COSMOGAS MYDENS 60 Installation, Use And Maintenance Manual

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62403579 - R00 28-11-2013_GB

INSTALLATION, USE AND MAINTENANCE MANUAL

MYDENS 60

GAS WALL-MOUNTED CONDENSING BOILER

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MYDENS 60

COSMOGAS

INDEX

1 - GENERAL SAFETY RECOMMENDATIONS ..................................................................................................4

1.1 - National installation laws and regulations ................................................................................................................ 4

2 - GENERAL INFORMATION .............................................................................................................................5

2.1 - Presentation ............................................................................................................................................................. 5

2.2 - Overview of the models ............................................................................................................................................ 5

2.3 - Manufacturer ............................................................................................................................................................ 5

2.4 - Key for the symbols used ......................................................................................................................................... 5

2.5 - Maintenance ............................................................................................................................................................. 5

2.6 - Warranty ................................................................................................................................................................... 5

3 - MAIN COMPONENTS .....................................................................................................................................6

4 - OPERATION ...................................................................................................................................................8

4.1 - Operation and intended use of the appliance .......................................................................................................... 9

4.1.1 - Modulating pump ........................................................................................................................................ 9

4.1.2 - Hydraulic separating device ........................................................................................................................ 9

4.1.3 - Production of domestic hot water ................................................................................................................ 9

4.1.4 - Plant types .................................................................................................................................................. 9

4.2 - Precautions during installation ................................................................................................................................. 9

4.3 - Characteristic curve of the residual head at the central heating plant ................................................................... 10

4.4 - Head losses characteristic curve ............................................................................................................................11

5 - INSTALLATION .............................................................................................................................................14

5.1 - Opening the packaging .......................................................................................................................................... 14

5.2 - Dimensions and minimum safety distances ........................................................................................................... 14

5.3 - Choosing the place of installation .......................................................................................................................... 14

5.4 - Mounting the appliance .......................................................................................................................................... 15

5.5 - Flow and Return ..................................................................................................................................................... 15

5.6 - Water supply .......................................................................................................................................................... 16

5.6.1 - Recommendations of the features of the water inside the plant ............................................................... 16

5.6.2 - For correct plant operation it is necessary to ascertain that: ................................................................... 16

5.6.3 Treatment of the water in the thermal plants for civil use ............................................................................ 17

5.7 - Draining the heating circuit ..................................................................................................................................... 17

5.8 - Expansion Tank ...................................................................................................................................................... 17

5.9 - Low temperature plants (or on the oor) ................................................................................................................ 17

5.10 - Gas ....................................................................................................................................................................... 17

5.11 - Condensate drain ................................................................................................................................................. 18

5.12 - Safety valve .......................................................................................................................................................... 18

5.13 - Water, gas connections ........................................................................................................................................ 18

5.14 - Electric connections: generalities ......................................................................................................................... 19

5.14.1 - Power supply cable connection .............................................................................................................. 20

5.14.2 - Choice of the room thermostat/chronothermostat ................................................................................... 20

5.14.3 - Connecting the room thermostat/chronothermostat ................................................................................ 20

5.14.4 - Installing the external temperature sensor (on request) ......................................................................... 21

5.15 - Connection of the boiler with Indirect Water Heater and coil ............................................................................... 22

5.15.1 - Anti- legionella ......................................................................................................................................... 22

5.16 - Burned gas exhaust and combustion agent air intake pipe ................................................................................. 23

5.16.1 - Type of intake/exhaust B23 ..................................................................................................................... 24

5.16.2 - “Split 80/80PP” System (polypropylene) (Type C43; C53; C83) ............................................................. 25

5.16.3 - “Split 80/80PP” System (Type C43; C53; C83): accessories available ................................................... 26

5.16.4 - “Split 80/80PP” System (Type C43; C53; C83): installation examples ................................................... 27

5.16.5 - “80/125PP vertical coaxial” System (polypropylene) (C13; C33) ............................................................ 28

5.16.6 - “80/125PP Coaxial” System: accessories available ................................................................................ 29

5.16.7 - “80/125PP Coaxial” System: installation examples ................................................................................ 30

6 - OPERATING .................................................................................................................................................31

6.1 - Operating ............................................................................................................................................................... 31

6.1.1 - User instructions ....................................................................................................................................... 31

6.1.2 - Filling the condensate drain siphon .......................................................................................................... 31

6.1.3 - Filling the central heating plant ................................................................................................................. 31

6.2 - General recommendations regarding the supply of gas ........................................................................................ 32

6.3 - Type of gas for which the appliance is adjusted ..................................................................................................... 32

6.4 - Conversion of the appliance from one type of gas to another ................................................................................ 33

6.5 - Ignition .................................................................................................................................................................... 35

6.6 - Controlling the supply gas pressure and any adjustment ...................................................................................... 35

6.7 - Controlling the combustion agent air pressure ....................................................................................................... 36

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INDEX

6.8 - Controlling the level of CO2 and any adjustment ................................................................................................... 37

6.9 - Adjustment of the power in central heating mode (Range Rated) .......................................................................... 38

7 - USE ...............................................................................................................................................................39

7.1 - Controlling cock opening ........................................................................................................................................ 39

7.2 - Checking central heating plant pressure ................................................................................................................ 39

7.3 - Generalities ............................................................................................................................................................ 40

7.4 - Ignition procedure .................................................................................................................................................. 40

7.5 - “User menu” ........................................................................................................................................................... 40

7.6 - Summer operating mode ........................................................................................................................................ 40

7.7 - Winter operating mode ........................................................................................................................................... 40

7.8 - Adjusting the domestic hot water (if a Indirect Water Heater is present) ................................................................ 40

7.9 - Central Heating ...................................................................................................................................................... 40

7.10 - Thermostatic adjustment ...................................................................................................................................... 41

7.11 - Climatic adjustment .............................................................................................................................................. 41

7.11.1 - Climatic adjustment: on which plants? .................................................................................................... 41

7.11.2 - Climatic adjustment: precautions during adjustment ............................................................................... 41

7.11.3 - Climatic adjustment: setting the parameters ........................................................................................... 41

7.11.4 - Climatic adjustment: adaptation to different climatic areas ..................................................................... 43

7.11.5 - Climatic adjustment: switching the central heating service on and off .................................................... 43

7.11.6 - Climatic adjustment with room compensation ......................................................................................... 43

7.12 - Timers of the various functions ............................................................................................................................ 43

7.13 - Pump anti-block ................................................................................................................................................... 43

7.14 - Anti-freeze protection ........................................................................................................................................... 43

7.15 - Automatic plant loading (not recommended) ........................................................................................................ 43

7.16 - Energy Saving ...................................................................................................................................................... 43

7.17 - “User menu” ......................................................................................................................................................... 44

7.18 - “Installer menu” .................................................................................................................................................... 45

7.19 - Diagnostics ........................................................................................................................................................... 47

7.19.1 - Diagnostics: blocks “Loc” ........................................................................................................................ 48

7.19.2 - Diagnostics: errors “E” ............................................................................................................................ 50

7.19.3 - Diagnostics: alarms“AttE” ....................................................................................................................... 51

8 - MAINTENANCE ............................................................................................................................................52

8.1 - General recommendations ..................................................................................................................................... 52

8.2 - Removing the casing and access to internal components ..................................................................................... 53

8.3 - Removing the burner fan unit ................................................................................................................................. 54

8.4 - Cleaning the burner and the fumes side primary heat exchanger ......................................................................... 54

8.5 - Correct positioning of the ignition and ionising electrodes ..................................................................................... 55

8.6 - Removing the ow meter ....................................................................................................................................... 55

8.7 - Removing the safety valve ..................................................................................................................................... 55

8.8 - Cleaning the condensate conveyor siphon ............................................................................................................ 56

8.9 - Removing the air vent valve ................................................................................................................................... 57

8.10 - Replacing the pump motor ................................................................................................................................... 57

8.11 - Removing the central heating circuit pressure sensor ......................................................................................... 57

8.12 - Emptying the appliance ........................................................................................................................................ 58

8.13 - Fan ....................................................................................................................................................................... 58

8.14 - Minimum and maximum power ............................................................................................................................ 58

8.15 - Checking the ionisation current ............................................................................................................................ 59

8.16 - Checking combustion performance ...................................................................................................................... 59

8.17 - Water temperature measurement sensors ........................................................................................................... 59

8.18 - External temperature sensor ................................................................................................................................ 59

8.19 - Operational wiring diagram .................................................................................................................................. 60

8.20 - Multi-wire wiring diagram ..................................................................................................................................... 62

9 - TECHNICAL DATA ........................................................................................................................................64

10 - COMMAND MENU DIAGRAM ....................................................................................................................66

11 - MENU FORCED BY INTERNAL ELECTRIC BRIDGE ................................................................................67

12 - CE DECLARATION OF CONFORMITY ......................................................................................................68

13 - HYDRAULIC TEST CERTIFICATE .............................................................................................................69

14 - WARRANTY ................................................................................................................................................70

14.1 - General warranty conditions ................................................................................................................................ 70

14.2 - Instructions for lling-in the warranty card ............................................................................................................ 70

14.3 - Limits of the warranty ........................................................................................................................................... 70

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If you smell gas

1. - Close the gas cock.

2. - Ventilate the room.

3. - Do not switch on any electric device, telephone included.

4. - From another room, call a professionally qualified technician immediately or the gas supply company. Call the Fire Service if the former are not available.

If you can smell combustion products

1. - Switch the appliance off.

2. - Ventilate the room.

3. - Call a professionally qualied technician.

Explosive or highly ammable products

Do not store or use explosive or highly ammable materials

such as paper, solvents, paints, etc...in the same room where the appliance is installed.

Installation, modications

The gas appliance must be installed, calibrated or modied

by professionally qualied staff, in compliance with National

and local Standards, as well as the instruction in this manual.

Incorrect installation or poor maintenance can cause

injury/damage to persons, animals or objects, for which the manufacturer cannot be deemed liable.

The appliance exhaust must be connected to a burned

gas evacuation pipe. Failure to comply with this regulation leads to serious risks for the safety of persons and animals.

A domestic hot water temperature level exceeding 51°C

can cause permanent injury/damage to persons, animals and objects. Children, the elderly and disabled must be protected against the potential risks of scalding, by introducing devices that limit the temperature of use of domestic hot water to utilities.

The parts conducting the fumes must not be modied. Do not obstruct the ends of the intake/exhaust pipes. Do not leave parts of the packaging and any replaced parts

within the reach of children.

Seal the adjustment devices after every calibration. In agreement with the provisions for use, the user must

keep the installation in good working order and guarantee reliable and safe operation of the appliance.

 The user must have maintenance performed on the

appliance by a professionally qualified technician in agreement with national and local Standards and in compliance with that stated in this manual.

We also highlight the convenience of an annual scheduled

maintenance contract with a professionally qualified technician.

Before performing any cleaning or maintenance operation,

disconnect the appliance from the mains electricity and gas supplies and by acting on the cut-off devices.

After having performed any cleaning or maintenance

operation, make sure that all internal parts of the appliance are dry before re-connecting the electric power supply.

This appliance is not intended for use by persons (including

children) with reduced physical and sensory conditions or

lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.

This manual is an integral and essential part of the product

and must be kept carefully by the user, for possible future consultation. If the appliance must be transferred or if you should move and leave the unit to another user, always ensure that this manual remains with the new user and/ or installer.

Any optional or kits added successfully must be original

Cosmogas products.

This appliance must be intended only for the use for which

it has been expressly declared: heating water for closed circuits intended for the central heating of rooms for civil and domestic use, production of domestic hot water for civil use.

 Any contractual and extra contractual liability of the

manufacturer is excluded for damage caused by installation errors or errors in use and however due to failure to comply with the instructions given by the manufacturer or by failure to comply with applicable national and/or local laws.

For safety reasons and respect for the environment, the

packaging elements must be disposed of in the relevant separate waste collection centres.

In case of breakdown

In the case of appliance breakdown and/or malfunctioning,

deactivate it; do not attempt any repairs.

Cont act a professi onally qualifie d t echnician only. If components must be replaced for repair, only use original spare parts. Failure to comply with the above can jeopardise the safety of the appliance.

Professionally qualied technician.

Professionally qualied technician means, a person with specic technical skill in the sector regarding central heating

plants and the production of hot water for sanitary and domestic uses, for civil use, electric plants for the use of combustible gas. This staff must be authorised as envisioned by the law.

Technical drawings

All the drawings in this manual relating to electrical, hydraulic or gas installation plants, must be deemed purely indicative. All of the safety elements, auxiliary elements such as the diameters of the electric, hydraulic and gas pipes, must always

be checked by a professionally qualied technician to verify

compliance with applicable Standards and Laws.

1.1 - National installation laws and regulations

- Fire prevention rules issued by the Fire Service.

- D.M. dated 01/12/75

- D.M. dated 22/01/2008 n°37 (former Law n°46 dated 05/03/90)

- Law n°10 dated 09/01/91

- D.P.R. dated 26/08/93 n°412

- D.M. dated 12/04/96

- D.P.R. dated 21/12/99 n°551

- DLgs. dated 19/08/05 n° 192

- DLgs. dated 29/12/06 n° 311

- IEC 64-8 Standard

- INAIL (national insurance institute for accidents at work) certied “R” Collection (Former ISPESL “Higher Institute for Worker Security and Protection”)

1 - GENERAL SAFETY RECOMMENDATIONS

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2.1 - Presentation

Congratulations! You have purchased one of the best products on the market. Each individual part is proudly designed, realised, tested and assembled within the COSMOGAS establishment, thus guaranteeing the best quality control. This product has been developed thanks to the constant research by COSMOGAS, considered the “top”

regarding respect for the environment, as it lies within class 5 (the least polluting) envisioned by the EN 297 (and EN 483) Technical Standard and has high efciency; 4-star as per European Community Directive 92/42/

EEC. Great importance has also been given to the end of the appliance’s life. All of its components can be easily separated into homogeneous elements and completely re-cycled.

2.2 - Overview of the models

MYDENS XXY

“60C” = Boiler with maximum heat input of 57.8 kW with integrated pump; “60A” = Boiler with maximum heat input of 57.8 kW without integrated pump;

Indoor wall-mounted ecological condensing gas boiler with pre-mixed burner.

2.3 - Manufacturer

COSMOGAS srl Via L. da Vinci 16

47014 - Meldola (FC) Italia

Tel. 0543 498383 Fax. 0543 498393 www.cosmogas.com info@cosmogas.com

2.4 - Key for the symbols used

ATTENTION !!!

El ectric s hock haza rd. Failure to c omply wit h t hese recommendations can jeopardise the good working order of the appliance or cause serious damage to persons, animals or objects.

ATTENTION !!!

General hazard. Failure to comply with these recommendations can jeopardise the good working order of the appliance or cause serious damage to persons, animals or objects.

 Important indication symbol

2.5 - Maintenance

It is recommended to perform regular yearly maintenance of the appliance for the following reasons:

- to maintain a high yield and manage the domestic hot water

plant economically (with low fuel consumption);

- to achieve a high level of safety;

- to maintain the level of environmental compatibility of the

combustion high;

Offer your customer a scheduled maintenance contract.

2.6 - Warranty

see chapter 14.

2 - GENERAL INFORMATION

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1 - Command and control board 2 - Electric connections board 3 - Electric control board box

4 - Water ow rate measuring device 5 - Flow tting

6 - Pump release screw

7 - Circulation pump (model “C” only)

8 - Detection electrode 9 - Primary heat exchanger

10 - Return tting

11 - Air vent valve 12 - Air intake and burned gas exhaust

13 - Support attachments 14 - Spark generator 15 - Ignition cables 16 - Fumes non-return valve 17 - Air inlet manifold 18 - Air/gas manifold 19 - Gas valve 20 - Access to the gas valve adjusters 21 - Front casing 22 - Display 23 - Control board

3 - MAIN COMPONENTS

Figure 3.1 - Boiler internal components

020005.01.002

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24 - Double fumes temperature sensor (Par. 10 0 6

and1014)

25 - Front casing couplings 26 - Double ow temperature sensor (Par. 1001 and

1005)

27 - Central heating circuit pressure sensor 28 - Return temperature sensor (Par. 1007)

29 - Condensate collection tank 30 - Safety valve 31 - Fan 32 - Air/gas mixing unit 33 - Condensate drain siphon 34 - Burner 35 - Burner window 36 - Left ignition electrode 37 - Right ignition electrode

3 - MAIN COMPONENTS

Figure 3.1 - Boiler internal components

02.0005.01.003

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MYDENS 60

COSMOGAS

Key gure 4.1:

1 = Boiler 2 = Combustion agent air inlet 3 = Fumes outlet

4 = Fumes temperature sensor (Par. 1006) 5 = Sealed chamber

6 = Fumes temperature safety sensor (Par. 1014) 7 = Water collection pipe coming from the combustion agent inlet pipe

8 = Flow temperature sensor (Par. 1001) 9 = Flow temperature safety sensor (Par. 1005)

10 = Burner 11 = Stainless steel VRC type heat exchanger 12 = Fan

13 = Return temperature sensor (Par. 1007) 14 = Condensate collection siphon with sediment decanter 15 = Air/gas mixer 16 = Pneumatic gas valve 17 = Central heating circuit pressure sensor 18 = Circulation pump *

19 = Central heating circuit ow

20 = Gas inlet 21 = Central heating circuit return 22 = Condensate drain collector and of the safety valve 23 = Central heating plant 24 = Air vent valve 25 = Safety valve

26 = Water ow rate measuring device

* Present only in model C

4 - OPERATION

Figure 4.1 - Hydraulic layout

MYDENS 60A MYDENS 60C

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MYDENS 60

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4.1 - Operation and intended

use of the appliance

This product is a condensing gas appliance, intended for the production of central heating. It can also be interlocked to the production of domestic hot water for civil use, but

must be connected to a Indirect Water Heater (see g. 4.7.).

