Cosmogas AGUADENS 60T/70T/100T/115T/140T/180T/210T/280T, MYDENS 60T/70T/100T/115T/140T/180T/210T/280T INSTALLATION, USE AND MAINTENANCE MANUAL (62403578 - R03 14-07-2021_UK)
Page 1
INSTALLATION, USE
AND MAINTENANCE
MANUAL
GAS CONDENSING
FREE-STANDING BOILER
MYDENS
GAS CONDENSING
FREE-STANDING HOT WATER HEATER
AGUADENS
60T
70T
100T
115T
140T
180T
210T
280T
62403578 - R03 14-07-2021_UK
Page 2
SAFETY INSTRUCTIONS
WARNING!!!
FAILURE TO COMPLY WITH THESE PROVISIONS AND REQUIREMENTS MAY
COMPROMISE THE SAFETY OF THE UNIT AND CAN RESULT IN A FIRE OR EXPLOSION CAUSING
PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH.
Installer: Read all instructions, including this manual,
before installing. Perform steps in the order given.
User: This manual is for use only by a qualied heating
installer. Refer to the User’s Information section for your
reference.
Maintenance: at least once a year the user must call a
Competent Person for routine maintenance.
If you smell gas
A - Turn o the gas supply at the gas meter;
B - Extinguish all naked ames – do not smoke or strike
matches;
C - Do not operate electrical appliances or switches such as
a light switch.
D - Open all doors and windows to ventilate the property.
E - Call the gas emergency service and follow their directions.
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 qualied and trained to service
the specic types of appliance
If an appliance is tted in a dwelling, then a carbon
monoxide detector should always be tted. There are two
types available: 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 o the appliance to provide more safety.
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.
If you can smell combustion products
1. - Switch the appliance o.
2. - Ventilate the room.
3. - Call a professionally qualied technician.
Competent Person: Competent Person is an individual
with specic, technical training in space heating systems,
domestic hot water systems, fuel gas systems and
electrical systems. This individual must have the legally
required qualications.
Flue gas/air intake:
- You are only permitted to operate this appliance with the
combustion air/ue gas system that has been specically
designed and approved.
- Do not obstruct the air intake or vent pipe terminals.
- If heater installation is provided as replacement heater,
DO NOT connect new heater to an existing ue system,
unless the ue system designer has been consulted.
- Do not restrict or seal any air intake or outlet openings
(terminals).
Hazards and Your Safety - Hot Water Can Scald! Water
temperature over 52°C can cause severe burns instantly, or
death from scalds. Children, the disabled, and the elderly
are at highest risk of being scalded; see instruction manual
before setting temperature at heater! Feel water before
bathing or showering.
Defects: If you nd any defects, you must inform the
owner of the system of the defect and the associated
hazard in writing.
When servicing heater, to avoid electric shock, disconnect
electrical supply before performing maintenance.
When servicing heater, to avoid severe burns, allow
heater to cool before performing maintenance.
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.
Correct Use:
This heater must only be used for the purpose for which
it has been expressly designed: Heating of water for
closed circuit systems for central heating.
Do not use this appliance if any part has been under
water. Immediately call a competent person to inspect
the appliance and to replace any part of the control
system and any gas control, which has been under
water.
Ensure the heater and its controls are protected from
dripping or spraying water during normal operation or
service.
Only use the heater in the combinations and with the
accessories and spares listed in this manual.
For safety and environmental reasons, the packing
materials must be properly disposed of. Any replaced
part or packaging should never be left within the reach
of children.
Installation and Modications: Only a Competent Person
must carry out the installation and calibration of the
heater. Never modify the heater or its ue gas carrying
components in any way. This heater must be properly
vented.
2
COSMOGAS60T - 280T
Page 3
SAFETY INSTRUCTIONS
CAUTION!!!
FAILURE TO COMPLY WITH THESE PROVISIONS AND REQUIREMENTS MAY
COMPROMISE THE SAFETY OF THE UNIT AND CAN RESULT IN A FIRE OR EXPLOSION CAUSING
PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH.
Installation location: The heater
must be located in an area where
leakage of the tank or connections
will not result in damage to the area
adjacent to the heater or to lower
oors of the structure. When such
locations cannot be avoided, it is
recommended that a suitable drain
pan, adequately drained, be installed
under the heater. The pan must not
restrict combustion air ow.
Installation location: The heater must
be installed on a non-combustible
surface.
In the event of a breakdown and/or
malfunction of the heater, turn o the
unit and do not make any attempt to
repair it. The heater must be serviced
by a Competent Person using original
spare parts.
Installation, modications
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
qualied technician.
The end user must have maintenance
performed on the appliance only by
competent person 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 any cleaning or maintenance,
before reconnecting the power
supply, make sure that all internal
parts are properly dry.
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.
Do not use “homemade cures” or
“heater patent medicines”. Serious
damage to the heater, personnel, and/
or property may result.
Do not use petroleum-based cleaning
or sealing compounds in the heater
system. Gaskets and seals in the
system may be damaged. This can
result in substantial property damage.
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 pipes and
gas pipes must always be checked by
a professionally qualied technician or
engineer to verify compliance with all
relevant standards, Laws and codes of
good practice.
NOTICE!
Local approval of the ue system and
the condensate connection to the public
sewer system may be required.
The local building regulations stipulating
the installation rules at the time of
installation.
When calling or writing about the heater
– Please have the heater model and
serial number from the heater rating
plate.
Any claims for damage or shortage in
shipment must be filed immediately
against the transportation company by
the consignee.
The manufacturer declines all liability,
contractual or otherwise (warranty
included), for any damage to people,
animals property or this same appliance,
caused by:
a) - incorrect installation;
b) - failure to comply with this or any
other instruction provided by the
manufacturer;
c) - failure to comply with the applicable
local and/or national regulations in
force;
d) - incorrect use of this appliance
e) - inadequate or incorrect service
f) - inadequate or incorrect maintenance.
COSMOGAS
3
60T - 280T
Page 4
CONTENTS
SAFETY INSTRUCTIONS ...................................................................................................................................2
1 - CODE REQUIREMENTS ................................................................................................................................ 7
1.1 - National laws and regulations .................................................................................................................................. 7
2 - GENERAL INFORMATION ............................................................................................................................. 8
2.1 - Presentation ............................................................................................................................................................. 8
2.2 - Overview of models .................................................................................................................................................. 8
2.3 - Accessories .............................................................................................................................................................. 9
2.4 - Manufacturer ............................................................................................................................................................ 9
2.5 - Meaning of symbols used ........................................................................................................................................ 9
2.6 - Maintenance ............................................................................................................................................................. 9
2.7 - Disposal ................................................................................................................................................................... 9
3 - MAIN COMPONENTS .................................................................................................................................. 10
4 - OPERATION ................................................................................................................................................. 18
4.1 - Operation and intended use ................................................................................................................................... 22
4.1.1 - MYDENS boiler operation and intended use ............................................................................................ 22
4.1.2 - AGUADENS hot water heater operation and intended use ...................................................................... 22
4.1.3 - Wide modulation range and maximum eciency...................................................................................... 22
4.1.4 - Primary circuit pump ................................................................................................................................. 23
4.1.5 - Central heating circuit pump ..................................................................................................................... 23
4.1.6 - Domestic hot water circuit pump ............................................................................................................... 23
4.1.7 - Hydraulic separator ................................................................................................................................... 23
4.1.8 - MYDENS boiler production of domestic hot water .................................................................................... 23
4.1.9 - Types of system ........................................................................................................................................ 23
4.2 - Precautions for installation ..................................................................................................................................... 23
4.3 - Anti-Legionella ........................................................................................................................................................ 23
5 - INSTALLATION - Place of installation ....................................................................................................... 24
5.1 - Selection of place of installation ............................................................................................................................. 24
5.1.1 - Requirements for correct ventilation ......................................................................................................... 25
5.1.2 - Preventing contamination of combustion air ............................................................................................. 25
6 - INSTALLATION - Setup ............................................................................................................................... 26
6.1 - Setup ...................................................................................................................................................................... 26
6.1.1 - Moving the boiler ....................................................................................................................................... 26
6.1.2 - Opening the package ................................................................................................................................ 26
6.1.3 - Lifting the boiler ......................................................................................................................................... 26
7 - INSTALLATION - Minimum distances to be observed ............................................................................. 27
7.1 - Dimensions and minimum distances to be observed ............................................................................................. 27
8 - INSTALLATION - Dimensions and centre space distances - MYDENS boiler ....................................... 28
9 - INSTALLATION - Dimensions and centre space distances - AGUADENS hot water heater ................ 30
10 - INSTALLATION - Plumbing connections - MYDENS boiler ................................................................... 32
10.1 - MYDENS boiler plumbing and gas connections .................................................................................................. 32
10.2 - MYDENS boiler safety valve (responsibility of the installer) ................................................................................ 32
10.3 - Examples of installation of MYDENS boiler ......................................................................................................... 32
10.4 - Safety relief valve ................................................................................................................................................. 34
10.5 - Connection of expansion tank .............................................................................................................................. 35
10.6 - Delivery and return ............................................................................................................................................... 35
10.7 - MYDENS boiler water supply ............................................................................................................................... 35
10.7.1 - Recommendations on characteristics of water in the system ................................................................. 35
10.7.2 - For correct operation of the system make sure that: ............................................................................. 35
10.7.3 Water treatment in domestic heating systems .......................................................................................... 36
10.8 - MYDENS boiler heat circuit outlet ........................................................................................................................ 36
10.9 - MYDENS boiler low-temperature systems (or underoor heating) ...................................................................... 36
10.10 - Manifold sensor .................................................................................................................................................. 36
10.11 - MYDENS boiler characteristic curve of head losses .......................................................................................... 37
11 - INSTALLATION - Plumbing connections - AGUADENS hot water heater ............................................38
11.1 - AGUADENS hot water heater plumbing and gas connections ............................................................................. 38
11.2 - AGUADENS hot water heater safety valve (responsibility of the installer) ........................................................... 38
11.3 - AGUADENS hot water heater examples of installation ........................................................................................ 38
11.4 - Safety relief valve ................................................................................................................................................. 39
11.5 - Expansion tank ..................................................................................................................................................... 40
11.6 - Circulation pump .................................................................................................................................................. 40
11.7 - Minimum ow rate to the water heater ................................................................................................................. 41
11.8 - Precautions against scalds ................................................................................................................................... 41
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COSMOGAS60T - 280T
Page 5
CONTENTS
11.9 - Water quality ......................................................................................................................................................... 41
12 - INSTALLATION - Disposal of condensate ............................................................................................... 42
12.1 - Condensate outlet ................................................................................................................................................ 42
13 - INSTALLATION - Electrical connections ................................................................................................. 43
13.1 - Electrical connections: details .............................................................................................................................. 43
13.1.1 - Connecting power supply cable .............................................................................................................. 43
13.1.2 – Choosing the room thermostat/chronothermostat .................................................................................. 44
13.1.3 - Connecting the room thermostat/chronothermostat ................................................................................ 44
13.1.4 - Installing the outdoor temperature sensor .............................................................................................. 44
13.1.5 - Connection board 885 IF ........................................................................................................................ 45
13.1.6 - Alarm contact .......................................................................................................................................... 45
13.2 - Connecting MYDENS boiler to storage tank ........................................................................................................ 45
13.2.1 - Precedence to production of DHW ......................................................................................................... 46
13.3 - Connecting AGUADENS hot water heater to storage tank .................................................................................. 46
13.4 - Cascading appliances .......................................................................................................................................... 49
14 - INSTALLATION - Flue gas outlet and air intake pipe ............................................................................. 50
14.1 - Burned gas exhaust and combustion agent air intake pipe ................................................................................. 50
14.1.1 - Type of intake/exhaust B23 and B23P .................................................................................................... 50
14.1.2 - Split system ............................................................................................................................................. 51
15 - INSTALLATION - External cover .............................................................................................................. 52
15.1 - Installation of external cover for models 60T - 70T - 100T - 115T - 140T ............................................................ 52
15.2 - Installation of external cover for models 180T - 210T - 280T ............................................................................... 56
16 - START-UP ................................................................................................................................................... 61
16.1 - Start-up ................................................................................................................................................................ 61
16.1.1 - Instructions to the user ............................................................................................................................ 61
16.1.2 - Filling the condensate outlet siphon ........................................................................................................ 61
16.1.3 - Filling the central heating system ............................................................................................................ 61
16.2 - General recommendations regarding the gas supply .......................................................................................... 62
16.3 - Type of gas for which the appliance is set. .......................................................................................................... 62
16.4 - Conversion of boiler models 60T and 70T from one type of gas to another ........................................................ 63
16.5 - Conversion of boiler models 100T to 280T from one type of gas to another ....................................................... 65
16.6 - Ignition .................................................................................................................................................................. 67
16.6.1 - MYDENS boiler ignition .......................................................................................................................... 67
16.6.2 - AGUADENS hot water heater ignition ..................................................................................................... 67
16.7 - Controlling the supply gas pressure and any adjustments ................................................................................... 67
16.8 - Controlling the level of CO2 and any adjustments ............................................................................................... 68
16.8.1 - Check the CO2 content and make any necessary adjustment on boiler models 60T and 70T .............. 68
16.8.2 - Check the CO2 content and make any necessary adjustment on boiler models 100T to 280T ............. 69
16.9 - Check boiler power .............................................................................................................................................. 69
16.10 - Minimum water ow rate .................................................................................................................................... 69
17 - USE ............................................................................................................................................................. 70
17.1 - Water pressure check .......................................................................................................................................... 70
17.1.1 - MYDENS boiler checking water pressure ............................................................................................... 70
17.1.2 - AGUADENS hot water heater checking system pressure ...................................................................... 70
17.2 - General information .............................................................................................................................................. 71
17.3 - Display ................................................................................................................................................................. 71
17.4 - Ignition and switch-o procedure ......................................................................................................................... 71
17.5 - AGUADENS hot water heater adjusting the temperature .................................................................................... 71
17.6 - MYDENS boiler adjusting the domestic hot water ............................................................................................... 71
17.7 - MYDENS boiler adjusting the central heating ...................................................................................................... 71
17.8 - Thermostatic adjustment of central heating ......................................................................................................... 71
17.9 - Climate control ..................................................................................................................................................... 72
17.9.1 - Climate control: setting the parameters .................................................................................................. 72
17.9.2 - Climate control: switching the central heating service on and o ........................................................... 72
17.10 - Time settings for the various functions ............................................................................................................... 72
17.11 - Pump anti-blocking ............................................................................................................................................. 72
17.12 - Anti-freeze protection ......................................................................................................................................... 72
17.13 - Energy Saving .................................................................................................................................................... 72
17.14 - “User menu” ....................................................................................................................................................... 74
17.15 - “Installer menu” .................................................................................................................................................. 75
17.16 - Diagnostics ......................................................................................................................................................... 76
17.16.1 - Diagnostics: lockouts “Loc” ................................................................................................................... 77
17.16.2 - Diagnostics: errors “Err” ........................................................................................................................ 79
COSMOGAS
5
60T - 280T
Page 6
CONTENTS
18 - MAINTENANCE .......................................................................................................................................... 81
18.1 - General recommendations ................................................................................................................................... 81
18.1.1 - Gas leak check ....................................................................................................................................... 81
18.1.2 - Checking the condition of the air intake and ue exhaust ducts ............................................................. 81
18.1.3 - Checking the system water pressure ...................................................................................................... 81
18.1.4 - Checking the ignition and detection electrodes ..................................................................................... 81
18.2 - Dismantling of cover and access to internal components .................................................................................... 82
18.3 - Dismantling the burner fan assembly ................................................................................................................... 82
18.4 - Cleaning the burner and the primary heat exchanger, ue gas side .................................................................... 83
18.4.1 - Heat insulation devices ........................................................................................................................... 85
18.5 - Correct positioning of ignition and ionisation electrodes ..................................................................................... 85
18.6 - Cleaning of air intake lter .................................................................................................................................... 86
18.7 - Maintenance and cleaning of condensate outlet system ..................................................................................... 86
18.8 - Connection of Display to other burners ................................................................................................................ 87
18.9 - How to move a control board ............................................................................................................................... 88
18.10 - Emptying the boiler ............................................................................................................................................ 90
18.11 - Minimum and maximum power .......................................................................................................................... 90
18.12 - Checking the ionisation current .......................................................................................................................... 90
18.13 - Checking combustion eciency ......................................................................................................................... 90
18.14 - Water temperature measurement sensors ......................................................................................................... 91
18.15 - Outdoor temperature sensor .............................................................................................................................. 91
18.16 - Multi-wire wiring diagram for models 60T and 70T ............................................................................................ 92
18.17 - Multi-wire wiring diagram for models 100T, 115T, 140T, 180T, 210T and 280T ................................................. 94
19 - TECHNICAL DATA ..................................................................................................................................... 98
19.1 - MYDENS TECHNICAL DATA ............................................................................................................................... 98
19.2 - AGUADENS TECHNICAL DATA ........................................................................................................................ 102
20 - FORCED MENU ........................................................................................................................................ 106
21 - COMMAND MENU DIAGRAM ................................................................................................................. 108
22 - MYDENS PRODUCT FICHE .................................................................................................................... 110
23 - AGUADENS PRODUCT FICHE ............................................................................................................... 112
24 - BOILER EU DECLARATION OF COMPLIANCE ..................................................................................... 114
25 - WATER HEATER EU DECLARATION OF COMPLIANCE ...................................................................... 115
6
COSMOGAS60T - 280T
Page 7
1 - CODE REQUIREMENTS
1.1 - National laws and regulations
- M.D. no.37 dated 22/01/2008 (former Law no.46 dated
05/03/90)
- Law no.10 dated 09/01/91
- Presidential Decree no.412 dated 26/08/93
- Presidential Decree no.551 dated 21/12/99
- Legislative Decree no.192 dated 19/08/05
- Legislative Decree no.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
qualied person, in accordance with the relevant clauses of
applicable standards and recommendations. 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.
- 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 - Specication.
- UK Health and safety at work Act.
- All relevant Building Regulations.
- Local Water Byelaws.
- Water Regulations.
- Health & Safety legislation.
Failure to install this appliance correctly could lead to
prosecution. It is in your own interest and in the interest 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.
- BS 5546:2010 - Specication 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) specication 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) specication.
- 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 corrugated stainless 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 the Department of the
Environment and Building Standards Regulations.
COSMOGAS
7
60T - 280T
Page 8
2 - GENERAL INFORMATION
2.1 - Presentation
Congratulations! You have purchased one of the best products on the market.
Each individual part is proudly designed, manufactured, tested and assembled within the COSMOGAS
facilities, thus guaranteeing the best quality control.
2.2 - Overview of models
XXXXDENS XXXTXX
v = Appliance with 2-way valves
s = Appliance with stainless steel manifold (*)
sv = Appliance with 2-way valves and stainless steel manifold (*)
c = Appliance with carbon steel manifold
cv = Appliance with 2-way valves and carbon steel manifold
“60T” = Free-standing boiler with maximum heat input of 60 kW;
“70T” = Free-standing boiler with maximum heat input of 69.9 kW;
“100T” = Free-standing boiler with maximum heat input of 100 kW;
“115T” = Free-standing boiler with maximum heat input of 115 kW;
“140T” = Free-standing boiler with maximum heat input of 140 kW;
“180T” = Free-standing boiler with maximum heat input of 180 kW;
“210T” = Free-standing boiler with maximum heat input of 210 kW;
“280T” = Free-standing boiler with maximum heat input of 280 kW;
“MYDENS” = Internal gas condensing boiler with premixed burner with low
emissions of pollutants.
“AGUADENS” = Internal gas condensing hot water heater with premixed burner
with low emissions of pollutants.
(*) The AGUADENS models have a stainless steel manifold tted as standard.
8
COSMOGAS60T - 280T
Page 9
2 - GENERAL INFORMATION
2.3 - Accessories
The accessories, in some models, could be not supplied
with the appliance.
Quantity No.
N° 1
N° 1 SENSOR 10K D6X45 L=2500 T
N° 1 EXTERNAL SENSOR
N° 4 ADJUSTABLE FEET
N° 1 10KG SACK OF GRANULATE CONDENSATE NEUTRALISER.
N° 1
N° 2 REDUCTION 2P NPT - 1P1/2 GAS
N° 2 FLANGE EN 1092-1-13 DN65 PN16 NPT
GAS CONVERSION KIT NATURAL GAS-LPG 60T, 100T AND 115T.
GAS CONVERSION KIT NATURAL GAS-LPG 70T, 140T, 180T, 210T AND 280T.
REDUCTION 1P NPT - 1P GAS
REDUCTION 1P1/4 NPT - 1P1/4 GAS
Description Figure
2.4 - Manufacturer
COSMOGAS srl
Via L. da Vinci 16
47014 - Meldola (FC) Italy
Tel. (+39) 0543 498383
Fax. (+39) 0543 498393
www.cosmogas.com
info@cosmogas.com
Only in models 60T, 70T, 100T, 115T and 140T
Only in models 180T, 210T and 280T
Only in models 60T, 70T, 100T, 115T and 140T
Only in models 180T, 210T and 280T
2.5 - Meaning of symbols used
WARNING!
Danger of electric shocks. If these warnings are not heeded it
can jeopardise correct operation of the boiler or cause serious
injury or damage to people, animals or things.
WARNING!
Generic danger. Failure to comply with these warnings may
jeopardise the working order of the appliance or cause serious
damage or injury to persons, animals or things.
Important indication symbol
2.6 - Maintenance
A regular annual maintenance check on the appliance is
advised for the following reasons:
- to maintain high eciency and reduce fuel consumption;
- to achieve a high level of operating safety;
- to maintain a high level of environmental combustion
compatibility;
2.7 - Disposal
The crossed wheelie bin symbol means that the product
must not be thrown away in the ordinary rubbish bin (i.e. in
with “mixed urban rubbish”). It must be dealt with separately,
in order to undergo suitable operations for it to be reused or
treated to remove and safely dispose of any substances that
are dangerous for the environment. This will enable all the raw
materials to be recycled. The user is responsible for getting
rid of the boiler at the end of its life, delivering it to a recycling
centre run by the local authority or city hygiene companies,
or, when he/she buys a new boiler, giving the product that has
been replaced to the dealer, who is obliged to take it under
the terms of EU Directive 2012/19/EU.
For further information regarding correct decommissioning
of these appliances, users can contact the public service in
charge or retailers.
Oer your customer a scheduled maintenance contract.
