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MYDENS

COSMOGAS

8.1 - General recommendations

It is recommended to perform regular yearly maintenance of

the central heating plant for the following reasons:

- to maintain high efficiency of the appliance and therefore

save fuel;

- to maintain a high level of safety;

- to maintain the level of environmental compatibility of the

combustion high;

In order to maintain the frequency of maintenance, there
is a parameter present

2080

in the installer menu (see

chapter 7.18), which is used to activate the maintenance
call (Service) along with the parameter

2081

which is

used to set the operating days that must pass between one

call and the next.

The control system identifies the operating days, checking

the burner activity time.

Proceed as follows to activate the call service:

1.- access the Installer menu (see chapter 7.18) and set

parameter

2080

;

2.- access parameter

2081

and set the boiler operating

days which must pass between one call and the next.

The call will be completed with

SEr

on the display. To

remove the wording

SEr

and renew the call period,

operate as follows:

1.- access the “Installer menu”;

2.- access the parameter

2080

, set it on

rESE

and

press the RESET key.

3.- exit the Installer menu by pressing the RESET key for 5

seconds.

The call time is now renewed and

SEr

appears on the

display.

ATTENTION !!! Appliance maintenance must

only be performed by a professionally qualified

technician.

ATTENTION !!! Before every maintenance

operation, disconnect the appliance from the electric

power supply, using the relevant switch in the vicinity.

ATTENTION !!! Close the gas cock before any

maintenance operation

8 - MAINTENANCE

Содержание MYDENS

Страница 1: ...62403580 R00 17 12 2013_IT INSTALLATION USE AND MAINTENANCE MANUAL MYDENS GAS WALL MOUNTED CONDENSING BOILER...

Страница 2: ...ature sensor on request 21 5 15 Connecting the boiler to indirect water heater with coil 22 5 15 1 Anti legionella 22 5 16 Burned gas exhaust and combustion agent air intake pipe 23 5 16 1 Type of int...

Страница 3: ...nts 55 8 3 Removing the burner fan unit 56 8 4 Cleaning the burner and the fumes side primary heat exchanger 56 8 5 Correct positioning of the ignition and ionising electrodes 57 8 6 Controlling the e...

Страница 4: ...se by persons including children with reduced physical and sensory conditions or lack of experience and knowledge unless they have been given supervision or instruction concerning use of the appliance...

Страница 5: ...ith maximum heat input of 14 kW 24 Boiler with maximum heat input of 25 kW 34 Boiler with maximum heat input of 34 8 kW Condensing indoor pre mixed ecological gas boiler 2 3 Manufacturer COSMOGAS srl...

Страница 6: ...d burned gas exhaust fittings 17 Combustion analysis points 18 Doublefumestemperaturesensor Par 1006and1014 19 Spark generator 20 Ignition cables 21 Burner window 22 Air inlet manifold 23 Back flue pr...

Страница 7: ...water temperature sensor Par 1002 42 Plant fill cock 43 Condensate collection tank 44 Safety valve drain pipe 45 Return hydraulic unit 46 Air vent valve 47 3 way diverter valve 48 Air vent valve drain...

Страница 8: ...8 MYDENS COSMOGAS 4 OPERATION Figure 4 1 Hydraulic layout MYDENS 24P MYDENS 34P Figure 4 2 Hydraulic layout MYDENS 15B MYDENS 24B MYDENS 34B...

Страница 9: ...er for domestic hot water 24 Domestic hot water sensor Par 1002 25 Central heating by pass valve 26 Domestic hot water flow meter 27 Domestic hot water filter 28 Supply circuit drain cock 29 Return ci...

Страница 10: ...allation filled via a diverter valve or a pump outside the boiler In all of the boiler versions previously described the connection of the domestic hot water service is not indispensable if the boiler...

Страница 11: ...idual head for MYDENS 24 with 6 metre pump standard Figure 4 5 Residual head for MYDENS 34 with 6 metre pump standard You can request a modulating pump In this case the modulation range particularly x...

Страница 12: ...on request Figure 4 7 Residual head for MYDENS 34 with 7 metre pump on request RIC20 2012_b 0 50 100 150 200 250 300 350 400 450 500 550 0 200 400 600 800 1000 1200 1400 Q l h H mbar RIC20 2012_a 0 5...

