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1. 2 1 min max Figure 31 Installation examples for the coaxial pipe 28 150 mm 300 mm 150 mm 300 mm 5 17 6 Coaxial 60 100PP system installation examples When a coaxial discharge is installed see figure 31 whether it is vertical or horizontal it is indispensable to slope the discharge pipe upwards so as to get the condensation to flow inside the boiler 6 OPERATING 6 1 Operating Before starting the appliance up it is necessary to carry out the following 6 1 1 instructions The user must be correctly instructed on how to operate the appliance in particular 8 sure that the user has the instruction and users manual and all other documentation included in the packaging Make sure the user is informed of all the special measures to be taken for discharging flue gases and that these must not be modified User Inform the user with regards to adjusting the water pressure in the System and all necessary measures for filling and bleeding air Correctly inform the user on how to adjust temperatures controls room thermostats and radiators to save energy 6 1 2 Filling of the condensation discharge trap The trap is positioned inside the boiler see
2. E 29 40 11 O HY 50 13 12 0 3 11 8 2 gt o sa I 11 18 pl 30 LI 12 10 O 12 2 2 Figure 26 Installation example Split 80 80 PP system 10 9 4 30 11 11 Figure 27 Installation example Split 80 80 PP system 25 5 17 3 Split 80 80PP system installation examples Two installation examples can be seen in figure 26 discharge into chimney with collection of condensation at base of the chimney The horizontal part of the flue gas discharge side must be pitched towards the T with condensation collection The intake must be pitched outward to prevent rainwater entering discharge directly outside with the pipes of the boiler with collection of condensation inside the boiler itself The intake must be pitched outward to prevent rainwater entering A sep
3. secure the outer pipe with stainless steel self tapping screws B CAUTION After the above operations check that the end of the discharge intake faces outwards with the tolerances shown in figure 31 Take particular care when installing piping through a wall to the outside install the piping in sheathing so that it can be easily slipped out for access during routine maintenance Horizontal sections must always be pitched by at least 296 towards the boiler The flue gas discharge air intake pipe can be extended up to the maximum distance given in the table in section 9 at the end of the manual 5 INSTALLATION 125 5 17 5 60 100 PP system available accessories The following accessories are available on request for installing the flue gas discharge air intake system 60 100 the number after the code refers to the part in the following drawings 500 500 62617255 No 2 flashing for roofs pitched between 15 and 25 62617234 No 1 Coaxial elbow 90 M F PP 62617252 No 6 Coaxial elbow 45 M F PP 62617231 No 7 Coaxial extension L 1m PP 62617250 No 3 Coaxial roof end piece PP COD 6261 7255 62617232 No 5 Coaxial wall end piece PP RTL COD 62617234 COD 62617252 1000 62617231 02100 260 260 0100 COD 62617250 COD 62617232 127 5 INSTALLATION
4. 1 11 When entering the Users menu the display 48 as per figure 1 starts to blink indicating to the user that a change of mode has taken place In order to access the Users menu just Users press the button for 2 seconds until the display starts to blinking press and release the button several times until the parameter Press in order to confirm the amended data and pass onto the next parameter Once you have reached the end of the menu on the last the display stops blinking indicating exit from the menu If no key is pressed for more than 60 seconds one automatically exists the menu Any change in the parameters not confirmed using the button will be lost desired is displayed by means of the It is possible to change or consult the or keys following parameters in this menu itis possible to change the value of the parameter DESCRIPTION Adjustment of the gradient of the line as per figu res 38 and 39 visible only with climatic adjustment active See section 7 2 Adjustment of Minimum heating temperature visible only with climatic adjustment active See section 7 2 Adjustment of Maximum heating temperature visible only with climatic adjustment active See section 7 2 Adjustment of the parallelism of the line as per figures 38 and 39 visible only with climatic adjustment active See section 7 2 Display of calcula
5. 096 O2 with natural gas class 5 EN 483 and EN 297 CO2 96 Maximum flue gas temperature Flue gas mass flow Head available at discharge Maximum condensation flow rate Average degree of acidity of condensation Boiler weight kW kW kW kW kW stars 96 96 96 m h Kg h mbar mbar mbar mbar mbar mbar mbar mbar It kg It kW l min It V Hz mm m m mm m m ppm ppm Natural gas LP gas C Kg h Pa kg 54 NOVADENS 24 NOVADENS 34 GB IE GB IE C13 C33 C43 C53 C63 C83 2 2 0694BR1222 0694BR1222 25 0 34 8 5 0 8 0 24 5 34 1 26 2 36 2 98 98 104 104 4 9 7 8 52 8 3 97 97 104 104 108 2 108 2 kk kk 1 5 1 5 0 2 0 2 0 5 0 5 0 1 0 1 2 64 3 68 1 94 2 70 20 20 30 30 15 15 25 25 27 27 45 45 6 6 4 4 6 6 3 8 2 2 11 11 10 10 5 5 24 5 34 1 125 172 11 7 16 3 95 95 80 80 20 20 3 3 1 1 7 T 0 05 0 05 10 10 230 230 50 50 105 105 IP 20 IP 20 80 or 60 80 or 60 40 25 15 10 60 100 60 100 3 7 3 7 45 elbow 0 5m 90 elbow 1m 10 20 9 17 8 7 9 0 8 7 9 0 10 10 5 10 10 5 90 90 42 3 59 60 60 3 84 5 57 4 4 50 50 10 EC COMPLIANCE DECLARATION The undersigned company COSMOGAS S r L with registered offices in Via L Da Vinci 16 47014 Meldola FC ITALY DECLARES under its own exclusi
6. Check the pressure gauge reading of the boiler once again If it has dropped re fill again until its reads 1 5 bar 6 1 4 Filling of the secondary heat exchanger of the domestic hot water Once the heating circuit has been filled it is also necessary to carry out the filling of the secondary heat exchanger Proceed as follows connect a rubber tube to the pressure coupling A shown in figure 32 and take it to the discharge of a sink or similar loosen screw as shown in figure 32 until you hear the air escape and wait until just water runs out tighten screw A once again as shown in figure 32 29 remove the tube previously connected and check that there are no water leakages 6 2 General warnings concerning gas suppl When starting up the boiler for the first time have qualified technicians check the following That the boiler is powered by the type of fuel it is designed to use That the gas supply pressure with boiler on and boiler off is within the maximum and minimum values given in the table in section 9 at the end of the manual That the gas supply system is provided with all the safety devices and controls required under current national and local legislation That the flue gas discharge terminal and the air intake terminal are free from any blockages That the condensation discharge connection is connected CAUTION If you smell gas A Do
7. 47 8 7 Replacement of the pump 48 8 8 Checking the expansion tank qd abren nana 48 eea 49 8 10 Draining the heating side of the 50 8 11 Draining the domestic side of the appliance i 50 OP PIER TORRE A 50 8 13 teca oR ree iion pute textus astu ase itus hubs i ee 50 EE SAF Al erosive ce CH AA 50 8 15 Minim rm and maximM m ers P 50 8 16 Checking the ionization iene 50 8 17 Water temperature gauging SENSO 51 8 18 Outside temperature sensor e 51 8 19 Functional wiring diagram AA AR 52 8 20 Multiwire wiring diagram 53 9 TECHNICAL FEATURES paria 54 10 EC COMPLIANCE DECLAFRATIGOD 55 1 GENERAL SAFETY WARNINGS If you smell gas Close the gas cock Ventilate the room Do not use any electrical appliances telephone included Immediately call a qualified technician or the gas board from another room or building If you cannot contact them call the Fire Brigade If you smell pruducts of the comb
8. 5 6 Domestic hot and cold water CAUTION If the water hardness is greater than 25 F we recommend installing a softener with filter see section 5 13 Figure 10 illustrates the positioning of the domestic hot and cold water pipes For servicing purposes install a cut off cock upstream from the cold water inlet Connection of the domestic hot water service is not indispensable if the boiler is required solely for central heating purposes it is sufficient to connect the cold water pipe so as to fill the heating system and close the d h w outlet 113 5 7 Gas supply CAUTION It is forbidden to use a different gas to that stated for the boiler CAUTION Check that the gas type and the pressure of the gas supplied correspond with those required for the boiler There are two possible situations A the gas type and the supply pressure match those of the boiler setting In this case proceed with connections B the gas type and the supply pressure do not match those of the boiler setting In this case the boiler must be converted to the type of gas and supply pressure available A special conversion kit is available on request from your salesman or direct from COSMOGAS Before installation we recommend thorough flushing of the gas supply pipe An on off cock must be installed on the gas supply pipe To avoid damaging the gas control unit of the appliance carry out a leak test at a pressu
9. number of sensors which gauge the temperature are positioned on the boiler s heat exchanger The electrical resistance existing between the two contacts of the sensor must correspond with the values shown in figure 55 The temperature sensors are NTC1 NTC2 NTC3 NTC5 and NTC6 whose positioning can be ascertained in figures 1 57 and 58 8 18 Outside temperature sensor An outside temperature sensor can be connected to the boiler on request see sections 7 2 and 7 4 The electrical resistance existing between the two contacts of the sensor must correspond with the values shown in figure 56 8 MAINTENANCE 8 19 Functional wiring diagram 102611m2 g 1 230V 230 1 2 GS 230V NTC3 NIC7 4 ki 2 1 58 300V DC null Hall supply 8 V all sensor 300v DC 1550 300V DC VGI 8850 230V sf 1 8 2 NIC4 NTC6 NIC1 NTC2 e 4 E i du in Figure 57 Functional wiring diagram 52 CM Command and control board CR Remote control optional CR04 Remote control optional EA Ignition electrode ER Detector electrode F1 Power supply fuse 1 6A F2 Storage tank pump fuse GS Spark generator IG On off power switch IEI Summer Winter switch INT Opentherm interface J1 6 pole connector
10. The expansion tank is positioned at the back of the boiler In order to check the pressure or dismantle it proceed as follows refer to figure 50 dismantle the discharge pipe from fitting 2 as per figure 1 remove screws B remove part with your hands turn the expansion tank A until valve F is in an accessible position release the pressure from the heating circuit following the procedures in section 8 10 check the 0 pressure of the expansion tank It must be 1 bar If the pressure is lower proceed to reinstate it letting the water run out of the heating discharge cock detail 11 of figure 1 If the expansion tank needs to be replaced proceed as follows empty the heating circuit following the procedure indicated in section 8 10 unscrew nut E remove the expansion tank drawing it out upwards 8 MAINTENANCE Figure 53 Extracting the 3 way valve 49 8 9 Dismantling the 3 way valve The 3 way valve detail F of figure 52 inverts the flow of water produced by the primary heat exchanger to the heating circuit or the secondary heat exchanger for the production of d h w Should it become necessary to replace it proceed as follows refer to figures 51 52 and 53 empty the water from the heating circuit following the procedure indicated in section 8 10 access the inter
11. J2 4 pole connector J3 12 pole connector J4 4 pole connector J5 16 pole connector J10 10 pole connector J18 8 pole connector NTC 1 Boiler temperature sensor NTC 2 D H W outlet sensor NTC 3 Domestic cold water inlet sensor or storage tank sensor NTC 4 Outside temperature sensor optional NTC 6 High temperature limit sensor NTC 7 Flue gas temperature sensor NTC 8 Return temperature sensor optional PB Storage tank pump optional PO1 Circulator pump PR Water pressure switch PSR Heating additional pump R1 Support relay for external pump max 100 W RAN Relais for antifreezing resistance SB Storage tank sensor optional SDC Connection board 1 Room thermostat bridge inside the boiler TA2 Room thermostat bridge on remote control optional TAN no present in this model V3V 3 way valve VC Automatic charge valve VE Fan VG Gas valve 8 MAINTENANCE iwire wiring 8 20 Mult diagram NTC3 Key see key to figure 57 Figure 58 Multi wire wiring diagram 153 9 TECHNICAL FEATURES MODEL Country of destination Type Category EC type certificate PIN Nominal input heat Minimum input heat Nominal output heat 80 60 P Nominal output heat 50 30 P Efficiency at nominal output heat 80 60 Efficiency at nominal output heat 50 30 Minimum output heat 80 60 Minimum outpu
12. NOVADENS By means of this boiler a system can be created for the production of instant domestic hot water and a heating system with heating elements functioning at temperatures ranging between 30 C and 80 C An example of this type of system is shown in figure 2 B NOVADENS B By means of this boiler a system can be created for the production of domestic hot water using a storage tank BWR or equivalent model and a heating system with heating elements functioning at temperatures ranging between 30 C and 80 C An example of this type of system is shown in figure 4 NOVADENS By means of this boiler a system can be created for the only heating with heating elements functioning at temperatures ranging between 30 and 80 An example of this type of system is shown in figure 3 In this model is moreover possible to connect also after the installation en storage tank model BWR filled up through one external valve to the boiler D NOVADENS P By means of this boiler a system can be created for the production of instant domestic hot water and a heating system with heating elements functioning at temperatures ranging between 30 and 80 C An example of this type of system is shown in figure 2 E NOVADENS 0834 By means of this boiler a system can be created for the production of instant domestic hot water and a heating system with heating elements functioning a
