HIdRos LSA/HP Series User manual

MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English Rev. A 07-2018
HIGH EFFICIENCY AIR TO WATER HEAT PUMPS
LSA/HP
SERIES
Multiple instructions:
&RQVXOWWKHVSHFL¿FSDUW
Read and understand
the instructions before
undertaking any work on
the unit
RETAIN FOR FUTURE REFERENCE
Incorporated in this document are the following:
• Declaration of conformity
• Technical manual
• Dimensional drawing
TECHNICAL MANUAL
Original instructions

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MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
Declaration of conformity
We declare under our own responsibility that the below equipment complies in all parts with the CEE and EN directives.
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Reproduction, data storage and transmission, even partial, of this publication, in any form, without the prior written authorisation of the
Company, is prohibited. The Company can be contacted for all inquiries regarding the use of its products.
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equipment and instructions regarding use and maintenance at any time, without notice.

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MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
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INDEX
1. INTRODUCTION.....................................................................................................................................................................................
1.1 Preliminary information......................................................................................................................................................
1.2 Aim and content of the manual .........................................................................................................................................
1.3 How to store this manual ...................................................................................................................................................
1.4 Manual updates .................................................................................................................................................................
1.5 How to use this manual .....................................................................................................................................................
1.6 Potential risks ....................................................................................................................................................................
1.7 General description of symbols used.................................................................................................................................
1.8 Safety symbols used..........................................................................................................................................................
1.9 Limitations and prohibited use...........................................................................................................................................
 8QLWLGHQWL¿FDWLRQ ............................................................................................................................................................
2. SAFETY .................................................................................................................................................................................................
2.1 Warning re potentially hazardous toxic substances...........................................................................................................
2.2 Refrigerant handling ..........................................................................................................................................................
2.3 Prevention of inhalation of high vapor concentrations.......................................................................................................
2.4 Procedures in the event of accidental release of refrigerant .............................................................................................
2.5 Main Toxicological information on the type of refrigerant used..........................................................................................
2.6 First aid measures .............................................................................................................................................................
3. TECHNICAL CHARACTERISTICS .........................................................................................................................................................
3.1 Unit description..................................................................................................................................................................
3.2 Other versions ...................................................................................................................................................................
3.3 Accessories description .....................................................................................................................................................
3.5 Technical data....................................................................................................................................................................
3.6 Operation limits..................................................................................................................................................................
3.8 Correction tables................................................................................................................................................................
3.9 Sound data ........................................................................................................................................................................
4. INSTALLATION .......................................................................................................................................................................................
4.1 General safety guidelines and and use of symbols ...........................................................................................................
4.2 Workers’ health and safety ...............................................................................................................................................
4.3 Personal protective equipment .........................................................................................................................................
4.4 Inspection ..........................................................................................................................................................................
4.5 Storage ..............................................................................................................................................................................
4.6 Unpacking..........................................................................................................................................................................
4.7 Lifting and handling............................................................................................................................................................
4.8 Location and minimum technical clearances.....................................................................................................................
4.9 Installation of rubber vibration dampers (KAVG)................................................................................................................
4.10 Serial interface card RS485 (INSE).................................................................................................................................
4.11 Installation of condensate drip tray (BRCA).....................................................................................................................
4.12 Hydraulic connections......................................................................................................................................................
4.13 Chemical characteristics of the water..............................................................................................................................
4.14 User circuit minimum water content.................................................................................................................................
4.15 Expansion tank technical data.........................................................................................................................................
4.16 Hydraulic components .....................................................................................................................................................
4.17 Filling the hydraulic circuit................................................................................................................................................
4.18 Emptying the installation..................................................................................................................................................
4.19 Wiring connections: Preliminary safety information.........................................................................................................
4.20 Electric data.....................................................................................................................................................................
4.21 Electric connections.........................................................................................................................................................
4.22 Refrigerant circuit layout..................................................................................................................................................
5. UNIT START UP......................................................................................................................................................................................
5.1 Preliminary Checks............................................................................................................................................................
5.2 Description of the control panel ........................................................................................................................................
5.3 Remote control panel.........................................................................................................................................................
6. USE .........................................................................................................................................................................................................
6.1 Switch the unit on .............................................................................................................................................................

