Immergas HERCULES 25 Instructions And Recommendations
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Immergas HERCULES 25 Instructions And Recommendations

Immergas HERCULES 25 Instructions And Recommendations

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HERCULES
25/35
IE
Instructions and recom-
mendations
Installer
User
Maintenance technician
Technical Data

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Summary of Contents for Immergas HERCULES 25

  • Page 1 HERCULES 25/35 Instructions and recom- mendations Installer User Maintenance technician Technical Data...

  • Page 2: Table Of Contents

    External temperature probe (Optional)..............................23 1.10 Temperature control setting ..................................24 1.11 General examples of types of installation of flue systems ........................25 1.12 Immergas flue systems ....................................27 1.13 Equivalent lengths of "Green Range" flue system components......................29 1.14 Maximum flue length ....................................35 1.15 Installation of boiler type B with open chamber and fan assisted (optional).
  • Page 3 4.2 Combustion parameters ..................................157 4.3 Technical data table ....................................159 Technical parameters for combination boilers (in compliance with Regulation 813/2013) .............160 4.5 Product fiche (in compliance with Regulation 811/2013) ........................162 Parameters for filling in the package fiche .............................164 ST.008793/000 HERCULES 25/35...

  • Page 4: Dear Customer

    Dear Customer Congratulations for having chosen a top-quality Immergas product, able to assure well-being and safety for a long period of time. As an Im- mergas customer you can also count on a Qualified Authorised After-Sales Technical Assistance Centre, prepared and updated to guarantee constant efficiency of your appliance.

  • Page 5: General Recommendations

    Law. • Improper installation or assembly of the Immergas device and/or components, accessories, kits and devices can cause unex- pected problems for people, animals and objects. Read the instructions provided with the product carefully to ensure proper installation.

  • Page 6: Safety Symbols Used

    The symbol identifies the appliance’s earth terminal connection point. DISPOSAL WARNING The user must not dispose of the appliance at the end of its service life as municipal waste, but send it to appropriate collection centres. PERSONAL PROTECTIVE EQUIPMENT SAFETY GLOVES EYE PROTECTION SAFETY FOOTWEAR ST.008793/000 HERCULES 25/35...

  • Page 7: Unit Installation

    In the event the unit is installed in damp places, one must provide an insulation system underneath it, to insulate it from the ground. The place of installation of the appliance and relative Immergas accessories must have suitable features (technical and structur- al), such as to allow for (always in safe, efficient and comfortable conditions): - installation (according to the provisions of technical legislation and technical regulations);...
  • Page 8 (for example: garages, closed parking stalls), and in potentially dangerous places. Do not install in places/rooms that constitute public areas of apartment buildings, internal stairways or other escape routes (e.g. floor landings, entrance halls, etc.). ST.008793/000 HERCULES 25/35...
  • Page 9 These appliances are used to heat water to below boiling temperature in atmospheric pressure. They must be connected to a central heating system and domestic hot water circuit suited to their performance and capacity. ST.008793/000 HERCULES 25/35...
  • Page 10 “Anti-legionella” thermal treatment of the accumulation storage tank. "Anti-Legionella" heat treatment of the Immergas storage tank (can be activated both from the boiler panel and from the exter- nal temperature control systems provided). During this phase, the temperature of the water inside the tank exceeds 60°C with the subsequent risk of burns.
  • Page 11 Install the appliances in B and B configuration in non-residential premises and which are permanently ventilated. Failure to comply with the above implies personal responsibility and invalidates the warranty. ST.008793/000 HERCULES 25/35...

  • Page 12: Data Nameplate And Installation Information Sticker

    DATA NAMEPLATE AND INSTALLATION INFORMATION STICKER 1.2.1 Data nameplate positioning ST.008793/000 HERCULES 25/35...

  • Page 13: Key For Data Nameplate

    Logos and markings Gas categories and countries of destination 6(*) Specific information for Belgium Factory calibration 8(*) Hydrogen ready Type of appliance (*) = if present. The technical data are provided on the data plate on the appliance. ST.008793/000 HERCULES 25/35...

  • Page 14: Installation Information Sticker

    At the time of installation, the authorised technician must fill in the facsimile of the installation information sticker (Fig. 3) with the information indicated. This sticker is inside the warranty group, it must also be filled out and applied on the outside of the appliance (in visible position) (see paragraph 3.2 Initial check). ST.008793/000 HERCULES 25/35...

  • Page 15: Main Dimensions

    2 system return (Optional) MZ2 - G 3/4" direct zone 2 system flow (Optional) - G 1" mixed zone 2 system flow (Optional) G 3/4" direct zone 1 system return MZ1 - 3/4" direct zone 1 system flow ST.008793/000 HERCULES 25/35...

  • Page 16: Minimum Installation Distances

    MINIMUM INSTALLATION DISTANCES Key (Fig. 5): 450 mm 350 mm 30 mm 300 mm 10 mm ST.008793/000 HERCULES 25/35...

  • Page 17: Gas Connection

    (i.e. downstream from the pipes connecting the system to the appliance), according to the manufacturer’s instructions. The Immergas connection unit, supplied as an optional kit, also includes the gas isolation valve, whose installation instructions are provided in the kit.

  • Page 18: Hydraulic Connection

    In order to meet the system requirements established by EN 1717 in terms of pollution of drinking water, we recommend installing the IMMERGAS anti-backflow kit to be used upstream of the cold water inlet connection of the appliance. We also recommend using cate- gory 2 heat transfer fluid (e.g.: water+ glycol) in the appliance's primary circuit (C.H.

  • Page 19: Electrical Connection

    Also ensure that the electrical installation corresponds to maximum absorbed power specifications as shown on the appliance data nameplate. The boilers are supplied complete with a "Y" type H 05 VVF 3 x 0.75 mm power supply cable, without plug. ST.008793/000 HERCULES 25/35...
  • Page 20 55°C. Execute connection to terminal boards 14 and 15, eliminating jumper X70 (Fig.63). To position the thermostat on the system flow pipe on the appliance, see the kit’s instruction sheet. ST.008793/000 HERCULES 25/35...

