Hidros Lzt series User manual

HIGH EFFICIENCY AIR TO WATER HEAT PUMPS

LZT

SERIES

TECHNICAL MANUAL

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

DICHIARAZIONE DI CONFORMITA'

DECLARATION DE CONFORMITE

DECLARATION OF CONFORMITY

KONFORMITÄTSERKLÄRUNG

FÖRSÄKRAN OM ÖVERENSSTÄMMELSE

BRUGINE

1370

Organismo notificato / Organisme notifié

Notified body/Meldestelle/Anmält organ:

Bureau Veritas Italia Spa

Macchina Modello / Unité Modéle / UNIT Model

Gerät Typ / Enhet Modell:

Matricola / Matricule / Serial no.

Serie nummer / Serienr

Direttive CEE / Directives CEE / EEC directive / CEE Richtlinie / EEC-direktiv: (1)

- 2006/42 CE Sicurezza delle macchine / Securité des machines / Safety of machinery / Sicherheit von Maschines / Maskinsäkerhet.

- 2004/108 C Compatibilità elettromagnetica / Compatibilitè élettromagnétique / Elettomagnetic compatibility / Elektromagnetische

Verträglichkeit / Elektromagnetisk kompatibilitet.

- 2006/95 CE Bassa tensione / Baisse tension / Low Voltage / Niedrige Spannung / Låg spännin

- 97/23 CE Dispositivi in pressione / Equipement sous pression / Under pressure devices / Drucksysteme entspricht / Tryckbärande anordnin

- 2002/95 CE Sostanze pericolose nelle apparecchiature elettr. / Substances dangereuses dans les équipements électr.

Hazardous substances in electr. equipment / Verwendung bestimmter gefährlicher Stoffe in der Elektronikgeräten

- 2002/96 CE Rifiuti di apparecchiature elettr. / déchets d'équipements électr. / Waste in electr. Equipment

Elektro- und Elektronik-Altgeräte / eller innehåller elektriska eller elektroniska produkter

e loro successive integrazioni / et leurs intégrations suivantes / and their following amendments / und ihre folgende

Verkündigungen /och deraas följande tillägg.

- EN 60204-1 Sicurezza del macchinario-Equipaggiamento elettrico-Parte 1: Regole generali / Securité des machines-Equipement electrique-

Partie 1: Règles générales / Safety machinery-electrical equipment of machines -Part 1: General requirements / 'Sicherheit von

Maschinen; elektrische Ausrüstung von Maschinen. Teil 1: allgemeine Anforderung / Maskinsäkerhet-Elutrustning för maskiner-

Allmänna fordringar.

- Normative - Normes - Standards - Rechtsvorschriften - Normer : (2)

- EN 61000-6-3 Compatibilità elettromagnetica-Norma generica sull'emissione-Parte 3: Ambiente residenziale / Compatibilité électromagnétique-

Norme génériqué émission-Partie 3: Environnement residentiel / Electromagnetic compatibility-Generic emission standard-Part 4:

Residential environment / Elektromagnetische Verträglichkeit-Allgemeine Bestimmung über die Emission-Teil 3: Störaussendung für

Wohnbereich / Elektromagnetisk kompatibilitet- Emission-Del 3: Generella fordringar - Emission från utrustning i bostäder, kontor,

- EN 61000-6-2 Compatibilità elettromagnetica-Norma generica sull'immunità-Parte 2: Ambiente industriale / Compatibilité électromagnétique-Norme

génériqué immunité-Partie 2: Environnement industriel / Electromagnetic compatibility-Generic immunity standard-Part 2: Industrial

environment Flüssigkeitssammler* / Reciver* Elektromagnetische Verträglichkeit-Allgemeine Bestimmung über die Immunität-

Teil 2: industrieller Raum / Elektromagnetisk kompatibilitet -Immunitet-Del 2: Generella fordringar på utrustning i industrimiljö.

- EN 12100-2 Sicurezza del macchinario - Concetti fondamentali, principi generali di progettazione. Specifiche e principi tecnici. / Critères

fondamentaux, principes généraux de projet. Specifications et principes techniques. / Safety of macchinary - Basic concepts,

General principles for design Part 2: Technical principles specification / Grundbegriffe, allgemeine. Gestaltungsleitsätze, technische

Leitsätze und Spezifikationen. Maskinsäkerhet-Grundläggande begrepp, allmänna konstruktionsprinciper-Del 2: Tekniska principer

- EN 294 Sicurezza del macchinario - Distanze di sicurezza per impedire il raggiungimento di zone pericolose con gli arti superiori. Distances

de securité pour empecher le contact des membres supérieurs avec des zones dangereuses. Safety standards (avoidance of

personal injury). / Sicherheitsabstände gegen das Erreichen von Gefahrenstellen mit den oberen Gliedmaßen. / Maskinsäkerhet-

Skyddsavstånd för att hindra att man når riskområden med händer och armar.