13. NOVADENS 24C NOVADENS 34C for settings see section 5 5 109218m1 c 48 35 8 29 6 38 Figure 5 Hydraulic diagram NOVADENS 24 or 24P NOVADENS 34 or 34P connected to B70 type storage tank for settings see section 5 15 4 FUNCTIONS OF THE APPLIANCE Key to figures 2 3 4 and 5 1 COSMOGAS boiler NOVADENS model 2 automatic air vent 3 7 air intake 4 flue discharge 5 7 sealed combustion chamber 6 expansion tank 7 burner 8 fan 9 gas valve 10 5 condensation discharge trap 11 circulator pump 12 3 way valve 13 secondary heat exchanger for d h w 14 pressure gauge 15 by pass valve optional 16 filling cock 17 7 safety relief valve 18 gas cock 19 7 cold water inlet cock 20 safety relief valve discharge optional 21 condensation discharge 22 heating supply pipe 23 domestic hot water outlet 24 7 gas inlet 25 cold water inlet 26 heating return pipe 27 trap funnel optional 28 heating system for radiators or radiant panel type heating system to be fitted by installer 29 domestic hot water system to be fitted by installer 30 31 re circulation supply pipe for water heater loading to be f
14. Opening the control panel 155 8 MAINTENANCE 2 109618m0 a D lel REA a VER Figure 42 Preparation for the extraction of the condensation collecting trap Figure 43 Dismantling the condensation collecting trap 8 3 Cleaning of the condensation collecting trap In order to correctly clean the conveying and collection trap for the condensation produced by combustion itis necessary to proceed as follows refer to figures 42 and 43 force the domestic hot water service as described in section 8 15 with the aim of lowering the level of liquid present in the trap A access the internal components following section 8 2 place a waterproof cover B over the electrical panel to avoid any drops of water entering the electrical system loosen spring with a pair of pliers pushing in downwards draw out the condensation tube downwards unscrew the nut E pull out trap A downwards taking care since it is full of condensation water and during the rotation outwards it could spill open the trap and clean inside re assemble everything proceeding in reverse order taking care that gasket F is replaced in the specific housing restore the level of liquid inside the trap pouring in 100 cm3
15. a change of mode has occurred In order to access the Installers Menu just keep the button pressed down for 12 seconds until the parameter is displayed continually press and release the button to scroll through the list of the parameters once the parameter has been wes it can be changed using the or keys press and release the Reset button in order to confirm the amended data and pass onto the next parameter once you have reached the end of the menu on the last the display stops flashing indicating exit from the menu If no key is pressed for more than 60 seconds one automatically exists the menu Any change in the parameters not confirmed using the eset button will be lost It is possible to change or consult the following parameters in this menu 7 USE PARAMETER DESCRIPTION Ui Uc U3 U4 US Ub 109 U Ey rt F p CH or tn L 5 PS Boiler and heating supply tempe rature gauged by NTC1 sensor Domestic hot water tempera ture gauged by NTC2 sensor Domestic cold water or storage tank temperature gauged by NTC3 sensor Outside temperature gauged by NTC4 sensor lonization current gauged High limit temperature gauged by NTC6 sensor Flue gas temperature gauged by NTC7 sensor Type of basic setting of control board Status of room thermostat contact Measurement of fan speed rotation Power set for heating ser
16. connections for boiler with BWR sto rage tank The NOVADENS B or NOVADENS B0834 model boiler must be connected to a storage tank for the production of domestic hot water For this purpose connection fittings to the storage tank have been provided for For the preparation operate as follows refer to figure 15 mount pipe to fitting A mount pipe to fitting B mount fittings and D respectively to F and Take care to insert the appropriate gasket in each coupling 5 13 Softener on request If the boiler is to be installed in a geographic area where the domestic water hardness exceeds 25 F 250 mg l a softener must be installed on the cold water supply see figure 16 detail B so as to safeguard the appliance from any blockage in the domestic water circuit In order to facilitate installation a softener may be request to COSMOGAS with a specific installation kit Reference of Figure 17 A Box tool s control B stirrup of block C toward of opening C Cover D fixing screws E Cover electrical connexion board F toward of opening E cover Power supply cable not included Room thermostat cable not included 5 INSTALLATION 5 14 Electrical connections overview CAUTION The appliance is only electrically safe when it is correctly connected to an efficiently earthed system carried o
17. it is necessary to rotate them Upon start up an F is shown for 2 minutes during which the purging of the plant takes place If you wish to by pass this stage just press the keys and together until a blinking F appears Then press the RESET button Rotate the controls 30 and 31 shown in figure 1 to the desired temperature The heating service will only start up when the room thermostat calls for heating If an external temperature sensor is connected check that the temperature calculated is higher than the minimum running temperature see section 7 4 Ifthe pump indicator is illuminated but the pump see figure 1 detail 39 is not running try releasing it using the special screw remove the screw 47 shown in figure 1 and turn the screw underneath Ifthe pump indicator is illuminated but the radiators do not heat up repeat air bleeding operations on both the boiler and the radiators 6 5 1 Auto purg ing Each time the power supply to t appliance is switched on a procedure for the auto purging of the air in the plant commences lasting 2 minutes The procedure involves the switching on and off of the pump in order to facilitate the evacuation of the air Before starting the procedure up ensure that you have opened the automatic air vent detail 1 of figure 1 6 6 Checking and adjusting the gas supply pressure The gas supply pressure must match that given in the tabl
18. not use any electrical appliance including telephones or any object which might cause sparks B Immediately open doors and windows to produce a current of air to rapidly clear all gas from the room C Immediately call from another room or from a neighbour s house a qualified technician or the gas board If you cannot contact them call the Fire Brigade 6 OPERATING 6 3 Gas type indicated for the boiler On the front of the boiler there is a label indicating the type and supply pressure of gas to be used for the boiler The boiler can have one of the following two labels 2H G20 20mbar NATURAL GAS means that the appliance should be used with gas type H of the second family natural gas at a supply pressure of 20 mbar 3P G31 30mbar L P Gas means that the appliance should be used with gas type P Propane also known as L P Gas of the third family at a fixed supply pressure of 30 mbar 6 4 Converting the boiler from one gas type to another Conversion of the appliance to use another type of gas must be carried out by a qualified technician If the gas available is not of the type to be used with the appliance it must be converted Special conversion kits are available for this purpose 6 5 Start up Open the gas cock Switch on electric power to the boiler If the display shows code E 21 it means that the polarity has not been observed between phase and neutral Therefore
19. panel Supply temperature C 20 15 10 5 0 5 10 15 20 25 30 External temperature Figure 39 Graphs of the climatic adjustment for low temperature systems 56 7 USE 7 5 Boiler settings SWITCHES With just one control board detail 13 of figure 1 itis possible to set the appliance in various different architectures For this purpose within the Li board a series of electrical switches see figure 21 detail A is envisaged identified by the wording SWITCHES whose positioning ON or OFF determines the type of functioning of the appliance CAUTION Changing these switches could cause the appliance and therefore the system to malfunction For this reason only a professionally qualified technician who is sensitive to and has in depth knowledge of the appliance and the functioning of the system can change them JUMPERS Position Description 1 OFF Appliance with production of instant D H W ON Appliance with production of D H W via starage tank 2 OFF Appliance with production of instant D H W ON Position not available for this series of appliances 3 OFF Pressure switch for minimum heating pressure inhibited ON Pressure switch for minimum heating pressure inserted 4 OFF MWL brand fan ON FIME brand fan 5 OFF Combined boiler heating and d h w ON Boiler for just heating 6 OFF Heating service functioning between 30 and 80 low temperatu
20. pressure value on the pressure gauge with the table in section 9 Comburant air pressure if the pressure is at a lower value check that there are no obstructions in the comburant air flue gas discharge circuit press the key to return the boiler to normal running conditions once the check has been carried out reassemble everything as it was originally 6 OPERATING KG Figure 36 Combustion analysis probes Figure 37 Domestic hot water flow selector switch 6 8 Checking and adjusting CO2 levels The levels of CO2 carbon dioxide in the boiler under normal operating conditions and below an altitude of 1 000m are given in the table in section 9 Different values to those given may lead to malfunctioning In order to check this value carry out an analysis of the combustion Proceed as follows connect a combustion analyser to the special connection on the discharge fitting B of figure 36 generate a heating request if this is not possible fully open a domestic hot water tap press together the C and keys for more than 10 seconds the display will show press the _ key until the display shows if there is a heating request or until is displayed if a domestic hot water request has been generated Now the boiler will run for 10 minutes at maximum power wait
21. running conditions and in its response to the external temperature changes A high Reaction value guarantees the speed of reaching full running conditions but also possible oscillations in the temperature inside the dwelling You are advised to maintain this value between 1 and 2 b Fix point is the heating supply temperature when the external temperature is 20 It is called Fix Point because itis also the angle fulcrum of the line The suggested starting values are 33 for low temperature systems 50 for high temperature systems 7 4 4 Climatic adjustment adjustments of the various climatic zones The values previously suggested are for dwellings with an average insulation and for climatic areas where the external temperature for the calculation of the heat requirement is 5 C by means of these figures correspondence is obtained with the diagrams in figures 30 and 31 In the event that the climatic zone is different adjust the gradient of the curve parameter U so as to obtain a supply temperature of 80 45 C in the event of Low temperature systems when the external temperature is that ofthe calculation base for the heat requirement 7 4 5 Climatic adjustment switching on and off the heating service The climatic adjustment service is completely automatic also with regards to switching off at the end of the season and subsequent switching on at the begi
22. see section 6 6 sparks on ignitions electrodes see section 8 5 correct pressure of comburant air see section 6 7 220Vac electricity supply to gas valve electrical element ofthe two coils of the gas valve 0 88 Kohm and 6 59 Kohm If the burner switches on and off at the end of the ignition attempt check that the ionization current is set at a value greater than 60 follow procedure in section 8 8 4 Check that the ionization current is set at a value greater than 60 follow procedure in section 8 8 4 If the ionization current is not Check that the flue gas discharge is appropriately protected from obstructions caused by gusts of wind Check that the pump is working Check the earthing of the appliance Check that the electrical element of the flue gas sensor complies with the graph in section 8 9 check the efficiency of the boiler it must be over 9696 Check that the electrical element of the flue gas sensor complies with the graph in section 8 19 42 Solutions If the supply pressure is incorrect it is necessary to take steps upstream from the appliance in order to restore it ifthe comburant air pressure is incorrect it is necessary to take steps on the venting system in order to eliminate any obstruction if the current to the gas valve is not 230Vac it is necessary to replace the control and command board if the electrical element of the gas valve is not 0 88 Kohm and 6 59 Kohm the valv
