Astral Pool WATERHEAT 43506 User guide

WATERHEAT HEAT EXCHANGER
TECHNICAL MANUAL. START-UP AND OPERATION · MANUAL TÉCNICO. ARRANQUE Y FUNCIONAMENTO ·MANUEL
TECHNIQUE. MISE EN ROUTE ET FONCTIONNEMENT · TECHNISCHES HANDBUCH. INBETRIEBNAHME UND BETRIEBSWEISE ·
MANUALE TECNICO. AVVIAMENTO E FUNZIONAMENTO · MANUAL TÉCNICO. ARRANQUE E FUNCIONAMENTO
CODE: 05470205
EDITION: 13
REFERENCES
43506 (TIT-20 KW EQ)
43507 (TIT-40 KW EQ)
43508 (TIT-60 KW EQ)

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TABLE OF CONTENTS……….………………………………………………ENGLISH
1. SAFETY ................................................................................................................................... 6
1.1. HEAT EXCHANGER HANDLING RISKS ............................................................................. 6
1.2. SAFETY INSTRUCTIONS AND INFORMATION.................................................................. 6
1.3. GENERAL USE................................................................................................................. 7
1.4. DANGER SITUATIONS..................................................................................................... 7
1.5. SAFETY RULES IN THE INSTALLATION ............................................................................ 8
2. TECHNICAL DATA ................................................................................................................... 8
2.1. HEAT EXCHANGER ......................................................................................................... 8
3. INSTALLATION/ASSEMBLY ..................................................................................................... 8
3.1. TRANSPORTATION/STORAGE......................................................................................... 8
3.2. ASSEMBLY DIMENSIONS ................................................................................................ 8
3.3. INSTALLATION................................................................................................................ 9
3.4. HEAT EXCHANGER CONNECTIONS................................................................................. 9
3.5. HEAT EXCHANGER CONNECTION TO A FILTER/PUMP CIRCULATING SYSTEM............. 10
3.6. HEAT EXCHANGER CONNECTION TO A FILTER CIRCULATING SYSTEM ........................ 10
3.7. INSTALATION ............................................................................................................... 10
4. ELECTRICAL DIAGRAM ......................................................................................................... 11
5. START UP AND OPERATION ................................................................................................. 12
6. CONTROLLER ....................................................................................................................... 13
7. MAINTENANCE / FIXING ...................................................................................................... 17
7.1. HIBERNATION OF THE HEAT EXCHANGER IN FREE OF ICE SPACES.............................. 17
7.2. HIBERNATION OF THE HEAT EXCHANGER IN ICY SPACES ............................................ 17
7.3. Water-water heat exchanger in vertical position ........................................................ 17
7.4. Water-water heat exchanger in horizontal position.................................................... 17
8. TROUBLE SHOOTING ........................................................................................................... 17
9. EXPLODED VIEW .................................................................................................................. 18
10. PRODUCT RECYCLING ...................................................................................................... 20
11. WARRANTY CERTIFICATE ................................................................................................. 20

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LISTA DE CONTENIDOS……….……………………………………..……ESPAÑOL
1. SEGURIDAD.......................................................................................................................... 22
1.1. Riesgos en el manejo del intercambiador de calor...................................................... 22
1.2. Instrucciones e información relativas a seguridad....................................................... 22
1.3. Uso general.................................................................................................................. 23
1.4. situaciones de peligro.................................................................................................. 23
1.5. Medidas de seguridad en el lugar de instalación......................................................... 24
2. DATOS TECNICOS................................................................................................................. 24
2.1. INTERCAMBIADOR DE CALOR ...................................................................................... 24
3. Instalación / Montaje........................................................................................................... 24
3.1. Transporte / Almacenamiento..................................................................................... 24
3.2. Medidas para el montaje y conexión........................................................................... 24
3.3. Instalación ................................................................................................................... 25
3.4. Conexión del intercambiador de calor......................................................................... 25
3.5. Conexión del intercambiador de calor a un sistema de circulación de filtro/bomba .. 26
3.6. Conexión del intercambiador de calor a un sistema de filtro ...................................... 26
3.7. INSTALACION ............................................................................................................... 26
4. Conexión ELECTRICA............................................................................................................ 27
5. PUESTA EN MARCHA / FUNCIONAMIENTO ......................................................................... 29
6. REGULADOR......................................................................................................................... 29
7. MANTENIMIENTO / REPARACIÓN........................................................................................ 33
7.1. Hibernación del intercambiador de calor en espacios libres de hielo ......................... 33
7.2. Hibernación del intercambiador de calor en espacios en donde haya hielo ............... 33
7.3. Intercambiador de calor en disposición vertical .......................................................... 33
7.4. Intercambiador de calor en disposición horizontal...................................................... 33
8. DETECCIÓN Y SOLUCIÓN DE AVERÍAS.................................................................................. 34
9. VISTA EXPLOSIONADA.......................................................................................................... 34
10. RECICLAJE DEL PRODUCTO .............................................................................................. 36
11. CERTIFICADO DE GARANTÍA ............................................................................................ 37