- EN 349 Sicurezza del macchinario - Spazi minimi per evitare lo schiacciamento di parti del corpo umano. / Espaces minimum pour éviter

l'écrasement de parties du corps. / Safety of machinery - Minimun gaps avoid crushing of parts of the human boyd / Mindestabstände

zur Vermeidung des Quetschens von Körpersteilen. / Maskinsäkerhet-Minimiutrymme för att undvika att kroppsdelar krossas.

- EN 378-2 Dispositivi in pressione - Impianti di refrigerazione e pompe di calore: requisiti di sicurezza e ambientali - Parte 2: progettazione,

costruzione, collaudo, installazione, marcatura e documentazione / Systèmes de réfrigération et pompes à chaleur - prescriptions en

matière de sécurité et d'environement 2e partie: conception, construction, test, installation, marquage et documentation /

Refrigeration systems and heat pumps - Safety and environmental requirtements - Part 2: design, costruction, test, instation, marking

and documentation / Kältemaschinen und Wärmepumpen - Sicherheits und Umweltbestimmungen - Teil 2: Design, Konstruktion,

Abnahmeprüfungen, Installation, Kennzeichnung und technische Uterlagen / Kylsystem och värmepumpar - säkerhets och miljökrav -

Del 2: design, konstruktion, provning, installation, märkning och dokumentation.

12/1997

2001

2005

1993

1994

2002

Via dell'Industria, 5

35020 Brugine PD Italy

Tel. 0039 049 9731022

Fax 0039 049 5806928

M006 Rev. 00 - 25/07/06

V.le Monza,261 - 20126 MILANO

Moduli di valutazione di conformità alla direttiva 97/23 utilizzati per i componenti

Formulaires de évaluation de conformité avec la directive 97/23 CEE utilisés pour les composantes

Procedures in compliance with 97/23 CEE directive to be used for the components

Konformitätprozedur nach der Richtlinie 97/23 CEE für die bauteile

Metod i överrenstämmande med 97/23 CEE standard som används för komponenter

Componente / Composant / Component / Bauteil / Komponent Modulo/Proced./Proced./Prozed./Metod

Compressore / Compresseur / Compressor / Verdichter / Kompressor D1

Evaporatore / Evaporateur / Evaporator / Verdampfer / Förångare B+D / NA**

Condensatore / Condenseur / Condenser / Verflüssiger / Kondensor B+D / NA**

Ricevitore* / Réservoir de liquide* / Liquid receiver* / Flüssigkeitssammler* / Reciver* B+D / NA**

Separatore* / Separateur de liquide* / Liquid separator* / Abscheider* / Vätskeavskiljar A1

Valvola sicurezza* / Vanne securitè* / Safety valve* / Sicherheitsventil* / Säkerhetsventi B+D

Pressostati di sicurez./ Pressostats / Safety pressure switch / Druckschalter / Pressosta B+D

* se presente / si present / if presents / wenn vorhanden / om sådan finns monterd

** se batteria alettata / si batterie à ailettes / if finned coil / bei beripptem register / vid lamellbatteri

Certificato n°/ Cerificat n°/ Certificate n°/ Zertifikate N°/ Certifikat n°: CE-1370-PED-A1-HID001-07-ITA

Si dichiara, sotto la nostra responsabilità, che le forniture sopra indicate sono conformi in ogni parte

alle direttive CEE di cui al punto (1). Le forniture sono state prodotte, collaudate e verificate con

riferimento alle normative di cui al punto (2).

Nous declarons sous notre responsabilité que les fournitures susmentionnées se conforment

totalement aux diréctives CEE comme declaré dans le point (1). Les fournitures ont été fabriquées,

testées et controlées faisont référence aux normes susmentionnées au point (2).

We declare under our responsibility that the a.m. supplies are fully in conformity with the EEC

regulations stated in the point (1). The equipment(s) have been manufactured, tested and checked

following the standards stated in the point (2).

Wir bestätigen auf unsere Verantwortung, daß die oben angeführten Lieferungen den im Punkt (1)

berichteten CEE Rechtsvorschriften voll entsprechen. Die Geräte wurden in Bezug auf die im Punkt (2)

berichteten Vorschriften erzeugt und geprüft.

Vi försäkrar härmed att ovan nämnda produkter överensstämmer helt och hållet med de EEC-direktiv

som anges i (1). Produkterna är tillverkade, testade och kontrollerade enligt de normer som anges i (2).