COSMOGAS
9
60T - 280T
Page 10
3 - MAIN COMPONENTS
5
12 13
134 2
15 1614
17
9
18
7
1 - Air/gas mixing group
2 - Gas valve
3 - Air inlet manifold
4 - Hot water safety thermostat
5 - Hot water temperature sensor
6 - ----------
7 - Hot water outlet pipe
8 - ----------
9 - Heat exchanger
10 - ----------
020009.01.018
11 - ----------
12 - Stopper (not present)
13 - Water pressure sensor (present in burner 1 MASTER)
14 - Sparks generator
15 - Ignition cables
16 - Water ow rate gauge
17 - 2-way motorised valve (on request)
18 - Water inlet pipe
39 - ----------
Figure 3-1 - Internal components of models 60T, 70T, 100T, 115T, 140T, 180T, 210T and 280T
10
COSMOGAS60T - 280T
Page 11
3 - MAIN COMPONENTS
21 19
27 28
23
25
26
020009.01.028_a
32 33 31
25
19 - Burner
20 - ----------
21 - Detection electrode
22 - ----------
23 - Burner pilot light
24 - ----------
25 - Fan
26 - Water inlet temperature sensor
27 - LH ignition electrode
28 - RH ignition electrode
29 - ---------30 - ----------
31 - Flue gases check valve
32 - Check valve magnet
33 - Check valve sensor
7
020009.01.028
18
Figure 3-2 - Internal components of models 60T, 70T, 100T, 115T, 140T, 180T, 210T and 280T
COSMOGAS
11
60T - 280T
Page 12
3 - MAIN COMPONENTS
10
12
9
6
11 14
13
35
26
25
24
020014.01.031
17
36
37
38
7 4
5
3 2
19
20
21
1
1 - Adjustable feet
2 - Exhaust gases condensate outlet pipe
3 - Condensate neutraliser
4 - Burner “1” (MASTER)
5 - Condensate outlet pipe
6 - Gas inlet pipe
7 - Hot water outlet pipe
8 - ----------
9 - Air intake
10 - Passage of electrical wires
11 - Air intake lter
12 - Exhaust gases outlet
13 - Board 885 IF (on request)
14 - Electrical connections
Figure 3-3 - Internal components of models 60T and 70T
15 - ---------16 - ----------
17 - Control panel
18 - ----------
19 - Top front casing
20 - “Burner 1” command and control board
21 - Bottom front casing
24 - Pressure switch against outlet blockage
25 - Electrical connections board
26 - Water outlet manifold temperature sensor
35 - Air vent valve
36 - Water outlet
37 - Water inlet
38 - Drain valve
12
COSMOGAS60T - 280T
Page 13
3 - MAIN COMPONENTS
31
22
33
30
28
29
27
23
BURNER 1
(Master)
020014.01.032
22 - Top cover
23 - General ON/OFF switch
27 - Fan cover
28 - Exhaust gases temperature safety fuse (red connector)
29 - Exhaust gases temperature sensor (blue connector)
(1006)
30 - Exhaust gases outlet manifold
31 - Water inlet pipe
32 - ----------
33 - Condensate level sensor
34 - ----------
39 - Primary heat exchanger temperature fuse
39
Figure 3-4 - Internal components of models 60T and 70T
COSMOGAS
13
60T - 280T
Page 14
3 - MAIN COMPONENTS
10
12
9
6
8
11 14
13
35
26
36
25
24
020014.01.033
17
18
19
20
37
38
7
1 - Adjustable feet
2 - Exhaust gases condensate outlet pipe
3 - Condensate neutraliser
4 - Burner “1” (MASTER)
5 - Condensate outlet pipe
6 - Gas inlet pipe
7 - Hot water outlet pipe
8 - Burner “2” (SLAVE)
9 - Air intake
10 - Passage of electrical wires
11 - Air intake lter
12 - Exhaust gases outlet
13 - Board 885 IF (on request)
14 - Electrical connections
4
5
3 2
15 - ---------16 - ----------
17 - Control panel
18 - “Burner 2” command and control board
19 - Top front casing
20 - “Burner 1” command and control board
21 - Bottom front casing
24 - Pressure switch against outlet blockage
25 - Electrical connections board
26 - Water outlet manifold temperature sensor
35 - Air vent valve
36 - Water outlet
37 - Water inlet
38 - Drain valve
21
1
Figure 3-5 - Internal components of models 100T, 115T and 140T
14
COSMOGAS60T - 280T
Page 15
3 - MAIN COMPONENTS
31
31
22
33
30
39
39
28
28
29
29
27
27
23
BURNER 2
BURNER 1
(Master)
020014.01.004
22 - Top cover
23 - General ON/OFF switch
27 - Fan cover
28 - Exhaust gases temperature safety fuse (red connector)
29 - Exhaust gases temperature sensor (blue connector)
(1006)
30 - Exhaust gases outlet manifold
31 - Water inlet pipe
32 - ----------
33 - Condensate level sensor
34 - ----------
39 - Primary heat exchanger temperature fuse
Figure 3-6 - Internal components of models 100T, 115T and 140T
COSMOGAS
15
60T - 280T
Page 16
3 - MAIN COMPONENTS
5
3
2
1
35
6
8
7
4
7
26
36
8
7
9
10
11
12
13
14
25
24
020013.01.014
17
18
20
19
18
37
8
7
38
1 - Adjustable feet
2 - Exhaust gases condensate outlet pipe
3 - Condensate neutraliser
4 - Burner “1” (MASTER)
5 - Condensate outlet pipe
6 - Gas inlet pipe
7 - Hot water outlet pipe
8 - Burner “2”-”3”-”4” (SLAVE)
9 - Air intake
10 - Passage of electrical wires
11 - Air intake lter
12 - Exhaust gases outlet
13 - Board 885 IF (on request)
14 - Electrical connections
18
21
15 - ---------16 - ----------
17 - Control panel
18 - Burner “2”-”3”-”4” command and control board
19 - Top front casing
20 - “Burner 1” command and control board
21 - Bottom front casing
24 - Pressure switch against outlet blockage
25 - Electrical connections board
26 - Water outlet manifold temperature sensor
35 - Air vent valve
36 - Water outlet
37 - Water inlet
38 - Drain valve
Figure 3-7 - Internal components of models 180T, 210T and 280T
16
COSMOGAS60T - 280T
Page 17
3 - MAIN COMPONENTS
31
31
31
31
22
28
29
28
33
29
28
30
39
39
39
39
28
29
29
27
27
27
27
23
BURNER 2
(Not present in
models 180T and
210T)
BURNER 1
(Master)
BURNER 3
BURNER 4
22 - Top cover
23 - General ON/OFF switch
27 - Fan cover
28 - Exhaust gases temperature safety fuse (red connector)
29 - Exhaust gases temperature sensor (blue connector)
(1006)
30 - Exhaust gases outlet manifold
020013.01.010
31 - Water inlet pipe
32 - ----------
33 - Condensate level sensor
34 - ----------
39 - Primary heat exchanger temperature fuse
Figure 3-8 - Internal components of models 180T, 210T and 280T
COSMOGAS
17
60T - 280T
Page 18
4 - OPERATION
Figure 4-1 Key:
1 - Air intake
2 - Exhaust gases outlet
3 - Air vent valve
4 - Sealed chamber
6 - Water outlet temperature safety thermostat
7 - Water outlet temperature sensor
8 - Water pressure gauge
9 - Exhaust gases temperature sensor
10 - Exhaust gases temperature safety fuse
12 - Pre-mixed burner
13 - Ignition electrodes
14 - Sparks generator
15 - Water inlet temperature sensor
16 - Fan
17 - Back ue preventer valve
20 - Gas valve
22 - Detection electrode
24 - VRC heat exchanger
25 - Water outlet
26 - Water inlet
27 - Gas inlet
28 - Pressure switch against outlet blockage
29 - Condensate level sensor
30 - Condensate outlet
31 - Condensate outlet siphon
36 - Condensate neutraliser
47 - Water ow rate gauge
51 - Primary heat exchanger temperature fuse
Figure 4-1 - Plumbing operating diagram for models 60T and 70T
18
COSMOGAS60T - 280T
Page 19
4 - OPERATION
Figure 4-2 Key:
1 - Air intake
2 - Exhaust gases outlet
3 - Air vent valve
4 - Sealed chamber
6 - Water outlet temperature safety thermostat
7 - Water outlet temperature sensor
8 - Water pressure gauge
9 - Exhaust gases temperature sensor
10 - Exhaust gases temperature safety fuse
12 - Pre-mixed burner
13 - Ignition electrodes
14 - Sparks generator
15 - Water inlet temperature sensor
16 - Fan
17 - Back ue preventer valve
20 - Gas valve
22 - Detection electrode
24 - VRC heat exchanger
25 - Water outlet
26 - Water inlet
27 - Gas inlet
28 - Pressure switch against outlet blockage
29 - Condensate level sensor
30 - Condensate outlet
31 - Condensate outlet siphon
33 - Manifold outlet temperature sensor
36 - Condensate neutraliser
47 - Water ow rate gauge
48 - 2-way motorised valve (on request)
51 - Primary heat exchanger temperature fuse
Figure 4-2 - Hydraulic operating diagram for models 100T, 115T and 140T
COSMOGAS
19
60T - 280T
Page 20
4 - OPERATION
Figure 4-3 Key:
1 - Air intake
2 - Exhaust gases outlet
3 - Air vent valve
4 - Sealed chamber
6 - Water outlet temperature safety thermostat
7 - Water outlet temperature sensor
8 - Water pressure gauge
9 - Exhaust gases temperature sensor
10 - Exhaust gases temperature safety fuse
12 - Pre-mixed burner
13 - Ignition electrodes
14 - Sparks generator
15 - Water inlet temperature sensor
16 - Fan
17 - Back ue preventer valve
20 - Gas valve
22 - Detection electrode
23 - Inlet and outlet manifold
24 - VRC heat exchanger
25 - Water outlet
26 - Water inlet
27 - Gas inlet
28 - Pressure switch against outlet blockage
29 - Condensate level sensor
30 - Condensate outlet
31 - Condensate outlet siphon
33 - Manifold outlet temperature sensor
36 - Condensate neutraliser
47 - Water ow rate gauge
48 - 2-way motorised valve (on request)
50 - Drain valves
51 - Primary heat exchanger temperature fuse
Figure 4-3 - Hydraulic operating diagram for models 180T and 210T
20
COSMOGAS60T - 280T
Page 21
4 - OPERATION
Figure 4-4 Key:
1 - Air intake
2 - Exhaust gases outlet
3 - Air vent valve
4 - Sealed chamber
6 - Water outlet temperature safety thermostat
7 - Water outlet temperature sensor
8 - Water pressure gauge
9 - Exhaust gases temperature sensor
10 - Exhaust gases temperature safety fuse
12 - Pre-mixed burner
13 - Ignition electrodes
14 - Sparks generator
15 - Water inlet temperature sensor
16 - Fan
17 - Back ue preventer valve
20 - Gas valve
22 - Detection electrode
23 - Inlet and outlet manifold
24 - VRC heat exchanger
25 - Water outlet
26 - Water inlet
27 - Gas inlet
28 - Pressure switch against outlet blockage
29 - Condensate level sensor
30 - Condensate outlet
31 - Condensate outlet siphon
33 - Manifold outlet temperature sensor
36 - Condensate neutraliser
47 - Water ow rate gauge
48 - 2-way motorised valve (on request)
50 - Drain valves
51 - Primary heat exchanger temperature fuse
Figure 4-4 - Hydraulic operating diagram for model 280T
COSMOGAS
21
60T - 280T
Page 22
4 - OPERATION
4.1 - Operation and intended use
4.1.1 - MYDENS boiler operation and
intended use
The MYDENS product is a gas condensing boiler, designed
for the production of central heating. It can also be used for
the production of domestic hot water but must be connected
to an appropriate storage tank (see gure 10-2). Any other
use is forbidden.
The maximum power for domestic hot water service is always
guaranteed in that the boiler gives priority to that service.
Follow the procedure given in section 17.6 to adjust the
domestic hot water temperature
The central heating system can be made with heating
elements operating in a temperature range of 30°C to 80°C
The boiler can be connected to a room thermostat, an external
sensor or a 0-10 VDC analogue input.
This boiler must be connected to a central heating and
domestic hot water production system with power demanded
that is compatible with the characteristics of the boiler itself.
4.1.2 - AGUADENS hot water heater
operation and intended use
The AGUADENS product is a condensing gas boiler which
must be connected to a storage tank for the production of
domestic hot water (see gure 11-1).
Any other use is forbidden.
4.1.3 - Wide modulation range and
maximum eciency
Depending on the load demanded by the system, the boiler’s
management program can gradually switch on each individual
heating element at minimum power (see gure 4-5). After
which, if the load demanded by the system increases, all the
heating elements gradually increase the power delivered.
In this way modulated power from a minimum of 14 kW to a
maximum that corresponds to the architecture of the boiler can
be obtained (gure 4-5 shows a 280T module with 4 heating
elements), with consequent maintaining of maximum eciency
throughout the whole range of modulation.
When the boiler is connected to an external sensor, it always
works at maximum eciency (see section 17.9).
Figure 4-5 - Modulation of model 280T boiler
22
COSMOGAS60T - 280T
Page 23
4 - OPERATION
This system allows the delivery temperature to be managed
automatically depending on the outdoor temperature. An
example of this in operation is shown in the form of a graph in
gure 4-6. The graph shows an example in which the delivery
and return temperatures are 55°C and 43°C respectively,
and the outdoor temperature is 0°C. The external sensor
commands modulation of the boiler, gradually reducing the
delivery temperature and optimising eciency. Eciency
changes from 97% when the outdoor temperature is -15°C
to 105.8% with outdoor temperature of 0°C and up to 109%
with outdoor temperature of 20°C.
4.1.4 - Primary circuit pump
The boiler is expressly manufactured without an internal pump
in order to give the installer the option of being able to connect
any pump, even a modulating one. In gures 10-1 and 10-2
the primary circuit pump is detail “36”. When choosing this
pump the designer must check the system features as well
as the details in section 10.11.
4.1.5 - Central heating circuit pump
The central heating circuit pump, detail “19” in gures 10-1 and
10-2, is not supplied to give the installer the option of being
able to connect any pump, even a modulating one. When
choosing this pump the designer must check the features of
the system.
4.1.6 - Domestic hot water circuit pump
The domestic hot water circuit pump, detail “28” in gure
10-2 and detail “36” in gure 11-1, is not supplied to give the
installer the option of being able to connect any pump, even a
modulating one. When choosing this pump the designer must
check the features of the system.
4.1.8 - MYDENS boiler production of
domestic hot water
For the production of domestic hot water a storage tank must
be connected following the diagram in gure 10-2.
The temperature of the domestic hot water is adjusted
following the procedure in section 17.6.
4.1.9 - Types of system
The following types of system can be set up with this appliance:
- System solely for central heating (see gure 10-1)
- System solely for the production of domestic hot water (see
gure 11-1)
- System for central heating and the production of domestic
hot water (see gure 10-2)
4.2 - Precautions for installation
For the boiler to work well, respect the following directions:
This appliance must be connected to a central heating
system and if need be to a domestic hot water distribution
network, compatible with the features, performance and
power of the appliance itself.
Check gures 7-1 and 7-2 regarding minimum distances
to be observed for installation and future maintenance.
4.3 - Anti-Legionella
MYDENS (when connected to a storage tank) and AGUADENS
appliances do not have anti- legionella protection:
It will be the responsibility of the installer to keep the
temperature of the storage tank at not less than 60°C to ensure
disinfection or else to use equivalent systems.
4.1.7 - Hydraulic separator
If the system must be served by a water ow rate that is
higher than the pump can deliver, a hydraulic separator must
be inserted between the boiler and the system (see gures
10-1 and 10-2, detail “20”).
Figure 4-6 - Example of diagram of eciency / delivery and return temperature / outdoor temperature,
for a home, in a very cold area and a system with radiators.
COSMOGAS
23
60T - 280T
Page 24
B
D
5 - INSTALLATION - Place of installation
5.1 - Selection of place of installation
WARNING! Do not store any inammable
material in the boiler’s immediate vicinity.
WARNING! If installed in rooms with a thin oor,
a resonating noise could be generated. The installation
of noise-reduction elements is required.
WARNING! Do not install the boiler on carpet.
WARNING! The boiler must be installed in a
room in which there is a supply of air for ventilation
and combustion, regardless of whether it is taken
from outside (sealed combustion) or from inside
(combustion in ventilated room).
WARNING! Inadequate ventilation of the boiler
can cause elevated air temperatures.
WARNING! Make sure that the intake and
outlet openings are the right size and that there are no
obstructions and blockages. If the problem cannot be
resolved, do not start up the boiler. Please keep in mind
these restrictions and the risks they may cause to the
operator.
WARNING! Liquied Petroleum Gas (LPG) - The
installation needs particular attention: LPG boilers
must not be installed in trenches, cellars or similar
rooms in which the gas, which is heavier than air, could
hang. LPG powered boilers must not be installed in
places below oor level or basements. If these remarks
are not respected, explosions could result and cause
serious injury to people, death or enormous material
damage.
WARNING! Do not let too much dust accumulate
on the boiler.
WARNING! The boiler must only be installed on
a solid oor, which takes its weight and is level.
Before installing the appliance, the central heating system
and, if necessary, the domestic hot water system must be
washed thoroughly in order to remove any residues or
impurities which could compromise the working order of
the boiler.
This boiler is not designed to be installed in the open
air, it must not be exposed to temperatures below 0.5°C
or above 50°C. Choose a place inside the building or
somewhere sheltered from weather such as rain, wind,
sun and, above all, frost.
The minimum return temperature is 20°C. Lower return
temperatures are not acceptable by the appliance.
This appliance must be installed in a place where
water leakages from the appliance itself, from the joints
between the pipes or from any drainage from the safety
valve, cannot cause damage to materials or items below
it.
Choose the room and suitable position for installation,
taking into account the following factors:
- connection to smoke outlet/air intake ducts;
- connection to gas adduction duct;
- connection of the water supply;
- connection to the central heating system;
- connection to domestic hot water system (where present);
- electric connection;
- connection to outlet for condensate produced by the
boiler;
- electric connection of the room thermostat;
- connection to safety valve outlet;
- connection to the outdoor temperature sensor (where
applicable);
- room ventilation.
020010.01.011
A
C
020010.01.012
Figure 5-1 - Undoing transport pallet screws
24
COSMOGAS60T - 280T
Page 25
5 - INSTALLATION - Place of installation
5.1.1 - Requirements for correct ventilation
The plant room MUST have a properly sized ventilation openings.
To ensure proper ventilation for combustion, high and low level
ventilation shall be installed. Where the appliance is installed
in an open-ue (B23) conguration, ventilation shall be directly
to outside andthe free area of openings shall be as detailed in
gure 5-2.
Room sealed appliances (type C) should be provided with
ventilation with free area as detailed in gure 5-2.
Low level ventilation shall be provided as low as practicable and
be within 1 m of the plant room oor for natural gas installations
and within 250 mm of the oor for LPG installations.
Further guidance on ventilation provision including the use
of mechanical ventilation systems can be found within IGEM/
UP/10 Edition 4.
NOTE 1: For LPG installations, ventilation must be be within 250 mm from oor
level.
NOTE 2: At least 20% of low-level ventilation allowance to be below 1000 mm
from oor level.
NOTE 3: At least 20% of high-level ventilation allowance to be above 85% of
maximum room height.
NOTE 4: Operation <50% of time = 2cm2/kW (total net input);
Operation 50 - 75% of time = 3 cm2/kW (total net input);
Operation >75% of time = 4 cm2/kW (total net input).
NOTE 5: Operation <50% of time = 4 cm2/kW (total net input);
Operation 50 - 75% of time = 5 cm2/kW (total net input);
Operation >75% of time = 6 cm2/kW (total net input).
Figure 5-2 Example of ventilation
WARNING!
pressure in the heating unit. For this reason you must
take into account the presence of any outlet fans, ceiling
fans, dryers, compressors, air heating units, etc. that
might take air away from the boiler.
WARNING!
removal of air from the heating unit might reduce the
ventilation required for combustion and/or cause low
pressure in the ventilation system. Escapes of exhaust
gases from the ventilation system in an occupied
habitable room can cause a very dangerous situation
which must be corrected immediately.
There must never be negative
Extractors or similar devices for the
5.1.2 - Preventing contamination of
combustion air
Do not locate extractor and/or exhaust gases outlet terminals
in rooms where the combustion air may be contaminated.
WARNING! Contaminated fuel air can damage
the boiler
Make sure that the combustion air does not contain any of
the following contaminating agents:
Products that might contaminate the fuel air:
.
COSMOGAS
- Chlorinated waxes/cleaners;
- Products with a high content of ammonia or other chemical
agents (products for beauty salons);
- Chlorine-based swimming pool chemical;
- Calcium chloride used for thawing;
- Sodium chloride used for water softening;
- Refrigerant leaks (refrigeration cycle machines such as heat
pumps and air conditioners);
- Paint or varnish removers;
- Hydrochloric acid/muriatic acid;
- Cements and glues;
- Antistatic fabric softeners used in clothes dryers;
- Chlorine-type bleaches, detergents and cleaning solvents
found in household laundry rooms;
- Adhesives used to fasten building products and other similar
products;
25
60T - 280T
Page 26
6 - INSTALLATION - Setup
6.1 - Setup
To install the boiler correctly and easily, the following steps
must be scrupulously followed.
6.1.1 - Moving the boiler
AA
B
020021.01.009
MIN
1 m
WARNING! Use trolleys suitable for the type of
boiler to move it. Not doing this could cause serious
harm.
Position the boiler in the area selected for installation, moving
it using the pallet it is xed to, taking care to keep it vertical
without making any sharp movements that might cause it to
overturn.
To remove the boiler from the pallet, undo the front (detail “C”
in gure 5-1) and rear (detail “D” in gure 5-1) xing screws.
6.1.2 - Opening the package
The boiler is supplied in a cardboard package, xed to the
pallet for transportation. Be careful when opening it, take the
cardboard box o by lifting it upwards, after detaching it from
the pallet.
6.1.3 - Lifting the boiler
For convenience during installation, a rod is provided (detail
“A” in gure 6-1) which enables the boiler to be lifted.
remove the top cover as in section 18.2;
hook lifting cables, “B” in gure 6-1, onto the rod, “A” in
gure 6-1 and lift the heating unit;
A
020021.01.010
be suitable for the purpose envisaged. In particular,
they must be able to bear the weight of the boiler which
you can check in section 19.
WARNING! The cables and lifting system must
Figure 6-1 - Lifting system
A
020010.01.013
install the adjustable feet “A” to make the boiler level as
shown in gure 6-2.
Once the boiler is in the correct position the lifting cables
(detail “B” in gure 6-1) must be removed before the top
cover is put on.
B
A
020010_01_030
B = Locking nut
MIN 0
MAX 0,39 " (10 mm)
Figure 6-2 - Feet to make it level
26
COSMOGAS60T - 280T
Page 27
7 - INSTALLATION - Minimum distances to be observed
7.1 - Dimensions and minimum
distances to be observed
For both installation and maintenance, it is necessary to leave
free spaces around the boiler, as shown in gures 7-1 and 7-2.