23. single part is built tested and assembled with pride at the COSMOGAS factories thereby guaranteeing optimum quality control Thanks to on going research carried out by COSMOGAS this product has been conceived and is considered to be the best in NOVADENS XXYYYY HANNA its class with regards to respect for the environment since it falls within class 5 less polluting envisaged by technical norm EN 297 and EN 483 and has an elevated efficiency 4 star as per EC Directive 92 42 CEE Great importance is also given to the end of the appliance s useful life All its components can easily be separated into similar and completely recyclable parts 2 2 Description of models Boiler with exchanger sanitary to partial accumulation A Boiler for only heating without integrated pump B Boiler which can be combined with BWR C series storage tank C Boiler for only heating with integrated pump P Boiler with exchanger secondary for D H W to plates 0834 Boiler for low temperature central heating systems 24 Boiler with maximum input heat of 25 kW 34 Boiler with maximum input heat of 34 8 kW Gas fired condensing hot water boiler with sealed combustion chamber and pre mix burner for heating and domestic hot water production 2 3 Manufacturer COSMOGAS srl Via L da Vinci 16 47014 Meldola FC ITALY Tel 39 0543 498383 Fax 39 0543 498393 15 www cosmogas com info cosmo
24. the table on the left 32 89 65 1 30 81 59 6 10 Domestic 28 74 54 hot water flow rate 26 67 49 adjustment 24 95 59 43 The quantity of domestic hot water which can be produced from the 22 85 92 38 boiler depends on the pressure of the 20 15 44 32 hydraulic circuit If the pressure is high the water will move too quickly around 18 65 37 21 the circuit without being heated It is 16 55 30 22 therefore advisable to carry out the 14 92 45 22 16 following adjustments switch on the boiler 12 76 35 15 11 adjust control 30 as shown in figure 10 60 25 7 5 1 at 48 50 C fully open a hot water cock In the 8 44 15 event of a mixer cock with single 6 28 5 lever the position must be on HOT wait 5 minutes for the temperature to stabilize Tabella per la regolazione della potenza in riscaldamento reduce the water flow using the flow selector A see figure 37 until reaching the desired temperature Water flow should generally be regulated according to the values given in section 9 under the heading instant d h w production dt 30 33 7 USE 7 1 Adjusting the domestic hot water The adjustment of the domestic hot water temperature when present is carried out by turning the control 530 shown in figure 1 When the control is touched the display 48 shown in figure 1 shows a blinking and the temperature which is being set is shown The setting field within which
25. the temperature sensor into the socket 12 as shown in figure 19 CAUTION Since the cables are subject to low safety voltage 24Vcc they must run through ducts different from the 230Vac pump power supply cable connect a three pole double insulated electrical cable Live Neutral and Earth with a minimum cross section of 1 5mm2 which is resistant to a minimum temperature of 70 feature T to terminals 3 and 5 and to the earth connection and connect the other end of the cable directly to the pump of the storage tank see figure 19 detail 11 5 15 1 Prevention against Legionnaires disease If the boiler is connected to a storage tank for the preparation of domestic hot water a disinfection cycle is envisaged against Legionnaires bacteria This cycle anticipates taking the storage tank to a temperature of 60 temperature at which said bacteria die at least once a week Therefore the water at certain times may reach the user at a higher temperature than that set on the knob on the specific control The first time the boiler is started up the anti Legionnaires cycle is also started after 2 hours of running 5 INSTALLATION COSMOGAS boiler w 4 Gas supply 5 6 Connection for filling the heating system to be carried out by the installer 7 BWR C type storage tank 8 Domestic hot water outlet I 22 9 Cold water inlet 10 Supply and return fo
26. water temperature sensor circuit interrupted NTC3 cold water temperature sensor circuit interrupted Circuito sensore temperatura caldaia NTC6 interrotto Controls Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 9 check the electrical connection cables between the probe and the command board Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 9 check the electrical connection cables between the probe and the command board Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 9 check the electrical connection cables between the probe and the command board Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 9 check the electrical connection cables between the probe and the command board 43 Solutions If one of the two or both sensors do not have the correct values it is necessary to replace them Replace the command and control board Replace gas valve Replace gas valve If the sensor is not within the correct values it is necessary to replace it Otherwise it is necessary to replace the control board Replace the command and control board If the fan is powered it is necessary to replace it differently replace the board If the pressure switch is not correctly set it must be replaced if the system has a leak it must be fi
27. 0834 model boilers can also be connected subsequently for the installation of a B70 C series storage tank see figure 5 10 All the boiler versions described previously can be connected to a room thermostat for the setting of the heating Or so as to improve the quality of the heating service itis possible to connect an external temperature sensor Climatic heat adjustment so as to automatically set the supply temperature in relation to the external temperature the room thermostat in this case can make a compensation of the room temperature The room compensation can be of an ON OFF type or two stage For further information on the Climatic heat adjustment refer to section 7 4 For take advantage of the rendering characteristics of boiler it is advised to connect it to the CR04 cronothermostat see chapter 5 14 5 what it will regulate the temperature of supply to the radiators in continuous and linear way to maintain the temperature environment planned The boiler must be connected to a heating system and a domestic hot water supply with compatible specifications performance and power rating Before installation thoroughly flush the heating and plumbing systems of any residue or impurities which might compromise the smooth running of the boiler This boiler is not designed for outside installation Choose a sheltered place where it is protected from atmospheric elements including fros
28. 3 99 1005 51 10 00 SZFEOPZY momo CN C CN 0000 0 2222 LLI LLI LLI LU lt lt A 2222 gt 2222 3ONVI IddVv JHL 40 FONVNILNIVIN SSN NOILVTIVLSNI ALSAVS SNIQHVO3MW NOILVINHOANI INVLHYOdINI SNIVLNOO LI ATINASYVO WANVW 3H L Ov39 ASVA ld 544108 SVD 40 J3ONVN3LNIVIN NOLLV TIV LSNI 403 TVANVIN NOILONYLSNI Table of contents 1 General safety 4 1 1 uei 4 2 GENERAL INFORMATION i Ano opinabile 9 22 0 01 T D 2 2 Description Of ieii 5 MEE cU WM 5 2 4 Key to symbols AA 5 3 LUPAIN BG NS mn yrce w 6 8 4 1 Intended use and functions of the appliance 10 4 2 Characteristic curves of heating system s residual head 11 4 3 Characteristic curve of the domestic side nna 11 SES eT 12 5 1 Openmg the packaging a
29. 30 of figure 1 to maximum and fully open the hot water tap by pressing keys CD and together for more than 10 seconds until appears on the display press key E gt until the display shows for forcing the heating to minimum output for forcing the heating to maximum output gt for forcing the domestic hot water to minimum output for forcing the domestic hot water to maximum output press the key in order to restore the boiler to normal running conditions 8 16 Checking the ionization current During the checks on the minimum and maximum output see section 8 15 the display shows the letter of the service checked t or S and at the same time in the second part of the display shows the value of the ionization current At 30 it corresponds to a current of 1 uA at 99 to a current of 5 5 uA This value must always be greater than at least 60 8 MAINTENANCE 618 L16 14 12 10 8 6 4 2 0 15 20 25 30 35 40 45 50 55 60 65 70 75 80 t C Tab sonda caldaia Figure 55 Water sensors curve ce 100 1 x o 90 80 70 60 50 40 30 20 4 Tab sonda esterna 0 T T T 1 20 10 0 10 20 30 t C Figure 56 Outside temperature sensor curve 151 8 17 Water temperature gauging sensor
30. H parameter value from 00 to 01 or 02 in relation to the type of climatic heat adjustment desired see section 7 4 press the button repeatedly until exiting the menu the display will no longer flash 5 INSTALLATION 5 14 5 CR04 remote time control optional he 4 time control is a room thermostat capable of interacting with the boiler adjusting the room temperature in a modulating manner and not by steps This device is really a genuine heat regulator capable of operating or otherwise with the outside temperature sensor and therefore of adjusting the room temperature in an optimum manner If the boiler has been factory purchased without this device it is first of all necessary to fit an Opentherm interface board as described in the following section If the boiler has been purchased inclusive of the remote control it means that the Opentherm board has already been installed on the boiler and it is only necessary to install the remote control as follows Install the CRO4 remote control in a point of the building where the temperature is as close to that characteristic of the house and in any event in an area not subject to sudden temperature changes far away from windows and doors which directly connect with outdoors see figure 18 In order to connect the room thermostat cable proceed as follows refer to figure 17 use a bipolar cable with a minimum cross section of 1 5 mm2 which leads f
31. PERATING Figure 35 Checking the comburant air pressure 131 6 7 Checking the comburant air pressure Since the boiler has a factory set air gas ratio the pressure of the gas at the burner is controlled indirectly the comburant air pressure is checked inside the boiler and must correspond with that shown in the table in section 9 under the item Comburant air pressure To carry out the check proceed as follows refer to figures 34 and 35 use a differential pressure gauge with a precision of at least 0 1 mbar 1 mmH20 close the gas cock open the boiler casing following section 8 2 remove plug loosen the screw of the pressure probe insert a tube which goes from the pressure gauge passing through the opening of the plug B to the pressure probe C as in figure 35 remove the plug A from the pressure probe and connect the differential pressure gauge the connection must be carried out as in figure 35 scrupulously observing the polarity of the pressure shown on the pressure gauge close up the casing L as per figure 40 It is indispensable to have a reliable measurement switch on the boiler press keys and together for more than 10 seconds until is displayed now the fan is forced to maximum power with the burner off for 10 minutes compare the
32. WR C type water heater 121 5 INSTALLATION C83 107721 00 a M CIS 033 Tt 107721m0 b Figure 22 Approved discharge intake systems 22 5 17 Venting systems CAUTION All venting systems must be connected in compliance with current national and local standards CAUTION Under determinate conditions the temperature of the appliance s flue gases may reach 110 C Therefore use plastic piping capable of resisting this temperature JN iom This is a condensation type appliance In order to create the flue gas discharge use materials in AISI 316L stainless steel or plastic materials in polypropylene so as to avoid corrosion due to the acidity of the condensation Remember that this type of appliance must have discharge and intake pipes supplied by the appliance manufacturer Any other types of pipe must be approved The approved types of flue gas discharge system are given in the table of technical feat
33. al 48 Display 23 Burner window 36 Condensation discharge pipe 49 Electric connections board 24 Air gas manifold 37 Secondary heat exchanger for 50 Opentherm interface board 25 NTC6 high temperature limit domestic hot water optional sensor 38 Expansion tank connection pipe 26 Flue gas flow back 39 Circulator pump prevention valve 40 Condensation discharge trap 27 Fan 41 Expansion tank 28 Gas valve 42 lonization electrode 29 Pressure gauge 43 Burner 30 Domestic hot water control 44 Right ignition electrode 31 Heating control 45 Left ignition electrode 32 On off power switch 46 Spark generator Figure 1 Internal components of boiler 17 4 FUNCTIONS OF THE APPLIANCE 2 5 X 5 10921811 a 10 13 485 T 12 o gt RT 15 H 7 44 16 tat 1 18 19 20 12 IL 22 24 24 25 26 Figure 2 Hydraulic diagram NOVADENS 24 or 24P NOVADENS 34 or 34P ry 39 40 43 2523 imas T T T 22 48 29 Figure 4 Hydraulic diagram NOVADENS 24B NOVADENS 34B 2 5 E A 108218m0_o 28 e Figure 3 Hydraulic diagram
34. any damage caused by incorrect installation or use and for failure to comply with the manufacturer s instructions or applicable local and national legislation For safety reasons and to safeguard the environment all packaging must be disposed of in special sorted refuge collection centres 1 1 National installation legislation The installation must be carried out by a registered competent person and be in accordance with the relevant requirements of the current GAS SAFETY Installation and Use REGULATIONS the BUILDING REGULATIONS Scotland Consolidation the LOCAL BUILDING REGULATIONS the current I E E WIRING REGULATIONS and the bye laws of the LOCAL WATER UNDERTAKING Where no specific instruction is given reference should be made to the relevant BRITISH STANDARD CODES OF PRACTICE For Ireland install in accordance with IS 813 INSTALLATION OF GAS APPLIANCES B S Codes of Practice BS 6891 Gas Installation BS 5546 Installation of hot water supplies for domestic purposes BS 5449 Part 1 Forced circulation hot water systems BS 6798 Installation of gas fired hot water boilers BS 5440 Part 1 Flues BS 5440 Part 2 Ventilation BS 7074 Expansion vessels and ancillary equipment for sealed water systems BS 7593 Treatment of water in domestic hot water central heating systems 2 GENERAL INFORMATION 2 1 Introduction Congratulations You have effectively purchased one of the best products on the market Each