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MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
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6.2 Stop ...................................................................................................................................................................................
6.3 Stand-by ............................................................................................................................................................................
6.4 How to change the set points ............................................................................................................................................
6.5 Parameters list...................................................................................................................................................................
6.6 Acoustic signal silencing ....................................................................................................................................................
6.7 Alarm reset.........................................................................................................................................................................
6.8 Display alarm history .........................................................................................................................................................
7. MAINTENANCE OF THE UNIT...............................................................................................................................................................
7.1 General warnings...............................................................................................................................................................
7.2 Access to the unit...............................................................................................................................................................
7.3 Periodical checks...............................................................................................................................................................
7.4 Refrigerant circuit repair ....................................................................................................................................................
8. DECOMMISSIONING.............................................................................................................................................................................
8.1 Disconnect the unit ...........................................................................................................................................................
8.2 Disposal, recovery and recycling ......................................................................................................................................
8.3 RAEE directive (only for EC countries)..............................................................................................................................
9. DIAGNOSIS AND TROUBLESHOOTING ..............................................................................................................................................
 )DXOW¿QGLQJ ......................................................................................................................................................................
10. DIMENSIONAL DRAWINGS .................................................................................................................................................................

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MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
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1. INTRODUCTION
1.1 Preliminary information
1.2 Aim and content of the manual
1.3 How to store this manual
1.4 Manual Update
1.5 How to use this manual
Reproduction, storage or transmission of any part of this publication in any form, without the prior written consent of the Company, is pro-
hibited.
The unit to which these instructions refer, is designed to be used for the the purposes described and to be operated in accordance with
these instructions.
The Company will not be liable for claims for damage caused to persons, animals, material goods or property caused by improper installa-
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This document is intended to provide information only and does not form a contract with third parties.
The Company pursues a policy of constant improvement and development of its products and therefore reserves the right to change the
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These instructions are intended to provide the information required for the selection, installation, use and maintenance of the unit.
They have been prepared in accordance with the European Union laws and with the technical standards in force at the date of issue of the
instructions.
The instructions contain all the necessary information to prevent any reasonably foreseeable misuse.
The manual must be kept in a suitable place with easy access for users and operators, protected from dust and damp.
The manual must always accompany the unit during the entire life cycle of the same and therefore must be transferred to any subsequent
user.
It is recommended that the manual is updated to the latest revision available.
If updates are sent to the customer they must be added to this manual.
The latest information regarding the use of its products is available by contacting the Company.
The manual is an integral part of the unit.
Users or operators must consult the manual before performing any operation and especially so when transporting, han-
dling, installating, maintaining, or dismantling the unit in order to eliminate uncertainty and reduce risk.
In these instructions symbols have been used (described in the following paragraphs) to draw the attention of operators
and users to the operations that have a higher risk and which must be performed safely.

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1.6 Potential Risks
Whilst the unit has been designed to minimize any risk posed to the safety of people who will interact with it, it has not been technically
possible to eliminate completely the causes of risk. It is therefore necessary to refer to the requirements and symbolism below:
LOCATION OF
RISK POTENTIAL RISK METHOD OF INJURY PRECAUTIONS
Thermal heat
exchangers. Small stab wounds. Contact Avoid any contact,
use protective gloves.
Fan and fan grilles. Cuts, eye damage,
broken bones.
Insertion of sharp objects
through the grid while the fans
are operating.
Never put objects through the pro-
tection grilles.
Internal component:
compressors and
discharge pipes
Burns. Contact Avoid any contact, use protective
gloves.
Internal component:
electric cables and
metallic parts
Electrocution,
severe burns.
Defect in the supply cable in-
sulation, live metallic parts.
Adequate protection of power ca-
bles, ensure correct earthing of all
metal parts.
External to unit:
unit enclosure
Poisoning,
severe burns.
Fire due to short circuit or
overheating of the supply ca-
ble external to unit.
Size cables and mains protection
system in accordance with iee regu-
lations.
Low pressure safety
valve.
Poisoning,
severe burns.
High evaporating pressure
causing a refgrigerant dis-
charge during maintenance.
Carefully check the evaporating
pressure during the maintenance
operations.
High pressure safety
valve.
Poisoning,
severe burns,
hearing loss.
Activation of the high pressure
safety valve with the refriger-
ant circuit open.
If possible, do not open the refrig-
erant circuit valve; carefuly check
the condensing pressure; use all
the personal protective equipment
required by law.
Entire unit ([WHUQDO¿UH
Fire due to natural disasters
or combustions of elements
nearby unit
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equipment
Entire unit
Explosion, injuries, burns, poi-
soning, folgoramento for natural
disasters or earthquake.
Breakages, failures due to natu-
ral disasters or earthquake
Plan the necessary precautions both
electrical (suitable differential ma-
gneto and electrical protection of the
supply lines; greatest care during the
connections of the metal parts), and
mechanical (special anchors or sei-
smic vibrations to prevent breakages
or accidental falls ).