Make the adaptation between boiler and plant, selecting the characteristic residual head curve deemed most suitable

from those available (see g. 4.2).

4.1.1 - Modulating pump

The MYDENS 60A boiler is built especially without the internal pump, so that the installer can connect any pump, even the modulating type. The only precaution to take is that of introducing a by-pass

valve (see gure 4.5, detail “35”). This must be such, that the

boiler is guaranteed a minimum water circulation of 600 l/h in

any operating situation. The characteristic curve of the eld

of modulation of the modulating pump we supply on request,

is given in gure 4.3.

4.1.2 - Hydraulic separating device

If the plant must be served by a water ow rate higher than the

pump can supply, a hydraulic separator must be positioned

between the boiler and the plant (see gures 4.6 and 4.7, detail “20”).

4.1.3 - Production of domestic hot water

A Indirect Water Heater must be connected for the production

of domestic hot water, according to the layout in gure 4.7.

The temperature of the domestic hot water is adjusted following the relevant procedure in chapter 7.8.

4.1.4 - Plant types

The following types of plants can be realised depending on the model: This boiler can only be used to realise a central heating plant

(see gures 4.5 and 4.6) or a plant for central heating and the production of domestic hot water (see gure 4.7). In both

cases, the central heating plant can be high or low temperature

(see chapter 5.9 for adjustment of the boiler).

4.2 - Precautions during installation

Respect the following indications for good working order of the appliance:

It must be attached to a central heating plant and eventually

to a domestic hot water distribution network, compatible with the features, performance and powers of the appliance itself.

Check gure 5.1 concerning the minimum safety distances

for installation and future maintenance.

4 - OPERATION

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4.3 - Characteristic curve of the residual

head at the central heating plant

The residual head at the attachments of the MYDENS

boiler with standard pump is given as a graph in gure 4.2.

A modulating pump can be provided on request.

In this case, the eld of modulation (detail “x”) can be veried on the graphics in gure 4.3.

4 - OPERATION

Figure 4.2 - Residual head for MYDENS 60C with 8 metre pump (standard)

KEY for gures 4.2 and 4.3

I - II - III = Pump speed (see gure 4.2) X = Range of modulation (see gure 4.3)

Figure 4.3 - Residual head for MYDENS 60C with modulating pump (on request)

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MYDENS 60

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Figure 4.4 - Flow resistance of the MYDENS “A” boiler

4 - OPERATION

4.4 - Head losses characteristic curve

The MYDENS 60A boiler does not have a circulation pump. To dimension this pump, the designer must consider

the ow resistances of the plant to be created and the ow resistances of the boiler itself. To do this, the ow

resistances of the boiler are given in a graphical form in

gure 4.4.

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4 - OPERATION

Figure 4.5 - Example of basic connection layout

KEY for gures 7 and 8

1 MYDENS 60 boiler range

2 INAIL certied Safety valve

3 INAIL certied manometer

4 INAIL certied thermometer

5 INAIL certied safety maximum pressure switch

6 INAIL certied safety thermostat

7 Gas cock

8 INAIL certied Gas Cut-off Valve

9 INAIL certied sample point

10 Gas inlet

11 Expansion tank

12 Microbubble separator

Figure 4.6 - Example of connection layout with

hydraulic separator device

13 External sensor (on request)

14 Filter

15 Electric power supply

16 Low or high temperature heat plant

17 Plant water supply

18 Domestic cold water

19 Central heating circuit pump

20 Water disconnector

21 Air vent valve

23 Condensate neutraliser

24 INAIL certied safety minimum pressure switch

35 By-pass valve

36 Circulation pump (to be envisioned for MYDENS 60A)

37 Room thermostat or equivalent system

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4 - OPERATION

1 MYDENS 60 boiler

2 INAIL certied Safety valve

3 INAIL certied manometer

4 INAIL certied thermometer

5 INAIL certied safety maximum

pressure switch

6 INAIL certied safety thermostat

7 Gas cock

8 INAIL certied Gas Cut-off Valve

9 INAIL certied sample point

10 Gas inlet

11 Expansion tank

12 Microbubble separator

13 External sensor (on request)

14 Filter

15 Electric power supply

16 Condensate neutraliser

17 Air vent valve

18 Domestic cold water

19 Central heating circuit pump

20 Water disconnector

21 Cut-off valve

22 Non-return valve

23 Central heating plant ow

24 Central heating plant return

25 Cap for sludge drain

26 Central heating plant mixing valve

27 Plant drain

28 Indirect Water Heater load pump

29 Plant load unit

30 Indirect Water Heater safety valve

31 Indirect Water Heater temperature sensor

32 Domestic hot water circuit expansion tank

33 Domestic hot water outlet

34 INAIL certied safety minimum pressure switch

36 Circulation pump (to be envisioned for MYDENS 60A)

37 Room thermostat or equivalent system

Figure 4.7 - Example of

connection layout with

hydraulic separator

device and Indirect

Water Heater

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MYDENS 60

COSMOGAS

5.1 - Opening the packaging

The appliance is supplied in cardboard packaging. Open

following the instructions given on the aps of the packaging

itself.

5.2 - Dimensions and minimum safety distances

It is necessary to leave free spaces around the boiler as

illustrated in gure 5.1 both for installation and maintenance.

5.3 - Choosing the place of installation

ATTENTION !!! The appliance must be installed

exclusively on a solid, vertical wall, which can support the weight.

 Before installation, the central heating plant and, if

necessary, the domestic hot water plant must be washed thoroughly in order to remove any residues or impurities, which could compromise the good working order of the boiler itself.

This appliance is not envisioned for installation outdoors.

It must not be exposed to temperatures below zero and temperatures above 50°C. Selected a place sheltered from atmospheric agents and freezing.

This appliance must be installed in a location where any

loss of water from the same, the connections between the pipes or from the safety valve drain, cannot cause

damage to materials or objects below. The appliance must be installed within the home, or otherwise protected from atmospheric agents such as rain, wind, sun, and especially freezing.

Dene the room and suitable position for installation, taking

into account the following factors:

- connection of the fumes exhaust/air intake pipes;

- connection of the gas supply pipe;

- connection to the water supply;

- attachment of the central heating plant;

- attachment of the domestic hot water plant (if present);

- electric connection;

- connection to the drain for the condensate produced by

the boiler;

- electric connection of the room thermostat;

- eventual connection of the safety valve drain;

- eventual attachment of the external temperature sensor;

1 - 1” 1/2 central heating ow

2 - 1” gas inlet 3 - 1” 1/2 central heating return 4 - Fumes exhaust/Air intake 5 - Support attachments

5 - INSTALLATION

Figure 5.1 - Minimum safety distances

Figure 5.2 - Boiler dimensions and attachments centre to centre distances

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5 - INSTALLATION

5.4 - Mounting the appliance

Refer to gure 5.3:

1.- mark the holes for the plugs and hydraulic ttings on

the wall, checking that the template is square to the

environment;

2.- make the holes “A” and introduce the wall plugs “B”;

3.- make the boiler hydraulic and gas connections;

4.- hang the boiler on the plugs “C”;

5.- make the hydraulic ttings.

5.5 - Flow and Return

ATTENTION !!! COSMOGAS is not liable for any damage caused by incorrect use of additives in the central heating plant.

ATTENTION !!! The plant downstream from the appliance must be made with materials that resist temperatures up to 97°C and pressure of 3 bar.

Differently (e.g. plastic piping) the plant must be tted

with the relevant protection and safety devices.

Before connecting the central heating pipes, wash the plant thoroughly to eliminate any waste (hemp, radiators casting

sand, etc..), which could damage the appliance. This

washing operation must also be performed if the appliance is replaced.

Figure 5.2 shows the positioning of the ow and return ttings.

Install a metal mesh lter on the return pipe in order to stop

any plant residues before the return into the boiler.

Do not use the appliance for the introduction of any type

of additive into the plant.

Figure 5.3 - Support plugs

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5 - INSTALLATION

the winter the leaks on radiator valves are often not visible because they are dried by the heat produced by the radiator

or boiler). These micro leaks however allow air to enter the

plant. The main points that can give rise to micro leaks are in the joints and, in particular, from the intake side of the pump

(air vent valves, o-ring seals, loading valves). In these cases,

the plant must be protected with a suitable corrosion inhibitor in order to prevent damage.

5.6.2 - For correct plant operation it is necessary to ascertain that:

1) there are no leaks in the plant or the most evident ones have been eliminated;

2) if an automatic lling system is present, a litre meter must be installed on order to know the precise size of any leaks;

3) the plant must be lled and topped up with softened water

in order to reduce the total hardness. The water must also be conditioned in order to maintain the pH within the threshold

envisioned in order to prevent corrosion phenomena;

4) both in new plants and replacements, there must be efcient systems that eliminate air and impurities: lters, separators of micro impurities and separators of micro air bubbles;

5) do not drain plant water during routine maintenance, even if it appears to be an apparently insignicant amount: for example to clean lters, supply the plant with the relative cut-off valves upstream and downstream from the lter itself;

6) always analyse the plant water before opening the

communication between the new generator and plant, to establish whether the chemical and physical features of the water indicate the necessity to empty the plant completely, the use of the water already present in the plant or the chemical washing of the plant, using mains water with the addition of a detergent, when it is suspected that the plant may be dirty or particularly clogged and the successive new loading of treated water. If the analysis of a sample of water that will be used to load the plant shows the following factors:

- 9.6 < pH < 10.5 (if the plant is in contact with aluminium, the

pH must be lower than 8.5)

- Ca++ + Mg++ : <0.5°f

- OH + 1/2 C03 : from 5 to 15°f

- P205: from 10 to 30 mg/l

- Na 2S03: from 20 to 50 mg/l loading can be continued. A inhibitor must be used if the features are different.

5.6 - Water supply

Have the water network connection pressure checked. If necessary, have a suitable pressure reducer installed.

ATTENTION !!! The central heating plant (and

therefore the heat module) must be connected to the water mains with the interposition of a device that

prevents backow of drinking water towards the plant,

as requested by the current Anti-pollution Safety Standards.

5.6.1 - Recommendations of the features of the water inside the plant

Filling the central heating plant is an extremely delicate operation, not to be underestimated, regarding replacement of the heat generator or new installations. In certain cases, the incorrect assessment of the plant water features can lead to damage of the plant and heat module. A plant is almost never

sealed perfectly; sometimes water leaks as well as the entry of

oxygen can occur. Both of these phenomena are dangerous. The main parameters that can negatively affect the lifespan of the plant are:

- The simultaneous presence of different metals (copper,

brass, steel and aluminium) which, in aqueous environments,

give rise to galvanic corrosion.

- The presence of free oxygen, due to the inltrations of air that occur in proximity of ttings and gaskets, constitutes a

typical corrosive agent, particularly active at temperatures between 50 and 70° C.

- The loss of water, which leads to frequent top-ups, can act in a corrosive manner and as a deposit, depending on the type of water available to top-up the same.

In all cases, the size of the leaks (and relative top-ups) must be kept under control, especially when an automatic lling

system is installed. In this case, the installation of a meter is highly recommended, which indicates the amount of water reintegrated. Natural impurities or added in the water. Many drinking waters can contain high concentrations of chlorides and sulphates, which can increase the speed of corrosion on metal surfaces. Other undesired components could have been introduced into the plant before or during installation (construction materials,

metal shavings, sawdust, grease, deposits and dirt in general).

Welding residues can also cause corrosion, both in the case of

new plants and in the case of modications or repairs. In the

old plants designed to operate with radiators, characterised by a very large piping diameter, the water content in the plant is noteworthy and promotes the formation of sludge and deposits. Sludge and Deposits The presence of black deposits

(magnetite) indicate that corrosion is limited; however, the high specic weight of this oxide can cause difcult to remove

clogging, especially in the hottest areas. The deposits are due to the hardness of the water, i.e. the presence of calcium and magnesium salts. The calcium goes to the hottest areas of the plant in the form of carbonate. The magnetite often contributes to strengthening the deposit. The iron oxide (the

water is a reddish colour) is a sign of corrosion by oxygen.

Frequent leaks In the event of frequent leaks, hydrogen and/ or air accumulate on the top part of the heat exchanger and the radiators, preventing complete heat exchange. When the electrolytic corrosion process starts, the level of the water in the plant drops and gases accumulate on the top part of the heat exchanger and on the radiators. The presence of air is caused by the fact that the plant may not be perfectly sealed. A slow drop in plant pressure due to a leak is often

difcult to nd, especially when the aw is very small (in

Page 17

MYDENS 60

COSMOGAS

5 - INSTALLATION

5.6.3 Treatment of the water in the thermal plants for civil use

The water in the heating plants for civil use must always be treated on replacement of the generator and in the event of a new plant. On the basis of the features of the raw water, in the design phase all treatment plants and the chemical conditioners necessary to obtain water with the following features, must be envisioned:

- Aspect: possibly clear;

- pH: over 7 (with radiators with aluminium elements of light

alloys, the pH must be lower than 8.5);

- Conditioners: present within the concentrations prescribed by the supplier. If the features of the of the water are not known, the probability of the following typical drawbacks occurring is high:

1. LIME SCALE FOULING

1 °fr = 10mg/kg CaCO

30° fr = 300 mg/kg CaCO

In a plant that contains 1000 litres of water at 30°f, the content of CaC03 is equal to 300 gr, which if not treated suitably, will deposit on the surface of the heat exchanger as this is the hottest point of the plant. This creates concentrated temperature increases with consequent breakage of the heat exchanger.

2. CORROSION

Corrosion is normally promoted by the presence of oxygen, by the contact between different metals or the presence of chlorides.

3. DEPOSITS

They are insoluble organic and inorganic substances: SLUDGE, WORKING RESIDUES.

5.7 - Draining the heating circuit

To avoid continuous renewal of water and consequent input of oxygen and limestone, it is recommended to limit every heating circuit drainage as much as possible.

5.8 - Expansion Tank

ATTENTION !!! Provide the plant with an appropriately dimensioned expansion tank, as envisioned by the national and local Installation Standards.

5.9 - Low temperature

plants (or on the oor)

ATTENTION !!! The plant downstream from

the appliance must be made with materials that resist temperatures up to 97°C and pressure of 3 bar.

Differently (e.g. plastic piping) the plant must be tted

with the relevant protection and safety devices.

ATTENTION !!! when installing the boiler in

a low temperature plant, it is indispensable to set parameter 3015 at the value of 45°C and parameter

3016 at the value of 20°C (see chapter 11).

With this setting, the boiler will adjust the ow to a

temperature between 20°C and 45°C. No adjustment from

the command panel (also via climatic adjustment),can

supply water at a temperature over 45°C.

ATTENTION !!! If the boiler is installed in a oor

plant made with plastic piping, all of the precautions must be taken against corrosion due to oxygen in the water:

make sure that the plant is made with plastic pipes with permeability to oxygen not exceeding 0.1 g/m3 at 40°C. Whenever the pipe should not meet these features, the radiant panel circuit from the boiler must be isolated via a plate heat exchanger, suitable to resist the corrosion generated by the oxygen dissolved in the water.

5.10 - Gas

ATTENTION !!! It is prohibited to power the

appliance with gases different to that envisioned.

ATTENTION !!! Check that the gas and supply

pressure are those for which the boiler has been adjusted.

Two situations are possible: A - the gas and supply pressure correspond to the

adjustment of the boiler. In this case, it can be

connected;

B - the gas and supply pressure do not correspond to the

adjustment of the boiler. In this case, the boiler must be converted to the type of gas and supply pressure corresponding to the supply available.

The boiler is provided with the relevant gas conversion kit.

Before installation it is advised to clean the inside of the

gas supply pipe thoroughly;

A cut-off cock must always be installed on the gas

supply pipe;

To prevent damage to the appliance gas control unit,

perform the leak test at a pressure not exceeding 50

mbar;

If the gas plant must be inspected at pressures over

50 mbar, operate on the cock positioned immediately upstream from the boiler, to isolate the same from the plant.

