Lamborghini Caloreclima Taura 24 MCS W TOP Troubleshooting guide

TAURA 24 MCS W TOP
CALDAIA MURALE A GAS CAMERA STAGNA, PER SANITARIO E RISCALDAMENTO
WALL-MOUNTING GAS BOILER AIRTIGHT CHAMBER, FOR HOT WATER AND HEATING
CHAUDIÈRE MURALE À GAZ CHAMBRE DE COMBUSTION ÉTANCHE, POUR LA PRODUCTION D’EAU CHAUDE SANITAIRE ET LE CHAUFFAGE
CALDERA MURAL DE GAS CON CÁMARA ESTANCA PARA AGUA SANITARIA Y CALEFACCIÓN
CALDEIRA MURAL A GÁS CÂMARA ESTANQUE, PARA PRODUÇÃO DE ÁGUA QUENTE SANITÁRIA E AQUECIMENTO
ΕΠΙΤΟΙΧΟΣ ΛΕΒΗΤΑΣ ΑΕΡΙΟΥ ΣΤΕΓΑΝΟΎ ΘΑΛΆΜΟΥ, ΓΙΑ ΖΕΣΤΌ ΝΕΡΌ ΚΑΙ ΘΈΡΜΑΝΣΗ
cod. 3540D95/0 ediz. 06/2006
AZIENDA CERTIFICATA ISO 9001
I STRUZIONI PER
L’USO
L'INSTALLAZIONE
E LA MANUTENZIONE
INSTRUCTIONS
FOR USE,
INSTALLATION
AND MAINTENANCE
INSTRUCTIONS
D’UTILISATION,
D’INSTALLATION
ET D’ENTRETIEN
INSTRUCCIONES
PARA EL USO,
LA INSTALACIÓN Y EL
MANTENIMIENTO
INSTRUÇÕES DE
UTILIZAÇÃO
INSTALAÇÃO
E MANUTENÇÃO
ΟΔΗΓIΕΣ ΧΡΗΣΗΣ
ΕΓΚΑΤAΣΤΑΣΗΣ
ΚΑΙ ΣΥΝΤΗΡΗΣΗΣ

Taura 24 MCS W TOP
20
1. Operating instructions..........................................................................21
2. Installation ............................................................................................22
3. Service and maintenance......................................................................27
4 Technical characteristics and data .........................................................34
• This instruction booklet is an integral part of the
product and must be carefully kept by the user for
future reference.
• Installation and maintenance must be carried out
by professionally qualified personnel, according to
current regulations and the manufacturer’s instruc-
tions.
• Incorrect installation or poor maintenance can
cause damage or physical injury. The manufacturer
declines any responsibility for damage caused by
errors in installation and use or by failure to follow
the manufacturer’s instructions
• In case the unit breaks down and/or functions
poorly, deactivate it, do not make any attempt to
repair it or directly intervene. Contact profession-
ally qualified personnel.
• Any repair/replacement of products must only be
carried out by qualified professional personnel us-
ing exclusively genuine parts. Failure to comply
with the above could affect the safety of the unit.
• This unit must only be used for the purpose for
which it was designed. Any other use is considered
improper and therefore hazardous.
• Packing materials must not be left within the reach
of children as they are potentially hazardous.
Declaration of conformity
The manufacturer declares that this unit complies with the following EU
directives:
• Gas Appliance Directive 90/396
• Efficiency Directive 92/42
• Low Voltage Directive 73/23 (amended by 93/68)
• Electromagnetic Compatibility Directive 89/336 (amended by 93/68)

Boiler off
Boiler on stand-by
Heating operation (burner on)
Operation in hot water mode
(burner on)
TEST mode operation
Green YellowRed
On Off Blinking (fast for trouble)
LED key
Fig. 1
For other combinations, see chap. 3.4.
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1. OPERATING INSTRUCTIONS
1.1 Introduction
Dear Customer,
Thank you for choosing Taura 24 MCS W TOP, a LAMBORGHINI wall-mounting boiler featuring advanced design,
cutting-edge technology, high reliability and quality construction. Please read this manual carefully since it provides
important information on safe installation, use and maintenance.
TAURA 24 MCS W TOP is a high-efficiency heat generator for heating and hot water production running on natural
or liquefied petroleum gas, equipped with an open-flue burner with electronic ignition, airtight chamber with forced
ventilation and a microprocessor control system.
1.2 Control panel
1System temperature adjustment
2Hot water temperature adjustment
3Selector:
0Off
Summer (hot water only)
Winter (heating + hot water)
RESET Boiler restore
TEST Operation in TEST mode
4LEDs indicating functional status and signalling trouble
If the boiler is hooked up with the optional remote timer control, the system and hot water temperature
adjustments can be made solely with the remote control.
1 3 2
4
Information during operation
During normal operation, the boiler diagnostics control sends information on the state of the boiler via the LEDs
(4 - fig.1):