- Il Legale Rappresentante - Le P.D.G. - The Managing Director - Unser offizieller Vertreter - Vd :

Vittorio Pozza

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

INDEX

Declaration of conformity page3

Aim and contents of this manual page 6

How to keep this manual page 6

Graphic symbols page 6

Safety laws page 7

General safety guidelines page 7

Workers’ health and safety page 8

Protective equipment page 8

Safety signs page 8

Technical characteristics page 9

Other versions page 10

Accessories page 10

Technical data page 11

Heating capacity and compressors input power page 12

Domestic hot water production page 14

Cooling capacity and compressors input power page 15

User heat exchanger water pressure drops page 16

Domestic hot water heat exchanger water pressure drops page 17

User circuit water pumps available static pressure page 18

Operation limits page 19

Corrections tables page 20

Sound Data page 20

Safety Device Setting page 21

Electric data page 21

Inspection page 21

Lifting and handling page 21

Location and minimum technical clearances page 22

Installation of the hoods page 23

Hydraulic connections page 24

Refrigerant circuit layout page 27

Electrical connections page 29

Start up page 29

Controls during operation page 30

Maintenance and periodic checks page 30

Refrigerant circuit repair page 31

Environment protection page 31

Unit out of service page 31

Fault finding page 31

Dimensions page 33

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

The LZT manual, contains any information that is needed for a correct use of the equipment while safeguarding operator safety,

according to what indicated from “Council Directive” 98/37/CE and following changes.

AIM AND CONTENTS OF THIS MANUAL

This manual provides basic information on the installation, operation and maintenance off the LZT unit. It is addressed to machine

operators and it enables them to use the equipment efficiently, even if they do not have any previous specific knowledge of it.

This manual describes the characteristics of the equipment at the time it is being put on the market; therefore it may not capture later

technological improvements introduced by HIDROS SRL as part of its constant endeavour to enhance the performance, ergonomics,

safety and functionality of its products.

HOW TO KEEP THIS MANUAL

The manual must be always with the unit it refers to. It must be stored in a safe place, away from the dust and moisture. It must be

accessible to all users who shall consult it any time they are in doubt on how to operate the equipment.

HIDROS SRL reserves the right to modify its products and related manuals without necessarily updating previous versions of the

reference material. The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an

attachment to this manual.

HIDROS SRL is available to give any detailed information about this manual and to give information regarding the use and the

maintenance of its own units.

GRAPHIC SYMBLS

Indicates operations that can be dangerous for people and/or disrupts the correct operation of the

equipment..

Indicates prohibited operations.

Indicates important information that the operator must follow in order to guarantee the correct operation

of the equipment in complete safety

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

SAFETY LAWS

HIDROS SRL’s equipment and their component parts have been designed in compliance with the harmonised EC norms in force

and other European and national norms as required by the Council Directive (98/37 and later amendments).

The equipment i salso compliant with:

• Norms EN 292-1 e 292-2

• Norma EN 294

• Norms EN 378-1, 378-2, 378-3 e 378-4

• Norma EN 418

• Norma EN 953

• Norma EN 1050

• Norma EN 60204-1

• Norma EN 61000-6-2

• Norma EN 61000-6-4

• Community Directives 98/37/CE, 97/23/CE, 93/68/CEE, 89/336/CEE 73/23/CEE

GENERAL SAFETY GUIDELINES

Before beginning to operate on LZT units every user must be perfectly knowledgeable about the functions of the equipment and its

controls and must have read and understood the information container in this manual.

It’s strictly forbidden to remove and/or camper with any safety device.

Any routine or not-routine maintenance operation shall be carried out when the equipment has been shut

down, disconnected from electric and pneumatic power source and after its pneumatic system has been

discharged.

Do not put your hands or insert screwdrivers, spanners or other tools into moving parts of the equipment.

The equipment supervisor and the maintenance man must receive training suitable for the performance of

their tasks in safety

Operators must know how to use personal protective devices and must know the accident-prevention

guidelines contained in national and international laws and norms.

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

WORKERS’ HEALTH AND SAFETY

The European Community has adopted a number of directives on workplace health and safety, which include directives 89/391/CEE,

89/686/CEE, 89/655/CEE, 86/188/CEE and 77/576/CEE. Every employer shall implement such provisions and ensure that workers

respect them:

Do not tamper with or replace parts of the equipment without the specific consent of the manufacturer.

The manufacturer shall have no responsibility whatsoever in case of unauthorised operations.