Figure 5.2 veries the positioning of the appliance gas tting.

The sections of the pipes making up the gas supply plant

must always guarantee a gas supply sufcient to cover the

maximum requested.

Page 18

MYDENS 60

COSMOGAS

Figure 5.4 - Safety valve drain and condensate drain connection

5 - INSTALLATION

5.11 - Condensate drain

There is a siphon inside the boiler for the evacuation of

condensate (see gure 3.1 detail “33”) and to prevent

combustion products from escaping, whose end

corresponds to the pipe “B” in gure 5.4. This termination must be conveyed into an anti-odour siphon (gure

5.6 detail “G”) to prevent bad odours returning into the

environment (the anti-odour siphon “G” is supplied on

request).

The tank “A” is provided already mounted as indicated in

gure 5.4 and xed with the screw “D”. The drain pipe “F” is also installed as indicated in gure 5.4.

In particular, the condensate drain plant must be:

for room used for residential purposes and for ofce with

more than 10 users, it can be connected to the domestic waste disposal plant by means of appropriate siphon with disjunction capable of preventing the pressurisation of

the system (siphon prepared within boiler) and to prevent

the return of bad odours from the sewer (detail “G” in

gure 5.6). If the room used for ofce purposes has

less than 10 users, before connection with the domestic waste drain, a condensate neutraliser is good practice (see chapter 9 for the value of acidity of the condensate

and the quantities).

be performed with a pipe with internal diameter equal to

or greater than 13 mm;

be installed in a way to prevent the liquid from freezing;

therefore pay attention to any external passings. It is

prohibited to drain into gutters or drainpipes;

to slope continuously towards the drain point, avoid high

points, which could pressurise the pipe;

5.12 - Safety valve

The appliance is protected against overpressures by a

safety valve calibrated to 3 bar (see gure 3.1 detail “30”). The safety valve drain (detail “C” in gure 5.4), along with the condensate drain (detail “B” in gure 5.4) must be conveyed to a pipe “F” (see gure 5.4) with minimum

internal diameter of 13 mm. The pipe “F” must be then

taken to the anti-odour siphon (detail “G” gure 5.6). This

drain with siphon is used to prevent overpressures if the valve is opened and makes it possible for the user to check the eventual intervention.

The pipe “F” in gure 5.6 is supplied mounted as per standard along with tank “A” in gure 5.4. The anti-odour siphon “G” in gure 5.6 is provided on request.

ATTENTION !!! If not connected to the drain,

whenever the safety valve should intervene, it could cause damage to persons, animals or objects.

5.13 - Water, gas connections

The boiler is provided with the ttings illustrated in gure 5.5

as per standard, where:

A = central heating ow Ø 35 B = central heating return Ø 35 C = 1” 1/2 ow tting D = 1” 1/2 return tting

E = 1”1/2 Gasket

Figure 5.5 - Hydraulic connections

020005.01.005

Figure 5.6 - Siphon funnel (on request)

020002.01.028

min10 mm max 30 mm

020005.01.004

Page 19

MYDENS 60

COSMOGAS

5.14 - Electric connections: generalities

ATTENTION !!! The appliance is only electrically

safe when it has been correctly connected to an

efcient earth circuit, performed as envisioned by the

current Safety Standards.

This fundamental safety requirement must be met. If in doubt, request a thorough control of the electric plant by a

professionally qualied technician.

Have a professionally qualied technician check that the

electric plant is suitable for the electric power required by the appliance, indicated on the plate.

The appliance must be connected to the mains electricity

using a cable coupler. The use of adapters, multiple sockets, extensions, etc. is not allowed.

The appliance must be connected to the mains electricity

using a three-polar electric cable, with double isolation, minimum section of 1.5 mm² and resistant to a minimum

temperature of 70°C characteristic T).

For connection to mains electricity, a bi-polar switch

must be envisioned in the vicinity of the appliance with a contacts opening distance of at least 3 mm, as envisioned by the current regulations on the subject.

Respect the polarity between the neutral phase during

connection of the appliance.

Make sure that the water plant and heating pipes are not

used as earth points for the electric or telephone plant. This piping is not suitable for this purpose, moreover, serious corrosion damage would occur in a very short time, on the appliance, piping and radiators.

ATTENTION !!! the boiler is not protected

against the effects caused by lightening.

020002.01.009

5 - INSTALLATION

Figure 5.7 - Electric connections

Key for gure 5.7

A = commands board box; B = electric connections lid; C = connections lid closing aps;

D = electric connections

Key for electric contacts

PM = External modulating pump control (if present)

CH = Flow sensor BUS = Remote control TA = Room thermostat/chronothermostat 0-10 = 0-10 volt signal input

SE = External sensor (if present) SB = Indirect Water Heater sensor (if present)

MF = Multi-function output

PE = External pump (if present) DNC = External diverter valve (if present) (D = Domestic hot water line; N = Neutral; C = Heating line)

L1 = boiler power supply line N = Boiler power supply neutral EARTH SYMBOL = Earth contacts

020002.01.010

Page 20

MYDENS 60

COSMOGAS

Figure 5.8 - Correct positioning of the room thermostat/chronothermostat

5.14.1 - Power supply cable connection

Proceed as follows to connect the power supply cable (refer

to gure 5.7):

1.- use a three-polar cable with double isolation, with

minimum section of 1.5 mm²;

2.- remove the casing from the appliance following the

relevant instructions in chapter 8.2;

3.- rotate the panel “A” towards the front of the boiler;

4.- operate on the aps “C” and open the lid “B” as indicated by the arrow;

5.- lay the power supply cable through the fairlead in

proximity of the contacts “L1”, “N” and earth symbol;

6.- strip the cable making sure that the earth wire (yellow/

green) is kept 20 mm longer than the other two;

7.- connect the yellow-green cable to the earth clamp (see

symbol);

8.- connect the brown cable (Phase) to the clamp L1;

9.- connect the blue cable (Neutral) to the clamp N.

5.14.2 - Choice of the room thermostat/ chronothermostat

The boiler is set-up to operate with any room thermostat or chronothermostat, which has the contact to which the cables coming from the boiler are to be connected, with the following features:

- open/closed (ON/OFF);

- potential-free (not powered);

- closing when there is a request for heat;

- 24Vac, 1A electrical feature

5.14.3 - Connecting the room thermostat/ chronothermostat

Install the room thermostat in a place in the house where the temperature is the most characteristic of the home and however in an area that is not subjected to repeated temperature changes, away from windows or doors which

open directly to the outside (see gure 5.8).

Proceed as follows to connect the room thermostat cable

(refer to gure 5.7):

1.- use a bi-polar cable with minimum section of 1.5mm², which goes from the boiler to the room thermostat/ chronothermostat. The maximum length allowed is 20 metres. For lengths exceeding 100 metres, use a shielded

cable with shield earthing;

2.- remove the casing from the appliance following the

relevant instructions in chapter 8.2;

3.- lay the electric cable through the fairlead in proximity of

the “TA” contacts;

4.- use a free fairlead, not used by other wires;

5.- strip the cable;

6.- connect the two ends of the cable to the “TA” clamps

(see gure 5.7).

ATT ENTI O N !! ! As the room ther most a t/

chronothermostat cables are subjected to very low safety

voltage (25Vdc), they must ow in wires different from the

230 Vac power supplies.

5 - INSTALLATION

Page 21

MYDENS 60

COSMOGAS

5 - INSTALLATION

5.14.4 - Installing the external temperature sensor (on request)

IInstall the external temperature sensor outside the building in a wall facing NORTH or NORTH-EAST, at a height of 2 to

2.5 metres from the ground. In buildings with several oors, it must be installed at about half way up the second oor. Do not

install it above windows, doors or ventilation outlets or directly below balconies or gutters. Do not plaster over the external temperature sensor. Do not install the sensor on walls without eaves, i.e. not protected from rain. Whenever the sensor is installed on a wall that has yet to be plastered, it must be installed with a suitable thickness or be removed before plastering. Proceed as follows to connect the external temperature sensor cable:

1.- lay a bi-polar electric cable with minimum section of

1.5mm², which goes from the boiler to the external temperature sensor. The maximum length allowed is 20 metres. For other lengths up to 100 metres, use a shielded cable with shield earthing.

ATTENTION !!! As the cables are subjected to

very low safety voltage (24Vdc), they must ow in wires

different from the 230 Vac power supplies.

2.- connect the bipolar cable to the “SE” clamps in gure

5.7;

3.- connect the bi-polar cable to the ends of the external temperature sensor.

Set the boiler to learn of the external temperature sensor as

follows (refer to gure 7.1):

1.- press the RESET keys and

simultaneously for 5

seconds until the symbol

appears on the display to

indicate the entry to the “Installer” menu;

2.- press the

and keys to scroll the parameters

in the “Installer” menu until the parameter

2003 is

displayed;

3.- press the RESET key to enable the modication of the parameter (highlighted by the fact that it starts to ash);

4.- press the

and key to modify the value of

the parameter, taking it to the value of 1 or 2 depending on

the type of climatic adjustment desired (see chapter 7.11);

5.- press the RESET key to conrm the modication of the

parameter (highlighted by the fact that the value of the

parameter starts to ash);

6.- press the RESET key for 2 seconds to go back to normal

display;

The enabling of the external sensor is conrmed by the

appearance of the icon

on the display.

Proceed with the steps given in chapter 7.11.3 to set the

correct adjustment values of the ow temperature depending

on the external temperature.

Page 22

MYDENS 60

COSMOGAS

5.15 - Connection of the boiler with

Indirect Water Heater and coil

The MYDENS 60 model boiler can be connected to a Indirect Water Heater with coil.

The hydraulic connection must be made as in gure 4.7.

Proceed as follows for the electric connection (refer to the

gure 5.7):

1.- disconnect the electric power supply from the boiler;

2.- lay a bi-polar electric able with minimum section of 1.5

mm², which goes from the appliance to the Indirect Water Heater temperature sensor and connect it to the boiler at

clamps “8” and “9” (SB);

3.- connect the other end of the cable to the Indirect Water

Heater temperature sensor;

4.- introduce the temperature sensor sensor inside the

Indirect Water Heater sample point (see gure 4.7 detail “31”).

The MYDENS 60 model boiler can be connected to a Indirect Water Heater with coil also after installation. In this case, a diverter valve must be envisioned outside the boiler to load the Indirect Water Heater along with

setting the parameter 3012 at the value of 1.

The temperature of the water stored inside the Indirect Water Heater can be selected by the user in a range between 40 and 70°C.

ATTENTION !!! A hot water temperature level

exceeding 51°C can cause permanent injury/damage to persons, animals and objects. Children, the elderly and disabled must be protected against the potential risks of scalding, by introducing devices that limit the temperature of use of domestic hot water to utilities.

5.15.1 - Anti- legionella

If the boiler is connected to a Indirect Water Heater for the preparation of domestic hot water, a disinfection cycle is envisioned against the legionella bacterium. This cycle envisions taking the Indirect Water Heater to a temperature

of 60°C (temperature at which the legionella bacteria dies)

at least every week. It is for this reason that the water (at

certain times) can reach the utilities at a higher temperature

that than set with the relative command.

ATTENTION !!! A domestic hot water

temperature level exceeding 51°C can cause permanent injury/damage to persons, animals and objects. Children, the elderly and disabled must be protected against the potential risks of scalding, by introducing devices that limit the temperature of use of domestic hot water to utilities.

5 - INSTALLATION

Page 23

MYDENS 60

COSMOGAS

5.16 - Burned gas exhaust and

combustion agent air intake pipe

ATTENTION !!! To connect the burned gas

exhaust and combustion agent air intake, the relevant national and local regulations must be respected.

ATTENTION !!! The fumes of this appliance can

reach 90°C in determined conditions. Therefore, use pipes in plastic that can resist high temperatures.

ATTENTION !!! This appliance is the

“condensing” type. Use AISI 316 stainless steel materials to make the fumes exhaust. The polypropylene materials to prevent corrosions due to the acidity of the condensate.

Regarding this, remember that appliances of this type must have exhaust and intake pipes supplied by the manufacturer of the appliance itself. Other types of pipes, if used, must be type-approved for this intended use. The types of exhaust for which the appliance is approved are given on the technical features table at the end of the manual under the “type” heading and on the features plate

afxed to the boiler, also under the “type” heading. The symbols used to dene type of exhaust is given below:

- B23, separated with intake in room and exhaust through wall or roof.

ATTENTION !!! If the appliance is installed with the

B23 type exhaust, it will take in air for combustion from the surrounding environment. Therefore, all precautions must be taken regarding ventilation of the rooms, which are prescribed by the national and/or local Standards.

- C13, coaxial in vertical wall

- C33, coaxial at the roof

- C43, separated with exhaust in ue, combined with intake

in common channel.

ATTENTION !!! The boilers installed in type C43

must only be connected to conventional ues.

- C53, separated with exhaust on roof and intake on wall or however, in two potentially different pressure points.

- C63, the boiler can be tted to type-approved exhaust and

intake pipes of other brands.

ATTENTION !!! With the C63 type exhaust,

the condensate coming from the chimney cannot be conveyed into the boiler.

- C83, separated with wall intake or another point independent from the intakes of other appliances and

ue exhaust.

Figure 5.9 - Exhaust/intake systems

5 - INSTALLATION

Page 24

MYDENS 60

COSMOGAS

During operation, especially in the winter, due to high yield, white smoke may escape from the appliance exhaust. This is solely a natural phenomenon and must not be worried about in any case, because it is the water vapour present in the fumes which in contact with the outside air, condensates.

5.16.1 - Type of intake/exhaust B23

In the case of B23 type combustion agent air/fumes exhaust systems, it is indispensable that the rooms in which the appliances are installed have at least as much air as that required by combustion and ventilation of the room. It is therefore good practice to remember that the combustion of 1 m³ of gas requires 11 cm³ of air. The natural flow of air must take place directly through permanent openings made in the outside walls of the room to

be ventilated; however away from sources of pollution, such

as: vents of dubious origin, airborne industrial exhaust etc.

The ventilation openings must meet the following requirements:

have sections with net passage of at least 6 cm² for

every kW of heat input installed, with minimum of 100

cm²;

be realised in a way that the opening inlets both inside

and outside the wall cannot be blocked;

be protected, for example with grids, metal meshes, etc..

The net section of the passage must not be reduced by

these elements;

be situated at a height more or less of the oor and such

not to disturb the correct operation of the combustion products exhaust devices. Where this position is not possible, the section of the ventilation openings must be increased by at least 50%.

The ow of air can also be obtained from an adjacent room

as long as:

it has direct ventilation, in compliance with the previous

points;

in the room to be ventilated, only appliances tted to

exhaust pipes are installed;

the adjacent room is not a bedroom; the adjacent room is not a common part of the building; the adjacent room is not an environment with re hazard,

such as a hangars, garages, combustible materials

warehouse, etc.;

the adjacent room does not have a negative pressure with

respect to the room to be ventilated due to reverse draught (which can be caused by the presence in the room of

another appliance operating with any type of fuel, a replace

and any other intake device for which an adequate air intake

has not been envisioned);

the ow of air from the adjacent room to that to be ventilated

can take place freely through permanent openings with total net section not less than that indicated at the start of this chapter.

In rooms where gas appliances are installed, it may become necessary, as well as the input of combustion agent air, also to evacuate the stale air, with resulting release of an additional equal amount of clean air.

If the stale air is evacuated with the aid of a mechanical tool

(electric fan) the following conditions must be respected:

a) if there is a common exhaust pipe in the room, it must be

capped;

b) the ventilation opening of the room in which the gas

appliance is installed must be increased depending on the

maximum air ow rate required at the electric fan.

c) the action of the electric fan must not affect the correct

evacuation of the combustion products. To this end, that

stated above must be veried by draft testing, running the

fan or extractor hood at its maximum power and the gas appliance at the maximum and minimum power.

5 - INSTALLATION

Page 25

MYDENS 60

COSMOGAS

5 - INSTALLATION

5.16.2 - “Split 80/80PP” System

(polypropylene) (Type C43; C53; C83)

The appliance is supplied as per standard without ttings

for the connection of the fumes exhaust/air intake. To connect it to a “80/80PP Split” system, the relevant kit must

be requested and must be installed as in gure 5.10.

Fitting “A” can rotate freely by 360°, guaranteeing optimum installation versatility.

In the fumes exhaust side, it is mandatory to install AISI

316L stainless steel or polypropylene pipes, which are more resistant to the formation of condensate.

Take particular care with the installation of pipes in

the part that passes through the wall to the outside. The normal maintenance operations must always be possible, therefore install the pipes in a sheath so that they can slide out.

The horizontal tracts must always have an inclination of

at least 2% towards the condensate drain device.

The appliance is already set-up to collect the

condensate, which must be tted to a drain pipe (see chapter 5.11).