  • Page 21: Remote Controls And Room Chrono-Thermostats (Optional)

    REMOTE CONTROLS AND ROOM CHRONO-THERMOSTATS (OPTIONAL) The appliance is set up for room chrono-thermostats or remote controls, available as optional kits. All Immergas chrono-thermostats are connected with 2 wires only. Carefully read the user and assembly instructions contained in the accessory kit.
  • Page 22 This type of dialogue is recommended for commercial remote devices, other than CAR . The remote control will remain in control of the “Operating mode”, “Set Central heating / C.H.” and “Central heating / C.H. demand”. - Remote control = 2: not used on this model. ST.008793/000 HERCULES 25/35...

  • Page 23: External Temperature Probe (Optional)

    The external probe always operates when connected, regardless of the presence or type of room chrono-thermostat used and can work in combination with Immergas chrono-thermostats. If wireless room probes are used, it is possible to activate or deactivate the action of the external probe for each individual zone in use, by acting on the parameter in the zone menu.

  • Page 24: Temperature Control Setting

    = NO Key (Fig. 9, 10) External temperature Flow temperature Maximum flow set Minimum flow set* Minimum external temperature* Maximum external temperature * Climatic curve offset * Functions reserved for Service ST.008793/000 HERCULES 25/35...

  • Page 25: General Examples Of Types Of Installation Of Flue Systems

    A second pipe is provided for the intake of combustion air from outside. Appliance connected, through a ducted exhaust pipe, to a vertical terminal. The exhaust pipe, by means of the cavity, also acts as a combustion air intake pipe. ST.008793/000 HERCULES 25/35...
  • Page 26 (15) wind conditions. The appliance is equipped with a fan upstream of the combustion circuit. ST.008793/000 HERCULES 25/35...

  • Page 27: Immergas Flue Systems

    These solutions form an integral part of the product. The appliance must be installed with an original Immergas "Green Range" inspectionable air intake system and flue gas extrac- tion system made of plastic, with the exception of configuration C in the configurations envisaged in Parag.
  • Page 28 When installing horizontal pipes, a minimum inclination of 5% towards the appliance must be maintained, and a section clamp with plug must be installed every 3 metres. ST.008793/000 HERCULES 25/35...

  • Page 29: Equivalent Lengths Of "Green Range" Flue System Components

    1,70 concentric m 1 The values of the equivalent lengths in metres of concentric pipe of the Ø60/100 terminals are not the actual ones, but are weighted values to be used for the calculation of the flue. ST.008793/000 HERCULES 25/35...
  • Page 30 Ø 80 Intake 1,80 Vertical exhaust terminal Ø Exhaust 3,00 80 m 1 Vertical exhaust terminal Ø Exhaust 3,00 80 stainless steel Intake stub pipe Ø 80 Intake 4,30 Thermoformed intake kit Intake 4,00 with configuration B ST.008793/000 HERCULES 25/35...
  • Page 31 Concentric pipe 80/125 Ø m 0,20 90° concentric bend 80/125 0,30 80/125 Ø Concentric bend 45° Ø 0,20 80/125 Concentric pipe Ø 60/100 m 0,60 Ø 60/100 90° concentric 0,80 60/100 elbow Concentric elbow 45° Ø 0,60 60/100 ST.008793/000 HERCULES 25/35...
  • Page 32 Intake 0,30 Exhaust 0,80 Ø 80 90° bend Intake 0,60 Exhaust 0,50 Ø 80 45° bend Intake 0,40 Concentric pipe Ø 60/100 m 2,00 Ø 60/100 90° concentric 2,50 60/100 elbow Concentric elbow 45° Ø 2,00 60/100 ST.008793/000 HERCULES 25/35...
  • Page 33 Male flexible adapter Exhaust 0,40 0,15 Ø 80 Female flexible Exhaust 0,60 0,20 adapter Ø 80 Flexible adapter/hose Exhaust 0,80 0,30 Ø 80 Vertical terminal Ø 80 Exhaust 1,90 0,70 Vertical exhaust Exhaust 2,00 0,80 terminal Ø 80 ST.008793/000 HERCULES 25/35...
  • Page 34 90° concentric bend 2,50 0,90 80/125 80/125 Ø Concentric bend 45° Ø 1,80 0,70 80/125 Concentric pipe Ø 2,50 1,30 60/100 m 1 Ø 60/100 90° concen- 3,50 2,00 60/100 tric elbow Concentric elbow 45° 2,50 1,30 Ø 60/100 ST.008793/000 HERCULES 25/35...

  • Page 35: Maximum Flue Length

    "Length equivalent to m of pipe" in the table in par. 1.13, and check that the resulting sum is equal to or less than the maximum length (L max) indicated in par. 1.14. (L ≤ L max). Should L be higher than L max, consider using another type of flue. HERCULES 25 Type Installation...
  • Page 36 (10)3 (12)3 Ø 50 flexible Ø 60mm rigid Split 80/80 with intake by own terminal and exhaust in exposed or ducted Immergas pipe. Ø 80 flexible Ø 80mm rigid Ø 50 flexible Ø 60mm rigid Concentric 60/100 or 80/125 with exhaust in ducted pipe and intake (15)3 from technical slot.
  • Page 37 Complete horizontal concentric intake-exhaust terminal Ø 60/100 (do not consider when calculating the equivalent length) Equivalent length L max - Maximum length To calculate the flue length of other types of installations, follow the logic illustrated in this example. ST.008793/000 HERCULES 25/35...

  • Page 38: Installation Of Boiler Type B With Open Chamber And Fan Assisted (Optional)

    - installation of appliances in B or B configuration is recom- mended in non-residential premises and which are perma- nently ventilated. The following technical regulations in force must therefore be ad- hered to. ST.008793/000 HERCULES 25/35...

  • Page 39: Concentric Horizontal Kit Installation

    Extensions for horizontal kit Ø 60/100 (L = Equivalent length - L max = Maximum length) (Fig. 17). The maximum lengths ((L max) of the various flues that can be installed are given in the summary table in parag. 1.14. ST.008793/000 HERCULES 25/35...
  • Page 40 "Length equivalent to m of pipe" in the table in par. 1.13, and check that the resulting sum is equal to or less than the maximum length (L max) indicated in par. 1.14. (L ≤ L max). ST.008793/000 HERCULES 25/35...
  • Page 41 Extensions for horizontal kit Ø 80/125 (L = Equivalent length - L max = Maximum length) (Fig. 20). The maximum lengths ((L max) of the various flues that can be installed are given in the summary table in parag. 1.14. ST.008793/000 HERCULES 25/35...
  • Page 42 "Length equivalent to m of pipe" in the table in par. 1.13, and check that the resulting sum is equal to or less than the maximum length (L max) indicated in par. 1.14. (L ≤ L max). ST.008793/000 HERCULES 25/35...