The dimensions and connection centre space distances for
the boilers are shown in gures 8-1, 8-2, 9-1 and 9-2.
Figure 7-1 - Minimum distances to be observed for models 60T, 70T, 100T, 115T and 140T
Figure 7-2 - Minimum distances to be observed for models 180T, 210T and 280T
COSMOGAS
27
60T - 280T
Page 28
8 - INSTALLATION - Dimensions and centre space distances - MYDENS boiler
Figure 8-1 - Dimensions and centre space distances of attachments for models 60T, 70T, 100T, 115T and 140T (References in gure 8-3)
Figure 8-2 - Dimensions and centre space distances of attachments for models 180T, 210T and 280T (References in gure 8-3)
28
COSMOGAS60T - 280T
Page 29
8 - INSTALLATION - Dimensions and centre space distances - MYDENS boiler
MODEL
1
DELIVERY
2
RETURN
3
AIR INTAKE
4
FLUE GAS
OUTLET
5
GAS
60T 1”1/2 * 1”1/2 * 136 mm ** 110 mm 1” 28 mm
70T 1”1/2 * 1”1/2 * 136 mm
100T 1”1/2 * 1”1/2 * 136 mm
115T 1”1/2 * 1”1/2 * 136 mm
140T 1”1/2 * 1”1/2 * 136 mm
180T DN65 PN16 * DN65 PN16 * 136 mm
210T DN65 PN16 * DN65 PN16 * 136 mm
280T DN65 PN16 * DN65 PN16 * 136 mm
** 110 mm 1” 28 mm
** 110 mm 1” 28 mm
** 110 mm 1” 28 mm
** 110 mm 1” 28 mm
** 160 mm 1”1/4 28 mm
** 160 mm 1”1/4 28 mm
** 160 mm 1”1/4 28 mm
* Connections and anges are not factory tted;
** Air intake in room, do not obstruct and do not add any connection;
Figure 8-3 - Table of diameters of connections in gures 8-1 and 8-2
6
CONDENSATE
OUTLET
COSMOGAS
29
60T - 280T
Page 30
9 - INSTALLATION - Dimensions and centre space distances - AGUADENS hot water heater
Figure 9-1 - Dimensions and centre space distances of attachments for models 60T, 70T, 100T, 115T and 140T (References in gure 9-3)
Figure 9-2 - Dimensions and centre space distances of attachments for models 180T, 210T and 280T (References in gure 9-3)
30
COSMOGAS60T - 280T
Page 31
9 - INSTALLATION - Dimensions and centre space distances - AGUADENS hot water heater
MODEL
1
WATER OUTLET2WATER INLET
3
AIR INTAKE
4
FLUE GAS
OUTLET
5
GAS
60T 1”1/2 * 1”1/2 * 136 mm ** 110 mm 1” 28 mm
70T 1”1/2 * 1”1/2 * 136 mm
100T 1”1/2 * 1”1/2 * 136 mm
115T 1”1/2 * 1”1/2 * 136 mm
140T 1”1/2 * 1”1/2 * 136 mm
180T DN65 PN16 * DN65 PN16 * 136 mm
210T DN65 PN16 * DN65 PN16 * 136 mm
280T DN65 PN16 * DN65 PN16 * 136 mm
** 110 mm 1” 28 mm
** 110 mm 1” 28 mm
** 110 mm 1” 28 mm
** 110 mm 1” 28 mm
** 160 mm 1”1/4 28 mm
** 160 mm 1”1/4 28 mm
** 160 mm 1”1/4 28 mm
* Connections and anges are not factory tted;
** Air intake in room, do not obstruct and do not add any connection;
Figure 9-3 - Table of diameters of connections in gures 9-1 and 9-2
WARNING! The hot water outlet, cold water inlet
and gas connections are threaded with NPT pitch they
are not in inches and the anges “A” and connections
“D” in gure 9-4, supplied with the boiler, must be used
and must be assembled on the manifold as shown in
the gure.
6
CONDENSATE
OUTLET
D
E
A = Flange supplied;
B = Hot water outlet;
C = Cold water inlet;
D = Connections supplied;
E = Gas input connection;
A
B
D
E
C
A
B
D
C
020013.01.013
020029.01.004
Figure 9-4 - Assembly of anges and reductions on threaded connections for hot water outlet, cold
water inlet and gas
COSMOGAS
31
60T - 280T
Page 32
10 - INSTALLATION - Plumbing connections - MYDENS boiler
10.1 - MYDENS boiler plumbing and gas
connections
WARNING! Before installing the appliance, the
central heating system and, if necessary, the domestic
hot water system must be washed thoroughly in order
to remove any residues or impurities which could
compromise the working order of the boiler.
To identify the position of the connections, see gures 8-1
and 8-2.
Gas connection
Connecting to the gas must be made to the relative attachment
with a rigid metal pipe. The capacity of the gas meter must
be adequate for the simultaneous use of all the gas boilers
connected to it. Connect the boiler to the gas, as required
by the regulations in force. The diameter of the gas pipe that
comes out of the boiler, is not a determining factor when
choosing the diameter of the pipe between the boiler and the
meter; it must be chosen according to its length and to head
losses.
other than those specied.
10.2 - MYDENS boiler safety valve
(responsibility of the installer)
The boiler is supplied with no safety valve against too high
pressure, so that the installer is able to choose the valve that
suits the system’s operating pressure (check the operating
pressure of the boiler in the technical data section). The
installation must be carried out in such a way as to allow the
user to check it has intervened when the valve is opened.
The safety valve outlet (responsibility of the installer) must
be orientated in such a way as to avoid danger for people if
it intervenes.
might cause harm to people, animals or things if it has
to intervene.
WARNING! Do not power the appliance with gases
WARNING! If you do not route the safety valve, it
WARNING! It is recommended that a gas isolation
valve should be installed immediately before the boiler,
in order to allow the gas supply to be interrupted.
10.3 - Examples of installation of MYDENS
boiler
Figure 10-1 - MYDENS boiler example of connection diagram
Figure 10-1 KEY
1 MYDENS boiler model 60T-280T
2 INAIL safety valve
3 INAIL pressure gauge
4 INAIL thermometer
5 INAIL maximum safety pressure switch
6 INAIL safety thermostat
7 Gas valve
8 INAIL Gas isolation valve
9 INAIL basin
10 Gas inlet
11 Expansion tank
12 Microbubble separator
13 External sensor
14 Filter
15 Electric power supply
16 Low or high temperature heating system
17 System load assembly
18 Cold DHW
19 Central heating circuit pump
20 Hydraulic separator
21 Air vent valve
23 ----------
24 INAIL minimum safety pressure switch
36 Primary circuit pump
37 Room thermostat or equivalent system
56 Balancing valve (necessary if there is in the boiler the
motorised valve, detail “17” in gure 3-1 and pump “36” is
NOT the modulating type)
57 - Drain valve
58 - Manifold sensor
32
COSMOGAS60T - 280T
Page 33
10 - INSTALLATION - Plumbing connections - MYDENS boiler
COSMOGAS
24 Return from the central heating system
Figure 10-2 - Example of
connection diagram of
MYDENS with hydraulic
separator and storage tank
1 MYDENS 60T-280T boiler
2 INAIL safety valve
3 INAIL pressure gauge
4 INAIL thermometer
5 INAIL maximum safety pressure switch
6 INAIL safety thermostat
33
25 Stopper for dirt outlet
26 Central heating system mixer valve
27 System outlet
28 Storage tank load pump
29 System load assembly
30 Storage tank safety valve
31 Storage tank temperature sensor
32 Domestic hot water circuit expansion tank
33 Domestic hot water outlet
34 INAIL minimum safety pressure switch
36 Primary circuit pump
37 Room thermostat or equivalent system
56 Balancing valve (necessary if there is in the boiler the motorised
valve, detail “17” in gure 3-1 and pump “36” is NOT the modulating
7 Gas valve
8 INAIL Gas isolation valve
9 INAIL basin
10 Gas inlet
11 Expansion tank
12 Microbubble separator
13 External sensor
14 Filter
15 Electric power supply
16 ----------
17 Air vent valve
18 Cold DHW
19 Central heating circuit pump
20 Hydraulic separator
60T - 280T
type)
57 - Drain valve
58 - Manifold sensor
21 Isolation valve
22 Check valve
23 Delivery to the central heating system
Page 34
10 - INSTALLATION - Plumbing connections - MYDENS boiler
10.4 - Safety relief valve
WARNING! It is mandatory to install a safety relief
valve against overpressure to protect the appliance and
the system, see Figure 10-3.
The appliance is supplied as standard without the safety
relief valve, to allow the installer to choose the type of valve
with the most suitable intervention pressure for the system.
The installer must take into account that the valve intervention
pressure cannot be higher than the maximum allowable
pressure of the appliance. This value can be found in the
table in section 9.
WARNING! Isolation devices must not be installed
between the appliance and the safety valve.
WARNING! It is forbidden to obstruct the
opening of the safety drain valve with any object.
WARNING! The safety drain valve must be
oriented or conveyed in such a way as not to create
danger situations to people or things in case of
intervention.
020029.01.006
Figure 10-3 - Safety rellief valve
34
COSMOGAS60T - 280T
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10 - INSTALLATION - Plumbing connections - MYDENS boiler
10.5 - Connection of expansion tank
WARNING! The boiler has no expansion
tank. Provide the system with an expansion tank
of a suitable size, as laid out in national and local
installation regulations.
10.6 - Delivery and return
WARNING! COSMOGAS is not liable for any
damage caused by incorrect use of additives in the
central heating system.
WARNING! The system after the appliance
must be made with materials that resist temperatures
up to 97°C and pressure of 11 bar. Otherwise (e.g.
with plastic piping), the system must be tted with the
relevant protection and safety devices.
Before connecting the plumbing, wash the system
thoroughly to eliminate any waste (hemp, radiators casting
sand, etc.), which could damage the appliance. This must
also be performed if the appliance is replaced.
In gures 8-1 and 8-2 you can check the positioning of the
delivery and return connections.
Install a metal mesh lter on the return pipe with passage
of 1 mm2 in order to trap any system residues before they
return to the boiler.
Do not use the appliance to introduce any type of
additive into the system.
10.7 - MYDENS boiler water supply
WARNING! The connection of the system
(and therefore the boiler) to the water mains must be
completed with the insertion between them of a device
that prevents backows to the drinking water system,
as required by the anti-pollution safety regulations in
force.
10.7.1 - Recommendations on
characteristics of water in the system
Filling the central heating system is an extremely delicate
operation that should not be underestimated, either in cases
of just replacing the heat generator or in when a new appliance
is installed. Incorrect assessment of the characteristics of the
system’s water can lead, in some cases, to damage to the
system and heating unit. A system is almost never perfectly
sealed; sometimes there may be water leaks and oxygen can
also get in; both these phenomena cause damage.
Among the parameters that can have a negative impact on the
lifetime of a system, the following are the main ones:
- The simultaneous presence of dierent metals (copper, brass,
steel and aluminium) which, in an aqueous environment, give
rise to galvanic corrosion.
- The presence of free oxygen, due to air inltration which may
occur near to joints or seals, constitutes a typical corrosive
agent, particularly active at temperatures between 50 and
70° C.
- Water leakage, which leads to frequent rells, can cause
corrosion or limescale, depending on the type of water
available for the llings. In all cases all of the leaks (and
relative rells) must be kept under control, especially when an
automatic lling system is installed. In this case it is denitely
recommended that a meter be installed which can indicate
the quantity of water replenished.
Natural or added impurities in the water. A lot of drinking
water can contain concentrations, which may be signicant,
of chlorides and sulphates that can increase the speed of
corrosion of metallic surfaces. Other undesirable components
could have been introduced into the system before or during
installation (building materials, metallic chips, shavings,
grease, deposits and dirt in general). Residues from welding
can also cause corrosion, both in new systems and after
modications and repairs. In old systems planned to work
with radiators, characterised by pipework with a very large
diameter, the water content of the system is signicant and
fosters the formation of dirt and deposits.
Dirt and Limescale The presence of black deposits (magnetite)
indicates that there is limited corrosion, however, the high
specic weight of this oxide can cause blockages that are hard
to remove, especially in the hottest areas. Limescale is due to
the hardness of the water, or to the presence of calcium and
magnesium salts. Calcium, in the form of calcium carbonate,
is deposited in the hottest areas of the system. Magnetite often
contributes to consolidating the limescale. On the other hand,
iron oxide (the water has a reddish colour) is an indicator of
corrosion from oxygen.
Frequent leaks. Where there are frequent leaks the hydrogen
and/or air accumulate on the top part of the heat exchanger
and radiators, preventing full exchange of heat. When the
electrolytic corrosion process has begun, the water level in
the system is lowered, gases accumulate in the top part of the
heat exchanger and radiators. The presence of air is caused
by the fact that the system might not be perfectly sealed. A
slow drop in system pressure due to a leak is often dicult to
nd, especially when the leak is minimal (in winter leaks from
radiator valves sometimes are not visible because they are
dried by the heat produced by the radiator or boiler). These
micro-leaks do, however, allow air to get into the system.
The main points that micro-leaks can develop are at the
joints and, in particular, on the intake side of the pump (air
vent valve, seals with O-rings, ll valves). In these cases, to
avoid damage, the system must be protected with a suitable
corrosion inhibitor.
10.7.2 - For correct operation of the
system make sure that:
1) the system has no leaks or at least the most obvious leaks
have been repaired;
2) if there is an automatic lling system, a litre counter must
have been installed so as to know the exact quantity of any
leaks;
3) lling the system and relling is done with softened water
so as to reduce its overall hardness. The water must also be
conditioned in order to keep the pH within the threshold set
so as to avoid corrosion;
4) Both on new systems and system replacements there must
be ecient systems to get rid of air and impurities; lters,
micro-impurity separators and micro air bubble separators;
5) Avoid discharging water from the system during normal
maintenance operations, even if it is apparently insignicant
quantities: for example when cleaning lters, equip the system
with the relevant isolation valves up and down stream from
the lter itself;
6) Always carry out an analysis of the system water before
opening communication between a new boiler and the system,
to establish whether the chemical and physical properties of
the water indicate the need to carry out complete emptying
of the system, the use of the water already in the system
or chemical washing of the system, using mains water with
the addition of a detergent, when there is a suspicion that
COSMOGAS
35
60T - 280T
Page 36
10 - INSTALLATION - Plumbing connections - MYDENS boiler
the system may be dirty or particularly blocked up, and the
subsequent relling with new treated water.
If the analysis of a sample of water that will be used to ll the
system shows the following values:
- Hardness from 50 ppm to 150 ppm CaCO3;
- 7 < pH < 9 *
then you can proceed with lling. If the properties are dierent,
an inhibitor must be used.
* In case of aluminum radiators, the pH must be between 7
and 8.
10.7.3 Water treatment in domestic heating
systems
The water in domestic heating systems must always be treated
both when the boiler is replaced and when it is a new system.
All the treatment systems and chemical conditioning processes
required must be set up during the planning stage, based on
the characteristics of the unrened water, in order to obtain
water with the following characteristics:
- Appearance: clear, colourless and with no foam;
- pH: from 7 to 9 * ;
- Hardness from 50 ppm to 150 ppm CaCO3;
- Conditioners: present within the concentrations laid down
by the supplier.
If the water characteristics are unknown, there is a very high
probability of running into problems such as the following:
a. LIMESCALE
In a system containing 1000 litres of water at 300 ppm, the
CaCO
will deposit on the surface of the heat exchanger as that is the
hottest point of the system, creating concentrated increases
in temperature and leading to the heat exchanger breaking.
b. CORROSION
As a rule corrosion is fostered by the presence of oxygen,
by contact between dierent metals, or by the presence of
chlorides.
c. DEPOSITS
These are insoluble organic and inorganic substances: DIRT,
RESIDUES FROM WORK.
content is equal to 300 g. If not appropriately treated, it
3
10.8 - MYDENS boiler heat circuit outlet
In order to avoid constantly relling with water and the resultant
introduction of oxygen and limescale, it is advisable to limit
as much as possible any work of draining the heating circuit.
10.9 - MYDENS boiler low-temperature
systems (or underoor heating)
WARNING! If the boiler is installed in an
underoor system made with plastic piping, all of the
necessary precautions must be taken against corrosion
due to oxygen in the water:
make sure that the system is made with plastic pipes
with oxygen permeability not exceeding 0.1 g/m3 at
40°C. Should the pipe not meet these characteristics, the
radiant panel circuit must be isolated from the boiler, via
a plate heat exchanger suitable for resisting the corrosion
generated by the oxygen dissolved in the water.
10.10 - Manifold sensor
The manifold sensor (detail 26 in gures 3-3, 3-5 and 3-7),
is tted at the factory onto the boiler manifold. However, this
position may not be correct in certain systems with a hydraulic
separator or a plate heat exchanger (see gures 10-1 and 10-
2). It is therefore recommended that the sensor be removed
from the boiler manifold to the hydraulic separator as shown
in gures 10-1 and 10-2, at detail 58.
WARNING! For correct operation of the system
the manifold sensor must be located at a point on the
hydraulic separator/plate heat exchanger where it can
detect the correct delivery temperature and can be
inuenced by the temperature of the secondary circuit
water ow
* In case of aluminum radiators, the pH must be between 7
and 8.
36
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Page 37
10 - INSTALLATION - Plumbing connections - MYDENS boiler
10.11 - MYDENS boiler characteristic
curve of head losses
MYDENS model boilers do not have a circulation pump.
For the size of the pumps to be used, the designer must
consider the system’s hydraulic resistances and the
hydraulic resistances of the boiler itself. For this purpose
the hydraulic resistance of the boiler is shown in gure 10-4
in the form of a graph.
Figure 10-4 Key
A = MYDENS 60T and MYDENS 70T
B = MYDENS 100T and MYDENS 115T
C = MYDENS 140T
D = MYDENS 180T and MYDENS 210T
E = MYDENS 280T
Head loss (kPa)
Figure 10-4 - Hydraulic resistances of MYDENS models “60T-280T”
Water ow rate (m3/h)
COSMOGAS
37
60T - 280T
Page 38
11 - INSTALLATION - Plumbing connections - AGUADENS hot water heater
11.1 - AGUADENS hot water heater
plumbing and gas connections
WARNING! Use trolleys suitable for the type of
boiler to move it. Not doing this could cause serious
harm.
To identify the position of the connections, see gures 9-1
and 9-2.
Gas connection
Connecting to the gas must be made to the relative
attachment with a rigid metal pipe. The capacity of the gas
meter must be adequate for the simultaneous use of all the
gas boilers connected to it. Connect the boiler to the gas,
as required by the regulations in force. The diameter of the
gas pipe that comes out of the boiler, is not a determining
factor when choosing the diameter of the pipe between
the boiler and the meter; it must be chosen according to its
length and to head losses.
gases other than those specied.
11.2 - AGUADENS hot
water heater safety valve
(responsibility of the installer)
The boiler is supplied with no safety valve against too
high pressure, so that the installer is able to choose the
valve that suits the system’s operating pressure (check
the operating pressure of the boiler in the technical data
section). The installation must be carried out in such a way
as to allow the user to check it has intervened when the
valve is opened. The safety valve outlet (responsibility of
the installer) must be orientated in such a way as to avoid
danger for people if it intervenes.
WARNING! Do not power the appliance with
WARNING! It is recommended that a gas
isolation valve should be installed immediately before
the boiler, in order to allow the gas supply to be
interrupted.
WARNING! If you do not route the safety valve,
it might cause harm to people, animals or things if it
has to intervene.
11.3 - AGUADENS hot water
heater examples of installation
Figure 11-1 - AGUADENS example of connection diagram
2 INAIL safety valve
3 INAIL pressure gauge
4 INAIL thermometer
5 INAIL maximum safety pressure switch
6 INAIL safety thermostat
7 Gas valve
8 INAIL Gas isolation valve
9 INAIL basin
10 Gas inlet
11 Expansion tank
12 Microbubble separator
14 Filter
15 Electric power supply
18 Cold DHW
23 ----------
24 INAIL minimum safety pressure switch
36 DHW circuit pump
38 AGUADENS model 60T-280T hot water heater
39 Polyphosphate salts softener
40 Hydraulic safety unit (EN 1487)
41 Storage tank
42 Storage tank probe
43 Storage tank outlet valve
44 DHW outlet
45 Storage tank safety valve
46 Storage tank air vent valve
56 Balancing valve (necessary if there is in the boiler the
motorised valve, detail “17” in gure 3-1 and pump “36” is
NOT the modulating type)
57 - Drain valve
38
COSMOGAS60T - 280T
Page 39
11 - INSTALLATION - Plumbing connections - AGUADENS hot water heater
11.4 - Safety relief valve
WARNING! It is mandatory to install a safety relief
valve against overpressure to protect the appliance and
the system, see Figure 11-2.
The appliance is supplied as standard without the safety
relief valve, to allow the installer to choose the type of valve
with the most suitable intervention pressure for the system.
The installer must take into account that the valve intervention
pressure cannot be higher than the maximum allowable
pressure of the appliance. This value can be found in the
table in section 9.
WARNING! Isolation devices must not be installed
between the appliance and the safety valve.
WARNING! It is forbidden to obstruct the
opening of the safety drain valve with any object.
WARNING! The safety drain valve must be
oriented or conveyed in such a way as not to create
danger situations to people or things in case of
intervention.
020029.01.006
Figure 11-2 - Safety rellief valve
COSMOGAS
39
60T - 280T
Page 40
11 - INSTALLATION - Plumbing connections - AGUADENS hot water heater
11.5 - Expansion tank
Set up a thermal expansion control system such as an
expansion tank. Make sure that the expansion tank is the
right size for the volume of water contained in the hot water
heater and the system (see section 19 heading “Water content
in primary heat exchanger”), also taking into account the
temperature and working pressure.
WARNING! The boiler has no expansion tank.
Provide the system with an expansion tank for domestic
hot water circuits of a suitable size, as laid out in national
and local installation regulations. Underestimating the
size of the expansion tank can cause the safety valve to
intervene.
The expansion tank must be installed as shown in gure 11-1
or according to recognised planning methods. Refer to the
expansion tank manufacturer’s instructions for further details
about installation.
11.6 - Circulation pump
This hot water heater must always be linked to a storage tank
of a size of not less than 1 litre per kW of power installed. A
domestic hot water circulation pump must be installed to ll
the storage tank. The hydraulic resistance of the hot water
heater is shown in the form of a graph in gure 11-3.
For the correct sizing of the pump, the designer must take into
account the resistance of the hot water heater, the resistance
of the storage tank and the resistance of the connection
system. For the electrical collection refer to gure 13-6.
If the pump selected has absorption of more than 3 A, insert
a support relay between the hot water heater and the pump.