WATERHEAT SERIES · WATER/WATER SYSTEM
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IT IS SUGGESTED THAT NOTE BE MADE OF THE FOLLOWING DATA
INSTALLER COMPANY
DATE
TELEPHONE
MODEL
SERIAL NUMBRE
DEALER`S STAMP
INSTALLER`S STAMP
1. SAFETY
1.1. HEAT EXCHANGER HANDLING RISKS
This equipment has been made using modern technology and following current safety good
practices. In spite of this, some risks could appear due to bad manipulations or uses. To avoid
that, the installer must follow the installation procedures that are included in this manual and use
this device for what was designed.
It is for your safety!
1.2. SAFETY INSTRUCTIONS AND INFORMATION
Next instructions relative to safety use next symbols:
It means direct health risk. If this information is not followed It could lead to
serious injuries
It means that it could lead to health risk. If this information is not followed It
could damage people health
It means that it could lead to health risk. If this information is not followed It
could lead to damage people or things
It means that this issue contains important information for using correctly the
device.
If this information is not followed the device or the enviroment could be
damaged.
DANGER
CARE
PRECAUTION
Please, read this manual carefully in order to: make a successful installation and start-up,
know the total potential of the machine, and take into account all the needed
circumstances for a proper and long-lasting performance.

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1.3. GENERAL USE
The heat exchanger has been only designed to heat the pool water by means of a boiler.
The flow rate of water entering the heater must not exceed:
Heating element (MAIN) 10 bar máx.
Pool water (SECONDARY) 3 bar máx.
A higher flow rate will require the installation of a by-pass to prevent damage to the element(s).
¡Important!
A good use of this device it also means:
Follow all the information included in the installation instructions and, follow
inspection and maintenance instructions.
Any other application will not be considered as normal use. The manufacturer will not be then
responsible for any damage that it could appear.
Other uses could be only possible after the manufacturer’s agreement and approval.
Changes and adaptations are forbidden due to safety reasons.
1.4. DANGER SITUATIONS
The heater could lead to danger situations if:
Working pressure is higher than 3 bars for pool water and 10 bars for boiler.
Then leakages could appear with danger of burns.
Boiler side connections could reach 100ºC. The heater could reach this
temperature if it is not completely full of pool water.
Plastic piping could suffer thermal stresses that could lead to damage.
If the cycle it is not closed by means of a circulating/debugging puma, the
heater could reach the water boiler temperature and the exchanger could be
damaged.
If metal particles have entered into the internal heating coil it could appear
leakages due to rusting originated by contact and the boiler water could
contaminate the pool water.
PRECAUTION
CARE
PRECAUTION
PRECAUTION
PRECAUTION

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1.5. SAFETY RULES IN THE INSTALLATION
Heat exchanger must be installed in a place free of frost.
Be sure that pressure is always lower than 3,0 bars in Secondary and 10 bars in the Primary.
The exchanger or the environment could be damaged.
2. TECHNICAL DATA
2.1. HEAT EXCHANGER
MODEL CODE
FEATURES
Capacity: kW
Boiler
Pool
90°C 60°C 45°C m3/h bar
m3/
h
Bar
WATERHEAT EQUIPADO 20kW
43506
20
10
5
1,6
0,14
10
0,14
WATERHEAT EQUIPADO 40kW
43507
40
20
10
2,7
0,45
15
0,24
WATERHEAT EQUIPADO 60kW
43508
60
30
15
3
0,78
20
0,29
Table 1: Technical data
3. INSTALLATION/ASSEMBLY
3.1. TRANSPORTATION/STORAGE
Transport the heat exchanger only after being drained.
Store the drained heat exchanger in indoor locations with a non aggressive atmosphere.
3.2. ASSEMBLY DIMENSIONS
MODEL CODE
DIMENSIONS (mm)
PACKAGING (mm)
WEIGHT
A
B
C
D
E
F
G
H
I
Long
Width
High
Kg
WATERHEAT
EQUIPADO 20kW
43506 530 456 160 215 1” 50 220 135 295 540 240 640 10
WATERHEAT
EQUIPADO 40kW
43507 530 590 160 225 1” 50 220 135 295 680 240 640 11
WATERHEAT
EQUIPADO 60kW
43508 530 650 160 305 1” 50 220 135 295 740 240 640 18
Check weekly that the exchanger and their connections are well tight and there
are not damages on them.
PRECAUTION