  • Page 43: Concentric Vertical Kit Installation

    The kit includes (Fig. 22): N°1 Gasket (1) N°1 Female concentric flange (2) N°1 Wall sealing plate (3) N°1 Aluminium slate (4) N°1 Concentric intake/exhaust pipe Ø 60/100 (5) N°1 Fixed half-shell (6) N°1 Mobile half-shell (7) ST.008793/000 HERCULES 25/35...
  • Page 44 "Length equivalent to m of pipe" in the table in par. 1.13, and check that the resulting sum is equal to or less than the maximum length (L max) indicated in par. 1.14. (L ≤ L max). ST.008793/000 HERCULES 25/35...
  • Page 45 Extensions for vertical kit Ø 80/125 (L = Equivalent length - L max = Maximum length) (Fig. 26). The maximum lengths ((L max) of the various flues that can be installed are given in the summary table in parag. 1.14. ST.008793/000 HERCULES 25/35...
  • Page 46 "Length equivalent to m of pipe" in the table in par. 1.13, and check that the resulting sum is equal to or less than the maximum length (L max) indicated in par. 1.14. (L ≤ L max). ST.008793/000 HERCULES 25/35...

  • Page 47: Separator Kit Installation

    N°1 Intake terminal Ø 80 (6) N°2 Internal wall sealing plates (7) N°1 External wall sealing plate (8) N°1 Exhaust pipe Ø 80 (9) For technical data concerning the C configuration, please refer to the table in par. 4.2. ST.008793/000 HERCULES 25/35...
  • Page 48 80mm Ø80/80 90° elbow L = TA + L1 + C2 + C1 + L0 The maximum lengths ((L max) of the various flues that can be installed are given in the summary table in parag. 1.14. ST.008793/000 HERCULES 25/35...
  • Page 49 "Length equivalent to m of pipe" in the table in par. 1.13, and check that the resulting sum is equal to or less than the maximum length (L max) indicated in par. 1.14. (L ≤ L max). The maximum length also includes the curve and the terminal. ST.008793/000 HERCULES 25/35...

  • Page 50: Adaptor Kit Installation C

    1.19 ADAPTOR KIT INSTALLATION C This kit allows an Immergas appliance to be installed in C configuration, with combustion air intake directly from the shaft where the flue gas exhaust is, obtained by means of a ducting system. System composition...

  • Page 51: Configuration Cconcentric Kit

    1.20 CONFIGURATION C CONCENTRIC KIT (15) Installation in C configuration of an Immergas appliance, (15) (15) makes it possible to intake combustion air directly from the shaft where the flue gas exhaust is present in the dedicated flue. Information for C...
  • Page 52 Maximum 2 changes of direction are allowed on the vertical section of the flue system with a maximum clearance angle of 30° with re- spect to the vertical. The maximum lengths ((L max) of the various flues that can be installed are given in the summary table in parag. 1.14. ST.008793/000 HERCULES 25/35...

  • Page 53: Configuration Cconcentric Kit (Ø 80/125)

    (Fig.36). Installation in C configuration of an Immergas appliance (only (10) (10) permitted with approved original flue, including the specific non-return valve), makes it possible to intake combustion air di- rectly from the shaft where the flue gas exhaust is present in the collective flue.
  • Page 54 Once all components have been assembled properly, the exhaust flue gas will be expelled in the collective flue, the combustion air for normal appliance operation will be aspirated directly by the shaft (Fig. C 35). Key (Fig. 38): Minimum slope 5% Equivalent length L max - Maximum length ST.008793/000 HERCULES 25/35...
  • Page 55 (kit Ø 80/125) Concentric gasket (15) Supplied separately (Fig. 39): The Ø 80/125 extension pipe kit includes: Extension pipe unit Ø 80/125 (10) No.1 Ducting kit door (A) The bend kit Ø 80/125 includes: Concentric bend Ø 80/125 at 87° (11) ST.008793/000 HERCULES 25/35...

  • Page 56: Separator Kit (Ø 80/80)

    C installations, the (10) (12) appliance flue exhaust must mandatorily be fitted with a flue gas non-return valve kit, consisting of the valve itself with instructions, specification and relative sticker with additional safety information (Fig.36). (10) (12) ST.008793/000 HERCULES 25/35...
  • Page 57 (5) up to the end stop, ensuring that the internal (7) and external (8) wall sealing plates are fitted. 8. Connect the Ø 80 drain pipe making sure to have already inserted the internal wall sealing plate (7) inside the end section of the pipe. ST.008793/000 HERCULES 25/35...
  • Page 58 No.1 Female exhaust flange (4) No.2 Bend 90° Ø 80 (5) The configuration on walls opposite the building is not allowed. No. 1 Extension Ø 80 (6) (only C (10) No. 1 Intake terminal Ø 80 (6) (only C (12) ST.008793/000 HERCULES 25/35...
  • Page 59 Ø80 90° elbow Intake Equivalent length Minimum slope 5% Lmax - Maximum length Exhaust Intake terminal Ø80 The maximum lengths ((L max) of the various flues that can be installed are given in the summary table in parag. 1.14. ST.008793/000 HERCULES 25/35...
  • Page 60 Furthermore, the safety sticker must be affixed on the front casing. This sticker is contained in the appropriate Kit C , which con- (10) (12) tains the additional exhaust flue gas non-return valve, necessary for the pressurised collective flues. It is advisable to affix the sticker in a clearly visible position on the front casing. ST.008793/000 HERCULES 25/35...
  • Page 61 Summary table of information for C installations (Only Methane 2H - 2H) HERCULES 25 Qmin Qn max Heat input 25,7 CO2% of reference Maximum boiler outlet pressure Minimum boiler outlet pressure C -200 -200 (10) Minimum boiler outlet pressure C...