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BANNED
A black symbol inside a red circle with a red diagonal indicates an action that should not be performed.
WARNING
A black graphic symbol added to a yellow triangle with black edges indicates danger.
ACTION REQUIRED
A white symbol inserted in a blue circle indicates an action that must be done to avoid a risk.
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Safety symbols combined in accordance with ISO 3864-2:
1.7 General Description of Symbols Used
Safety symbols combined in accordance with ISO 3864-2:

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GENERAL RISK
Observe all signs placed next to the pictogram. The failure to follow directions may create a risk situation that may
be injurious to the user.
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram.
The symbol indicates components of the unit and actions described in this manual that could create an electrical
hazard.
MOVING PARTS
The symbol indicates those moving parts of the unit that could create risk.
HOT SURFACES
The symbol indicates those components with high surface temperature that could create risks.
SHARP SURFACES
The symbol indicates components or parts that could cause stab wounds.
EARTH CONNECTION
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READ AND UNDERSTAND THE INSTRUCTIONS
Read and understand the instructions of the machine before any operations.
RECOVER OR RECYCLE MATERIAL
1.8 Safety symbols used
The unit is not suitable for operations in environments:
• excessively dusty or potentially explosive atmospheres;
• where there are vibrations;
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• where there are aggressive atmospheres
The machine is designed and built exclusively for the uses described in “Limitations of use” of the technical manual.
Any other use is prohibited because it may pose a potential risk to the health of operators and users.
1.9 Limitations and prohibited use

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Manufacturer: PD322111
Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto
Contains fluorinated greenhouse gasses covered by the Kyoto protocol
Modello
Model
1LSA.014A-1A 123456
1 16/2017
R410A
2,6 kg 5,43 ton
2 2088
400v-3PH+N-50Hz
22,1 bar 41,5 bar
-30 °C +130 °C -30 °C +130 °C
14,00 A 6,70 kW
Matricola
Serial number
Categoria PED
PED Category
Tipo refrigerante
Refrigerant type
Tensione-Fasi-Frequenza
Voltage-Phases-Frequency
LATO BASSA PRESSIONE
LOW PRESSURE SIDE
LATO ALTA PRESSIONE
HIGH PRESSURE SIDE
Gruppo fluido
Fluid group GWP
Carica refrigerante
Refrigerant charge
C1
C3
C2
Min Max Min Max
C4
F.L.A. (A) F.L.I. (kW)
PS
Temperatura di progetto
Design temperature
Peso a vuoto
Weight
Temperatura di progetto
Design temperature
CO2Equivalente
CO2Equivalente
Data di fabbricazione
Manifacture date
PS

22,1 b
ar
A P
SSURE SIDE
nza
ency
ONE
Hz
14
C
0
CO
2
Equ
Equiva
5,43 ton
valente
ente
Via E. Mattei, 20
35028 Piove di Sacco PD - Italy
[phone]
[email protected]
www.hidros.eu
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
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Each unit has a rating plate that provides key information regarding the machine.
The rating plate may differ from the one shown below as the example is for a standard unit without accessories.
For all electrical information not provided on the label, refer to the wiring diagram.
A facsimile of the label is shown below:
The product label should never be removed from the unit.

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For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets
available from the refrigerant and oil manufacturers.
2.1 Warning re potentially hazardous toxic substances
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2. SAFETY
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The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate.
(19,5210(17$/3527(&7,21Read the ecological information and the following instructions carefully.
Main Ecological Information Regarding the Types of refrigerants Fluids used.
2.1.3 Persistence and degradation
2.1.4 Effects of discharges
2.1.5 Exposure controls and personal protection
2.1.6 Professional exposure limits
2.2 Refrigerant handling
The refrigerants used decompose in the lower atmosphere (troposphere) relatively quickly. The decomposed products are highly dispersible
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compounds (as stipulated in the guidelines to the UNECE). The constituent refrigerants of R410A (R32, R125 and R134a), do not damage
the ozone layer. These substances are regulated under the Montreal Protocol (revised 1992) and regulations EC no. 2037/200 of 29 June
2000.
Discharges into the atmosphere of this product does not cause a long-term contamination.
Wear protective clothing and gloves, protect your eyes and face
R410A
HFC-32 TWA 1000 ppm
HFC-125 TWA 1000 ppm
Users and maintenance personnel must be adequately informed about the possible risks of handling potentially
toxic substances. Failure to follow such instructions can cause damage to personnel or to the unit.
2.3 Prevent inhalation of high vapor concentration
Atmospheric concentrations of refrigerant must be minimized and kept to a level that is below the occupational exposure limit. Vapor is
heavier than air and can form dangerous concentrations near the ground where the ventilation rate is lower. Always ensure adequate venti-
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between liquid refrigerant and the eyes or skin.