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3.3. INSTALLATION
Install the heat exchanger only in areas with a non-aggressive atmosphere and free of frost. Any
drop on it could damage it.
A free access for install/des install must be granted.
The heat exchanger can be installed under/ or over the water level.
¡Important!
Meanwhile the boiling cycle is on; the heat exchanger never can be drained
from the water poolside.
3.4. HEAT EXCHANGER CONNECTIONS
Install the blocking and control units and the drain valves in the boiler cycle inlet and outlet pipes
internally free of frost.
Heat exchanger could be damaged due to water pressure.
Check the water quality and MAX pressure values in the lines.
Heat exchanger could be damaged when external cycle be connected. Check
that metal particles cannot reach the heat exchanger.
Brass connections between heat exchanger and steel pipes work as electrical
separators.
Heat exchanger could be damaged by chemical products.
Cleaning devices must be installed always after the heat exchanger. If chemical
products are used (for instance Cl ), avoid that gas enter into the heat
exchanger during the filtering stopping periods.
PRECAUTION
PRECAUTION
PRECAUTION

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3.5. HEAT EXCHANGER CONNECTION TO A FILTER/PUMP CIRCULATING
SYSTEM
• Connect the boiler cycle to the primary heat exchanger.
• Connect the heat exchanger secondary to the pool piping’s by means of connections of tube
with tube clips or by means of inner spirals with connections of plastic/brass screw.
3.6. HEAT EXCHANGER CONNECTION TO A FILTER CIRCULATING
SYSTEM
• Connect both heat exchanger boiler elements to the water boiler cycle
• Connect the heat exchanger secondary to the pool piping by means of connections of tube with
tube clips or by means of inner spirals with connections of plastic/brass screw.
3.7. INSTALATION
•Hold the equipment through two M-6 blocks and M-4 clip, separated 220 mm. Hold the primary
and secondary pipes using clamps.

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• Join the primary pipe using pipefittings and the secondary pipe using three-part-joints
(included). Power the equipment using the cable-glands at the bottom.
• Verify that there are no leaks and place the front cover.
4. ELECTRICAL DIAGRAM

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5. START UP AND OPERATION
In the Titanium water-water heat exchanger the heat is transferred from the boiler cycle to the
pool water cycle.
ELECTRICAL DIAGRAM EQUIPPED WATERHEAT

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The heat exchanger is made of titanium so it is suitable for water that contains a high amount of
Cl (as brine, therapeutic or of water of sea swimming pools).
A temperature probe can be added so that the pool water temperature can be controlled.
¿Have you read and understood these instructions, mainly the chapter of safety? Only if the
answer is yes the heat exchanger can be operated.
The water-water heat exchanger could be damaged if something drops on it.
Maintenance and fixing operations must be made only when both water cycle blocking units are
closed.
• Vent both water cycles
6. CONTROLLER
Main Function: the controller is a special controller for water-water heat exchangers, it contains
1 temperature sensor (water temperature) and 1 control output (filtering pump).
Temperature Display and Controlling: it can display water temperature and control the
temperature in water tank between the temperature upper and lower limit.
External alarm: one outside alarm input, it can be set to 5 modes: always open, always open
locked, always closed, always closed locked or forbidden.
Others: temperature upper and lower limit can be set; temperature sensor error alarm and so
on.
Main Technique Index:
- Temperature display range: -50/150°C (the step is 0.1°C)
- Temperature setting range: -45/145°C (the step is 0.1°C)
- Power supply: AC 220V±10% or AC 380V±10% 50Hz (refer to the wiring diagram)
- Operating environment: temperature -20Cº/50Cº, humidity 85%.
- Relay contact capability: 2 A / 380 V AC (pure resistive load)
- Temperature sensor: NTC R25=5k, B (25/50) =3470K
- Executive standard: Q/320585 XYK 01-2004 (NA8824-HTD)
Panel
PRECAUTION