Using components, expendable materials or spare parts that do not correspond to those recommended

by the manufacturer and/or listed in this manual may be dangerous for the operators and/or damage the

equipment

The operator’s workplace must be kept clean, tidy and free from objects that may camper free

movements. Appropriate lighting of the work place shall be provided so as to allow the operator to carry

out the required operations safely. Poor or too strong lighting can cause risks.

Ensure that work places are always adequately ventilated and that aspirators are working, in good

condition and in compliance with the requirements of the laws in force..

PERSONAL PROTECTIVE EQUIPMENT

When operating and maintaining the LZT unit, use the following personal protective equipment.

Protective clothing: Maintenance men and operators must wear protective clothing that complies with the

basic safety requirements currently in force. In case of slippery floors users must wear safety shoes with

non-slip soles.

Gloves: During maintenance or cleaning operation protection gloves must be used

Mask and googles: Respiratory protection (mask) and eye protection (goggles) should be

used during cleaning and maintenance operations.

SAFETY SIGNS

The equipment features the following safety signs, which must be complied with:

General hazard

Electric shock hazard

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

TECHNICAL CHARACTERISTICS

The high efficiency LZT heat pump series have been especially designed for application with radiant floor heating systems or in

those applications where it is necessary to have the highest maximum efficiency in heating mode. The units have been optimized for

heating mode, they are able to produce water up to 60°C and they can operate down to -15°C ambient temperature. All models are

supplied standard with reverse cycle valve for cold water production.

Frame

All LZT units are made from hot-galvanised thick sheet metal, painted with polyurethane powder enamel at 180°C to ensure the best

resistance against the atmospheric agents. The frame is self-supporting with removable panels. All screws and rivets for outdoor

installations are in stainless steel. The colour of the units is RAL 7035.

Refrigerant circuit

The refrigerant gas used in these units is R407C. The refrigerant circuit is made by using international primary brands components

and according to ISO 97/23 concerning welding procedures. The refrigerant circuit includes:

sight glass, filter drier, double thermal expansion valves (one for cooling mode, one for heating mode) with external equalizer, 4 way

reverse cycle valve, one way valves, liquid receiver, Schrader valves for maintenance and control, pressure safety device (according

to PED regulation). Models starting from 09T are also supplied with an AISI316 stainless steel heat exchanger used as economizer

and additional expansion valve for refrigerant vapour injection.

Compressors

The compressors used are high performance scroll type, supplied with a special scroll design who enhance the efficiency of the

refrigerant cycle at low ambient conditions. Units starting from model 09T, are also supplied with an additional heat exchanger used

as economizer and a vapour injection system, used to enlarge the working range. The compressors are all supplied with crankcase

heater and thermal overload protection by a klixon embedded in the motor winding. They are mounted in a separate chamber in

order to be separated from the air stream. The crankcase heater is always powered when the compressor is in stand-by. The

inspection is possible through the frontal panel of the unit that allow the maintenance of the compressors even if the unit is working.

Source heat exchanger

The source heat exchangers are made of copper pipes and aluminium fins. The diameter of the copper pipes is 3/8” and the

thickness of the aluminium fins is 0,1 mm. The tubes are mechanically expanded into the aluminium fins to improve the heat

exchange factor. The geometry of these condensers guarantee a low air side pressure drop and then the use of low rotation (and low

noise emission) fans. The source heat exchangers can be protected by a metallic filter to be installed on request.

Fans

The fans are axial type with aluminium aerofoil blades. They are statically and dynamically balanced and supplied complete of the

safety fan guard according to EN 60335. They are mounted on the unit frame by interposition of rubber vibration dampers. The

electric motors are all at 6 poles (about 900 rpm). The motors are directly driven with an integrated thermal overload protection. The

protection class of the motors is IP 54.

User heat exchangers

The user heat exchangers are made of AISI 316 stainless steel braze-welded plates type. The use of these kind of heat exchangers

allows a massive reduction of the refrigerant charge of the unit compared to the traditional shell-in-tube evaporators and also a

reduction of the overall dimensions of the unit. The user heat exchangers are factory insulated with flexible close cell material and

can be equipped with antifreeze heater (optional). Each heat exchanger is provided with a temperature sensor as antifreeze

protection.

Electric box

The electric box is made according to electromagnetic compatibility norms CEE 73/23 and 89/336. The accessibility to the board is

possible after removing the front panel of the unit. The protection degree is IP55. In all LZT units are installed, standard, the

compressors sequence relay who disable the operation of the compressor in case the power supply phase sequence is not the

correct one (scroll compressors in fact, can be damaged if they rotate reverse wise). The following components are also standard

installed: main switch, magnetic-thermal switches (as a protection of pumps and fans), compressors fuses, control circuit automatic

breakers, compressor contactors, fan contactors, pump contactors. The terminal board is supplied with voltage free contacts for

remote ON-OFF , winter/summer change over and general alarm.

