COSMOGAS AGUADENS Series Installation, Operating And Maintenance Manual

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62403690 - R00 03-10-2016_HU

INSTALLATION, OPERATING AND MAINTENANCE MANUAL

AGUADENS

WALL-MOUNTED GAS CONDENSING WATER HEATERS

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AGUADENS

COSMOGAS

INDEX

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

1.1 - National laws and regulations .................................................................................................................................. 5

2 - GENERAL INFORMATION .............................................................................................................................6

2.1 - Presentation ............................................................................................................................................................. 6

2.2 - Model overview ........................................................................................................................................................ 6

2.3 - Manufacturer ............................................................................................................................................................ 7

2.4 - Symbols key ............................................................................................................................................................. 7

2.5 - Maintenance ............................................................................................................................................................. 7

3 - MAIN COMPONENTS .....................................................................................................................................8

4 - OPERATION .................................................................................................................................................12

4.1 - Operation and intended use of the appliance ........................................................................................................ 13

4.2 - Examples of installation ......................................................................................................................................... 14

5 - INSTALLATION .............................................................................................................................................16

5.1 - Opening the packaging .......................................................................................................................................... 16

5.2 - Dimensions and minimum safety clearances ......................................................................................................... 16

5.3 - Choosing suitable installation location ................................................................................................................... 16

5.4 - Mounting the appliance .......................................................................................................................................... 16

5.5 - Domestic hot and cold water .................................................................................................................................. 16

5.6 - Gas ......................................................................................................................................................................... 17

5.7 - Condensate drain ................................................................................................................................................... 18

5.8 - Safety valve ............................................................................................................................................................ 18

5.9 - Hydraulic and gas connections .............................................................................................................................. 19

5.10 - Water softener (on request) ................................................................................................................................. 19

5.11 - Electrical connections ........................................................................................................................................... 20

5.11.1 - Power supply cable connection ............................................................................................................... 21

5.11.2 - CR04 remote Time control (on request) .................................................................................................. 21

5.12 - External secondary return conguration ......................................................................22

5.13 - Connection water heater to Storage tank ............................................................................................................. 23

5.13.1 - Anti- legionella precaution ....................................................................................................................... 23

5.14 - Flue systems ........................................................................................................................................................ 25

5.14.1 - Exhaust ue with indipendent combustion air grille type B23 ................................................................. 26

5.14.2 - “Split 80/80PP” System (polypropylene) (Type C43; C53; C83) AGUADENS 16 and 22 ....................... 27

5.14.3 - “Split 80/80PP” System (polypropylene) (Type C43; C53; C83) AGUADENS 37 ................................... 28

5.14.4 - “Split 80/80PP” System (Type C43; C53; C83): accessories available ................................................... 29

5.14.5 - “Split 80/80PP” System (Type C43; C53; C83): installation examples ................................................... 30

5.14.6 - “60/100PP vertical coaxial” System (polypropylene) (C13; C33 Type) ................................................... 31

5.14.7 - “60/100PP horizontal coaxial” System (polypropylene) (C13; C33 Type) ............................................... 32

5.14.8 - “60/100PP Coaxial” System: accessories available ................................................................................ 33

5.14.9 - “60/100PP Coaxial” System: installation examples ................................................................................ 34

5.14.10 - “80/125PP vertical coaxial” System (polypropylene) (C13; C33) .......................................................... 35

5.14.11 - “80/125PP Coaxial” System: accessories available .............................................................................. 36

5.14.12 - “80/125PP Coaxial” System: installation examples .............................................................................. 37

6 - OPERATING .................................................................................................................................................38

6.1 - Operating ............................................................................................................................................................... 38

6.1.1 - User instructions ....................................................................................................................................... 38

6.1.2 - Filling the condensate drain siphon .......................................................................................................... 38

6.2 - General recommendations regarding the supply of gas ........................................................................................ 38

6.3 - Type of gas for which the appliance is regulated. .................................................................................................. 39

6.4 - Conversion of the appliance from one type of gas to another ................................................................................ 39

6.5 - Ignition .................................................................................................................................................................... 41

6.6 - Check the gas supply pressure .............................................................................................................................. 41

6.7 - Measurement and adjustment of CO2 levels ......................................................................................................... 42

6.8 - Self-learning and calibration of the minimum and maximum capacity output ........................................................ 43

6.9 - Adjust the domestic hot water ow rate .................................................................................................................. 43

6.10 - Check the capacity input ...................................................................................................................................... 43

7 - USE ...............................................................................................................................................................44

7.1 - Display ................................................................................................................................................................... 44

7.2 - Ignition procedure .................................................................................................................................................. 44

7.3 - “User menu” ........................................................................................................................................................... 45

7.4 - Adjustment of the domestic hot water temperature ................................................................................................ 45

7.5 - Timings of the various functions ............................................................................................................................. 45

7.6 - Display Energy Saving mode ................................................................................................................................. 45

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INDEX

7.7 - “User menu” Parameters ........................................................................................................................................ 46

7.8 - “Installer menu” & parameters ................................................................................................................................ 47

7.9 - Diagnostics ............................................................................................................................................................. 48

7.9.1 - Diagnostics “Loc” block fault codes and potential solution ....................................................................... 49

7.9.2 - Diagnostics “E” error fault codes and potential solutions .......................................................................... 51

7.10 - Switch ON and OFF the appliance ....................................................................................................................... 52

8 - MAINTENANCE ............................................................................................................................................53

8.1 - Care and maintenance ........................................................................................................................................... 53

8.1.1 - Service recall ............................................................................................................................................ 53

8.1.2 - Address reported problems ....................................................................................................................... 53

8.1.3 - Check all piping for gas leaks ................................................................................................................... 53

8.1.4 - Verify ue and air lines in good condition and sealed tight; ...................................................................... 53

8.1.5 - Check system water pressure/system piping/expansion tank; ................................................................. 53

8.1.6 - Check control settings ............................................................................................................................... 53

8.1.7 - Check wiring and connections .................................................................................................................. 54

8.2 - Casing removal ...................................................................................................................................................... 54

8.3 - Burner and fan removal .......................................................................................................................................... 55

8.3.1 - Thermal insulations ................................................................................................................................... 55

8.4 - Gas burner and heat exchanger outer surface cleaning procedure ....................................................................... 55

8.5 - Condensate siphon cleaning procedure ................................................................................................................. 57

8.6 - Ignition and ame isonising electrode position ....................................................................................................... 58

8.7 - Circulation pump replacement procedure .............................................................................................................. 58

8.8 - Domestic water ow meter replacement procedure ............................................................................................... 59

8.9 - Safety valve replacement procedure ...................................................................................................................... 59

8.10 - Procedure for draining the water heater ............................................................................................................... 60

8.11 - Fan test mode procedure ..................................................................................................................................... 60

8.12 - Gas burner minimum and maximum performance test mode procedure ............................................................. 60

8.13 - Checking the ionisation current ............................................................................................................................ 61

8.14 - Water temperature measurement sensor testing procedures .............................................................................. 61

8.15 - Operational wiring diagram .................................................................................................................................. 62

8.16 - Multi-wire wiring diagram ..................................................................................................................................... 64

9 - TECHNICAL DATA ........................................................................................................................................66

10 - COMMAND MENU DIAGRAM ....................................................................................................................67

11 - ENGINEERS TEST MODE..........................................................................................................................68

12 - CE DECLARATION OF CONFORMITY ......................................................................................................69

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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 wells as the instructions 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 must be connected to an approved ue

system. Failure to comply with this regulation can lead to serious risks for people and animals

A domestic hot water temperature level exceeding 51°C

can cause permanent injury/damage to people, animals and objects. Special care should be taken to protect children, the elderly and those with special needs using non-accessible

blending valves to limit the ow hot water temperature at

outlets.

The water heater ue system must not be modied by

unqualied person.

The ue system terminals should not be obstructed in any

way.

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.

We also highlight the importance of an annual scheduled

maintenance contract with a professionally qualified technician.

The end user must have maintenance performed on the

appliance only by professionally qualied technicians in

accordance with this manual and in full compliance with both local and national standards.

Before performing any cleaning or maintenance, disconnect

the appliance from the mains power supply.

After having performed any cleaning or maintenance works,

make sure that all internal etc.

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 accessories or kits which might be added must be

original Cosmogas products.

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

it has been expressly declared: production of domestic hot water for civilian 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 and do not attempt any repairs. Contact a

professionally qualied technician only. If components must

be replaced for repair to be successful, 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 technicians with certied training

covering gas boilers and/or gas water heaters as envisioned by the law.

Technical drawings

All drawings in this manual relating to electrical wiring, hydraulic and gas layouts are purely indicative. The external services such as electrical cable types and sizes, water services pipes and gas services must always be checked

by a professionally qualied technician or engineer to verify

compliance with all relevant standards, Laws and codes of good practice.

Carbon Monoxide. Every year deaths and serious injuries occur due to carbon monoxide poisoning. This tragedies are avoidable if certain preventative measures such as the following are undertaken:

Ensure that all boilers, water heaters, room heaters, stoves

and hobs which burn oil, natural gas, LP gas, coal, peat, wood and wood pallets are serviced regularly. Servicing is needed at least once per year to ensure safety. the

service person should be qualied and trained to service the specic types of appliance

If an appliance is fitted in a dwelling, then a carbon

monoxide detector should always be tted. There are two types avaiable: a simple detector works like a re alarm to emit a loud noise and ashing light if carbon monoxide is

detected or a more sophisticated version which will also switch off the appliance to provide more safety.

1 - GENERAL SAFETY RECOMMENDATIONS

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1 - GENERAL SAFETY RECOMMENDATIONS

1.1 - National laws and regulations

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

- Law n°10 dated 09/01/91

- Presidential Decree n°412 dated 26/08/93

- Presidential Decree n°551 dated 21/12/99

- Legislative Decree n° 192 dated 19/08/05

- Legislative Decree n° 311 dated 29.12.06

- UNI 7129 Standard

- UNI 7131 Standard

- UNI 11071 Standard

- IEC 64-8 Standard

All the gas appliances must be installed by a competent

and qualied person, in accordance with relevant clauses of

applicable standards and raccomandations. These include but may not be limited to the following:

- I.S. 813 Domestic gas installations.

- I.S. 820 Non-Domestic gas installations.

- IEE Wiring Regulations.

- BS 5546:2010 - Specication for installation and maintenance

of gas-fired water-heating appliances of rated input not exceeding 70 kW net.

- BS 5440-2:2009 - Flueing and ventilation for gas appliances

of rated input not exceeding 70 kW net (1st, 2nd and 3rd family

gases) specication for the installation and maintenance of

ventilation provision for gas appliances.

- BS 6644:2011 - Specification for the installation and

maintenance of gas-red hot water boilers of rated inputs

between 70 kW (net) and 1.8 MW (net) (2nd and 3rd family gases).

- BS 6891:2005+A2:2008 - Installation of low pressure gas

pipework of up to 35 mm (R1 1/4) in domestic premises (2nd

family gas) specication.

