COSMOGAS MYDENS 24P Instructions For Installation, Use And Maintenance Manual
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COSMOGAS MYDENS 24P Instructions For Installation, Use And Maintenance Manual

Gas-fired wall-mounted condensing boiler
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GAS-FIRED WALL-MOUNTED
CONDENSING BOILER
INSTALLATION, USE
AND MAINTENANCE
MANUAL
MYDENS
62403580 - R04 01-10-2020_UK - INGHILTERRA - COSMOGAS

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Summary of Contents for COSMOGAS MYDENS 24P

  • Page 1 INSTALLATION, USE AND MAINTENANCE MANUAL MYDENS GAS-FIRED WALL-MOUNTED CONDENSING BOILER 62403580 - R04 01-10-2020_UK - INGHILTERRA - COSMOGAS...

  • Page 2: Table Of Contents

    6.8 - Adjusting the power in central heating mode (Range Rated) ....................44 6.9 - Adjusting the domestic hot water flow rate ..........................44 7 - USE ........................................45 7.1 - Checking the valve opening ..............................46 7.2 - Checking the central heating system pressure ........................46 MYDENS COSMOGAS...
  • Page 3 8.25 - Outdoor temperature sensor ..............................87 8.26 - Wiring diagram ..................................88 9 - TECHNICAL DATA ................................... 90 10 - COMMAND MENU DIAGRAM ............................... 92 11 - EU DECLARATION OF CONFORMITY ............................93 12 - PRODUCT FICHE ..................................94 MYDENS COSMOGAS...

  • Page 4: General Safety Warnings

    Any options or kits added later must be original Cosmogas products. WARNING!!! A water temperature higher than 51°C can also cause permanent damage to This appliance must be intended only for the use for people, animals and objects.

  • Page 5: National Installation Laws

    All the safety devices, auxiliary devices and the diameters of the electrical, hydraulic and gas pipes must always be checked by a qualified installer, to make sure they satisfy the applicable laws and regulations. MYDENS COSMOGAS...

  • Page 6: General Information

    MYDENS: Each individual part is proudly designed, manufactured, Gas-fired condensing boiler fitted with a full premix tested and assembled within the COSMOGAS facilities, burner. thus guaranteeing the best quality control. 2.2 - Manufacturer Boiler with maximum heat input of 14 Kw.

  • Page 7: Meaning Of Symbols Used

    - to maintain the level of environmental compatibility of the charge or retailers. combustion high. For this purpose, see section 8.2. Offer your customer a scheduled maintenance contract. MYDENS COSMOGAS...

  • Page 8: Main Components

    14 - Wall hang connections 31 - Control panel 15 - ---------- 32 - ---------- 16 - Air intake and flue gas exhaust ducts 54 - Primary heat exchanger temperature fuse 17 - Combustion analisys ports 55 - Flue gas temperature sensor MYDENS COSMOGAS...
  • Page 9 40 - Return central heating circuit drain valve 50 - Air/gas mixing unit 41 - Domestic hot water temperature sensor 51 - Burner 42 - System filling valve 52 - Drain pipe for any water coming from the combustion air pipe 53 - Ignition electrodes MYDENS COSMOGAS...

  • Page 10: Operation

    4 - OPERATION Figure 3 MYDENS 24P MYDENS 34P Figure 4 MYDENS 15B MYDENS 24B MYDENS 34B MYDENS COSMOGAS...
  • Page 11 45 - Safety valve 46 - Cold water 47 - Domestic hot water 48 - Tank 1002 49 - Tank temperature sensor (Par. 50 - Primary heat exchanger temperature fuse 1006 51 - Flue gas temperature sensor (Par. MYDENS COSMOGAS...

  • Page 12: Operation And Intended Use

    ON /OFF or two-step command. For further information regarding outdoor reset refer to section 7.10. Figure 6 Distances “A” and “B” must be assessed during installation so that rain does not reach the appliance directly. MYDENS COSMOGAS...

  • Page 13: Water Pressure Drops Curve

    (see graph where "ΔP" is pressure drops and "Q" drops curve the water flow). The installer or project technician must take this into consideration in order to guarantee the correct domestic hot water flow rate. RIC17 - 2012 13,3 16,6 Q (l/min) Figure 8 MYDENS COSMOGAS...