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1.3 Turning on and off
Ignition
• Open the gas valve ahead of the boiler.
• Supply the unit with electricity.
Turn the selector 3 onto (winter) or onto (summer)
• Turn the heating and hot water knob onto the required temperatures.
• The boiler is ready to function automatically whenever hot water is drawn or the room thermostat calls for heat-
ing.
If after the ignition cycle the burners fail to ignite and the red LED comes on, turn the selector onto RESET
for 1 second and then back onto or onto . The controller will repeat the ignition cycle in the next 30
seconds. If the burners fail to ignite even after the third attempt, refer to chap. 3.1.
In case of an electrical power failure while the boiler is working, the burners will go out and re-ignite auto-
matically when power is restored.
Turning off
Turn the selector onto 0.
When the boiler is turned off, the electronic card is still powered.
Hot water and heating operation are disabled, all the LEDs are off; but the antifreeze function stays on
The antifreeze system will not work if the electricity and/or gas supply to the unit are cut off.
To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all water from
the boiler, the tap water and the system water; or drain off just the tap water and add a suitable antifreeze
to the heating system, as prescribed in chap. 2.3.
1.4 Adjustments
Water system pressure adjustment
The filling pressure with the system cold, read on the boiler water gauge, must be about 1.0 - 1.5 bar. If the system
pressure falls to values below the minimum, bring it back to the initial value by operating the filling cock (see fig. 7
part 74). At the end of the operation always close the filling cock.
2. INSTALLATION
2.1 General Instructions
BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSONNEL, IN ACCORDANCE WITH ALL
THE INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIP-
TIONS OF NATIONAL AND LOCAL STANDARDS AND THE RULES OF PROPER WORKMANSHIP.
2.2 Place of installation
The unit’s combustion circuit is sealed off from the installation room and therefore the unit can be installed in any
kind of room. However, the installation room must be sufficiently well ventilated to prevent any dangerous condi-
tions from forming in the event of even slight gas leakage. This safety standard is required by the EEC Directive no.
90/396 for all gas units, including those with a so-called sealed chamber.
Therefore the place of installation must be free of dust, flammable materials or objects or corrosive gases. The room
must be dry and not subject to freezing.
The boiler is fitted to be installed on a wall and is equipped as standard with a set of brackets. The LEJ LINE plumbing
kits also include a paper template to mark the drilling points on the wall if these kits are used. Secure the bracket to
the wall and hook on the boiler. The wall fixing must ensure a stable and effective support for the generator.