  • Page 62: Ducting Of Flues Or Technical Slots

    Immergas ducting systems The Ø 60 rigid, Ø 50 and Ø 80 flexible and Ø80 rigid "Green Range" ducting systems must only be used for domestic use and with Immergas condensing boilers.

  • Page 63: Configuration For Cflue Installation

    1.24 CONFIGURATION FOR C FLUE INSTALLATION Appliance designed to be connected to a commercial exhaust/intake system. Hercules 25 Gas type Flue temperature at maximum output °C Flue gas mass at maximum power kg/h Flue temperature at minimum output °C Flue gas mass at minimum power kg/h at Q.

  • Page 64: Configuration Type B, Open Chamber And Fan Assisted For Indoors

    Chimney or flue sections for connection of the flue exhaust pipe must comply with requisites of technical standards in force. It is possible to replace a type C conventional device with one provided with condensation, connected to multiple flues, only if the deroga- tion conditions established by the regulations in force have been met. ST.008793/000 HERCULES 25/35...

  • Page 65: Flues, Chimneys And Chimney Caps

    In spaces closed on all sides with open tops (ventilation pits, courtyards etc.), direct combustion product exhaust is allowed for natural draught or fan assisted gas appliances with a heat input range from 4 to 35 kW, provided the conditions as per the current technical stand- ards are respected. ST.008793/000 HERCULES 25/35...

  • Page 66: Water Treatment Plant Filling

    The graph refers to the entire life cycle of the system. Therefore, also consider scheduled and unscheduled maintenance, which involves emptying and filling the said system. Key (Fig. 48): Total water hardness °F Litres of system water For quantities and methods of use of water-treatment products, refer to the instructions provided by their manufacturer. ST.008793/000 HERCULES 25/35...

  • Page 67: System Filling

    - open windows and doors; - avoid presence of sparks or naked flames; - bleed all air from pipelines; - ensure the internal system is properly sealed according to the specifications set forth by technical regulations in force. ST.008793/000 HERCULES 25/35...

  • Page 68: Appliance Start-Up (Ignition)

    12. ensure that the safety device intervenes in the event of gas supply failure and check the relative intervention time; 13. Check the activation of the main switch located upstream of the appliance and in the appliance. Even if just one single safety check provides a negative result, do not commission the system. ST.008793/000 HERCULES 25/35...

  • Page 69: Upm4 Circulation Pump

    If after a long period of inactivity, the circulator is blocked, adjust the screw in the centre of the head in order to manually release the mo- tor shaft. Take great care during this operation to avoid damage to the motor. ST.008793/000 HERCULES 25/35...

  • Page 70: Taco Circulation Pump

    (from a simple single-pipe to more modern and sophisticated systems) and always guar- antee optimum performance. The precise working point can be selected in the entire field of use by gradually adjusting the speed. ST.008793/000 HERCULES 25/35...
  • Page 71 - Remove the motor and clean the impeller. - When unblocked, reassemble the motor, tightening the screws at a torque of 3.3 ± 0.5 Nm. - Fill the primary circuit; restore boiler power and set the desired curve. ST.008793/000 HERCULES 25/35...
  • Page 72 Head available to the Hercules 25 system 1400 1800 2000 1000 1200 1600 Head available to the Hercules 35 system 1400 2000 1000 1200 1600 1800 Key (Fig. 51, 52): Key (Fig. 51, 52): = Head available to the system at maximum speed...

  • Page 73: Domestic Hot Water Storage Tank Unit

    Authorised Service Centre). The storage tank unit is prepared for introduction of the domestic hot water pump fitting. 1.36 KITS AVAILABLE ON REQUEST Check the complete list of kits available and which can be combined with the product, consult the Immergas website, the Im- mergas Price List or the technical-commercial documentation (catalogues and data sheets).

  • Page 74: Main Components

    Heat exchanger Condensate drain trap Vent valve Burner Polyphosphate dispenser (Op- Boiler pump Ignition/detection electrode tional) Motorised 3-way valve Spacer with clapet Storage tank draining valve System draining valve D.H.W. probe Solar probe (optional) Flue hood unit ST.008793/000 HERCULES 25/35...

  • Page 75: Instructions For Use And Maintenance

    In the event of malfunctions, faults or incorrect operation, turn the appliance off and contact an authorised company (e.g. the Authorised Technical Assistance Centre, which has specifically trained staff and original spare parts). Do not attempt to modify or repair the appliance alone. ST.008793/000 HERCULES 25/35...
  • Page 76 At the end of its service life, the appliance must not be disposed of like normal household waste nor abandoned in the environment, but must be removed by a professionally authorised com- pany as required by current legislation. Contact the manufacturer for disposal instructions. ST.008793/000 HERCULES 25/35...

  • Page 77: Cleaning And Maintenance

    “Set central heating / C.H.” knob. Zones area (number and information of zone in use). Selection confirmation/ok button. Operating mode. Menu button. Anomaly code/flow temperature display. Anomalies/esc. reset button. System general icon display. “Set DHW (Domestic hot water)” Knob. ST.008793/000 HERCULES 25/35...

  • Page 78: Using The Appliance

    Burner on with flame present (the bar at the side indicates a progressive increase of the power supplied by the burner). Not used on this model. Protection function Operating mode Description Central heating (Antifreeze...) Disabled Disabled Disabled Summer Enabled Disabled Activated Winter Enabled Enabled Activated Stand-by Disabled Disabled Activated ST.008793/000 HERCULES 25/35...

  • Page 79: Operating Mode

    In this mode the appliance allows the production of domestic hot water and ensures protection (Fig. 56). • Winter Press the “MODE” button in succession until the symbol appears. In this mode the system allows the production of domestic hot water and room central heating and ensures protection (Fig. 56). ST.008793/000 HERCULES 25/35...
  • Page 80 At the end of the modification, press “OK” to confirm the change and go back to the previously selected menu item. • Exit without saving If at the end of the modification you press “RESET”, you will return to the previously selected menu item without confirming the mod- ification. ST.008793/000 HERCULES 25/35...
  • Page 81 From this menu, it is possible to set the system's date and time as well as the time slots for operation in Comfort and Economy mode. • Date and time. The date and time can be set by modifying the parameters in the menu Clock and programs / Set date and time Set date and time 22:22 TIME MONTH 2020 YEAR ST.008793/000 HERCULES 25/35...
  • Page 82 Monday - Sunday Day(s) Calendar 8 10 12 14 16 18 20 22 24 On the menu Zone / Information it is possible to identify the status of the various controls managing the central heating / C.H.. ST.008793/000 HERCULES 25/35...
  • Page 83 The program does not take into account the setting time but ends at midnight on the last day set. The antifreeze function is still ensured during the holiday period. In case of blackout, the holiday program is cancelled. ST.008793/000 HERCULES 25/35...