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MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
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2.6.1 Inhalation
Move the person away from the source of exposure, keep him/her warm and let him/her rest. Administer oxygen if necessary. Attempt
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assistance.
2.6.2 Contact with skin
In case of contact with skin, wash immediately with lukewarm water. Thaw tissue using water. Remove contaminated clothing. Clothing may
stick to the skin in case of frostbite. If irritation, swelling or blisters appear, seek medical assistance.
2.6.3 Contact with eyes
Rinse immediately using an eyewash or clean water, keeping eyelids open, for at least ten minutes. Seek medical assistance.
2.6.4 Ingestion
Do not induce vomiting. If the injured person is conscious, rinse his/her mouth with water and make him/her drink 200-300ml of water. Seek
immediate medical assistance.
2.6.5 Further medical treatment
Treat symptoms and carry out support therapy as indicated. Do not administer adrenaline or similar sympathomimetic drugs following
exposure, due to the risk of cardiac arrhythmia.
2.4 Procedures to be adopted in the event of accidental release of refrigerant
2.5 Main Toxicological Information Regarding the Type of refrigerant used
2.5.1 Inhalation
A high atmospheric concentration can cause anaesthetic effects with possible loss of consciousness. Prolonged exposure may lead to
irregular heartbeat and cause sudden death. Higher concentrations may cause asphyxia due to the reduced oxygen content in the atmo-
sphere.
2.5.2 Contact with skin
Splashes of nebulous liquid can produce frostbite. Probably not hazardous if absorbed trough the skin. Repeated or prolonged contact may
remove the skin’s natural oils, with consequent dryness, cracking and dermatitis.
2.5.3 Contact with eyes
Splashes of liquid may cause frostbite.
2.5.4 Ingestion
While highly improbable, may produce frostbite.
Ensure suitable personal protection (especially respiratory protection) during cleaning operations.
If deemed safe, isolate the source of the leak. If the leakage is small and if adequate ventilation is provided, allow the refrigerant to evapo-
rate. If the loss is substantial ensure that measures are taken to adequately ventilate the area.
Contain spilled material with sand, earth or other suitable absorbent material.
Do not allow the refrigerant to enter drains, sewers or basements, as pockets of vapor can form.
2.6 First Aid Measures
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3. TECHNICAL CHARACTERISTICS
3.1 Unit description
The units has been designed for small and medium residential and commercial applications. They are suitable for generating chilled water at
7°C, commonly used in applications with fan coils and/or air handling units.
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solution to be selected.
3.1.1 Frame
All units are made from hot-galvanised sheet steel, painted with polyurethane powder enamel and stoved at 180°C to provide maximum
protection against corrosion. The frame is self-supporting with removable panels. All screws and rivets used are made from stainless steel.
The standard colour of the units is RAL 9018.
3.1.2 Refrigerant circuit
The refrigerant utilised is R410A. The refrigerant circuit is assembled using internationally recognised brand name components with all
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(for reversible version only), one way valve (for reversible version only), liquid receiver (for reversible version only), Schraeder valves for
maintenance and control and pressure safety device (for compliance with PED regulations).
3.1.3 Compressors
The compressor is of the rotary type (size 06 - 08) and scroll with crankcase heater and thermal overload protection by means of a klixon
embedded in the motor winding. It is mounted on rubber vibration dampers and it is supplied, as standard, with a sound-proof cover in order
to reduce noise in operation. Access for inspection and maintenance of the compressor is through the front panel of the unit.
3.1.4 Condenser
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PLQLXP¿QVLQRUGHUWRPD[LPLVHKHDWWUDQVIHU)XUWKHUPRUHWKHFRQGHQVHUGHVLJQJXDUDQWHHVDORZDLUVLGHSUHVVXUHGURSWKXVHQDEOLQJ
WKHXVHRIORZURWDWLRQVSHHGDQGKHQFHORZQRLVHHPLVVLRQIDQV7KHFRQGHQVHUVFDQEHSURWHFWHGE\DPHWDOOLF¿OWHUWKDWLVDYDLODEOH
as an accessory.
3.1.5 Fans
The fans are direct drive axial type with aluminium aerofoil blades, are statically and dynamically balanced and are supplied complete with
DVDIHW\IDQJXDUGFRPSO\LQJZLWKWKHUHTXLUHPHQWVRI(17KH\DUH¿[HGWRWKHXQLWIUDPHYLDUXEEHUDQWLYLEUDWLRQPRXQWLQJV7KH
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have a moisture protection rating of IP 54.
3.1.6 Evaporators
The evaporator is a braze welded, plate type heat exchanger, manufactured from AISI 316 stainless steel. Utilisation of this type of exchan-
ger results in a massive reduction of the refrigerant charge of the unit compared to a traditional shell-in-tube evaporator. A further advan-
WDJHLVDUHGXFWLRQLQWKHRYHUDOOGLPHQVLRQVRIWKHXQLW7KHHYDSRUDWRUVDUHIDFWRU\LQVXODWHGZLWKÀH[LEOHFORVHFHOOPDWHULDODQGFDQEH
¿WWHGZLWKDQDQWLIUHH]HKHDWHUDFFHVVRU\(DFKHYDSRUDWRULV¿WWHGZLWKDWHPSHUDWXUHVHQVRURQWKHGLVFKDUJHZDWHUVLGHIRUDQWLIUHH]H
protection.
3.1.7 Electric enclosure
The enclosure is manufactured in order to comply with the requirements of the electromagnetic compatibility standards CEE 73/23 and
89/336. Access to the enclosure is achieved by removing the front panel of the unit. The following components are supplied as standard on
all units: main switch, thermal overloads (protection of pumps and fans), compressor fuses, control circuit automatic breakers, compressor
contactors, fan contactors and pump contactors. The terminal board has volt free contacts for remote ON-OFF, summer / winter change
over (heat pumps only) and general alarm. For all three phase units, a sequence relay that disables the power supply in the event that the
SKDVHVHTXHQFHLVLQFRUUHFWVFUROOFRPSUHVVRUVFDQEHGDPDJHGLIWKH\URWDWHLQWKHZURQJGLUHFWLRQLV¿WWHGDVVWDQGDUG
3.1.8 Microprocessors
All units are supplied with microprocessor controls loaded with ACTIVE autoadapthive strategy. The microprocessor controls the following
functions: control of the water temperature, antifreeze protection, compressor timing, compressor automatic starting sequence, alarm reset,
volt free contact for remote general alarm, alarms and operation LED’s. If required (available as an option), the microprocessor can be
FRQ¿JXUHGLQRUGHUIRULWWRFRQQHFWWRDVLWH%06V\VWHPWKXVHQDEOLQJUHPRWHFRQWURODQGPDQDJHPHQW7KHWHFKQLFDOGHSDUWPHQWFDQ