ATTENTION !!! This condensate drain is

designed to make all liquid produced ow from a single

appliance. If several appliances are installed, each one must envision its own condensate drain.

The fumes exhaust/air intake system can be extended up to a maximum distance as indicated in chapter 9. Every 90° bend has a loss equivalent to 1 metre of linear pipe. Every 45° bend has a loss equivalent to 0.5 m of linear pipe.

ATTENTION !!! The fumes exhaust terminal

must be appropriately protected against the effects of the wind (see also 7.19.1 chapitre error Loc 20).

ATTENTION !!! Mechanically secure the

joints between the various component elements of

the exhaust and intake pipe, through the use of xing systems or equivalent systems. See gure 5.12.

ATTENTION !!! The temperature of the exhaust

pipe can reach 90°C during operations. If it must pass through a wall that is sensitive to these temperatures, insert a protective heat-isolation sheath.

ATTENTION !!! If the air intake and fumes

exhaust terminals are positioned in the same wall, they must remain at a minimum distance of 1 metre.

ATTENTION !!! The exhaust and intake pipes

must be appropriately sustained via rigid brackets positioned no more than 1 metre from each other. The

brackets must be xed to rigid walls that can support

the weight of the pipe itself.

Figure 5.12 - Fixing the exhaust and intake pipes

Figure 5.10 - Installing the “80/80PP Split” system

Figure 5.11 - Clearance

020008.01.011

Page 26

MYDENS 60

COSMOGAS

5.16.3 - “Split 80/80PP” System (Type C43;

C53; C83): accessories available

To make the “80/80PP split” fumes exhaust/air intake system,

we propose some of the most common accessories available;

remember that a wide range can be consulted in the relevant catalogue: (the number after the code is used to recall the piece in the

following drawings)

62617306 - N° 10 PP coaxial roof terminal 62617244 - N° 12 90° bend M/F PP 62617255 - N° 29 converts for pitched roofs from 15 up to 25° 62617236 - N° 11 extension M/F PP 62617249 - N°18 anti-slip bands for extensions PP

62617240 - N° N° 14 exible hose M.F. PP L=20m 62617241 - N°16 spacer for exible hose

62617238 - N° 17 telescopic joint PP

62617242 - N° 15 T-tting PP

62617246 - N° 13 45° bend M/F PP

COD. 62617306

5 - INSTALLATION

Page 27

MYDENS 60

COSMOGAS

5.16.4 - “Split 80/80PP” System (Type C43;

C53; C83): installation examples

In gure 5.13 two examples of installation are given:

- exhaust into chimney with collection of condensate inside

the boiler itself. The horizontal part of the fumes exhaust side must be inclined towards the boiler. The intake must slope towards the outside to prevent rain water entering.

- exhaust to the outside directly with the boiler pipes with

condensate collection inside the boiler itself. The intake must slope towards the outside to prevent rain water entering.

In gure 5.14 it is possible to see a separated type of fumes exhaust, where fumes exhaust was realised with exible hose

in polypropylene for piping of technical cells. The condensate produced in the vertical pipe must all be conveyed into the boiler. The intake must slope towards the outside to prevent rain water entering.

Figure 5.13 - Example of “80/80 PP System” installation

Figure 5.14 - Example of “80/80 PP System” installation

5 - INSTALLATION

Page 28

MYDENS 60

COSMOGAS

5 - INSTALLATION

020008.01.013

5.16.5 - “80/125PP vertical coaxial” System

(polypropylene) (C13; C33)

The appliance is supplied as per standard without ttings

for the connection of the fumes exhaust/air intake. To connect it to a 80/125 vertical coaxial system, the relevant

kit must be requested and must be installed as in gure

5.15.

ATTENTION !!! Scrupulously follow the installation

phases of the coaxial pipe as illustrated in gure 5.17. In

particular:

1.- introduce the coaxial pipe “C” inside the bend “A”;

2.- x the external pipe using the stainless steel self-threading

screws “B”.

ATTENTION !!! The coaxial exhaust and

intake pipes must be appropriately sustained via rigid brackets positioned no more than 1 metre from each

other. The brackets must be xed to rigid walls that can

support the weight of the pipe itself.

ATTENTION !!! Once these operations have

been performed, check that the exhaust/intake terminal is exposed to the outdoors with the tolerances given in

gure 5.18

Take particular care with the installation of pipes in the part

that passes through the wall to the outside. The normal maintenance operations must always be possible, therefore install the pipes in a sheath so that they can slide out.

The horizontal tracts must always have an inclination of at

least 2% towards the appliance.

The fumes exhaust/air intake pipe can be extended up to

a maximum distance as indicated in the table in chapter 9 at the end of the manual. Every 90° bend has a loss equivalent to 1 metre of linear pipe. Every 45° bend has a loss equivalent to 0.5 m of pipe.

Figure 5.15 - Installation of vertical coaxial system

Figure 5.16 - Quotes and hole centre to centre distances for coaxial drain pre-installation

Figure 5.17 - Positioning the coaxial pipe

Page 29

MYDENS 60

COSMOGAS

5 - INSTALLATION

5.16.6 - “80/125PP Coaxial” System: accessories available

The following accessories are available on request to make the 80/125 coaxial fumes exhaust/air intake system: (the number after the code is used to recall the piece in the

following drawings)

62617255 - N° 2 converts for pitched roofs from 5° to 25° extension L = 1000 mm 62617321 - N° 1 90° coaxial bend M/F PP 62617322 - N° 6 45° coaxial bend M/F PP 62617323 - N° 7 Coaxial extension L 1m PP 62617325 - N° 3 coaxial PP roof terminal 62617324 - N° 5 coaxial PP wall terminal

62617255

62617321

62617322

62617323

62617324

62617325

Page 30

MYDENS 60

COSMOGAS

5.16.7 - “80/125PP Coaxial” System:

installation examples

When a coaxial exhaust is made (see gure 5.18), both vertical

and horizontal, the exhaust pipe slope upwards in a way to

make the condensate ow into the boiler.

Figure 5.18 - Examples of coaxial pipe installation

5 - INSTALLATION

Page 31

MYDENS 60

COSMOGAS

6.1 - Operating

Before starting the appliance up, it si necessary to carry out the following.

6.1.1 - User instructions

Instruct the user regarding correct use of the appliance and the plant in general. In particular:

Give the installation and use manual and all

documentation contained in the packaging to the user.

Instruct the user concerning the special measures for the

exhaust of burned gases, informing them that they must

not be modied.

Inform the user regarding the control of the pressure

of the water required in the plant and the measures

necessary to ll and bleed the air.

Inform the user regarding the correct adjustment of

the temperatures, control units/room thermostats and radiators for energy saving.

6.1.2 - Filling the condensate drain siphon

The siphon found inside the boiler (see gure 3.1 detail “33”), must be lled with water to create the water head able to prevent the fumes escaping from pipe “F” in gure 5.4. Proceed as follows to do this: (refer to gure 6.1)

1.- loosen and remove the cap “R”;

2.- introduce a rubber hose into the opening “S” and the

other end of the hose into the funnel;

3.- use the funnel to slowly pour about 200 cm3 (a glass) of water;

4.- re-mount everything in reverse order.

6 - OPERATING

Figure 6.1 - Filling the condensate drain siphon

ATTENTION !!! If the boiler remains off for

more than 3 months, the siphon must be lled again as

explained above.

6.1.3 - Filling the central heating plant

If the wording FILL, appears on the visual display when the boiler is powered electrically, it means that the central

heating plant must be lled. Proceed as follows:

only use clean water from the main supply.

ATTENTION !!! The addition of chemical

substances such as anti-freeze must be performed in compliance with the product instructions. In all cases, these substances must not be introduced directly inside the boiler.

1.- open the lling device envisioned by the installer upstream from the appliance and ll the bar to about 1.5

bar (FILL will appear on the visual display);

2.- make sure there are no water leaks from the ttings;

3.- close the lling device envisioned by the installer upstream from the appliance;

4.- bleed the heating elements;

5.- check the pressure on the boiler display again. If it has dropped, load up to 1.5 bar again.

020005.01.006

Page 32

MYDENS 60

COSMOGAS

6.2 - General recommendations

regarding the supply of gas

For commissioning of the boiler, have a professionally

qualied technician perform the following checks:

That the boiler is powered by the type of fuel for which it

is set-up.

That the gas supply pressure (with boiler operating

and at a standstill) is within the maximum and minimum

values indicated in the table in chapter 9 at the end of the manual.

That the supply plant has all safety and control parts

envisioned by the current national and local Standards.

That the fumes discharge terminal and the combustion

agent air intake terminal are free from any obstruction.

That the fumes exhaust and combustion agent air intake

terminal are positioned outside the building.

That the condensate drain connection is connected.

ATTENTION !!! If you smell gas:

A - Do not switch on any electric device, telephone

included or any object that can cause sparks;

B - Immediately open doors and windows causing

a current of air that quickly cleans the gas from the room;

C - From another room, or from a neighbour’s,

immediately call a professionally qualied

technician or the gas supply company. Call the Fire Service if the former are not available.

6.3 - Type of gas for which

the appliance is adjusted

There is a label on the front of the appliance certifying the gas supply type and pressure for which the boiler is adjusted. The boiler may have the following 2 types of wording:

2H-G20-20mbar NATURAL GAS

means that the appliance is adjusted to operate with H type

gas of the second family (natural gas) at a supply pressure

of 20 mbar.

3P-G31-37mbar L.P. GAS

means that the appliance is adjusted to operate with type P

gas (Propane, also called LP Gas) of the third family, at a

supply pressure of 37 mbar.

6 - OPERATING

Page 33

MYDENS 60

COSMOGAS

6.4 - Conversion of the appliance

from one type of gas to another

ATTENTION !!! Read these instructions carefully

before changing the gas:

- The gas appliance must be installed, calibrated or

modied by specialised staff in compliance with legal

terms;

- Check and be certain that the type of gas which is powering the appliance is compatible with the adjustment kit in your possession;

- Do not power the boiler with gases different from those envisioned.

Follow the instructions given below to change the gas: 1 - disconnect the electric power supply upstream from the

appliance;

2 - open the boiler casing as reported in chapter 8.2;

3 - access the control and command board as reported in

chapter 8.2;

4 - move the microswitch “B” of switch “A” from left to right

to the “ON” position (see gure 6.5);

5 - apply electric power to the boiler;

6 - the parameter 3001 will appear on the boiler’s visual

display, followed by its value;

7 - using the keys

and access the

parameter 3002.

8. - press the RESET key to make the 3002 parameter

ash;

9. - using the

and keys, set the value of

the parameter 3002 to the new corresponding value

according to the table in gure 6.7.

10. - press the RESET key to conrm the modication.

11.- remove voltage from the boiler, re-position the microswitch

“B” of switch “A” from right to left in “OFF” position (see gure

6.5).

12. - close the gas supply;

13. - remove the air manifold making sure to turn it

externally and then slide it out of the fan inlet (see gure

6.2, detail “C”);

15. - remove the gas inlet pipe via the two ttings (see gure 6.2, details “H” and “L”);

16. - remove the clamping spring “M” from the seat “N”

releasing the valve “P” (See gure 6.3);

17. - slide the gas valve “P” out upwards;

18. - replace the gas nozzle “R” (see gure 6.4) with an

appropriate one according to that stated in the table in

gure 6.7 under “Diameter of the gas nozzle”;

19. - remount the gas valve (see gure 6.3, detail “P”), making sure to reposition the spring “M”;

20. - remove the gas supply pipe via the two ttings (see gure 6.2, details “H” and “L”);

21. - re-mount the air manifold (see gure 6.2, detail “C”);

22. - open the gas cock;

23. - check for any gas leaks using the relevant means of control.

ATTENTION !!! Perform the leak test using a

soap and water only. The use of naked ames is

prohibited.

020005.01.014

020002.01.041

020002.01.042

Figure 6.4 - Replacing the gas nozzle

Figure 6.3 - Removing the gas valve

Figure 6.2 - Removing the air manifold

6 - OPERATING

Page 34

MYDENS 60

COSMOGAS

ATTENTION !!! If you smell gas:

A - Do not switch on any electric device, telephone

included or any object that can cause sparks;

B - Immediately open doors and windows causing

a current of air that quickly cleans the gas from the room;

C - From another room, or from a neighbour’s,

immediately call a professionally qualied

technician or the gas supply company. Call the Fire Service if the former are not available.

24.- check the supply gas pressure, following the procedure

in chapter 6.6;

25.- open the CO2 adjustment screw completely (see gure

6.14 detail “A”);

26.- control and adjust the CO2, following the procedure in

chapter 6.8;

27.- instead of the label that identified the old state of adjustment, apply the sticker onto the front casing of the

boiler (see gure 6.6), certifying the appliance’s new state

of adjustment, as follows: apply label “B” if the boiler has

been converted from methane to LPG; apply label “A” if the

boiler has been converted from LPG to methane.

A – Microswitch B - Switch

Figure 6.5 - Positioning electric bridge

020002.01.043

OFF

6 - OPERATING

Model

Type

of gas

Setting

parameter

3002

Minimum

gas supply

pressure

(mbar)

Maximum

Gas supply

pressure

(mbar)

Gas nozzle

diameter

(mm)

CO2

Maximum

power

(%)

CO2

Minimum

power

(%)

Maximum

power

(%)

Minimum

power

(%)

NAT

gas

54 15 27 10,0 9,0 ±

0,3 8,5 ± 0,2 4,9 ± 0,2 5,8 ± 0,2

LP gas 55 25 45 6,5 10,5 ± 0,3 10,0 ± 0,2 4,8 ± 0,2 5,6 ± 0,2

Figure 6.6 - Labels certifying the new status of adjustment of the boiler

Figure 6.7 - Correspondence table for the parameter 3002 and the operating values

Page 35

MYDENS 60

COSMOGAS

Figure 6.8 - Gas valve

A - Gas inlet pressure point.

6 - OPERATING

6.5 - Ignition

1.- open the gas cock;

2.- power the boiler electrically;

3.- adjust the temperature required from the heating service

using the

and keys. The icon , present on the display will inform regarding the operating state of the heating service:

a) xed icon

: central heating inactive (check that the room thermostat is in call mode or, in the case of external mode, that the external temperature is lower than the central heating switch-off external temperature

(par 2020);

b) ashing icon

: means that the central heating mode

is operating.

4. -adjust the temperature required for the domestic hot water

service using the

and keys. The icon , present on the display will inform regarding the operating state of the domestic hot water service:

a) xed icon

: domestic hot water inactive (no-one is withdrawing domestic hot water, or in the case of a Indirect Water Heater, the delivery temperature is

reached)

b) ashing icon

: domestic hot water is being withdrawn.

5.- if the icon

ashes, but the radiators do not heat-up,

it may mean that the pump (see gure 3.1 detail “7”) is

blocked. It must be unblocked by operating on the relevant

screws. TO do this remove screw “6” in gure 3.1 and turn the screw below to unblock the pump;

6.- if the icon

ashes but the radiator still does not heat

up, bleed the air from the radiators again.

6.6 - Controlling the supply gas pressure and any adjustment

The gas supply pressure must correspond to that stated in the table in chapter 9 at the end of the manual. Proceed as follows to verify:

1.- close the gas cock;

2.- access the components inside the boiler, following the

procedure in chapter 8.2;

3.- loosen the pressure point “A” (see gure 6.8);

4.- connect to a manometer with resolution of at least 0.1

mbar (1 mmH2O);

5.- open the gas cock;

6.- check that the pressure does not exceed the value given in the table in chapter 9 under “ gas supply maximum

pressure”;

7.- make sure that any cocks and thermostatic valves

downstream from the central heating circuit are open;

ATTENTION !!! During forcing of the delivery

temperature, it automatically goes to 93°C to give the possibility to dispose of as much of the heat generated by the boiler as possible. Check that the central heating plant can support this temperature.

8.- premere contemporaneamente per più di 5 secondi

press the

and RESET key simultaneously for

more than 5 seconds to enter the “installer” menu,

conrmed by the appearance of the icon

on the

display.

9.- using the

and keys access the

parameter 2010;

10.- press the RESET key to enter the parameter and use the

and keys, to modify the value to HIgH;

11.- press the RESET key to conrm the modication. Now

the burner will operate at maximum power for 10 minutes.

12.- check that the pressure does not drop to a value lower than the “gas supply minimum pressure” given in the table in chapter 9. If the supply pressure does not respect the values described, operate upstream from the appliance in order to take it back within the minimum and

maximum eld;

13.- Once the control has ended, press the RESET key

again to enter parameter

2010 and via the

and

keys, change the value to OFF;

14.- press the RESET key to conrm the modication;

15.- hold the RESET key down for 5 seconds to exit the

“installer” menu;

16.- close the pressure point “A” in gure 6.8;

17.- check for any gas leaks from the point with relevant control methods.

ATTENTION !!! Perform the leak test using a soap

and water only. The use of naked ames is prohibited.