  • Page 84: Dhw Mode

    If the anti-legionella function is activated (disabled as a standard), the temperature inside the storage tank is brought to 65°C for 30 min- utes. Water at temperatures above 50°C can cause severe burns. When the anti-legionella function is activated, always check the water temperature before any use. ST.008793/000 HERCULES 25/35...

  • Page 85: Central Heating Mode

    With the external probe connected, the flow setpoint for room central heating / C.H. is managed by the system depending on the external temperature measured (Par.1.9). It is possible to enable thermal adjustment for each individual zone. The symbol is present if the probe is connected and working. ST.008793/000 HERCULES 25/35...
  • Page 86 On the wireless probe there are two LEDs next to the button. The possible signals on these LEDs are the following: Status Situation Left LED Right LED Normal functioning 1 Flash every 60 seconds Normal No association 1 Flash every 4 seconds functioning RF transmission in progress 1 Flash ST.008793/000 HERCULES 25/35...
  • Page 87 Based on the outdoor temperature, the flow temperature calculation function will determine the maximum flow temperature for the zone (correlated to the temperature outside at that moment). The room probe can further decrease the value based on the rising of the room temperature. ST.008793/000 HERCULES 25/35...
  • Page 88 With multiple zones connected, acting on the appliance control panel central heating / C.H. adjustment knob will give direct access to the zone menu where it will be possible to choose the zone of interest and select the size to be varied (both flow temperature and room temperature). ST.008793/000 HERCULES 25/35...
  • Page 89 - if closed, it will go in combination with the appliance programming. • Central heating / C.H. set - info on the actual active set in real time (depends on the central heating / C.H. programming or any external probe). ST.008793/000 HERCULES 25/35...

  • Page 90: Parameters And Information Menu

    DHW program if "Set Management = Auto" is selected) Sets manual set (manual set will be active 24 hours a day if "Set Manage- Manual set 10 ÷ 60 °C 10°C ment = Man" is selected) (*) See the DHW paragraph (Parag.2.6). ST.008793/000 HERCULES 25/35...
  • Page 91 The following tables will appear the same also for any Zone 2 and Zone 3. ZONES/Zone 1 Menu item Description Information This displays the system operating data Settings Defines the operating parameters to manage zone 1 Configuration Defines any further operating parameters to manage zone 1 ST.008793/000 HERCULES 25/35...
  • Page 92 Zone board absent: the temperature read is the one to the boiler outlet Flow temperature 0°C ÷ 99°C Zones control unit present + information request relating to mixed zone: the temperature read is that at the mixing valve outlet. ST.008793/000 HERCULES 25/35...
  • Page 93 Defines the maximum flow temperature of central heating / C.H. sys- Maximum flow set 20°C ÷ 85°C 85°C tem operation (1) Not displayed when: - the external probe is missing - the parameter "Operation mode" is set at "Off" ST.008793/000 HERCULES 25/35...
  • Page 94 Defines the period during which the system disables both hot water Off - 1 ÷ 30 Holiday Program heating and room central heating functions. At the end of the set days, Day(s) the previously active functions will be reset. ST.008793/000 HERCULES 25/35...
  • Page 95 Boiler board sw version display Firmware version Display board sw version display MENU/Anomalies log Menu item Description Boiler Allows the selection of the boiler anomaly history. Room probe Allows the selection of the room probe anomaly history (if present). ST.008793/000 HERCULES 25/35...
  • Page 96 In case the user restores the factory conditions through "Menu/General settings/User factory settings", the menu will appear in Eng- lish. Proceed in the following way to restore the desired display language: - Enter Menu/General setting/Language. - Select the desired language from those available and press OK. ST.008793/000 HERCULES 25/35...

  • Page 97: Fault And Anomaly Signals

    (1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre) (2) The anomaly can only be verified in the list of errors in the “Information” menu (3) Error displayed only on CAR ST.008793/000 HERCULES 25/35...
  • Page 98 (1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre) (2) The anomaly can only be verified in the list of errors in the “Information” menu (3) Error displayed only on CAR ST.008793/000 HERCULES 25/35...
  • Page 99 (1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre) (2) The anomaly can only be verified in the list of errors in the “Information” menu (3) Error displayed only on CAR ST.008793/000 HERCULES 25/35...
  • Page 100 (1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre) (2) The anomaly can only be verified in the list of errors in the “Information” menu (3) Error displayed only on CAR ST.008793/000 HERCULES 25/35...
  • Page 101 (1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre) (2) The anomaly can only be verified in the list of errors in the “Information” menu (3) Error displayed only on CAR ST.008793/000 HERCULES 25/35...
  • Page 102 (1) If the shutdown or fault persists, contact an authorised company (e.g. Authorised Service Centre) (2) The anomaly can only be verified in the list of errors in the “Information” menu (3) Error displayed only on CAR (*) Errors visible below zone area icons. ST.008793/000 HERCULES 25/35...
  • Page 103 The reset of the error signal (following a solving operation) can take up to 10 minutes. It is recommended to “force” the commu- nication between the probe and concentrator by briefly pressing the probe button; in this way the RF communication between the two devices will be forced and the error signal will be quickly cancelled. ST.008793/000 HERCULES 25/35...

  • Page 104: Appliance Switch-Off

    - Cold water inlet valve - System filling valve 2.12 EMPTYING THE D.H.W. CIRCUIT To do this, always close the domestic cold water inlet upstream of the appliance. Open any domestic hot water tap to discharge the pressure from the circuit. ST.008793/000 HERCULES 25/35...

  • Page 105: Antifreeze Protection

    This function is displayed on the main screen from text: "De-aeration underway". During this period the DHW and CH functions are not active. It is possible to cancel the "Automatic vent" function by pressing the Reset button. ST.008793/000 HERCULES 25/35...