- BS 5482-1:2005 - Code of practice for domestic butane and

propane gas burning installations. Installations at permanent dwellings, residential park homes and commercial premises, with installation pipework sizes not exceeding DN 25 for steel and DN 28 for corrugate stianless steel or copper.

- BS 5482-2:AMD 12046: June 2001 - Domestic butane and

propane gas burning installations. Installations in caravans and non-permanent dwellings.

- BS 5482-3:2005 - Domestic butane and propane gas burning

installations. Installations in boats yachts and other vessels.

- Building regulations issued by Department of the Environment

and Building Standards Regulations.

- Gas safety (Installation and Use) Regulations current issue.

- BS 6700 - Design, installation, testing and maintenance of

services supplying water for domestic use within buildings

and their cartilages - Specication.

- UK Health and safety at work Act.

- All relevant Building Regulations.

- Local Water Bye Laws.

- Water Regulations.

- Health & Safety legislation.

Failure to install this appliance correctly could lead to prosecution. It is your own interest and that of safety to ensure that the law is complied with. Manufacturer’s instructions must not be interpreted as over-riding statutory obligations under any circumstances.

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2 - GENERAL INFORMATION

2.1 - Presentation

Congratulations! You have purchased one of the best products on the market. Each individual part is proudly designed, produced, tested and assembled within the COSMOGAS establishment, thus guaranteeing the best quality control.

AGUADENS XX

16 = Water heater with maximum heat input of 25,5 kW 22 = Water heater with maximum heat input of 32,0 kW 37 = Water heater with maximum heat input of 57,8 kW

Condensing, indoor, pre-mixed, ecological gas water heater.

2.2 - Model overview

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COSMOGAS

2.3 - Manufacturer

COSMOGAS srl Via L. da Vinci 16 47014 - Meldola (FC) Italia Tel. 0543 498383 Fax. 0543 498393 www.cosmogas.com [email protected]

2.4 - Symbols key

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 - GENERAL INFORMATION

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1 - Command and control board 2 - Electric connections board 3 - Electric control board box 4 - Lower cover 5 - ----------

6 - Water ow rate measuring device

7 - Cold water inlet temperature sensor (1007) 8 - Fan 9 - ---------10 - ----------

11 - Double D.H.W. output sensor (1001 and 1005) 12 - ---------13 - ---------14 - Pump 15 - Detection electrode

16 - Wall xing brackets

17 - ---------18 - ----------

19 - Combustion air and exhaust ue connection

20 - Combustion analysis points 21 - Exhaust ue temperature sensor (1006)

22 - Spark generator 23 - Ignition cables 24 - Combustion gases non-return valve. 25 - Air inlet manifold 26 - Gas valve 27 - Front casing 28 - Safety valve 29 - Display 30 - Control board 31 - Gas valve adjustment service access hatch

3 - MAIN COMPONENTS

Figure 3-1 - Water heater internal components

020003.01.057

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32 - ----------

33 - Front casing xing tabs

34 - ---------35 - Ignition electrodes 36 - Gas burner viewing port 37 - Flue condensate collection collar drain pipe (connected to siphon)

38 - Burner

39 - Air/gas mixing unit 40 - Condensate drain siphon 41 - Safety valve drain pipe 42 - ---------43 - Condensate collection tank 44 - ---------45 - Flue gas temperature protection fuse

46 - Temperature sensor D.H.W. (1002)

3 - MAIN COMPONENTS

Figure 3-2 - Water heater internal components

020003.01.058

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1 - Command and control board 2 - Electric connections board 3 - Electric control board box 4 - ---------5 - ----------

6 - Water ow rate measuring device

7 - Cold water inlet temperature sensor (1007) 8 - Fan 9 - ---------10 - ----------

11 - Double D.H.W. output sensor (1001 and 1005) 12 - ---------13 - ---------14 - Pump 15 - Detection electrode

16 - Wall xing brackets

17 - ---------18 - ----------

19 - Combustion air and exhaust ue connection

20 - ---------21 - Exhaust ue temperature sensor (1006)

3 - MAIN COMPONENTS

Figure 3-3 - Water heater internal components

3130

020008.01.019

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32 - ----------

33 - Front casing xing tabs

34 - ---------35 - Ignition electrodes 36 - Gas burner viewing port 37 - Flue condensate collection collar drain pipe (connected to siphon)

38 - Burner

39 - Air/gas mixing unit 40 - Condensate drain siphon 41 - Safety valve drain pipe 42 - ---------43 - Condensate collection tank 44 - ----------

45 - High limit ue gas temperature fuse

46 - D.H.W. temperature sensor (1002) 47 - Air purge valve

3 - MAIN COMPONENTS

Figure 3-4 - Water heater internal components

020008.01.020

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Key to gure 4-1:

1 = Water heater 2 = Combustion air intake

3 = Exhaust ue 4 = Exhaust ue temperature sensor (Par. 1006)

5 = High limit ue gas temperature fuse

6 = Sealed chamber 7 = Water collection tub

8 = Heat exchanger outlet temperature sensor 1 (Par. 1001) 9 = Heat exchanger outlet temperature sensor 2 (Par. 1005)

10 = Burner

11 = Heat exchanger 12 = Fan

13 = Cold water temperature sensor (Par. 1007) 14 = Condensate collection siphon 15 = Air/gas mixer 16 = Gas valve 17 = Safety valve 18 = ---------19 = Pump 20 = Non-return valve

21 = Water ow meter

22 = ---------23 = Cap 25 = Manual gas valve (optional) 26 = Gas inlet 27 = Cold water inlet 28 = Safety valve condensate drain funnel 29 = Hot water outlet

30 = Hot water sensor (Par. 1002)

4 - OPERATION

Figure 4-1 - Hydraulic layout

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4 - OPERATION

4.1 - Operation and intended use of the appliance

This product is a condensing gas appliance, intended for the production of domestic hot water for use by people. Consider the D.H.W. circulation pump performance curves

as illustrated in gure 4-2.

The temperature of the domestic hot water can be adjusted by following the relevant procedure in section 7.4.

This appliance must be connected to a domestic hot

water distribution system which has adequately sized pipes to convey the correct water volume and all pipes

should be tted with good quality insulation to optimise

the performance of the water heater.

Before installation of the domestic cold and hot water

services should be ushed thoroughly in order to remove

any residues or impurities which could compromise the good working order of the appliance.

This appliance is not suitable for installation outdoors.

It must not be exposed to temperature below zero or temperature above 50°C. Select a suitable sheltered location for the appliance.

This appliance must be installed in a location which will

not cause damage to objects or property in the event of water leaking from within the appliance or connections at the appliance.

Check gure 5-1 concerning the minimum safety

distances for installation and future maintenance.

Figure 4-2 - Curve of the domestic water circuit losses

Head losses (bar)

Water ow rate (l/min)

Key to gure 4-2

A = Aguadens 16

B = Aguadens 22

C = Aguadens 37

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4 - OPERATION

4.2 - Examples of installation

In gures 4-3, 4-4, 4-5, 4-6, 4-7 and 4-8 you can see some examples of correct installation while in gure 4-9 you can

see one example of wrong installation.

Figure 4-3 - Example of basic installation

Figure 4-5 - Example of installation with storage tank (see section 5.13)

Figure 4-4 - Example of installation with secondary return performed by an external pump (see section 5.12)

Figure 4-6 - Example of installation with storage tank (see section 5.13)

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4 - OPERATION

Figure 4-7 - Example of installation with solar panel and storage tank (see section 5.13)

Figure 4-8 - Example of installation with solar panel (maximum inlet temperature to the water heater is 85°C).

Figure 4-9 - Example of wrong installation

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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 clearances

It is necessary to leave free spaces around the appliance as

illustrated in gure 5-1 both for installation and maintenance.

5.3 - Choosing suitable

installation location

ATTENTION !!! The appliance must be installed

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

The appliance must be installed in a suitable room taking into account the following factors:

- connection of the exhaust/air intake pipes;

- connection of the gas supply pipe;

- connection to the cold water supply;

- connection of the domestic hot water supply;

- electrical connection;

- connection of the siphon and safety valve to a suitable

drain;

5.4 - Mounting the appliance

Refer to gure 5-4:

1.- place the paper template, provided with the appliance, against the wall;

2.- check that the template is square;

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

wall;

4.- remove the paper template;

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

6.- hang the appliance on the plugs “C”

7.- make the appliance hydraulic and gas connections;

8.- make the hydraulic ttings.

5.5 - Domestic hot and cold water

CAUTION !!! water quality must be within

6,5<pH<8,5 acidity value.

CAUTION !!! If water hardness exceeds 20°f (200 mg/l or 11,2°dH) a water softner must be installed on the incoming cold water supply.

CAUTION !!! If water heater works at temperature higher than 60°C and until 75°C, water hardness must be lower than 15°f (150 mg/l or 8,4°dH)

CAUTION !!! Water hardness must not be reduced lower than 5°f (50mg/l or 2,8°dH). Softened water than 5°f (50mg/l or 2,8°dH) is aggressive and can corrode the heat exchanger reducing life expectation.

CAUTION !!! Install a lter with mesh no wider than 0.5 mm² in the domestic cold water inlet.

1 - 3/4” recirculation 2 - 1” D.H.W. outlet 3 - 3/4” gas inlet 4 - 3/4” cold water inlet 5 - Fumes exhaust/Air intake 6 - Support attachments 7 - Ø20 condensate drain

5 - INSTALLATION

Figure 5-1 - Minimum safety distances

Figure 5-2 - Dimensions and attachments centre to centre distances AGUADENS 16 and 22

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5 - INSTALLATION

CAUTION !!!

This water heater can supply water at a temperature up to 95°C (setup of the safety high limit thermostat) and pressure of 10 bar (maximum setup of the relief valve). If the hot water system is built with materials not able to resist to this temperature and pressure, contractor must supply and install a device that will shut-off the appliance before the system material’s maximum operating temperature and pressure are met.

In gures 5-2 and 5-3 the service and maintenance valves

are not shown. Hydraulic and gas connections should

be tted with isolation valves to accomadate service and

maintenance works.

5.6 - Gas

ATTENTION !!! It is prohibited to operate the

appliance with the incorrect gas type. Ceck the data label on the appliance for Natural gas (G20) or Propane gas (G31) to ensure that the correct appliance in being installed.

ATTENTION !!! Check that the gas and supply

pressure are those for which the appliance has been adjusted.

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

adjustment of the appliance. In this case, it can be connected;

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

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

The appliance is provided with the relevant gas conversion kit.

Before the gas pipes are purged it is essential to ensure

that the internal surfaces are clean and free of metal or

plastic lings or any other solid pieces or liquids;

An isolation valve must be installed on the gas supply

pipe adjacent to the appliance;

ATTENTION !!! Before supplying gas to the

appliance, it is essential that the gas pipes have been pressure tested in accordance with the most recent applicable gas standards.

to prevent damage to the appliance gas valve, the

supply pressure should not exceed 50 mbar under any circumstances;

if the gas pipe-work must be tested in excess of 50

mbar, ensure that the appliance is fully isolated.