35. arate type flue gas discharge example canbe seen in figure 27 where the discharge of the flue gases is carried out with plastic flexible pipes for piping of technical pits All the condensation produced in the vertical pipe is conveyed inside the boiler The intake must be pitched outward to prevent rainwater entering 5 INSTALLATION A gt e Figure 28 Installation of the vertical coaxial system A or the horizontal coaxial system B Nd Figure 29 Pre installation figures and distances between holes for coaxial discharge system C 107821m0 E Figure 30 Positioning of the coaxial pipe 5 17 4 Coaxial 60 100PP system polypropylene he standard appliance is not supplied with fittings for connecting flue gas discharge outlets air intakes A special kit is available on request for connecting the boiler to a coaxial 60 100PP system to be installed as shown in figure 28 where the vertical 2 discharge is shown on the left under letter A and the horizontal discharge on the right under letter B AN CAUTION Scrupulously follow the installation steps for the coaxial pipe as illustrated in figure 26 In particular it is necessary to insertthe coaxial pipe C inside elbow
36. c ET Un 12 5 2 DIMENSIONS and clearances for 12 5 3 Choosing the point of ANAN 12 5 4 Supply and PELI er tappe bead uaa iau ia 13 5 5 Radiant panel systems or low temperature 19 5 6 Domestic hot and cold ANAN 13 ee UPIN AKA AA need 13 5 8 Assembling the appliance icsccccnsncestccetesesunvnnseanesscednnasansanddacssccsssnonndesndansadeds decenmmaamnbicesacedsdarwie 14 5 9 Gas and water connections ii a 14 5 10 Condensation tt ot alibi 15 SEE UE UR ela 15 5 12 Hydraulic connections for boiler with BWR storage 16 5 19 Softener Rr PEE 16 5 14 Electrical connections OVerVIBW uoo Dope aa 17 5 14 1 Connecting the power supply cable Hmmm 17 5 14 2 Choosing the room thermostat time programmable thermostat 18 5 14 3 Connecting the room thermostat time programmable 18 5 14 4 Installing the outside temperature sensor on FeQUESt i 18 5 14 5 CRUA remote time control ere 19 5 14 6 Installa
37. e 7 parameter at a value other Pumps and switch valve blockage CAUTION than zero considering that each value protection every 24 hours a forcing So that the anti freeze protection will correspond with a delay in minutes of the heating pump the domestic hot water pump if present and the switch valve takes place Protection against legionnaires disease if the boiler is connected to a storage tank for the preparation of d h w every seven days the latter is forced to a temperature of 60 C so as to carry out disinfection against legionnaires bacteria Domestic alarm if the appliance remains in continual domestic hot water service for longer than two hours an A1 alarm is generated until the display goes into Energy is effective it is necessary to leave Saving mode the appliance connected to the electricity and gas mains and the two controls 30 and 31 as per figure 1 turned to the OFF position Once the boiler has reached a temperature of 7 C the heating pump automatically comes on and the domestic hot water pump if present If the temperature falls further under 2 C the burner also switches on so as to protect the boiler from any problems deriving from freezing conditions If the boiler is not used for a long period of time more than a year we advise emptying it following the procedures indicated in sections 8 10 and 8 11 37 7 USO PARAMETER GA Ub r n o
38. e drops below the Minimum heating temperature the heating service ends It automatically starts up once again when the Calculated temperature once again rises above the Minimum heating temperature T 3 Thermostatic adjustment At the factory the boiler is set with the parameter at 00 or rather the boiler provides hot water to the heating system at a set temperature set on control 31 as per figure 1 A room thermostat if installed acts directly on the internal pump of the boiler in order to adjust the heating of the rooms In order to fully exploit the boiler s performances it is advisable to set the temperature on control 31 at a value which is just sufficient so as to obtain the desired temperature of the rooms If the season gets colder progressively increase the value of the temperature set 31 Proceed in the opposite manner when the season gets milder This extremely simple functioning method is suitable for the following types of system small systems with radiators and with a room whose temperature is characteristic of all the other rooms large systems with radiators where each zone is controlled by its own room thermostat and the boiler pump is shutdown only when all the room thermostats are satisfied see to an appropriate electrical system large systems with radiant panels low temperature where each zone is controlled by its own room thermostat and the boiler pump is shutdow
39. e a minimum gap of 1 metre between the air intake and flue gas discharge terminals if they are located on the same wall Figure 25 Fixing the flue gas discharge and air intake pipes 123 5 INSTALLATION 5 17 2 Split 80 80PP system available accessories Some of the most commonly used accessories for installing the split system of flue gas discharge air intake 80 80PP are listed below a much wider range however can be found in the special catalogue the number after the code refers to the part in the following drawings 62617053 No 9 chimney cap draft damper for the roof 62617244 No 12 90 elbow M F in PP COD 6261 7053 COD 6261 7244 62617255 No 29 flashing for roofs pitched between 15 and 25 62617236 No 11 extension M F in PP 125 62617248 No 18 anti extraction clamp for PP 1 extensions 62617240 No 14 flexible M F pipe in PP L 20m 62617241 No 16 spacer for flexible pipe 62617238 No 17 telescopic joint in PP 62617242 No 15 T fitting in PP 500 500 62617255 28 m 11980 2 2 m 1000 _ L COD 62617236 COD 62617248 a min340 450 ue NG e COD 62617241 COD 62617238 COD 62617242 24 5 INSTALLATION
40. e in section 9 at the end of this manual Check as follows close the gas cock access the internal components of the boiler following the procedure in section 8 2 loosen the pressure connection D see figure 33 connect a pressure gauge with a definition of at least 0 1 mbar 1 mmH20 open the gas cock check that the pressure does not exceed the value given in the table in section 9 at the end of the manual under the heading Maximum gas supply pressure switch on the boiler and generate a heating request turn control 31 shown in figure 1 to maximum and ensure that the room thermostat calls for heating press together the CD and gt keys for more than 10 seconds the display will show press the key CH until the display shows Now the boiler will run for 10 minutes at maximum power check that the pressure does not drop below the values given under Minimum gas supply pressures in 30 the table in section 9 at the end of the manual If the supply pressure does not fall within the above values operate upstream of the appliance to bring the pressure within the maximum and minimum range given in the table At the end of the check close the pressure connection D and checking for any gas leaks C Service pressure probe D Gas inlet pressure probe E 2 adjusting screws Figure 33 Gas valve 6 O
41. e must be replaced If the ionization current is not greater than 60 it is necessary to check the CO2 see section 6 8 and restore the correct value check the ionization electrode and if necessary replace it check the integrity of the electrical circuits wires of the ionization current greater than 60 it is necessary to check the CO2 see section 6 8 and restore the correct value check the ionization electrode and if necessary replace it check the integrity of the electrical circuits wires of the ionization current If the flue gas discharge is positioned on vertical walls it is necessary to protect it with wind protection grill if the flue gas discharge is positioned above the roof check that it is not in a flow back zone and that any wind protection chimneypot is really effective Restore the water circulation or replace the command and control board Replace the command and control board If the earth is good replace the command and control board If the sensor does not comply with the correct values replace it if the boiler efficiency is less than 9696 and the operating parameters are correct it is necessary to replace the primary heat exchanger and place a filter at the entrance of the heating return connection If the sensor does not comply with the correct values replace it Replace the command and control board Replace the command and control board Replace the command and control board Replace t
42. echnician Boiler temperature C Auto purging procedure in progress see section 6 5 1 It will end within 2 minutes Storage tank temperature C Anti Legionnaires disease procedure in progress see section 5 13 1 It will terminate when the water in the storage tank reaches a temperature of 60 C 2 m m r nal z vo DISPLAY 48 of figure 1 1 2 1 Parameter display 2 Display of values adopted by parameters 118910m0 3 Indicator of burner status On burner on Blinking burner off 4 Indicator of domestic service status On domestic service active xi Off domestic service inactive 5 Indicator of decimal of displayed value 3 4 5 6 6 Indicator of heating service status On heating active Off heating inactive 41 7 USE 7 13 1 Diagnostics L lock outs p Code L01 L02 L03 104 105 106 107 108 L09 L10 L12 L13 L14 L15 L16 Lock out description No flame detected after three subsequent ignition attempts Flame extinguishes three times Boiler temperature over 95 Gas valve command relay Safety inefficient relay or earth Flue gas sensor over 110 C Electrical circuit of flue gas sensor interrupted Spark generator relay RAM memory E2prom memory damaged E2prom memory damaged Programme error Programme error Programme error Programme error Controls Check Gas supply pressure
43. ed by Cosmogas The water connection must be carried out as per figure 19 For the electrical connection proceed as follows refer to figure 21 disconnect the electricity supply to the boiler access the internal components and the electrical components of the boiler following the specific section 8 2 move the switch 1 to position B ON Remove the cable from the sonde 17 of figure 1 lay the bipolar cable with a minimum 1 5mm2 section which goes from the boiler to the temperature sensor of the water heater and connect it on the boiler to terminals 15 and 16 SB 8 108718m0 TR dda MEET 7 5 1 L KHEH hu 15 13 1 COSMOGAS boiler 9 Check valve to be fitted by 2 B70C type storage tank on installer request 10 Recirculation for storage tank 3 Gas supply loading to be fitted by installer 4 d h w supply to water heater to be fitted by the installer 5 d h w outlet 6 Cold water 7 Safety relief valve 11 Storage tank loading pump 12 Temperature sensor 13 Hydraulic safety unit to be fitted by installer 14 Heating supply 15 Heating return Figure 19 Hydraulic connection to B70C storage tank type 20 connect the other end of the cable to the temperature sensor of the water heater insert the probe of
44. eplace the command and control board Replace the command and control board Restore the correct earthing of the system If the earth correction is already sufficient replace the command and control board If the selector switches are positioned correct ly replace the comand and control board 8 MAINTENANCE 8 1 General 8 2 Disassembling warnings the casing and accessing internal operations mustonybecamed COmponents out on the boiler by qualified In order to disassemble the casing technicians proceed as follows refer to figure 32 unscrew screws A raise the fastener C CAUTION Before any extract the casing outwards D maintenance operations disconnect 9 push tabs downwards and the appliance from the electricity accompany instrument panel mains using the appropriate switch during its rotation towards the front nearby remove screws in order to access the inside of the box of electrical connections CAUTION Before any push tabs E laterally and extract maintenance operations close the the cover for accessing the inside of gas cock the electrical box open the fastener I draw cover L out in order to access the inside of the combustion chamber 9 COSMOGAS ee e H ger 1035 E Figure 41
45. er than 13 mm be installed in such a way so as to avoid the freezing of the liquid therefore take care with any external stretches discharge into gutters or rain collectors is forbidden present a continual slope towards the point of discharge avoid high points which could place the pipe under pressure 5 11 Safety relief valve The boiler is protected against overpressure by a safety relief valve set at 3 bar see figure 1 detail 12 The safety relief valve discharge must be connected to pipe A see figure 13 with a minimum internal diameter of 13 mm pipe A must then be led to the smell control trap detail F offigure 14 This discharge with trap must provide protection against overpressure in the event of the valve opening and must indicate to the user that this intervention has taken place Pipe A shown in figure 13 and the smell control trap shown in figure 14 are on request CAUTION If the safety relief valve is not connected to the discharge opening of the valve could cause harm to individuals animals or property 5 INSTALLATION A BWR return pipe B BWR supply pipe C BWR return fitting D BWR supply fitting E gaskets service pipe service pipe Figure 15 Hydraulic connections for boiler with BWR type storage tank Figure 16 Softener with filter 5 12 Hydraulic