Microprocessors

All LZT units are supplied standard with microprocessor controls. The microprocessor controls the following functions: regulation of

the water temperature, antifreeze protection, compressor timing, compressor automatic starting sequence, alarm reset. The control

panel is supplied with display showing all operational icons. The microprocessor is set for automatic defrost (in case of operation in

severe ambient conditions) and for summer/winter/domestic hot water change over (SW6 versions only). Upon request any

microprocessor can be connected to a BMS system for the remote control and management. The technical department is available

to study, together with the customer, different solutions using MODBUS; LONWORKS; BACNET or TREND protocols.

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

Control and protection devices

All units are supplied with the following control and protection devices: Return user water temperature sensor, antifreeze protection

sensor installed on the user outlet water temperature, return and supply domestic hot water sensors (SW6 versions only), high

pressure switch with manual reset, low pressure switch with automatic reset, high pressure safety valve, compressor thermal

overload protection, fans thermal overload protection, pressure transducer (used to optimize the defrost cycle and the fan speed

depending on the ambient conditions), flow switch.

OTHER VERSIONS

LZT/SW6 UNIT WITH DOMESTIC HOT WATER PRODUCTION

This version is suitable to produce domestic hot water: the unit is supplied with an additional heat exchanger used as condenser for

the domestic hot water that, is independently from the operation mode of the unit. The activation of the additional heat exchanger is

done automatically by the microprocessor control when the domestic hot water temperature measured by the sensor is lower than

the required set point. This unit allow the production of cold and hot water at the same time independently. This version is supplied

with return/supplied domestic hot water sensors and advanced control panel with specific software able to manage the operation

priorities.

LZT / A1 HIGH EFFICIENCY HEAT PUMP WITH INTEGRATED HYDRAULIC KIT

The LZT heat pumps can be delivered as option, with a built in hydraulic kit that includes:

Water tank in different sizes (depending on the size of the unit), factory insulated with flexible close cell material and prepared for

the installation of antifreeze kit (option). The water tank is installed on the hot water outlet water side to minimize the inevitable

fluctuations in the water temperature due to the compressors starts and stops. The installation of the water tank on the hot water

outlet water side keeps constant, for a period of time, the user water temperature when the compressors are Off, while this can not

be obtained if the water tank is installed on the hot water inlet water side.

Water pump, centrifugal type, suitable for chilled water operation. The pump is directly controlled by the microprocessor that

controls its correct operation. In the hydraulic circuit are also present the expansion vessel, the safety valve and the eventual manual

valves with fittings.

LZT/LS LOW NOISE VERSION

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.

ACCESSORIES

SOUND ATTENUATION HOODS (mod. 05,07,09,09T,13,20 only) These devices are installed on the units to minimize the sound

level; they are made from hot-galvanised thick sheet metal, painted with polyurethane powder enamel at 180°C to ensure the best

resistance against the atmospheric agents. The hoods are internally insulated with PU foam material, with the interposition of high

density non toxic bitumen-free barrier. They are mounted on the unit by stainless steel screws.

REMOTE CONTROL PANEL It allows the remote control of all parameters of the unit.

RUBBER VIBRATION DAMPERS To be installed beneath the unit base and the ground to avoid the transmission of vibrations (and

the noise) to the building.

EVAPORATOR ANTIFREEZE HEATER It is made by a “self-heating” electric cable mounted around the evaporator in order to avoid

dangerous freezing of the water inside it. It is controlled by the microprocessor. It can be used in the units without hydraulic kit

ANTIFREEZE KIT It is made by a “self-heating” electric cable mounted around the evaporator and the water pipes plus an armoured

electric heater fitted inside the water tank. This device is controlled by the microprocessor and it is used in the version A1 with

integrated hydraulic kit..

INTEGRATION ELECTRIC HEATER To be installed in the water tank can be used to integrate the water in case the heat pump

can not reach the set point due to very critical ambient conditions. The device can be installed in the water tank (A1 versions only) to

integrate the user hot water temperature, or supplied separately to integrate the domestic hot water temperature circuit.