  • Page 106: Instructions For Maintenance And Initial Check

    The device’s warranty shall be rendered null and void if unapproved or unsuitable parts are used for maintenance or repairs. These will also compromise the product’s compliance, and the said product may no longer be valid and fail to meet the current regulations. in regard to the above, only use original Immergas spare parts when replacing components. ST.008793/000...

  • Page 107: Initial Check

    - ensure production of domestic hot water; - check the tightness of the hydraulic circuits; - check ventilation and/or aeration of the installation room where provided; Even if just one single safety check provides a negative result, do not commission the system. ST.008793/000 HERCULES 25/35...

  • Page 108: Yearly Appliance Check And Maintenance

    If the flue gas non-return valve in the flues must be removed to inspect and clean it, temporarily plug the exhaust pipe connected to the collective flue. This prevents the return of fumes from the other appliances connected to the flue itself. ST.008793/000 HERCULES 25/35...
  • Page 109 Hercules 25 Gas type to Nominal Q. to ignition Q. to Minimum Q. 8,8 (8,3 ÷ 9,3) % 8,8 (8,3 ÷ 9,3) % 8,8 (8,3 ÷ 9,3) % 10,3 (9,8 ÷ 10,8) % 10,7 (10,2 ÷ 11,2) % 10,0 (9,4 ÷ 10,4) % Gas type at Nominal Q.

  • Page 110: Hydraulic Diagram

    Air / gas manifold Domestic hot water expansion DHW (Domestic hot water) re- Ignition/detection/electrode vessel circulation Burner Flow limiter Return from solar panels (op- Double flue probe sensor Cold water inlet valve tional) Flow from solar panels (option- Condensate drain ST.008793/000 HERCULES 25/35...

  • Page 111: Wiring Diagrams

    TECHNICAL DATA MAINTENANCE TECHNICIAN USER INSTALLER...
  • Page 112 TECHNICAL DATA MAINTENANCE TECHNICIAN USER INSTALLER Key (Fig. 63): Colour code key (Fig. 63): Key (Fig. 63): Removable memory Black 230 Vac 50Hz Power supply Flow probe Blue 230 V connections B1-2 System flow probe Brown Low voltage connections D.H.W. probe Green Display board Return probe...
  • Page 113 TECHNICAL DATA MAINTENANCE TECHNICIAN USER INSTALLER...
  • Page 114 TECHNICAL DATA MAINTENANCE TECHNICIAN USER INSTALLER Key (Fig. 64): Colour code key (Fig. 64): Key (Fig. 64): Black 230 Vac 50Hz Power supply DIM BUS - possible connections, or else between them to: Blue 230 Vac power supply outlet for optional •...

  • Page 115: Removable Memory

    Dominus and timer maintenance. Should the display board be replaced, you can use the memory of the replaced board again so it is not necessary to reconfigure the appli- ance. Key (Fig. 66): Black removable memory (A19) ST.008793/000 HERCULES 25/35...

  • Page 116: Troubleshooting

    Contact After-Sales Assistance Service that has procedures to clean the D.H.W. changer. module or D.H.W. heat exchanger. Poor production of Contact the Authorised After-Sales Assistance Service that has DHW heat exchanger clogged. D.H.W. procedures to clean the D.H.W. heat exchanger. ST.008793/000 HERCULES 25/35...

  • Page 117: Access Reserved To Service

    To manually go back to User level, simply type the password following the procedure described above and set User again. If the appliance turns off and on again, the menu will automatically go back to User level. ST.008793/000 HERCULES 25/35...

  • Page 118: Converting The Appliance To Other Types Of Gas

    During installation and maintenance, do not use spray or liquids on the gas valve (electric connections side). Key (Fig. 67): Gas valve outlet pressure point Coil Wiring connector Gas valve inlet pressure point P. Ref. (Reference pressure) ST.008793/000 HERCULES 25/35...

  • Page 119: Calibration Type Involving The Replacement Of A Component

    Complete calibration with CO check Reset the parameters P.C.B. (New virgin P.C.B. without removable memory recovery) Complete calibration with CO check P.C.B. (Recovery of the removable memory with the boiler parameters No calibration required. set from the replaced board) ST.008793/000 HERCULES 25/35...

  • Page 120: Complete Calibration

    - Flame: indicates the presence of a flame (thus the ignition of the burner) The text indicating the circuit on which the energy produced is discharged appears at the bottom of the display (“CH underway” or “DHW underway”). ST.008793/000 HERCULES 25/35...
  • Page 121 (Par. 4.2), change the value, as described in the paragraph (Par. 3.12). When the combustion value measured on the nominal power is correct, request the advancement of the procedure to the next phase (in- termediate ignition power) by pressing the “OK” button “Calibration Phase Max Ok”. ST.008793/000 HERCULES 25/35...
  • Page 122 (Par. 4.2), change the value, as described in the paragraph (Par. 3.12). When the combustion value measured on the intermediate power is correct, request the advancement of the procedure to the next phase (minimum power) by pressing OK “Calibration Phase med Ok”. ST.008793/000 HERCULES 25/35...
  • Page 123 The end of the function is accompanied by the window “Calibration completed” If the message "Max Err" on the "Calibration Phase" item appears, it means that something was not successful during the cali- bration process. In which case, the operation must be repeated from the beginning. ST.008793/000 HERCULES 25/35...

  • Page 124: Co Adjustment

    “Ok” to confirm the new value. Wait for the text "Max Ok" "med Ok" or "Min Ok" to appear before checking the combustion linked to the new value based on the phase in which the change is made. ST.008793/000 HERCULES 25/35...

  • Page 125: Quick Calibration

    The end of the function is accompanied by the window “Calibration completed” If the message "Max Err" on the "Calibration Phase" item appears, it means that something was not successful during the cali- bration process. In which case, the operation must be repeated from the beginning. ST.008793/000 HERCULES 25/35...

  • Page 126: Flue Test

    The function ends after 15 minutes, or by selecting "Stop". Check the ΔP between two pressure tests (Par. 1.37) and set the parameter "Length Flue" according to the values below: Hercules 25 Menu - Support - Boiler - Flue Pressure <...