020002.01.023

Page 36

MYDENS 60

COSMOGAS

Figure 6.9 - Combustion agent air pressure point

Figure 6.11 - Controlling combustion agent air pressure

6.7 - Controlling the combustion

agent air pressure

As the boiler has an air/gas ratio xed in the factory, the gas

pressure at the burner is controlled indirectly by measuring the pressure of the combustion agent air inside the boiler and must correspond to that stated in the table in chapter 9, under “Combustion agent air pressure”. Proceed as follows for the check (refer to the Figures from

6.9 to 6.12):

1.- use a differential manometer with precision of at least 0.1

mbar (1 mmH2O);

2.- close the gas cock;

3.- open the boiler casing following chapter 8.2;

4.- remove the caps “A” (see gure 6.9);

5.- take the exible hose “D”, which is found inside the appliance and remove the cap “B” (see gure 6.9);

6.- insert the pipe “D” inside the hole indicated by the arrow

in gure 6.9;

7.- loosen the pressure point “H” in gure 6.10;

8.- take a silicone pipe with external diameter of 10 mm and

internal diameter of 7mm (detail “E” in gure 6.10) and introduce it into pressure point “H”;

9.- insert pipe “E” into the hose as indicated in gure 6.11;

10.- connect the manometer to the two pipes “E” and “F” as

illustrated in gure 6.12, making sure to connect the pipe “E”

to the negative pressure point and tube “F” to the positive

pressure point;

11.- close the casing “B” in gure 8.1. It is indispensable

to have a reliable measurement;

12.- switch the boiler on;

13.- press the

and RESET keys simultaneously

for more than 5 seconds to enter the “installer” menu,

conrmed by the appearance of the icon

on the

display.

14.- using the

and keys, access the

parameter 2010;

15.- press the RESET key to enter the parameter and use the

and keys, to modify the value to FAn;

16.- press the RESET key to conrm the modication. Now

the fan will operate at maximum speed for 10 minutes.

17.- compare the pressure value read on the manometer with that given in the table in chapter 9, “Combustion agent air pressure”. If the pressure is at a lower value, check that there are no obstructions in the combustion agent air/fumes exhaust or that the air intake/fumes exhaust system is not longer than envisioned in chapter 9 under “Max. length of

fumes pipe”;

18.- once the control has ended, press the RESET key again

to enter parameter

2010 and via the and

keys, change the value to

OFF;

19.- press the RESET key to conrm the modication;

20.- hold the RESET key down for 5 seconds to exit the “installer” menu.

At the end of the control, remove the tube “E”, close the holes in the lower frame with the caps “A”, close the pipe “D” using cap “B” and close the pressure point “H” again as

in gures 6.9 and 6.10.

6 - OPERATING

C B

020002.01.019

020002.01.020

Figure 6.10 - Combustion agent air pressure point

020002.01.022

Page 37

MYDENS 60

COSMOGAS

Figure 6.13 - Combustion analysis points

6.8 - Controlling the level of

CO2 and any adjustment

The boiler in normal operating mode and for altitudes within 1000

m, has a level of CO2 (carbon dioxide) in the fumes which can be

detected in the table in chapter 9. A value different to those reported can cause malfunctions. Combustion analysis must be performed to check and eventually adjust this value. Proceed as follows:

1.- check a combustion analyser to the appropriate point on

the fumes exhaust tting “S” in gure 6.13;

2.- make sure that any cocks and thermostatic valves

downstream from the central heating circuit are open;

ATTENTION !!! During forcing of the delivery

3.- press the

and RESET keys simultaneously

for more than 5 seconds to enter the “installer” menu,

conrmed by the appearance of the icon

on the

display.

4.- using the

and keys access the

parameter 2010;

5.- press the RESET key to enter the parameter and use the

and keys, to modify the value to HIgH;

6.- press the RESET key to conrm the modication. Now

the burner will operate at maximum power for 10 minutes.

7.- wait for the CO2 measurement to stabilise;

8.- compare the value measured with that given in the

table in gure 6.7, “CO2 maximum power”. If the value

measured is offset from the value read, it must be taken

back within the value given in the table in gure 6.7.

proceeding as follows:

a) turn screw “A” clockwise as in gure 6.14 to decrease

the level of CO2;

b) turn screw “A” anti-clockwise as in gure 6.14 to increase

the level of CO2;

9.- Once the check has been completed, seal the screw “A”

in gure 6.14 with red pain or similar system;

10.- press the RESET key again to enter the parameter

2010 and use the and keys, to modify

the value to

LOu;

11.- press the RESET key to conrm the modication. Now

the burner will operate at minimum power for 10 minutes.

12.- wait for the CO2 measurement to stabilise;

13.- compare the value measured with that given in the

table in gure 6.7, “CO2 minimum power”.

If the value measured is offset from the value read, it must

be taken back within the value given in the table in gure

6.7. proceeding as follows:

a) turn screw “B” anti-clockwise as in gure 6.14 to decrease

the level of CO2;

b) turn screw “B” clockwise as in gure 6.14 to increase

the level of CO2;

14.- Once the check has been completed, seal the screw “B”

in gure 6.14 with red paint or similar system;

15.- press the RESET key again to enter the parameter

2010 and use the and keys, to modify

the value to

OFF;

16.- press the RESET key to conrm the modication.

17.- hold the RESET key down for 5 seconds to exit the “installer” menu.

6 - OPERATING

Figure 6.14 - Gas valve

A - CO2 adjustment screw at maximum power; B - CO2 adjustment screw at minimum power;

020002.01.045

020002.01.021

Figure 6.12 - Controlling combustion agent air pressure

020005.01.006

Page 38

MYDENS 60

COSMOGAS

Figure 6.15 - Corresponding values to introduce

into the parameter

2002 to obtain the desired

power necessary in central heating mode

6 - OPERATING

Power necessary

(kW)

Values for

parameter 2002

60 100 59 98 57 94 55 90 53 86 51 83 49 79 47 75 45 71 43 68 41 64 39 60 37 56 35 53 33 49 31 45 29 41 27 38 25 34 23 30 21 26 19 23 17 19 15 15 13 11 11 8

9 4

7,5 1

ATTENTION !!! If during forcing, the power

supplied by the boiler is much higher than the power absorbed by the plant, the boiler switches off continuously to reach the maximum temperature allowed (93°C). To remedy this problem the heating power must be set at the effective plant requirement, as laid down in chapter 6.9 and the CO2 analysis test or

combustion efciency test must be carried out, setting

parameter

2010 previously referred to at the rEg

value.

6.9 - Adjustment of the power in

central heating mode (Range Rated)

This appliance is designed and type-approved to adapt the maximum heating power to the effective necessity of the plant as per calculation. To do this and to use the boiler’s potentiality to its best, it is recommended to set the maximum power in central heating mode at the effective requirement of the plant. Operate as follows:

1.- press the

and RESET keys simultaneously

for more than 5 seconds to enter the “installer” menu,

conrmed by the appearance of the icon

on the

display.

4.- using the

and keys, access the

parameter 2002;

5.- press the RESET key to enter the parameter and using the

and keys modify the value corresponding to the power required by the plant, according to the table in Figure 6.15.

6.- Press the RESET key to conrm the modication.

7.- Hold the RESET key down for 5 seconds to exit the “installer” menu.

Page 39

MYDENS 60

COSMOGAS

7 - USE

Figure 7.1 - Control board

KEY FOR FIGURE 7.1

A - Key for reducing the central heating temperature (below

minimum the central heating is put in OFF)

B - Reset Key C - Key for switching-on and increasing the heating

temperature

D - Burner status (the burner is on when this icon is present)

E - Status of the heating service: Icon off = Central heating off Icon on = Central heating active but not operating

Icon ashing

= Central heating active and operating F - State of the domestic water service: Icon off = Domestic water off Icon on = Domestic hot water active but not operating

Icon ashing

= Domestic hot water active and operating G - Icon for entry into the “Installer” menu H - Unit of measurement of the pressure displayed L - Status of the cascade pump (if the icon is present, the

pump is on)

M - Central heating plant pressure or indicator of the

various parameters inside the various menus

N - Temperature of the central heating or domestic hot

water or indicator if the values assumed by the various

parameters O - Unit of measurement of the temperature displayed P - Central heating service adjusted by the external sensor Q - Boiler blocked (see chapters 7.19.1 and 7.19.2 for the

diagnostics)

R - Key for increasing the domestic hot water temperature

and to scroll and change the value of the parameters S - Key for reducing the domestic hot water temperature

and to scroll and change the value of the parameters T - On/Off switch

7.1 - Controlling cock opening

- The gas cock must be open;

- Any valves positioned on the ow and return must be open;

7.2 - Checking central heating plant pressure

If the pressure inside the central heating circuit drops below

0.5 bar, the visual display “N” in gure 7.1, shows

FILL

to indicate that the correct pressure must be restored. Proceed as follows:

1.- open the device envisioned by the installer upstream

from the appliance in order to load the plant;

2.- check the pressure on the visual display “M” in Figure

7.1; it must reach the pressure of 1.5 bar (the FILL indication must disappear);

3.- close the device envisioned by the installer upstream from the appliance.

ATTENTION !!! During normal operation, the device envisioned by the installer upstream from the appliance for loading the plant, must always remain in the closed position.

If the pressure drops through time, restore the correct value. This operation may have to be repeated several

times in the rst month of operation to remove any air

bubbles in the plant.

Page 40

MYDENS 60

COSMOGAS

7 - USE

7.3 - Generalities

During operation the display shows the boiler operating state as well as other information as indicated in chapter

7.19 (Diagnostics).

Other parameters can be consulted through the

“User menu” (see chapter 7.17), which are useful for

understanding operation of the appliance and to control the latest blocks or errors occurring. After 5 minutes of normal operation, the display switches off completely to save energy. Just press any key to switch it back on. In the case of any anomaly, the display switches back on automatically.

This function can be modied by following chapter 7.16 (Energy saving).

7.4 - Ignition procedure

1.- open the gas cock;

2.- power the boiler electrically;

3.- adjust the domestic hot water temperature, if present, and of the central heating respectively as per chapters 7.8 and 7.9.

The command and control equipment will switch the burner on. If ignition does not take place within 20 seconds, the boiler automatically re-attempts ignition 3 times, after which if it still

does not ignite, it blocks and the display will indicate Loc

1. Press the RESET key to restore the normal operating

conditions. The boiler will automatically attempt a new ignition.

ATTENTION !!! If shutdown due to blocking is

repeated frequently, contact a qualied technician to reset

the normal operating conditions.

Once the boiler has been ignited correctly, it will continue to operate for the service requested.

7.5 - “User menu”

Entry into the “User menu” is highlighted by the visual display

“M”, in gure 7.1, which indicates parameters that can assume

values from 1001 to 1999. To enter the “User menu”:

1.- hold the RESET key down for 2 seconds until the visual

display “M” shows 1001;

2.- press the

and keys to scroll the parameters

situated inside the user menu;

3.- hold down the RESET key for more than 2 seconds to

exit the “User menu”;

If no key is pressed for more than 60 seconds, the menu is exited automatically. The parameters in chapter 7.17 can be queried in this menu.

7.6 - Summer operating mode

Whenever the central heating function is to be interrupted for a long period of time, leaving only the domestic hot water function operating, adjust the central heating temperature to

minimum using the

or key until 0FF appears.

7.7 - Winter operating mode

In winter operating mode, using the pump, the boiler sends the water to the plant at the temperature set using the

or keys. When the temperature inside the

boiler approaches the temperature set, the burner starts to

modulate the ame until the power is reduced to the effective

requirement of the plant. If the temperature tends to rise further, the burner stops.

At the same time, the pump that sends water to the plant is switched on and off by the room thermostat. This can be

noted because the indicator

, ashes when the pump

is on, while it remains on with a xed light when the pump

is off. The pump may initially make a noise. This is due to the presence of residual air in the hydraulic plant, which will disappear quickly, without any intervention. For rational use of the boiler, it is recommended to keep the

central heating temperature, adjusted using the

keys, at the lowest value possible, compatibility with the temperature requested in the rooms. If the winter season is particularly cold, meaning the room temperature can no longer be maintained, raise the central heating temperature to higher values.

7.8 - Adjusting the domestic hot water (if a Indirect Water Heater is present)

The temperature of the domestic hot water is adjusted by

operating on the

and keys. On pressing one

of the two keys, the visual display “N” in gure 7.1 will start to ash and show the temperature that is being set. The range

of regulation within which the temperature of the domestic hot water can be adjusted goes from 40°C to 70°C. By holding

the key

down also below 40°C, the word OFF will

appear to indicate switch-off of the domestic hot water service,

highlighted by the switch-off of the “F” icon shown in gure 7.1.

7.9 - Central Heating

Using the parameter 2003 present in the “Installer menu”

(see chapter 7.18) it is possible to select different operating

modes of the central heating service:

2003 = 00; “Thermostatic adjustment”: the central heating

ow temperature is adjusted manually via the

or keys. The opening and closing of the room thermostat stops or starts the boiler pump correspondingly

in order to adjust the room temperature;

2003 = 01; “Climatic adjustment”: The icon , appears

on the display, the ow temperature to central heating is

adjusted automatically by the external temperature sensor according to the algorithm corresponding to Figure 7.2. The opening and closing of the room thermostat stops or starts the boiler pump correspondingly. When the external

temperature rises above the value set in parameter 2020

(Central heating switch-off external temperature), the

central heating service ends. It re-starts automatically when the external temperature drops below the temperature set

in the parameter 2020 again.

- 2003 = 02; “Climatic adjustment with room compensation”:

The icon

appears on the display, the ow temperature

to central heating is adjusted automatically by the external temperature sensor according to the algorithm corresponding to Figure 7.2. The opening of the room

thermostat reduces the temperature if the ow to central

heating by a value set in the parameter 2027. The boiler pump operates constantly. When the external temperature

rises above the value set in parameter 2020 (forced

central heating switch-off), the central heating service ends.

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It re-starts automatically when the external temperature drops below the temperature set in the parameter 2020

again (forced central heating switch-off).

7.10 - Thermostatic adjustment

In the factory the boiler is adjusted with the parameter 2003 to 00, i.e. the boiler supplies hot water to the central heating

plant at a temperature adjusted using the or

keys. Any room thermostat operates directly on the pump inside the boiler to adjust the heating of the rooms.

To make full use of boiler efciency, it is recommended to adjust the temperature to a value just sufcient to obtain

the temperature desired by the rooms. If the season gets colder, progressively increase the value of the central heating temperature. Proceed in reverse order when the season goes towards warmer temperatures. This very simple operating method is suitable for the following types of plants:

- small plants, with radiators, having a room whose temperature

is characteristic of all other rooms;

- large plants, with radiators, where each area is controlled by its own room thermostat and the boiler pump is stopped

only when all area thermostats are satised (envision the appropriate electric plant).

- large plants, with radiant panels (low temperature), where

each area is controlled by its own room thermostat and the boiler pump is stopped only when all area thermostats are

satised (envision the appropriate electric plant).

7.11 - Climatic adjustment

Using the “Installer menu” adjust the parameter 2003 to

01. The central heating ow temperature is reported to the

external temperature sensor according to the algorithm in

gure 7.2. To adapt the calculation line to the various hones/

climatic conditions, all adjustment parameters must be set according to the following chapters.

7.11.1 - Climatic adjustment: on which

plants?

The “Climatic adjustment” is a more sophisticated and precise adjustment than the “Thermostatic adjustment”. This can

make the most use of the boiler efciency and is suitable for

the following types of plant:

- small plants, with radiators, having a room whose temperature is characteristic of all other rooms.

The room thermostat makes the appropriate corrections to the

room temperature by switching the boiler pump on and off.

- large plants, with radiators, where each area is controlled by its own room thermostat and the boiler pump is stopped

only when all area thermostats are satised (envision the appropriate electric plant).

- small plants, with radiant panels (low temperature), having a

room whose temperature is characteristic of all other rooms. The room thermostat makes the appropriate corrections to the room temperature by switching the boiler pump on and off.

- large plants, with radiant panels (low temperature), where

each area is controlled by its own room thermostat and the boiler pump is stopped only when all area thermostats are

satised (envision the appropriate electric plant).

7.11.2 - Climatic adjustment: precautions during adjustment

To set the ow temperature correctly, it is good practice to immediately set the line setting values in gure 7.2. If these

values do not give a satisfactory result, proceed with the

relevant modications, keeping in mind that:

- every parameter must be adjusted in small degrees;

- after each change, wait at least 24 hours to see the result;

- the more the adjust ment line app roach es the real requirements of the building, the more building central heating will be comfortable and the greater the energy

saving will be;

- using the or key, it is possible to make the

small corrections highlighted in gure 7.2, i.e. move the

parallelism of the line, in steps of 1 °C more or less, up to 10°C.