  • Page 14: Installation

    WARNING!!! The room where this appliance is installed must have a water collection and discharge point for any leakage. Figure 10 MYDENS COSMOGAS...

  • Page 15: Supply And Return

    A - If are not respected the guideline values ,indicated in the heating circuit must be repaired to prevent the problem. table of Figure 11; B - If the pH value of the heating water is less than 7,5 or more than 9,5. MYDENS COSMOGAS...
  • Page 16 - Fernox F1 - Fernox F2 - Sentinel X 100 - Sentinel X 200 Additives for frost protection intended to remain permanently in the installation - Maychem Mayline FS - Fernox Antifreeze Alphi 11 - Sentinel X 500 MYDENS COSMOGAS...

  • Page 17: Low-Temperature Systems

    WARNING!!! If the appliance is connected to a domestic hot water recirculation circuit, install a safety valve and an expansion tank of a suitable size for managing the natural increase in the volume of water during heating. MYDENS COSMOGAS...

  • Page 18: Condensate Drain Pipe

    “B” and “C” on tabs “D”; sections. It is prohibited to drain into gutters or rainwater drainpipes. WARNING!!! The condensate drain system must slope continuously towards the drain point; avoid high points, which could pressurise the pipe. MYDENS COSMOGAS...

  • Page 19: Safety Valve

    Ø 22 in the 34 model Once the hydraulic and gas connections have been made, proceed with assembly of the bottom cover “H” as indicated in Figure 15. The accessories, in some models, could be not supplied with the appliance. MYDENS COSMOGAS...

  • Page 20: Hydraulic Connections For Model -- B

    “B”; 4. - Before refitting the bottom cover, trim the entire part between walls “C” and “D”, from the outer edge to the central slot (only in the rear part), to allow the softener “B” to be housed; MYDENS COSMOGAS...

  • Page 21: Electrical Connections: Details

    L1 = Appliance power supply line; N = Appliance power supply neutral: EARTH SYMBOL = Earth contacts; 020025.01.009 Figure 18 21 20 19 18 17 16 15 14 13 12 11 10 9 8 0-10 Slave 020002.01.010 Figure 19 MYDENS COSMOGAS...

  • Page 22: Power Main Electrical Supply

    (see Figure 20). Figure 20 MYDENS COSMOGAS...

  • Page 23: Cr04 Remote Time Control (On Request)

    (section 7.10); 7. - An icon shows on the display to confirm that the outdoor temperature sensor has been enabled; 8. - Set the correct adjustment values for the supply temperature, according to the outdoor temperature (section 7.10.3); MYDENS COSMOGAS...

  • Page 24: 0-10 Vdc Type Dialogue

    2110 2024 - parameter has a greater value than parameter 2111 T.MAX T.MAX = Maximum supply temperature 2111 (Par. T.MIN = Minimum supply temperature T.MIN 2110 (Par. ("H") = ON/OFF hysteresis; (”H”) ch_mode_4_graph ON/OFF Figure 21 MYDENS COSMOGAS...

  • Page 25: Connection And Setting Of The Appliance In Cascade

    (Heat exchanger flow sensor); 2141 for 24 and 34 models = 1 for 60 model = 3,4 (Rated heat exchanger water flow rate); 4184 (Module logical address); 4147 at the value of the number of modules in cascade (MASTER included); MYDENS COSMOGAS...
  • Page 26 10 = S4 switch position on MASTER appliance; 4 = SLAVE appliance #4 until #8; 11 = S4 switch position on SLAVE appliances; 5 = Check valve; 12 = Connection to the next appliance; 6 = Bus A-LINK; 7 = General cascade temperature sensor; MYDENS COSMOGAS...

  • Page 27: Connecting The Appliance To A Tank With Coil

    11 - Hydraulic safety unit water. 12 - Supply to the central heating system 13 - Return from the central heating system 14 - Tank temperature sensor (standard for mod. “B” only) MYDENS COSMOGAS...

  • Page 28: Flue Exhaust And Air Intake Ducts

    WARNING!!! With installation type C53, the flue exhaust and air intake terminals cannot be installed on opposite walls of the building. - C63, the appliance can be fitted to type-approved exhaust and intake pipes made by other brands; Figure 25 MYDENS COSMOGAS...