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

TECHNICAL DATA

Mod. 05 07 09 09T 13 20 25 30 40

Refrigerant kW R407C R407C R407C R407C R407C R407C R407C R407C R407C

Heating capacity (1) kW 5,5 7,8 9,5 8,9 13,2 19,0 22,2 26,5 37,9

Heating capacity (2) kW 5,2 7,2 8,9 8,8 13,4 18,6 22,1 26,8 37,2

Heating capacity (3) kW 4,5 6,2 7,6 7,6 11,8 16,5 19,5 23,7 33,1

Compressors input power(1) kW 1,5 1,9 2,3 2,2 3,0 4,4 5,2 6,0 8,8

Domestic hot water capacity (4) kW 4,5 6,2 7,6 7,6 11,8 16,5 19,5 23,7 33,1

Compressors input power(4) kW 1,8 2,4 2,9 2,7 3,9 5,6 6,7 7,8 11,3

Cooling capacity (5) kW 4,7 6,7 8,4 7,7 11,9 16,6 19,6 23,8 33,2

Compressors input power(5) kW 1,8 2,2 2,7 2,7 3,6 5,3 6,3 7,2 10,5

Total input current A 8,6 10,4 14,3 5,6 7,7 12,4 13,4 14,8 22,6

Maximum input current A 15,8 19,8 24,8 7,3 12,0 16,8 19,4 23,4 31,4

Maximum peak current A 59,3 77,3 98,3 41,3 66,0 103,8 73,4 77,4 118,4

Power supply 230/1/50 400/3+N/50

Airflow m3/h 3000 3000 3000 3000 5000 8000 10800 10800 10800

Fans n° x kW 1x 0,28 1x 0,28 1x 0,28 1x 0,28 2 x 0,2 2 x 0,31 2 x 0,37 2 x 0,37 2 x 0,37

Scroll Scroll with economizer and vapour injection

Compressor

type n° 1 1 1 1 1 1 2 2 2

Refrigerant circuit n° 1 1 1 1 1 1 1 1 1

Sound power level (6) dB(A) 68 68 68 68 70 74 79 79 79

Sound pressure level (7) dB(A) 40 40 40 40 42 46 51 51 51

Water pump (option) kW 0,25 0,25 0,25 0,25 0,37 0,37 0,55 0,55 0,55

Water tank capacity (option) lt. 40 40 40 40 50 60 180 180 180

Expansion vessel (option) lt. 2 2 2 2 2 2 5 5 5

Integration electric heater (option) kW 3 3 3 3 6 6 9 9 9

Length mm 1103 1103 1103 1103 1203 1453 1870 1870 1870

Width mm 380 380 380 380 423 473 850 850 850

Height mm 989 989 989 989 1323 1423 1406 1406 1406

Weight (Basic version) Kg 95 104 118 125 133 188 350 390 420

Weight (Hydraulic kit version) Kg 148 163 179 184 212 267 510 550 580

Working conditions

(1) Heating: Ambient temp. 7°C, Water 35/30°C.

(2) Heating: Ambient temp. 7°C, Water 50/45°C.

(3) Heating: Ambient temp. 2°C, Water 50/45°C.

(4) Domestic hot water capacity: Ambient temp. 2°C, Water 50/45°C.

(5) Cooling: Ambient temp. 35°C, Water 12/7°C,

(6) Sound power level according to ISO 3746.

(7) Sound pressure level measured at 10 mt from the unit in free field conditions direction factor Q=2 according to ISO 3746.