Head loss (kPa)
Figure 11-3 Key
A = AGUADENS 60T and 70T
B = AGUADENS 100T and AGUADENS 115T
C = AGUADENS 140T
D = AGUADENS 180T and AGUADENS 210T
E = AGUADENS 280T
Figure 11-3 - Hydraulic resistances of AGUADENS models “60T-280T”
40
Water ow rate (m3/h)
COSMOGAS60T - 280T
Page 41
11 - INSTALLATION - Plumbing connections - AGUADENS hot water heater
11.7 - Minimum ow rate to the water
heater
Size the pump, the pipes and any device needed by the system
using a recognised planning method to guarantee the water
heater a ow of water that avoids limescale formation.
The minimum water ow rate must be chosen according to the
desired water temperature and according to the hardness of
the water. Figure 11-4 summarizes these parameters.
WARNING! It is the installer’s responsibility to
ensure that the minimum water ow rate to the hot water
heater is never lower than that shown in the table in
gure 11-4.
11.8 - Precautions against scalds
WARNING! This hot water heater can supply
water at a temperature of up to 80°C. When you are
using the water heated by the hot water heater you
must take care to avoid scalds.
Some domestic appliances such as automatic dishwashers
and washing machines may require the water temperature to
be increased. Setting the hot water heater to provide water
at the higher temperature demanded by these domestic
appliances does lead to the risk of scalds. To avoid this hazard,
safety devices to reduce the water temperature and prevent
the risk of scalds must be installed upstream from the users
of the domestic hot water.
11.9 - Water quality
WARNING! If the hot water heater has to work
at a maximum temperature of 60°C, size the pump to
obtain a minimum ow rate as shown in the Figure 5-11.
WARNING! If the water heater must work at
temperatures higher than 60 ° C, the hardness of the
water must be less than 15 ° F (150 mg / l) and the water
ow rate must be at the maximum value indicated in
Figure 11-4
WARNING! The water must not be softened
to values lower than 5°F (50 mg/l). At these values it
becomes acidic and can corrode parts of the hot water
heater, shortening its life.
WARNING! The acidity of the water must have a
pH value between 6.5 and 8.5. A value outside this range
is corrosive and can cause damage to the heat exchanger
and/or pipes.
WARNING! Install a lter with mesh no wider
than 0.5 mm² in the domestic cold water inlet.
WARNING! The domestic hot water circuit must
be made with materials resistant to temperatures of
at least 95°C and a pressure of 10 bar. Otherwise (e.g.
with plastic piping), the system must be tted with the
relevant protection and safety devices.
WATER HEATER MINIMUM/MAXIMUM FLOW RATE
WATER
HARDNESS
(°f)
21 60 2,5/4,5 5,4/9 9,1/13,5 10,8/18
24 60 2,9/4,5 6,1/9 10,4/13,5 12,4/18
27 60 3,2/4,5 6,9/9 11,8/13,5 13,1/18
30 60 3,6/4,5 7,8/9 12,8/13,5 14,8/18
33 60 4,0/4,5 8,6/9 13,1/13,5 16,4/18
Max 15 80 4,0/4,5 8,6/9 13,1/13,5 16,4/18
MAXIMUM
WATER
TEMPERATURE
(°C)
depending on the hardness and maximum water temperature
(for model indicated in m
60T
70T
100T
115T
140T
3
/h)
180T
210T
280T
Figure 11-4 - Table of minimum/maximum ow values inside the water heater in function of the water
hardness and the water temperature
COSMOGAS
41
60T - 280T
Page 42
C ADB EC ADB E
12 - INSTALLATION - Disposal of condensate
12.1 - Condensate outlet
The boiler has inside it a siphon system and condensate
neutraliser to evacuate condensates (see gures 3-3, 3-5 and
3-7, details “2” and “3”) and prevent combustion products from
escaping, the end of which meets duct “5” in gures 3-3, 3-5
and 3-7. This end must be funnelled into another anti-odour
siphon (responsibility of the installer) so as to prevent bad
smells from coming back into the room.
In particular, the condensate outlet system must:
020010.01.029
be performed with a pipe with an internal diameter equal
to or greater than 13 mm;
be installed in such a way as to prevent the liquid from
freezing; therefore pay attention to any external sections.
It is prohibited to drain into gutters or rainwater drainpipes;
slope continuously towards the drain point; avoid high
points, which could pressurise the pipe;
Figure 12-2 shows how a condensate disposal system must
be created downstream from the boiler.
Figure 12-1 - Condensate neutraliser
Figure 12-2 - Condensate outlet
Figure 12-2 Key
A = Condensate outlet duct start stopper;
B = Condensate inlet;
C = Stoppers for duct inspection;
D = Anti-odour siphon system;
E = Atmospheric connection (duct vent);
F = Condensate outlet;
G = Condensate outlet pipe;
YES
Figure 12-3 - Correct installation of condensate outlet pipe
42
NO
COSMOGAS60T - 280T
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13 - INSTALLATION - Electrical connections
13.1 - Electrical connections: details
WARNING !!! Disconnect power before carrying
out any operations inside the appliance.
WARNING! During maintenance label all the cables
being examined before disconnecting them.
WARNING !!! The appliance is only electrically
safe when it is properly connected to a suitable earthing
system installed in accordance with the relevant
standards and regulations in force.
This fundamental safety requirement must be met. If in
doubt, request a thorough check of the electrical system by
a professionally qualied technician.
Have a professionally qualied electrician make sure that
the electrical system is appropriate to the electrical power
required by the appliance, shown on the plate.
The appliance must be connected to the electrical mains
through a xed connection or through an unswitched plug
connection. The use of adapters, power strips, extension
cords, etc. is not allowed.
The appliance must be connected to the electrical mains
with a double insulated three-core cable or equivalent with
appropriate cross-section.
For connection to mains electricity, a two-pole switch must
be installed near the appliance with a contact opening
distance of at least 3 mm, as envisioned by the applicable
standards in force.
Respect the polarity between the neutral and phase wires
when connecting the appliance.
Make sure that the water, central heating and gas system
pipes are not used as earths for the electrical or telephone
system. This piping is not suitable for this purpose; serious
corrosion damage would occur in a very short time to the
appliance, piping and radiators.
WARNING! The boiler has no protection against
the eects of lightning strikes.
13.1.1 - Connecting power supply cable
To connect the power supply cable proceed as follows (refer
to Figure 13-1):
1.- use a triple-pole dual insulation cable
2.- access the electrical connections terminals following the
relevant instructions in section 18.2;
3.- lay the power supply cable through the cable gland next
to contacts “101”, “102” and “PE”;
6.- remove the sheathing from the cable, taking care to keep
the earth wire (yellow/green) 20 mm longer than the other
two;
7.- connect the yellow-green cable to the earth terminal (“PE”);
8.- connect the brown cable (Live) to terminal “101”
9.- Connect the blue cable (Neutral) to terminal “102”
KEY
A = Electric cables sheath;
B = Line;
C = Neutral;
D = Earth.
Figure 13-1 – Electrical connections
COSMOGAS
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13 - INSTALLATION - Electrical connections
13.1.2 – Choosing the room thermostat/
chronothermostat
The boiler is set up to operate with any room thermostat or
chronothermostat which has the contact to which the cables
from the boiler can be connected, with the following features:
- open/closed (ON/OFF);
- potential-free (not powered);
- closing, when there is a request for heat;
- 24VAC, 1A.
13.1.3 - Connecting the room thermostat/
chronothermostat
Install the room thermostat in a place in the house where
the temperature is most typical for the home and in an area
that is not vulnerable to sudden temperature changes, away
from windows or doors which open directly to the outside
(see gure 13-2).
Proceed as follows to connect the room thermostat cable (refer
to gures 13-4 and 13-5):
1.- Use a two-pole cable, with a minimum cross-section
of 1.5 mm2, from the boiler to the room thermostat/
chronothermostat. The maximum length allowed is 100
metres. Use a shielded cable with shield earthing;
2.- Remove the casing from the boiler, following the relevant
instructions in section 18.2;
3.- Lay the electric cable through the fairlead near contacts
“10” and “11”;
4.- Use a free fairlead, not used by other wires;
5.- Strip the cable;
6.- Connect the two ends of the cable to terminals “10” and
“11” (see gures 13-4 and 13-5).
WARNING! As the room thermostat/
chronothermostat cables are subjected to a very low
safety voltage (24 VDC), they must ow in ducts other
than those supplying 230 VAC power.
13.1.4 - Installing the outdoor temperature
sensor
Install the outdoor temperature sensor outside the building on
a wall facing NORTH or NORTH-EAST, at a height of between
2 metres and 2.5 metres from the ground. For buildings
with several oors, it must be installed at about half way up
the second oor. Do not install it above windows, doors or
ventilation outlets or directly below balconies or gutters. Do
not plaster over the outdoor temperature sensor. Do not install
the sensor on walls without eaves, i.e. where not protected
from rain.
Where the sensor is installed on a wall that has yet to be
plastered, it must be installed with a suitable thickness or be
removed before plastering.
Proceed as follows to connect the outdoor temperature sensor
cable:
1.- Lay a two-pole electric cable with a minimum cross-section
of 1.5 mm², which goes from the boiler to the outdoor
temperature sensor. The maximum length allowed is 100
metres. Use a shielded cable with shield earthing.
WARNING! As the cables are subjected to a very
low safety voltage (24 VDC), they must ow in wires
dierent from the 230 VAC power supplies.
2.- Connect the two-pole cable to terminals “14” and “15” in
gures 13-4 and 13-5;
3.- Connect the bipolar cable to the ends of the outdoor
temperature sensor.
Set the boiler to learn from the outdoor temperature sensor
as follows:
4.- Go into the “installer menu” as described in section 17.15
and set parameter 2003 = 1.
To conrm that the external sensor has been enabled, the
icon shows on the display.
Proceed with the steps given in section 17.9.1 to set the correct
adjustment values for the supply temperature, according to
the outdoor temperature.
Figure 13-2 – Correct positioning of the room thermostat/chronothermostat
44
COSMOGAS60T - 280T
Page 45
13 - INSTALLATION - Electrical connections
13.1.5 - Connection board 885 IF
Board 885 IF is supplied for all models (see detail “13” in
gures 3-3, 3-5 and 3-7).
The board enables:
1.- control of boilers via 0-10 Vdc analogue signal;
2.- control of boilers via digital signal by MODBUS
communication;
3.- cascade connection of boilers up to a number of 8 units
(see section 13.4)
0-10 Vdc type dialogue
Board 885 IF allows the boiler to be controlled through 0-10
Vdc dialogue proceeding as shown below:
1.- Install the board as required by the instructions provided;
2.- Go into the “installer menu” as described in section 17.15
and set parameter
3.- Now the boiler can be controlled via the 0-10 Vdc signal
according to the rules shown in gure 13-3;
2003 = 4;
MODBUS type dialogue
Board 885 IF allows the boiler to be controlled through
MODBUS dialogue proceeding as shown in the instructions
supplied on request:
13.1.6 - Alarm contact
The alarm contact solely reects the status of burner 1
(Master). In the event of one of the burners 2, 3 or 4 being
blocked, it is not detected by the alarm contact.
13.2 - Connecting MYDENS boiler to
storage tank
The MYDENS model boiler must be connected to a storage
tank to produce domestic hot water.
The hydraulic connections must be made as per gure 10-2
or similar.
Proceed as follows for the electrical connections (refer to
gures 13-4 and 13-5):
1.- Disconnect the electric power supply from the boiler;
2.- Lay a two-pole electric cable with a minimum cross-section
of 1.5 mm², which goes from the boiler to the storage tank
temperature sensor and connect it on the boiler to terminals
“12” and “13” (SB);
3.- Connect the other end of the cable to the storage tank
temperature sensor;
4.- Insert the temperature sensor probe inside the storage
tank sample point (see gure 10-2, detail “31”).
5.- Set parameter 3012 to value “1” (see section 20)
6.- electrically connect the storage tank pump to terminals
“107” and “108” of the boiler (see gures 13-4 and 13-5).
The temperature of the water stored inside the storage tank
can be selected by the user from a range of between 40°C
and 60°C.
WARNING !!! The water heater should be adjusted
to ensure that water is stored at a temperature greater than
60°C and a temperature of 50°C is achieved at all outlets
within 1 minute. Excessive temperatures signicantly
increase the possibility of scalding with children and
those with a sensory or mobility loss being at the greatest
risk. Where the possibility of scalding has been identied,
appropriate measures such as thermostatic mixing valves
should be considered.
Maximum
delivery
temperature
(Par.3017)
Minimum
delivery
temperature
(Par.3018)
1.0 1.5
Hysteresis of
OFF ON
ON/OFF
2 3 4 5 6 7 8 9
Voltage
Figure 13-3 – Operating rules for 0-10 VDC analogue input
COSMOGAS
45
10
60T - 280T
Page 46
13 - INSTALLATION - Electrical connections
13.2.1 - Precedence to production of DHW
The boiler leaves the factory set with total precedence given
to the production of domestic hot water. This means that the
boiler operates in DHW mode until it reaches the temperature
demanded by the storage tank connected. Because of this
the aforementioned setting could lead to a cooling of the
environment to be heated. Once the DHW demand has been
satised, the boiler automatically goes back to working for the
central heating circuit.
13.3 - Connecting AGUADENS hot
water heater to storage tank
The AGUADENS model appliance must be connected to a
storage tank.
The hydraulic connections must be made as per gure 11-
1.
Proceed as follows for the electric connections (refer to
gure 13-6):
1.- Disconnect the electric power supply from the boiler;
2.- Access the electric terminals for connection;
3. - Disconnect the manifold temperature sensor from
4.- Use the storage tank sensor which is supplied with the hot
Lay a two-pole electric cable with a minimum cross-section
5.- Connect the other end of the cable to the storage tank
6.- Insert the temperature sensor probe inside the storage
terminals “8” and “9”;
water heater and connect it to terminals “8” and “9”.
of 1.5 mm², which goes from the hot water heater to the
storage tank temperature sensor and connect it to the hot
water heater on terminals “8” and “9” (Manifold temperature
sensor);
temperature sensor;
tank sample point (see gure 11-1, detail “42”).
The temperature of the water stored inside the storage tank
can be selected by the user from a range of between 40°C
and 80°C, using the commands to adjust the central heating
temperature
WARNING! A hot water temperature exceeding
51°C may cause permanent injury/damage to persons,
animals and objects. In particular, protect children, the
elderly and people with disabilities against any possible
risks of scalds, by inserting devices that limit the usage
temperature of the DHW to users.
or , as shown in section 17.5.
46
COSMOGAS60T - 280T
Page 47
13 - INSTALLATION - Electrical connections
Figure 13-4 - MYDENS boiler electrical connections (Example of system shown in gure 10-1)
Figure 13-5 - MYDENS boiler electrical connections (Example of system shown in gure 10-2)
COSMOGAS
47
60T - 280T
Page 48
13 - INSTALLATION - Electrical connections
Figure 13-6 – AGUADENS hot water heater electrical connections
(Example of system shown in gure 11-1)
48
COSMOGAS60T - 280T
Page 49
13 - INSTALLATION - Electrical connections
13.4 - Cascading appliances
Cascading appliances as shown in the diagrams in gures
13-7 (MYDENS) and 13-8 (AGUADENS).
It is necessary to rst install the 885 IF board (detail “13” in
gures 3-3, 3-5 and 3-7) in each appliance and acquire the
cascade command 885 HC (see gures 13-7 and 13-8).
A maximum of 8 appliances can be cascaded (examples with
4 are shown in gures 13-7 and 13-8).
Follow the 885 HC command manual for the instructions on
how to cascade appliances.
885 HC
Cascade
sequencer
Check
valve
appliance
SLAVE
#4 to #8
Heating
unit
pump
Check
valve
SLAVE
appliance
#3
Heating
unit
pump
Check
valve
SLAVE
appliance
#2
Heating
unit
pump
Figure 13-7 – Concept diagram: cascading MYDENS appliances
Check
valve
MASTER
appliance
#1
Heating
unit
pump
Hydraulic
separator
885 HC
Cascade
sequencer
General
cascade
sensor
Central
heating circuit
pump
Check
valve
SLAVE
appliance
#4 to #8
Heating
unit
pump
Check
valve
SLAVE
appliance
#3
Heating
unit
pump
Check
valve
SLAVE
appliance
#2
Heating
unit
pump
Figure 13-8 – Concept diagram: cascading AGUADENS appliances
COSMOGAS
49
Check
valve
MASTER
appliance
#1
Heating
unit
pump
Storage
tank
General
cascade
sensor
60T - 280T
Page 50
14 - INSTALLATION - Flue gas outlet and air intake pipe
14.1 - Burned gas exhaust and
combustion agent air intake pipe
WARNING! This appliance must be connected
to a ue system that evacuates the products of
combustion to the open air outside of the building.
WARNING! The ue system must be terminated
in accordance with the national and local regulations
and standards in force.
WARNING! The ue gases emitted by this boiler
can reach 90°C in some circumstances. Therefore
plastic ue gas outlet ducts capable of resisting this
temperature must be used.
WARNING! This appliance is a “condensing”
boiler. Use AISI 316L stainless steel materials or
polypropylene plastic materials to make the ue gas
exhaust so as to prevent corrosion due to the acidity of
the condensate.
It is recommended that exhaust and intake ducts supplied
by the manufacturer of the appliance itself. Other types of
ducts, if used, must be approved for such intended use.
The types of outlet for which the appliance is approved
are given in the technical features table at the end of the
manual under the heading “type” and on the data plate on
the boiler, also under the heading “type”.
The symbols used to dene the type of exhaust are given
below:
- B23 and B23P, intake in room and ue gas outlet through
wall or roof.
WARNING! The boiler is to be installed with
outlet type B23 or B23P and will therefore take in air
for combustion from the room in which it is located.
Therefore, all precautions must be taken regarding
ventilation of the rooms as prescribed by the national
and/or local regulations.
During operation, especially in winter, because of the high
eciency, it is possible for a condensation plume to form at
the boiler’s ue gas outlet. This is a natural phenomenon
and is not a cause for concern. It is the water vapour in the
ue gas which condenses when it comes into contact with
the outside air.
14.1.1 - Type of intake/exhaust B23 and
B23P
In the event of B23 type combustion air intake/ue exhaust,
it is essential that sucient allowances for combustion air
are made. The combustion air shall be taken from outside
either through natural or mechanical means.
The location of the air intake should be away from sources
of pollution such as industrial air extraction systems,
swimming pool ventilation systems and cleaning chemicals
such as laundry discharges. Further details on ventilation
requirements and allowances can be found in sections
5.1.1 and 5.1.2.
Figure 14-1 – Exhaust/intake systems
Key Figure 14-1
A = Plant room;
B =
Ventilation openings
50
;
COSMOGAS60T - 280T
Page 51
14 - INSTALLATION - Flue gas outlet and air intake pipe
E
N
14.1.2 - Split system
Flue
gas outlet
The boiler is supplied as standard with the joint to connect the ue
gas outlet. For installation proceed as shown in gure 14-2.
1.- insert pipe “E” into reducer “C” taking care that the gasket
provided is in the correct position;
Polypropylene pipes, more resistant to the formation of
condensate, must be installed.
Take particular care with the installation of pipes in the part
F
Air Inlet
C
that goes through the wall to the outside. Normal maintenance
operations must always be possible; therefore, install the pipes in
a sheath so that they can be slid out.
The horizontal sections must always have a slope of at least 2%
towards condensate outlet devices.
The boiler is already provided with a condensate collector that
must be connected to an outlet pipe (see section 12).
Figure 14-2 – Installing the
split system
Flue
gas outlet
Air Inlet
M
020014.01.028
020014.01.029
WARNING! This condensate outlet is designed to drain
away all of the liquid produced by a single appliance. If more
than one boiler is installed, each boiler should be provided
with its own condensate outlet.
The ue gas exhaust/air intake system can be extended up to a
maximum distance as indicated in section 19. Each 90° bend has a
loss equivalent to that reported in section 19.
WARNING! The ue gas outlet terminal must be
correctly protected against the eects of the wind.
WARNING! 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 14-4.
WARNING! The temperature of the exhaust pipe can
reach 90°C during operation. If the pipe passes through walls
that are sensitive to these temperatures, insert a protective
heat-insulating sheath.
WARNING! The outlet duct must be suitably supported
by rigid rods positioned not more than 1 m from each other.
The rods must be fastened to rigid walls that can take the
weight of the duct itself.
lengths of the exhaust components:
Figure 14-3 - Assembled system
62617344 TUBO 1m Ø110 1,0 /
62617345 CURVA 45° Ø110 2,2 /
62617346 CURVA 90° Ø110 4,0 /
62617289 TUBO 1m Ø160 / 1,0
62617297 CURVA 45° Ø160 / 2,2
62617298 CURVA 90° Ø160 / 4,0
Figure 14-4 – Fixing the exhaust and intake pipes
COSMOGAS
WARNING! The table below shows the equivalent
TABLE OF EQUIVALENT LENGTH COMPONENTS
CODE DESCRIPTION
51
UM = equivalent linear meters
60T-140T
180T-280T
60T - 280T
Page 52
15 - INSTALLATION - External cover
15.1 - Installation of external cover for
models 60T - 70T - 100T - 115T - 140T
WARNING:
the small parts of this kit will have the following
references:
- Screw 6x20 will be shown by “A”;
- Screw 4x10 will be shown by “B”;
- Screw 4x25 will be shown by “C”;
- Screw 4x20 will be shown by “D”.
WARNING:
Overtightening of screws “C” may lead to deformation of
the panel on which they are applied.
For installation of the external cover, proceed as follows:
1.- Loosen, with the relevant spanner, the boiler’s adjustable
feet “T” (gure 15-1), insert rod “H” and retighten the
adjustable feet “T” (gures 15-2 and 15-3). Repeat the
same procedure on the opposite side.
2.- Remove the boiler’s upper and lower front covers “F” and
the top cover “U”, as shown in gure 15-4.
3.- Insert the lower framework “J” (gure 15-5) and attach it
to rod “H” with the relative screws “A” in correspondence
with the holes that are present (gure 15-6).
4.- Replace the boiler’s upper and lower front covers “F”
(gure 15-7). Then adjust the adjustable feet “I” of the lower
framework “J” to regulate the boiler’s stability on the surface
it is installed on (gure 15-8).
5.- Insert the four tubes “K” in correspondence with the pins
present on the lower framework “J” using a rubber mallet
(gures 15-9 and 15-10).
6.- Insert the upper framework “G” of the external cover using
a rubber mallet (gure 15-11).
7.- Insert the upper xing rods “Q” (gures 15-12 and 15-13).
Then put in screw “A” with nut “E” for fastening the rods
to the boiler (gure 15-14) and screw “B” for fastening the
rods to the framework of the external cover (gure 15-15).
8.- Attach the cover
of the external cover, as shown in gure 15-16.
9.- Put on the covers
gure 15-19 and fasten them to the structure with screws
“C”; rst removing the pre-cut discs present (gures 15-17
and 15-18). It is also possible, depending on the type of
electrical and condensate removal system in the place
the boiler is installed, to remove if necessary the pre-cut
sections “X” and “Y” on the metal sheet
gure 15-19.