Страница 13: ...resistance on the passage of the domestic hot water see flow rate pressure graphics in figure 4 9 The installer or design technician must take this into consideration in order to guarantee the correc...

Страница 14: ...valve calibrated at 3 bar A water head over 30 m must therefore not be installed ATTENTION COSMOGAS is not liable for any damage caused by incorrect use of additives in the central heating plant ATTEN...

Страница 15: ...than 0 5 mm in the domestic cold water inlet ATTENTION The domestic hot water circuit must be realised with materials resistant to a temperature of at least 95 C and pressure of 10 bar Differently e...

Страница 16: ...apable of preventing the pressurisation of the system siphon prepared within boiler and to prevent the return of bad odours from the sewer detail G in figure 5 7 If the room used for office purposes h...

Страница 17: ...provided with the fittings illustrated in figure 5 6 as per standard where A central heating supply 18 in the 15 and 24 models 22 in the 34 model B domestic hot water 14 absent in the B and C models C...

Страница 18: ...phosphates softener on request If the boiler is installed in a geographical area where domestic water has hardness exceeding 25 F 250 mg l a polyphosphates softener must be installed on the cold water...

Страница 19: ...e of at least 3 mm as envisioned by the current regulations on the subject Respect the polarity between the neutral phase during connection of the appliance Make sure that the water plant and heating...

Страница 20: ...ed with the following features open closed ON OFF potential free not powered closing when there is a request for heat 24Vac 1A electrical feature 5 14 3 Connecting the room thermostat chronothermostat...

Страница 21: ...afety voltage 24Vdc they must flow in wires different from the 230 Vac power supplies 2 connect the bipolar cable to the SE clamps in figure 5 10 3 connect the bi polar cable to the ends of the extern...

Страница 22: ...d against the potential risks of scalding by introducing devices that limit the temperature of use of domestic hot water to utilities 5 15 1 Anti legionella If the boiler is connected to a indirect wa...

Страница 23: ...es plate affixed to the boiler also under the type heading The symbols used to define type of exhaust is given below B23 separated with intake in room and exhaust through wall or roof ATTENTION If the...

Страница 24: ...lso be obtained from an adjacent room as long as it has direct ventilation in compliance with the previous points in the room to be ventilated only appliances fitted to exhaust pipes are installed the...

Страница 25: ...are installed each one must envision its own condensate drain The fumes exhaust air intake system can be extended up to a maximum distance as indicated in chapter 9 Every 90 bend has a loss equivalen...

Страница 26: ...mber after the code is used to recall the piece in the following drawings 62617306 N 10 PP coaxial roof terminal 62617244 N 12 90 bend M F PP 62617255 N 29 converts for pitched roofs from 15 up to 25...

Страница 27: ...ectly with the boiler pipes with condensate collection inside the boiler itself The intake must slope towards the outside to prevent rain water entering in figure 5 18 it is possible to see a separate...

Страница 28: ...an support the weight of the pipe itself ATTENTION Once these operations have been performed check that the exhaust intake terminal is exposed to the outdoors with the tolerances given in figure 5 25...

Страница 29: ...ned via rigid brackets positioned non more than 1 metre from each other The brackets must be fixed to rigid walls that can support the weight of the pipe itself ATTENTION Once these operations have be...

Страница 30: ...intake system the number after the code is used to recall the piece in the following drawings 62617255 N 2 converts for pitched roofs from 5 to 25 extension L 1000 mm 62617234 N 1 90 coaxial bend M F...

Страница 31: ...m installation examples When a coaxial exhaust is made see figure 5 25 both vertical and horizontal the exhaust pipe slope upwards in a way to make the condensate flow into the boiler Figure 5 25 Exam...

Страница 32: ...and the gaskets C 3 introduce a rubber hose into the opening B do not confuse with A and the other end of the hose into the funnel 6 OPERATING Figure 6 1 Filling the condensate drain siphon 4 use the...

Страница 33: ...is connected ATTENTION If you smell gas A Do not switch on any electric device telephone included or any object that can cause sparks B Immediately open doors and windows causing a current of air tha...