Figures 5-2 and 5-3 shows the position and the diameter of the gas connection on the appliance. Ensure that the gas service pipe-work is adequately sized to provide the maximum

volume ow rate at the required minimum pressure.

Figure 5-4 - Appliance wall xing detail

1 - 3/4” secondary return 2 - 1” D.H.W. outlet 3 - 3/4” gas inlet 4 - 1” cold water inlet 5 - Fumes exhaust/Air intake 6 - Support attachments

Figure 5-3 - Dimensions and attachments centre to centre distances AGUADENS 37

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Figure 5-5 - Safety valve drain and condensate drain connection

020002.01.005

020002.01.006

5 - INSTALLATION

5.7 - Condensate drain

There is a siphon inside the appliance for the evacuation

of condensate (see gures 3-2 and 3-4 detail “40”) and to

prevent combustion products from escaping, whose end

corresponds to the pipe “B” in gure 5-5. This termination must be conveyed into an anti-odour siphon (gure

5-9 detail “G”) to prevent bad odours returning into the environment (the anti-odour siphon “G” is supplied on request). The tank “A” is mounted in the factory as indicated

in gure 5-5, the exhaust pipe “F” is mounted in the factory as indicated in gure 5-6. In particular, the condensate

discharge must comply with the following:

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 appliance) and to prevent the return of bad odours

from the sewer (detail “G” in gure 5-9). 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 section 9 for the value of acidity of the condensate and the quantities).

be connected to a plastic (not copper) drain pipe with a

minimum internal pipe 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;

5.8 - Safety valve

The appliance is protected against overpressures by a

safety valve calibrated to 10 bar (see gures 3-1 and 3-4 detail “28”). The safety valve drain (detail “C” in gure 5-5), along with the condensate drain (detail “B” in gure 5-5) must be conveyed to a pipe “F” (see gure 5-6) with

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

then taken to the anti-odour siphon (detail “G” gure 5-9).

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 by standard along with the tank “A” in gure 5-5. The anti-odour siphon “G” in gure 5-9 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.

Figure 5-6 - Condensate drain pipe

020002.01.017

Page 19

AGUADENS

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5 - INSTALLATION

5.9 - Hydraulic and gas connections

The appliance models AGUADENS 16 and 22 is supplied

as per standard with the ttings illustrated in gure 5-7,

where: A = Ø 18 recirculation

B = domestic hot water Ø 22

C = 3/4” gas isolation valve (EN 331 type-approved) D = 3/4” domestic cold water isolation valve E = gas Ø 18 F = domestic cold water Ø 18

Once the hydraulic and gas connections have been made, proceed with assembly of the lower cover “G” as indicated

in gure 5-7.

The appliance models AGUADENS 37 is supplied as per

standard with the ttings illustrated in gure 5-8, where:

M = domestic hot water Ø 22 N = domestic cold water Ø 22

5.10 - Water softener (on request)

If the appliance is installed in a geographical area where domestic water has hardness exceeding 20°F (200 mg/l), a polyphosphates softener must be installed on the cold water supply, in order to safeguard the appliance from any lime scale deposits.

Figure 5-7 - Water and gas connections AGUADENS 16 and 22

DGE

020003.01.056

Figure 5-9 - F = condensing drain pipe G = siphon funnel (on request)

020002.01.028

min10 mm max 30 mm

Figure 5-8 - Water and gas connections AGUADENS 37

MNM

020008.01.018

Figure 5-10 - Typical piping

Legenda di gura 5-10:

2 = Gas manual valve (EN 331 type-approved) (Field supplied) 3 = Water isolation valve / Flow rate selector (Field supplied) 4 = Water drain valve (Field supplied) 5 = Condensate drain (Field supplied) 6 = Gas inlet 7 = Cold water supply 8 = Domestic hot water 9 = Condensate drain pipe 10 = Water isolation valve (Field supplied) 11 = Filter (Field supplied)

Page 20

AGUADENS

COSMOGAS

5.11 - Electrical connections

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 3mm, 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 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 appliance is not protected

against the effects caused by lightening.

020003.01.009

5 - INSTALLATION

Figure 5-11 - Electric connections

Key for gure 5-11

A = Commands board box;

B = Electric connections board lid; C = Connections lid closing aps;

D = Electric connections board;

Key for electric contacts

PM = Not used CH = Not used

BUS = Not used

TA = CR04 remote time control (if present) SE = Not used

SB = Storage tank sensor (if present)

MF = Multi-function output

EP = Boiler pump (if present)

DN = Not used (2 = Neutral; 3 = Line) L1 = Appliance power supply line N = Appliance power supply neutral

EARTH SYMBOL = Earth contacts

020002.01.010

62408190

Page 21

AGUADENS

COSMOGAS

5.11.1 - Power supply cable connection

Proceed as follows to connect the power supply cable (refer

to gure 5-11):

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 section 8.2;

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

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 to keep the earth cable (yellow green) 20 mm longer than the other two;

7.- connect the yellow-green cable to the earth terminals (see symbol)

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

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

5 - INSTALLATION

5.11.2 - CR04 remote Time control (on request)

The CR04 remote time control is able to interact with the appliance.

Proceed as follow for the electric (refer to the gure 5-11):

 lay a bi-polar electric cable with minimum section of

1,5 mm², from the appliance to the CR04 remote time control. The cable must also be shielded. Shield must be connected to the earth from the side of the appliance. The maximum length permitted is 100 metres;

 remove the casing and access to the junction box (see

section 8.2);

 connect the cable to the terminals “14” and “15” of the

appliance (see gure 5-11 “TA”).

 connect the other side of the cable to the CR04 remote

time control terminals (follow the CR04 instruction manual).

ATTENTION !!!

Since the cables of the remote control are subject to extremely low security voltage (24Vcc), they must pass through ducts different from the 230Vac supply cables.

Once the remote control has been connected, all the room temperature adjustments and domestic water temperature operations must be carried out directly on the same. Accordingly, remember to closely follow the instructions contained on the CR04 remote control.

Page 22

AGUADENS

COSMOGAS

5.12 - External secondary

return conguration

if the appliance is envisioned with secondary recirculation

(see gure 4-5), operate as follow:

1.- install the appliance as shown in gure 4-5;

2.- open one tap of the sanitary utilities to eliminate presence of air;

3.- turn off the secondary return pump;

4.- open one hot water sanitary tap and wait until the hot water temperature is stable;

5.- close the hot water sanitary tap;

6.- check that after 50 seconds after closing the tap, tap

icon on the display has stopped ashing;

7.- if the tap icon keeps ashing, it means that the internal

pump can run the water in the secondary return circuit to

a value above 2 l/min (veriable on the parameter 1062).

8.- operate on the valve “A” of Figure 4-4 in order to bring

the recirculation ow rate to a value lower than 2 l/min;

9.- now the appliance can work correctly.

Page 23

AGUADENS

COSMOGAS

5 - INSTALLATION

5.13 - Connection water heater to Storage tank

If the storage tank is charged with internal pump (gure 4-7), must consider the residual head of gure 5-13 to size

the system. When the water heater is envisioned with storage tank, as

shown in gure 4-7, before connect must be inserted into the appliance the by-pass valve “C” as shown in gure

5-12. Otherwise, if the storage tank is charged with external

pump (see gure 4-6, 4-8 and 5-14), it is not necessary to

insert the valve “C”. Proceed as follows for the electric connection (refer to the

gure 5-11):

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

2.- disconnect the wire from the sensor detail “46” of gures

3-1 or 3-3;

3.- lay a bi-polar electric cable with minimum section of 1,5 mm2, which goes from the appliance tothe storage tank temperature sensor and connect it to the appliance at

terminals “8” and “9” (SB);

4.- connect the other end of the cable to the storage tank temperature sensor;

5.- introduce the temperature sensor inside the storage tank

sample point (see gure 5-14 detail “8”).

6.- connect the electric power of the storage tank pump to “EP” terminals of the water heater.

7.- set the parameters 3012 = 1 and 3041 = 15.

the water temperature stored inside the storage tank can be chosen by the user in a range between 40 and 60°C.

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.

5.13.1 - Anti- legionella precaution

If the appliance is connected to a storage tank for the preparation of domestic hot water, a disinfection cycle is envisioned against the legionella bacterium. This cycle envisions taking the storage tank 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.

Figure 5-12 - bypass valve “C” to be included in case of installation with storage tank (respect the direction of the valve).

020003.01.048

020008.01.017

020008.01.021

Page 24

AGUADENS

COSMOGAS

5 - INSTALLATION

Figure 5-14 - hydraulic connection to storage tank

KEY 1 AGUADENS water heater 2 Recirculation (if activated) * 3 Domestic hot water outlet 4 Gas inlet 5 Cold water 6 Storage tank 7 Storage tank load pump 8 Storage tank sensor 9 Domestic utilities 10 Hydraulic safety unit (by the installer) 11 Cold water inlet 12 So me state re quir e thi s safe ty pressure-temperature relief valve 13 Non-return valve 14 Recirculation pump (if present)

* The recirculation line is not mandatory.

Figure 5-13 - Curve of residual pressure for the storage tank charging

with internal pump (see gure 4-7)

Prevalenza residua (mH2O)

Portata acqua (l/h)

Page 25

AGUADENS

COSMOGAS

5.14 - Flue systems

ATTENTION !!! The relevant national and local

regulations must be strictly adhered to when installing

the exhaust ue and combustion air pipes.

ATTENTION !!! The exhaust ue gases from

the appliance can reach 90°C in certain conditions.

Therefore, the plastic ue components must be capable

of withstanding high temperatures and they must be

approved for these specic appliance.

ATTENTION !!! This appliance is the

“condensing” type. The polypropylene materials used

in the manufacture of plastic exhaust ue system

which are approved for use are designed to prevent corrosion which would otherwise be caused to the acidity of the condensate. AISI316 stainless steel

exhaust ue system can also be designed for this

purpose.

Regarding this, remember that the 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 however be type-approved for this intended use. The types of exhaust for which the appliance is approved are given in the features table at the end of the

manual under “type” and o the features plate afxed to the appliance, also under “type”. The symbols used to dene

exhaust is reported 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 appliances 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 appliance 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 appliance.

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

ue exhaust.

Figure 5-15 - Exhaust/intake systems

5 - INSTALLATION

Page 26

AGUADENS

COSMOGAS

During operation, especially in winter, a plume will be visible as the water vapour in the exhaust gases come into contact with the outside air. This plume should not cause any concern however the installer should discuss the matter with the customer prior to commencement of the installation in case the aesthetical impact of this plume might cause a problem.

5.14.1 - Exhaust ue with indipendent

combustion air grille type 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 ow 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;

only this gas appliance is installed in the room to be

ventilated;

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 section.

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 27

AGUADENS

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5.14.2 - “Split 80/80PP” System

(polypropylene) (Type C43; C53; C83) AGUADENS 16 and 22

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 5-16.