Rev. A 07-2018
13
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
discuss and evaluate, in conjunction with the customer, solutions using MODBUS protocols. The autoadaptive control system ACTIVE is an
advanced strategy that continuously monitors the temperature of the inlet and outlet water thereby determining the variation of the building
thermal load. By then adjusting the outlet water temperature set point the compressor start/stop cycle can be accurately controlled thus
RSWLPL]LQJWKHKHDWSXPSHI¿FLHQF\DQGPD[LPL]LQJWKHRSHUDWLRQDOOLIHRIWKHXQLWVFRPSRQHQW¶V8VHRI$&7,9(DXWRDGDSWLYH&RQWURO
HQDEOHVWKHPLQLPXPZDWHUFRQWHQWWREHUHGXFHGIURPWKHWUDGLWLRQDOONZWRONZ$IXUWKHUEHQH¿WRIWKHUHGXFHGZDWHUUHTXLUHPHQW
is that units can be used in installations without a buffer tank thereby reducing the space requirements, thermal losses and costs.
3.1.9 Control and protection devices
All units are supplied with the following control and protection devices: defrost thermostat, which signals to the microprocessor control that
a defrost cycle is needed and controls its termination, high pressure switch with automatic reset, compressor thermal overload protection,
fans thermal overload protection.
3.2.1 Reversible version (HP)
The reversible versions are provided with a 4 way reversing valve and are designed to produce hot water up to a temperature of 48°C.
7KH\DUHDOZD\VVXSSOLHGZLWKDOLTXLGUHFHLYHUDQGDVHFRQGWKHUPRVWDWLFYDOYHLQRUGHUWRRSWLPL]HWKHHI¿FLHQF\RIWKHUHIULJHUDQWF\FOHLQ
heating and in cooling. The microprocessor controls defrost automatically (when operating in low ambient conditions) and also the summer/
winter change over.
3.2.2 Units with integrated hydraulic kit, tank & pump (A1ZZ)
The units have available, as an option, a built in hydraulic kit that includes:
:DWHUWDQNLQGLIIHUHQWVL]HVGHSHQGLQJRQWKHVL]HRIWKHXQLWIDFWRU\LQVXODWHGZLWKÀH[LEOHFORVHFHOOPDWHULDODQGSUHSDUHGIRUWKHLQVWDO-
lation of an antifreeze kit (option) and a water pump, centrifugal type, suitable for chilled water operation. The pump is directly controlled
by the microprocessor.
7KHZDWHUWDQNLVLQVWDOOHGRQWKHKRWZDWHURXWOHWZDWHUVLGHLQRUGHUWRPLQLPL]HÀXFWXDWLRQVLQWKHZDWHUWHPSHUDWXUHGXHWRWKHFRPSUHV-
sors cycling at part load conditions.
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3.2.3 Units with integrated hydraulic kit, pump no tank (A1NT-A2NT)
The units have available, as an option, a built in hydraulic kit that incorporates a water pump, centrifugal type, suitable for chilled water
operation. The pump is directly controlled by the microprocessor.
$OVRSURYLGHGLQWKHK\GUDXOLFFLUFXLWDUHDQH[SDQVLRQYHVVHOSUHVVXUHUHOLHIYDOYHDQGV\VWHPLVRODWLQJYDOYHVZLWK¿WWLQJV
3.2 Other versions