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If the unit is enclosed in furniture or mounted alongside, there must be space for removing the casing and
for normal maintenance work.
2.3 Plumbing connections
The heating capacity of the unit should be previously established by calculating the building’s heat requirement ac-
cording to current regulations. The system must be equipped with all its components for it to work properly. It is
advisable to install on-off valves between the boiler and heating system allowing the boiler to be isolated from the
system if necessary.
The safety valve outlet must be connected to a funnel or collection pipe to prevent water flowing out onto
the ground in the event of over-pressure in the heating circuit. If this is not done, and the drain valve trips
and floods the room, the boiler manufacturer is not to be held responsible.
Do not use the water system pipes to earth electrical appliances.
Before installation, carefully wash all the pipes of the system to remove residues or impurities that could affect the
unit’s good working.
Make the connections to the corresponding connections as shown in fig. 6 in chap. IV and with the symbols on the
unit. A plumbing kit is available on request.
Characteristics of the water system
In the presence of water harder than 25° Fr, we recommend the use of suitably conditioned water in order to avoid
possible scaling in the boiler. Water treatment is indispensable in the case of very large systems or with frequent
introduction of replenishing water in the system. If partial or total emptying of the system becomes necessary under
these conditions, it is advisable to refill it with treated water.
Antifreeze system, antifreeze fluids, additives and inhibitors.
The boiler is equipped with an antifreeze system that turns on the boiler in heating mode when the system delivery
water temperature falls under 6°C. The device will not come on if the electricity and/or gas supply to the unit are cut
off. If it becomes necessary, it is permissible to use antifreeze fluid, additives and inhibitors only if the manufacturer
of these fluids or additives guarantees they are suitable for this use and cause no damage to the heat exchanger
or other components and/or materials of the boiler unit and system. It is prohibited to use generic antifreeze fluid,
additives or inhibitors that are not expressly suited for use in heating systems and compatible with the materials of
the boiler unit and system.
2.4 Gas connection
Before making the connection, ensure that the unit is arranged for operation with the type of fuel available
and carefully clean all the pipes of the gas system to remove any residues that could affect good functioning
of the boiler.
The gas must be connected to the relative connector (see fig. 7) in conformity with current standards, with rigid metal
pipes or with continuous flexible s/steel wall tubing, placing a gas cock between the system and the boiler. Make
sure that all the gas connections are tight.
The capacity of the gas meter must be sufficient for the simultaneous use of all equipment connected to it. The
diameter of the gas pipe leaving the boiler does not determine the diameter of the pipe between the unit and the
meter; it must be chosen according to its length and loss of head, in conformity with current standards.
Do not use the gas pipes to earth electrical appliances.

2.6 Fume ducts
The unit is “type C” with an airtight chamber and forced draught, the air inlet and fume outlet must be connected
to one of the following extraction/suction systems. Before commencing installation, it is first necessary to check that
the fume ducts do not exceed the maximum permissible lengths.
This C-type unit must be installed using the fume extraction and outlet ducts supplied by the manufacturer
in accordance with UNI-CIG 7129/92. Failure to use them automatically forfeits all warranty and liability of
the manufacturer.
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2.5 Electrical Connections
Connection to the electrical grid
The boiler must be connected to a single-phase, 230 Volt-50 Hz electric line.
The unit’s electrical safety is only guaranteed when correctly connected to an efficient earthing system executed
according to current safety standards. Have the efficiency and suitability of the earthing system checked by
professionally qualified personnel. The manufacturer is not responsible for any damage caused by failure to
earth the system.
The boiler is prewired and provided with a Y-cable and plug for connection to the electricity line. The connections
to the grid must be made with a permanent connection and equipped with a bipolar switch whose contacts have a
minimum opening of at least 3 mm, interposing fuses of max. 3A between the boiler and the line. It is important to
respect the polarities (LINE: brown wire / NEUTRAL: blue wire / EARTH: yellow-green wire) in making connections
to the electrical line. During installation or when changing the power cable, the earth wire must be left 2 cm longer
than the others.
The user must never change the unit’s power cable. If the cable gets damaged, switch off the unit and have it
changed solely by professionally qualified personnel. When changing the cable use solely “HAR H05 VV-F”
3x0.75 mm2 cable with a maximum outside diameter of 8 mm.
Room thermostat
CAUTION: THE ROOM THERMOSTAT MUST HAVE CLEAN CONTACTS. CONNECTING 230 V. TO THE TER-
MINALS OF THE ROOM THERMOSTAT WILL IRREPARABLY DAMAGE THE ELECTRONIC CARD.
When connecting a remote timer control or a timer switch, do not take the power supply for these devices
from their cut-out contacts. Their power supply must be taken with a direct connection from the mains or with
batteries, depending on the kind of device.
Access to the electrical terminal board
The terminal block is at the bottom of the boiler (see fig. 2)
Fig. 2
Room
thermostat
Remote
timer control
(Opentherm)
Or