10.- Fix the two anti-rain grills “R” and the metal plates “S” to
the covers previously assembled; using screws “B” (gure
15-20).
11.- Fix the metal plates “V”, with screws “B”, onto the back
of the external cover, as shown in gure 15-21.
12.- Put on the side covers
with screws “C” (gure 15-22).
13.- Position the top cover
x it to the upper framework “G” using screws “B” (gure
15-24), in correspondence with the holes present.
14.- Attach, using screws “D”, the shelter for the electrical
connections “L”, for the intake “M” and for the outlet
“N” (or “P”) to the top cover (gures 15-25 and 15-26);
remembering to insert gaskets “O” and “W” as shown in
gure 15-25.
AB
, using screws “C”, to the framework
AA
and AC in the direction shown in
AC
shown in
AD
, attaching them to the structure
AE
as shown in gure 15-23 and
WARNING:
- If you have a ue gas outlet 110 mm in diameter, use
outlet covers “N” in gure 15-25.
- If you have a ue gas outlet 80 mm in diameter, use
outlet covers “P” in gure 15-25.
AN
15.- Put on the front cover
15-28. Attach it to the structure by tightening locks “Z” with
a at-head screwdriver (gure 15-29).
16.- Finally, attach metal sheets
“B”, to the lower framework “J”; as shown in gures 15-30
and 15-31.
as shown in gure 15-27 and
AR
and AS, using screws
52
COSMOGAS60T - 280T
Page 53
H
J
A
62610111.005
K
K
62610111.006
J
K
62610111.007
G
62610111.009
J
I
62610111.042
F
F
62610110.012
15 - INSTALLATION - External cover
T
T
62610111.001
Figure 15-1 Figure 15-2
U
H
62610111.002
T
T
62610111.003
Figure 15-3
A
J
Figure 15-4
62610110.011
62610110.001
H
Figure 15-5 Figure 15-6
Figure 15-8 Figure 15-9
Figure 15-7
COSMOGAS
Figure 15-11
53
60T - 280T
Figure 15-10
Page 54
15 - INSTALLATION - External cover
Q
62610110.002
B
Q
A
62610110.003
V
B
V
B
62610110.006
AB
C
62610110.004
C
R
B
R
S
B
B
62610110.007
C
C
AD
AD
62610110.008
E
A
62610111.012
Q
B
62610111.013
62610111.039
Figure 15-12
Figure 15-16
Figure 15-13 Figure 15-15
Figure 15-14
AA
62610111.023
Figure 15-17
AC
Y
X
Figure 15-18
Figure 15-19
62610110.005
Figure 15-20
Figure 15-21
54
Figure 15-22
COSMOGAS60T - 280T
Page 55
15 - INSTALLATION - External cover
AN
Z
62610110.010
M
W
L
O
N - P
W
62610111.044
D
D
D
62610111.030
G
AE
62610111.021
B
B
62610112.006
Z
62610111.032
B
AN
62610112.007
Figure 15-23
Figure 15-25
Figure 15-24
Figure 15-27
Figure 15-29
COSMOGAS
Figure 15-26
Figure 15-28
AS
AR
AS
Figure 15-31
J
AR
62610112.009
Figure 15-30
55
B
62610112.010
60T - 280T
Page 56
15 - INSTALLATION - External cover
15.2 - Installation of external cover for
models 180T - 210T - 280T
WARNING:
The small parts of this kit will have the following
references:
- Screw 6x20 will be shown by “A”;
- Screw 4x10 will be shown by “B”;
- Screw 4x25 will be shown by “C”;
- Screw 4x20 will be shown by “D”.
WARNING:
Overtightening of screws “C” may lead to deformation of
the panel on which they are applied.
For installation of the external cover, proceed as follows:
1.- Loosen, with the relevant spanner, the boiler’s adjustable
feet “T” (gure 15-32), insert rod “H” and retighten the
adjustable feet “T” (gures 15-33 and 15-34). Repeat the
same procedure on the opposite side.
2.- Remove the boiler’s upper and lower front covers “F” and
the top cover “U”, as shown in gure 15-35.
3.- Insert the lower framework “J” (gure 15-36) and attach it
to rod “H” with the relative screws “A” in correspondence
with the holes that are present (gure 15-37).
4.- Replace the boiler’s upper and lower front covers “F”
(gure 15-38). Then adjust the adjustable feet “I” of the
lower framework “J” to regulate the boiler’s stability on the
surface it is installed on (gure 15-39).
5.- Insert the four tubes “K” in correspondence with the pins
present on the lower framework “J” using a rubber mallet
(gures 15-40 and 15-41).
6.- Insert the upper framework “G” of the external cover using
a rubber mallet (gure 15-42).
7.- Insert the upper xing rods “Q” (gures 15-43 and 15-44).
Then put in screw “A” with nut “E” for fastening the rods
to the boiler (gure 15-45) and screw “B” for fastening the
rods to the framework of the external cover (gure 15-46).
8.- Insert in the direction shown in gure 15-47, the bolts “V”
(not supplied at present in the kit) for plumbing.
9.- Position metal sheets
direction shown in gure 15-48. Then attach them to the
framework of the external cover with screws “B” (gure
15-49).
10.- Insert metal sheets
respectively in front of (gure 15-51) and behind (gure 15-
52) the previously assembled metal sheets in the direction
shown by the arrows. Then put in screws “B” as in gure
15-53.
AA
and AB (gure 15-50) in the
AC
and
AD
in figure 15-54
13.- Put on the cover
15-59 and fasten it to the structure with screws “C” (gure
15-60). Then attach anti-rain grill “R” and metal sheet “S”
(removing the pre-cut section, as shown in gure 15-61);
attaching both with screws “B” (gure 15-60).
14.- Put on the side covers
them to the structure with screws “C” (gure 15-62).
15.- Position the top cover
and attach it using screws “B” in correspondence with the
holes (gures 15-63 and 15-64).
16.- Attach the shelter for the electrical connections “L”, for
the intake “M” and for the outlet “N” (or “P”) to the top cover
using screws “D” (gures 15-65 and 15-66); remembering
to insert gaskets “O” and “W” as shown in gure 15-65.
WARNING:
- If you have a ue gas outlet 160 mm in diameter, use
outlet covers “N” in gure 15-65.
- If you have a ue gas outlet 110 mm in diameter, use
outlet covers “P” in gure 15-65.
17.- Put on the front covers
in gure 15-67 and 15-68. Attach them to the structure by
tightening locks “Z” with a at-head screwdriver (gure
15-69).
18.- Finally, attach metal sheets
“B”, to the lower framework “J”; as shown in gures 15-70
and 15-71.
AH
in the direction shown in gure
AM
(rst) and AL (next), attaching
AE
on the upper framework “G”
AP
(rst) and AN (next) as shown
AR
and AS, using screws
WARNING: the metal sheets AC and AD include
holes of dierent diameters (see gure 15-54). For
correct assembly, position them in the ways described
in point 10.
11.- Remove the pre-cut discs from covers
shown in gures 15-55 and 15-56 and, depending on the
type of electrical and condensate removal system in the
place where the boiler is installed, it is possible to remove
the pre-cut sections “X” and “Y” on the cover
in gure 15-57 if necessary.
AF
12.- Put on the covers
57 and fasten them to the structure with screws “C” (gure
15-58). Then attach the anti-rain grill “R” to the cover
using screws “B”, as shown in gure 15-58.
and AG as shown in gure 15-
AG
and AH as
AG
shown
AG
56
COSMOGAS60T - 280T
Page 57
15 - INSTALLATION - External cover
62610111.001
62610111.003
H
J
A
62610111.005
K
K
62610111.006
J
K
62610111.007
G
62610111.009
J
I
62610111.042
F
62610111.046
T
T
Figure 15-32 Figure 15-33
U
T
T
H
62610111.002
Figure 15-34
A
J
F
Figure 15-35
62610111.045
62610111.004
H
Figure 15-36 Figure 15-37
Figure 15-39 Figure 15-40
Figure 15-38
COSMOGAS
Figure 15-41
Figure 15-42
57
60T - 280T
Page 58
15 - INSTALLATION - External cover
AA
AB
62610111.016
B
62610111.019
62610111.040
E
A
62610111.012
Q
B
62610111.013
62610111.023
62610111.039
Q
A
B
62610111.011
Q
62610111.010
Ø= 5.00 mm
62610111.020
Figure 15-43
V
Figure 15-47
Figure 15-44
AA
AB
62610111.014
Figure 15-48
AC
Figure 15-45
62610111.015
Figure 15-49
Figure 15-46
AA
B
AB
B
Figure 15-50
Figure 15-54
AC
AD
AC
AD
62610111.017
62610111.018
Figure 15-51 Figure 15-52Figure 15-53
Ø = 3.16 mm
AD
Figure 15-55
58
Figure 15-56
COSMOGAS60T - 280T
Page 59
15 - INSTALLATION - External cover
C
C
AF
AG
R
B
62610111.025
62610112.011
62610111.028
G
AE
62610111.021
B
B
62610112.006
AF
AG
X
Y
62610111.024
Figure 15-57 Figure 15-58 Figure 15-59
AL
S
C
B
R
B
62610111.027
AH
Figure 15-60
S
C
AM
62610111.026
AL
C
Figure 15-61
Figure 15-62
Figure 15-63 Figure 15-64
COSMOGAS
59
AM
60T - 280T
Page 60
15 - INSTALLATION - External cover
62610111.032
M
W
L
O
N - P
W
62610111.044
D
D
D
62610111.030
AP
Z
AN
Z
62610111.031
B
62610112.009
AN
62610112.007
Figure 15-65
Figure 15-66
Figure 15-67
Figure 15-68
Z
Figure 15-69
AS
J
AR
B
Figure 15-70
AR
AS
62610112.010
Figure 15-71
COSMOGAS60T - 280T
60
Page 61
16 - START-UP
16.1 - Start-up
Before starting up the boiler, the following operations must
be carried out.
16.1.1 - Instructions to the user
Instruct the user on correct use of the boiler and the whole
system in general. In particular:
Hand over the installation and use manual and all the
documentation contained in the package to the user.
Instruct the user on any special measures for discharging
burned gases, informing them that they must not be
modied.
Inform the user of the water pressure check that needs to
be done on the system and the steps required to ll it and
vent the air.
Inform the user regarding the correct temperature, control
unit/room thermostat and radiator settings for saving
energy.
16.1.2 - Filling the condensate outlet siphon
The siphon found inside the boiler must be lled with water to
create the shutter that can prevent ue gases from escaping
from pipe “5” in gures 3-3, 3-5 and 3-7.
Proceed as follows to do this:
(refer to gure 16-1)
1.- undo and remove stopper “F” shown in the gure;
2.- insert a rubber tube into hole “S” and at the other end of
the tube position a funnel;
3.- slowly pour about 5 litres of water through the funnel;
4.- reassemble everything in reverse order.
WARNING! If the boiler remains o for more than
3 months, the siphon must be lled again as explained
above.
WARNING! Once the boiler is back on, check that
no exhaust gases are escaping from stopper “F”.
16.1.3 - Filling the central heating system
If the message Err 59 appears on the display when the
boiler is powered electrically, this means that the system must
be lled. Proceed as follows:
only use clean water from the mains.
WARNING! The addition of chemical substances
such as anti-freeze must be performed in compliance with
the product instructions. In all cases, these substances
must not be introduced directly inside the boiler.
WARNING! in the case of the AGUADENS range
of hot water heaters the addition of chemical substances
such as antifreeze is strictly forbidden. Failure to observe
this rule could cause serious damage to people’s health
or even death.
1.- open the air vent valve (detail “35” in gure 3-3, 3-5, 3-7)
2.- open the lling device provided by the installer upstream
from the appliance and ll the system until the pressure
gauge reads a pressure of 1.5 bar, showing this on the
display (detail “M” in figure 17-1) (on the display the
message Err 59 will disappear); if you want to increase
the lling pressure level you must set parameter 3022 t o
the desired value (see section 20);
2.- Make sure there are no water leaks from the ttings;
3.- Reclose the lling device provided by the installer upstream
from the appliance;
4.- Bleed the heating elements;
5.- Check the pressure on the boiler display again (detail “M”
in gure 17-1). If it has dropped, ll up to 1.5 bar again (or
S
up to the value set).
F
T
020014.01.030
Figure 16-1 – Filling the condensate outlet siphon
COSMOGAS
61
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16 - START-UP
16.2 - General recommendations
regarding the gas supply
For rst start-up of the boiler carry out the following checks:
That it is powered by the type of fuel for which it is set up.
That the gas supply pressure (with the boiler on and o)
falls between the maximum and minimum values shown in
the table in section 19.
That the gas adduction system has all the safety and
checking devices expected by national and local regulations
in force.
That the ue gas outlet terminal and the combustion agent
air intake terminal are free from any obstruction.
That the ue gas outlet terminal and the combustion agent
air intake terminal are located outside the building.
That the condensate outlet is connected.
WARNING! Do not power the appliance with
gases other than those specied.
WARNING! Check that the gas and supply pressure
are those for which the boiler has been adjusted.
The boiler is provided with the relevant gas conversion kit.
Before installation, clean the inside of the gas supply pipe
thoroughly;
Install a shut-o valve on the gas supply pipe;
To prevent damage to the appliance gas control unit, run
a leak test at a pressure not exceeding 50 mbar;
If the gas system must be inspected at pressures over 50
mbar, turn the valve located immediately before the boiler,
to isolate it from the system.
16.3 - Type of gas for which the appliance
is set.
On the right side of the boiler there is a label stating the type
and supply pressure of the gas for which the boiler is set.
The boiler may have one of the following two types of wording:
2H-G20-20mbar NATURAL GAS
This means that the boiler is set to operate with G20 gas
(methane) of group H of the second family, at a supply
pressure of 20 mbar.
3P-G31-37mbar LPG
This means that the boiler is set to operate with G31 gas
(propane, also known as LPG) of group P of the third family,
at a supply pressure of 37 mbar.
In gures 8-1, 8-2, 9-1 and 9-2 you can check the position of
the gas connection. The sections of tubing making up the gas
adduction system must always ensure a supply of gas that is
sucient to cover the maximum demand.
WARNING! If you smell gas:
A - Do not turn on any electrical device, including a
telephone, or any item that could cause sparks;
B - Immediately open doors and windows to create
a draught that can quickly clear the gas from the
room;
C - From another room, or from a neighbour’s
property, immediately call a professionally
qualied technician or the gas supply company.
Call the Fire Service if the former are not available.
62
COSMOGAS60T - 280T
Page 63
16 - START-UP
16.4 - Conversion of boiler models 60T
and 70T from one type of gas to another
WARNING! Read these instructions carefully
before making the gas change:
- The installation, calibration or modication of the gas
boiler must be carried out by specialised people, in
compliance with the law;
- 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 supply the boiler with a type of gas other than
those anticipated.
M
020010.01.020
A
H
Figure 16-2 – Removing the gas valve
Contents:
The kit (supplied as standard with the boiler) is made up of
- label certifying the new type of gas, a gas nozzle for each
burner and an instruction sheet;
To carry out the change of gas, proceed as follows:
1 - Turn o the boiler by moving the main switch to OFF (detail
“T” in gure 17-1);
2 - Turn o the gas supply valve;
3. - Open the boiler casing as shown in section 18.2;
4 - Undo junction “H” in gure 16-2;
5 - With the aid of a screwdriver, remove fork “A” in gure 16-2;
6 - Remove the gas valve with junction “C” as in gure 16-3
(paying attention to the OR “L” in gure 16-3);
7 - Replace nozzle “G” in gure 16-4 with the one in the kit,
checking it corresponds in diameter to that shown in table 16-8;
8 - Replace the gas valve paying attention to the correct
position of the OR “L” in gure 16-3 and to the joint gasket
“H” in gure 16-2;
9 - Replace fork “A” in the locking housing;
10 - Tighten joint “H” in gure 16-2;
11 - Open the gas supply valve;
12 - Check that there are no leaks from joint “H” in gure 16-2;
WARNING! Test the gas seal using a soap
and water solution only. The use of naked ames
is prohibited.
13 - Turn on the boiler by moving the main switch to ON (detail
“T” in gure 17-1);
14 - Completely undo screw “E” in figure 16-6 in an
anticlockwise direction;
15 - Check gas pressure by following section 16.7, the minimum
pressure must not be less than 10 mbar while the maximum
must not exceed 45 mbar;
16 - Check and adjust the CO2 following the procedure in
section 16.8 and checking the value in gure 16-8;
C
L
B
020010.01.021
Figure 16-3 - Raising gas valve
020022.01.008
NO
YES
WARNING! The measurements taken must be
done with guaranteed calibrated instruments that
ensure an accurate reading.
17.- Check the boiler’s power by following section 16.9;
18.- apply the adhesive data plate (see gure 16-7) to the right-
hand side of the boiler, in place of the label that identied the
old setting status, to certify the boiler’s new setting status,
as follows: apply label “B” if the boiler has been converted
from methane to LPG; apply label “A” if the boiler has been
converted from LPG to methane.
WARNING! If you smell gas:
A - Do not turn on any electrical device, including a
telephone, or any item that could cause sparks;
B - Immediately open doors and windows to create
a draught that can quickly clear the gas from the
room;
C - From another room, or from a neighbour’s
property, immediately call a professionally
qualied technician or the gas supply company.
Call the Fire Service if the former are not available.
020010.01.019
G
Figure 16-4 – Replacing the gas nozzle
COSMOGAS
63
60T - 280T
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16 - START-UP
Burner 2
Burner 1
(Master)
Burner 3
Burner 4
A - Connector from burner 1 (MASTER)
B - Connector from display
C - Connector from burner 2
D - Connector from burner 3
E - Connector from burner 4
Figure 16-5 - Burners position
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COSMOGAS60T - 280T
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16 - START-UP
16.5 - Conversion of boiler models 100T
to 280T from one type of gas to another
Boilers 100T to 280T are multi-burner models, this means
that the gas type conversion must be done on each burner.
WARNING! Read these instructions carefully
before making the gas change:
- The installation, calibration or modication of the gas
boiler must be carried out by specialised people, in
compliance with the law;
- 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 supply the boiler with a type of gas other than
those anticipated.
Contents:
The kit (supplied as standard with the boiler) is made up of
- label certifying the new type of gas;
- a gas nozzle for each burner;
- an instruction sheet;
To carry out the change of gas, proceed as follows:
1 - Carry out the conversion in “Burner 1” (MASTER). See
gure 16-5 to identify “Burner 1” (MASTER);
2 - Carry out the conversion in “Burner 1” (MASTER) following
points 1 to 16 of section 16.4;
WARNING! If you smell gas:
A - Do not turn on any electrical device, including a
telephone, or any item that could cause sparks;
B - Immediately open doors and windows to create
a draught that can quickly clear the gas from the
room;
C - From another room, or from a neighbour’s
property, immediately call a professionally
qualied technician or the gas supply company.
Call the Fire Service if the former are not available.
After converting “Burner 1”, continue with “Burner 2” as shown
below:
3 - Carry out the conversion in “Burner 2” following points 1
to 16 of section 16.4;
After converting “Burner 2”, continue with “Burner 3” (if
present) as shown below:
4 - Carry out the conversion in “Burner 3” following points 1
to 16 of section 16.4;
After converting “Burner 3”, continue with “Burner 4” (if
present) as shown below:
5 - Carry out the conversion in “Burner 4” following points 1
to 16 of section 16.4;
After converting all the Burners continue as shown below:
6 - Check the gas inlet pressure as shown in section 16.7;
7 - Check the boiler power as shown in section 16.9;
WARNING! The measurements taken must
be done with calibrated instruments that ensure an
accurate reading.
D
D
F
F
E
E
8.- apply the adhesive data plate (see gure 16-7) to the righthand side of the boiler, in place of the label that identied
the old setting status, to certify the boiler’s new setting
status, as follows: apply label “B” if the boiler has been
converted to G31; apply label “A” if the boiler has been
converted to G20.
COSMOGAS
020010.01.022
D - Gas inlet tapping point.
E - CO2 regulation screw.
F - Factory regulation screw (do not touch).
Figure 16-6 – Gas valve
65
60T - 280T
Page 66
16 - START-UP
Figure 16-7 – Labels certifying the new boiler
status
U.M. 60T 70T 100T 115T 140T 180T
210T
Rated gas supply pressure G20/G31 mbar 20/37
Minimum gas supply pressure G20/G31 mbar 10
Maximum gas supply pressure G20/G31 mbar 45
Methane gas nozzle diameter (G20) mm 8.9 9.5 8.9 8.9 9.5 9.5 9.5
LPG gas nozzle diameter (G31) mm 6.2 6.4 6.2 6.2 6.4 6.4 6.4
CO2 Methane gas (G20) at maximum power % from 8.4 to 9.0
CO2 Methane gas (G20) at minimum power % from 8.4 to 8.6
O2 Methane gas (G20) at maximum power % from 5.2 to 5.6
O2 Methane gas (G20) at minimum power % from 5.7 to 5.9
CO2 LPG gas (G31) at maximum power % from 9.9 to 10.5
CO2 LPG gas (G31) at minimum power % from 9.7 to 9.9
O2 LPG gas (G31) at maximum power % from 5.2 to 5.6
O2 LPG gas (G31) at minimum power % from 5.9 to 6.1
Figure 16-8 - Operating settings for the dierent gases
66
COSMOGAS60T - 280T
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16 - START-UP
16.6 - Ignition
16.6.1 - MYDENS boiler ignition
1.- Open the gas valve;
2.- connect the boiler to the electricity and set the general
switch to ON (detail “T” in gure 17-1);
3.- The boiler ignites only when the temperature requested
by the room thermostat is higher than the present delivery
temperature. Adjust the desired temperature for the heating
service using the
sensor is connected (see section 13.1.4), check that the
temperature calculated (see section 17.14, parameter
1012
to 280T) is higher than the present heat exchanger
temperature and the outdoor temperature (see section
17.14 parameter
temperature for switching o the central heating (see
section 17.15 parameter
4.- If the boiler is connected to a storage tank (see section
13.2) press keys
domestic hot water temperature.