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

On the exhaust ue side, it is mandatory to install

polypropylene plastic pipes or AISI 316L stainless steel which are resistant to damage from condensation.

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 exhaust ue pipes must always have

an inclination of 2% with the fall back towards the appliances as opposed to the wall terminal.

The appliance is already set-up to collect the

condensate, which must be tted to a drain pipe (see

section 5.7).

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 section 9. Every 90° bend has a loss equivalent to value on section 9. Every 45° bend has a loss equivalent to value on section 9.

ATTENTION !!! The exhaust ue terminal must

be appropriately protected against the effects of the wind (see also 7.9.1 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 5-18.

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 5-18 - Fixing the exhaust and intake pipes

Figure 5-16 - Installation of the “80/80PP Split” System

Figure 5-17 - Clearance

5 - INSTALLATION

020002.01.011

Page 28

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COSMOGAS

5.14.3 - “Split 80/80PP” System

(polypropylene) (Type C43; C53; C83) AGUADENS 37

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 5-19.

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

On the exhaust ue side, it is mandatory to install

polypropylene plastic pipes or AISI 316L stainless steel which are resistant to damage from condensation.

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 be slid out.

The horizontal exhaust ue pipes must always have an

inclination of 2% with the fall back towards the appliance as opposed to the wall terminal.

The appliance is already set-up to collect the

condensate, which must be tted to a drain pipe (see

section 5.7).

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.

ATTENTION !!! The exhaust ue terminal must

be appropriately protected against the effects of the wind (see also 7.9.1 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 5-21.

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 5-21 - Fixing the exhaust and intake pipes

Figure 5-19 - Installation of the “80/80PP Split” System

Figure 5-20 - Clearance

5 - INSTALLATION

020008.01.011

Page 29

AGUADENS

COSMOGAS

5.14.4 - “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 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° 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

62617306

5 - INSTALLATION

Page 30

AGUADENS

COSMOGAS

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

C53; C83): installation examples

In gure 5-22 two examples of installation are given:

- exhaust into chimney with collection of condensate inside the appliance itself.

The horizontal part of the fumes exhaust must slope towards the appliance. The intake must slope towards the outside to prevent rain water entering.

- exhaust to the outside directly with the appliance pipes with condensate collection inside the appliance itself.

The intake must slope towards the outside to prevent rain water entering.

Figure 5-22 - Example of “80/80 PP System” installation

Figure 5-23 - Example of “80/80 PP System” installation

5 - INSTALLATION

In gure 5-23 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 appliance. The intake must slope towards the outside to prevent rain water entering.

Page 31

AGUADENS

COSMOGAS

020002.01.012

5.14.6 - “60/100PP vertical coaxial” System

(polypropylene) (C13; C33 Type) AGUADENS 16 and 22

The appliance is supplied as per standard without ttings

for the connection of the fumes exhaust/air intake. To connect it to a vertical 60/100 system, the relevant kit must

be requested and must be installed as in gure 5-24.

ATTENTION !!! Scrupulously follow the installation

phases of the coaxial pipe as illustrated in gure 5-26. 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 5-30.

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 exhaust ue pipes must always have an

inclination of 2% with the fall back towards the appliances as opposed to the wall terminal.

The combined exhaust/air intake pipe can be extended up

to a maximum distance as indicated in the table in section 9 at the end of the manual. Every 90° bend has a loss equivalent to value on section 9. Every 45° bend has a loss equivalent to value on section 9.

Figure 5-24 - Installation of vertical coaxial system

Figure 5-25 - Quotes and hole centre to centre distances for coaxial drain pre-installation

Figure 5-26 - Positioning the coaxial pipe

5 - INSTALLATION

Page 32

AGUADENS

COSMOGAS

Figure 5-28 - Quotes and hole centre to centre distances for coaxial drain pre-installation

5 - INSTALLATION

Figure 5-29 - Positioning the coaxial pipe

5.14.7 - “60/100PP horizontal coaxial”

System (polypropylene) (C13; C33 Type) AGUADENS 16 and 22

The appliance is supplied as per standard without ttings

for the connection of the fumes exhaust/air intake. To connect the appliance to a 60/100 coaxial system, request

the relevant kit and install it as in gure 5-27.

ATTENTION !!! Scrupulously follow the installation

phases of the coaxial pipe as illustrated in gure 5-29. 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 5-30.

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 be slid out.

The horizontal exhaust ue pipes must always have an

inclination of 2% with the fall back towards the appliances as opposed to the wall terminal.

The combined exhaust/air intake pipe can be extended up

020002.01.013

Figure 5-27 - Installation of horizontal coaxial system

Page 33

AGUADENS

COSMOGAS

5.14.8 - “60/100PP Coaxial” System:

accessories available

The following accessories are available on request to make the 60/100 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 62617234 - N° 1 90° coaxial bend M/F PP 62617252 - N° 6 45° coaxial bend M/F PP 62617231 - N° 7 Coaxial extension L 1m PP 62617304 - N° 3 coaxial PP roof terminal 62617232 - N° 5 coaxial PP wall terminal

5 - INSTALLATION

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AGUADENS

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5 - INSTALLATION

5.14.9 - “60/100PP Coaxial” System:

installation examples

When a coaxial exhaust is made (see gure 5-30), both vertical

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

make the condensate ow into the appliance.

ATTENTION !!! The horizontal terminal must be

protected against the accidental return of rain water. To do this, gables must be installed (or projections or balconies or relevant protections ) with the minimum

dimensions given in gure 5-30

Figure 5-30 - Examples of coaxial pipe installations

Page 35

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COSMOGAS

020008.01.013

5.14.10 - “80/125PP vertical coaxial”

System (polypropylene) (C13; C33) AGUADENS 37

The appliance is supplied as per standard without ttings

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

be requested and must be installed as in gure 5-31.

ATTENTION !!! Scrupulously follow the installation

phases of the coaxial pipe as illustrated in gure 5-33. 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 5-34.

Take particular care with the installation of pipes in the

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

The horizontal exhaust ue pipes must always have an

inclination of 2% with the fall back towards the appliances as opposed to the wall terminal.

The combined exhaust/air intake pipe can be extended up

Figure 5-31 - Installation of vertical coaxial system

Figure 5-32 - Quotes and hole centre to centre distances for coaxial drain pre-installation

Figure 5-33 - Positioning the coaxial pipe

5 - INSTALLATION

Page 36

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5.14.11 - “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

5 - INSTALLATION

62617255

62617321

62617322

62617323

62617324

62617325

Page 37

AGUADENS

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5.14.12 - “80/125PP Coaxial” System:

installation examples

When a coaxial exhaust is made (see gure 5-34), both vertical

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

make the condensate ow into the appliance.

ATTENTION !!! The horizontal terminal must be

protected against the accidental return of rain water. To do this, gables must be installed (or projections or balconies or relevant protections ) with the minimum

dimensions given in gure 5-34.

Figure 5-34 - Examples of coaxial pipe installations

5 - INSTALLATION

Page 38

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COSMOGAS

6.1 - Operating

Before starting the appliance up, it is 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 user 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 correct adjustment of the

temperatures settings.

6.1.2 - Filling the condensate drain siphon

The siphon found inside the appliance (see gures 3-2 and 3-4 detail “40”), must be lled with water to create the water head able to prevent the fumes escaping from pipe “F” in gure 5-9.

Proceed as follows to do this:

(refer to gure 6-1 for models 16 and 22 or gure 6-2 for

model 37)

1.- loosen the screw “E”;

2.- remove the lid “D” and the gaskets “C”;

3.- introduce a rubber hose into the opening “B” (do not confuse with “A”) and the other end of the hose into the funnel;

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

5.- re-mount everything in reverse order.

6 - OPERATING

Figure 6-1 - Filling the condensate drain siphon on models 16 and 22

ATTENTION !!! If the appliance remains off for

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

explained above.

6.2 - General recommendations regarding the supply of gas

For commissioning of the appliance, have a professionally

qualied technician perform the following checks:

That the appliance is powered by the type of fuel for

which it is set-up.

That the gas supply pressure (with appliance operating

and at a standstill) is within the maximum and minimum values indicated in the table in section 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 exhaust ue terminal discharge terminal and

the combustion agent air intake terminal are free from any obstruction.

That the exhaust ue terminal 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.

BDB

020008.01.023

Figure 6-2 - Filling the condensate drain siphon on model 37

Page 39

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6.3 - Type of gas for which the appliance is regulated.

There is a label on the front of the appliance certifying the gas supply type and pressure for which it is adjusted. The appliance 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 LP 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.

6.4 - 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 appliance 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 appliance casing as reported in section 8.2; 3 - access the control and command board as reported in

section 8.2;

4 - move the microswitch “B” from left to right to the “ON”

position (see gure 6-6);

5 - apply electric power to the appliance; 6 - the parameter 3001 will appear on the appliance’s

visual display, followed by its value;

7 - using the

and keys, 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 6-8.

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

11.- remove voltage from the appliance, re-position the

microswitch “B” from right to left in “OFF” position (see gure

6-6).

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

6-3, detail “C”);

15. - remove the gas inlet pipe via the two ttings (see gure 6-3, details “H” and “L”);

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

releasing the valve “P”(See gure 6-4);

020003.01.040

020003.01.41

020002.01.042

Figure 6-5 - Replacing the gas nozzle

Figure 6-4 - Removing the gas valve

Figure 6-3 - Removing the air manifold

6 - OPERATING

Page 40

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

18. - replace the gas nozzle “R” (see gure 6-5) with an appropriate one according to that stated in gure 6-8

under “Diameter of the gas nozzle”;

19. - remount the gas valve (see gure 6-4, detail “P”),

making sure to reposition the spring “M”.

20. - remount the gas supply pipe via the two ttings (see gure 6-3, details “H” and “L”);

21. - remount the air manifold (see gure 6-3, detail “C”);

22. - open the gas isolation valve;

23. - check for gas leaks an all joints.

ATTENTION !!! Perform the gas leak test according

to that established by the current Standard and only using

soapy water. The use of naked ames is prohibited.

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 section 6.6;

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

6-12 detail “A”);

26.- control and adjust the CO2, following the procedure in section 6.7;

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

the appliance (see gure 6-7), certifying the appliance’s new state of adjustment, as follows: apply label “B” if the

appliance has been converted from NATURAL GAS to LP GAS; apply label “A” if the appliance has been converted from LP GAS to NATURAL GAS.