  • Page 29: Type Of Intake/Exhaust B23 And B23P

    C - The adjacent room is not a bedroom; D - The adjacent room is not a communal part of the building; E - The adjacent room is not an environment with fire hazards such as hangars, garages, warehouses for combustible materials, etc.; MYDENS COSMOGAS...

  • Page 30: Split 80/80Pp" System (Polypropylene) (Type C43; C53; C83; C93)

    Figure 27 sheath. WARNING!!! If the air intake and flue exhaust terminals are positioned on the same wall, they must remain at a minimum distance of 1 metre. Figure 28 MYDENS COSMOGAS...

  • Page 31: Split 80/80Pp" System: Accessories Available

    62617249 - N°18 PP anti-slip bands for extensions 62617240 - N° 14 M.F. PP L=20m hose 62617241 - N° 16 spacer for hose 62617238 - N° 17 PP telescopic joint 62617242 - N° 15 PP T-fitting 62617246 - N° 13 M/F PP 45° bend MYDENS COSMOGAS...

  • Page 32: Split 80/80Pp" System: Installation Examples

    The air intake must slope towards the outside to prevent rain water entering. Exhaust on the outside, directly via the appliance ducts with condensate collection inside the appliance itself. The air intake must slope towards the outside to prevent rain water entering. Figure 30 Figure 29 MYDENS COSMOGAS...

  • Page 33: 60/100Pp Vertical Coaxial" System (Polypropylene) (Type C13; C33)

    9. Every 90° bend has a loss equivalent to the value in section 9. Every 45° bend has a loss equivalent to the value in section 9. Figure 32 Figure 33 MYDENS COSMOGAS...

  • Page 34: 60/100Pp Horizontal Coaxial" System (Polypropylene) (Type C13; C33)

    The flue exhaust/air intake system can be extended up to a maximum distance as indicated in section 9. Every 90° bend has a loss equivalent to the value in section 9. Every 45° bend has a loss equivalent to the value in section 9. Figure 35 MYDENS COSMOGAS...

  • Page 35: 60/100Pp Coaxial" System: Accessories Available

    62617234 - N° 1 M/F PP 90° coaxial bend 62617252 - N° 6 M/F PP 45° coaxial bend 62617231 - N° 7 L 1m PP coaxial extension 62617304 - N° 3 PP coaxial roof terminal 62617232 - N° 5 PP coaxial wall terminal MYDENS COSMOGAS...

  • Page 36: 60/100Pp Coaxial" System: Installation Examples

    5 - INSTALLATION 5.17.8 - “60/100PP Coaxial” system: installation examples When setting up a coaxial exhaust (Figure 36), whether vertical or horizontal, the exhaust duct must slope upwards so that the condensate flows into the appliance. Figure 36 MYDENS COSMOGAS...

  • Page 37: 80Pp Single" System (Polypropylene) (Type "B23" Or "B23P")

    (Figure 28). WARNING!!! The temperature of the exhaust pipe can reach 90°C during operation. If the pipe passes through walls that are sensitive to these temperatures, insert a protective heat-insulating sheath. Figure 38 MYDENS COSMOGAS...

  • Page 38: Start-Up

    6. - Restore the state of the appliance by reassembling everything in the reverse order to that used for the dismantling phases; WARNING!!! If the appliance remains off for more than 3 months, the siphon must be filled again as explained above. MYDENS COSMOGAS...

  • Page 39: Filling The Central Heating System

    (methane) of group H of the second family, at a supply pressure of 20 mbar. 3P-G31-37mbar LPG this means that the appliance is set to operate with G31 gas (propane, also known as LPG) of group P of the third family, at a supply pressure of 37 mbar. MYDENS COSMOGAS...

  • Page 40: Conversion Of The Appliance From One Type Of Gas To Another

    16. - Check for any gas leaks using the relevant tools; Figure 41 WARNING!!! Perform the gas leak test using a leak detection fluid only. The use of naked flames is prohibited. 020022.01.008 020002.01.042 Figure 42 Figure 43 MYDENS COSMOGAS...
  • Page 41 10,5 ± 0,3 9,5 ± 0,1 4,9 ± 0,2 6,4 ± 0,1 9,0 ± 0,3 8,5 ± 0,1 4,9 ± 0,2 5,8 ± 0,1 10,5 ± 0,3 10,0 ± 0,1 4,9 ± 0,2 5,6 ± 0,1 Figure 45 MYDENS COSMOGAS...