Diaphragms
Boiler operation requires fitting the diaphragms supplied with the unit as instructed in the following tables and
drawings.
Choosing the diaphragm using coaxial pipes Choosing the diaphragm using separate pipes
Type Length up to: Diaphragm to use
Coaxial
60/100
1 bend + 1 metre Ø84 external
1 bend + 3 metres No diaphragm
Pipe length
calculated in linear metres Diaphragm to use
Min Max
0 m 20 m Ø50 internal
20 m 35 m No diaphragm
To change the diaphragm:
Diaphragm for coaxial pipes
Insert the diaphragm on the aluminium section
Ø60 of the upper flange of the boiler
Diaphragm for separate pipes
Insert the diaphragm under the flanged
air inlet section Ø80
Ø 84
Connection with coaxial pipes
Fit the concentric pipe, positioning it in the required direction, and insert the seal onto it and install the diaphragm
(when necessary). Fit the fume outlet and suction pipes observing the distances given on the respective installation
diagram. It is necessary to keep the fume outlet sloping slightly outwards.
CONC NTRIC OUTL T max length 3 m + bend
100 Max. 3000 220
Ø100
105
400
720
100 Max. 3000
229
320
Air
diaphragm
OUTL T
Taura 24 MCS W TOP
25
Ø 50

Connection with separate pipes
Remove the air inlet closing cap. Fit the two flanged sections Ø80, with their seals. If necessary, install the diaphragm
under the air inlet section
Losses eqm
Component Drawing Suction Outlet
Vertical
Outlet
Horizontal
Accessories Ø 80
Pipe Ø 80 male-female 11 2
Bend 45° Ø80 1,2 2,2
Bend 90° Ø80 male-female 1,5 2,5
Condensate collection cup coupling /3 /
Windproof end piece for products of combustion Ø 80 mm // 5
Suction protection air end piece Ø 80 2/ /
Rooftop outlet 80/125 + TEE reduction for separate ducts /12
Caution: use solely Lamborghini Caloreclima fume suction/outlet kits
** Air suction Ø 80
Air diaphragm
Air Fumes
Remove
the plug
Connection with separate pipes
1. Completely define the layout of the system of split flues, including accessories and outlet end pieces.
2. Refer to the following table and identify the losses in eqm of each component according to the position of
installation.
3. Check that the total sum of the losses is less than or equal to the maximum permissible value: 35 eqm.
Table of pipe and accessory losses
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3. SERVICE AND MAINTENANCE
All adjustment, conversion, system start-up and maintenance operations described hereunder must be carried out
solely by Qualified Personnel such as the personnel of the Local After-Sales Technical Service.
LAMBORGHINI declines any responsibility for damage or physical injury caused by unqualified and unauthorized
persons tampering with the device.
The first ignition is free of charge and must be requested as directed on the sticker on the boiler.
3.1 Adjustments
Gas supply conversion
The unit can function with either Natural Gas or LPG and is factory-set for use with one of the two gases, as clearly
shown on the packing and on the unit’s dataplate. Whenever a different gas to that for which the unit is preset has
to be used, a conversion kit will be required, proceeding as follows:
1. Replace the nozzles at the main burner, inserting the nozzles specified in the technical data table in chap. 4, ac-
cording to the type of gas used
2. Adjust the burner minimum and maximum pressures (ref. relevant paragraph), setting the values given in the tech-
nical data chart for the type of gas used.
3. Edit the parameter for the type of gas:
- turn the boiler onto standby
- select RESET for 10 seconds: LEDs blinking fast for two seconds
- select WINTER: red LED on
- select RESET for 1 second
- select WINTER: yellow LED on
- select RESET for 5 seconds: LEDs blinking fast for two seconds
- select WINTER
- turn the hot water knob (ref. 2 - fig 1) onto minimum (for Natural Gas operation) or onto maximum (for LPG opera-
tion)
- red LED blinking (LPG operation) or red LED off (Natural Gas operation)
- select RESET for 5 seconds: LEDs blinking fast for two seconds
- select WINTER: yellow LED and red LED on
- turn the heating knob (ref. 1 - fig 1) onto minimum and then onto maximum
- the boiler will go back onto standby
- turn the knobs onto the set temperatures.
4. Apply the sticker contained in the conversion kit, near the dataplate as proof of the conversion.
Turning on TEST mode
Select TEST.
TEST mode is turned off by selecting another mode or automatically after 15 minutes.
Adjusting burner pressure
Since this unit has flame modulation, there are two fixed pressure settings: the minimum and maximum, which must
be as stated in the technical data chart according to the type of gas.
• Connect a suitable pressure gauge to pressure point “B” downstream from the gas valve.
• Disconnect the pressure compensation tube “H” and take off the protective cap “D”.
• Run the boiler in TEST mode (selector on TEST):
• Adjust the maximum pressure with the screw “G”, clockwise to increase it and anticlockwise to decrease it.
• Disconnect one of the two faston connectors from the modureg “C” on the gas valve.
• Adjust the minimum pressure with the screw “E”, clockwise to decrease it and anticlockwise to increase it.
• Reconnect the faston connector disconnected from the modureg on the gas valve.