Rev. A 07-2018
14
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
3.3.1 Low noise version (LS00)
This version includes the complete acoustic insulation of the unit (compressor + heat exchangers vanes) with compressor jackets and
insulating material made with high density media and the interposition of heavy bitumen layer.
3.3.2 Rubber vibration dampers (KAVG)
To be installed beneath the unit base and the ground to avoid the transmission of vibrations (and the noise) to the building.
3.3.3 Spring vibration dampers (KAVM)
To be installed beneath the unit base and the ground to avoid the transmission of vibrations (and the noise) to the building.
3.3.4 Antifreeze heater (RAEV)
This kit, used in units without a hydraulic kit, comprises a “self-heating” electric cable that is wrapped around the user and domestic hot
water exchanger (SW6 Units only) and the water circuit pipework. This device is controlled by the microprocessor.
3.3.5 Antifreeze kit (only A1 versions) (RAES)
ThisNLWXVHGRQXQLWV¿WWHGZLWKDK\GUDXOLFNLWFRPSULVHVD³VHOIKHDWLQJ´HOHFWULFFDEOHWKDWLVZUDSSHGDURXQGWKHXVHUDQGGRPHVWLFKRW
ZDWHUH[FKDQJHU6:8QLWVRQO\WKHZDWHUFLUFXLWSLSHZRUNDQGLQFOXGHVDQDUPRXUHGHOHFWULFKHDWHUWKDWLV¿WWHGLQVLGHWKHZDWHUWDQN
This device is controlled by the microprocessor.
3.3.6 Pressure gauges (MAML)
These enable the standing charge and the operating pressures to be monitored.
3.3.7 Electronic soft starter (DSSE)
TheVRIWVWDUWHUUHGXFHVWKHSHDNVWDUWLQJFXUUHQWGRZQWRPD[LPXPRIWKHQRPLQDOSHDNYDOXH7KHGHYLFHFDQRQO\EHLQVWDOOHGLQ
the factory.
3.3.8 Remote control panel (PCRL)
This panel can be mounted up to 50m (maximum) from the unit and replicates all of the control functions. It is connected using a twin cable
of 2.5 mm2 section.
3.3.9 RS485 serial interface card modbus protocol (INSE)
This controller card enables the controller to communicate with other devices on a BMS using Modbus protocol.
3.3.10 Condensate discharge drip tray with antifreeze heater (BRCA)
InstalledXQGHUWKH¿QQHGKHDWH[FKDQJHUWKLVLVXVHGWRFROOHFWWKHFRQGHQVDWHJHQHUDWHGGXULQJWKHKHDWLQJPRGHRSHUDWLRQ,WLV¿WWHG
ZLWKWUDFHKHDWLQJWRSUHYHQWLFHIRUPDWLRQLQORZDPELHQWFRQGLWLRQV7KLVDFFHVVRU\PD\RQO\EHIDFWRU\¿WWHG
3.3.11 Electronic expansion valve (VTEE)
TheHOHFWURQLFH[SDQVLRQYDOYHHQDEOHVWKHPD[LPXPSRVVLEOHHI¿FLHQF\WREHDFKLHYHGE\PD[LPLVLQJWKHHYDSRUDWRUKHDWH[FKDQJHPLQL-
mising the reaction time to load variations and optimising the superheat . It is strongly recommended for use in systems that will experience
large load variations.
3.3.12 Fan speed control (DCCF)
ThisGHYLFHDOORZVXQLWRSHUDWLRQLQFRROLQJPRGHXQGHUORZDPELHQWWHPSHUDWXUHEHORZ&E\UHGXFLQJFRQGHQVHUDLUÀRZDQGRE-
taining in this way permissible operating parameters. This device can be used as well to reduce unit sound level emission when ambient
WHPSHUDWXUHLVGHFUHDVLQJLHGXULQJQLJKWWLPH)DQVSHHGFRQWUROLVIDFWRU\SUHVHW7KHYDOXHVPXVWQHYHUEHPRGL¿HG
3.3.13 Partial heat recovery (RP00)
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3.3 Accessories description