  • Page 42: Ignition

    15. - Close the pressure point “A” again as in Figure 46; 020002.01.023 16. - Check for any gas leaks at the pressure point using suitable tools; WARNING!!! Perform the gas leak test using a leak detection fluid only. The use of naked flames is prohibited. Figure 46 MYDENS COSMOGAS...

  • Page 43: Controlling The Level Of Co2 And Any Adjustments

    14. - Now the burner will operate at minimum power for 10 minutes; 15. - Wait for the CO2 measurement to stabilise; 16. - Compare the value measured with “CO2 minimum power” that given in the table in Figure 45; MYDENS COSMOGAS...

  • Page 44: Adjusting The Power In Central Heating Mode (Range Rated)

    5. - Wait 3 minutes for the temperature to stabilise; necessary APPLIANCE MODEL 6. - If the water temperature is too cold, the flow rate must (kW) be reduced using selector “A” (Figure 50), until the desired temperature is reached; 020002.01.016 Figure 50 Figure 49 MYDENS COSMOGAS...

  • Page 45: Use

    S - Key for reducing the temperature of the domestic hot water (below the minimum, the domestic hot water is set to OFF) or for scrolling through and changing the value of the parameters; T - On/off switch; U - Appliance in frost protection mode; MYDENS COSMOGAS...

  • Page 46: Checking The Valve Opening

    “A” (Figure 52must always remain in the closed position. If the pressure drops over time, restore the correct value. This operation may have to be repeated several times in the first month of operation to remove any air bubbles in the system. MYDENS COSMOGAS...

  • Page 47: Ignition Procedure

    40°C and 60°C. By pressing and holding the key down even below 40°C, the message appears to indicate that the domestic hot water service is being switched off, also switches off the icon “F” (Figure 51). MYDENS COSMOGAS...

  • Page 48: Central Heating

    (appropriate electrical system set- outdoor temperature drops below the temperature set under up required). 2025 parameter again. Small corrections can be made to 2109 the supply temperature via parameter , as shown in Figure 53. MYDENS COSMOGAS...

  • Page 49: Outdoor Reset

    - Large systems, with radiant panels (low temperature), where each area is controlled by its own room thermostat and the appliance pump is stopped only when all area thermostats are satisfied (appropriate electrical system set- up required). MYDENS COSMOGAS...

  • Page 50: Outdoor Reset: Precautions During Adjustment

    The recommended start value is 22°C. - It is also possible to set the minimum and maximum central heating temperatures using the respective 2023 2024 parameters in section 7.16. MYDENS COSMOGAS...

  • Page 51: Outdoor Reset: Adaptation To Different Climatic Areas

    When the outdoor temperature drops back below the some of the heat system loops have flow resistances that value set under this parameter, the central heating service are much higher than others. switches back on automatically. MYDENS COSMOGAS...
  • Page 52 = Minimum heating temperature setting; 2024 Par. = Maximum heating temperature setting; 2025 Par. = Heating stop spring temperature; 2109 Par. = Adjusting the line parallelism; T. C. (°C) = Calculated supply temperature (°C); T. E. (°C) = Outdoor temperature (°C); MYDENS COSMOGAS...

  • Page 53: Timers For The Various Functions

    During the summer, the pump switches on once every 24 hours for 15 seconds in order to prevent any deposits from blocking it. The diverter valve and thetank pump (if present) are activated at the same time for the same reason. MYDENS COSMOGAS...