  • Page 127: Parameters And Information Menu

    DHW program if "Set Management = Auto" is selected) Sets manual set (manual set will be active 24 hours a day if "Set Manage- Manual set 10 ÷ 60 °C 10°C ment = Man" is selected) (*) See the DHW paragraph (Parag.2.6). ST.008793/000 HERCULES 25/35...
  • Page 128 Zone 1 Information Menu is always present regardless of whether or not a CAR is connected. (**) not displayed when the “Enable room probe” is set to No (***) displayed when the zone of interest is associated with a room probe (RF probe,...) ST.008793/000 HERCULES 25/35...
  • Page 129 - a room probe is configured (3) Not displayed when: - the parameter "Enable room sensor" is set at "Yes" - the parameter "Operation mode" is set at "Auto" or "Off" lack or unavailability of room probes ST.008793/000 HERCULES 25/35...
  • Page 130 20°C ÷ 85°C 85°C tem operation Defines the minimum central heating / C.H. system operation flow Minimum flow set temperature (if external probe is present, it will be correlated to the 20°C ÷ 85°C 20°C maximum outdoor temperature) ST.008793/000 HERCULES 25/35...
  • Page 131 Err = Association procedure failed No-Link = Probe cannot be reached via This displays the association status with wire- Status less probe (Parag. 3.18) … (in config) = Probe association in pro- gress Ok = Probe correctly associated ST.008793/000 HERCULES 25/35...
  • Page 132 Defines the period during which the system disables both hot water Off - 1 ÷ 30 Holiday program heating and room central heating functions. At the end of the set days, Day/s the previously active functions will be reset. ST.008793/000 HERCULES 25/35...
  • Page 133 This displays the number of days within which maintenance must be carried out. After the days or with the function de- Maintenance withing activated, the line is not displayed Main board rev. SW Boiler board sw version display Firmware version Display board sw version display ST.008793/000 HERCULES 25/35...
  • Page 134 Displays the room probe anomaly history (if present). The size of the anomaly history is equal to 10 anomalies and they Show alarm are displayed in decreasing order of appearance (no.1 is the most recent). The displayed anomalies are accompanied by the time and date of the anomaly being generated. Reset anomalies Resets the list of anomalies ST.008793/000 HERCULES 25/35...
  • Page 135 In case the user restores the factory conditions through "Menu/General settings/User factory settings", the menu will appear in Eng- lish. Proceed in the following way to restore the desired display language: - Enter Menu/General setting/Language. - Select the desired language from those available and press OK. ST.008793/000 HERCULES 25/35...
  • Page 136 Herc. = with domestic hot water pro- Hydraulic Defines the type of boiler hydraulics and central duction and central heating system heating system pump control pump control Herc. Sol.= not used on this model ST.008793/000 HERCULES 25/35...
  • Page 137 LG = operation with LPG gas NG = Methane AP = operation with Pro- pane Air gas Setting of minimum fan Hercules 25 = 2150 rpm Fan rpm min 450 - 3500 (rpm) speed (absolute) Hercules 35 = 2350 rpm...
  • Page 138 Set the preset parameters on the board software to allow installation in Enable Klapet valve No / Yes configuration C (10) (12) A change in these parameters will cause the appliance block signalled with E72; to reset E72, a quick calibration must be activated. ST.008793/000 HERCULES 25/35...
  • Page 139 Delta t = 0: head proportional to the power supplied by the burner This defines the type of speed control Delta t 15°C of the boiler pump in central heating Delta t = 5…25 : constant Delta t opera- tion (at the set value) ST.008793/000 HERCULES 25/35...
  • Page 140 60°C water) set limit available to user Anti-legion.cycle time: Sets the an- ti-legionella function intervention 00:00 ÷ 24:00 02:00 time Anti-legionella Anti-legion.cycle day: Sets the day(s) of activation of the anti-legionella func- None … All None tion ST.008793/000 HERCULES 25/35...
  • Page 141 Disable / Flow temp / Photovol. Flow temp probe IMG BUS: select this mode when con- necting an Immergas remote control (e.g. CARv2) to terminals 44-41 1: select this mode when a commercial Sets the dialogue protocol with remote remote is connected to terminals 44-...
  • Page 142 If the BMS is activated and these devices are present simultaneously, a conflict will be generated and will appear on the display with the text "Incompatible mode". * When the BMS parameter is selected, the parameters already set and ready to communicate with the Immergas system manager will appear and be visible in the following table:...
  • Page 143 MENU/Support/Special function/Fast calibration Menu item Description Range Activates the quick calibration function (Access to the calibration window Fast calibration with activation of the quick calibration command ST.008793/000 HERCULES 25/35...
  • Page 144 (to hours be added to the days of the previous item) MENU/Support/Maintenance Customised Menu item Description Range Default value Select number of months Sets the number of months for scheduled maintenance Off - 36 ST.008793/000 HERCULES 25/35...

  • Page 145: Replacing The Control Panel Keyboard

    5. Pulirand the surface (4) of the control panel by removing any residue of the double-sided adhesive. 6. Glue the new keyboard to the control panel by applying finger pressure along the entire perimeter of the keyboard. ST.008793/000 HERCULES 25/35...

  • Page 146: Specific Information For Correct Appliance Installation In Common Pressurised Flue Systems (C )

    Only then proceed to verify the components, making sure that the non-return valve siphon on the flue gas (on the exhaust) (Fig. 36) is full and replacing them if malfunctioning or damaged. ST.008793/000 HERCULES 25/35...

  • Page 147: Appliance Coupling With Wireless Room Probes

    - Status = - - : indicates the wait for configuration; if it is maintained for a long time during the association sequence, check the connec- tion between the concentrator and appliance. - Status = ...: indicates the mode of association in progress. - Status = Ok: indicates the correct association between the wireless probe and the zone to be controlled. ST.008793/000 HERCULES 25/35...

  • Page 148: Automatic Vent

    On the second line of the “Deaeration” page it is possible to activate the manual de-aeration by selecting “Deaeration = Start”. This function lasts 18 hours and it can be ended by setting "Deaeration = Stop" and by pressing the “Reset” button on the control panel. ST.008793/000 HERCULES 25/35...

  • Page 149: Chimney Sweep

    20 minutes after the last action on the buttons and/or encoder. With the function active, it is possible to return to the initial screen and then re-enter the Chimney sweeper window with a long press on the reset button, keeping the function always active. ST.008793/000 HERCULES 25/35...