46. es or polypropylene pipes on the flue gas discharge side which are more resistant to the formation of condensation Take particular care when installing piping through a wall to the outside install the pipes in sheathing so that they can be easily slipped out for access during routine maintenance Horizontal sections must always be pitched by at least 2 towards the condensation drainage system The boiler comes supplied with a condensation collector which must be fitted to a discharge pipe see section 5 10 CAUTION This condensation drainage system is designed to empty all the liquid produced by one single appliance If installing more than one boiler each must be equipped with its own drainage system The flue gas discharge air intake systems can be extended up to the maximum distance given in section 9 at the end of the manual Each 90 elbow has an equivalent loss of 1 metre of straight pipe Each 45 elbow has an equivalent loss of 0 5 m of straight pipe CAUTION Mechanically secure the joints between the different components of the flue gas discharge and intake pipes with fixing screws or equivalent systems See figure 25 CAUTION During operation the temperature of the discharge pipe can exceed 110 C Insert protective heat insulating Figure 24 Dimensions sheathing if it has to pass through walls which are vulnerable to such temperatures CAUTION Leav
47. figure 1 detail 40 and must be filled with water in order to create the head capable of avoiding the leakage of the flue gases from the pipe 36 of figure 1 Proceed as follows for this purpose disconnect the flue gas discharge fitting from opening 2 as per figure 1 Figure 32 Bleed screws of the secondary heat exchanger from the central opening flue gas discharge slowly pour in approximately 100 cm3 a glass full of water re connect the flue gas discharge fitting 6 1 3 Filling the heating system If at the time of switching on the power to the boiler FILL appears on the display it means that it is necessary to fill the heating system Proceed as follows The heating system must only be filled with clean water from the mains SU N CAUTION The addition of any chemical substance such as anti freeze must be carried out according to the product instructions These substances must never be inserted directly into the boiler Open the automatic air vent a couple of turns see figure 1 detail 1 situated at the top of the boiler Open the supply cock located under the boiler see figure 1 detail 34 and proceed to fill the system and appliance to about 1 5 bar FILL disappears from the display Check that there is no water leaking from the fittings Close the supply cock see figure 1 detail 5347 Purging the air from the radiators
48. gas com 2 4 Key to symbols used CAUTION Risk of electric shock failure to observe this warning may compromise the smooth running of the appliance or cause serious damage to individuals animals or property General danger Failure to observe this warning may compromise the smooth running of the appliance or cause serious damage to individuals animals or property Operation symbol Important indication symbol 3 MAIN COMPONENTS 1 Automatic air vent 2 Air intake and flue gas discharge fitting venting system 3 NTC7 flue gas sensor 4 Air drum 5 Air gas mixer 6 Return unit 7 3 way valve 8 NTC2 d h w outlet sensor 9 3 way valve shell 10 Heating pressure switch 11 Heating circuit discharge cock 12 Safety relief valve 13 Control board 14 Lower cover 15 Door to control box 16 Casing 17 d c w sensor 18 Primary heat exchanger 19 Ignition cables 20 Door of sealed combustion chamber Figure 1 Internal components of boiler 6 3 MAIN COMPONENTS 21 Combustion analysis tap 33 Cable clamp 47 Screw cap for unblocking 22 NTC1 boiler temperature 34 Filling cock pump sensor 35 By pass pipe option
49. gure 13 Connection of the discharge safety valve pipe A is optional and condensation discharge M 70 CN min 10 mm max 30 mm F D 32 Figure 14 Trap funnel F on request 15 5 10 Condensation discharge The boiler is equipped internally with a trap for the evacuation of condensation see figure 1 detail 40 and so as to prevent the leakage of combustion products whose end corresponds with pipe B shown in figure 13 This end must be conveyed to another smell control trap figure 14 detail F so as to prevent the return of bad smells in the room the smell control trap F is supplied upon request In particular the condensation disposal system must for premises used for dwelling purposes office purposes with a number of occupants greater than 10 be connected to the domestic waste disposal system by means of an appropriate trap with separation capable of preventing the pressurization of the system and preventing the return of bad smells from the sewer detail F of figure 14 If the premises for office use has a number of occupants less than 10 before connection with the domestic waste discharge it is advisable to fit a condensation neutralizer see section 10 for the acidity value of the condensation and the quantity be carried out with a pipe with an internal diameter equal to or great
50. he command and control board Replace the command and control board Replace the command and control board Replace the command and control board Replace the command and control board 7 USE 1 Code L17 L18 L19 L20 L25 L32 L33 L45 L46 Lock out description Temperature difference between NTC1 and Programme error Gas valve flame sensed for 10 seconds after the closure of the valve Gas valve flame sensed before opening of gas valve NTC6 error sensor Programme error Fan rotation error Heating circuit filling time longer than 10 minutes Filling of heating circuit repeated 16 times in 24 hours Controls Check that the electrical element of the two sensors complies with the graph in section 8 9 Check that the electrical element of the sensor complies with the graph in section 8 9 Check that it is powered at 300 Check the pressure switch setting pressure FILL must appear when the pressure drops below 0 6 bar check that there are no water leaks from the heating system Check the pressure switch setting pressure FILL must appear when the pressure drops below 0 6 bar and must disappear when the pressure rises above 1 5 bar check that there are no water leaks from the heating system 7 13 2 Diagnostics E errors Code E01 E02 E07 E08 Lock out description NTC1 boiler temperature sensor circuit interrupted NTC2 domestic hot
51. ic hot water 29 6 2 General warnings concerning gas 50 cece cic carla 29 6 3 Gas type indicated for the boiler aaa aa NAB EELNN NENG ANA SaNESKANANAKA NASA 30 6 4 Converting the boiler from one gas type to 30 2 Table of contents E E A EN 30 HUNG NT 59 30 6 6 Checking and adjusting the gas supply pressure 30 6 7 Checking the comburant air pressure a NN ANNA AINA 31 6 8 Checking and adjusting CO2 levels 32 5 9 Adj sting the heating capacity uu 33 6 10 Domestic hot water flow rate 33 Fei 34 7 1 Adjusting the domestic et 34 7 2 Adjusting the heating 34 2441 1114 9 12 1132 00 eee ieri 34 T4 16 18 10 Mee 34 7 4 1 Climatic adjustment on which ies aa ia 34 7 4 2 Climatic adjustment precautions when making 35 7 4 3 Climatic adjustment setting of the parameters 35 7 4 4 Climatic adjustment adjustment
52. ionization electrodes So that the appliance works satisfactorily it is indispensable that the electrodes are positioned correctly refer to figure 45 the distance between the ignition electrodes A and B must be between 2 0 and 2 5 mm the distance of the ignition electrodes from the surface area of the burner must be between 5 and 5 5 mm the distance of the ionization electrode from the surface of the burner must be between 6 0 and 6 5 mm 8 6 Secondary heat exchanger for the production of d h w The production of d h w is delegated to the secondary heat exchanger detail 37 of figure 1 If this exchanger over time is no longer efficient it may be necessary to clean or replace it 8 MAINTENANCE Figure 49 Replacing the pump motor 103915mO V ATL Figure 50 Accessing the expansion tank 48 8 7 Replacement of the pump motor If it becomes necessary to replace the circulator pump proceed as follows refer to figure 49 empty the water from the heating circuit following the procedure indicated in section 8 10 access the internal components of the appliance following section 8 2 remove screws B extract pump A outwards disconnect the electrical wires from the pump unit 8 8 Checking the expansion tank
53. itted by installer 32 B70 type storage tank optional 33 expansion tank 34 circulator pump 35 safety rilief valve 36 re circulation return pipe for water heater loading to be fitted by installer 37 check valve to be fitted by installer 38 hydraulic safety unit complying with EN 1487 to be fitted by installer 39 water heater filling supply pipe to be fitted by installer 40 water heater filling return pipe to be fitted by installer 41 BWR type storage tank optional 42 expansion tank 43 safety relief valve 44 heating system discharge cock 45 NTC7 flue gas sensor 46 NTC1 boiler temperature sensor 47 NTC6 high temperature limit sensor 48 NTC3 domestic cold water sensor storage tank sensor 49 NTC2 domestic hot water outlet sensor 19 4 FUNCTIONS OF THE APPLIANCE 4 1 Intended use and functions of the appliance This condensation type gas appliance is designed to be used for central heating and producing domestic hot water for civil use Fit the boiler to the system according to the most suitable residual curve head see figures 6 and 7 The maximum output heat is always guaranteed for the production of domestic hot water since on each request the heating service switches off Follow the specific procedure in section 9 13 for the adjustment of the domestic hot water temperature Depending on the model chosen the following system types can be created A
54. l element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board Replace the command and control board Replace the command and control board Replace the command and control board Replace the command and control board If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board Replace the command and control board Replace the gas valve Invert phase and neutral If the mains frequency is other than 50Hz contact the electricity distribution company if the mains frequency is 50Hz replace the command and control board Restore the correct earthing of the system If the earth correction is already sufficient replace the command and control board Replace the command and control board Replace the command and control board R
55. ment Can be changed from 1 to 20 active only with climatic adjustment featuring room compensation See section 7 4 6 for its adjustment Can be changed 01 knobs presents 00 knobs absent Can be changed 00 display always on any other value corresponds to a delay in the switching off of the display expressed in minutes also see section 7 10 Can be changed from 00 to 03 the correspondence of the speeds of the pump with the value can be seen in figures 6 40 7 USE 7 13 Diagnostics During the routine functioning of the appliance the display 48 as per figure 1 continually shows the operating status of the appliance via the following indications PARAMETER DESCRIPTION RIGHT HAND DISPLAY Boiler in stand by mode or pause no request for heating or Boiler temperature C domestic hot water Anti freeze function active Boiler temperature Parameter not available for this boiler model Boiler temperature CAUTION system pressure too low fill system see section No display 6 1 3 py c hor aalerseniae on Domestic hot water temperature C Heating service on Heating temperature C Lock out code see section 7 12 1 for decoding Boiler in lock out mode To reset it press the button If the lock out occurs frequently contact a professionally qualified technician Error code see section 7 12 2 for decoding Boiler fault Contact a professionally qualified t
56. n only when all the room thermostats are satisfied see to an appropriate electrical system CAUTION If the appliance is installed in a low temperature system it is indispensable to follow the settings indicated in section 5 6 7 4 Climatic adjustment Viathe Installers Menu set parameter at 01 The heating supply temperature is adjusted automatically by the outside temperature sensor The relationship existing between the outside temperature and the supply temperature corresponds with the line illustrated in the diagrams shown in figures 30 and 31 In order to adjust this line to the various dwellings climatic conditions it is necessary to set all the adjustment parameters according to the subsequent sections 34 7 4 1 Climatic adjustment on which systems The Climatic adjustment is a more sophisticated and subtle setting of the thermostatic adjustment and it is able to use the performance of the boiler better and is suitable for the following types of systems small systems with radiators and with a room whose temperature is characteristic of all the other rooms The room thermostat takes steps to make opportune corrections to the room temperature switching the boiler pump on and off large systems with radiators where each zone is controlled by its own room thermostat and the boiler pump is shutdown only when all the room thermostats are satisfied see to an appropriate electrical s
57. nal components of the appliance following section 8 2 disconnect the fittings A and unscrew screw C remove spring E and extract the by pass pipe D towards the back of the appliance remove the fork extract the servomotor H unscrew fitting unscrew screw L extract the entire block of the 3 way valve F outwards taking care with the gaskets M see figure 53 during reassembly take care with the positioning of the gaskets M 8 MAINTENANCE 8 10 Draining the heating side of the appliance To empty the boiler from the heating side proceed as follows turn off the boiler allow the water inside to cool by Switching off the room thermostat and turning control 531 as per figure 1 to minimum Wait until the display 48 as per figure 1 shows a temperature of at least 40 access the internal components following the procedure indicated in section 8 2 connect a flexible rubber hose to the discharge cock A see figure 54 and place the other end in a sink plughole or similar open discharge cock A open the bleeding valves of the radiators Begin with the upper radiators and continue with the lower ones after draining out all the water close the radiator bleed valves and discharge cock CAUTION Do not recover and or re use water drained from the heating circuit for any purpose as it c
