COSMOGAS AGUAPLUS 60 User manual

62403705 - R01 29-01-2021_UK
INSTALLATION,
USE AND MAINTENANCE
MANUAL
60
70
100
115
140
FLOOR STANDING
CONDENSING WATER HEATER
WITH STORAGE TANK
AGUAPLUS

2COSMOGASAGUAPLUS
Explosive or highly flammable
products
Do not store or use explosive or highly
flammable 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 qualified
technician.
Qualied installer: qualied installer
is an individual with specic, technical
training in space heating systems,
domestic hot water systems, fuel
gas systems and electrical systems.
This individual must have the legally
required qualications.
Installation and Modications: Only
a Qualied installer 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.
Flue gas/air intake:
- You are only permitted to operate
this appliance with the combustion
air/ue gas system that has been
specically 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 venting to an existing
vent system, if it is shared with other
appliances.
- Do not restrict or seal any air intake or
outlet openings (terminals).
Hazards and Your Safety - Hot Water Can
Scald! Water temperature over 125°F
(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.
Installer: Read all instructions,
including this manual, before
installing. Perform steps in the order
given.
User: This manual is for use only by
a qualied heating installer. Refer to
the User’s Information section for
your reference.
Maintenance: at least once a year the
user must call a Qualied installer for
routine maintenance.
If you smell gas
1. - Close the gas valve.
2. - Ventilate the room.
3. - Do not switch on any electric device,
telephone included.
4. - From another room, call a
professionally qualied technician
immediately or the gas supply
company. Call the Fire Service if the
former are not available.
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 qualified and trained
to service the specific 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 flashing light if carbon
monoxide is detected or a more
sophisticated version which will also
switch o󰀨 the appliance to provide
more safety.
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 licensed authorized technician
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.
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.

3AGUAPLUS
COSMOGAS
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
not be installed on carpeting.
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
exclusively by a Qualied installer
using original spare parts.
Installation, modications
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
qualied technician.
The end user must have maintenance
performed on the appliance only by
professionally qualied technicians
in accordance with this manual and
in full compliance with both local and
national standards.
Before performing any cleaning
or maintenance, disconnect the
appliance from the mains power
supply.
After 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 qualied 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.
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.