  • Page 54: Access And Consultation Of User Profile Parameters

    0: Heating or DHW according to 0910 the service active at that time 1: Heating 2: DHW 3: N/A 4: Cascade Temperature 0997 Display icon test User 0998 Installer access code Factory Code 0000...9999 0300 0999 Factory access code Factory Code 0000...9999 MYDENS COSMOGAS...
  • Page 55 Total operating days (power supply to the User days appliance) 1059 Time between last two locks (Loc) User 1: mins 2: hours 3: days 4: weeks 1060 Time between last two errors (Err) User 1: mins 2: hours 3: days 4: weeks MYDENS COSMOGAS...
  • Page 56 Eg: If it shows 3:15, it means 15 days; Eg: If it shows 4:26, it means 26 weeks; (the display of the number 255 means that there has been no block or error). 2203 This parameter is only active if the parameter MYDENS COSMOGAS...

  • Page 57: Access And Setting Of The Installer Profile

    Maximum flue gas temperature Factory °C 10...120 2007 Heating positive hysteresis Factory °C 0...20 2009 Delay against frequent burner ignition Installer 10...900 2010 Temperature differential against frequent burner Installer °C 0...20 ignition 2012 Maximum differential heat exchanger temperature Factory °C 10...80 MYDENS COSMOGAS...
  • Page 58 Puffer fill delivery positive hysteresis Factory °C 0...20 2041 Puffer maintenance temperature (N/A) Factory °C 0...10 2042 DHW priority mode with puffer Installer 0 = Time (time set under paramater 2043); 1 = Heating priority; 2 = DHW priority; 3 = N/A; MYDENS COSMOGAS...
  • Page 59 Outdoor reset offset adjustment Installer °C OFF -10...10 (parameter 2001 = 1 or 2) 2110 Minimum heating temperature setting for 0-10V Installer °C 20...50 control (2001=4) 2111 Maximum heating temperature setting for 0-10V Installer °C 50...90 control (2001=4) MYDENS COSMOGAS...
  • Page 60 19 = N/A; 20 = Central heating in stand by; 2129 Domestic hot water flow rate sensor Installer 0 = Bitron; 1 = Huba DN8; 2 = Huba DN10; 3 = Huba DN15; 4 = Huba DN20; 5 = N/A; MYDENS COSMOGAS...
  • Page 61 2205 Frost protection Installer EnA = Enable; dIS = Disabled 2206 Anti-legionella Installer EnA = Enable; dIS = Disabled 2207 DHW detection delay Installer 0...255 N/A = Not applicable 15, 24 and 34 refer to the appliance model. MYDENS COSMOGAS...

  • Page 62: Parameters For Cascade Systems

    Power management 2 (parameter 4184) – Minimum Installer 0...100 power 4153 Power management 2 (parameter 4184) – Installer 0...100 hysteresis 4154 Cascade pump post-circulation Installer 0...255 4155 Cascade sensor frost protection temperature Installer °C 10...30 4184 Module logical address Installer 0...8 MYDENS COSMOGAS...

  • Page 63: Diagnostics

    Error code (for code key see section 7.17.2) operation by resolving the cause of the anomaly. Contact a qualified installer Anti-legionella function running (see Tank temperature ALEg section 5.16.1). It will end when the water in the tank reaches 60°C. Appliance maintenance request MYDENS COSMOGAS...

  • Page 64: Diagnostics: Locks "Loc

    Fan too fast for more than 60 seconds Check it is powered at 230 Vdc. If the fan is powered, it must be replaced. Otherwise, replace the control board. Loc 8 Software error on the control board Replace the control board. MYDENS COSMOGAS...
  • Page 65 Loc 19 Software error on the control board Replace the control board. Loc 20 Flame present 10 seconds after gas valve is Replace the gas valve or the control board. closed Loc 21 Flame present before ignition Replace the gas valve or the control board. MYDENS COSMOGAS...
  • Page 66 Replace the control board. Loc 31 Software error on the control board Replace the control board. Loc 32 Software error on the control board Replace the control board. Loc 33 Software error on the control board Replace the control board. MYDENS COSMOGAS...
  • Page 67 Replace the control board. Loc 37 Software error on the control board Replace the control board. Loc 38 Software error on the control board Replace the control board. Loc 39 Software error on the control board Replace the control board. MYDENS COSMOGAS...