58. nd floor Do not install the sensor above doors windows or ventilation outlets nor directly under balconies or gutter pipes Do not plaster the external temperature sensor Do not install the sensor on walls without overhangs or not protected from rain If the sensor is installed on a wall still to be plastered it is necessary to install it with an adequate shim or remove it before plastering Figure 18 Correct positioning of the room thermostat time programmable thermostat 18 To connect the cable of the outside temperature sensor proceed as follows lay a bipolar electrical cable with a minimum section of 1 5mm2 which leads from the boiler to the external temperature sensor The maximum length permitted is 20 m For longer lengths up to 100 m itis necessary to use a shielded cable with an earthed shield CAUTION Since the cables are subject to low safety voltage 24Vcc they must run through ducts different from the 230Vac power supply cables connect the bipolar cable to terminals SE as shown in figure 17 detail connect the bipolar cable to the ends of the external temperature sensor Set the boiler so that it detects the outside temperature sensor as follows press down the button for 12 seconds until the display blinking and shows then press and release the button several times until the following parameter eo using the and gt keys change the
59. nect the electrical power supply cable proceed as follows refer to figure 17 use a three pole cable with double insulation and a minimum cross section of 1 5 mm2 remove the boiler casing following the instructions given in section 8 2 to rotate the panel A toward the front of the boiler acting on the stirrups B remove the screw D and open the cover E lay the power supply cable A as shown in figure 17 strip the cable being careful to leave the earth wire yellow green 20 mm longer than the other two connect the yellow green cable to the earth terminal terminals connect the brown cable to terminal L1 terminals connect the blue cable to terminal N terminals CAUTION If the L1 phase conductor is inverted with the neutral N conductor the boiler will lock out displaying error code E21 CAUTION If the earthing system is not efficient the boiler will lock out displaying error codes L05 E42 or E23 depending on the entity of the inefficiency 5 INSTALLATION 5 14 2 Choosing the room thermostat time programmable thermostat The boiler is designed to function with any type of room or time programmable thermostat which has contacts for the boiler cable connections and the following features open closed ON OFF clean not powered closed when heating is required electrical specifica
60. nning of the season The calculation algorithm envisages that if the Calculated temperature is lower than the Minimum heating temperature parameter U b the heating service switches off When the Calculated temperature once again exceeds the Minimum heating temperature parameter b the heating service switches back on If the heating services switches off or comes on differently with respect to 35 requirements just use control 31 as per figure 1 in order to raise or lower the calculated temperature and match the Minimum heating temperature in advance or on a delayed basis 7 4 6 Climatic adjustment with room compensation By means of the Installers Menu see section 7 11 adjust the oss to 02 Everything functions exactly as in the previous sections relating to Climatic adjustment with the sole difference that now the boiler pump is permanently on The opening of the room thermostat contact translates into a parallel movement downwards of the line as per figures 30 and 31 The opening of the room thermostat contact translates into a parallel movement downwards of the line as per figures 7 11 The n parameter can adopt values ranging between 1 C and 20 The suggested values for this parameter are 10 C for radiator systems high temperature 3 C for radiant panel systems low temperature Values of this parameter which are too high may translate into in
61. of water a glassful via the flue gas discharge or opening as per Figure 44 8 MAINTENANCE _ ag Figure 44 Dismantling the fan burner unit Figure 45 Positioning of electrodes on burner 47 8 4 Cleaning the burner and primary heat exchanger flue gas side To correctly clean the burner and the heat ex changer flue gas side proceed as follows access the internal components following instructions in section 8 2 unscrew bolt D as per figure 44 disconnect the wires from the ignition sparkplugs and the wire from the detection plug see figure 1 details 42 44 and 45 disconnect the wire from the safety sensor as per figure 44 undo the four nuts as per figure 44 extract the entire fan and burner unit detail A as per figure 44 use a cylindrical brush with plastic bristles to clean the inside of the combustion chamber detail of figure 44 use a vacuum cleaner to remove any unburned residue from the combustion chamber detail of figure 44 using the same vacuum cleaner clean the surfaces of the burner and around the electrodes reassemble the components by proceeding in reverse order open the gas cock restore normal electrical power check that there are no gas leaks between the removed joints 8 5 Correct positioning of the ignition and
62. ostat intervenes and the boiler will show block L06 This could also occur in the event that domestic water analysis is carried out if the domestic water pressure is low or the temperature of the domestic cold water is very high In order to avoid this inconvenience it is necessary to set the heating output to the effective needs of the system as indicated in the following section and analyze the CO2 or the combustion efficiency setting the forcing mentioned previously at t letter t with dash in middle or S letter S with dash in middle for domestic water 6 OPERATING 6 9 Adjusting the heating capacity The boiler has been constructed with an intelligent conception of the adjust ment of the output heating in relation to the effective requirement of the system therefore it does not need adjusting 2 However during the bringing onto stream BOILER MODEL S of the system the boiler runs for a brief 8 5 Necessary If one wishes to limit the maximum power power kW 15 24 34 45 to the effective maximum load B 44 97 for the system just operate on the parameter found on the installers menu 42 92 see section 7 12 40 86 The parameter can be adjusted 38 81 between 1 and 100 corresponding respectively to the minimum and 36 76 maximum output Read the correct 34 96 TO parameter on
63. ot water system electrical connections the connection of the discharge for condensation produced by the boiler electrical connection to the room thermostat possible connection of the safety 7 7 relief valve discharge 1 y 18 Bl pee possible connection of the external To d S ni di temperature sensor 135 170i 73 91 65 58 58 65 73 410 5 3 4 models 24 and 1 models 34 1 3 4 models 24 and heating return 1 models 34 heating supply 10 area for power supply cable 2 1 2 domestic hot water 11 BWR supply pipe absent in NOVADENS B and C models present only on NOVADENS B models 3 3 4 gas 12 BWR return pipe 4 1 2 domestic cold water present only on NOVADENS B models 14 positions available for boiler support Figure 10 Boiler dimensions and fittings distances 12 5 INSTALLATION 5 4 Supply and return CAUTION This boiler is equipped with a safety relief valve set at 3 bar Therefore it must not be installed with a radiator positioned at a manometric high higher than 30 m AN CAUTION COSMOGAS cannot be held responsible for any damage caused by incorrect use of additives in the heating system AN CAUTION The system downstream from the appliance must be made of materials which can withstand temperatures up to 97 Otherwise e g plastic piping the boiler must be fitted with a device to cut out
64. ould be contaminated 110518m0 Figure 54 Heating circuit discharge cock 8 11 Draining the domestic side of the appliance To empty the boiler from the domestic side proceed as follows close the main domestic cold water supply cock of the house open all the hot and cold water cocks in the house ensure that at least one of these is at a lower level than the boiler 8 12 Forcing So as to carry out specific checks dealt with case by case in the manual it is possible to force the functioning of the appliance 8 13 Auto purging It is possible to re set the Ko procedure by pressing keys and together for 10 seconds until the letter F appears on the display Then press 27 8 14 It is possible to generate the start up of justthe fan by pressing keys and together for 10 seconds until the letter F appears on the display Now the fan will remain on for 10 minutes In order to exit in advance from the forcing of the fan press the key 50 8 15 Minimum and maximum output It is possible to force the functioning of the appliance to its minimum or maximum output both during the heating service and during the domestic hot water service proceed as follows generate a request for the service you wish to force heating switch on the room thermostat and turn control 31 of figure 1 to maximum domestic hot water turn control
65. r storage tank loading 11 Hydraulic safety unit to be fitted by installer 12 Supply pipe to heating system 13 Return pipe from heating system 14 Temperature sensor socket Figure 20 hydraulic connection to BWR C type storage tank 102417m2 5 16 Connecting the boiler to the BWR C type storage tank Only the NOVADENS B and NOVADENS B0834 model boilers can be connected to a BWR type storage tank The water connection must be carried out as per figure 20 For the electrical connection proceed as follows refer to figure 21 disconnect the electricity supply to the boiler access the internal components and the electrical components of the boiler following the specific section 8 2 move switch 1 to position B ON Remove the cable from the sonde 17 of figure 1 lay the bipolar cable with a minimum 1 5mm2 section which goes from the boiler to the temperature sensor of the storage tank and connect it on the boiler to terminals 15 and 16 SB connect the other end of the cable to the temperature sensor of the storage tank insert the probe of the temperature sensor into the socket of the storage tank see figure 20 detail 14 5 16 1 Prevention against Legionnaires disease See chapter 5 15 1 ectrical connection to a B70C or B
66. re of no greater than 50 mbar If testing of the gas system must be carried out at a pressure nigher than 50 mbar use the cock situated immediately upstream from the boiler to isolate the same from the system Figure 10 shows the position of the appliance gas fitting The sections of piping making up the gas supply system must always provide sufficient gas to cover the required maximum 5 INSTALLATION Figure 12 Gas and water connections 14 5 8 Assembling the appliance Refer to figure 11 place the paper template provided with the appliance against the wall ensure that the template is square with the room mark holes for the wall dowel plugs and the hydraulic fittings remove the paper template drill the holes A and insert the wall dowel plugs carry out the hydraulic and gas connections for the boiler hang the boiler on the dowel plugs carry out the hydraulic connections 5 9 Gas and water connections The boiler comes supplied with the standard fittings illustrated in figure 12 where A heating supply B domestic hot water C gas inlet D domestic cold water E gas inlet cock EN 331 type approved F domestic cold water cock heating return condensation discharge pipe 5 INSTALLATION Fi
67. re system ON Heating service functioning between 20 and 45 high temperature system 7 OFF Appliance TYPE change service inhibited ON Appliance TYPE change service enabled 8 OFF Position not available for this series of appliances ON Position not available for this series of appliances 1 6 Timings of the various functions In order to protect the life span of the appliance improve the comfort generated and increase energy saving timings have been introduced during the functioning These timings are Post circulation pump each time the room thermostat determines a conclusion of the heating service the pump continues to function for 3 7 7 Pumps and 7 9 Empty switch valve blockage 10 rotection uring the Summer period the Saving circulator switches on once a day In order 10 reduce energy wastage for around 15 seconds in order to generated by the display 48 as avoid any incrustations blocking it per figure 1 it is possible to switch it At the same time the switch valve is permanently off with the exception activated for the same reason of when it displays errors or settings In order to switch it off proceed as Energy minutes i follows Heating delay each time the domestic 7 8 A n t fre eze access the Installers Menu see hot water service finishes there is a protection section 7 12 waiting time of 2 minutes before the re sur 6 ati i activation of the heating service set th