B – Microswitch

Figure 6-6 - Positioning the microswitch

020002.01.043

OFF

6 - OPERATING

Model

Type

of gas

Setting

parameter

3002

Gas supply

minimum pressure

(mbar)

Gas supply

maximum

pressure

(mbar)

Gas nozzle

diameter

(mm)

CO2

Maximum

power

(%)

CO2

Minimum

power

(%)

Maximum

power

(%)

Minimum

power

(%)

G20 50 15 45 4,9 9,0 ±

0,3 8,5 ± 0,2 4,8 ± 0,2 5,5 ± 0,2

G31 51 15 45 3,7 10,5 ± 0,3 10,0 ± 0,2 4,8 ± 0,2 5,6 ± 0,2

G20 52 15 45 6,5 9,0 ±

0,3 8,5 ± 0,2 4,8 ± 0,2 5,5 ± 0,2

G31 53 15 45 4,7 10,5 ± 0,3 10,0 ± 0,2 4,8 ± 0,2 5,6 ± 0,2

G20 54 15 45 10,0 8,7 ±

0,3 8,3 ± 0,2 4,7 ± 0,2 5,4 ± 0,2

G31 55 15 45 6,5 10,1 ± 0,3 10,8 ± 0,2 4,7 ± 0,2 5,8 ± 0,2

Figure 6-7 - Labels certifying the new status of adjustment of the appliance

Figure 6-8 - Correspondence table for the parameter 3002 and the operating values

Page 41

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6 - OPERATING

6.5 - Ignition

1.- open the gas isolation valve;

2.- power the appliance electrically;

3. - adjust the temperature desired 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 storage tank, the delivery temperature as been reached)

b) ashing

icon: domestic hot water is being withdrawn.

4.- open the domestic hot water tap to the maximum to

evacuate the air inside the water heater. If the water ow

appears to be limited, open two or three taps to evacuate completely the air. On models 37 you can help by opening

the manual air purge valve (see detail “47“ of gure 3-4 )

6.6 - Check the gas supply pressure

The gas supply pressure must correspond to that stated in the table in section 9 at the end of the manual.

For its verication, proceed as follows:

1.- close the gas supply manual valve;

2.- access the components inside the appliance, following the procedure in section 8.2;

3.- loosen the pressure port “A” (see gure 6-9);

4.- connect to a pressure gauge with resolution of at least 0,1 mbar (1 mmH2O);

5.- open the gas manual valve;

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

7.- open the domestic hot water tap to maximum;

8.- wait for the temperature of the appliance to stabilise;

9.- check that the pressure does not drop to a lower value than the “gas supply minimum pressure” given in section

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 range;

10.- close the domestic hot water tap;

11.- close the pressure point “A” in gure 6-9;

12.- check for any gas leaks on port “A” in gure 6-9.

CAUTION !!! Perform the leak test using a soap

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

Figura 6-9 - Valvola del gas

A - Presa di pressione ingresso gas.

020003.01.023

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6 - OPERATING

6.7 - Measurement and

adjustment of CO2 levels

The appliance in normal operating condition and for altitudes within

1000 m, must have a CO2 (carbon dioxide) level in the exhaust ue

gases within the parameters as detailed in section 9. A value which is different to those detailed can cause malfunctions and is strictly prohibited. Combustion analysis must be performed to check and eventually adjust this value. Proceed as follows:

1.- insert a combustion analyser on the appropriate point on

the ue tting “B” in gure 6-10 or 6-11;

2.- open the domestic hot water tap fully;

3.- wait for the CO2 measurement to stabilise;

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

table in gure 6-8, “CO2 maximum power”. If the value

measured is different from the value read, it must be

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

6-8. proceeding as follows:

a) turn screw “A” (gure 6-12) clockwise to decrease the

level of CO2;

b) turn screw “A” (gure 6-12) counter-clockwise to increase

the level of CO2;

5.- once the check has been completed, seal the screw “A” in

gure 6-12 with red paint or similar system;

6.- follow section 7.8 to enter parameter 2010 and set it to Lou;

7.- open a DHW faucet to draw some water;

8.- now appliance will re at minimum capacity;

9.- wait for the CO2 measurement to stabilise;

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

table in gure 6-8, “CO2 minimum power”;

11.- if the value is not into the range, use screw “B” as per gure to adjust the CO2 value. Rotate the screw counter-

clockwise to reduce the CO2 value or clockwise to increase the CO2 value;

12.- once the check has been completed, seal the screw “B” in gure 6-12 with red paint or similar system;

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

2010 and use the and keys, to modify

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 previously-opened domestic hot water tap.

Figure 6-10 - Combustion analysis port on models 16 and 22

020002.01.015

Figure 6-12 - Gas valve

A - High re CO2 adjustment screw B - Low re CO2 adjustment screw

ABA

020002.01.045

Figure 6-11 - Combustion analysis port on model 37

BDB

020008.01.023

Page 43

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6 - OPERATING

6.8 - Self-learning and calibration of the minimum and maximum capacity output

This water heater have a self-learning procedure to reach the best water temperature tuning. In order to do this, the water heater automatically calibrate the maximum and minimum capacity based on the typical tappings.

Because at the rst installation it is not known what’s the

typical tappings, for an immediate satisfactory temperature tuning it is suggested to help the water heater in its selflearning. Operate as follows:

1.- open a hot water faucet to the maximum ow;

2.- using button

, increase the value to the

maximum water temperature;

CAUTION!!! A domestic hot water temperature

exceeding 51°C can cause permanent damages 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.

3.- water heater should re for at least ve minutes, to its

maximum capacity or to the maximum capacity of the system where it is installed

4.- now the maximum capacity is calibrated; 5 - enter installer menu (see procedure on section 7.8) and

set parameter 2010 to LOu

6.- now burner will re at minimum capacity. Wait at least ve minutes;

7.- now the minimum capacity is calibrated;

8.- Turn OFF and ON the water heater (see section 7.10);

9.- close your hot water faucet;

10.- now water heater learned the rst minimum and

maximum limit of this installation and it will correctly tune the hot water temperature.

6.9 - Adjust the domestic

hot water ow rate

If the appliance is installed in a geographical area where

the temperature of the cold water is very low, the ow rate

of domestic hot water that passes inside the appliance may have to be reduced. It is therefore good practice to perform this adjustment:

1.- switch the appliance on;

2.- using the

and keys, adjust the

temperature of the domestic hot water to 48 - 50°C;

3.- open the domestic hot water tap fully. In the case of a single lever mixer, the position must be completely on “HOT”;

4.- wait 3 minutes for the temperature to stabilise;

5 - if the water temperature is too cold, the ow rate

must be reduced via the selector “3” in gure 5-10 (or

something similar), until the desired temperature is reached.

6.10 - Check the capacity input

The heater has a factory-set air/gas ratio. The pressure of the gas at the burner is indirectly controlled by the blower. The only way to check the heater capacity input is operating directly on the gas meter. To do so proceed as follow:

1. turn the power switch (item “A” in Figure 7-1) to on;

2. gain access to the installer menù (see section 7.8) and set parameter 2010 to HIGH. Now heater will run at high

re for 20 minutes;

3. open a DHW faucet to the maximum ow;

4. measure the capacity input to the gas meter. This should match with the value given in technical data section 9

header “Maximum heat input” with a tollerance of +/-

10%;

5. if the capacity input is too low, check: a) that there are no obstructions in the combustion air

and/or vent system;

b) check that the ue and air intake lenght is below the

maximum specied in the technical data, section 9;

c) check that heat exchanger and burner are clean (see

section 8.4).

Page 44

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7 - USE

Figure 7-1 - Control board

Key for gure 7-1

A - On/off switch

B - Reset Key C - Burner status (the burner is on when this icon is

present) D - State of the domestic water service: Icon off = domestic water off Icon on = domestic water active but not operating

Icon ashing

= domestic water active and operating

F - Heating plant pressure or indicator of the various

parameters inside the various menus G - Icon for entry into the “Installer” menu H - Domestic hot water temperature or indicator of the

values assumed by the various parameters L - Unit of measurement of the temperature displayed M - Appliance blocked (see sections 7.9.1 and 7.9.2 for the

diagnostics) N - Key for switching on and increasing the temperature of

the domestic hot water or for scrolling and changing the

value of the parameters P - Key for reducing the temperature of the domestic

hot water (below minimum, the domestic hot water is

switched OFF) or for scrolling and changing the value of

the parameters

7.1 - Display

During operation the display shows the appliance operating state as well as other information as indicated in section 7.9 (Diagnostics). Other parameters can be consulted through the “User menu” (see section 7.7), which are useful for understanding operation of the appliance and to control the latest errors or lockout 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

section 7.6 (Energy saving).

7.2 - Ignition procedure

1.- open the gas manual valve;

2.- power the appliance electrically;

3.- adjust the temperature of the domestic hot water as per section 7.4.

4.- open a DHW faucet.

The command and control equipment will switch the burner on. If ignition does not take place within 20 seconds, (the appliance automatically re-attempts ignition 3 times), the appliance

blocks and the visual display will show Loc 1. Press the RESET key to restore the normal operating conditions. The appliance will automatically attempt a new ignition.

CAUTION !!! If shutdown due to blocking is

repeated frequently, contact a qualied technician to reset

the normal operating conditions.

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7 - USE

7.3 - “User menu”

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

“F”, 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 “F” 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 section 7.7 can be queried in this menu.

7.4 - Adjustment of the domestic

hot water temperature

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 “H” in gure 7-1 will start to ash and show the temperature that is being set. The range of

adjustment for the temperature of the domestic hot water goes from 40°C to 60°C. For higher output temperatures, contact your technician to change the maximum output temperature factory setting, see section 11.

7.5 - Timings of the various functions

To preserve the life of the appliance, improve the generated comfort and increase energy savings, have been inserted timings during operation. These timings are:

- Post circolation pump: each time ending on the domestic service, the pump continues to operate for 40 seconds;

- Anti-block pumps: every 24 hours is a forcing of the recirculation pump and of the additional storage tank charging pump (if present);

- Anti-legionella; if the appliance is connected to a storage tank for the D.H.W. production, every seven days, this latter is forced, to temperature of 60°C to perform disinfection against the bacterium of the legionella. This function turns ON even after two hours that the appliance has been electrically powered.

7.6 - Display Energy Saving mode

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 present in the “Installer menu”

(see section 7.8). If the parameter is set at OFF, the display will remain on constantly.

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7 - USE

Parameter Parameter Description M.U. 1001 Heat exchanger outlet temperature 1 °C 1002 Hot water outlet temperature or storage tank temperature (if any) °C 1003 No function / 1004 External temperature (visible when an external temperature sensor is installed) (N/A) (N/A) 1005 Heat exchanger outlet temperature 2 (safety sensor) °C 1006 Exhaust ue temperature °C 1007 Cold water inlet temperature °C 1008 Ionisation current uA 1009 Status of the pump inside the appliance ON/OFF 1010 Status of the central heating side diverter valve

(OFF = in central heating mode; ON = in domestic hot water mode) (N/A)

(N/A)

1011 Status of the central heating side diverter valve

(ON = in D.H.W. mode; OFF = in central heating mode) (N/A)

(N/A)

1012 Central heating supply temperature calculated via the external sensor (N/A) (N/A) 1013 Status of the timer contact (N/A) open or closed 1014 Exhaust ue temperature 2 (safety sensor) (N/A) (N/A) 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 section 7.9.1) (255 means no block) / 1052 Latest error condition recorded (Err) (see section 7.9.2) (255 means no error) / 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 (N/A) (N/A) 1057 Number of hours worked in domestic hot water mode h x 10 1058 Number of burner working days days 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 (N/A) (N/A) 1062 Current domestic hot water ow rate (Meter have a tolerance of +/- 15%) l/min

N/A = Not applicable

7.7 - “User menu” Parameters

To access the “User menu” follow that reported in section 7.3. The following parameters can be queried in this menu:

Page 47

AGUADENS

COSMOGAS

7.8 - “Installer menu” & parameters

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 indepth knowledge of the appliances can modify them.