  • Page 150: Screed Heater

    In case of failure, the function is suspended and will resume when normal operating conditions are reset from the point where it was in- terrupted. Key (Fig. 76): (A) - Top set (B) - Lower set (C) - Days ST.008793/000 HERCULES 25/35...

  • Page 151: Pump Anti-Block

    To drain the storage tank, use the relevant storage tank draining valve (Det. 29 Fig.54). Before performing this operation, close the boiler cold water inlet valve and open any DHW system hot water valve in order to allow the inlet of air into the storage tank. ST.008793/000 HERCULES 25/35...

  • Page 152: Casing Removal

    Front panel (Fig. 78) 4. Unscrew (d) the screws (5). 5. Remove (e) the cover caps (6) and unscrew (f) the screws (7). 6. Pull (g) the front panel (8) towards you and release it from its lower seat. ST.008793/000 HERCULES 25/35...
  • Page 153 8. Unscrew (i) the screw (10) in the top corner of the door (9). 9. Release the door (9) from the bracket just released from the screw (10) bending it outwards and sliding it off (j) of the lower pin (11). ST.008793/000 HERCULES 25/35...
  • Page 154 13. Remove the two casing sides (18 and 19) loosening the screws (20) (3 for each side). After that, push slightly up in order to release the side from its housing and pull it outwards (det. B). Part. B Part. A ST.008793/000 HERCULES 25/35...

  • Page 155: Technical Data

    The power data in the table has been obtained with intake-exhaust pipe measuring 0.5 m in length. Gas flow rates refer to net calorific value below a temperature of 15°C and at a pressure of 1013 mbar. Hercules 25 METHANE...
  • Page 156 14,1 3875 1,53 3675 1,13 13,0 12,6 3675 1,38 3475 1,01 11,0 10,6 3400 1,16 3225 0,85 3200 1,01 3050 0,74 3000 0,85 2875 0,62 2800 0,69 2675 0,50 2550 0,48 2425 0,35 2350 0,32 2250 0,23 ST.008793/000 HERCULES 25/35...

  • Page 157: Combustion Parameters

    COMBUSTION PARAMETERS Combustion parameters: measuring conditions of useful efficiency (flow temperature/return temperature= 80/60 °C), ambient temper- ature reference = 20 °C. Hercules 25 Gas type Supply pressure mbar 20,0 37,0 Gas nozzle diameter 5,00 5,00 Ignition fan speed 3800 3800...
  • Page 158 Nom./Min. Q. mg/kWh 22 / 15 34 / 25 Flue temperature at nominal output °C Flue temperature at minimum output °C Max air combustion temperature °C Maximum flue gas circuit temperature °C values refer to gas 20%H2NG ST.008793/000 HERCULES 25/35...

  • Page 159: Technical Data Table

    4.3 TECHNICAL DATA TABLE HERCULES 25 HERCULES 35 Domestic hot water nominal heat input 25,7 34,9 Central heating nominal heat input 20,8 29,0 Minimum heat input DHW nominal heat input with 20%H2NG gas 23,6 32,7 PoCentral heating nominal heat input with 20%H2NG gas...

  • Page 160: Technical Parameters For Combination Boilers (In Compliance With Regulation 813/2013)

    TECHNICAL PARAMETERS FOR COMBINATION BOILERS (IN COMPLIANCE WITH REGULATION 813/2013) The efficiencies and NO values in the following tables refer to the gross calorific value. Model HERCULES 25 Condensing Boiler Low temperature boiler Boiler type B1 Co-generation appliance for central heating...
  • Page 161 Annual gas consumption (*) High temperature mode means 60°C on return and 80°C on flow. (**) Low temperature mode for condensation Boilers means 30°C , for low temperature boilers 37°C and for other appliances 50°C of return temperature. ST.008793/000 HERCULES 25/35...

  • Page 162: Product Fiche (In Compliance With Regulation 811/2013)

    4.5 PRODUCT FICHE (IN COMPLIANCE WITH REGULATION 811/2013) Hercules 25 punto soluzioni srl "!! HERCULES 25 52 dB 2019 811/2013 Parameter Value Annual energy consumption for the central heating mode (QHE) Annual electricity consumption for the domestic hot water function (AEC) Annual fuel consumption for the domestic hot water function (AFC) Seasonal space heating energy efficiency (ηs)
  • Page 163 For proper installation of the appliance refer to chapter 1 of this booklet (for the installer) and current installation regulations. For proper maintenance refer to chapter 3 of this booklet (for the maintenance technician) and adhere to the frequencies and methods set out herein. ST.008793/000 HERCULES 25/35...

  • Page 164: Parameters For Filling In The Package Fiche

    Boiler and supplementary heat pump installed with low temperature heat emitters at 35 °C? FFrom the board of the heat ( 50 ‘II’ pump in the distribution system and the size of the products compared to the size and features of the building. ST.008793/000 HERCULES 25/35...
  • Page 165 Parameters for filling in the assembly chart Parameter HERCULES 25 HERCULES 35 "I" "II" "III" 1,32 0,95 "IV" 0,52 0,37 * to be established by means of table 5 of Regulation 811/2013 in case of “assembly” including a heat pump to integrate the boiler. In this case the boiler must be considered as the main appliance of the assembly.
  • Page 166 ≥ 85 % ≥ 131 % ≥ 170 % ≥ 213 % Colder: - 0.2 x Hotter: + 0.4 x in the distribution system and the size of the products compared to the size and features of the building. ST.008793/000 HERCULES 25/35...
  • Page 167 Parameters for filling in the DHW package fiche Parameter HERCULES 25 HERCULES 35 "I" "II" "III" * to be determined according to Regulation 811/2013 and transient calculation methods as per Notice of the European Community no. 207/2014. Domestic hot water production system package fiche.
  • Page 168 Immergas S.p.A. 42041 Brescello (RE) - Italy IMMERGAS SPA - ITALY Tel. 0522.689011 CERTIFIED COMPANY UNI EN ISO 9001:2015 immergas.com Design, manufacture and post-sale assistance of gas boilers, gas water heaters and related accessories This instruction booklet is made of...

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Hercules 353.0350633.035064

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