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What’s the meaning of the index lights on the panel?
The function of the LED on the panel is showing below:
INDEX LIGHT
NAME
LIGHT
FLASH
FILTRATION
PUMP
Equipment is heating, after the delay
of turning on the internal water
pump.
Filtration pump is on and the
equipment is timing for turning
on the internal water pump.
HEAT
Equipment is heating, after the delay
of turning on the internal water
pump.
- - -
ALARM - - - Alarm state.
The meaning of the LED display
The LED usually shows temperature, if it shows “SHr”, it means the temperature sensor is short,
and “OPE” means the temperature sensor is open. The temperature and the alarm code (Axx)
will show alternately when in the alarm state.
The code is showing below:
CODE
SIGNIFICATION
EXPLANATION
A11 External alarm
Alarm from external alarm signal, please refer to the
internal parameter code “F50”
A21
Water temperature
probe error
Disconnection or short circuit (showing “OPE” or
“SHr”.
A99 Over probation time
If you have set the probation time F87, the alarm
occurs when the accumulative running time is over
probation time and the controller cannot work.
How to set the temperature?
Press the key “set” for at least 2 seconds, then enter the state of temperature setting, here the
LED displays the setting temperature, then using “▲”key or “▼” key can change the
parameter (the key “▲” adds 0.1°C, the key “▼” minuses 0.1°C, press and hold it over 0.5
seconds can add or minus rapidly). After setting, press “set” again, then exit the state of
parameter setting. (The setting temp range is limited by the parameters F13 and F14; please
refer to the senior operation). Pressing the key “M” in the setting process means cancel and
exit, but the setting value will not be saved.
Advanced Operation
Press the key “M” and hold it for 5 seconds, and if you have set the password, the LED display
the “PAS” to hint you to enter the password, you can use the key “▲” and “▼” to enter the
password, if the password is correct, the LED will display the parameter code, use “▲” or “▼”
to select the parameter code. Pressing the “set” key can make it to show the value of the
parameter after select the parameter, here you use “▲” or “▼” to set the parameter(pressing
the key and not release can add or minus rapidly), then press the “set” key to return to the state
of showing parameter code after finishing setting. Pressing the key “M” can exit the parameter
setting state when display the parameter code, pressing the key “M” means cancel when in the
process of setting parameter, and the parameter will not be changed.

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Internal parameter code is showing below:
SORT CODE PARAMETER NAME RANGE
FACTORY
SETTING
UNIT REMARKS
TEMPERATURE
F11 Setting temperature F14F13 28 ºC / ºF
The setting range is limited by
F13 and F14.
F12 Differential temp. 0,120 1,0 ºC / ºF
Refer to the temperature
controlling.
F13
Max temperature
setting
-58302 35 ºC / ºF
Controller will follow the rule:
F14<F11<F13. If one parameter
cannot be adjusted is because it
is limited by another parameter.
F14
Min temperature
setting
-58302 10 ºC / ºF
F18
---
---
---
---
---
F19
Temp probe
adjustment
-2020 0.0 ºC / ºF Adjusts probe temperature.
WATER PUMP
F21
Water pump delay
010
3
min
F29
---
---
---
---
---
---
F31
---
---
---
---
---
F32
---
---
---
---
---
F33
---
---
---
---
---
F34
---
---
---
---
---
FILTRATION
F40
---
---
1
---
---
F41
Filtration starts time
before water pump
110 3 min
F42
Filtration stop time
after water pump
010 3 min
ALARM
F50 External alarm mode 0 to 4 0 ---
0:without external alarm
1:always open, unlocked
2:always open, locked
3:always closed, unlocked
4:always closed, locked
F59 Buzzer alarm sound
duration
off – 0,1
1,0 - on 0,5 min
Off: No alarm sound
On: Alarm sound always on until
pressing a key
---
F60
---
---
---
---
---
F61
---
---
---
---
---
F62
---
---
---
---
---
F63
---
---
---
---
---
F64
---
---
---
---
---
F65
---
---
---
---
---
F66
---
---
---
---
---
F69
---
---
---
---
---
SYSTEM SETTING
F80 Password
off – 0001
9999
off ---
Off: no password
0000: means clearing password
F81 Temperature units ºC / ºF ºC ---
ºC: Centrigrade
ºF: Fahrenheit
F85
Display accumulative
running time
--- --- hour
F86
Accumulative running
time reset
--- --- ---
F87 Probation time off – 0001
9999 off hour
The controller will stop if the
accumulative time is over
probation time and show the
alarm code “A99”
Off means no probation time
TESTING
F98
Reserved
---
---
---
---
F99 Set test
This function can attract all relays in turn; please do not use when the
controller is running.
END
exit
Basic Operating Principle
Temperature controlling
The controller has a temperature controlling mode.
Temperature controlling point is controlled by “setting temperature (F11, or press the “set” key
for some time to set and temperature difference “(F12)”.