The appliance command and control board makes this parameter menu available to the technician for the analysis of operation and adaptation of the appliance 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 “H” in gure 7-1 will start to ash);

b.- modify the value of the parameter using the

and

keys;

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

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 Parameter Description M.U. Setting range

Factory

value

Custo-

mised

values

2001 Central heating minimum power level (N/A) (N/A) (N/A) 1 (N/A)

2002 Central heating maximum power level (N/A) (N/A) (N/A) 100 (N/A)

2003 Central heating operating mode (N/A) (N/A) (N/A) 0 (N/A)

2004 Stand-by time after maximum differential (N/A) (N/A) (N/A) 10 (N/A)

2005 Post-circulation in central heating mode (N/A) (N/A) (N/A) 120 (N/A)

2010

Forcing of fan and burner (Water heater will work only in presence of demand of DHW)

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 maximum power

OFF

2011 Forcing the pump (N/A)

(N/A)

On = Pump on OFF = Pump off

OFF

(N/A)

2012 Forcing of the domestic central heating side diverter valve (N/A) (N/A) (N/A) OFF (N/A)

2013 Forcing of the domestic hot water side diverter valve (N/A) (N/A) (N/A) OFF (N/A)

2014 Icons test on the display. By pressing the REST 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 (N/A)

(N/A) (N/A) 22 (N/A)

2021 Climatic adjustment: design external temperature (winter) (N/A) (N/A) (N/A) -5 (N/A)

2022 Climatic adjustment: supply temperature corresponding to the

design external temperature (winter) (N/A)

(N/A) (N/A) 80 (N/A)

2023 Climatic adjustment: external spring-like temperature (N/A) (N/A) (N/A) 20 (N/A)

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7 - USE

2024 Climatic adjustment: supply temperature corresponding to the

external spring-like temperature (N/A)

(N/A) (N/A) 40 (N/A)

2027 Temperature reduction by room thermostat opening (N/A) (N/A) (N/A) 10 (N/A)

2040 Climatic adjustment: central heating boost temperature (N/A) (N/A) (N/A) 0 (N/A)

2041 Climatic adjustment: central heating boost time (N/A) (N/A) (N/A) 20 (N/A)

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

time (N/A)

(N/A) (N/A) 180 (N/A)

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

temperature differential (N/A)

(N/A) (N/A) 16 (N/A)

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 40

2063 Maximum time for loading storage tank (N/A) (N/A) (N/A) 60 (N/A)

2064 Number of ow meter revs. for every litre of water (N/A) (N/A) (N/A) 3,2 (N/A)

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

2067 Storage tank loading procedure (N/A)

0 = (N/A); 1 = (N/A); 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 switch-

off in minutes.

7.9 - Diagnostics

During normal operation of the appliance, the visual display

in gure 7-1 continuously shows the state of work of the

appliance, via the following indications:

Parameter Parameter Description Display on visual display “H” in gure 7-1

AFro

Anti-freeze function active Appliance temperature (°C)

Loc

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

frequently, contact a professionally qualied technician

Lockout code (see section 7.9.1 for decode)

Err

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

qualied technician

Error code (see section 7.9.2 for decode)

ALEg

Anti-legionella function running (see section 7.5).

It will end on reaching the water temperature of 60°C inside the storage tank.

Storage tank temperature (°C)

SEr

Maintenance request for the appliance Appliance temperature (°C)

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7.9.1 - Diagnostics “Loc” block fault codes and potential solution

7 - USE

Block Block Description Checks Solutions

Loc 0 Internal memory error

E2prom at command board

Replace the command and control board.

Loc 1 1 No ame detection after

three successive ignition attempts.

Control: Supply gas pressure (see section 6.6), sparks on the ignition electrodes (see section 8.6); 230Vac 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 4 (follow the procedure in section 8.13)

the supply pressure is not correct, operate upstream from the appliance to restore it; 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 4, the CO2 must be checked (follow section 6.7) 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

Replace the command and control board.

Loc 4 Appliance 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

Check that it is powered at 300 Vdc. If the fan is powered, it must be replaced, alternatively

replace the command and control board.

Loc 6 Fan error too slow

Loc 7 Fan error too fast

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 Software error inside the

command board

Replace the command and control board.

Loc 12 Software error inside the

command board

Replace the command and control board.

Loc 13 Not applicable (N/A) (N/A)

Loc 14 Not applicable (N/A) (N/A)

Loc 15 Appliance has reached

the maximum temperature of operation

Check that the pump works;

Check that the electrical resistance of the two sensors 1001 and 1005 combine with the chart referred to in section 8.14;

Check that the high limit ue gas temperature fuse has

not been involved;

Check air is purged from water heater (see section 6.5);

Restore the ow of water or

replace the control board;

If either or both of the sensors are not within correct values, replace sensor;

If the high limit ue gas temperature fuse has been

involved (the contact is open) before replacing the high

limit verify the temperature of the ue gas referred to

in the technical data from section 9;

CAUTION!!! If the temperature is not within the correct value DO NOT ATTEMPT ANY REPAIR but contact the manufacturer.

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7 - USE

Loc 16 Exhaust ue maximum

temperature.

ATTENTION !!! If the block is repeated more than once a day, turn off the appliance and

contact a qualied

service center. NOT GROPE TO RESTORE.

Check that the pump is operating correctly;

Measure that appliance performance; it must correspond to that declared in the technical features.

Check air is purged from water heater (see section 6.5)

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

If the appliance is under-performing, the primary

heat exchanger might be dirty either on the exhaust

ue side or the domestic water side or both. Follow

instructions in section 8.4 and check again.

Loc 17 Software error inside the

command board

Replace the command and control board.

Loc 18 Software error inside the

command board

Replace the command and control board.

Loc 19 Software error inside the

command board

Replace the command and control board.

Loc 20 Flame still present 10 sec.

after closing gas valve

Replace the gas valve or the command and control board.

Loc 21 Flame present before

ignition

Replace the gas valve or the command and control board.

Loc 22 Flame lost three times Control: that the ionisation current is at a value over 4

(follow the procedure in section 8.13)

Control: that the exhaust ue system is not being

affected by high gusts of wind or nearby mechanically operated fans

If the ionisation current is not over 4, the CO2 must be checked (follow section 6.7) 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 a horizontal exhaust ue terminal is exposed to

unusually high wind conditions or nearby mechanically

operated fans then a suitable deection shield or

protection should be considered or an alternative location should be considered. The same approch

should be taken for a vertical exhaust ue and in

addiction, check that downdraughts are not being

encountered due to the proximity of higher roof proles.

Loc 23 Not applicable (N/A) (N/A)

Loc 24 Not applicable (N/A) (N/A)

Loc 25 1001 and 1005 sensors

measure the different temperatures for more than 60 seconds.

Check that the electrical resistance of the two sensors match the graphics in section 8.14;

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

Loc 26 Not applicable (N/A) (N/A)

Loc 27 Not applicable (N/A) (N/A)

Loc 28 Not applicable (N/A) (N/A)

Loc 29 Software error inside the

command board

Replace the command and control board.

Loc 30 Software error inside the

command board

Replace the command and control board.

Hot water temperature is not stable Repeat calibration procedure (see section 6.8)

Check if pump is in speed 3

Water ow is present but the water

heater doesn’t work

Check if the water ow (parameter 1062) is higher than the minimum water ow as stated on section 7.7.

N/A = Not applicable

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7 - USE

7.9.2 - Diagnostics “E” error fault codes and potential solutions

Error Error Description Checks Solutions

Err 100 Software error inside the

command board

Replace the command and control board.

Err 101 Software error inside the

command board

Replace the command and control board.

Err 102 Software error inside the

command board

Replace the command and control board.

Err 103 Software error inside the

command board

Replace the command and control board.

Err 104 Software error inside the

command board

Replace the command and control board.

Err 105 The supply temperature

exceeds 110°C with the gas valve closed

Check that the electrical resistance of the two supply sensors match the graphics in section 8.14.

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 supply sensor must be replaced.

The gas valve must be replaced if it does not close correctly.

Err 106 Software error inside the

command board

Replace the command and control board.

Err 107 Software error inside the

command board

Replace the command and control board.

Err 108 Software error inside the

command board

Replace the command and control board.

Err 109 Software error inside the

command board

Replace the command and control board.

Err 110 Software error inside the

command board

Replace the command and control board.

Err 111 Software error inside the

command board

Replace the command and control board.

Err 112 Software error inside the

command board

Replace the command and control board.

Err 113 Software error inside the

command board

Replace the command and control board.

Err 114 Flame detected in a

moment when it should not be present

Replace the gas valve.

Err 115 Central heating water

low pressure (N/A)

(N/A) (N/A)

Err 116 Central heating water

pressure sensor error (N/A)

(N/A) (N/A)

Err 117 Not applicable (N/A) (N/A)

Err 118 Software error inside the

command board

Replace the command and control board.

Err 119 Cold water inlet sensor

(1007) circuit open

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 120 Heat exchanger outlet

sensor (1001) circuit open

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 121 Heat exchanger outlet

sensor (1005) circuit open

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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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Err 122 Domestic hot water

outlet sensor (1002) circuit open

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 123 Flue gas sensor (1006)

circuit open

Check that the electrical resistance of the sensor matches the graphics in section 8.14

Check that the wires between the board and the sensor are connected correctly

If the sensor does not match, the double exhaust sensor must be replaced.

If the wires are not connected correctly, the connections must be restored.

Err 124 Not applicable (N/A) (N/A)

Err 125 Not applicable (N/A) (N/A)

Err 126 Cold water inlet sensor

(1007) circuit, in short circuit condition

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 127 Heat exchanger outlet

sensor (1001) circuit, in short circuit condition

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 128 Heat exchanger outlet

sensor (1005) circuit, in short circuit condition

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 129 Domestic hot water out-

let sensor (1002) circuit, in short circuit condition

Check that the electric resistance of the sensor matches the graphics in section 8.14. 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 130 Flue gas sensor (1006)

circuit in short circuit condition

Check that the electrical resistance of the sensor matches the graphics in section 8.14

Check that the wires between the board and the sensor are connected correctly

If the sensor does not match, the double exhaust sensor must be replaced

If the wires are not connected correctly, the connections must be restored

Err 131 Not applicable (N/A) (N/A)

Err 132 External temperature

sensor circuit (1004) in short circuit condition (N/A)

(N/A) (N/A)

Err 133 Not applicable (N/A) (N/A)

Err 134 Not applicable (N/A) (N/A)

Err 135 Phase neutral reversed

error

(N/A) (N/A)

Err 200 Not applicable (N/A) (N/A)

Err 201 Not applicable (N/A) (N/A)

Err 202 Not applicable (N/A) (N/A)

Err 203 Too high difference

between supply and return sensor

(N/A) (N/A)

N/A = Not applicable

7.10 - Switch ON and OFF the appliance

To switch Off the appliance press in the same time the

and

keys and On will appear then press key

and OFF will appear; Press RESET key to conrm the OFF state. To switch back ON the appliance press in the same time

the

and keys and OFF will appear. Then

press

key and On will appear; press RESET key to

conrm the On state.