  • Page 68: Diagnostics: Errors "Err

    - when the pressure drops below 0.6 bar must appear FILL; - when the pressure rises above 1.5 bar must disappear FILL. Check that there are no water leaks from If the system has a leak, it must be repaired. the central heating system. MYDENS COSMOGAS...
  • Page 69 If the sensor does not match, it must be open outdoor temperature sensor (1004) matches replaced. the graph in section 8.25 Check that the connection has been If the wires are not connected correctly, the connected correctly connections must be restored. MYDENS COSMOGAS...
  • Page 70 Replace the control board. Err 136 Software error on the control board Replace the control board. Err 137 Software error on the control board Replace the control board. Err 138 Software error on the control board Replace the control board. MYDENS COSMOGAS...
  • Page 71 - when the pressure rises above 1.5 bar must disappear FILL. Check that there are no water leaks from If the system has a leak, it must be repaired. the central heating system. Err 163 Software error on the control board Replace the control board. MYDENS COSMOGAS...
  • Page 72 Restore the correct connection to the display. Check the correct connection to the Restore the correct connection to the pressure sensor. pressure sensor. Check correct connection to the water flow Restore the correct connection to the water sensor. flow sensor. MYDENS COSMOGAS...

  • Page 73: Diagnostics: Alarms "Atte

    Where neither of the two previous cases apply, replace the control board. Check that it has been connected correctly. Restore the correct connection. AttE 206 Cascade temperature sensor error Replace the control board (contact open or shortcircuited) (N/A) MYDENS COSMOGAS...

  • Page 74: Maintenance

    WARNING!!! Before any maintenance work, disconnect the appliance from the electrical power supply, using the relevant switch nearby. WARNING!!! Close the gas valve before any maintenance work. MYDENS COSMOGAS...

  • Page 75: Maintenance Protocol

    3. - Visually check that the safety valve does not have any signs of corrosion, physical damage, water marks or signs of rust; 4. - In case of other damage indicated above proceed with replacing the component; MYDENS COSMOGAS...

  • Page 76: Checking The Condition Of The Safety And Control Devices

    1. - Check that after attempts to start the appliance, with the gas shut-off valve closed, the appliance goes into Loc 1 lockout mode and the message appears on the display; 2. - If the lock message does not appear, replace the control board; MYDENS COSMOGAS...

  • Page 77: Removing The Cover And Accessing The Internal Components

    2. - Open the control board “D” using closing mechanism “G”; To access the electrical connections board: 1. - turn the control board “D” towards the front; 2. - Slide cover “E” out using the closing flaps “F”; 020002.01.018 Figure 54 MYDENS COSMOGAS...

  • Page 78: Dismantling The Burner Fan Assembly

    WARNING!!! The gasket "M" of the Figure 56 ensures the combustion chamber is sealed. If the gasket is damaged DO NOT reuse it, it must be replaced along with the burner unit. Consult the manufacturer for information on replacing it. MYDENS COSMOGAS...

  • Page 79: Correctly Positioning The Ignition And Detection Electrodes

    7. - Switch on the appliance; 8. - Check for any gas leaks using the relevant tools; WARNING!!! Perform the gas leak test using a leak detection fluid only. The use of naked flames is prohibited. Figure 57 020025.01.004 Figure 58 MYDENS COSMOGAS...

  • Page 80: Dismantling And Replacing The Gas Valve

    9. - Switch on the appliance; 10. - Check for any gas leaks using the relevant tools; WARNING!!! Perform the gas leak test using a leak detection fluid only. The use of naked flames is prohibited. 020022.01.008 020025.01.040 020025.01.005 Figure 59 Figure 60 MYDENS COSMOGAS...

  • Page 81: Checking The Expansion Tank

    5. - Replace the tank; 6. - Restore the pressure in the central heating system (section 7.2); 7. - Restore the state of the appliance by reassembling everything in the reverse order to that used for the dismantling phases; 020002.01.025 Figure 61 MYDENS COSMOGAS...

  • Page 82: Cleaning The Condensate Conveyor Siphon

    Figure 62 “E” is put back in the relevant place and that end “G” is correctly positioned correctly in “H”; 10. - Restore the level of liquid inside the siphon (section 6.1.2); 020025.01.029 020002.01.030 Figure 63 Figure 64 MYDENS COSMOGAS...

  • Page 83: Removing The Air Vent Valve

    4. - Restore the state of the appliance by reassembling everything in the reverse order to that used for the dismantling phases; 5. - Restore the pressure in the central heating system (section 7.2); 020025.01.026 Figure 66 020025.01.036 Figure 67 MYDENS COSMOGAS...