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• Check that the maximum pressure has not changed.
• Reconnect the pressure compensation tube “H”.
• Put the protective cap “D” back on.
• To end TEST mode, select another mode.
Key
BPressure point
CModureg cable
DProtective cap
EMinimum pressure adjustment
GMaximum pressure adjustment
Fig. 3
After checking or adjusting the pressure,
it is mandatory to seal the adjustment
screw with paint or a specific seal.
Adjusting the maximum heating output
Refer to the Installer parameters menu section
Ignition power adjustment
Refer to the Installer parameters menu section
Installer Parameters menu
The card is equipped with 10 transparent parameters: modifiable from Remote Control (Service parameters menu)
and from the same (Installer Parameters Menu except the last two, 9 and 10):
Num. Parameters menu Range Default
1 Max. heating power 0-100% 100%
2 Gas type selection 0=Natural gas,1=LPG 0=Natural gas
3 Lighting Power 0-60% 50%
4 Heating idle time 0=0minutes, 1=2.5 minutes 1=2.5 minutes
5 Heating pump Post-Circulation 0=0minutes, 1=2.5 minutes 1=2.5 minutes
6 Heating user max. setpoint 30°C, 40°C, 85°C 85°C
7 Hot water user max. setpoint 0=55°C, 1=65°C 0=55°C
8 Boiler shutdown in hot water mode 0=Fixed,1=Tied to setpoint 1=setp.
9 Heating ramp 1-20°C/min 10°C/min
10 Mains Voltage Frequency 0=50Hz,1=60Hz 0=50Hz
Remote Timer Control modification occurs by entering its Service parameters menu (refer to the relevant manual):
the order and range correspond exactly to that given in the table.
Modification from card occurs as follows.
The parameters, named in the previous table P1÷P8, can be displayed and possibly modified from the Installer Pa-
rameters menu by decoding of the LEDs and position, for different time intervals, of the selector. The method for
accessing, displaying and/or modifying a number of parameters and exiting the menu is described by means of the
following flow chart.

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Entry
Installer Parameters
menu
Selector turned to “Reset” for
10 seconds: turn to “Winter” when
the 3 LEDs blink fast
Turn the Heating
Knob
to exit the menu
(Automatic exit
after 2 minutes of knob
inactivity)
PARAMETER No. 7
Red=OFF - Green=ON - Yellow=OFF
Hot water user max. setting
Selector turned to “Reset” and then
to “Winter” again to go to the next
PARAMETER No. 6
Red=OFF - Green=ON - Yellow=OFF
Heating user max. setting
Selector turned to “Reset” and then
to “Winter” again to go to the next
PARAMETER No. 5
Red=OFF - Green=ON - Yellow=OFF
Post-circulation time
Selector turned to “Reset” and then
to “Winter” again to go to the next
PARAMETER No. 4
Red=OFF - Green=ON - Yellow=OFF
Heating idle time
Selector turned to “Reset” and then
to “Winter” again to go to the next
PARAMETER No. 3
Red=ON - Green=OFF - Yellow=ON
Lighting power
Selector turned to “Reset” and then
to “Winter” again to go to the next
PARAMETER No. 2
Red=OFF - Green=OFF - Yellow=ON
Gas type selection
Selector turned to “Reset” and then
to “Winter” again to go to the next
PARAMETER No. 1
Red=ON - Green=OFF - Yellow=OFF
Max. heating power
Selector turned to “Reset” and then
to “Winter” again to go to the next
Select turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast
PARAMETER No. 8
Red=OFF - Green=OFF - Yellow=OFF
Hot water mode
Selector turned to “Reset” and then
to “Winter” again to go to the next
Selector turned to
“Reset” for 5 seconds:
turn to “Winter”
when the 3 LEDs
blink fast
Turn the Hot Water
Knob
to set the value
Selector turned to
“Reset” for 5 seconds to
confirm: turn to “Winter”
when the 3 LEDs blink
fast