Страница 34: ...to the table in figure 6 7 for 15 kW also modify parameter 2002 taking it to 50 as indicated in the INSTALLER MENU chapter 10 press the RESET key to confirm the modification 11 remove voltage from th...

Страница 35: ...onto the front casing of the boiler see figure 6 6 certifying the appliance s new state of adjustment as follows apply label B if the boiler has been converted from natural gas to LP gas apply label A...

Страница 36: ...nside the boiler following the procedure in chapter 8 2 3 loosen the pressure point A see figure 6 8 4 connect to a manometer with resolution of at least 0 1 mbar 1 mmH2O 5 open the gas cock 6 check t...

Страница 37: ...ive pressure point and tube F to the positive pressure point 11 close the casing B in figure 8 1 It is indispensable to have a reliable measurement 12 switch the boiler on 13 press the and RESET keys...

Страница 38: ...power If the value measured is offset from the value read it must be taken back within the value given in the table in figure 6 7 Proceeding as follows a turn screw A clockwise as in figure 6 14 to d...

Страница 39: ...in central heating mode at the effective requirement of the plant Operate as follows 1 press the and RESET keys simultaneously for more than 5 seconds to enter the installer menu confirmed by the app...

Страница 40: ...figure 7 1 A Key for reducing the central heating temperature below minimum the central heating is put in OFF B Reset Key C Key for switching on and increasing the heating temperature D Burner status...

Страница 41: ...l display M shows 1001 2 press the and keys to scroll the parameters situated inside the user menu 3 hold down the RESET key for more than 2 seconds to exit the User menu If no key is pressed for more...

Страница 42: ...the boiler supplies hot water to the central heating plant at a temperature adjusted using the or keys Any room thermostat operates directly on the pump inside the boiler to adjust the heating of the...

Страница 43: ...rs 7 11 2 Climatic adjustment precautions during adjustment To set the supply temperature correctly it is good practice to immediately set the line setting values in figure 7 3 If these values do not...

Страница 44: ...nal temperature winter Par 2022 Supply temperature corresponding to the project external temperature winter Par 2023 Spring like external temperature Par 2024 Supply temperature corresponding to the s...

Страница 45: ...may block it The diverter valve and the indirect water heater pump if present are activated at the same time for the same reason 7 14 Anti freeze protection ATTENTION For the anti freeze protection to...

Страница 46: ...in minimum power mode rpm 1043 Fan rotation speed in maximum power mode rpm 1051 Latest block condition recorded Loc see chapter 7 19 1 1052 Latest error condition recorded Err see chapter 7 19 2 105...

Страница 47: ...is not confirmed with the RESET key will be lost ATTENTION Any variation to the parameters must be noted in the Customised values column present in the following table in order to facilitate the even...

Страница 48: ...ec From 10 to 900 180 2043 Protection against frequent switch on in central heating mode temperature differential C From 0 to 20 16 2060 Domestic hot water minimum power level From 1 to 50 1 2061 Dome...

Страница 49: ...water service on and active Domestic hot water temperature C Fixed on Central heating service on but not active On flashing Central heating service on and active Central heating temperature C Loc Boil...

Страница 50: ...rol the last error displayed in the board Operate according to the last error displayed Loc 5 Fan out of speed for more than 60 seconds Control it is powered at 300 Vdc If the fan is powered it must b...

Страница 51: ...at the central heating circuit flow rate is not too low If one of the two or both sensors do not have correct values they must be replaced If the temperature difference between U1 and U8 is greater th...

Страница 52: ...are error inside the command board Replace the command and control board Err 44 Flame detected in a moment when it should not be present Replace the gas valve Err 45 Central heating water low pressure...

Страница 53: ...ce the command and control board Err 58 Supply sensor circuit 2 1005 in short circuit condition Check that the electric resistance of the sensor matches the graphics in chapter 8 22 Check the electric...

Страница 54: ...activity time Proceed as follows to activate the call service 1 access the Installer menu see chapter 7 18 and set parameter 2080 at 0n 2 access parameter 2081 and set the boiler operating days which...