5.- If the display indicates a low water pressure error (see
section 17.16.2), repeat the operation to bleed the air.
or parameter
16.6.2 - AGUADENS hot water heater
ignition
1.- Open the gas valve;
2.- connect the boiler to the electricity and set the general
switch to ON (detail “T” in gure 17-1);
3.- The boiler ignites only when the temperature set is higher
than the present input temperature. Adjust the desired
and keys. If the outdoor
1107
1004
for appliances from 115T
) is lower than the outdoor
2020
and to select the desired
);
16.7 - Controlling the supply gas
pressure and any adjustments
The gas supply pressure must match that shown in the table
in section 19. Proceed as follows to verify the pressure:
1.- Close the gas valve;
2.- access the boiler’s internal parts by following the procedure
described in section 18.2;
3.- loosen tapping point “D” (see Figure 16-6);
4.- connect a pressure gauge with a resolution of at least 0.1
mbar (1 mmH2O) to it, for models from 100T to 280T you
can use any of the valves present;
5.- turn on the gas valve;
6.- check that the pressure does not exceed 45 mbar;
7.- position the general switch to ON (detail “T” in gure 17-1)
and trigger a demand for heating by pressing key
up to the maximum value, check that the temperature set
is higher than the output temperature and that the system
is in the right conditions to disperse the heat generated;
8.- Set parameter
use parameter
maximum power for 20 minutes;
9.- with the boiler at maximum capacity, check that the gas
supply pressure does not fall below the value shown in
Figure 16-8. If the pressure is lower, do not try to make any
adjustments to the boiler, instead you must act upstream
from it to restore the correct pressure and ow of gas.
WARNING! Do not touch screws “E” and “F” in
gure 16-10, these are factory set for the correct ow of
gas and the correct output pressure.
After verifying the gas pressure is correct:
2200
2010
at
HIGH
). Now the burners will operate at
(in models 60T and 70T
temperature for the input using the
4.- If the display indicates a low water pressure error (see
section 17.16.2), repeat the operation to bleed the air.
and keys.
1.- Reset parameter
70T use parameter
2.- turn o the gas valve;
3.- disconnect the pressure gauge and reclose the tapping
point “D”;
4.- check for any possible gas leaks from tapping point “D”
(gure 16-6);
2200
2010
to
OFF
);
(in models 60T and
Do not force the screws to close the tapping points in
order to avoid damaging the gas valve.
WARNING! Test the gas seal using a leak detection
uid. The use of naked ames is prohibited.
COSMOGAS
67
60T - 280T
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16 - START-UP
16.8 - Controlling the level of
CO2 and any adjustments
Table 16-8 shows the correct values of CO2 for a boiler
working in normal conditions, at an altitude of less than 1000
metres. A dierent value from the one shown can cause
malfunctions. A combustion analysis must be carried out to
check and make any necessary adjustment to this value.
Proceed as follows
:
16.8.1 - Check the CO2 content and make
any necessary adjustment on boiler
models 60T and 70T
WARNING! If during this procedure a CO value
of more than 1000 ppm is detected, turn o the boiler
and contact the dealer.
F
1.- The ue system must contain a purpose provided test point
for the analysis of combustion products. The test point should
be located as close to the appliance as is possible (see gure
16-9, part “F”).
2.- Turn on the boiler and open the link between terminals “10”
and “11”;
3.- Make sure that the temperature demanded is higher than
that of the boiler/hot water heater;
4.- Go into the installer menu (see section 17.15) and set
parameter
at maximum power for 20 minutes;
5.- Wait two or three minutes for the CO2 to stabilise;
6.- Insert the sensor to read the value of CO2 in point “F” shown
in gure 16-9;
7.- Compare the value of CO2 detected with that shown in table
16-8; make sure you read the value for the type of gas being
used. If the value of CO2 is not that shown in table 16-8, you
must correct it using screw “E” in gure 16-10. Using a 2.5
mm six-sided spanner (turn the screw clockwise to reduce
the value of CO2 and anticlockwise to increase it), make
small turns, always waiting for the CO2 value to stabilise
before continuing with further movements, until you reach
the desired value.
8.- Once you have reached the correct value of CO2 as in table
16-8, seal the screw with red paint or a similar system to
discourage any tampering with it.
2010 to HIGH. Now the boiler will operate
020014.01.037
F - Taking combustion analysis
Figure 16-9 - Taking combustion analysis
E
E
F
F
D
D
9.- Set parameter
at minimum power for 20 minutes.
10.- Wait two or three minutes for the CO2 to stabilise;
11.- Compare the reading for the value of CO2 with that shown
in table 16-8, make sure you read the value for the type of
gas being used. The value of CO2 must fall within the values
shown, if that is not the case you must turn o the boiler and
contact the manufacturer.
12.- Set parameter
normal operation.
13.- Close the combustion analysis hole in gure 16-9, with
a suitable stopper “F” as shown in the manufacturer’s
instructions for the outlet pipe.
WARNING! Once stopper “F” is in position with
the boiler at maximum power, check there are no leaks
of exhaust gases.
2010 at
2010 to
LO
. The boiler will now operate
OFF
to return the boiler to
020010.01.022
D - Gas inlet tapping point.
E - CO2 regulation screw.
F - Factory regulation screw (do not touch).
Figure 16-10 – Gas valve
68
COSMOGAS60T - 280T
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16 - START-UP
16.8.2 - Check the CO2 content and make
any necessary adjustment on boiler
models 100T to 280T
WARNING! If during this procedure a CO value
of more than 1000 ppm is detected, turn o the boiler
and contact the manufacturer.
1.- The ue system must contain a purpose provided test point
for the analysis of combustion products. The test point should
be located as close to the appliance as is possible (see
Figure 16-9, part “F”).
2.- Turn on the boiler and open the link between terminals “10”
and “11”;
3.- Make sure that the temperature demanded is higher than
that of the boiler/hot water heater;
4.- Go into the installer menu (see section 17.15 and set
parameter 2201 to HIGH. Now the MASTER burner will
operate at maximum power for 20 minutes;
5.- Wait two or three minutes for the CO2 to stabilise;
6.- Insert the sensor to read the value of CO2 in point “F” shown
in gure 16-9;
7.- Compare the value of CO2 detected with that shown in
table 16-8; make sure you read the value for the type of
gas being used. If the value of CO2 is not as shown in table
16-8, you must correct it using screw “E” in gure 16-10.
Using a 2.5 mm six-sided spanner (turn the screw clockwise
to reduce the value of CO2, or anticlockwise to increase it),
make small turns, always waiting for the value to stabilise
before continuing with further movements, until you reach
the desired value.
8.- Once you have reached the correct value of CO2 as in table
16-8, seal the screw with red paint or a similar system to
discourage any tampering with it.
9.- Set parameter 2201 to
will operate at minimum power for 20 minutes.
10.- Wait two or three minutes for the CO2 to stabilise;
11.- Compare the reading for the value of CO2 with that shown
in table 16-8, make sure you read the value for the type of
gas being used. The value of CO2 must fall within the values
shown, if that is not the case you must turn o the boiler and
contact the manufacturer.
LO
. Now the MASTER burner
16.9 - Check boiler power
The boiler’s air/gas mixture ratio is set at the factory. The gas
pressure at the burner is controlled indirectly by the fan. The
only way to check the boiler’s power is to act directly on the
gas meter. Proceed as follows:
1. Turn on the boiler by moving the general switch (detail
“T” in gure 17-1) to ON
setting the requested temperature to the maximum using
key
dispersing all the heat generated.
2. For models 60T and 70T, set parameter
For the other models set parameter
the boiler will operate at maximum power for 20 minutes
3. Measure the gas ow rate at the meter. The value obtained
must be compared with the value given in section 19 under
the heading “Gas ow rate” with a tolerance of +/- 10%.
4. If the gas ow rate is lower, check:
a) That there are no obstructions in the air intake and ue
gas outlet ducts;
b) That the lengths of the air intake and ue gas outlet ducts
correspond with what is shown in section 19;
c) That the air intake lter (detail “11” in gures 3-3, 3-5 and
3-7) is clean;
5. If the gas ow rate falls within this margin, set parameter
2200 to
parameter 2010 to
operation;
6. If the gas ow rate is higher, repeat the process described
in section 16.9.
, making sure that the system is capable of
OFF. In boiler models 60T and 70T,
and launch a heating request by
2010
2200
OFF
to return the boiler to normal
to
HIGH
to
HIGH
, now
.
set
16.10 - Minimum water ow rate
The boiler has a system to protect against low water ow rate.
The water ow rate gauge (detail “16” in gure 3-1) constantly
measures the ow rate on each heat exchanger. If the ow rate
falls below the value of the “Minimum operating water ow rate”
described in section 19, the boiler will turn o automatically and,
after three minutes, if the ow rate does not go up, the relative
error will appear on the display.
.
WARNING! The CO2 reading at minimum power
could be inuenced by the chimney draught. This is
deduced when the CO2 value is rather low compared to
the value at high power. In this event it is necessary to
take the CO2 reading by removing the ue gas sensor
from the corresponding burner and inserting the
analyser sensor into the hole
12.- Set parameter 2201 to
13.- Work on the remaining burners, repeating the steps
from point “3” to point “11”, bearing in mind that parameter
OFF
;
2202 acts on burner 2, 2203 on burner 3 and 2204
on burner 4.
14.- Close the combustion analysis hole in gure 14-2, with
a suitable stopper “F” as shown in the manufacturer’s
instructions for the outlet pipe.
WARNING! Once stopper “F” is in position with
the boiler at maximum power, check there are no leaks
of exhaust gases that could cause damage.
COSMOGAS
69
60T - 280T
Page 70
17 - USE
020010.01.023
T
Figure 17-1 – Control board
FIGURE 17-1 KEY
A - Button to reduce water temperature
B - Multifunctional button Reset button and button to enter
“user menu” and “installer menu”
C - Button to increase water temperature
D - Burner status
Icon o = burner o
Icon on = burner on
E - Heating or domestic hot water service status:
Icon o = Service o
Icon on = Service active but not in operation
Flashing
F - Domestic hot water service with puer status:
Icon o = Service o
Icon on = Service active but not in operation
Flashing
G - Icon to enter “installer menu”
H - Unit of measurement of pressure displayed
L - Burner unit indicator
= Burner 1 (master)
= Burner 2
= Burner 3
= Burner 4
M - Water pressure or indicator of dierent parameters
within the dierent menus
N - Temperature of the central heating or domestic hot water or
indicator of the values assumed by the various parameters
O - Unit of measurement of the temperature displayed
P - Central heating service adjusted by the external sensor
R - Key for increasing the temperature of the domestic hot
water with puer and for scrolling through and changing
the value of the parameters
R - Key for reducing the temperature of the domestic hot
water with puer and for scrolling through and changing
the value of the parameters
T - On/o switch
icon = Service active and in operation
icon = Service active and in operation
17.1 - Water pressure check
17.1.1 - MYDENS boiler checking water
pressure
If the pressure inside the central heating circuit falls below 0.5
bar, viewer “N” in gure 17-1 shows Err 59 to indicate
that it is necessary to restore correct pressure. To do this,
proceed as follows:
1.- Open the device provided by the installer upstream of the
appliance in order to ll the system;
2.- Check the pressure on display “M” in gure 17-1; it must
reach a pressure of 1.5 bar (the Err 59 message must
disappear);
3. - Close the lling device provided by the installer upstream
from the appliance.
WARNING! During normal operation the device
provided by the installer upstream from the appliance for
lling the system must always stay in the closed position.
If the pressure drops over time, restore the correct value. This
operation may have to be repeated several times in the rst
month of operation to remove any air bubbles in the system.
17.1.2 - AGUADENS hot water heater
checking system pressure
If the pressure in the circuit falls below minimum pressure, the
appliance turns o automatically and display “N” in gure 17-1
shows Err 59 (see section 17.16.2) to indicate that the
correct pressure must be restored. As the hot water heater is
installed in an open circuit, the mains supply pressure must
be checked or any pressure reducer installed upstream must
be adjusted. When the value is re-established Err 59
disappears from the display.
70
COSMOGAS60T - 280T
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17 - USE
17.2 - General information
The boiler leaves the factory set with standard parameters.
However, it is possible to consult or make a series of
modications to the parameters via the “user menu” (section
17.14) and the “installer menu” (section 17.15). During
operation, the display shows the boiler operating status
as well as other information as indicated in section 17.16
(Diagnostics).
17.3 - Display
During normal operation further parameters can be
consulted via the “User menu” (see section 17.14), useful for
understanding how the boiler operates and for checking the
last lockouts or errors that occurred.
After 5 minutes of normal operation, the display goes o
completely to save energy. Just press any button to turn it
back on. In the event of an anomaly, the display comes back
on automatically. This function can be modied by following
section 17.13 (Energy saving).
WARNING! A domestic hot water temperature of
more than 51°C can cause scalds. Children, the disabled
and the elderly are at high risk of scalds. Check the
temperature of the water before getting into the bath or
shower.
17.6 - MYDENS boiler adjusting the
domestic hot water
If the boiler is installed to perform a dual function (central
heating and the production of domestic hot water), the
domestic hot water temperature can be adjusted using keys
and (see gure 17-1). When the keys are
pressed the display, detail “N” in gure 17-1, shows the
DHW temperature requested. The temperature can be set to
between 40°C and 60°C.
17.4 - Ignition and switch-o procedure
To turn on the boiler, do the following:
1.- Open the gas valve;
2.- Power the boiler electrically;
3.- If the display shows Err 65, that indicates that live
and neutral polarity has not been observed (call customer
support to resolve the problem without trying to take any
action yourself).
4.- Adjust the domestic hot water (where present) temperature
and the central heating temperature as per sections 17.5,
17.6 and 17.7 respectively.
The command and control equipment will switch the burner on.
If the boiler does not ignite with 3 minutes, it will automatically
try ve times to ignite again. If it still will not ignite, it is locked
out and the display will show Loc 1 together with the icon
, and the icon for the corresponding burner
will ash. Press the RESET button to restore normal operating
conditions. The boiler will automatically attempt to ignite again.
WARNING! If shutdown due to lockout occurs
frequently, contact a qualified technician to restore
normal operating conditions.
Once the boiler has started up correctly it will continue to
operate for the service required.
To turn o the boiler, do the following:
1.- Use switch “T” in gure 17-1 to remove electrical voltage;
2.- turn o the gas valve;
WARNING! A domestic hot water temperature of
more than 51°C can cause scalds. Children, the disabled
and the elderly are at high risk of scalds. Check the
temperature of the water before getting into the bath or
shower.
17.7 - MYDENS boiler adjusting the
central heating
The boiler’s central heating temperature can be adjusted
using buttons or (see gure 17-1). The room
thermostat turns on the circulation pumps so as to satisfy the
requirements for heating.
17.8 - Thermostatic adjustment of central
heating
The boiler is factory set with parameter 2003 at 0, i.e.
the boiler supplies hot water to the central heating system
at a temperature adjusted using the or keys.
Any room thermostat enables or disables the central heating
function to adjust the temperature in the rooms. To make
full use of the boiler eciency, adjust the central heating
temperature to a value that is just sucient to obtain the
desired temperature in the rooms. If the season gets colder,
progressively increase the value of the central heating
temperature. Proceed in reverse order when the season goes
towards warmer temperatures.
17.5 - AGUADENS hot water heater
adjusting the temperature
To adjust the temperature use keys or (see
gure 17-1). When the keys are pressed the display, detail
“N” in gure 17-1, shows the temperature requested. The
temperature of instant domestic hot water can be set to
between 20°C and 80°C.
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17.9 - Climate control
Via the “Installer menu” adjust parameter 2003 to 1. The
central heating delivery temperature is related to the outdoor
temperature sensor according to the algorithm in gure 17-
2. To adapt the calculation line to the various homes/climatic
conditions, all adjustment parameters must be set according
to the following sections.
17.9.1 - Climate control: setting the
parameters
Via the “Installer menu” (see section 17.15), set:
- 2020 = “Heating o outdoor temperature”, adjustable
to between 0°C and 35°C. When the outdoor temperature
reaches the value set under this parameter, the central
heating is switched o automatically. The central heating
switches back on automatically when the outdoor
temperature drops back to below this value. The
recommended start value is 22°C.
- 2021 = the “Projected outdoor temperature (winter)”,
adjustable to between -20°C and 5°C. This is the outdoor
temperature used to dene the heat input required by the
system. The recommended start value for a typical home
is -5°C;
- 2022 = the “Delivery temperature corresponding to
projected outdoor temperature (winter)”, adjustable to
between 0°C and 80°C. The delivery temperature assumes
the value set under this parameter when the outdoor
temperature corresponds to that set under parameter
2021. The recommended start values are: 40°C for
low-temperature systems (underoor heating); 70°C for
high-temperature systems (radiators);
outside temperature drops back below the value set under
this parameter, the central heating service switches back on
automatically.
17.10 - Time settings for the various
functions
To protect the lifespan of the appliance, improve comfort, and
increase energy savings, timers have been introduced during
operation. These time settings are as follows:
- Pump post-circulation: every time the room thermostat
determines the end of the central heating service, the pump
continues to operate for 4 minutes;
- Pump anti-block function: every 24 hours, the central heating
pump and the domestic hot water pump (if present) are
forced;
- Ignition delay: In all operating modes, every time the burner
switches o, it waits 3 minutes before it ignites again.
17.11 - Pump anti-blocking
During the summer, the pump switches on once every 24
hours for 15 seconds in order to prevent any deposits from
blocking it. The diverter valve and the storage tank pump (if
present) are activated at the same time for the same reason.
17.12 - Anti-freeze protection
WARNING!
For the anti-freeze protection to be eective, the appliance
must be left with the electrical power supply and gas
supply present and the two services (domestic hot water
and central heating) in the
OFF position.
- 2023 = “Outside spring temperature”, adjustable to
between 0°C and 30°C. This is the outdoor temperature at
which the central heating is to reach the minimum supply
temperature. The recommended start value is 18°C;
- 2024 = the “Delivery temperature corresponding to
projected outdoor spring temperature”, adjustable to
between 0°C and 40°C. The delivery temperature assumes
the value set under this parameter when the outdoor
temperature corresponds to that set under parameter
2023. The recommended start values are: 30°C for
low-temperature systems (underoor heating); 42°C for
high-temperature systems (radiators);
- It is also possible to set the minimum and maximum central
heating temperatures using the respective parameters
3016 and 3015 in section 20.
If, for any reason, the central heating service does not
correspond to the load, use parameters
temperature corresponding to outdoor projected temperature
(winter)) to increase or lower the temperature calculated and
match the desired room temperature.
17.9.2 - Climate control: switching the
central heating service on and o
The climate control service is completely automatic, including
switch-o at the end of the season and switch-on at the start
2022 (Delivery
WARNING!
The anti-freeze protection service oered by the boiler
cannot guarantee anti-freeze protection of the central
heating system, the domestic hot water system or the
building itself, or a part of the same.
The central heating pump starts automatically when the boiler
temperature reaches 10°C. If the temperature drops further to
below 5°C, the burner also ignites to protect the boiler from
the eects of freezing.
If the boiler is not used for a long period of time (over a year),
empty it following the procedure in section 18.10.
17.13 - Energy Saving
To reduce energy consumption by the display (Figure 17-1), 5
minutes after the last operation carried out it will automatically
turn o. This function can be deactivated or the time can be
changed using parameter
(section 17.15). If you set the parameter at 0, the display will
remain constantly on.
2100 that is in the “installer menu”
of the next season via parameter 2020. When the outside
temperature rises above the value set under this parameter,
the central heating switches o automatically. When the
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Calculated temperature (°C)
Par. 2021
Par. 2023
Par. 2020
Par. 2020 = outdoor temperature for heating switch-o
Par. 2021 = projected outdoor temperature (winter)
Par. 2022 = delivery temperature corresponding to projected outdoor temperature (winter)
Outdoor temperature (°C)
Par. 3016
Par. 2024
Par. 2022
Par. 3015
Par. 2023 = Outdoor spring temperature
Par. 2024 = delivery temperature corresponding to projected outdoor spring temperature
Par. 3016 = Minimum delivery temperature
Par. 3015 = Maximum delivery temperature
Figure 17-2 - Graph of climate control
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17.14 - “User menu”
Press the RESET button for 2 seconds to enter the “user
menu”. Viewer “M” in gure 17-1 begins to show parameter
1001 to indicate the change of mode to the user.
Using buttons
through the parameters contained in the menu.
To exit the menu just press the RESET button for 2 seconds
again.
Parameter Description of parameter U.M.
1001 Burner 1 - Water output temperature °C
1002 Puffer tank temperature (if present) °C
1004 Outdoor temperature (visible when an outdoor temperature sensor is installed) °C
1006 Burner 1 - Flue gas temperature °C
1007 Burner 1 - Return temperature °C
1008 Burner 1 - Ionisation current uA
1009 Burner 1 - Status of primary circuit pump and motorised valve ON/OFF
1010 Status of heating circuit pump ON/OFF
1011 Status of domestic hot water circuit ON/OFF
1012
1040 Burner 1 - Present rotation speed of fan revs/min
1041 Burner 1 - Rotation speed of fan at ignition revs/min
1042 Burner 1 - Rotation speed of fan with minimum power revs/min
1043 Burner 1 - Rotation speed of fan with maximum power revs/min
1051 Burner 1 - Last lockout (Loc) recorded (see section 17.16.1) ** /
1052 Burner 1 - Last error (Err) recorded (see section 17.16.2) ** /
1053 Burner 1 - Number of times that the burner ame has gone out n°
1055 Burner 1 - Number of failed ignitions of burner n°
1056 Burner 1 - Number of hours worked h x 10
1057 Burner 1 - Number of hours worked on domestic hot water with puffer tank h x 10
1059
1060
Heating setpoint calculated (with external sensor enabled)
(only for models 60T and 70T. For other models see Parameter 1107)
* Time interval between the last two lockouts (Loc)
* Time interval between the last two errors (Err)
and it is possible to scroll
If no button is pressed for more than 60 seconds, the menu
is exited automatically.
For models from 100T to 280T, all the parameters indicated
as “Burner 1” refer to the boiler’s Master Burner, to display
these parameters for the other burners, connect the display
to the burner in question as shown in section 18.8.
The following parameters can be examined in this menu:
°C
1
value in minutes; 2 value in hours;
3 value in days; 4 value in weeks;
1062 Burner 1 - Water ow rate l/min
1101 Multi-burner: Number of burners on n°
1102 Multi-burner: Manifold temperature °C
1103 Multi-burner: Number of burners locked out (Loc) n°
1104 Multi-burner: Number of burners showing Error (Err) n°
1106 Multi-burner: Boiler in emergency mode Yes/Not
1107
1120 Multi-burner: Burner 1 modulation level %
1121 Multi-burner: Burner 2 modulation level %
1122 Multi-burner: Burner 3 modulation level %
1123 Multi-burner: Burner 4 modulation level %
* How to read the values of parameters 1059 and 1060:
E.g. If it shows 1:29, it means 29 minutes;
E.g. If it shows 2:12, it means 12 hours;
E.g. If it shows 3:15, it means 15 days;
E.g. If it shows 4:26, it means 26 weeks.
Multi-burner: Heating setpoint calculated
(only mod 100T, 115T, 140T, 210T and 280T) (for other models see Parameter 1012)
** If the number 255 is displayed it means that there has been
no lockout or error.
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17.15 - “Installer menu”
WARNING! Changing these parameters could
cause boiler and therefore system malfunctions. For
this reason only a technician with the awareness and
in-depth knowledge of the boiler can change them.