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After establishing the parameter to be set, use the following conversion tables to understand the value being set, ac-
cording to the blinking of the LEDs. OFF means LED off, ON means LED on, whereas ON BL means LED blinking.
Red Green Yellow Max. heating power
OFF OFF OFF 00-11%
ON BL OFF OFF 11-23%
OFF OFF ON BL 23-36%
ON BL OFF ON BL 36-49%
OFF ON BL OFF 49-61%
ON BL ON BL OFF 61-74%
OFF ON BL ON BL 74-85%
ON BL ON BL ON BL 85-100%
Red Green Yellow Gas type selection
OFF OFF OFF Natural gas
ON BL OFF OFF LPG
Red Green Yellow Lighting power
OFF OFF OFF 00-06%
ON BL OFF OFF 06-13%
OFF OFF ON BL 13-21%
ON BL OFF ON BL 21-29%
OFF ON BL OFF 29-36%
ON BL ON BL OFF 36-44%
OFF ON BL ON BL 44-51%
ON BL ON BL ON BL 51-60%
Red Green Yellow Heating idle time
OFF OFF OFF 00 minutes
ON BL OFF OFF 2.5 minutes
Red Green Yellow Pump post-circulation
OFF OFF OFF 00 minutes
ON BL OFF OFF 2.5 minutes
Red Green Yellow Heating max. setpoint
OFF OFF OFF 30°C
ON BL OFF OFF 40°C
OFF OFF ON BL 85°C
Red Green Yellow Hot water max. setpoint
OFF OFF OFF 55°C
ON BL OFF OFF 65°C
Red Green Yellow Hot water burner shutdown
OFF OFF OFF Fixed shutdown
ON BL OFF OFF Tied to user setpoint

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3.2 System start-up
Checks to be made at first ignition, and after all maintenance operations that involved disconnecting from
the systems or an intervention on safety devices or parts of the boiler:
Before lighting the boiler:
• Open any on-off valves between the boiler and the systems.
• Check the airtightness of the gas system, proceeding with caution and using a soap and water solution to detect
any leaks in connections.
• Fill the water system and make sure that all air contained in the boiler and the system has been vented by opening
the air vent valve on the boiler and any vent valves on the system.
• Make sure there are no water leaks in the system, hot water circuits, connections or boiler.
• Make sure the electrical system is properly connected and the earth system works properly.
• Make sure that the gas pressure is as required for heating.
• Make sure there are no flammable liquids or materials in the immediate vicinity of the boiler.
Checks during operation
• Ignite the appliance as described in chap. 1.3.
• Check the airtightness of the fuel circuit and water systems.
• Check the efficiency of the flue and air-fume ducts while the boiler is working.
• Check that the water is circulating properly between the boiler and the systems.
• Make sure that the gas valve modulates correctly in both the heating and hot water production phases.
• Check the proper ignition of the boiler by performing various tests, turning it on and off with the room thermostat
or remote control.
• Make sure that the fuel consumption indicated on the meter corresponds to that given in the technical data table
in chap. 4.
• Make sure that with no call for heating the burner correctly ignites on opening a hot water tap. Check that during
heating operation, on opening a hot water tap, the heating circulator stops and there is a regular production of
hot water.
• Check the parameters are programmed correctly and perform any required customization (compensation curve,
power, temperatures, etc.)
3.3 Maintenance
Seasonal inspection of the boiler and flue
To make sure that operating efficiency and safety are maintained over time, it is necessary to have the appliance
and system checked regularly by qualified personnel. For the frequency of these operations, scrupulously observe
the requirements of national and local regulations. In any case, it is advisable to carry out the following checks at
least once a year:
• The control and safety devices (gas valve, flow meter, thermostats, etc.) must function correctly.
• The air-fume end piece and ducts must be free of obstructions and leaks.
• The gas and water systems must be airtight.
• The burner and exchanger must be clean and free of scale. When cleaning, do not use chemical products or wire
brushes.
• The electrode must be free of scale and properly positioned.
• The water pressure in the cold water system must be about 1-1.5 bar; otherwise, bring it to that value.
• The expansion tank must be filled.
• The gas flow and pressure must correspond to that given in the respective tables.
• The circulation pump must not be blocked.
• The airtight chamber must be sealed (gaskets, cable clamps, etc.).
• The boiler casing, panel and aesthetic parts can be cleaned with a soft damp cloth, possibly soaked in soapy water.
Do not use any abrasive detergents and solvents.