7.11.3 - Climatic adjustment: setting the

parameters

Using the “Installer menu” (see chapter 7.18), set:

- 2020 = “External switch-off temperature of the central heating”, adjustable between 0 and 35°C. When the external temperature reaches the value set in this parameter, the central heating is switched-off automatically. The central heating switches back on automatically when the external temperature drops back below this value. The recommended start value is 22°C.

- 2021 = “Design external temperature (winter)”, adjustable between -20 and 5°C. It is the design external temperature

used to dene the heat output necessary at the plant. The value recommended for a typical home is -5°C;

- 2022 = “Flow temperature corresponding to the design

external temperature (winter)”, adjustable between 0 and 80°C. The ow temperature assumes the value set in this

parameter when the external temperature corresponds to that set in the parameter 2021. The recommended start

values are: 40°C for low temperature plants (oor heating); 67°C for high temperature plants (radiators);

- 2023 = “External spring-like temperature”, adjustable between 0 and 30°C. It is the external temperature at

which the central heating is to reach the minimum ow temperature. The recommended start value is 18°C;

- 2024 = “Flow temperature corresponding to the external spring-like temperature”, adjustable between 0 and 40°C.

The ow temperature assumes the values et, it corresponds

to that set in the parameter

2023. The recommended

start values are: 30°C for low temperature plants (oor heating); 42°C for high temperature plants (radiators);

- It is always possible to set the minimum and maximum central heating temperatures using the respective parameters

3016 and 3015 present in chapter 11.

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Figure 7.2 - Climatic adjustment graphics for “high temperature” plants (with radiators)

External temperature (°C)

Calculated temperature (°C)

Par. 2020 = External temperature for central heating switch-off Par. 2021 = Project external temperature (winter) Par. 2022 = Flow temperature corresponding to the project external temperature (winter) Par. 2023 = Spring-like external temperature Par. 2024 = Flow temperature corresponding to the spring-like external temperature Par. 3016 = Minimum ow temperature Par. 3015 = Maximum ow temperature

= Line parallelism increase key

= Line parallelism decrease key

7 - USE

Par. 2021

Par. 2023

Par. 2020

Par. 3016

Par. 2024

Par. 2022

Par. 3015

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7.11.4 - Climatic adjustment: adaptation to different climatic areas

The previously recommended values are for homes with average insulation and for climatic areas where the external temperature used for calculating heat requirement is

-5°C (with this data and a high temperature plant, there is

correspondence with the graphics in Figure 7.2). If the climatic

area is different, adjust parameter 2021 “Design external

temperature (winter)” in a way to obtain a ow temperature of 67°C (40°C in the case of “Low temperature” plants), when

the external temperature is that of the calculation base of the heat requirement.

7.11.5 - Climatic adjustment: switching the central heating service on and off

The climatic adjustment service is completely automatic, also regarding switch-off at the end of the season and successive switch-on at the start of the next season via the parameter

2020. When the external temperature rises above the value

set in this parameter, the heating switches off automatically. When the external temperature drops back below the value set in this parameter, the central heating service switches back on automatically.

7.11.6 - Climatic adjustment with room compensation

Using the “Installer menu” (see chapter 7.18) adjust the

parameter 2003 to 02. Everything operates exactly as in

the previous chapters relative to the “Climatic adjustment”, with the difference that now the boiler pump is always on. The opening of the room thermostat contact translates into a parallel downward movement of the line regarding the value

set on the parameter, 2027 as in gure 7.2 present in the “Installer menu” (see chapter 7.18). Parameter 2027

can assume values between 0°C and 50°C. The values recommended for this parameter are:

- 10°C for high temperature plants (radiators);

- 3°C for low temperature plants (oor).

Values of this parameter that are too high can translate into instability of the room temperature. Values that are too low can make the room thermostat ineffective.

The climatic adjustment with room compensation can be used in all cases envisioned in chapter 7.11.1, with the advantage that continuous operation of the pump manages to stabilise

and make the room temperatures uniform; especially in the case in which several heat plant loops have the ow

resistances that are much higher than others.

7.12 - Timers of the various functions

To safeguard the lifespan of the appliance, improve the comfort generated and increase energy saving, timings have been introduced during operation. These timings are:

- Pump post-circulation: every time that the room thermostat determines the end of the central heating service, the pump

continues to operate for 3 minutes;

- Central heating delay: every time that the domestic hot water

service nishes, before reactivation of the central heating service there is a stand-by period of 2 minutes;

- Pumps anti-block and diverter valve: every 24 hours, the central heating pump, the domestic hot water pump (if

present) and the diverter valve are forced;

- Anti-legionella; if the boiler is connected to a Indirect Water

Heater for preparation of the DHW., every seven days the latter is forced to a temperature of 60°C to disinfect against the legionella bacteria. This function activates also due hours after the boiler has been powered electrically.

- Ignition delay: In all operating modes, excluding domestic hot water mode, wait 3 minutes to ignite the burner again when it switches off.

7.13 - Pump anti-block

The pump switches on once every 24 hours for 15 seconds during the summer period in order to prevent any deposits that may block it. The diverter valve and the Indirect Water

Heater pump (if present) are activated at the same time for

the same reason.

7.14 - Anti-freeze protection

ATTENTION !!! For the anti-freeze protection

to be effective, the appliance must be left with electric power supply and gas supply present and the two services (domestic hot water and central heating) in the

OFF position.

ATTENTION !!! The anti-freeze protection

service offered by the boiler cannot guarantee the anti-freeze protection of the central heating plant, the domestic hot water plant or the building served or part of the same.

The central heating pump starts automatically when the boiler temperature reaches 10°C. If the temperature drops further below 5°C, the burner also ignites in a way to protect the boiler from the effects deriving from freezing.

If the boiler is not used for a long period of time (over a year),

it is recommended to empty it following the procedure in chapter 8.12.

7.15 - Automatic plant loading

(not recommended)

It strongly not recommended to use an automatic plant loading device for the reasons given in chapter 5.6.

7.16 - Energy Saving

To reduce the consumption of display energy, it will switch off automatically after 5 minutes from the last operation performed. This function can be deactivated or the time

modied via parameter 2100 in the “Installer menu”. If the parameter is set at OFF, the display will remain on constantly.

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7.17 - “User menu”

Press the RESET key for 2 seconds to access the “User

menu”. The visual display “M” in gure 7.1, starts to show

parameter 1001 to inform the use of the mode change.

Using the

and key, scroll the parameters contained in the menu. Just press the RESET key again for 2 seconds to exit the menu.

If no key is pressed for more than 60 seconds, the menu is exited automatically. The following parameters can be queried in this menu:

Parameter Description of the parameter M.U. 1001 Central heating ow temperature °C 1002 Domestic hot water temperature (or Indirect Water Heater temperature, if present) °C 1003 No function / 1004 External temperature (visible when an external temperature sensor is installed) °C 1005 Central heating ow temperature (safety sensor) °C 1006 Fumes temperature °C 1007 Return ow temperature °C 1008 Ionisation current uA 1009 Status of the pump inside the boiler ON/OFF 1010 Status of the central heating side diverter valve (ON = in central heating mode; OFF = in D.H.W. mode) ON/OFF 1011 Status of the D.H.W. side diverter valve (ON = in D.H.W. mode; OFF = in central heating mode) ON/OFF 1012 Central heating ow temperature calculated via the external sensor °C 1013 Status of the room thermostat contact

(OPEN = no central heating request; CLOSED = presence of central heating request)

OPEN/CLO-

SED 1014 Fumes temperature (safety sensor) °C 1040 Current rotation speed of the fan rpm 1041 Fan rotation speed on ignition rpm 1042 Fan rotation speed in minimum power mode rpm 1043 Fan rotation speed in maximum power mode rpm 1051 Latest block condition recorded (Loc) (see chapter 7.19.1) / 1052 Latest error condition recorded (Err) (see chapter 7.19.2) / 1053 Number of times the burner has lost the ame n° 1055 Number of failed burner ignitions n° 1056 Number of hours worked in central heating mode h x 10 1057 Number of hours worked in domestic hot water mode h x 10 1058 Number of burner working days day 1059 Interval of time between the last two blocking errors (Err)

1 value in minutes; 2 value in hours;

3 value in days; 4 value in weeks;

1060 Interval of time between the last two blocks (Loc)

1061 Current rotation speed of the domestic hot water turbine rpm 1062 Current domestic hot water ow rate l/min

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7.18 - “Installer menu”

ATTENTION !!! The modication of these

parameters could cause the boiler, and therefore the plant, to malfunction. For this reason only a technician that has the awareness and in-depth knowledge of the appliances can modify them.

The boiler command and control board makes this parameter menu available to the technician, for the analysis of operation and adaptation of the boiler to the plant. Proceed as follows to enter the “Installer menu”:

1.- hold the RESET and

keys down simultaneously

for 5 seconds until the 2001 parameter is displayed.

The symbol

appears on the display to indicate the

entry into the “Installer menu”.

2.- the

and keys can be used inside the

menu to scroll the parameters;

3.- once the parameter of interest has been displayed, it

can be modied as follows:

a.- press the RESET key to access the parameter (the

visual display “N” in gure 7.1 will start to ash);

b.- modify the value of the parameter using the

and

key;

c.- press the RESET key to conrm the data modied

and go back to the list of parameters;

4.- To exit the “Installer menu”, hold down the RESET key

for 5 seconds until the symbol

disappears from the

base of the display.

If no key is pressed for more than 5 minutes, the menu is

exited automatically.. Any data variation that is not conrmed

with the RESET key will be lost.

ATTENTION !!! Any variation to the parameters must be noted in the “Customised values” column present in the following table in order to facilitate the eventual replacement of the command and control board.

The following parameters can be changed or queried in this menu:

7 - USE

Parameter Description of the parameter M.U. Setting range

Factory value

Customised values

2001 Central heating minimum power level % From 1 to 50 1

2002 Central heating maximum power level % From 1 to 100 100

2003 Central heating operating mode nn 00 = Central heating with room

thermostat 01 = Central heating with room thermostat and climatic adjustment 02 = Central heating with total climatic adjustment 03 = Permanent central heating

2004 Stand-by time after maximum differential sec From 0 to 30 10

2005 Post-circulation in central heating mode sec From 10 to 900 120

2010 Forcing of fan and burner / OFF = No forcing

FAN = Forcing of fan only to max speed LOu = Forcing of burner to minimum power Ign = Forcing of burner to ignition power HIgH = Forcing of burner to maximum power rEg = Forcing of burner to power (Par.2002)

OFF

2011 Forcing the pump / On = Pump on

OFF = Pump off

OFF

2012 Forcing of the central heating side diverter valve / ON = in central heating mode;

OFF = in D.H.W. mode

OFF

2013 Forcing of the domestic hot water side diverter valve / ON = in D.H.W. mode;

OFF = in central heating mode

OFF

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2014 Icons test on the display. By pressing the RESET key, all of the

icons on the display light up. By pressing the RESET key again to display goes back to normal operation

/ / /

2020 Climatic adjustment: external temperature for central heating

switch-off

°C From 0 to 35 22

2021 Climatic adjustment: project external temperature (winter) °C From -20 to 5 -5

2022 Climatic adjustment: ow temperature corresponding to the

project external temperature (winter)

°C From 0 to 80 80

2023 Climatic adjustment: external spring-like temperature °C From 0 to 30 20

2024 Climatic adjustment: ow temperature corresponding to the

external spring-like temperature

°C From 0 to 40 40

2027 Temperature reduction by room thermostat opening °C From 1 to 50 10

2040 Climatic adjustment: central heating boost temperature °C From 0 to 20 0

2041 Climatic adjustment: central heating boost time min From 0 to 30 20

2042 Protection against frequent switch-on in central heating mode:

time

sec From 10 to 900 180

2043 Protection against frequent switch-on in central heating mode:

temperature differential

°C From 0 to 20 16

2060 Domestic hot water minimum power level % From 1 to 50 1

2061 Domestic hot water maximum power level % From 1 to 100 100

2062 Post-circulation in domestic hot water mode sec From 10 to 900 120

2063 Maximum time for charging Indirect Water Heater min From 0 to 60 60 /

2064 Number of ow meter revs. for every litre of water rpm/lt From 0 to 5 3,2

2066 Delay in the detection of the instantaneous domestic hot water sec From 1 to 10 3

2067 Indirect Water Heater charging procedure / 0 = the Indirect Water Heater

charging for the time set in the parameter 2063; 1 = OFF, the domestic hot water does not have priority over heating; 2 = ON, the domestic hot water always has priority over heating;

2080 Periodic maintenance meter

(after RESET, the meter automatically goes back to ON)

/ ON = Periodic maintenance

meter active; OFF = Periodic maintenance meter off; RESE = Meter reset

OFF

2081 Periodic maintenance meter: maintenance request time days From 0 to 1000 1000

2100 Energy saving display min OFF = display always on

From 1 to 30 = delay to switchoff in minutes.

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7.19 - Diagnostics

During normal appliance operation, the visual display “N”

in gure 7.1, continuously shows the working status of the

appliance via the following indications:

Parameter Description of the parameter Display on visual display “N” in gure 7.1

AFro

Anti-freeze function active Appliance temperature (°C)

AttE

Boiler not in block but in attention mode Attention code (see chapter 7.19.3 for decoding)

FILL

Plant pressure too low, perform loading (see chapter 6.1.3) FILL

Fixed on = Domestic hot water service on but not active

On ashing = Domestic hot water service on and active

Domestic hot water temperature (°C)

Fixed on = Central heating service on but not active

On ashing = Central heating service on and active

Central heating temperature (°C)

Loc

Boiler blocked. To reset, press RESET. If the block occurs

frequently, contact a professionally qualied technician

Block code (see chapter 7.19.1 for decode)

Err

Boiler in error mode. Functioning can only be restored by solving the cause of the anomaly. Contact a professionally

qualied technician

Error code (see chapter 7.19.2 for decode)

ALEg

Anti-legionella function running (see chapter 5.15.1). It will end on reaching the water temperature of 60°C inside the Indirect Water Heater.

Indirect Water Heater temperature (°C)

SEr

Maintenance request for the boiler Appliance temperature (°C)

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7.19.1 - Diagnostics: blocks “Loc”

Block Description of block Checks Solutions

Loc 0 Internal memory error

E2prom at command board

Replace the command and control board.

Loc 1 No ame detection after

three successive ignition attempts.

Control: Supply gas pressure (see chapter 6.6), sparks on the ignition electrodes (see chapter

8.5);correct combustion agent air pressure (see chapter 6.7); 220 Vac electric power supply to the gas valve; electric resistance of the two gas valve coils of 0.88 Kohm and 6.59 Kohm

If the burner switches on and switches off at the end of the ignition attempt, check: that the ionisation current is at a value over 60 (follow the procedure in chapter 8.15)

If the supply pressure is not correct, operate upstream from the appliance to restore it; if the pressure of the combustion agent air is not correct, operate on the air intake/fumes exhaust circuit to eliminate any obstructions. If the current at the gas valve is not 230Vac, the command and control board must be replaced. If the electric resistance of the gas valve is not 0.88 Kohm and 6.59 Kohm, the valve must be replaced.

If the ionisation current is not over 60, the CO2 must be checked (follow chapter 6.8) and restore its correct value, check the ionisation electrode and replace it if necessary. Check the integrity of the ionisation current electric circuit cables.

Loc 2 Gas valve command relay

broken

Replace the command and control board.

Loc 3 Int e rnal s afet y rela y

failure at command board

Ceck the appliance main ground. Replace the command and control board.

Loc 4 Boiler in error mode for

more than 20 hours

Control the last error displayed in the board. Operate according to the last error displayed.

Loc 5 Fan out of speed for

more than 60 seconds

Control it is powered at 300 Vdc. If the fan is powered, it must be replaced, differently

replace the board.

Loc 6 Software error inside the

command board

Replace the command and control board.

Loc 7 Content of the memo-

ry E2prom inside the command board, not updated

Replace the command and control board.

Loc 8 Parameters inside

the E2prom memory, incorrect

Replace the command and control board.

Loc 9 Software error inside the

command board

Replace the command and control board.

Loc 10 Software error inside the

command board

Replace the command and control board.

Loc 11 Not applicable

Loc 12 Not applicable

Loc 13 The boiler has reached

95°C

Control that the pump functions. Restore water circulation or replace the command

and control board.

Loc 14 Fumes maximum tempe-

rature.

Check there is no air in the central heating circuit; bleed the highest radiators;

Check the circulation pump operates correctly;

Measure boiler efciency; it must correspond to that

declared in the technical features..

Bleed the air from the boiler and from the highest central heating elements with respect to the boiler.

If the pump does not operate, it must be replaced.

If the efciency does not correspond to the data at the

end of the manual, probably the primary heat exchanger is dirty from the fumes side or the water side.

Clean and check efciency again.

Loc 15 Software error inside the

command board

Replace the command and control board.

Loc 16 Software error inside the

command board

Replace the command and control board.

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Loc 17 Software error inside the

command board

Replace the command and control board.