4COSMOGASAGUAPLUS
TABLE OF CONTENTS
SAFETY INSTRUCTIONS ...................................................................................................................................2
1 - CODE REQUIREMENTS................................................................................................................................6
1.1 - National laws and regulations .................................................................................................................................. 6
2 - GENERAL INFORMATION.............................................................................................................................7
2.1 - Presentation ............................................................................................................................................................. 7
2.2 - Overview of the models............................................................................................................................................ 7
2.3 - Accessories .............................................................................................................................................................. 7
2.4 - Manufacturer ............................................................................................................................................................ 7
2.5 - Meaning of symbols used ........................................................................................................................................ 7
2.6 - Maintenance............................................................................................................................................................. 7
2.7 - Disposal ................................................................................................................................................................... 7
3 - MAIN COMPONENTS ....................................................................................................................................8
4 - OPERATION ................................................................................................................................................. 16
4.1 - Operation and intended use................................................................................................................................... 18
4.1.1 - Operation and intended use...................................................................................................................... 18
4.1.2 - Pump......................................................................................................................................................... 18
4.1.3 - Types of system ........................................................................................................................................ 18
4.2 - Precautions for installation ..................................................................................................................................... 18
4.3 - Anti-legionella......................................................................................................................................................... 18
5 - INSTALLATION - Place of installation ....................................................................................................... 19
5.1 - Choosing the installation location........................................................................................................................... 19
5.1.1 - Requirements for correct ventilation ......................................................................................................... 20
5.1.2 - Prevent combustion air contamination...................................................................................................... 20
6 - INSTALLATION - Setup ............................................................................................................................... 21
6.1 - Setup...................................................................................................................................................................... 21
6.1.1 - Moving the appliance ................................................................................................................................ 21
6.1.2 - Opening the package................................................................................................................................ 21
6.1.3 - Lifting the appliance .................................................................................................................................. 21
7 - INSTALLATION - Dimensions and minimum distances to respect......................................................... 22
7.1 - Dimensions and minimum distances to respect..................................................................................................... 22
8 - INSTALLATION - Plumbing......................................................................................................................... 23
8.1 - Water connections.................................................................................................................................................. 23
8.2 - Gas......................................................................................................................................................................... 23
8.3 - Temperature and pressure Relief valve ................................................................................................................. 24
8.4 - Installation example ............................................................................................................................................... 25
8.5 - Expansion tank....................................................................................................................................................... 26
8.6 - System sizing ......................................................................................................................................................... 26
9 - INSTALLATION - Condensate disposal ..................................................................................................... 27
9.1 - Condensate drain................................................................................................................................................... 27
10 - INSTALLATION - Electrical connections ................................................................................................. 28
10.1 - Electrical connections .......................................................................................................................................... 28
10.1.1 - Connecting power supply cable .............................................................................................................. 28
10.2 - Connecting the appliance in cascade .................................................................................................................. 29
11 - INSTALLATION - Air intake and ue exhaust ducts ............................................................................... 30
11.1 - Flue exhaust and combustion air intake duct ....................................................................................................... 30
11.1.1 - B23 and B23P air intake/ue discharge type .......................................................................................... 30
11.1.2 - Flue exhaust............................................................................................................................................ 31
12 - INSTALLATION - External cover .............................................................................................................. 32
12.1 - Installation of external cover ................................................................................................................................ 32
13 - START-UP................................................................................................................................................... 37
13.1 - Start-up ................................................................................................................................................................ 37
13.1.1 - Instructions to the user............................................................................................................................ 37
13.1.2 - Filling the condensate outlet siphon........................................................................................................ 37
13.2 - General warnings on gas supply.......................................................................................................................... 38
13.3 - Conrm the appliance gas type............................................................................................................................ 38
13.4 - Conversion of appliance models 60 and 70 from one type of gas to another ...................................................... 39
13.5 - Conversion of appliance models from 100 to 140 from one type of gas to another............................................. 41
13.6 - Ignition.................................................................................................................................................................. 43
13.7 - Check gas supply pressure and make any necessary adjustment ...................................................................... 43
13.8 - Checking CO2 level ............................................................................................................................................. 44

5AGUAPLUS
COSMOGAS
13.8.1 - Checking CO2 level on units models 60 and 70 ..................................................................................... 44
13.8.2 - Checking CO2 level and any adjustments on appliance models from 100 up to 140............................. 45
13.9 - Checking appliance output heat........................................................................................................................... 45
13.10 - Minimum water ow rate .................................................................................................................................... 45
14 - USE............................................................................................................................................................. 46
14.1 - Checking water pressure ..................................................................................................................................... 46
14.2- General information............................................................................................................................................... 46
14.3 - Display ................................................................................................................................................................. 46
14.4 - Ignition and shutdown procedure ......................................................................................................................... 47
14.5 - Temperature adjustment ...................................................................................................................................... 47
14.6 - Antifreeze protection ............................................................................................................................................ 47
14.7 - Energy Saving...................................................................................................................................................... 47
14.8 - “User menu” ......................................................................................................................................................... 48
14.9 - “Installer menu” .................................................................................................................................................... 49
14.10 - Diagnostics......................................................................................................................................................... 50
14.10.1 - Diagnostics: “Loc” lock.......................................................................................................................... 51
14.10.2 - Diagnostics: “Err” errors........................................................................................................................ 53
15 - MAINTENANCE.......................................................................................................................................... 55
15.1 - General warnings ................................................................................................................................................. 55
15.1.1 - Gas leak check ....................................................................................................................................... 55
15.1.2 - Making sure the air intake and ue exhaust ducts are in good conditions.............................................. 55
15.1.3 - Checking the system water pressure...................................................................................................... 55
15.1.4 - Checking the ignition and detection electrodes ..................................................................................... 55
15.1.5 - Checking the magnesium anode ........................................................................................................... 55
15.2 - Disassembling the casing and accessing the inner components......................................................................... 56
15.3 - Disassembling the burner fan unit........................................................................................................................ 56
15.4 - Cleaning the burner and the primary exchanger, ue gas side............................................................................ 57
15.4.1 - Heat insulators ........................................................................................................................................ 59
15.5 - Positioning the ignition and ionisation electrodes properly ................................................................................. 59
15.6 - Cleaning the air intake lter.................................................................................................................................. 60
15.7 - Condensate drain system maintenance and cleaning ......................................................................................... 60
15.8 - Connecting the Display to the other burners........................................................................................................ 61
15.9 - How to move a control board ............................................................................................................................... 62
15.10 - Emptying the appliance...................................................................................................................................... 64
15.11 - Minimum and maximum output heat ................................................................................................................. 64
15.12 - Checking the ionisation current.......................................................................................................................... 64
15.13 - Checking combustion performance.................................................................................................................... 64
15.14 - Temperature and water measurement probes ................................................................................................... 65
15.15 - 60 and 70 models multi-line wiring diagram....................................................................................................... 66
15.16 - 100, 115 and 140 models multi-line wiring diagram ........................................................................................... 68
16 - TECHNICAL FEATURES ........................................................................................................................... 72
17 - FORCED MENU.......................................................................................................................................... 74
18 - CONTROL MENU DIAGRAM..................................................................................................................... 76
19 - PRODUCT FICHE....................................................................................................................................... 77
20 - UE DECLARATION OF CONFORMITY ..................................................................................................... 78
TABLE OF CONTENTS