68. rom the boiler to the CRO4 remote control The cable must also be protected by means of the earthing of the protection and the maximum length permitted is 100 metres dismantle the casing and access the electrical terminal board following the specific instructions in section 8 2 connect the 2 ends of the cable to the terminals of the boiler see figure 17 connect the other 2 ends of the cable to the terminals of the remote control follow the instructions on the remote control CAUTION Since the cables of the remote control are subject to extremely low security voltage 24Vcc they must pass through ducts different from the 230Vac supply cables 19 Once the remote control has been connected all the room temperature adjustments and domestic water temperature operations must be carried out directly on the same Accordingly remember to closely follow the instructions contained on the CR04 remote control 5 14 6 Installation of the CR04 remote time control on the boiler If the boiler has been purchased with the CR04 type time control in order to enable the same it is necessary to install the Opentherm interface board on the boiler following the instructions contained on the remote control 5 INSTALLATION 5 15 Connecting the boiler to the B70C type water heater optional The boiler can be immediately or subsequently connected to a B70C type storage tank manufactur
69. rs in order to see the result the nearer the adjustment line draws to the real needs of the building the more the heating of the building will be comfortable and the energy saving high by means of control 31 in figure 1 it is however possible to carry out the small corrections b shown in figures 30 and 31 that is shift the parallelism of the line more or less in stages of 1 C up to 10 C 7 4 3 Climatic adjustment setting of the parameters By means of the user menu see section 7 10 set n UJ The angle of the line which can be adjusted between 0 1 and 5 0 The suggested starting values are 0 6 for low temperature systems 1 6 for high temperature systems D Minimum heating temperature which can be adjusted between 20 C and 60 C The suggested starting values are 30 C for low temperature systems 40 C for high temperature systems U C Maximum heating temperature which can be adjusted between 30 C and 80 C The suggested starting values are 45 C for low temperature systems 80 C for high temperature systems By means of the installer menu see section 7 11 set N Reaction of the supply temperature with respect to the external temperature changes which can be adjusted between 1 C and 10 C A low Reaction value makes it possible to have a constant temperature of the dwelling but slow with regards reaching full
70. s of the various climatic zones 45 7 4 5 Climatic adjustment switching on and off the heating service 35 7 4 6 Climatic adjustment with room compensation 35 7 5 Boiler settings SWITCHES colla iaia 37 7 6 Timings of the various TUNMCHONS inline 37 7 7 Pumps and switch valve blockage protection 37 28 protection Ka E AA 37 e o o omm 37 ECC porc 37 Ad area 38 125 Installers MENU raider 39 Fx LAB lla 41 17 13 1 Diagnostics L OCK OU S Pm 42 8 MAINTENANCE 45 General pese T 45 8 2 Disassembling the casing and accessing internal components nne 45 8 3 Cleaning of the condensation collecting trap 46 8 4 Cleaning the burner and primary heat exchanger flue gas 47 8 5 Correct positioning of the ignition and ionization electrodes 47 8 6 Secondary heat exchanger for the production of 0
71. stability of the room temperature Too low values may make the action of the room thermostat uninfluential Climatic adjustment with room compensation can be used in all the cases envisaged by section 7 4 1 with the advantage that the on going running of the pump manages to stabilize and standardize the room temperatures especially in the event that certain loops of the heating system have hydraulic elements considerably greater than others 7 USE 2 90 10232200 c o 2 E OA Inclination of the line 2 Ob Minimum heating S temperature 09 Oc Maximum heating 20 45 40 5 0 5 10 15 20 25 30 temperature External temperature br Fix point of the angle Sa m fulcrum of the line b parallel shift of the line possible using the command on the panel Supply temperature C 20 15 10 5 0 5 10 15 20 25 30 External temperature Figure 38 Graphs of the climatic adjustment for high temperature systems 55 102322m0 a 5 a O Q 5 OA Inclination of the line Ob Minimum heating S temperature Maximum heating 20 45 40 5 0 5 10 15 20 25 30 temperature External temperature C br Set point of the angle m 10282210 8 fulcrum of the line b parallel shift of the line possible using the command on the
72. t Refer to figure 9 for minimum clearance distances for installation and future maintenance 4 FUNCTIONS OF THE APPLIANCE Y 10242210 a 00 0 0 2 0 4 0 6 0 8 1 1 2 14 1 6 18 Q m3 h Figure 6 Curve of the pump with 6 metres head 10242210 b 0 02 04 0 6 0 8 1 Q m3 h Figure 7 Curve of the pump with 7 metres head 0 5 10 15 20 25 Flow l min Figure 8 Curve of the of pressure for the domestic side 111 4 2 Characteristic curves of heating system s residual head Each standard boiler is fitted with its own specific circulator pump The residual head at the boiler connections is shown in graph form in figures 6 On demande we can supply the boiler with a 7 m head pump see fig 7 The diagram comprises 4 curves which can be selected from the control panel in the following manner press the button for 12 seconds until parameter is displayed the display panel will start to blinking continually press and release the button in order to scroll D the list of parameters until the parameter is displayed once the parameter has been identified it can be changed using the or key choose the desired value of the pump speed Press the Reset button in order to confirm the modified data and exit from the menu 4 3 Characteris
73. t temperatures ranging between 20 and 45 An example of this type of System is shown in figure 2 F NOVADENS B0834 By means of this boiler a system can be created for the production of domestic hot water using a storage tank BWR or equivalent model and a heating system with heating elements functioning at temperatures ranging between 20 and 30 An example of this type of system is shown in figure 4 G NOVADENS C0834 By means of this boiler a system can be created for the only heating with heating elements functioning at temperatures ranging between 20 C and 45 C An example of this type of system is shown in figure 3 In this model is moreover possible to connect also after the installation en storage tank model BWR filled up through one external valve to the boiler H NOVADENS P0834 By means of this boiler a system can be created for the production of instant domestic hot water and a heating system with heating elements functioning at temperatures ranging between 20 C and 45 C An example of this type of system is shown in figure 2 In all the boiler versions described previously connection of the domestic hot water service is not indispensable if the boiler is required solely for central heating purposes it is sufficient to connect the cold water pipe so as to fill the heating system and close the fitting of the d h w outlet All the NOVADENS or NOVADENS
74. t heat 50 30 Efficiency at minimum output heat 80 60 Efficiency at minimum output heat 50 30 Efficiency at minimum output heat 37 30 Certified efficiency 92 42 CEE Chimney loss with burner on 80 60 Chimney loss with burner off Casing loss with burner on Casing loss with burner off Gas flow rate Natural gas LP Gas Gas supply pressure mbar Natural gas LP Gas Minimum gas supply pressure mbar Natural gas LP Gas Maximum gas supply pressure mbar Natural gas LP Gas Comburant air pressure Natural gas LP Gas Water capacity of the primary heat exchanger Weight of primary heat exchanger Water capacity of the secondary heat exchanger Weight of secondary heat exchanger D h w output heat D h w production with semi accumulation in first 10 min dt 30 Instant d h w production dt 30 Design temperature Maximum heating temperature Minimum heating temperature Maximum heating pressure PMS Minimum heating pressure Maximum pressure of domestic hot water circuit Minimum pressure of domestic hot water circuit Capacity of expansion tank Nominal power supply voltage Nominal power supply frequency Absorbed electric power Degree of electrical protection Flue gas pipes diameter split Max length flue gas pipes split 80 Max length flue gas pipes split 60 Flue gas pipes diameter coaxial Max length flue gas pipes coaxial Equivalent length of one elbow CO 096 O2 with natural gas
75. ted heating temperature if climatic adjustment active see section 7 2 or display of temperature set via the control 31 as per figure 1 Display of domestic hot water temperature set via the control 30 as per figure 1 Display of last error registered Display of last block which occurred 38 INFORMATION ON DISPLAY 48 of figure 1 Setting range 0 1 5 0 Setting range see section 7 4 3 Setting range see section 7 4 3 Only display The regulation is carried out using the control 31 as per figure 1 It can adopt values ranging between 10 C and 10 C Only display It can adopt values ranging between 20 C and 80 C Only display It can adopt values ranging between 40 C and 70 C see also section 7 1 Only display It can adopt the values indicated in section 7 13 2 Only display It can adopt the values indicated in section 7 13 1 7 USO 39 7 12 Installers menu LN Changing these parameters could cause the boiler and therefore the system to malfunction For this reason only a technician who is sensitive to and has in depth knowledge of the appliance can change them The boiler s micro processor makes this menu of parameters available to the technician for the analysis of the functioning and adjustment of the appliance to the system When entering the Installers Menu the display of the parameters 48 as per figure 1 blinking to indicate that
76. the domestic hot water can be set ranges from 45 to 70 7 2 Adjusting the heating system By means of the parameter present in the Installers Menu see section 7 12 it is possible to select the various functioning modes of the heating service CH 00 Thermostatic adjustment the heating supply temperature is adjusted manually using control 31 as per figure 1 The opening and closing of the room thermostat correspondingly shuts down or starts up the boiler pump so as to carry out the adjustment of the room temperature CH 01 Climatic adjustment the heating supply temperature is adjusted automatically by the outside temperature sensor according to an algorithm corresponding to figures 38 and 39 The opening and closing of the room thermostat correspondingly shuts down or starts up the boiler pump When the Calculated temperature drops below the Minimum heating temperature the heating service ends It automatically starts up when the Calculated temperature once again rises above the Minimum heating temperature CH 02 Climatic adjustment with room compensation the heating supply temperature is adjusted automatically by the outside temperature sensor according to an algorithm corresponding to figures 38 and 39 The opening of the room thermostat reduces the heating supply temperature by a set value The boiler pump always remains working When the Calculated temperatur
77. the pump when it reaches the maximum permitted temperature Thoroughly wash out the system before connecting the heating pipes to flush out any deposits hemp radiator casting residue etc which might damage the appliance Thorough flushing is also required when replacing an appliance Figure 10 illustrates the position of the supply and return pipes Install a metallic mesh filter on the return pipe to prevent any residue from the system returning to the boiler Do not use the appliance for adding any type of additive to the system 5 5 Radiant panel systems or low temperature systems CAUTION When the boiler is installed in a low temperature system it is indispensable to set the switch 6 in the ON position see chapter 7 5 By means of this setting the boiler will set the temperature towards the supply of a temperature between 20 C and 45 No setting operation from the control panel even by means of the climatic setting will be able to supply water ata temperature higher than 45 CAUTION If the boiler is installed in a radiant panel heating system with plastic piping precautions must be taken against corrosion caused by water oxygenation check that the system has plastic piping with a permeability to oxygen of no higher than 0 1 g m3 at 40 If the piping does not comply with these specifications the radiant panel circuit must be isolated from the boiler by a plate heat exchanger
78. tic curve of the domestic side Every boiler offers certain resistance to the passage of the domestic water see graph flow pressures of figure 8 The installer or the engineer must take account of this in order to ensure the correct domestic water flow to the utilities 5 INSTALLATION 115210m0 380 14 114110m4 a 687 5 1 Opening the packaging The appliance is supplied in a box Open it up following the instructions given on the closing flaps 5 2 Dimensions and clearances for installation Leave an area free around the boiler for carrying out installation or maintenance activities as shown in figure 9 5 3 Choosing the point of installation CAUTION The boiler must be installed exclusively on a solid vertical wall able to bear its weight The appliance must be installed indoors or protected from atmospheric agents including rain wind sun and especially frost When choosing the room and position for installation account must be taken of the following factors the connection of flue gas discharge air intake pipes the connection of gas supply pipe the connection to the water mains connection of the system to the central heating the connection to the domestic h
79. tion of the CRO4 remote time control on the boiler 19 5 15 Connecting the boiler to the B70C type water heater optional 20 5 15 1 Prevention against Legionnaires disease iii 20 5 16 Connecting the boiler to the BWR C type storage tank 21 5 16 1 Prevention against Legionnaires disease Licia inte 21 ap et I 22 5 17 1 Split 80 8 system sciare 23 5 17 2 Split 80 80PP system available 24 5 17 3 Split 80 80PP system installation examples mH 25 5 17 4 Coaxial 60 100PP system 26 5 17 5 Coaxial 60 100 PP system available acceSsSOries i 27 5 17 6 Coaxial 60 100PP system installation examples i 28 br cer 29 AREE PR oo 29 6 1 1 User instructions 29 6 1 2 Filling of the condensation dischalgetrap ilaria 29 6 1 3 Filing the heating Syste ROO SES 29 6 1 4 Filling of the secondary heat exchanger of the domest