  • Page 84: Removing The Diverter Valve Servomotor

    7. - Refit the flow meter "B", the two tabs must be slotted into the respective holes in the hydraulic unit (the largest towards the front of the appliance and the small one at the rear); 020025.01.032 Figure 69 020025.01.033 Figure 70 MYDENS COSMOGAS...

  • Page 85: Removing The Safety Valve

    5. - Unscrew bolts “A”; 6. - Detach the exchanger "B" by pushing it back; 7. - Extract the exchanger "B" towards the front of the appliance by rotating it as indicated by the arrow; 020025.01.034 Figure 71 020025.01.037 Figure 72 MYDENS COSMOGAS...

  • Page 86: Emptying The Appliance On The Central Heating Side

    020002.01.038 problem, it is necessary to set the heating power, to the actual need of the system, as dictated in the Figure 73 chapter 6.8. 020002.01.039 Figure 74 Legend of Figure 74; A = Open; B = Close; MYDENS COSMOGAS...

  • Page 87: Checking The Ionisation Current

    Figure 75 8.25 - Outdoor temperature sensor On request, the outdoor temperature sensor can be 1004 connected to the appliance (see section 5.14.6). The electrical resistance between the two sensor contacts must correspond to Figure 76. Figure 76 MYDENS COSMOGAS...

  • Page 88: Wiring Diagram

    8 - MAINTENANCE 8.26 - Wiring diagram Figure 77 MYDENS COSMOGAS...
  • Page 89 18 - Primary heat exchanger temperature fuse identify the correct follow-on of the cables on 19 - System fill solenoid valve the next page. 20 - Slave appliance BUS 21 - Cascade temperature sensorsensor (1015) 22 - Master appliance BUS MYDENS COSMOGAS...

  • Page 90: Technical Data

    Instantaneous DHW production (dt 30°C) l/min 12,9 16,0 Instantaneous DHW adjustment range °C 40-60 40-60 DHW adjustment range with tank °C 40-70 40-70 40-70 Design temperature °C Maximum central heating temperature °C Minimum central heating temperature °C MYDENS COSMOGAS...
  • Page 91 Max. negative pressure allowed in the flue exhaust/air intake system Condensate maximum flow rate Condensate average acidity Operating room temperature °C 0,5 ; 50 0,5 ; 50 0,5 ; 50 Boiler weight * In these conditions, the appliance power is reduced by 10% MYDENS COSMOGAS...

  • Page 92: Command Menu Diagram

    5 - Navigating the menus; 6 - Changing parameters; 7 - Menù; 0. 0 00 8 - Example of menu parameters; 0. 2 00 9 - Example of menu parameters; 10 - Menu entry button and parameter modification confirmation button; MYDENS COSMOGAS...

  • Page 93: Eu Declaration Of Conformity

    11 - EU DECLARATION OF CONFORMITY The undersigned CEO of the company COSMOGAS S.r.l., with registered office in Via L. Da Vinci no. 16 - 47014 Meldola (FC) Italy, DECLARES under its own responsibility that the central heating boiler: SERIAL No.________________________________________...

  • Page 94: Product Fiche

    12 - PRODUCT FICHE Name or brand of the supplier COSMOGAS MYDENS Supplier’s model number Predisposition Condensing boiler Low-temperature boiler B1 boiler Cogeneration space heater Combination heater Equipped with supplementary heater Energy efficiency class Item Symbol Unit Rated heat output Seasonal space heating energy efficiency ηs...
  • Page 95 12 - PRODUCT FICHE COSMOGAS MYDENS 24,8 24,8 24,8 30,9 30,9 30,9 87,6 87,6 87,6 87,2 87,2 87,2 10,3 10,3 10,3 97,7 97,7 97,7 96,3 96,3 96,3 0,035 0,035 0,035 0,035 0,035 0,035 0,010 0,010 0,010 0,010 0,010 0,010 0,003...
  • Page 96 COSMOGAS s.r.l. Via L. da Vinci 16 - 47014 Meldola (FC) Italia info@cosmogas.com www.cosmogas.com...

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