The boiler’s command and control board makes available
to the technician this menu of parameters, for analysis of
operation and adaptation of the boiler to the system.
To go into the “installer menu”, proceed as follows:
1.- hold down the RESET button and
seconds until parameter 2001 is displayed. The symbol
appears in the centre of the display, to indicate entry
into the “installer menu”.
2.- within the menu it is possible to scroll through the
parameters using buttons
and ;
3.- once the parameter concerned is displayed you can change
it in this way:
a.- press the RESET button to enter into the parameter
(viewer “N” in gure 17-1 will start to ash);
together for 5
b.- Edit the value of the parameter using the
and
keys;
c.- Press the RESET key to conrm the change and go
back to the list of parameters;
4.- To exit the “installer menu” hold down the RESET button
for 5 seconds until symbol
disappears from the display.
If no button is pressed for more than 60 seconds, the menu
is exited automatically. Any change to the data that is not
conrmed with the RESET button will be lost.
For models from 100T to 280T the parameters indicated as
“Burner 1” refer only to Burner 1 (Master). To display or change
these parameters for the other burners, connect the display
to the burner in question as shown in section 18.8.
WARNING! Any variations made to the
parameters must be noted in the “Customised
values” column in the following table, in order to
facilitate any future replacements of the command
and control board.
The following parameters can be changed or examined in
this menu:
Parameter Description of parameter U.M. Setting range MYDENS
factory
value
2001 Central heating minimum power level % From 1 to 50 1 1
2002 Central heating maximum power level % From 1 to 100 100 100
2003 Central heating operating mode nn 0 = Room Thermostat
1 = External sensor with room
thermostat
2 = External sensor
room thermostat off reduces 2027
3 = Constant heating
room thermostat off reduces 2027
4 = 0-10 Volt input
5 = N/A
2004 Waiting time after maximum differential secs From 10 to 30 30 30
2005 Post circulation heating pump secs From 10 to 260 240 240
2010 Burner 1 - Burner forcings / Off = No forcing
Low = Minimum power
Ign = Ignition power
High = Maximum power
2011 Forcing of primary circuit pump and 2-way motorised
valve (Burner 1)
2012 Forcing of heating circuit pump / On or Off OFF OFF
2013 Forcing of domestic hot water circuit pump / On or Off OFF OFF
2014 Test icons on display. Pressing the RESET button turns
on all the icons on the display. Pressing the RESET button again returns the display to normal operation
2020 Climate control: outdoor temperature for heating switch-
off
2021 Climate control: project outdoor temperature (winter) °C From -20 to 5 -4 N/A
2022 Climate control: delivery temperature corresponding to
project outdoor temperature (winter)
2023 Climate control: spring project outdoor temperature °C From 0 to 30 21 N/A
2024 Climate control: delivery temperature corresponding to
spring outdoor temperature
/ On or Off
/ /
°C From 0 to 35
°C From 0 to 80
°C From 0 to 40
OFF OFF
OFF OFF
AGUADENS
factory
value
00 00
/ /
21 N/A
80 N/A
40 N/A
Customised
values
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2027 Night-time reduction °C From 0 to 50 10 N/A
2040 N/A N/A N/A N/A N/A
2041 N/A N/A N/A N/A N/A
2042 Burner 1 - Protection against frequent ignitions: time secs From 10 to 900 180 180
2043 Burner 1 - Protection against frequent ignitions: tempera-
ture differential
2062 Post circulation domestic hot water pump secs From 10 to 255 240 240
2063 Maximum time priority DHW min From 1 to 60 30 N/A /
2067 Priority production of DHW / 0 = Priority lasts the time set at
2100 Energy saving display min From 0 to 30 = delay in switching off
2101 Multi-burner: emergency mode / Yes or No Yes Yes
2102 Multi-burner: Emergency temperature adjustment °C from 20 to 65 45 45
2103 Multi-burner: ignition delay secs from 1 to 900 15 15
2104 Multi-burner: switch-off delay secs from 1 to 900 15 15
2105 Multi-burner: delta temp. burner ignition °C from 0 to 20 5 5
2106 Multi-burner: delta temp. burner switch-off °C from 0 to 20 5 5
2107 Multi-burner: maximum increase in temp. compared to
that calculated
2108 Multi-burner: maximum reduction in temp. compared to
that calculated
2109 Multi-burner: Next burner ignition % from 1 to 100 70 70
2110 Multi-burner: Next burner switch-off % from 1 to 100 10 10
2111 Multi-burner: Burner rotation gg from 0 to 9 6 6
2113 Multi-burner: Modulation start-up delay min from 0 to 60
2114 Burner 1: Primary circuit pump switch-off time secs from 0 to 255 240 240
2200 Forcing: All Burners together. \ Off, Low, Ign, High OFF OFF
2201 Forcing: Burner 1 (Master). \ Off, Low, Ign, High OFF OFF
2202 Forcing: Burner 2. \ Off, Low, Ign, High OFF OFF
2203 Forcing: Burner 3. \ Off, Low, Ign, High OFF OFF
2204 Forcing: Burner 4. \ Off, Low, Ign, High OFF OFF
N/A = Not Applicable
°C From 0 to 20
parameter 2063;
1 = OFF, the domestic hot water
does not have priority over central
heating;
2 = ON, the domestic hot water
always has priority over central
heating;
in minutes.
°C from 0 to 20
°C from 0 to 20
16 5
2 N/A
5 5
10 4
20 4
0 0
17.16 - Diagnostics
During normal operation of the boiler, viewer “N” in gure 17-1
continuously shows the boiler’s work status, by means of the
following indications:
Parameter Description of parameter Display on screen “N” in Figure 17-1
AFro
Anti-frost function on Boiler temperature (°C)
DHW with puffer operation status Temperature of DHW (°C)
Operation status of central heating or instant DHW Output temperature (°C)
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17.16.1 - Diagnostics: lockouts “Loc”
Lockout Lockout description Checks Solutions
Loc 1 No detection of ame after
ve successive attempts
to ignite.
Loc 2 (*) Gas valve not supplied
during ignition attempts
Loc 3 Gas valve loses electric
power supply during
operation
Loc 4 Gas valve relay doesn’t
close
Loc 5 (*) Gas valve circuit A - Check intervention of delivery safety thermostat;
Loc 6 Safety relay opening
error
Loc 7 Safety relay closing error Replace the command and control board.
Loc 11 Error of lockout for over
20 hours
Loc 12 Fan error A- Check power supply to fan 230 Vac;
Loc 13 Software error inside
control board
Loc 14 Software error inside
control board
Loc 15 Software error inside
control board
Loc 16 Software error inside
control board
Loc 17 Software error inside
control board
Loc 18 Software error inside
control board
Loc 19 Software error inside
control board
A - Gas supply pressure (see section 16.7);
B - Sparks on ignition electrodes (see section 18.5);
C - Correct gas pressure and CO2 value (see
sections 16.7 and 16.8);
D - Electric power supply of 230 Vac to gas valve;
E - Electrical resistance of the two coils of the gas
valve of 0.88 Kohm and 6.59 Kohm
F - If the burner comes on and goes off at the end
of the ignition attempt, check: that the ionisation
current is at a value of more than 4 (follow the
procedure in section 18.12)
A - Check intervention of delivery safety thermostat;
B - Check intervention of exhaust gases safety fuse;
Check the good order of the electrical connections
between gas valve and control board;
Check the good order of the electrical connections
between gas valve and control board;
B - Check intervention of exhaust gases safety fuse;
Press the RESET button to see the type of error
(Err) and then proceed;
B - Check the PWM connection to the fan;
A - If the pressure is not correct it must be reset
working upstream of the boiler;
B - Check and correct the electrodes position
(section 18.5);
C - Get rid of any blockage in the air intake and ue
gas outlet ducts;
D - If the power supplied to the gas valve is not at
230 Vac replace the control board;
E - If the resistance does not correspond, replace
the gas valve;
F - If the ionisation current does not correspond,
check the CO2 as shown in section 16.8. Check
the good order of the detection electrode and if
necessary replace it and check the good order of
the cable connecting the detection electrode and if
necessary replace it.
WARNING! If the exhaust gases temperature
safety fuse intervenes, before replacing it,
contact the boiler manufacturer in order to avoid
serious damage to the heat exchanger.
A - If the electrical connections are interrupted, reset
them;
B - If the connections are in good order try to replace
the gas valve or the control board;
A - If the electrical connections are interrupted, reset
them;
B - If the connections are in good order try to replace
the gas valve or the control board;
WARNING! If the exhaust gases temperature
safety fuse intervenes, before replacing it,
contact the boiler manufacturer in order to avoid
serious damage to the heat exchanger.
Replace the command and control board.
A - If the power supply is not correct, replace the
control board;
B - If there is no PWM fan dialogue, replace the control
board;
C - Try to replace the fan;
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
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Loc 20 Flame lost three times Check: that the ionisation current is at a value of more
than 4 (follow the procedure in section 18.12)
Check that the ue gas exhaust is properly protected
against obstructions caused by gusts of wind
Loc 21 Software error inside
control board
Loc 22 Software error inside
control board
Loc 23 Software error inside
control board
Loc 24 Software error inside
control board
Loc 25 (*) Gas valve circuit A - Check intervention of central heating delivery
safety thermostat;
B - Check intervention of exhaust gases temperature
safety fuse;
Loc 26 Software error inside
control board
Loc 27 Flame present with gas
valve closed
Loc 28 Flame present with gas
valve closed
Loc 29 (*) Flue gas outlet pressure
switch circuit or external
safety devices
Loc 30 Software error inside
control board
Loc 31 Flame lost three times A - Check detection electrode;
Loc 32 Software error inside
control board
Loc 33 Software error inside
control board
Loc 34 Software error inside
control board
Loc 35 Software error inside
control board
Loc 36 Software error inside
control board
Loc 37 Software error inside
control board
Loc 38 The ue gas sensor
does not increase in
temperature when the
burner ignites
A - Check the connection to the external safety device;
B - Check intervention of exhaust gases differential
pressure switch;
C - Check for any possible blockage of ue gas outlet;
B - Check that the ue gas outlet is suitably pro-
tected from blockages caused by gusts of wind.
C - Check for any possible recirculation of exhaust
gases
a - Check that the ue gas sensor meets the
requirement of section 18.14.
b - Check that the ue gas sensor (parameter
1006) increases in temperature when the burner
ignites.
(*) = This error locks out all the burners
If the ionisation current is not over 4, check the CO2 (see
section 16.8) and restore it to the correct value. Check the
ionisation spark plug and replace it if necessary. Check
the integrity of the ionisation current electric circuit cables.
If the ue gas outlet is positioned on a vertical wall it
must be protected by an anti-wind grill; if the ue gas
outlet is positioned on the roof, check that it isn’t in a
area where there is owback, and that any anti-wind
chimney that may be provided is really effective.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
WARNING! If the exhaust gases temperature
safety fuse intervenes, before replacing it,
contact the boiler manufacturer in order to avoid
serious damage to the heat exchanger.
Replace the command and control board.
Replace the gas valve
Replace the gas valve
A - Check external safety devices connected to
terminals 103 and 104.
B - Check the pressure switch against the ue gas
outlet blockage and if necessary replace it.
C - Get rid of any possible blockages of ue gas outlet.
Replace the command and control board.
A - Try to replace detection electrode.
B - Check and if necessary get rid of any blockage in
the air intake and exhaust gases outlet ducts.
C - Look for the cause of the exhaust gases
recirculation
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
a - If the ue gas sensor does not meet the requirements
of section 18.14, it must be replaced.
b - If the temperature does not increase, replace the
exhaust gas temperature sensor or the command and
control board.
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17.16.2 - Diagnostics: errors “Err”
Error Error description Checks Solutions
Err 0 A sensor is outside the
eld of measurement
Err 45 Software error inside
control board
Err 46 Software error inside
control board
Err 47 Software error inside
control board
Err 48 Software error inside
control board
Err 49 Software error inside
control board
Err 50 Software error inside
control board
Err 51 Software error inside
control board
Err 52 Software error inside
control board
Err 53 Software error inside
control board
Err 54 Flame heard at a time
when it shouldn’t be
there
Err 55 Low water pressure error Check the status of the pressure gauge Replace the pressure gauge.
Err 56 Low water pressure error Check the status of the pressure gauge Replace the pressure gauge.
Err 57 Low water pressure error Check the status of the pressure gauge Replace the pressure gauge.
Err 58 Low water pressure error Check the status of the pressure gauge Replace the pressure gauge.
Err 59 (*) Low water pressure error Check the system’s pressure and if necessary
Err 60 Exhaust gases high
temperature error
Err 61 Return temperature
higher than delivery
temperature
Err 62 (*) Error in condensate level
sensor
Err 64 Error in frequency signal
or error in WD communication
Err 65 Inverted polarity be-
tween live and neutral.
Err 66 Frequency signal error A - Check the frequency of the signal. It must be
Check that all the temperature sensors are in a
plausible eld of measurement
increase it.
A - Check the combustion efciency of the burner
the error is agged up against, efciency must be
above that required by regulations.
B - Check that the exhaust gases temperature sensor’s resistance matches the graph in section 18.14.
Check that the electrical resistance of the return sensor matches the graph in section 18.14.
A - Check that the condensate outlet duct is not
blocked;
B - Check the status of the condensate neutraliser;
A - Check the frequency of the signal. It must be
between 48 and 52 Hz.
B - Check the earthing and that neutral is at 0 volt
Check the correct polarity between live and neutral. Invert the polarity between live and neutral.
between 48 and 52 Hz.
B - Check the earthing and that neutral is at 0 volt
Replace the sensor that is not in the correct tem-
perature eld or replace the main board
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
Replace the command and control board.
If the pressure detected is higher than that in
parameter 3022, replace the pressure gauge.
A - If the efciency is lower than that required by
regulations, try to clean the exhaust gases side and
water side of the heat exchanger.
B - If the sensor doesn’t match it must be replaced.
If the sensor does not match, it must be replaced.
A - Clear the condensate outlet duct of any blockages;
B - Replace the product contained in the condensate neutraliser;
A - If the frequency doesn’t fall between the values,
ask the electricity supplier. Otherwise, try to replace
the control board.
B - If the neutral isn’t at zero, the correct electric
power supply must be restored. If the neutral is at 0
Volt, try to replace the control board.
A - If the frequency doesn’t fall between the values,
ask the electricity supplier. Otherwise, try to replace
the control board.
B - If the neutral isn’t at zero, the correct electric
power supply must be restored. If the neutral is at 0
Volt, try to replace the control board.
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Err 67 Earthing error Check the boiler is correctly earthed. Restore the correct earthing to the boiler.
Err 68 Communication watch-
dog error
Err 72 Delivery sensor open
Check that the electrical resistance of the sensor
matches the graph in section 18.14.
Replace the command and control board.
If the sensor does not match, it must be replaced.
Exchanger malfunction
Err 73 Return sensor open Check that the electrical resistance of the sensor
Err 76 DHW sensor open Check that the electrical resistance of the sensor
Err 80 Delivery sensor short
circuit
Err 81 Return sensor short
circuit
Err 84 DHW sensor short circuit Check that the electrical resistance of the sensor
Err 86 Flue gases sensor short
circuit
Err 87 RESET button error RESET button pressed too many times in 60 seconds
Err 93 Boiler selection error Check list of parameters 3000 (section 20)
Err 107 Software error inside
control board
Err 108 Software error inside
control board
Err 109 Error at burners 2, 3 or 4 When burner 1 (MASTER) goes into general lockout, it
Err 110 Flapper valve not open
error
Err 111 Flapper valve not closed
error
Err 112 Error relating to apper
inlet
Err 113 Software error inside
control board
Err 114 Water ow rate too low Check the ow rate at the burner (parameter 1062),
Err 115 Master board error Reset using parameter 3013.
Err 116 (*) Communication error A - BUS communication interrupted
NO CONN
Microprocessor lockout A - Check that the wires of the pressure gauge
Check that the primary heat exchanger temperature
fuse has not intervened.
matches the graph in section 18.14.
matches the graph in section 18.14.
Check that the electrical resistance of the sensor
matches the graph in section 18.14.
Check that the electrical resistance of the sensor
matches the graph in section 18.14.
matches the graph in section 18.14.
Check that the electrical resistance of the sensor
matches the graph in section 18.14.
turns off burners 2, 3 and 4, triggering error 109
Check that parameter 3005 is set at 0 or 4 If parameter 3005 is 0 or 4, replace the command
it must be greater than parameter 3035.
B - A burner is deprived of electric power supply
haven’t short-circuited
B - Check that the wires of the ow rate gauge
haven’t short-circuited
C - Check that the display is connected to the
MASTER
If the primary heat exchanger temperature fuse has
intervened (the contact is open), the exchanger
must be replaced
If the sensor does not match, it must be replaced.
If the sensor does not match, it must be replaced.
If the sensor does not match, it must be replaced.
If the sensor does not match, it must be replaced.
If the sensor does not match, it must be replaced.
If the sensor does not match, it must be replaced.
Replace the command and control board.
Replace the command and control board.
Resolve error at burner 1 (Master).
A - Check and if necessary get rid of any blockage
in the air intake and ue gas outlet ducts;
B - Check the apper valve (detail 31 gure 3-2)
Check the apper valve (detail 31 gure 3-2)
and control board.
Replace the command and control board.
A - Increase the water ow rate at the system;
B - Check and if necessary get rid of any blockage
in the system.
A - Check the BUS connection.
B - Reset the electric power supply to all the burners
A - If it hasn’t short-circuited replace the pressure
gauge (or disconnect it using menu 3000).
B - If it hasn’t short-circuited replace the ow rate
gauge (or disconnect it using menu 3000).
C - If the display is not connected to the MASTER
the words “NO-CONN” appear
D - If none of the above cases apply, replace the
control board and/or the display.
(*) = This error locks out all the burners
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18 - MAINTENANCE
18.1 - General recommendations
This section must be brought to the user’s attention by the
installer, highlighting the tasks required to maintain correct
operation of the system;
The installer must also inform the user that lack of care and
maintenance of this boiler could cause malfunctions.
A regular annual maintenance check on the system is
advised for the following reasons:
- to maintain high eciency of the boiler and therefore save
fuel;
- to maintain a high level of safety;
- to maintain the high level of combustion environmental
compatibility;
WARNING! The appliance must only be serviced
by a competant person.
WARNING! Before any maintenance work,
disconnect the appliance from the electrical power
supply, using the relevant switch nearby.
WARNING! Close the gas supply isolation valve
before performing and maintenance operations.
The operations to be carried out at each maintenance
check are shown in the box below.
18.1.1 - Gas leak check
1. - Check for no gas leaks in the system;
2. - Check for any gas leaks using a gas leak detector
(with bubble or similar), or equivalent system, carefully
checking the whole gas pipe from the meter to the boiler.
WARNING! Do not carry out these checks in the
presence of naked ames.
18.1.2 - Checking the condition of the air
intake and ue exhaust ducts
1. - Check whether the air intake and ue gas outlet
ducts have any blockages, signs of corrosion, physical
damage, water marks or signs of rust.
2. - Make sure the externally assembled intake grids and
ue exhaust outlets do not have any residue and are
clean.
18.1.3 - Checking the system water
pressure
1. - Check that the system is full of water and pressurised
as reported in section 19 “Technical data”.
2. - Check for leaks in the hydraulic connections.
WARNING! Remove any leaks from the system
or the appliance. Continuously adding new water leads
to increased minerals that reduce the cross-section of
the passage, decreasing heat exchange and causing
the heat exchangers to overheat. All of this leads to
failures and reduces the appliance life.
MAINTENANCE PROTOCOL
- Check there are no gas leaks
(See section 18.1.1);
- Check good order of air intake and ue gas outlet system (Follow
section 18.1.2);
- Check the correct pressure of the water in the system
(See section 18.1.3);
- Check the ignition and detection electrodes
(See section 18.1.4);
- Cleaning the burner and the primary heat exchanger, ue gas side and
checking good order of heat insulation devices
(Follow section 18.4)
- Clean air intake lter
(Follow section 18.6)
- Clean condensate outlet system
(Follow section 18.7).
- Check the appliance efciency
(See section 18.13);
18.1.4 - Checking the ignition and
detection electrodes
1. - Remove the burner fan unit (as shown in section 18.3).
2. - Clean any material build-up from the electrodes.
3. - Make sure the electrodes are in the correct position as
shown in section 18.5.
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H
18 - MAINTENANCE
18.2 - Dismantling of cover and
access to internal components
WARNING! If there is an external cover, take it
o as shown in section 15
To dismantle the cover, proceed as follows (refer to Figure
18-1):
1.- Lift lid “A”;
2.- Undo screws “B”;
3.- Remove the front casing “C”;
4.- Remove the lower casing “E”;
5.- Open panel “D” by undoing the xing screw located on
the left and turning it as in the gure.
6.- Undo screw “G”;
7.- Lift lid “F”;
18.3 - Dismantling the
burner fan assembly
To dismantle the burner fan assembly, proceed as follows:
1 - turn o the gas adduction valve and the electric power
supply;
A
2.- access the boiler’s internal parts by following the
procedure described in section 18.2;
3.- dismantle the sparks generator “A” in Figure 18-2 by
undoing screws “D” in Figure 18-2 and disconnecting it
from the ignition spark plugs.
4.- dismantle air manifold “A” in Figure 18-3 by turning it
clockwise and then taking it out leftwards;
5.- undo junction “H” in gure 18-4, paying attention to the
gasket in the joint;
6.- with the help of a at-head screwdriver, remove spring
“A” in Figure 18-4;
7.- remove the electric plug from the gas valve;
8.- remove the gas valve by lifting it upwards, taking care
with O-ring “L” (see gure 18-4);
9.- Undo the four nuts “B” in Figure 18-5;
10.- take out the fan/burner assembly (detail “C” in Figure
18-5).
Reassembly of fan/burner assembly
To reassemble the burner/fan assembly work backwards
through the steps to dismantle it and bear in mind the
following precautions:
a - replace gasket “M” in Figure 18-4 taking care to clean
the housing of this gasket thoroughly, as well as the
bracket housing.
b - check the status of the gasket on junction “H” and of
O-ring “L” in Figure 18-4. If they are spoilt, replace them.
c - Once everything is put back together, turn on the gas
supply and carry out a seal test on junction “H” in Figure
18-4.
G
F
D
WARNING! Test the gas seal using a leak detection
uid. The use of naked ames is prohibited.
B
C
E
020009.01.008
Figure 18-1 - Dismantling of casing and opening of control panel
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18 - MAINTENANCE
BE C A
C
18.4 - Cleaning the burner and the
primary heat exchanger, ue gas side
For correct cleaning of the burner and the heat exchanger
body (ue gas side), proceed as follows (refer to Figure
18-5 unless otherwise advised):
1.- access the boiler’s internal parts by following the
procedure described in section 18.2;
2.- dismantle the burner fan assembly by following section
18.3;
4.- Pass a cylindrical brush with nylon bristles into the
combustion chamber “H”
WARNING! DO NOT use a metal brush. Only use
a brush with bristles made of nylon or a similar material.