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A
A
B
Fig. 4
Combustion analysis
Two sampling points have been included at the top
of the boiler, one for fumes and the other for air.
To take the samples:
1) Insert the probes as far as the stop;
2) Open a hot water tap;
3) Adjust the hot water temperature to maximum.
4) Wait 10-15 minutes for the boiler to stabilize*
5) Take the measurement.
Analyses made with an unstabilized boiler can
cause measurement errors.
Air Fumes
Fig. 5
Opening the casing
To open the boiler casing:
1Unscrew the four screws A
2Lower the inspection door
3Raise and remove the casing B
Before carrying out any operation inside the boiler, disconnect the electrical power supply and close the gas
cock upstream.

3.4 Troubleshooting
Fault Diagnosis
The boiler is equipped with an advanced self-diagnosis system. In the event of trouble with the boiler, the 3 LEDs
will indicate the code of the fault.
There are faults that cause shutdown: in order to restore operation it suffices to turn the selector (ref. 3 - fig. 1)
onto RESET for 1 second and then back onto (summer) or onto (winter) or with the RESET on the optional
remote timer control if this is installed; if the boiler fails to start, it is necessary to resolve the fault indicated by the
operating LEDs.
Other faults cause temporary shutdowns that are automatically reset as soon as the value comes back within the
boiler’s normal working range.
Taura 24 MCS W TOP
33
No burner
ignition
Safety thermostat
trips
Flame present with burner
off signal
Air pressure switch
(fails to close the contacts
within 60 sec. of turning on
the fan)
Low system
pressure
Delivery sensor fault
Tap water sensor fault
Fault Possible cause Cure
Green YellowRed
• Heating sensor
damaged
• No circulation
of water in the system
• Air in the system
• Check the gas flow
to the boiler is regular
• Check the wiring of the electrode
and that it is correctly
positioned and free of any deposits
• Check and change the gas valve
• Adjust the ignition power
• Check the correct
positioning and operation
of the heating sensor
• Check the circulator
• Vent the system
• Electrode fault
• Card trouble
• Air pressure switch contact
open
• Incorrect wiring
to the air pressure switch
• Wrong diaphragm
• Flue not correctly
sized or obstructed
• System empty
• Water pressure switch not
connected or damaged
• Sensor damaged
• Wiring shorted
• Wiring broken
• Sensor damaged
• Wiring shorted
• Wiring broken
• Check the ionizing electrode
wiring
• Check the card
• Check the wiring
• Check the fan
• Check the pressure switch
• Change the diaphragm
• Fill the system
• Check the sensor
• Check the wiring or change
the sensor
• Check the wiring or change
the sensor
• No gas
• Detection/ignition
electrode fault
• Defective gas valve
• Ignition power
too low
LED key
On Off Blinking (fast)

60,5 64,5 60 60 95 60
1234 5
4 TECHNICAL CHARACTERISTICS AND DATA
4.1 Dimensions and connections
Fig. 6
Top view
Bottom view
Key
1Heating system delivery Ø 3/4”
2Hot water outlet Ø 1/2”
3Gas inlet 1/2”
4Tap water inlet Ø 1/2”
5Heating system return Ø 3/4”
If using the LEJ LINE plumbing kit,
the distances for drilling the wall
are those given on the paper template
contained in the kit
Taura 24 MCS W TOP
34

Taura 24 MCS W TOP
35
4.2 General view and main components
Fig. 7
81
22
10 874744 911
32
42
16
27
19
26
91
56
29 43
49
28
5
90
34
36
47 38
20
21
14
114
Key
5Airtight chamber
7Gas inlet
8Tap water outlet
9Tap water inlet
10 System delivery
11 System return
14 Safety valve
16 Fan
19 Combustion chamber
20 Burner assembly
21 Main nozzle
22 Burner
26 Combustion chamber
insulation
27 Copper exchanger for heating
and hot water
28 Fume manifold
29 Fume outlet manifold
32 Heating circulator
34 Heating temp. sensor
36 Automatic air vent
38 Flow switch
42 Tap water temperature sensor
43 Air pressure switch
44 Gas valve
47 Modureg
49 Safety thermostat
56 Expansion tank
74 Heating system cock
81 Ignition and detection
electrode
90 Fume detection point
91 Air detection point
114
Water pressure switch