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While heating, the controller begins to heat when the temperature of the temperature sensor is
under “setting temperature – differential temperature”, and it stops heating when the
temperature is over “setting temperature + differential temperature”
Water pump delay time
The water pump delay time is set by F21, for example, 3 minutes. The controller contains a
“water pump halt calculagraph”, and it begins to time when water pump stops, the program
first check the calculagraph before booting the water pump next time, the program will
immediately boot the water pump if the calculagraph reach 3 minutes.
If the calculagraph doesn’t reach 3 minutes, it will boot again when the calculagraph reaches 3
minutes. Thus you can ensure that the boot alternation is over 3 minutes after halt, so it can
prevent to breaking the water pump as a result of frequent boot. In addition, the controller
doesn’t boot the water pump within 3 minutes after turning on the power supply, thus the
water pump can also be protected in the state of power cut and then power on.
External alarm
The controller can connect a switching value as external alarm source (Pin 4, 5), when the
external alarm occurs, the controller stops, displays
The alarm code “A11” and generates alarm output. External alarm signal has 5 modes (F50):
· 0: without external alarm
· 1: always open, unlocked
· 2: always open, locked
· 3: always closed, unlocked
· 4: always closed, locked
“Always open” means in normal state, external alarm signal is open, if closed, the controller will
give an alarm; “Always closed” is on the contrary. “Locked” means that when external alarm
signal becomes normal, the controller is still in the alarm state, and it needs to press any key to
resume.
Probation time
A probation time can be set (F87), the controller can add up the running time after power is on,
if the accumulative running time is over the probation time, the controller will stop and display
the alarm code A99, if you want to eliminate the limit of probation time, set the F87 to “OFF”,
also you can use the F86 to clear the accumulative running time, and you can try to use it again.
The parameter F85 can be used to examine the accumulative running time of the controller
(hour).
Password
In order to prevent irrespective persons from changing the parameters, you can set a password
(F80), and if you have set a password, the controller will hint you to enter the password after
you press the key “M” for 5 seconds, you must enter the correct password, and then you can
set the parameters. If you don’t need the password, you can set F80 to “OFF”. Notice that you
must remember the password, and if you forget the password, you cannot enter the set state.

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7. MAINTENANCE / FIXING
• Check that the connections are tight once per week.
7.1. HIBERNATION OF THE HEAT EXCHANGER IN FREE OF ICE SPACES
Non-qualified personnel working on the technical systems could lead to injuries
or damages.
For its hibernation in free ice spaces the water-water heat exchanger must be
completely full of water.
7.2. HIBERNATION OF THE HEAT EXCHANGER IN ICY SPACES
Hibernation free of ice it is possible if next steps are followed:
• Close blocking units in both water cycles.
• Empty the exchanger and the pipes until the blocking units.
7.3. Water-water heat exchanger in vertical position
• Empty the heat exchanger through the drain completely.
7.4. Water-water heat exchanger in horizontal position
• Remove the water-water heat exchanger.
• Drain the heat exchanger and keep it in dry storage.
8. TROUBLE SHOOTING
Effect Check
It does not work ¿Blocking units are open?
¿Water-water heat exchanger is completely full in both
cycles?
¿ Water-water heat exchanger was vented?
¿Is there sufficient water flow (check technical data)?
PRECAUTION