Страница 55: ...wnwards 3 loosen the screws H 4 pull the lower part of the front piece B towards the front and then slide it out upwards until it is released from the guides C To access the command and control board...

Страница 56: ...020002 01 024 8 4 Cleaning the burner and the fumes side primary heat exchanger To correctly clean the burner and body of the heat exchanger fumes side proceed as follows refer to figure 8 2 when not...

Страница 57: ...rom the surface of the burner must be between 5 5 and 6 5 mm 8 6 Controlling the expansion tank The expansion tank is positioned in the left side of the boiler Check the pre fill pressure of the expan...

Страница 58: ...support C outwards from the holding support 6 slide the tank D downwards paying attention to the fact that it is full of condensate water and this could escape 7 extract the siphon outwards see figur...

Страница 59: ...chapter 8 16 2 access the internal components of the appliance following chapter 8 2 3 disconnect the electric wires from the pump body 4 remove the screws B 5 extract the pump C outwards 8 10 Removin...

Страница 60: ...slide the diverter valve E upwards 8 13 Removing the flow meter The flow meter is used to measure the water flow rate of the domestic hot water If it has to be replaced proceed as follows refer to fi...

Страница 61: ...legated to the secondary heat exchanger detail 5 in figure 3 1 If this heat exchanger is no longer efficient with the passing of time it may require cleaning or replacement To remove the secondary hea...

Страница 62: ...of these is at a height below the level of the boiler 8 18 Fan Switch on of the fan only can be generated accessing the parameter 2010 situated inside the Installer menu see chapter 7 18 and set it o...

Страница 63: ...ck along with the CO2 also the combustion efficiency which must be over 96 Figure 8 18 Water sensors curve Figure 8 19 External temperature sensor curve 8 MAINTENANCE 8 22 Water temperature measuremen...

Страница 64: ...ge 8 MAINTENANCE 1001 Boiler body sensor 1 1002 DHW outlet sensor 1002 SB Indirect water heater sensor 1004 External temperature sensor 1005 Boiler body sensor 2 1006 Fumes sensor 1007 Return sensor 1...

Страница 65: ...olex connector J4 4 pin Stelvio connector J5 16 pin Molex connector J6 14 pin Molex connector J7 10 pin Molex connector J9 4 pin Molex connector PB Indirect water heater pump PS Central heating circui...

Страница 66: ...66 MYDENS COSMOGAS 8 25 Multi wire wiring diagram Figure 8 21 Multi wire wiring diagram Key see key figure 8 20 8 MAINTENANCE...

Страница 67: ...67 MYDENS COSMOGAS 8 MAINTENANCE...

Страница 68: ...1 5 Losses at the chimney burner on at minimum power 0 5 0 5 0 5 Losses at the chimney burner off 0 1 0 1 0 1 Losses at the casing burner on 0 5 0 5 0 5 Losses at the casing burner off 0 1 0 1 0 1 Lo...

Страница 69: ...ngth split 60 m 15 15 10 Fumes pipe diameter coaxial mm 60 100 60 100 60 100 Fumes pipe max length coaxial m 10 10 10 Equivalent length of a bend m Curva a 45 0 5m curva a 90 1m Weighted CO 0 O2 with...

Страница 70: ...ly for a time in seconds indicated by the number Press and release the key Press and release the key Parameters that can be displayed in the normal conditions see chapter 7 19 User menu parameters see...

Страница 71: ...Instantaneous with flow switch 4 Microaccumulation with two sensors 5 Instantaneous with turbine model P 5 model B 1 model C 0 3013 Plant fill automatic valve 0 Valve disabled 2 Valvola abilitata 0 30...

Страница 72: ...is given in the table in chapter 9 under CE type certificate PIN and meeting that required by the Directives Gas Appliances 2009 142 CE former 90 396 CEE Efficiencys 92 42 CEE Low Voltage 2006 95 CE...

Страница 73: ...al and or local The list authorised technicians is found attached to the instructions manual or can be found in the yellow pages under ATTENZIONE The authorized technician performed the first ignition...

Страница 74: ......

Страница 75: ......

Страница 76: ...COSMOGAS s r l Via L da Vinci 16 47014 MELDOLA FC ITALY info cosmogas com www cosmogas com...

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