6COSMOGASAGUAPLUS
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
qualied 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.
- BS 5546:2010 - Specication for installation and maintenance
of gas-fired water-heating appliances of rated input not
exceeding 70 kW net.
- BS 5440-2:2009 - Flueing and ventilation for gas appliances
of rated input not exceeding 70 kW net (1st, 2nd and 3rd family
gases) specication for the installation and maintenance of
ventilation provision for gas appliances.
- BS 6644:2011 - Specification for the installation and
maintenance of gas-red hot water boilers of rated inputs
between 70 kW (net) and 1.8 MW (net) (2nd and 3rd family
gases).
- BS 6891:2005+A2:2008 - Installation of low pressure gas
pipework of up to 35 mm (R1 1/4) in domestic premises (2nd
family gas) specication.
- BS 5482-1:2005 - Code of practice for domestic butane and
propane gas burning installations. Installations at permanent
dwellings, residential park homes and commercial premises,
with installation pipework sizes not exceeding DN 25 for steel
and DN 28 for 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.
- Gas safety (Installation and Use) Regulations current issue.
- BS 6700 - Design, installation, testing and maintenance of
services supplying water for domestic use within buildings
and their cartilages - Specication.
- UK Health and safety at work Act.
- All relevant Building Regulations.
- Local Water 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.
1 - CODE REQUIREMENTS

7AGUAPLUS
COSMOGAS
2.1 - Presentation
Congratulations! This appliance is truly one of the best products on the market.
Each individual part was designed, created, tested and assembled with pride at the COSMOGAS factory,
therefore guaranteeing the best quality control.
2.2 - Overview of the models
AGUAPLUS XXX
“60” = Floor standing appliance with 60kW maximum heat output;
“70” = Floor standing appliance with 70kW maximum heat output;
“100” = Floor standing appliance with 100kW maximum heat output;
“115” = Floor standing appliance with 115kW maximum heat output;
“140” = Floor standing appliance with 140kW maximum heat output;
“AGUAPLUS” = Indoor gas condensing water heater with low emission pre-
mixed burner and storage tank.
2 - GENERAL INFORMATION
2.3 - Accessories
Accessories, in some models, could be not supplied with
the appliance.
Amount No. Description Code Figure
No. 1 60, 100 AND 115 NATURAL GAS-LPG CONVERSION KIT. 62630197
70, 140, 180, 210 AND 280 NATURAL GAS-LPG CONVERSION KIT. 62630198
No. 4 ADJUSTABLE FEET 60805006
No. 1 10KG BAG OF CONDENSATE NEUTRALIZER 62801022
2.4 - Manufacturer
COSMOGAS srl
Via L. da Vinci 16
47014 - Meldola (FC) Italy
Tel. [phone]
Fax. [phone]
www.cosmogas.com
[email protected]
2.5 - Meaning of symbols used
WARNING !!!
Failure to follow this indication can cause an electrical shock
which can result in personal injury or death!
WARNING !!!
Failure to follow this indication can cause an explosion, re,
extensive property damage, severe personal injury ore death.
Symbol indicating important instruction.
2.6 - Maintenance
A regular annual maintenance (see section 15) on the
appliance is advised for the following reasons:
- to maintain high performance and reduce fuel consumption;
- to achieve an high standard of safety;
- to maintain an high level of environmental compatibility of
the combustion.
O󰀨er your customer a periodic maintenance contract.
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, so that any substances that are dangerous for the
environment can be removed and disposed of safely. 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 units, users can contact the public service in charge
or retailers.