Loc 18 Flame present 10

seconds after gas valve is closed

Replace the gas valve or the command and control board.

Loc 19 Flame present before

ignition

Replace the gas valve or the command and control board.

Loc 20 Flame lost three times Control: that the ionisation current is at a value over

60 (follow the procedure in chapter 8.15)

Control: that the fumes exhaust is suitably protected from obstructions caused by gusts of wind

If the ionisation current is not over 60, the CO2 must be checked (follow chapter 6.8) and restore the correct value. Check the ionisation electrode and replace it if necessary. Check the integrity of the ionisation current electric circuit cables.

If the fumes exhaust is placed in a vertical wall it must be protected with a wind-proof grid. If the fumes exhaust is positioned on the roof, make sure that it is

not in an area of reux and that any windproof chimney pot is really efcient.

Loc 21 Not applicable

Loc 22 Not applicable

Loc 23 The two ow sensors

measure the different temperatures for more than 60 seconds.

Check that the electrical resistance of the two sensors match the graphics in chapter 8.17;

Check that the central heating circuit ow rate is not

too low;

If one of the two or both sensors do not have correct values, they must be replaced;

If the temperature difference between U1 and U8 is

greater than 30°C at maximum power and the ow rate of the central heating circuit is low, the ow rate

must be increased;

Loc 24 The two fumes sensors

measure the different temperatures for more than 60 seconds.

Check that the electrical resistance of the two fumes sensors match the graphics in chapter 8.17

If one of the two sensors does not match the double fumes sensor must be replaced

Loc 25 Too many lling of the

heating circuit in one hour

Check the pressure switch calibration 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 central heating plant

If the pressure switch is not calibrated correctly, it must be replaced. If the plant has a leak it must be repaired.

Loc 26 Plant lling time too long Check the pressure switch calibration pressure. FILL

must appear when the pressure drops below 0.6 bar; check that there are no water leaks from the central heating plant

If the pressure switch is not calibrated correctly, it must be replaced. If the plant has a leak it must be repaired.

Loc 27 Software error inside the

command board

Replace the command and control board.

Loc 28 Software error inside the

command board

Replace the command and control board.

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7.19.2 - Diagnostics: errors “E”

Error Error Description Checks Solution

Err 30 Software error inside the

command board

Replace the command and control board.

Err 31 Software error inside the

command board

Replace the command and control board.

Err 32 Software error inside the

command board

Replace the command and control board.

Err 33 Software error inside the

command board

Replace the command and control board.

Err 34 Software error inside the

command board

Replace the command and control board.

Err 35 The ow temperature

exceeds 110°C with the gas valve closed

Check that the electrical resistance of the two ow

sensors match the graphics in chapter 8.17.

Check that the gas valve closes the gas correctly when the burner switches off.

If one of the two sensors does not match, the double

ow sensor must be replaced.

The gas valve must be replaced if it does not close correctly.

Err 36 Software error inside the

command board

Replace the command and control board.

Err 37 Software error inside the

command board

Replace the command and control board.

Err 38 Software error inside the

command board

Replace the command and control board.

Err 39 Software error inside the

command board

Replace the command and control board.

Err 40 Software error inside the

command board

Replace the command and control board.

Err 41 Software error inside the

command board

Replace the command and control board.

Err 42 Software error inside the

command board

Replace the command and control board.

Err 43 Software error inside the

command board

Replace the command and control board.

Err 44 Flame detected in a

moment when it should not be present

Replace the gas valve.

Err 45 Central heating water

low pressure

Check the pressure switch calibration pressure. FILL must appear when the pressure drops below 0.6 bar; check that there are no water leaks from the central heating plant.

If the pressure switch is not calibrated correctly, it must be replaced. If the plant has a leak it must be repaired.

Err 46 Central heating water

pressure sensor error

Check the pressure switch calibration pressure. FILL must appear when the pressure drops below 0.6 bar; check that there are no water leaks from the central heating plant.

If the pressure switch is not calibrated correctly, it must be replaced. If the plant has a leak it must be repaired.

Err 47 Not applicable

Err 48 Software error inside the

command board

Replace the command and control board.

Err 49 Return sensor circuit

(1007) open

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 50 Flow sensor circuit 1

(1001) open

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

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7 - USE

Err 51 Flow sensor circuit 2

(1005) open

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 52 Domestic hot water inlet

sensor 2 circuit (1002) open

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 53 Fumes 1 sensor circuit

(1006) open

Check that the electrical resistance of the fumes sensor 1006 matches the graphics in chapter 8.17

Check that the wires between the board and the double fumes sensor are connected correctly

If the sensor does not match, the double fumes sensor must be replaced.

If the wires are not connected correctly, the connections must be restored.

Err 54 Fumes 2 sensor circuit

(1014) open

Check that the electrical resistance of the fumes sensor 1014 matches the graphics in chapter 8.17

Check that the wires between the board and the double fumes sensor are connected correctly

If the sensor does not match, the double fumes sensor must be replaced.

If the wires are not connected correctly, the connections must be restored.

Err 55 Not applicable

Err 56 Return sensor circuit

(1007) in short circuit condition

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 57 Flow sensor circuit 1

(1001) in short circuit condition

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 58 Flow sensor circuit 2

(1005) in short circuit condition

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 59 Domestic hot water inlet

sensor 2 circuit (1002) in short circuit condition

Check that the electric resistance of the sensor matches the graphics in chapter 8.17. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 60 Fumes 1 sensor circuit

(1006) in short circuit condition

Check that the electrical resistance of the fumes sensor 1006 matches the graphics in chapter 8.17

Check that the wires between the board and the double fumes sensor are connected correctly

If the sensor does not match, the double fumes sensor must be replaced

If the wires are not connected correctly, the connections must be restored

Err 61 Fumes 2 sensor circuit

(1014) in short circuit condition

Check that the electrical resistance of the fumes sensor 1014 matches the graphics in chapter 8.17

Check that the wires between the board and the double fumes sensor are connected correctly

If the sensor does not match, the double fumes sensor must be replaced

If the wires are not connected correctly, the connections must be restored

Err 62 External temperature

sensor circuit (1004) in short circuit condition

Check that the electric resistance of the sensor matches the graphics in chapter 8.18. Check the electric cables for connection between the sensor and the command board.

If the electric resistance does not match, replace it. The electric circuit must be repaired if it is damaged. Without either of the two previous cases, replace the command and control board.

Err 63 RESET key pressed too

many times in a very brief period

7.19.3 - Diagnostics: alarms“AttE”

Alarm Description of the

alarm

Checks Solutions

AttE 65 Central heating plant

pressure too low for more than 10 minutes

Check the pressure switch calibration pressure. FILL musty appear when the pressure drops below 0.6 bar; check that there are no water leaks from the central heating plant.

If the pressure switch is not calibrated correctly, it must be replaced. If the plant has a leak it must be repaired.

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8.1 - General recommendations

It is recommended to perform regular yearly maintenance of the central heating plant for the following reasons:

- to maintain high efciency of the appliance and therefore

save fuel;

- to maintain a high level of safety;

- to maintain the level of environmental compatibility of the

combustion high;

In order to maintain the frequency of maintenance, there is a parameter present 2080 in the installer menu (see

chapter 7.18), which is used to activate the maintenance call (Service) along with parameter 2081, which is used

to set the operating days that must pass between one call and the next.

NOTE: The day counter is based on the real operating days of the burner. Proceed as follows to activate the call service.

Per attivare il servizio di chiamata procedere come di seguito:

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

parameter 2080 on 0n;

2.- access parameter 2081 and set the boiler operating

days which must pass between one call and the next.

The call will be completed with SEr on the display. To remove the wording SEr and renew the call period,

operate as follows:

1.- access the “Installer menu”;

2.- access the parameter 2080, set it on rESE and

press the RESET key.

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

seconds.

The call time is now renewed and SEr appears on the display.

ATTENTION !!! Appliance maintenance must

only be performed by a professionally qualied

technician.

ATTENTION !!! Before every maintenance operation, disconnect the appliance from the electric power supply, using the relevant switch in the vicinity.

ATTENTION !!! Close the gas cock before any maintenance operation

8 - MAINTENANCE

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MYDENS 60

020005.01.007

COSMOGAS

Figure 8.1 - removing the casing and opening of command board

8.2 - Removing the casing and access to internal components

Proceed as follows to remove the casing (refer to gure

8.1):

1.- loosen the screws “A”;

2.- pull the lower part of the front-piece “B” towards the front

and then slide it out upwards until it is released from the

guides “C”;

To access the command and control board:

1.- turn the command board “D” towards the front;

2.- open the commands board “D” by operating on closure

“G”;

To access the electric connections board:

1.- turn the command board “D” towards the front;

2.- slide lid “E” out by operating on the closing aps “F”;

8 - MAINTENANCE

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8 - MAINTENANCE

8.3 - Removing the burner fan unit

Proceed as follows to remove the burner fan unit (refer to

gure 8.2 when not differently specied):

1.- access the internal components following chapter 8.2;

2.- remove the air manifold (detail “C” in gure 6.2) rotating

it towards the outside of the boiler and then pulling it

towards the right (see gure 6.2);

3.- unscrew nut “C” from the valve “D”;

4.- disconnect the cables “B” and the detection cable from the ignition and detection electrodes (details “8”, “36” and

“37” in gure 3.1);

5.- unscrew the four nuts “E”;

6.- extract the group “F” as per gure;

Figure 8.2 - Removing the burner fan unit

020005.01.008

8.4 - Cleaning the burner and the fumes side primary heat exchanger

To correctly clean the burner and body of the heat

exchanger (fumes side), proceed as follows (refer to gure

8.2 when not differently specied):

1.- access the internal components following chapter 8.2;

2.- remove the burner unit following chapter 8.3;

3.- pass a cylindrical brush with plastic bristles inside the combustion chamber “G”

4.- use a suction device to remove the unburned residues

present inside the combustion chamber “G”;

5.- use the same suction device on the surfaces of the

burner and around the electrodes;

6.- re-mount the components in reverse order;

7.- open the gas cock;

8.- restore the electric power supply.

9.- check that there are no gas leaks between the joints

removed;

ATTENTION !!! Perform the leak test using a soap

and water only. The use of naked ames is prohibited.

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8 - MAINTENANCE

Figure 8.3 - positioning the electrodes on the burner

8.5 - Correct positioning of the

ignition and ionising electrodes

For good working order of the appliance, it is indispensable

that the electrodes are positioned correctly (refer to gure

8.3):

- the distance between the ignition electrodes “A” and “B”,

must be between 2.0 and 2.5 mm;

- the distance between the ignition electrodes from the burner

surface must be between 5 and 5.5 mm;

- the distance of the ionisation electrode from the surface of the burner must be between 5.5 and 6.5 mm.

8.6 - Removing the ow meter

The ow meter is used to measure the water ow rate

inside the boiler. If it has to be replaced, proceed as follows

(refer to gure 8.4):

1.- empty the appliance water, following the procedure in

chapter 8.12;

2.- access the internal components of the appliance

following chapter 8.2;

3.- remove the burner unit following chapter 8.3;

4.- loosen the ttings “B” and “C”;

5.- extract the ow meter “A” paying attention to the direction of the ow, as per arrow printed on the ow meter;

6.- replace the ow meter;

7.- during mounting, make sure the ow meter is positioned correctly (step highlighted in point 4).

8.7 - Removing the safety valve

The safety valve (detail “A” in gure 8.5) protects the boiler

from over pressures. If it has to be replaced, proceed as

follows (refer to gure 8.5):

1.- empty the appliance, following the procedure in chapter

8.12;

2.- access the internal components of the appliance

following chapter 8.2;

3.- remove the burner unit following chapter 8.3;

4.- disconnect the drain pipe from the safety valve,

loosening the sealing spring;

5.- unscrew the xing tting of the safety valve to the pipe;

6.- extract the safety valve “A” upwards and replace it by restoring the drain pipe of the same as it was previously mounted.

Figure 8.4 - Removing the ow meter

Figure 8.5 - Removing the safety valve

020005.01.009

020005.01.010

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8.8 - Cleaning the condensate

conveyor siphon

For correct cleaning of the collection siphon and the conveying of the condensate produced by combustion,

operate as follows (refer to the gures 8.6, 8.7 and 8.8):

1.- with the boiler on, force the central heating to maximum, following the procedure in chapter 8.14 in a way that the burner is at maximum power and the level of liquid

present inside the siphon tank “D” (see gure 8.6),

lowers. Now, switch the boiler off and disconnect it

electrically;

2.- access the internal components following chapter 8.2;

3 - remove the fan burner unit following chapter 8.3;

4 - cover the electric plant and pump unit with a cloth

to protect them from any residues of water inside the siphon to be removed.

5.- slide the support “C” outwards from the holding support;

6.- slide the tank “D” downwards, paying attention to the fact that it is full of condensate water and this could

escape;

7.- extract the siphon outwards (see gure 8.7) paying

attention to disconnect the collection pipes of the water coming from the upper part of the appliance and from the air vent valve.

8.- clean the decanting tank “D”;

9.- re-mount everything in reverse order, paying attention to the gasket “E”, which is put back in the relevant seat and

that terminal “G” is introduced correctly in the seat “H”;

10.- restore the level of liquid inside the siphon following the procedure in chapter 6.1.2.

Figure 8.7 - Removal of the condensate collection siphon

020002.01.027

02002.01.029

Figure 8.8 - Condensate collection siphon

020002.01.030

8 - MAINTENANCE

Figure 8.6 - Removal of the condensate collection siphon

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8.9 - Removing the air vent valve

Refer to Figure 8.9 and proceed as follows:

1.- close the plant load cock envisioned by the installer;

2. - take plant pressure to zero;

3.- access the internal components of the appliance

following chapter 8.2;

4.- unscrew and slide the air vent valve “A” upwards and

replace;

Figure 8.10 - Replacing the pump motor

8 - MAINTENANCE

Figure 8.9 - Removing the air vent valve

Figure 8.11 - Removing the central heating circuit pressure sensor

8.11 - Removing the central

heating circuit pressure sensor

Proceed as follows, making reference to gure 8.11:

1.- empty the central heating circuit, following the procedure

in chapter 8.12;

2.- access the internal components of the appliance

following chapter 8.2;

3.- disconnect the connection cable from sensor “A”;

4.- extract the drive bar “B” as indicated in the gure;

5.- slide out and extract the pressure sensor “A” from the

tting “C”, as indicated in the gure.

6.- replace the sensor, restoring the connections as previously.

8.10 - Replacing the pump motor

If the circulation pump must be replaced, operate as follows

(refer to gure 8.10)

1.- empty the central heating circuit, following the procedure

in chapter 8.12;

2.- access the internal components of the appliance

following chapter 8.2;

3.- disconnect the pump electric power supply cable;

4.- loosen the screws “B”;

5.- extract the pump “A” outwards;

6.- replace it, paying attention to the correct positioning of the internal gasket and re-connect the power supply cable.

020005.01.011

020005.01.012

020005.01.013

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8.12 - Emptying the appliance

Proceed as follows to empty the appliance:

1.- generate a central heating request;

2.- set the central heating temperature at the lowest value possible, with the purpose of cooling the water inside the

boiler;

3.- switch the boiler off;

4.- close the plant load cock envisioned by the installer;

5.- connect a exible hose to the drain cocks envisioned by

the installer and convey it onto the drain of a washbasin

or similar;

6.- open the drain cocks envisioned by the installer;

7.- open the central heating elements bleed valves. Start from the highest central heating elements and continue with the lowest

8.- once all of the water has been evacuated, close all of the heating element vent valves and the drain cocks envisioned by the installer.

ATTENTION !!! It is prohibited to recover and/

or re-use the water evacuated from the central heating circuit for any purpose; this could be polluted.

8.13 - Fan

Switch-on of the fan only can be generated, accessing the parameter 2010 situated inside the “Installer menu” (see chapter 7.18) and set it on FAn. To go back to normal operating conditions, set parameter 2010 again to 0FF.

8.14 - Minimum and maximum power

Appliance operation can be forced to its own minimum, maximum, adjusted or ignition power. Proceed as follows:

1.- make sure that any cocks and thermostatic valves

downstream from the central heating circuit are open;

ATTENTION !!! During forcing of the delivery

2.- access parameter 2010 found in the “installer menu”

(see chapter 7.18);

3.- set the parameter 2010 at the following value:

a) LOu to force the boiler to minimum power; b) Ign to force the boiler to ignition power; c) HIgH to force the boiler to maximum power; d) rEg to force the boiler to the maximum central heating

power, as adjusted (Range Rated) in chapter 6.9,

parameter 2002.

4.- To end forcing, take the parameter 2010 to the 0FF

value and press the RESET key.

ATTENTION !!! If during forcing, the power

supplied by the boiler is much higher than the power absorbed by the plant, the boiler switches off continuously to reach the maximum temperature allowed (93°C).