Rev. A 07-2018
15
LSA/HP 06 08 10 14 16 21 26 31 36 41
– – – –
–
–
–
–
VSLI
LS00
DCCF
RP00---
KAVG
KAVM
DSSE
RAEV
RAES
MAML
BRCA
A1ZZ
A1NT
PCRL
INSE
VTEE
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
Standard, Optional, – Not available.
Main switch
Flow switch
Microprocessor control
General alarm digital output
Remote on/off digital input
Liquid line solenoid valve
LS low noise version
Low ambient condensing pressure control
Partial heat recovery
Rubber anti-vibration mounts
Spring anti-vibration mounts
Electronic soft starter
Evaporator antifreeze heater (basic version only)
Antifreeze Kit (only for A version)
Refrigerant circuit pressure gauges
Condensate discharge drip tray *
Hydraulic kit pump + tank (A1ZZ)
Hydraulic kit pump no tank(A1NT)
Remote control panel
Serial interface card RS485
Electronic thermostatic valve
* Condensate discharge drip tray with antifreeze heater (Only for versions HP)
3.3.14 Accessories availability

Rev. A 07-2018
16
LSA/HP 06 08 10 14 16 21 26 31 36 41
kW 5,7 7,5 8,5 14,0 15,5 20,5 26,6 30,0 33,0 39,0
kW 1,9 2,5 2,8 4,7 5,7 6,8 8,8 10,5 11,8 13,8
W/W 3,0 3,0 3,0 2,9 2,7 3,0 3,0 2,9 2,8 2,8
kW 5,9 7,7 9,2 14,9 17,2 22,0 29,5 33,5 36,5 44,4
kW 1,5 2,0 2,3 3,9 4,3 5,2 6,8 8,2 9,0 10,7
W/W 3,9 3,9 4,0 3,8 4,0 4,3 4,3 4,1 4,1 4,2
A+ A+ A+ A+ A+ A+ A+ A+ A+ A+
kWh/kWh 3,38 3,32 3,40 3,35 3,23 3,38 3,21 3,21 3,21 3,29
132,2 129,8 132,9 131,1 126,2 132,3 125,4 125,4 125,5 128,4
V/Ph/Hz 230/1/50 230/1/50 230/1/50 400/3+N/50 400/3+N/50 400/3+N/50 400/3+N/50 400/3+N/50 400/3+N/50 400/3+N/50
A60,6 68,0 99,0 66,0 77,0 96,8 119,8 120,6 142,6 176,6
A13,4 18,1 23,0 13,3 17,0 17,8 23,8 27,6 33,6 36,6
m3/h 2.800 3.350 3.150 7.200 7.000 8.500 8.500 10.800 10.800 10.800
n°/kW 1 x 0,12 1 x 0,2 1 x 0,2 2 x 0,2 2 x 0,2 2 x 0,2 2 x 0,2 2 x 0,5 2 x 0,5 2 x 0,5
n°/n° 1 / 1 1 / 1 1 / 1 1 / 1 1 / 1 1 / 1 1 / 1 1 / 1 1 / 1 1 / 1
2088 2088 2088 2088 2088 2088 2088 2088 2088 2088
Kg 3,0 4,2 3,7 3,7 5,0 7,3 8,0 6,5 6,5 8,0
t 6,3 8,8 7,7 7,7 10,4 15,2 16,7 13,6 13,6 16,7
dB (A) 68 68 68 69 69 74 74 79 79 79
dB (A) 37 37 37 38 38 43 43 47 47 47
kW 0,2 0,2 0,2 0,5 0,5 0,6 0,6 0,9 0,9 1,3
kPa 56,7 56,5 45,9 109,3 109,3 136,8 79,2 96,4 41,2 170,1
l40 40 40 40 60 60 60 180 180 180
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
Performances are referred to the following conditions:
(1) Cooling: ambient temperature 35°C; water temperature 12/7°C.
(2) Heating: ambient temperature 7°C (DB), 6°C (WB); water temperature 30/35°C.
(3) Average conditions, low temperature, variable - Reg EU 811/2013.
(4) Sound power level in accordance with ISO 3744 (LS-Version).
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3.4 Technical data
Cooling capacity (EN14511) (1)
Total input power (EN14511) (1)
EER (EN14511) (1)
Heating capacity (EN14511) (2)
Total input power (EN14511) (2)
COP (EN14511) (2)
Energy Class (3)
SCOP (3)
ƾVK(3)
Power supply
Peak current
Max input current
$LUÀRZ
Fans
Compressors / Circuits
Global warming potential (GWP)
Refrigerant charge
Equivalent CO2charge
Sound power (4)
Sound pressure (5)
Water pump input power
Pump available static pressure (1)
Water tank volume
The refrigerant data may change without notice. It is therefore necessary to refer always to the silver label placed
on the unit.