8COSMOGASAGUAPLUS
1 - Air/gas mixing group
2 - Gas valve
3 - Air inlet manifold
4 - High limit temperature switch
5 - Hot water temperature sensor
6 - Supply connection
7 - Hot water outlet pipe
8 - Gasket
9 - Heat exchanger
10 - Return connection
11 - Support ttings
12 - ----------
13 - Water pressure sensor (present in burner 1 MASTER)
14 - Spark generator
15 - Ignition cables
16 - Water ow rate
17 - ----------
18 - Water inlet pipe
3 - MAIN COMPONENTS
Figure 3-1 - Internal components
8
9
18
15
7
16
6
14
10
11
5
13
134 2
8
9
18
15
7
16
6
14
10
11
5
13
134 2
020021.01.004

9AGUAPLUS
COSMOGAS
19 - Burner
20 - Burner unit condensate drain
21 - Detection electrode
22 - Heat insulator
23 - Sight glass
24 - Fan-burner connection
25 - Fan
26 - Water inlet temperature sensor
27 - Left ignition electrode
28 - Right ignition electrode
29 - ----------
30 - Gasket
31 - Flapper valve
32 - Flapper magnet
33 - Flapper sensor
3 - MAIN COMPONENTS
Figure 3-2 - Internal components
32
24
33 31
25
020009.01.005_a
7
20 21 19
28
27
30
26
222324
18
25
7
20 21 19
28
27
30
26
222324
18
25
020021.01.005

10 COSMOGASAGUAPLUS
1 - Leveling feet
2 - Drain valve
3 - Hot water tank temperature sensor
4 - Anode
5 - 120 litre storage tank, 50.8 mm thick and “R”=0.0383 W/
mK thermal insulation
6 - Flue exhaust condensate drain pipe
7 - Condensate drain pipe
8 - Condensate neutralizer box
9 - Hot water outlet pipe
10 - Burner “1” (MASTER)
12 - Gas inlet pipe
13 - Air inlet connection
14 - Electrical cable passage
15 - Air lter
16 - 885 IF board (present only in some models)
17 - Flue exhaust connections
18 - Electrical connections
19 - Electrical board
20 - Blocked ue pressure switch
21 - Control panel
23 - “Burner 1” control board
24 - Front cover
25 - Bottom front cover
3 - MAIN COMPONENTS
Figure 3-3 - Internal compents of 60 and 70 models
7
14
25
17
9
1
24
10
12
20
2
13
35
8
15
6
19
23
4
1816
21
020021.01.001

11 AGUAPLUS
COSMOGAS
26 - Top cover
27 - Main electrical switch
28 - Fan covering
29 - Flue gas temperature sensor
30 - High limit ue gas temperature fuse
31 - Water inlet pipe
32 - Flue gas exhaust manifold
33 - Condensate blocked drain switch
43 - Heat exchanger temperature fuse
3 - MAIN COMPONENTS
Figure 3-4 - Internal components of 60 and 70 models
31
26
29
33
32
43
30
28
27
020021.01.002

12 COSMOGASAGUAPLUS
34 - Gas connection
35 - P/T Safety relief valve
36 - ----------
37 - Condensate drain
38 - ----------
39 - Hot water outlet
40 - Cold water inlet
41 - Pump
3 - MAIN COMPONENTS
Figure 3-5 - Internal components of 60 and 70 models
39
41
40
35
34
37
020021.01.012