020009.01.012
A
D
D
5.- using an extractor, suck up the unburnt residue found
inside the combustion chamber “H”;
6.- with the same extractor, clean the surface of the burner
and around the electrodes;
7.- reassemble the parts in reverse order;
8.- turn on the gas valve;
9.- restore the electric power supply.
10.- check that there are no gas leaks between the joints
that were removed;
WARNING! Test the gas seal using a leak detection
uid. The use of naked ames is prohibited.
WARNING! Whenever the burner or primary heat
exchanger is cleaned the good order of the heat insulation
devices “R” and “S” must be checked (see gure 18-5). If
necessary, replace them together with gasket “T” in the
burner (see gure 18-5).
Figure 18-2 - Dismantling sparks generator
D
B
M
020010.01.020
A
H
L
NO
020022.01.008
020009.01.014
Figure 18-3 – Removing the air manifold
COSMOGAS
020010.01.021
Figure 18-4 – Removing the gas valve
83
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18 - MAINTENANCE
A
TS
A
TS
R
R
020009.01.031
H
H
C
C
B
B
Figure 18-5 - Dismantling fan burner assembly
GASKET
020009.01.032
BURNER
UNIT
WARNING!
DO NOT reuse it, it must be replaced along with the burner unit. Consult the manufacturer for
information on replacing it.
The gasket ensures the combustion chamber is sealed. If the gasket is damaged
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18 - MAINTENANCE
18.4.1 - Heat insulation devices
The heat insulation devices must be checked once a year
and replaced if broken or damaged. See gure 18-6 in which
the heat insulation devices (details “C” and “E”) are shown
disassembled from the heat exchanger and burner.
To replace them, refer the to instructions provided with the
spare part.
A = Fixing screw
B = Washer
C = Heat insulation device
E = Heat insulation device
E =
White heat insulation device
G = Burner
H = Gasket
L = Ignition electrodes
M = Screws
N = Detection electrode
Q =
White heat insulation device
R = Gasket
S = Gasket
A
B
D
C
E
Q
F
H
020022.01.009
R
M
L
Figure 18-6 -
Heat insulation devices
S
G
N
18.5 - Correct positioning of ignition and
ionisation electrodes
For the appliance to work well, the electrodes must be
positioned correctly (refer to gure 18-7):
- the distance between ignition electrodes “A” and “B” must
be between 2.0 and 2.5 mm;
- the distance of ignition electrodes “A” and “B” from the
surface of the burner must be between 5 and 5.5 mm;
- the distance of ionisation electrode “C” from the surface of
the burner must be between 5.5 and 6.5 mm.
For accurate location of the electrodes it is good to use sliding
callipers to respect the tolerances given in Figure 18-7.
A = Left-hand ignition electrode
B = Right-hand ignition electrode
C = Detection electrode
Figure 18-7 - Position of electrodes on the burner
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18 - MAINTENANCE
B
A
A
020010.01.018
A
B
Figure 18-8 - Dismantling air intake lter
18.6 - Cleaning of air intake lter
The air lter must be cleaned in order for the boiler to work
correctly. Refer to gure 18-8 and proceed as follows:
1. - access the boiler’s internal parts by following the procedure
described in section 18.2;
2. - pull out lter detail “A” as shown in the gure;
3.- clean the lter with compressed air until its surface is
clean again;
4.- reassemble the lter and the boiler’s casing.
18.7 - Maintenance and cleaning of
condensate outlet system
During boiler maintenance the condensate outlet pipe
(detail “5” in gures 3-3, 3-5 and 3-7) is taken apart and
cleaned of any residues. Refit the cleaned pipe and
restore the level of liquid in the siphon as shown in section
16.1.2.
Check the level of pH every three months for the rst year.
Special litmus papers or a special electronic instrument that
gives a more precise reading can be used to carry out the test
(access the box via stopper “E” in gure 12-1). The frequency
of these checks can then be reduced to every six months
or year depending on how they are controlled by the local
regulations in force. The neutralising contents of the box must
be replaced when the level of pH falls below the level required
by the regulations in force. The permitted acidity level goes
from pH 5.5 to 9.5.
To replace the neutralising agent, do the following:
1. Follow the steps of section 18.2 to take o cover “E” in
gure 18-1;
2. Remove box “A” (Figure 18-9);
020010.01.014
WARNING! When the box is taken out, be careful
to hold it at an angle so as to prevent any leaks of liquid
that might cause damage
3. Open cover “C” (Figure 18-9) upwards;
4.
Check the good order of the box;
5. Check the good order of the neutralising material and if
necessary add some or replace it;
6. Fill with fresh water until the water begins to ow out of
the outlet;
7. Replace the box in the correct position;
WARNING! The neutralisation box is lled with
water to prevent exhaust gas from escaping while the
unit is in operation.
8. Turn on the gas supply;
9. Restore the boiler’s electric power supply;
WARNING! Carefully follow gure 18-9 to replace
the box “A” in the correct position.
described above, restore the level of liquid in the siphon
as shown in section 16.1.2.
.
After the maintenance
C
Figure 18-9 - Dismantling and opening condensate
neutraliser box
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18 - MAINTENANCE
18.8 - Connection of Display
to other burners
In boilers from 100T to 280T, which are multi-burner, the
display shown in gure 17-1, is always directly connected to
“Burner 1 (Master)”. All the parameters that can be consulted
on the display (sections 17.14, 17.15 and 20), that refer to
Burner 1 (Master) exclusively concern that burner. If you want
to see/change the same parameters for the other burners,
you must move the connection of the display from “Burner 1
(Master)” to the burner to be displayed/changed; proceed as
follows: (refer to Figure 18-10):
Burner 2
1. Disconnect the electric power supply from the boiler;
2. Follow the steps of section 18.2 to access the internal
components;
3. Disconnect terminal “B” (coming from the display) from
terminal “A” (coming from “Burner 1 (Master)”);
4. Connect terminal “B” to terminal “C”, “D”, or “E” depending on
which burner you want to examine or change, considering
this: terminal “C” is for “Burner 2”; terminal “D” is for “Burner
3” and terminal “E” is for “Burner 4”
5. Once the terminal is connected to the one to be checked,
restore voltage to the boiler and turn it on;
6. Now the display shows all the information relating to
the burner connected. Make any consultation or change
following the steps in sections 17.14, 17.15 and 20.
7. Once the check is completed, reconnect connector “B” to
connector “A” as it was before.
Burner 1
(Master)
Burner 3
Burner 4
A = Connector for dialogue Burner 1 (Master)
B = Connector from display
C = Connector for dialogue Burner 2
D = Connector for dialogue Burner 3 (Only in models 180T, 210T and 280T)
E = Connector for dialogue Burner 4 (Only in model 280T)
Figure 18-10 Connection of display in other burners
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18.9 - How to move a control board
Boiler models from 100T to 280T are set up to be managed
by a control board (Burner 1 Master). All the devices are
connected to this board: room thermostat, external sensor,
pump commands, external safety devices, and all internal
safety devices: condensate level sensor, exhaust gases
dierential pressure switch, etc.
If the Burner 1 control board has an error, the boiler stops
working. If the technician does not have the parts to replace the
board, he can temporarily replace it with the board from one
of the other burners present on the boiler, in order to restart it.
To do this, proceed as follows:
(refer to Figure 18-10 unless advised otherwise)
1. Turn o the general switch and disconnect the electric
power supply;
2. Follow the steps of section 18.2 to access the internal
components;
3. Disconnect connector “B” (the connector that comes from
the display) from connector “A” (the connector that comes
from “Burner 1 (Master)”);
4. Disconnect all the other connectors from Burner 1 (Master)’s
control board;
5. Remove the control board of Burner 1 (Master) from the
boiler;
6. Follow points 3 to 5 to remove the control board from the
burner located lowest down;
7. Fit the board in place of that of Burner 1 (Master);
8. Restore all the connections to the new Burner 1 (Master)
board;
9. Move selector switch “S4” as shown in gure 18-11, from
the OFF position to the new ON position;
10. Take great care with the connectors of the board that’s
been removed. They must be isolated to avoid short circuits
and damage;
11. Isolate each of these connections electrically;
12. Replace the boiler casing;
13. Reconnect the electric power supply and turn on the
boiler’s general switch;
14. Access the forced menu, follow the steps of section 20 and
set all the parameters as shown in the “Burner 1 (Master)”
column. Parameter
compared to the previous status, because the boiler now
has one Slave Burner fewer.
15. Interrupt the electric power supply;
16. Reconnect the boiler’s electric power supply. Now Burner
1’s new control board is controlling the boiler.
3050 must be reduced by one unit
SELECTOR
SWITCH S4
A
OFF
ON
Figure 18-11 - Command board
020009.01.010_a
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18 - MAINTENANCE
Models
60T-70T
Models
280T
Models
180T-210T
Models
100T-115T-140T
Figure 18-12 Setting parameters 3001, 3050 and selectors S4
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18.10 - Emptying the boiler
1.- generate a request for heat by increasing the domestic hot
water and central heating temperature (in the MYDENS
version, if necessary also close the room thermostat link;
2.- wait for the burner to come on (in multi-burner versions wait
for all the burners to come on (see corresponding icons “L”
in gure 17-1 which all come on when all burners are on);
3.- switch the appliance o. In this way any motorised valves
present stay on);
4.- close the system ll valve provided by the installer;
5.- connect a exible rubber hose to the drain valves “38” in
Figures 3-3, 3-5 and 3-7 and use it for draining into a sink
drain or similar;
6.- wait for the water inside the boiler to cool to below approx.
40°C;
7.- slowly open the drain valves;
8.- Open the air vent valves of the heating elements. Start
from the highest central heating elements and continue
with the lowest.
9.- Once all of the water has been evacuated, close all of the
heating element vent valves and drain valves.
WARNING! Do not salvage and/or reuse the
water evacuated from the central heating circuit for any
purpose as it could be polluted.
18.11 - Minimum and maximum power
Operation can be forced at minimum maximum or ignition
power, proceed as follows:
1.- make sure that the heat generated by the boiler can be
dispersed by the system;
WARNING! If during forcing, the power supplied
by the boiler is much higher than the power absorbed by
the system, the boiler switches o continuously to reach
the maximum temperature allowed (93°C).
The same procedure as above can also be applied to multiburner boilers models from 100T to 280T but it must be
borne in mind that only one burner can be forced at a time,
moving the display from one burner to another, as described
in section 18.8.
18.12 - Checking the ionisation current
In any state of operation, even during minimum and maximum
power checks as described in section 18.11, it is possible
to consult the value of the ionisation current on parameter
1008 that appears in the “user menu” (section 17.14). This
value must be between 4 and 7 uA (microampere).
Since parameter 1008, on multi-burner boilers (models from
100T to 280T) relates to Burner 1 (Master), you must refer to
section 18.8 to do the check on the other burners.
18.13 - Checking combustion eciency
According to national laws on gas appliances, it is necessary
to periodically check the combustion eciency;
To do this, operate exactly as stated in section 16.8 and check,
along with the power, the combustion eciency, which must
be over the regulatory requirements.
WARNING! When forcing the delivery
temperature, it automatically sets itself at 93°C to
dispose of as much of the heat generated by the boiler
as possible. Check whether the system can support
this temperature.
2.- access parameter 2010 (2200 for multi-burner
models) located in the “installer menu” (see section 17.15);
3.- set the parameter at the following value:
a) Lo to force the burner, or all the burners, at minimum
power;
b) Ign to force the burner, or all the burners, at ignition
power;
c) High to force the burner, or all the burners, at
maximum power;
4.- To end forcing, return parameter 2010 (2200 for
multi-burner models) to the 0FF value and press the
RESET button.
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18 - MAINTENANCE
18.14 - Water temperature
measurement sensors
Various temperature sensors are positioned on the heat
exchanger body. The electrical resistance between the two
sensor contacts must correspond to gure 18-13.
The temperature sensors are: 1001, 1002, 1006
1007
and
18.15 - Outdoor temperature sensor
The outdoor temperature sensor 1004 (see section 13.1.4)
is tted as standard. The electrical resistance between the two
sensor contacts must correspond to that shown in gure 18-14.
Figure 18-13 - Water sensors curve
Figure 18-14 - Outdoor temperature sensor curve
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18.16 - Multi-wire wiring diagram
for models 60T and 70T
Figure 18-15 - Multi-wire wiring diagram part 1 - continues on next page
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18 - MAINTENANCE
Figure 18-15 - Multi-wire wiring diagram part 2 - continued from previous page
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18 - MAINTENANCE
18.17 - Multi-wire wiring diagram
for models 100T, 115T, 140T,
180T, 210T and 280T
Figure 18-16 - Multi-wire wiring diagram part 1 - continues on next page
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18 - MAINTENANCE
Figure 18-16 - Multi-wire wiring diagram part 2 - continues on next page
COSMOGAS
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Continues
60T - 280T
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18 - MAINTENANCE
Figure 18-16 - Multi-wire wiring diagram part 3 - continued from previous page
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18 - MAINTENANCE
Key to wiring diagrams gures 18-15 and 18-16
6 - Water outlet safety thermostat
7 - Water outlet temperature sensor
9 - Exhaust gases temperature sensor
10 - Exhaust gases temperature safety fuse
11 - Command and control board
Fuse - F1 5x20 3A
13 - Ignition electrodes
14 - Sparks generator
15 - Water inlet temperature sensor
16 - PWM modulating fan
17 - Back ue preventer valve (apper valve)
19 - Water pressure gauge
20 - Gas valve
22 - Detection electrode
28 - Exhaust gases dierential pressure switch
29 - Condensate level sensor
32 - General ON/OFF switch
34 - Display
35 - Board 885 IF (on request)
Fuse - F1 5x20 3A
47 - Water ow rate sensor
48 - 2-way motorised valve (on request)
50 - Primary heat exchanger temperature fuse
51 - Electrical connections board
Fuse - F1 5x20 10A
Fuse - F2 5x20 10A
Fuse - F3 5x20 3A
Fuse - F4 5x20 3A
Fuse - F6 5x20 3A
RGPR - Heating circuit pump relay
RGPS - Domestic hot water circuit pump relay
RPP1 - Primary circuit pump relay burner 1 (MASTER)
RPP2 - Primary circuit pump relay burner 2
RPP3 - Primary circuit pump relay burner 3
RPP4 - Primary circuit pump relay burner 4
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19 - TECHNICAL DATA
19.1 - MYDENS TECHNICAL DATA
MYDENS TECHNICAL DATA UM 60T 70T 100T 115T 140T 180T 210T 280T
Type (Type of ue gas exhaust/air intake) B23 ; B3P B23 ; B3P
Category II2H3P II2H3P II2H3P II2H3P II2H3P II2H3P II2H3P II2H3P
EU type approval certicate (PIN) 0476CR1272 0476CR1272 0476CR1272 0476CR1272 0476CR1272 0476CR1272 0476CR1272 0476CR1272
Range Rated Boiler APPROVED APPROVED APPROVED APPROVED APPROVED APPROVED APPROVED APPROVED
Central heating max. heat input “Qn” PCI (PCS) kW 57.8 (64.2) 69.9 (77.6) 99.0 (109.9) 115.6 (128.3) 140.0 (155.4) 173.4 (192.5) 210.0 (233.1) 280.0 (310.8)
Central heating min. heat input PCI (PCS) kW 12.0 (13.3) 14.7 (16.3) 12.0 (13.3) 12.0 (13.3) 14.7 (16.3) 14.7 (16.3) 14.7 (16.3) 14.7 (16.3)
Central heating max. useful output power (80/60) “Pn” kW 55.8 67.9 96.2 112.6 135.6 170.1 205.4 274.2
Eciency at 100% load (80/60) PCI (PCS) % 96.8 (87.2) 96.9 (87.3) 97.2 (87.5) 97.4 (87.7) 96.9 (87.3) 98.1 (88.3) 97.8 (88.1) 97.9 (88.2)
Min. useful output power (80/60) kW 11.5 14.1 11.5 11.5 14.1 14.1 14.1 14.1
Eciency at min. useful output power (80/60) % 95.9 (86.4) 96.2 (86.7) 95.9 (86.4) 95.9 (86.4) 96.2 (86.7) 96.2 (86.7) 96.2 (86.7) 96.2 (86.7)
Central heating max. useful output power (50/30) kW 60.7 73.5 104.0 121.4 147.1 182.2 220.7 294.3
Eciency at central heating max. useful output power (50/30) PCI (PCS) % 105.0 (94.6) 105.1 (94.7) 105.0 (94.6) 105.0 (94.6) 105.1 (94.7) 105.1 (94.7) 105.1 (94.7) 105.1 (94.7)
Min. useful output power (50/30) kW 12.8 15.6 12.8 12.8 15.6 15.6 15.6 15.6
Eciency at min. useful output power (50/30) PCI (PCS) % 106.6 (96.0) 106.3 (95.8) 106.6 (96.0) 106.6 (96.0) 106.3 (95.8) 106.3 (95.8) 106.3 (95.8) 106.3 (95.8)
Eciency at 30% of the load PCI (PCS) % 106.3 (95.7) 106.4 (95.8) 108.0 (97.3) 107.5 (96.8) 107.0 (96.4) 108.0 (97.3) 106.8 (96.2) 108.8 (98.0)
Losses at the chimney, burner ON (80/60) % 1 1 1 1 1 1 1 1
Losses at the chimney, burner OFF % 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Losses at the casing, burner ON (80/60) % 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1
Losses at the casing, burner OFF % 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05
3
Gas ow rate
Gas supply pressure
Gas supply minimum pressure
Gas supply maximum pressure
Primary heat exchanger water content l 4.6 5.7 9.2 9.2 11.4 17.1 17.1 22.8
Minimum operating water ow rate with motorised valves l/h / / 2400 2400 2700 2700 2700 2700
Minimum operating water ow rate without motorised valves l/h 2400 2700 4800 4800 5400 8100 10800 10800
DHW adjustment range with storage tank °C 40 - 60 40 - 60 40 - 60 40 - 60 40 - 60 40 - 60 40 - 60 40 - 60
Maximum temperature for safety intervention °C 95 95 95 95 95 95 95 95
Maximum central heating temperature °C 80 80 80 80 80 80 80 80
Minimum central heating temperature °C 20 20 20 20 20 20 20 20
Maximum central heating pressure “PMS” bar 11 11 11 11 11 11 11 11
Minimum central heating pressure bar 1 1 1 1 1 1 1 1
Rated power supply voltage V 230 230 230 230 230 230 230 230
Rated power supply frequency Hz 50 50 50 50 50 50 50 50
Absorbed electrical power W 110 150 220 220 300 430 430 590
Electrical protection rating IP21 IP21 IP21 IP21 IP21 IP21 IP21 IP21
G20 m
G31 kg/h 4.49 5.43 7.68 8.97 10.87 13.50 16.30 21.73
G20 mbar 20 20 20
G31 mbar 37 37 37 37 37 37 37 37
G20 mbar 10 10 10
G31 mbar 10 10 10 10 10 10 10 10
G20 mbar 45 45 45
G31 mbar 45 45 45 45 45 45 45 45
/h 6.11 7.39 10.47 12.22 14.80 18.30 22.20 29.61
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19 - TECHNICAL DATA
19.1 - MYDENS TECHNICAL DATA
20 20 20 20 20
10 10 10 10 10
45 45 45 45 45
COSMOGAS
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19 - TECHNICAL DATA
19.1 - MYDENS TECHNICAL DATA
MYDENS TECHNICAL DATA UM 60T 70T 100T 115T 140T 180T 210T 280T
Burner electrical power W 110 150 220 220 300 430 430 590
Air intake and ue gas exhaust pipe diameter (split) mm 11 0 110 110 110 110 160 160 160
Max. length of ue gas outlet duct (split) m 10 10 10 10 10 10 10 10
Air intake pipe max. length (split) m 10 10 10 10 10 10 10 10
Equivalent length of a bend m 4 4 4 4 4 4 4 4
Weighted CO (0% O2) G20 ppm 30 27 30 30 27 27 27 27
Weighted NOx (0% O2) (Class 6 EN 15502) PCS G20 mg/kWh 34 34 34 34 34 34 34 34
CO2 (%) at minimum/maximum power
O2 (%) at minimum/maximum power
Maximum recirculation of ue gas permitted in windy conditions % 10 10 10 10 10 10 10 10
Maximum ue gas temperature at boiler outlet °C 80 80 80 80 80 80 80 80
Minimum ue gas temperature at boiler outlet °C 30 30 30 30 30 30 30 30
Δt fumes temperature/Return (at 100% of the load) (80/60) °C 20 24 20 20 24 24 24 24
Δt fumes temperature/Return (at 30% of the load) (37/30) °C 7 7 7 7 7 7 7 7
Maximum CO in exhaust fumes ppm 250 250 250 250 250 250 250 250
Mass ow of fumes at maximum power g/s 27.1 32.9 46.6 54.4 65.8 81.6 98.7 131.7
Mass ow of fumes at minimum power g/s 5.8 7.1 5.8 5.8 7.1 7.1 7.1 7.1
Hydraulic head available at outlet Pa 11 0 110 11 0 110 110 110 110 11 0
Maximum temperature of the combustion agent air °C 40 40 40 40 40 40 40 40
Maximum CO2 content in the combustion agent air % 0.9 0.9 0.9 0.9 0.9 0.9 0.9 0.9
Maximum fumes temperature for overheating °C 95 95 95 95 95 95 95 95
Max. negative pressure allowed in the ue gas exhaust/air intake system Pa 11 0 110 11 0 110 110 110 11 0 11 0
Condensate maximum ow rate l/h 7.3 8.8 12.4 14.5 17.6 21.8 26.3 35.1
Condensate average acidity pH 4 4 4 4 4 4 4 4
Operating room temperature °C 0.5 ; + 50 0.5 ; + 50 0.5 ; + 50 0.5 ; + 50 0.5 ; + 50 0.5 ; + 50 0.5 ; + 50 0.5 ; + 50
Boiler weight (empty) kg 96 98 142 142 147 211 211 249
G20 % 8.5 / 8.7 8.5 / 8.7 8.5 / 8.7
G31 % 9.8 / 10.2 9.8 / 10.2 9.8 / 10.2 9.8 / 10.2 9.8 / 10.2 9.8 / 10.2 9.8 / 10.2 9.8 / 10.2
G20 % 5.8 / 5.4 5.8 / 5.4 5.8 / 5.4
G31 % 6.0 / 5.4 6.0 / 5.4 6.0 / 5.4 6.0 / 5.4 6.0 / 5.4 6.0 / 5.4 6.0 / 5.4 6.0 / 5.4
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COSMOGAS60T - 280T
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