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8 - MAINTENANCE

8.1 - Care and maintenance

This section must be brought to the attention of the user by the installer so that the user can make the necessary arrangements with a qualified service agency for the periodic care and maintenance of the heater. The installer must also inform the user that the lack of proper care and maintenance of this heater and any fuel burning equipment may result in an hazardous condition. Installer should discuss contents of section 7 (User’s section) with the user.

A trained and qualied service technician should perform the inspection listed in these instructions (see gure 8-1) each year.

CAUTION !!! Appliance maintenance must only

be performed by a professionally qualied technician.

CAUTION !!! Before every maintenance

operation, disconnect the appliance from the electric power supply, using the relevant switch in the vicinity.

CAUTION !!! Close the manual gas valve before

any maintenance operation

Service and maintenance schedules

Service Technician

Annual Startup:

- Address reported problems (Follow section 8.1.2);

- Check all piping for gas leaks (Follow section 8.1.3)

- Verify ue and air lines in good condition and sealed tight (Follow

section 8.1.4);

- Check water pressure/system piping (Follow section 8.1.5);

- Check control settings (Follow section 8.1.6);

- Check wiring and connections (Follow section 8.1.7);

- Check ame signal (Follow section 8.6);

- Inspect combustion chamber. Clean and vacuum if ther’is presence of

debris and/or products of the combustion (Follow section 8.4).

- Inspect thermal insulations inside the combustion chamber and replace

them if they are cracked or damaged (Follow section 8.3.1)

- Clean condensate siphon and ll with fresh water (Follow section 8.5).

- Check the capacity input (Follow section 6.10).

Figure 8-1 - Service and Maintenance Schedules

8.1.1 - Service recall

In order to maintain maintenance frequency, the parameter

2080 is present in the installer menu (see section 7.8),

which is used to activate the maintenance call (Service) along with parameter 2081 which is used to set the

operating days which must pass between one intervention

and the next. The control system identies the operating

days, verifying the burner activity time. Proceed as follows to activate the call service:

1.- access the Installer menu (see section 7.8)and set

parameter 2080 on 0n;

2.- access parameter 2081 and set the appliance

operating days which must pass between one call and the next.

The call will be completed with

SEr on the display. To

remove the indication 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.

8.1.2 - Address reported problems

Inspect any problems reported by the owner and correct before proceeding.

8.1.3 - Check all piping for gas leaks

1. Inspect all gas piping and verify to be leak free.

2. Check for gas leaks: using soap solution, check for gas

leaks from meter to appliance including all pipes and ttings

and heater connection. Use liquid soap solution for all gas testing.

CAUTION !!!

Do not check for gas leaks with an

open ame. Use the bubble test. Ignoring the bubble test or check for gas leaks with an open ame can cause

explosion, severe personal injury, death, or substantial property damage.

8.1.4 - Verify ue and air lines in good

condition and sealed tight;

1. Check for obstruction, condensation, corrosion and physical damage, water stains, any signs of rust, other corrosions or separation of the vent and air intake piping.

2. Check outside terminations. Screens and louvers should be free of any debris and must be cleaned as required.

8.1.5 - Check system water pressure/

system piping/expansion tank;

1. Check water piping and accessories for leaks. Slightest leaks should be corrected.

2. Check the system to be full of water and pressure to remain stable at correct setting on gauge.

CAUTION !!!

Eliminate all system or heater leaks. Continual fresh makeup water will reduce heater life. Minerals can build up in sections, reducing heat transfer, overheating heat exchanger, and causing heat exchanger failure. Leaking water may also cause severe property damage.

8.1.6 - Check control settings

1. Set heaters setpoint low enough to end call for heat (see

section 7.4. Gas valve should close and burner should stop

ring. Fan will go into a post purge, then shuts off.

2. Control Safety Shutdown test: with the burner ring, close the

manual gas shut off valve (detail “2” Figure 5-10). Gas valve

should close and burner should stop ring. The boiler will

try for ignition three times, then should lock out with a “Loc 1” error shown on the display. Open the manual gas shutoff valve, and verify your gas meter.

Gas ow must be zero

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Figure 8-2 - removing the casing and opening of command board

020003.01.018

8 - MAINTENANCE

CAUTION !!!

If gas ow occurs, close the manual gas

shutoff valve and troubleshoot the system to determine why

there is gas ow when the gas valve should be deenergized.

Do not operate the boiler until the problem is resolved or a

re or explosion causing property damage, personal injury

or loss of life may occur!

3. Press the “Reset” key to return to normal operation.

8.1.7 - Check wiring and connections

Inspect all heater wiring, making sure wires are in good condition and securely attached.

8.2 - Casing removal

Proceed as follows to remove the casing (refer to gure

8-2):

1.- pull the lower cover “A” towards the front for approx.

10mm

2.- push the lower cover “A” downwards;

3.- loosen the screws “H”;

4.- pull the lower part of the front-piece “B” towards the front

and then slide it out upwards until it is released from the guides “C”;

To access the command and control board:

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 “F” closing aps;

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8 - MAINTENANCE

8.3 - Burner and fan removal

Proceed as follows to remove the burner fan unit (refer to

gure 8-3 when not differently specied):

1.- access the internal components following section 8.2;

2.- remove the air manifold (detail “C” in gure 6-3) rotating

it towards the outside of the appliance and then pulling it

towards the right (see gure 6-3);

3.- unscrew nut “C” from the valve “D”;

4.- disconnect the cables “B” and the detection cable from

the ignition and detection electrodes (details “15” and

“35” of gures 3-1, 3-2, 3-3 and 3-4);

5.- unscrew the four nuts “E”;

6.- extract the group “F” as per gure;

8.3.1 - Thermal insulations

Thermal insulations must be checked every year and replaced if they are cracked or damaged. See Figures 8-3 where the thermal insulations (items “G” and “H”) are showed assembled in the burner and in the heat exchanger.

Once veried the condition of thermal insulation (see

Figure 8-3), if necessary, replace with spare parts kit, following the instructions supplied with it. With the thermal insulation must be replaced the burner gasket “L” and the two gaskets of the electrodes.

8.4 - Gas burner and heat exchanger outer surface cleaning procedure

To correctly clean the burner and the heat exchanger

(exhaust ue side), proceed as follows (refer to gure 8-3 when not differently specied):

1.- access the internal components following section 8.2;

2.- remove the burner unit following section 8.3;

3.- use a suction device to remove the unburned residues

present inside the combustion chamber;

4.- pass a cylindrical brush with plastic bristles inside the

combustion chamber

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 isolation valve;

8.- restore the electric power supply.

9.- check that there are no gas leaks on all joints;

CAUTION!!! Perform the leak test using a soap

solution. The use of ames is prohibited.

CAUTION!!! Every time you clean the burner and

the heat exchanger verify the good condition of thermal insulation “G” and “H” (following section 8.3.1).

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8 - MAINTENANCE

Figure 8-3 - Removing the burner fan unit

020009.01.032

CAUTION!!!

If gasket is damaged DO NOT reuse, the heat exchanger door must be replaced.

NOTICE! Gasket is intended for sealing combustion. If damaged DO NOT reuse, the heat exchanger door must be replaced. Consult factory for replacement heat exchanger door.

GASKET

HEAT EXCHANGER DOOR

020003.01.062

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8.5 - Condensate siphon cleaning procedure

For correct cleaning of the collection siphon and the conveying of the condensate produced by combustion,

operate as follows (refer to the gures 8-4, 8-5 and 8-6):

1.- with the appliance on, open a domestic hot water tap or

taps fully to force the burner to its maximum power and the level of the liquid present inside the siphon tank “D”

lowers (see gure 8-5);

2.- switch off the appliance and disconnect the electrical

supply;

3.- access the internal components following section 8.2; 4 - remove the burner fan unit following section 8.3; 5 - cover the electric box with a cloth to protect it from any

residues of water inside the siphon to be removed.

6.- slide the support “B” outwards from the holding support;

7.- slide the tank “C” downwards, paying attention to the

fact that it is full of condensate water and this could escape;

8.- extract the siphon outwards (see gure 8-5) paying

attention to disconnect the collection pipes of the water coming from the upper part of the appliance and from the air vent valve.

9.- clean the decanting tank “D”;

10.- 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 inserted correctly into seat “H”;

11.- restore the level of liquid inside the siphon following the

procedure in section 6.1.2.

Figure 8-5 - Removing condensate collection siphon

Figure 8-6 - Condensate collection siphon

020002.01.030

8 - MAINTENANCE

Figure 8-4 - Removal of the condensate collection siphon

020003.01.053

020003.01.054

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8.6 - Ignition and ame

isonising electrode position

For good working order of the appliance, it is indispensable

that the electrodes are positioned correctly (refer to gure

8-7):

- 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 “C” from the surface

of the burner must be between 5,5 and 6,5 mm.

Figure 8-8 - Replacing the pump motor

8 - MAINTENANCE

Figure 8-7 - positioning the electrodes on the burner

8.7 - Circulation pump replacement procedure

Operate as follows if the pump must be replaced (refer to

gure 8-8):

1.- empty the domestic hot water circuit, following the

procedure in section 8.10;

2.- disconnect the electric power supply upstream from the

appliance;

3.- access the components inside the appliance, following

section 8.2;

4.- disconnect the electric cables from the pump body.

5.- loosen the nuts “C”;

6.- extract the pump “B” outwards and replace it.

C A

020003.01.051

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Figure 8-9 - Removing the ow meter

8.8 - Domestic water ow meter

replacement procedure

Proceed as follows, making reference to gure 8-9:

1.- empty the domestic hot water circuit, following the

procedure in section 8.10;

2.- disconnect the electric power supply upstream from the

appliance;

3.- access the components inside the appliance, following

section 8.2;

4.- disconnect the cables from the ow meter (detail “B” in

gure 8-9);

5.- unscrew the tightening nuts “A”, paying attention that the

residual water from the pipes does not reach the control board;

6.- slide the ow meter “B” upwards and replace it.

Figure 8-10 - Removing the safety valve

8 - MAINTENANCE

8.9 - Safety valve replacement procedure

The safety valve (detail “A” in gure 8-10) protects the

appliance from over pressures. If it has to be replaced,

proceed as follows (refer to gure 8-10):

1.- empty the domestic hot water circuit, following the

procedure in section 8.10;

2.- access the components inside the appliance, following

section 8.2;

3.- disconnect the drain pipe from the valve to be replaced

“A”;

4.- unscrew the lower xing disk “B” of valve “A”;

5.- extract the safety valve “A” upwards and replace it.