13 AGUAPLUS
COSMOGAS
3 - MAIN COMPONENTS
Figure 3-6 - Internal components of 100, 115 and 140 models
1
25
14
7
9
9
13
10
2
17
24
12
11
35
6
8
15
4
23
18 19
20
22
16
21
020022.01.001
1 - Leveling feet
2 - Drain valve
3 - Hot water tank temperature sensor
4 - Anode
5 - 120 litre storage tank, 50.8 mm thick and “R”=0.0383 W/
mK thermal insulation
6 - Flue exhaust condensate drain pipe
7 - Condensate drain pipe
8 - Condensate neutralizer box
9 - Hot water outlet pipe
10 - Burner “1” (Master)
11 - Burner “2”
12 - Gas inlet pipe
13 - Air inlet connection
14 - Electrical cable passages
15 - Air lter
16 - 885 IF board (present only in some models)
17 - Flue exhaust connections
18 - Electrical connections
19 - Electrical board
20 - Blocked ue pressure switch
21 - Control panel
22 - Burner “2” control board
23 - Burner “1” control board (Master)
24 - Front cover
25 - Bottom front cover

14 COSMOGASAGUAPLUS
3 - MAIN COMPONENTS
Figure 3-7 - Internal components of 100, 115 and 140 models
31
31
26
29
29
30
33
32
43
43
30
28
28
27
020022.01.002
BURNER 2
BURNER 1
(Master)
26 - Top cover
27 - Main electrical switch
28 - Fan covering
29 - Flue gas temperature sensor
30 - High limit ue gas temperature fuse
31 - Water inlet pipe
32 - Flue gas exhaust manifold
33 - Condensate blocked drain switch
43 - Heat exchanger temperature fuse

15 AGUAPLUS
COSMOGAS
3 - MAIN COMPONENTS
Figure 3-8 - Internal components of 100, 115 and 140 models
34 - Gas connection
35 - P/T Safety relief valve
36 - ----------
37 - Condensate drain
38 - ----------
39 - Hot water outlet
40 - Cold water inlet
41 - Pump
39
40
35
41
35
34
37
020022.01.015

16 COSMOGASAGUAPLUS
4 - OPERATION
Figure 4-1 key:
1 - Air intake
2 - Flue exhaust
3 - Safety relief valve
4 - ----------
5 - Sealed chamber
6 - High limit temperature switch
7 - Hot water temperature sensor
8 - CRV heat exchanger
9 - Water pressure sensor
10 - Flue gas temperature sensor
11 - High limit ue gas temperature fuse
12 - Blocked ue pressure switch
13 - Ignition electrodes
14 - Pre-mixed burner
15 - Detection electrode
16 - Spark generator
17 - Water inlet temperature sensor
18 - Flapper valve
19 - Fan
20 - Gas valve
22 - Water ow meter
23 - Condensate blocked drain switch
24 - Condensate siphon
25 - Condensate neutralizer box
26 - Gas inlet
27 - Condensate drain
29 - Anode
30 - Stainless steel hot water tank
31 - Water outlet
32 - Pump
33 - Temperature sensor
34 - Cold water inlet
35 - Drain valve
36 - Primary heat exchanger temperature fuse
Figure 4-1 - Functional schematic for models 60 and 70

17 AGUAPLUS
COSMOGAS
4 - OPERATION
Figure 4-2 - Functional schematic for models 100, 115 and 140
Figure 4-2 key:
1 - Air intake
2 - Flue exhaust
3 - Safety relief valve
4 - ----------
5 - Sealed chamber
6 - High limit temperature switch
7 - Hot water temperature sensor
8 - CRV heat exchanger
9 - Water pressure sensor
10 - Flue gas temperature sensor
11 - High limit ue gas temperature fuse
12 - Blocked ue pressure switch
13 - Ignition electrodes
14 - Pre-mixed burner
15 - Detection electrode
16 - Spark generator
17 - Water inlet temperature sensor
18 - Flapper valve
19 - Fan
20 - Gas valve
22 - Water ow meter
23 - Condensate blocked drain switch
24 - Condensate siphon
25 - Condensate neutralizer box
26 - Gas inlet
27 - Condensate drain
29 - Anode
30 - Stainless steel hot water tank
31 - Water outlet
32 - Pump
33 - Temperature sensor
34 - Cold water inlet
35 - Drain valve
36 - Primary heat exchanger temperature fuse