Rev. A 07-2018
17
0,8
0,9
1,0
1,1
1,2
1,3
1,4
1,5
1,6
5 6 7 8 9 10 11 12 13 14 15 16 17 18
20°C
25°C
30°C
35°C
40°C
20°C
25°C
30°C
35°C
40°C
0,7
0,8
0,9
1,0
1,1
1,2
5 6 7 8 9 10 11 12 13 14 15 16 17 18
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
3.4.1 LSA - Cooling capacity and compressors input power
External temp. 43°C
User water out temperature (°C)
User water out temperature (°C)
Input power correction factorCooling capacity correction factor
The cooling capacity of the compressor is obtained by multiplying the nominal values (PF PA), with water produced at 7 ° C, shown at page
16 and 17, for respective correction factors. For each curve, the difference between the temperature of water entering (In) and leaving (Out)
the users heat exchanger is 5° C.
The data shown in the graph are generic and only intend to show the development of cooling and electrical power,in
DFFRUGDQFHZLWKFKDQJLQJRIZRUNLQJFRQGLWLRQV)RUDSUHFLVHGH¿QLWLRQRIWKHGDWDSOHDVHUHIHUWRWKH3URGXFW
Selection Software.
External temp. 43°C

Rev. A 07-2018
18
0,9
1,0
1,1
1,2
1,3
1,4
1,5
5 0 5 101520
0,7
0,8
0,9
1,0
1,1
1,2
-5 0 5 10 15 20
45°C
45°C
35°C
35°C
50°C
50°C
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
Ambient temperature (dry bulb) (°C)
Ambient temperature (dry bulb) (°C)
Input power correction factorHeating capacity correction factor
3.4.2 LSA/HP - Heating capacity and compressors input power
The capacity of the compressor is obtained by multiplying the nominal values (PF PA), with water produced at 7 ° C, shown at page 16 and
17, for respective correction factors. For each curve, the difference between the temperature of water entering (In)and leaving (Out) the
users heat exchanger is 5° C.
The data shown in the graph are generic and only intend to show the development of cooling and electrical power,in
DFFRUGDQFHZLWKFKDQJLQJRIZRUNLGU\QJFRQGLWLRQV)RUDSUHFLVHGH¿QLWLRQRIWKHGDWDSOHDVHUHIHUWRWKH3URGXFW
Selection Software.
Water temperature Produced
Water temperature Produced

Rev. A 07-2018
19
10
20
30
40
50
60
4683 3,5 5 7 94,5 6,5 8,55,5 7,5
10
20
30
40
50
60
0123450,5 1,5 2,5 3,5 4,5
14
08÷10
21÷26
41
31÷36
16
06
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
LSA/HP+LJKHI¿FLHQF\DLUWRZDWHUKHDWSXPSV
3.4.3 User heat exchanger water pressure drops
:DWHUÁRZP3/h)
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Pressure drop (kPa)Pressure drop (kPa)

Rev. A 07-2018
20
0,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
80,0
00,511,522,50,75 1,75 2,750,25 1,25 2,25 3
06 08÷10
10,0
30,0
50,0
70,0
90,0
110,0
130,0
150,0
170,0
190,0
210,0
12345678910
14 16 41
36
31
21÷26
MTEC.3630.GB-A-1 Operation and maintenance manual LSA series English
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3.4.4 LSA/A1 Water pump available static pressure
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Available static pressure (kPa)Available static pressure (kPa)