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

HEATING CAPACITY AND COMPRESSORS INPUT POWER

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 2,5 2,5 1,2 1,3 2,1 1,9

-10 3,1 3,0 1,3 1,4 2,4 2,2

-7 3,4 3,4 3,4 1,3 1,4 1,5 2,7 2,4 2,2

-5 3,7 3,6 3,6 1,3 1,4 1,6 2,8 2,5 2,3

-2 4,1 4,0 4,0 4,0 1,3 1,5 1,6 1,8 3,0 2,7 2,5 2,3

0 4,4 4,3 4,2 4,2 4,2 1,4 1,5 1,6 1,8 2,0 3,2 2,9 2,6 2,3 2,1

2 4,7 4,6 4,5 4,5 4,5 1,4 1,5 1,7 1,8 2,0 3,4 3,0 2,7 2,5 2,2

5 5,2 5,1 5,0 4,9 4,9 1,4 1,6 1,7 1,9 2,1 3,6 3,2 2,9 2,6 2,4

7 5,5 5,4 5,3 5,2 5,2 1,5 1,6 1,7 1,9 2,1 3,8 3,4 3,0 2,7 2,5

10 6,1 6,0 5,8 5,7 5,7 1,5 1,6 1,8 2,0 2,2 4,0 3,6 3,2 2,9 2,6

LZT 05

15 7,2 7,0 6,8 6,7 6,6 1,6 1,7 1,9 2,1 2,3 4,5 4,0 3,6 3,2 2,9

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 3,6 3,5 1,6 1,7 2,3 2,0

-10 4,4 4,3 1,7 1,8 2,6 2,3

-7 4,8 4,7 4,7 1,7 1,9 2,0 2,9 2,6 2,3

-5 5,2 5,1 5,0 1,7 1,9 2,1 3,0 2,7 2,4

-2 5,8 5,6 5,5 5,4 1,8 1,9 2,1 2,3 3,3 2,9 2,6 2,3

0 6,2 6,0 5,9 5,8 5,6 1,8 2,0 2,2 2,4 2,6 3,5 3,1 2,7 2,5 2,2

2 6,6 6,4 6,3 6,2 6,0 1,8 2,0 2,2 2,4 2,6 3,6 3,2 2,9 2,6 2,3

5 7,3 7,1 6,9 6,8 6,6 1,9 2,0 2,2 2,4 2,7 3,9 3,5 3,1 2,8 2,5

7 7,8 7,6 7,4 7,2 7,0 1,9 2,1 2,3 2,5 2,7 4,1 3,7 3,3 2,9 2,6

10 8,6 8,3 8,1 7,9 7,6 1,9 2,1 2,3 2,5 2,8 4,4 3,9 3,5 3,1 2,8

LZT 07

15 10,1 9,8 9,5 9,2 8,8 2,0 2,2 2,4 2,7 2,9 5,0 4,4 3,9 3,5 3,1

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 4,3 4,3 1,8 2,0 2,4 2,2

-10 5,2 5,2 1,9 2,1 2,7 2,5

-7 5,8 5,7 5,7 2,0 2,2 2,4 2,9 2,6 2,4

-5 6,2 6,2 6,1 2,0 2,2 2,4 3,1 2,8 2,5

-2 6,9 6,8 6,7 6,7 2,1 2,3 2,5 2,8 3,3 3,0 2,7 2,4

0 7,5 7,3 7,2 7,1 7,0 2,1 2,3 2,6 2,8 3,1 3,5 3,1 2,8 2,5 2,3

2 8,0 7,8 7,7 7,6 7,5 2,2 2,4 2,6 2,9 3,1 3,7 3,3 2,9 2,6 2,4

5 8,9 8,7 8,5 8,3 8,2 2,2 2,4 2,7 3,0 3,2 4,0 3,6 3,2 2,8 2,5

7 9,5 9,3 9,1 8,9 8,7 2,3 2,5 2,7 3,0 3,3 4,2 3,7 3,3 3,0 2,6

10 10,6 10,3 10,0 9,7 9,5 2,3 2,5 2,8 3,1 3,4 4,6 4,0 3,6 3,2 2,8

LZT 09

15 12,5 12,2 11,8 11,4 11,1 2,4 2,7 2,9 3,2 3,5 5,1 4,6 4,0 3,6 3,1

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 4,4 4,6 4,8 5,0 … … 1,7 1,9 2,2 2,5 … … 2,6 2,4 2,2 2,0 … …

-10 5,2 5,3 5,4 5,6 5,8 … 1,8 2,0 2,2 2,5 2,9 … 2,9 2,7 2,4 2,2 2,0 …

-7 5,8 5,8 5,9 6,0 6,1 6,3 1,8 2,0 2,3 2,5 2,9 3,3 3,1 2,9 2,6 2,4 2,1 1,9

-5 6,2 6,2 6,2 6,3 6,4 6,6 1,9 2,1 2,3 2,6 2,9 3,3 3,3 3,0 2,7 2,5 2,2 2,0

-2 6,8 6,8 6,8 6,9 6,9 7,0 1,9 2,1 2,4 2,6 3,0 3,4 3,5 3,2 2,9 2,6 2,3 2,1

0 7,2 7,2 7,2 7,2 7,3 7,3 2,0 2,2 2,4 2,7 3,0 3,4 3,6 3,3 3,0 2,7 2,4 2,2

2 7,7 7,6 7,6 7,6 7,7 7,7 2,0 2,2 2,5 2,7 3,1 3,4 3,8 3,4 3,1 2,8 2,5 2,2

5 8,4 8,3 8,3 8,3 8,3 8,3 2,1 2,3 2,5 2,8 3,1 3,5 4,0 3,6 3,3 3,0 2,6 2,4

7 8,9 8,8 8,8 8,8 8,7 8,7 2,2 2,4 2,6 2,9 3,2 3,6 4,1 3,7 3,4 3,1 2,7 2,4

10 9,7 9,6 9,6 9,5 9,4 9,4 2,2 2,4 2,7 3,0 3,3 3,7 4,3 3,9 3,6 3,2 2,9 2,6

LZT 09T

15 11,1 11,0 10,9 10,8 10,8 … 2,4 2,6 2,8 3,1 3,4 … 4,7 4,2 3,8 3,5 3,1 …

TWUC: User Outlet water temperature (°C) TAMB: Ambient temperature dry bulb (°C)