Taura 24 MCS W TOP
36
4.3 Technical data table
4.4 Diagrams
Pressure - power diagrams Head available for the system
0
1
2
3
4
5
6
0 500 1.000 1.500 2.000
Q [l/h]
H [m H
2
O]
mbar
kW
G31
LPG
G20
Natural
gas
Powers Pmax Pmin
Heating Power (Net Heat Value - Hi) kW 25,8 8,3
Available Thermal Power 80°C - 60°C kW 24,0 7,2
Hot Water Heating Power kW 24,0 7,2
Energy marking (92/42EEC directive) ÌÌÌ
NOx emission class 3
Gas supply Pmax Pmin
Natural Gas main nozzles (G20) mm 11x1.35
Natural Gas supply pressure (G20) mbar 20,0
Pressure at Natural Gas burner (G20) mbar 12,0 1,5
Natural Gas delivery (G20) nm3/h 2,73 0,88
LPG main nozzles (G31) mm 11x0.79
LPG supply pressure (G31) mbar 37,0
Pressure at LPG burner (G31) mbar 35,0 5,0
LPG delivery (G31) kg/h 2,00 0,65
Heating
Maximum working temperature in heating °C 90
Maximum working pressure in heating bar 3
Minimum working pressure in heating bar 0,8
Expansion tank capacity litres 8
Expansion tank pre-filling pressure bar 1
Boiler water content litres 1,0
Hot water
Maximum hot water production Δ25°C l/min 13,7
Maximum hot water production Δ30°C l/min 11,4
Maximum working pressure in hot water production bar 9
Minimum working pressure in hot water production bar 0,25
Hot water content litres 0,3
Electrical power supply
Electrical power absorbed W 110
Hot water electrical power absorbed W 40
Power voltage/frequency V/Hz 230/50
Electrical protection rating IP X5D
Weight kg 30

Taura 24 MCS W TOP
37
4.5 Wiring diagram
34
43
49
MF10FA
TRANSFORM R
42
114
72
441632230V 50Hz
X5 X3 X7 X6 X4
1 2 1 2 3 1 2 3 4 123456712345678910 11
FUS
X1
N L
81
47
38
F 3.15A F 3.15A
139
FUS
CAUTION Before connecting the room thermostat or the remote timer control, remove the jumper on the terminal block.
Fig. 8
Key 16 Fan 32 Heating circulator 34 Heating temp. sensor 38 Flow switch 42 Tap water temperature sensor 43 Air pressure switch 44 Gas valve
47 Modureg 49 Safety thermostat 72 Room thermostat 81 Ignition/detection electrode 114 Water pressure switch 139 Remote timer control (Opentherm)

108
BRUCIATORI
CALDAIE MURALI E TERRA A GAS
GRUPPI TERMICI IN GHISA E IN ACCIAIO
GENERATORI DI ARIA CALDA
TRATTAMENTO ACQUA
CONDIZIONAMENTO
LAMBORGHINI CALOR S.p.A.
VIA STATALE, 342
44040 DOSSO (FERRARA)
ITALIA
TEL. ITALIA 0532/359811 - EXPORT 0532/359913
FAX ITALIA 0532/359952 - EXPORT 0532/359947
Le illustrazioni e i dati riportati sono indicativi e non impegnano. La LAMBORGHINI si riserva il diritto di apportare senza
obbligo di preavviso tutte le modifiche che ritiene più opportuno per l'evoluzione del prodotto.
The illustrations and data given are indicative and are not binding on the manufacturer. LAMBORGHINI reserves the right to
make those changes, considered necessary, for the improvement of the product without forwaming the customer.
Las ilustraciones y los datos son indicativos y no comprometen. LAMBORGHINI se reserva el derecho de realizar sin preaviso
todas las modificaciones que estime oportuno para la evolución del producto.
As ilustrações e os dados existentes são indicativos e não compromissivos. A LAMBORGHINI reserva-se o direito de efectuar,
sem a obrigação de pré-aviso, todas as modificações que considerar necessárias para a melhoria do produto.