ABA

020003.01.050

020003.01.049

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8 - MAINTENANCE

8.10 - Procedure for draining the water heater

To empty the appliance from the domestic hot water side, proceed as follows:

1.- close the main cold water supply isolation valve;

2.- open all hot and cold water taps;

3.- make sure that at least one of these is at a height below

the level of the appliance.

8.11 - Fan test mode procedure

Switch-on of the fan only can be generated, accessing the parameter 2010 situated inside the “Installer menu” (see section 7.8) and set it on FAn. To go back to normal operating conditions, set parameter 2010 again to 0FF.

8.12 - Gas burner minimum and maximum performance test mode procedure

Appliance operation can be forced to its own minimum, maximum, adjusted or ignition power. Proceed as follows:

1.- access parameter 2010 found in the “installer menu”

(see section 7.8);

2.- set the parameter 2010 at the following value:

a) LOu to force the appliance to minimum power; b) Ign to force the appliance to ignition power; a) HIgH to force the appliance to maximum power; a) rEg to force the appliance to maximum power.

4.- to end forcing, take the parameter 2010 to the 0FF

value and press the RESET key.

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Figure 8-11 - Water sensors curve

8.13 - Checking the ionisation current

In any operating status, also during verications of minimum

and maximum power stated in section 8.12, the ionisation current value can be consulted on parameter 1008 present

in the “User menu” (section 7.7). This value must be between 1,5 and 3 uA (microampere) at minimum power and between 5 and 8 uA at maximum power.

8.14 - Water temperature measurement sensor testing procedures

The temperature sensors are positioned on the appliances’ exchanger body. The electric resistance existing between the two contacts of the sensor, must correspond with that

stated in gure 8-11.

The temperature sensors are: 1001, 1002, 1003,

1005, 1006, 1007 and 1014, the positioning of

which can be veried in gures 3-1, 3-2, 3-3 and 3-4.

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8.15 - Operational wiring diagram

Figure 8-12 - 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 followon of the cables in the next page.

8 - MAINTENANCE

1001 - D.H.W. outlet temperature sensor 1 1002 - D.H.W. outlet temperature sensor

1002 (SB) - Storage tank sensor (on request)

1005 - D.H.W. outlet temperature safety sensor 2

1006 - Exhaust ue sensor 1

1007 - Cold water inlet sensor

1014 - Exhaust ue safety sensor 2 CM - Appliance control unit and ame control

CR - Remote control CR01 CR04 - Remote control CR04 DSP - Display EA - Ignition electrode

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8 - MAINTENANCE

ER - Detection electrode F (PWM) - PWM fan

F (BCU) - 5A fuse

F1 (SDC) - 1.6A power supply fuse

PB - Storage tank load aux. pump (on request)

PR - Recirculation Pump GS - Spark generator IG - Master switch

J1 - 8 pin Molex connector J12- 6 pin Molex connector J2 - 6 pin Molex connector J26- 4 pin Molex connector J3 - 10 pin Molex connector

J4 - 6 pin Stelvio connector J5 - 4 pin Molex connector J6 - 14 pin Molex connector J7- 10 pin Molex connector J9- 4 pin Molex connector PB - Storage tank pump (on request)

SDC- Connection board

TF- High limit ue gas temperature fuse TU - Domestic hot water ow meter

VG1- Gas Valve

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8.16 - Multi-wire wiring diagram

Figure 8-13 - Multi-wire wiring diagram

Key - see key gure 8-12

8 - MAINTENANCE

COLOR OF DIAGRAM CABLE

ARANCIO = ORANGE

BIANCO = WHITE BLU = BLUE

GIALLO = YELLOW GIALLO/VERDE = YELLOW/GREEN GRIGIO = GREY

MARRONE = BROWN NERO = BLACK

ROSSO = RED VERDE = GREEN

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8 - MAINTENANCE

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9 - TECHNICAL DATA

TECHNICAL DATA UM AGUADENS 16 AGUADENS 22 AGUADENS 37

Type (Type of exhaust ue/combustion air intake) B23;C13;C33;C43;C53;C63;C83;C93

Category II2H3P II2H3P II2H3P

CE type certicate (PIN) 0476CQ1097 0476CQ1097 0476CQ1097

Max. heat input NET (GROS) kW 25,5 (28,3) 32,0 (35,5) 57,8 (64,2)

Min. heat input NET (GROS) kW 3,2 (3,6) 6,0 (6,7) 12,0 (13,3)

Max. useful heat output kW 27,0 33,5 60,9

Efciency at max heat output NET (GROS) % 106 (96) 105 (95) 107 (96)

Min. heat output kW 3,30 6,14 12,85

Efciency at min heat output NET (GROS) % 103 (93) 102 (92) 107 (96)

Gas ow rate

G20 m

/h 2,70 3,38 6,11

G31 Kg/h 1,98 2,48 4,49

Gas supply pressure

G20 mbar 20 20 20

G31 mbar 37 37 37

Gas supply minimum pressure

G20 mbar 15 15 15

G31 mbar 15 15 15

Gas supply maximum pressure

G20 mbar 45 45 45

G31 mbar 45 45 45

D.H.W. adjustment range °C 40-75 40-75 40-75

D.H.W. ow rate (Δt 30°C) l/min 13,0 16,1 29,5

Domestic circuit maximum pressure bar 10 10 10

Domestic circuit minimum pressure bar 1 1 1

Minimum water ow l/min 2,5 2,5 2,5

Rated power supply voltage V 230 230 230

Rated power supply frequency Hz 50 50 50

Absorbed electric power W 169 162 235

Electric protection degree IPX4D IPX4D IPX4D

Exhaust ue and air intake pipe diameter (split) mm 80 80 80

Exhaust ue pipe max. length (split) (80) m 20 12,5 5

Air intake pipe max. length (split) (80) m 20 12,5 5

Exhaust ue pipe diameter (coaxial) mm 60/100 60/100 80/125

Exhaust ue pipe max. length (coaxial) m 10 10 10

Equivalent length of a bend m Curva a 45° = 0.5m, curva a 90° =1m

Weighted CO (0% O2 with natural gas) (EN26:2015) GROS ppm 11 19 10

Weighted NOx (0% O2 with natural gas) (EN26:2015) GROS G20 mg/kWh 20 29 16

Weighted NOx (0% O2 with natural gas) (EN26:2015) GROS G31 mg/kWh 24 34 20

CO2 (%) at minimum/maximum power

G20 % 8,5/9,0 8,5/9,0 8,3/8,7

G31 % 10/10,5 10/10,5 10,8/10,1

Exhaust ue gas maximum temperature at appliance outlet °C 90 90 90

Mass ow rate of exhaust ue gases kg/h 41,9 52,5 97,8

Head available at exhaust ue outlet Pa 60 60 60

Exhaust ue gas maximum temperature for overheating °C 90 90 90

Max. negative pressure in exhaust ue system Pa 60 60 60

Condensate maximum ow rate l/h 3,2 4,0 7,2

Condensate average acidity PH 4 4 4

Operating environment temperature °C 0 ; +50 0 ; +50 0 ; +50

Weight of the appliance kg 36 36 48

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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

Pa rameters th at can be displayed in normal operating conditions (see section 7.9)

Use menu parameters (see section 7.7)

Installer menu parameters (see section

7.8)

Installer menu parameters (see section

7.8)

Us e me nu acce ss (see section 7.7)

Installer menu access (see section 7.8)

Return to normal operation

Figure 10-1 - Command menu diagram

Key for gure 10-1

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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, move the microswitch as stated in gure 6-6 detail “B”.

11 - ENGINEERS TEST MODE

Parameter Parameter Description M.U. Setting range

Factory value

Customised

value

3001 Cascade adress (N/A)

(N/A)

(N/A) 0 (N/A)

3002 Selection type From 50 to 55 See gure 6-8

3012

Domestic hot water operating mode

0 = DO NOT USE; 1 = Storage tank with temperature sensor; 2 = Storage tank with thermostat; 3 = DO NOT USE; 4 = DO NOT USE; 5 = DO NOT USE; 6 = DO NOT USE; 7 = DO NOT USE; 8 = Instantaneous water heater;

3013 Plant ll automatic valve (N/A)

(N/A)

(N/A) 0 (N/A)

3014

Instantaneous domestic hot

water pre-heat

OFF = No pre-heat ON = With pre-heat

OFF (N/A)

3015

Maximum central heating temperature (N/A)

(N/A)

(N/A) 80 (N/A)

3016

Minimum central heating temperature (N/A)

(N/A)

(N/A) 30 (N/A)

3017 Pre-heat mode (N/A)

(N/A)

(N/A) 0 (N/A)

3018 Minimum DHW temperature

°C

From 30 to 75 40

3019 Maximum DHW temperature

°C

From 30 to 75 60

3020

Domestic hot water ow rate

sensor

0 = B; 1 = DN 8; (model 16) 2 = DN 10; 3 = DN 15; (models 22 and 37) 4 = DN 20; 5 = DN 25;

1 (16) 3 (22) 3 (37)

3021

2nd Exhaust ue sensor (1014)

(N/A)

(N/A) (N/A)

0 (N/A)

3022

Central heating minimum pressure (N/A)

(N/A)

(N/A) 0,8 (N/A)

3023 Water pressure sensor

0 = Disabled; 1 = Enabled;

0 (16) 0 (22) 0 (37)

3033 Modulating pump (N/A)

(N/A)

(N/A) 0 (N/A)

3034 Modulating pump delta T target (N/A)

(N/A)

(N/A) 15 (N/A)

3040 Antilegionella for water heater

ON = Antilegionella enable OFF = Antilegionella disabled

3041 Tank supply temperature increase

°C

From 0 to 30 0

3042 Minimal water ow

l/min

From 0 to 25,5 2,5

N/A = Not applicable

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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 compliant with the model described in the

type Test Certicate, issued by the notied body Kiwa Cermet Italia S.p.A.,

whose references are shown in the table in the TECHNICAL FEATURES

section under “CE-type certicate (PIN)” and fulls the requirements of

the following Directives: Gas Appliances, (2009/142/EC), Performance,

(92/42/EEC modied by EU Reg. 813/2013), Low Voltage, (2014/35/EU),

Electromagnetic Compatibility,

(2014/30/EU).

Product surveillance is done by the notied body according to form “C”.

(The warranty number is the same as the serial number)

This declaration is issued as established by the aforementioned Directives.

Meldola (CFC) ITALY, (Date of manufacture).

DATE OF MANUFACTURE

WARRANTY N°

GAS BOILER MODEL

12 - CE DECLARATION OF CONFORMITY

________________________

Alessandrini Arturo

General Manager

Page 70

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COSMOGAS s.r.l.

Via L. da Vinci 16 - 47014

MELDOLA (FC) ITALY

[email protected]

www.cosmogas.com