18 COSMOGASAGUAPLUS
4.1 - Operation and intended use
4.1.1 - Operation and intended use
The product is a gas red condensing appliance designed
to heat domestic hot water for civil uses (see Figure 8-2).
Any other use is forbidden.
4.1.2 - Pump
The appliance is provided with a pump that transfers the heat
generated by the burner to the hot water tank.
4.1.3 - Types of system
The following types of system con be created with this
appliance:
- System solely for the production of domestic hot water (see
Figure 8-2).
4.2 - Precautions for installation
For the appliance to work well, respect the follow indications:
It must be connected to a domestic hot water distribution
system, compatibly with the features, performance and
output of the appliance itself.
Check Figure 7-1 regarding minimum distances to be
observed for installation and future maintenance.
4.3 - Anti-legionella
The appliance does not have protection against legionella.
It is the installer’s responsibility to keep the storage tank
temperature higher than 60°C to disinfect it or adopt equivalent
systems.
4 - OPERATION

19 AGUAPLUS
COSMOGAS
5.1 - Choosing the installation location
WARNING !!! Do not store any ammable
material in the immediate vicinity of the appliance.
WARNING !!! Do not install the appliance on
carpet.
WARNING !!! The appliance must be installed
in a room in which it can be supplied with air for
ventilation and combustion, regardless whether it is
taken from the outside (sealed combustion) or from
inside (combustion ventilated room).
WARNING !!! Inadequate ventilation of
appliance can cause elevated air temperatures.
5 - INSTALLATION - Place of installation
WARNING !!! Make sure that the intake and
outlet openings are the right sized and that there are
no obstructions or blockages. If the problem cannot be
resolved, do not start up the appliance.
WARNING !!! LP gas Liqueed Petroleum gas -
Installation requires special attention: LP gas appliances
must not be installed in pits, cellars or similar locations
where the gas, which is heavier than air, could stagnate.
Appliances with this kind of fuel must not be installed in
spaces under the level of the oor or cellars.
WARNING !!! The appliance must only be
installed on solid oor, which takes its weight and its
level.
Before installation, carefully wash out the system to remove
any possible residues or impurities that might compromise
operation of the appliance itself.
This appliance is not designed for direct outdoor
installation. It must not be exposed to temperatures
below zero or above 50°C. Choose a location inside the
home or, in any case, sheltered from elements like rain,
wind, sun and, especially, frost.
This appliance must be installed in a location so that any
water leaking from the appliance or piping connections
or relief valve opening will not cause damage to the area
surrounding the unit or any lower oor in the structure.
Determine the room and the right position for installation,
taking the following factors into account:
- connection to ue exhaust/air intake ducts;
- connection to gas pipe;
- water supply connection;
- domestic hot water system connection;
- electrical connection;
- connection to condensate drain;
- safety valve discharge connection;
- room ventilation.
Figure 5-1 Undoing transport pallet screws
E
E
E
D
E
E
E
C BA
020021.01.006
F GG F GG
020021.01.007

20 COSMOGASAGUAPLUS
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) conguration, 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.
WARNING! There must never be negative
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! Extractors or similar devices for the
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.
5.1.2 - Prevent combustion air
contamination
Do not terminate vent/air in locations that can allow
contamination of combustion air.
WARNING !!! Contaminated combustion air will
damage the appliance .
Ensure the combustion air will not contain any of the following
contaminats.
Product that may contaminate the air combustion:
- Chlorinated waxes/cleaners;
- Chlorine-based swimming pool chemical;
- Calcium chloride used for thawing;
- Sodium chloride used for water softening;
- Refrigerant leaks;
- Paint or varnish removers;
- Hydrochloric acid/muratic 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;
5 - INSTALLATION - Place of installation
Figure 5-2 Example of ventilation
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).