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9. EXPLODED VIEW
PART
Nº
MODEL
CODE
1
Exchanger Waterheat 20 kw
EQUIP. WATERHEAT 20KW
41426
1
Exchanger Waterheat 40 kw
EQUIP. WATERHEAT 40KW
41427
1
Exchanger Waterheat 60 kw
EQUIP. WATERHEAT 60KW
41428
2
Set Joins Closing 20 kw
EQUIP. WATERHEAT 20KW
43506R0001
2
Set Joins Closing 40 kw
EQUIP. WATERHEAT 40KW
43507R0001
2
Set Joins Closing 60 kw
EQUIP. WATERHEAT 60KW
43508R0001
3
Link 3 Pieces
EQUIP. WATERHEAT 20-40-60KW
43506R0002
4
Power supply hose
EQUIP. WATERHEAT 20-40-60KW
43506R0003
5
Cable Glands
EQUIP. WATERHEAT 20-40-60KW
43506R0004
6
Lateral Enclosure ABS
EQUIP. WATERHEAT 20-40-60KW
43506R0005
7
Check Valve 3/4"
EQUIP. WATERHEAT 20-40-60KW
43506R0006
8
Rear Enclosure 20 kw
EQUIP. WATERHEAT 20KW
43506R0007
8
Rear Enclosure 40 kw
EQUIP. WATERHEAT 40KW
43507R0002

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8
Rear Enclosure 60 kw
EQUIP. WATERHEAT 60KW
43508R0002
9
Plexo Box d-70mm
EQUIP. WATERHEAT 20-40-60KW
43506R0008
10
Clema 10
EQUIP. WATERHEAT 20-40-60KW
43506R0009
11
Recirculation Pump
EQUIP. WATERHEAT 20KW
43506R0010
11
Recirculation Pump
EQUIP. WATERHEAT 40KW
43507R0003
11
Recirculation Pump
EQUIP. WATERHEAT 60KW
43508R0003
12
Tª Sensor
EQUIP. WATERHEAT 20-40-60KW
43506R0011
13
Front Enclosure 20 kw
EQUIP. WATERHEAT 20KW
43506R0012
13
Front Enclosure 40 kw
EQUIP. WATERHEAT 40KW
43507R0004
13
Front Enclosure 60kw
EQUIP. WATERHEAT 60KW
43508R0004
14
Thermostat
EQUIP. WATERHEAT 20-40-60KW
43506R0014
15
Cable Glands
EQUIP. WATERHEAT 20-40-60KW
43506R0015
16
Resistance
EQUIP. WATERHEAT 20-40-60KW
43506R0016

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10. PRODUCT RECYCLING
This water-water heat exchanger in made of stainless steel an Titanium. When it
reaches the end of its service life, it should be dismantled by an authorised company or may be
transported to the place assigned by the corresponding local authorities.
With the aim of reducing the amount residues and the danger of their components, to promote
the recycling of the equipment and the appreciation of their residues, and to determine a suitable
management that attempts to improve the effectiveness of the environmental protection, a
series of regulations applicable to the manufacturing of the product and others related to the
correct environmental management when they become residues have been implemented.
As of 13 August 2005, when you wish to throw away this unit, you have two possible return
systems:
- If you acquire a new one that is of an equivalent type or it has the same functions as the one
thrown away, you could hand it over at no cost to the distributor.
- Or you could take it to the place so selected by the local authorities.
The units are labelled with the symbol of a “crossed out wheeled rubbish container”. This symbol
denotes the need for its selective and differentiated collection from the rest of urban rubbish.
Possible effects over the environment or human health of the dangerous materials it may
contain.
TITANIUM
Health effects. Elemental titanium and titanium dioxide are of low order of toxicity. Humans
overexposed to titanium dioxide via inhalation can develop sight changes in lungs.
Effects of overexposure to titanium powder. Dust inhalation may cause tightness and pain in
chest, coughing, and difficulty in breathing. Contact with skin or eyes may cause irritation.
Routes of entry: Inhalation, skin contact, eye contact.
Carcinogenicity. The International Agency for Research on Cancer (IARC) has listed titanium
dioxide within Group (The agent is not classifiable as to its carcinogenicity to humans).
Environmental effects. Low toxicity. No negative environmental effects of titanium have been
reported.
11. WARRANTY CERTIFICATE