80. tions 24Vac 1A 5 14 3 Connecting the room thermostat time programmable thermostat Install the room thermostat in a part of the house where the temperature is as near to average as possible and in any event not an area subject to sudden temperature changes away from outside windows or doors see figure 18 To connect the room thermostat cable proceed as follows refer to figure 17 use a bipolar cable with a minimum cross section of 1 5 mm2 which leads from the boiler to the room thermostat time programmable thermostat i MT INT NAN m SINT TS EA remove the boiler casing according to the instructions given in section 8 2 lay the electrical cable exactly as shown in figure 17 get the cable to pass via a free cable clamp not used by other wires connect the 2 ends of the cable to the TA terminals see figure 17 detail CAUTION Since the cables of the room thermostat time programmable thermostat are subject to low safety voltage 24Vcc they must run through ducts different from the 230Vac power supply cables 5 14 4 Installing the outside temperature sensor on request Install the outside temperature sensor outside the house on a wall facing NORTH or NORTH EST at a height of between 2 and 2 5 metres from the ground on buildings with several floors install near the upper half of the seco
81. uit short circuited NTC6 boiler temperature sensor circuit short circuited E2prom memory damaged Flame presence with gas valve closed Phase and neutral inverted Mains frequency other than 50 2 earth connection Erroneous temperature reading Erroneous temperature reading Erroneous temperature reading Erroneous temperature reading Programme error or earth connection insufficient Boiler TYPE selection error Reset button pressed too often in a short period of time Controls Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 17 check the electrical connection cables between the probe and the command board Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 17 check the electrical connection cables between the probe and the command board Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 17 check the electrical connection cables between the probe and the command board Checkthatthe electrical element of the sensor complies with the graph indicated in section 8 17 check the electrical connection cables between the probe and the command board Check the electrical frequency of the system Check the correct earthing of the system Check the correct earthing of the system Check the JUMPERS selector switch as per section 7 5 44 Solutions If the electrica
82. until the level of CO2 stabilizes compare the reading with that given in the table in section 9 headed CO2 levels If the reading differs from that in the table it must be brought within the range ofthe values given in the table in section 9 Proceed as follows use a screwdriver on screw E see figure 33 turn clockwise in order to reduce the level of CO2 Turn counter clockwise in order to increase the level of CO2 press the key until the display shows 5 if tested in domestic mode Now the boiler will work for 10 minutes at minimum power Check the CO2 value it must drop by 0 596 with respect to the value obtained at maximum power Otherwise use screw F in figure 33 to correct the CO2 value turn in a clock wise direction to increase turn in a counter clockwise direction to decrease Once again check the CO2 at maximum power and if necessary carry out a further adjustment Once finished seal the screws E and as in figure 33 with red paint or a similar system 32 press the button to return the boiler to normal operating conditions CAUTION During this phase if the power supplied to the boiler is much higher than the power absorbed by the system the boiler will switch off in continuation in order to reach the maximum temperature permitted 45 C for low temperature systems 85 C for radiator systems or the flue gas safety therm
83. ures at the end of the manual under the heading type and on the boiler rating plate again under the heading type The symbols used to define the type of discharge system are as follows see also fig 22 C13 coaxial through vertical wall C33 coaxial through the roof C43 separate with discharge in the chimney intake through another same channel C53 separate discharge through roof and intake through wall or in two places with potentially different pressure C63 the boiler can be fitted to approved intake and discharge pipes of another manufacturer C83 separate with intake through the wall or another point independent of venting for other appliances with discharge into the chimney flue During operation especially in Winter again due to high efficiency the boiler may discharge white smoke This is a purely natural phenomenon and not a reason for concern as it is steam from the gas fumes condensing on contact with the outside air 5 INSTALLATION 5 17 1 Split 80 80PP system polypropylene The standard appliance is not supplied with fittings for connecting flue gas discharge outlets air intakes A special kit is available on request for connecting the boiler to the split 80 80PP system to be installed following figure 23 Fitting A can freely turn 360 degrees thereby guaranteeing optimum installation versatility is advisable to install AISI 316L type stainless steel pip
84. ustion Switch off the appliance Ventilate the room Call a qualified technician Installation modifications The installation setting and modification of the gas appliance must be carried out by qualified technicians in compliance with local and national norms and these instructions Never leave any packaging or replaced parts within the reach of children Seal the setting devices after each setting It is compulsory to connect the appliance s discharge pipe to a chimeney Failure to observe this rule may seriously risk the safety of individuals and animals Flue pipes must not be modified in any way The user in accordance with these instructions must keep the appliance in satisfactory running order and ensure reliable safe operating The user is responsible for employing a qualified technician to carry out maintenance work on the appliance in compliance with local and national norms and the matters stated in this manual We highly recommend arranging a regular maintenance contract with a qualified technician The manufacturer cannot be held responsible for any damage to people animals or property caused by incorrect installation or inadequate maintenance Use the switches to disconnect the appliance from the mains before carrying out any cleaning or maintenance operations Do not obstruct the intake discharge pipe ends Explosive or easily inflammable products Do not store or use e
85. ut in compliance with current safety standards This is an essential safety requirement which must be checked If in doubt have the electrical system thoroughly checked by a qualified technician Have a qualified technician check that the electrical system is adequate for the electric power indicated on the rating plate required by the boiler The boiler must be connected to the mains electricity by connection using movable plug Do not use adapters multiple plugs or extensions etc The boiler must be connected to the mains electricity by a three pole electrical cable with double insulation and a minimum cross section of 1 5 mm2 resistant to a minimum temperature of 70 feature T To connect the boiler to the mains electricity use a bipolar switch with a contact opening distance of at least 3mm near to the appliance in compliance with current standards on the subject Respect the polarity between live and neutral when connecting the boiler Ensure that heating and water piping is not used as earth plates for the electric and telephone systems This piping is completely unsuitable for this purpose and in addition could rapidly lead to serious corrosion damage to the boiler piping and radiators CAUTION The boiler is not provided with any protection against lightening strikes Figure 17 Electrical connections 17 5 14 1 Connecting the power supply cable To con
86. ve liability that the product WARRANTY No GAS BOILER MODEL MANUFACTURE DATE _ forming the subject matter of this declaration is compliant with the model described in the 6 type Examination Certificate with reference to the table headed EC type certificate PIN in section 9 and in accordance with the provisions of the following Directives Gas Appliances 90 396 EEC Efficiencies 92 42 EEC Low Voltage 2006 95 EC Electromagnetic Compatibility 2004 108 EEC The warranty number matches the serial number This declaration is issued in accordance with that established by said Directives Meldola FC ITALY Date of manufacture 55 COSMOGAS s r l L da Vinci 16 47014 MELDOLA FC ITALY info cosmogas com www cosmogas com
87. vice Heating service functioning mode Reaction to external temperature changes Angle fulcrum of climatic adjustment line Reduction of temperature generated by the opening of the room thermostat Boiler knobs status Display 48 as per figure 1 energy saver Pump speed selector switch for just the heating service INFORMATION ON DISPLAY 48 OF FIGURE 1 Value in C cannot be changed Value in C cannot be changed Value in C cannot be changed Value in C cannot be changed displayed only if climatic adjustment is active as per section 7 2 Value from 0 to 99 at 30 it corresponds to a current of 1uA at 99 it corresponds to a current of 5 5 uA cannot be changed Value in C cannot be changed Value in C cannot be changed Can be changed in accordance with the instructions indicated in the gas conversion kit 00 contact open heating service off 01 contact closed heating service on Value in g 1 100 rpm 100 cannot be changed Adjustable according to the instructions of section 6 9 Can be changed 00 thermostatic adjustment see section 7 3 01 climatic adjustment see section 7 4 02 climatic adjustment with room compensation see section 7 4 6 Can be changed from 1 to 10 active only with climatic adjustment See section 7 4 3 for its adjustment Can be changed from 9 to 65 active only with climatic adjustment See section 7 4 3 for its adjust
88. xed If the pressure switch is not correctly set it must be replaced if the system has a leak it must be fixed Solutions If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board If the electrical element of the probe does not comply it must be replaced if the electrical circuit is damaged it must be repaired if the previous two cases do not apply replace the command and control board 7 USE E Code E11 E12 E13 E14 E15 E16 E17 E18 E19 E20 E21 E22 E23 E30 E31 E32 E33 E42 E50 E51 Lock out description NTC1boiler temperature sensor circuit short circuited NTC2 domestic hot water temperature sensor circuit short circuited Erroneous temperature reading Erroneous temperature reading Erroneous temperature reading Erroneous temperature reading cold water temperature sensor circ
89. xplosive or easily inflammable materials such as paper solvents paints etc in the same room as the boiler In the event of a breakdown In the event of breakdown and or malfunctioning of the appliance disconnect it do not attempt to repair it or intervene in any way whatsoever Contact a qualified technician If repairs require parts to be replaced only original spares must be used Failure to observe the above may compromise the appliance s safety Qualified technicians Qualified technicians are personnel with specific technical training in the heating system component sector and with regards to domestic hot water production for public use fuel gas systems and electrical systems These individuals must have the legally required qualifications This booklet forms an integral and essential part of the product and must be carefully kept by the user for any future consultation Ensure that this booklet is handed over to the new owners and or installer if the appliance should change hands or be moved for any reason whatsoever Any optional extras or kit fitted subsequently must be original Cosmogas spares This appliance must only be used for the purpose it has been expressly designed for heating water for closed circuit systems for centrally heating public and private buildings producing sanitary and domestic hot water for civil use 3 The manufacturer cannot be held responsible contractually or otherwise for
90. ystem small systems with radiant panels low temperature with a room whose temperature is characteristic of all the other rooms The room thermostat takes Steps to make opportune corrections to the room temperature switching the boiler pump on and off In the event of use of the time programmable thermostat it is necessary to consider that the radiant panel systems have an extremely high thermal inertia therefore itis necessary to adapt any advances of the start up of the heating by also using the Reaction n parameter in order to speed up any full operations situation large systems with radiant panels low temperature where each zone is controlled by its own room thermostat and the boiler pump is shutdown only when all the room thermostats are satisfied see to an appropriate electrical system CAUTION If the appliance is installed in a low temperature system it is indispensable to follow the setting in section 5 6 7 USE 7 4 2 Climatic adjustment precautions when making adjustments In order to carry out the correct automatic setting of the supply temperature it is advisable to immediately set the values suggested further on for the setting of the line of figures 30 and 31 Subsequently if these values do not provide a satisfactory result proceed with the appropriate adjustments bearing in mind that each parameter must be set in small degrees after each change wait at least 24 hou

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