8 - MAINTENANCE

Page 59

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COSMOGAS

8.15 - Checking the ionisation current

In any operating status, also during verications of minimum

and maximum power stated in chapter 8.14, the ionisation current value can be consulted on parameter 1008 present

in the “User menu” (chapter 7.17). This value must be between

1.5 and 3 uA (microampere) at minimum power and between

5 and 8 uA at maximum power.

8.16 - Checking combustion performance

On the basis of national laws regarding gas appliances, the

combustion performance must be checked periodically;

To do this, operate exactly as stated in chapter 6.8 and also

check, in addition to CO2, the combustion efciency, which

must be over 96%.

Figure 8.12 - Water sensors curve

Figure 8.13 - External temperature sensor curve

8 - MAINTENANCE

8.17 - Water temperature measurement sensors

The temperature sensors are positioned on the boiler’s exchanger body. The electric resistance existing between the two contacts of the sensor, must correspond with that

stated in gure 8.12.

The temperature sensors are: 1001, 1002, 1005,

1006, 1007 and 1014, the positioning of which can

be veried in gure 3.1.

8.18 - External temperature sensor

On request, the external temperature sensor can be connected to the boiler 1004 (see chapter 5.14.4). The

electric resistance existing between the two contacts of the

sensor, must correspond with that stated in gure 8.13.

Page 60

MYDENS 60

COSMOGAS

8.19 - Operational wiring diagram

Figure 8.14 - Operational wiring diagram

ATTENTION !!! To consult

the wiring diagram correctly, references K are given followed by a number (see example above) to identify the correct follow-on of the cables in the next page.

8 - MAINTENANCE

1001 - Boiler body sensor 1

1002 (SB) - Indirect water heater sensor

1004 - External temperature sensor 1005 - Boiler body sensor 2 1006 - Fumes sensor 1007 - Return sensor 1014 - Fumes safety sensor

CM - Boiler control unit and ame control

DSP - Display EA - Ignition electrode ER - Detection electrode

F (PWM) - Fan F (BCU) - 5A fuse

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MYDENS 60

COSMOGAS

8 - MAINTENANCE

F1 (SDC) - 1,6A power supply fuse

GP - Circulation pump GS - Spark generator IG - Master switch J1 - 6 pin Molex connector J12- 6 pin Molex connector J2 - 4 pin Molex connector J26- 4 pin Molex connector J3 - 12 pin Molex connector J4 - 4 pin Stelvio connector J5 - 16 pin Molex connector J6 - 14 pin Molex connector J7- 10 pin Molex connector

J9- 4 pin Molex connector PB - Indirect Water Heater pump PS - Central heating circuit pressure sensor SDC- Connection board TA- Room thermostat

TU - Flow meter (water ow rate measuring device)

VG1- Gas Valve

Page 62

MYDENS 60

COSMOGAS

8.20 - Multi-wire wiring diagram

Figure 8.15 - Multi-wire wiring diagram

Key - see key gure 8.14

8 - MAINTENANCE

Page 63

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COSMOGAS

8 - MAINTENANCE

Page 64

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COSMOGAS

TECHNICAL DATA MU MYDENS 60A MYDENS 60C

Type (Type of fumes exhaust/air intake) B23 ; C13 ; C33 ; C43 ; C53 ; C63 ; C83

Category II2H3P II2H3P

CE type certicate (PIN) 0694CN6126 0694CN6126

Central heating max. heat input “Q” kW 57,8 57,8

Domestic hot water max. heat input kW N.A. N.A.

Central heating min. heat input kW 12,0 12,0

Domestic hot water minimum heat input kW N.A. N.A.

Central heating max. useful heat output (80/60) “P” kW 56,1 56,1

Efciency at 100% load (80/60) % 97,1 97,1

Min. useful heat output (80/60) kW 11,6 11,6

Efciency at min. useful heat output (80/60) % 97 97

Central heating max. useful heat output (50/30) kW 60,7 60,7

Efciency at central heating max. useful heat output (50/30) % 105 105

Min. useful heat output (50/30) kW 12,8 12,8

Efciency at min. useful heat output (50/30) % 107 107

Central heating max. useful heat output (40/30) kW 61,9 61,9

Efciency at central heating max. useful heat output (40/30) % 107 107

Min. useful heat output (40/30) kW 12,8 12,8

Efciency at min. useful heat output (40/30) % 107 107

Efciency at 30% of the load % 107 107

Efciency certicate (92/42/EEC) stelle

Losses at the chimney burner on (80/60) % 1 1

Losses at the chimney burner on at minimum power % 0,5 0,5

Losses at the chimney burner off % 0,1 0,1

Losses at the casing burner on % 0,1 0,1

Losses at the casing burner off % 0,05 0,05

Losses at zero load % 0,05 0,05

Generator average test temperature (80/60) °C 70 70

Generator average test temperature (40/30) °C 35 35

Return temperature in test conditions (80/60) °C 60 60

Return temperature in test conditions (40/30) °C 30 30

Gas ow rate

Nat GAS m

/h 6,1 6,1

LP GAS Kg/h 4,5 4,5

Gas supply pressure

Nat GAS mbar 20 20

LP GAS mbar 37 37

Gas supply minimum pressure

Nat GAS mbar 15 15

LP GAS mbar 25 25

Gas supply maximum pressure

Nat GAS mbar 30 30

LP GAS mbar 45 45

Combustion agent air pressure

Nat GAS mbar 5 5

LP GAS mbar 4 4

Primary heat exchanger water content lt 3,2 3,2

Weight of the primary heat exchanger kg 18,2 18,2

Secondary heat exchanger water content lt N.A. N.A.

Domestic hot water useful heat output kW N.A. N.A.

D.H.W. minimum ow rate l/min N.A. N.A.

Instantaneous D.H.W. production (dt 30°C) l/min N.A. N.A.

Instantaneous D.H.W. adjustment range °C N.A. N.A.

D.H.W. with Indirect Water Heater adjustment range °C 40 - 70 40 - 70

Design temperature °C 95 95

Maximum central heating temperature °C 80 80

Minimum central heating temperature °C 20 20

9 - TECHNICAL DATA

Page 65

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COSMOGAS

DATI TECNICI MU MYDENS 60A MYDENS 60C

Central heating maximum pressure “PMS” = bar 4 4

Central heating minimum pressure bar 0,5 0,5

D.H.W. circuit maximum pressure bar N.A. N.A.

D.H.W. minimum pressure bar N.A. N.A.

Expansion tank pre-load pressure bar N.A. N.A.

Expansion tank capacity lt N.A. N.A.

Rated power supply voltage V 230 230

Rated power supply frequency Hz 50 50

Absorbed electric power W 140 305

Electric protection rating IPX4D IPX4D

Elec. pow. of the generator aux. positioned before rebox W 140 140

Elec. pow. of the generator aux. at min.pow. positioned before rebox W 40 40

Elec. pow. of the generator aux. positioned after rebox W 0 165

Elec. pow. of the generator aux. at min.pow. positioned after rebox W 0 165

Power absorbed by the auxiliaries at rated power W 0 165

Power absorbed by the auxiliaries at intermediate load W 0 165

Power absorbed by the auxiliaries at zero load W 0 0

Electric power absorbed by the pump W 0 165

Fumes pipe diameter (split) mm 80 80

Fumes pipe max. length (split) (80) m 10 10

Fumes pipe max. length (split) (60) m N.A. N.A.

Fumes pipe diameter (coaxial) (80/125) mm 80/125 80/125

Fumes pipe max. length (coaxial) (80/125) m 10 10

Equivalent length of a bend m 1 1

Weighted CO (0% O2 with natural gas) ppm 15 15

Weighted NOx (0% O2 with natural gas) (class 5 EN 483 and 297) ppm 15 15

CO2 (%) at natural gas minimum/maximum power Metano % 8,5 / 9,0 8,5 / 9,0

CO2 (%) at LP gas minimum/maximum power GPL % 10,0 / 10,5 10,0 / 10,5

O2 (%) at natural gas minimum/maximum power Metano % 5,8 / 4,9 5,8 / 4,9

O2 (%) at LP gas minimum/maximum power GPL % 5,6 / 4,8 5,6 / 4,8

Maximum recirculation of fumes allowed in the event of wind % 10 10

Fumes maximum temperature at boiler outlet °C 90 90

Fumes minimum temperature at boiler outlet °C 30 30

Mass ow of the fumes kg/h 99 99

Head available at exhaust kg/h 20 20

Mass ow of the fumes at minimum power Pa 60 60

Maximum temperature of the combustion agent air °C 50 50

Maximum CO2 content in the combustion agent air % 0,9 0,9

Fumes maximum temperature for overheating °C 95 95

Max. negative pressure allowed in the fumes exhaust/intake system Pa 60 60

Condensate maximum ow rate l/h 7,2 7,2

Condensate average acidity PH 4 4

Operating environment temperature °C 0 ; + 50 0 ; + 50

Weight of the boiler kg 44 46

9 - TECHNICAL DATA

Page 66

MYDENS 60

COSMOGAS

10 - COMMAND MENU DIAGRAM

Symbol Description

Press and release the RESET key

Hold the reset key down for a time in seconds, indicated by the number (2)

Hold the reset key down for a time in seconds, indicated by the number (5)

Hold down the RESET and key simultaneously for a time in seconds, indicated by the number

Press and release the key

Parameters that can be displayed in the normal operational conditions

(see chapter 7.19)

User menu parameters (see

chapter 7.17)

Installer menu parameters (see

chapter 7.18)

Installer menu parameters (see

chapter 7.18)

User menu access

(see chapter 7.17)

Installer menu access

(see chapter 7.18)

Return to normal operation

Figure 10.1 - Command menu diagram

Key of gure 10.1

Page 67

MYDENS 60

COSMOGAS

ATTENTION !!!

The modication of these parameters could cause the appliance, and therefore the plant, to malfunction.

For this reason only a technician that has the awareness and in-depth knowledge of the appliances can modify them.

To access this menu:

1.- Remove voltage to the appliance;

2.- Access the internal components as per chapter 8.2;

3.- Move the microswitch “A” in gure 6.5 to “ON” position;

4.- Apply voltage to the boiler;

5.- Parameter 3002 will be displayed;

6.- Navigate the menu using the

and keys. Once the parameter has been selected, press the RESET key

to make it modiable using the

and keys;

7.- Press the RESET key to save the modications;

8.- Remove voltage and move the microswitch “A” in gure 6.5 to “OFF” to go back to normal operating conditions.

11 - MENU FORCED BY INTERNAL ELECTRIC BRIDGE

Parameter Description of the parameter M.U. Setting range

Factory value

Customised values

3002 Selection type From 50 to 55 See gure 6.7

3012

Domestic hot water operating mode

0 = No domestic hot water; 1 = Indirect Water Heater with temperature sensor; 2 = Indirect Water Heater with thermostat;

3 = Instantaneous with ow switch;

4 = Microaccumulation with two sensors; 5 = Instantaneous with turbine;

model “P” = 5 model “B” = 1 model “C” = 0 model “A” = 0

3013 Plant load automatic valve /

0 = Valve disabled; 2 = Valve enabled;

3014

Instantaneous domestic hot water pre-heat

OFF = No pre-heat ON = with pre-heat

OFF

3015

Maximum central heating temperature

°C From 20 up to 90 80

3016

Minimum central heating temperature

°C From 20 up to 90 30

3020

Domestic hot water ow rate

sensor

0 = B; 1 = DN 8; 2 = DN 10; 3 = DN 15; 4 = DN 20; (MYDENS 60) 5 = DN 25;

3021 2nd Fumes sensor (1014) /

0 = Disabled; 1 = Enabled; 2 = Enabled with fumes exhaust anticlosure pressure switch;

3022

Central heating minimum pressure

bar OFF... 0,3 to 5,1; 0,5

3033

Modulating pump

0 = Disabled; 1 = Enabled;

2 = 20% x to 10 = 100% x;

3034

Modulating pump delta T target

°C From 5 to 40 15

3035

No function

/ / /

3036

No function

/ / /

3052

No function

/ / /

Page 68

MYDENS 60

COSMOGAS

The undersigned COSMOGAS S.r.L., with Registered Ofce in via L. Da

Vincin° 16 - 47014 Meldola (FC) ITALY,

DECLARES

under its own responsibility that the product:

subject of this declaration, is in compliance with the model described in the

Type examination certicate, whose reference is given in the table in

chapter 9 under “CE type certicate (PIN)” and meeting that required by the

Directives: Gas Appliances, (2009/142/CE former 90/396/CEE), Efciency,

(92/42/CEE), Low Voltage, (2006/95/CE), Electromagnetic Compatibility,

(2004/108/CEE).

(the warranty number corresponds to the serial number)

This declaration is issued for that established by the above-mentioned Directives.

Meldola (FC) ITALY, (Date of manufacture).

MANUFACTURE

WARRANTY N°

MODEL

12 - CE DECLARATION OF CONFORMITY

________________________

Alessandrini Arturo

General Menager

Page 69

MYDENS 60

COSMOGAS

HYDRAULIC TEST CERTIFICATE

Under the Ministerial Decree December 1st, 1975 art. 17, the company COSMOGAS srl

manufacturer of base and wall mounted boilers using gaseous fuels,

CERTIFIED

that this heat generator:

Refer to the identication data of the product

(WARRANTY N°, MODEL and MANUFACTURE)

listed in the CE declaration of conformity

was subjected to the hydraulic test of 6 bar with positive outcome.

Operating on gaseous fuel type**:

G20  G25  G30  G31 

** (To be completed by the installer once found the type of gas appliance operating)

Thermal power refers to the PCI (heat input “Q”): 57,8 kW

Useful heat

“P”: 56,1 kW

Maximum pressure operating: 4 Bar

Test pressure: 6 Bar

Set pressure of the safety valve: 3,5 Bar

________________________

Alessandrini Arturo

General Menager

13 - HYDRAULIC TEST CERTIFICATE

Page 70

MYDENS 60

COSMOGAS

14 - WARRANTY

14.1 - General warranty conditions

All COSMOGAS products are guaranteed against material

aws and manufacturing defects for 24 months from the date of commissioning, COSMOGAS also extends the warranty to :

COPPER TUBE, CRR and CRV HEAT EXCHANGER guaranteed up to 5 years;

PRE-MIXED BURNERS guaranteed up to 10 years;

ATMOSPHERIC BURNER guaranteed up to 15 years.

This warranty extension will only be valid if COSMOGAS

ahas received the warranty card, lled-in completely,

which will certify the date of commissioning. Within the above-mentioned term COSMOGAS commits to repairing or replacing the faulty construction parts and which will be acknowledged as such with exclusion of normal deterioration due to operations. The extension of the warranty exclusively covers the cost of the spare part. All other accessory costs are excluded, such as: labour, transfer costs and expenses for transporting material. The warranty does not extend to the recasting of the damage, of any nature, that has happened to persons or property. The faulty material replaced under warranty is the property of COSMOGAS and must be returned to our establishment, without further damage, within 30 days from replacement. All COSMOGAS products are encumbered by the title retention agreement, until the appliance sold have been paid in full.

14.2 - Instructions for lling-

in the warranty card

1. - Have your installer put his stamp on the warranty

certicate.

2. - Always request the intervention of our authorised technician for commissioning and to validate the

warranty;

To validate the warranty it will be the technician perform all the controls of the appliance in accordance with instructions contained in this manual and the regulations in force national and / or local.

The list of authorised technicians is found attached to the instruction manual or can be found in the Yellow Pages under “Gas boiler”.

 The technician will take the warranty certicate and

deliver it to COSMOGAS.

14.3 - Limits of the warranty

The warranty is not valid:

- if the appliance is installed by not-qualied staff;

- if the appliance is installed in a way that is not in compliance with the COSMOGAS instructions and/or that

established by the current national and/local regulations;

- whenever the plant is not run/services in compliance with the instructions and/or the current national and local

regulations;

- whenever the product has damage caused by changes in

voltage;

- whenever the product has damaged caused by the use of excessively hard water, or which is too acid or too

oxygenated;

- whenever the product has failures caused by heat shocks,

abnormalities of chimneys and/or exhaust and intake pipes;

- whenever the product has anomalies not depending on

COSMOGAS;

- whenever the appliances have been tampered with for adaptation, repairs or replacement with non-original spare

parts;

- whenever repairs are performed by unauthorised staff.

- Whenever the warranty certicate is not sent

to COSMOGAS within 15 days from the date of commisioning.

COSMOGAS does not assume any responsibility for

any accident that may occur or be caused by the user, precluding any compensation that does not concern boiler parts recognised as defective manufacturing. Any dispute is the jurisdiction of the Forlì Law Court, ITALY.

Page 71

Page 72

COSMOGAS s.r.l.

Via L. da Vinci 16 - 47014

MELDOLA (FC) ITALY

info@cosmogas.com

www.cosmogas.com

COSMOGAS MYDENS 60 Installation, Use And Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual