained by operating on the cross plastic screws 2 on the gas valve maintaining the brass nut blocked 3 disconnect the powe...

Page 16: ... boiler 2 monothermal boiler with boiler P9 3 8 AUTOMATIC SLOW IGNITION FUNCTION WITH TIMED RAMP DELIVERY In the ignition phase the P C B carries out an increasing gas delivery ramp with pressure values that depend on the type of gas selected with preset duration This prevents every calibration or precision adjustment of the boiler ignition phase in any conditions of use 3 9 CHIMNEY SWEEP FUNCTION...

Page 17: ...ing can be completely removed as follows Fig 3 4 remove the frame 1 holding the edges and pulling it towards you as indicated by the arrows undo the 2 front screws 2 and the 2 lower screws 3 which fasten the casing 4 pull the casing 4 towards yourself and upwards at the same time in order to detach it from the upper hooks ...

Page 18: ... be inside the fairleads there must be no traces of blackening or burning N B when performing periodical maintenance of the appliance it is also good practice to check and perform maintenance on the heating system in compliance with that indicated by the regulations in force N B gas flow rates refer to heating power below a temperature of 15 C and pressure of 1013 mbar Burner pressure values refer...

Page 19: ...justable central heating temperature C 38 85 System expansion vessel total volume l 4 2 Expansion vessel factory set pressure bar 1 Water content in generator l 1 9 Head available with 1000 l h flow rate kPa m H2 O 24 5 2 5 Hot water production useful heat output kW kcal h 23 6 20296 Domestic hot water adjustable temperature C 30 38 60 77 Domestic hot water circuit flow limiter at 2 bar l min 7 7 ...

Page 20: ...ode Sr N Serial Number CHK Check Cod PIN PIN code Type Type of installation ref CEN TR 1749 Qnw min Minimum heating capacity domestic Qn min Minimum heating capacity heating Qnw max Maximum heating capacity domestic Qn max Maximum heating capacity heating Pn min Minimum heat output Pn max Maximum heat output PMS Maximum pressure system PMW Maximum pressure domestic D Specific flow rate TM Maximum ...

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Page 24: ...immergas com Immergas S p A 42041 Brescello RE Italy Tel 0522 689011 Fax 0522 680617 Certified company ISO 9001 This instruction booklet is made of ecological paper Cod 1 038789ENG rev ST 002138 000 07 15 Inglese per IRLANDA IE ...

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