PA: Compressors input power (Kw) PH: Heating capacity (Kw)

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

HEATING CAPACITY AND COMPRESSORS INPUT POWER

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 7,1 7,3 7,6 8,0 … … 2,7 3,0 3,3 3,7 … … 2,6 2,5 2,3 2,2 … …

-10 8,2 8,4 8,6 8,9 9,2 … 2,8 3,0 3,4 3,7 4,2 … 2,9 2,8 2,6 2,4 2,2 …

-7 8,9 9,1 9,3 9,5 9,8 10,1 2,8 3,1 3,4 3,8 4,2 4,8 3,2 2,9 2,7 2,5 2,3 2,1

-5 9,4 9,6 9,8 10,0 10,2 10,5 2,9 3,1 3,4 3,8 4,3 4,8 3,3 3,1 2,9 2,6 2,4 2,2

-2 10,3 10,4 10,6 10,7 10,9 11,2 2,9 3,2 3,5 3,9 4,3 4,9 3,6 3,3 3,0 2,8 2,5 2,3

0 10,9 11,0 11,1 11,3 11,4 11,6 2,9 3,2 3,5 3,9 4,3 4,9 3,7 3,4 3,2 2,9 2,6 2,4

2 11,5 11,6 11,7 11,8 12,0 12,2 2,9 3,2 3,5 3,9 4,4 4,9 3,9 3,6 3,3 3,0 2,7 2,5

5 12,5 12,6 12,7 12,8 12,9 13,0 3,0 3,3 3,6 4,0 4,4 5,0 4,2 3,8 3,5 3,2 2,9 2,6

7 13,2 13,3 13,3 13,4 13,5 13,6 3,0 3,3 3,6 4,0 4,5 5,0 4,4 4,0 3,7 3,3 3,0 2,7

10 14,4 14,4 14,4 14,4 14,4 14,5 3,1 3,4 3,7 4,1 4,5 5,0 4,7 4,3 3,9 3,5 3,2 2,9

LZT 13

15 16,4 16,3 16,3 16,2 16,2 … 3,1 3,4 3,8 4,2 4,6 … 5,2 4,8 4,3 3,9 3,5 …

PH kW

)

(

)

COP

TWUC

(

°C

)

TWUC

(

°C

)

W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 10,1 10,3 10,5 10,7 … … 3,8 4,1 4,6 5,1 … … 2,7 2,5 2,3 2,1 … …

-10 11,8 12,0 12,1 12,3 12,5 … 3,9 4,3 4,7 5,2 5,8 … 3,0 2,8 2,6 2,4 2,1 …

-7 12,9 13,1 13,2 13,3 13,4 13,5 4,0 4,4 4,8 5,3 5,9 6,7 3,2 3,0 2,7 2,5 2,3 2,0

-5 13,7 13,8 13,9 14,0 14,0 14,1 4,1 4,4 4,9 5,4 6,0 6,7 3,4 3,1 2,8 2,6 2,3 2,1

-2 14,9 14,9 15,0 15,0 15,0 15,1 4,1 4,5 5,0 5,5 6,1 6,9 3,6 3,3 3,0 2,7 2,5 2,2

0 15,7 15,8 15,8 15,8 15,7 15,7 4,2 4,6 5,0 5,6 6,2 6,9 3,8 3,4 3,1 2,8 2,5 2,3

2 16,6 16,6 16,6 16,5 16,5 16,4 4,2 4,6 5,1 5,6 6,3 7,0 3,9 3,6 3,3 2,9 2,6 2,3

5 18,0 17,9 17,9 17,8 17,6 17,5 4,3 4,7 5,2 5,7 6,4 7,1 4,2 3,8 3,4 3,1 2,8 2,5

7 19,0 18,9 18,8 18,6 18,4 18,2 4,4 4,8 5,3 5,8 6,4 7,2 4,3 3,9 3,6 3,2 2,9 2,5

10 20,5 20,4 20,2 20,0 19,8 19,5 4,5 4,9 5,4 5,9 6,5 7,3 4,6 4,2 3,8 3,4 3,0 2,7

LZT 20

15 23,4 23,2 22,9 22,6 22,2 … 4,6 5,1 5,5 6,1 6,7 … 5,1 4,6 4,1 3,7 3,3 …

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 11,5 11,9 12,4 13,0 … … 4,4 4,9 5,4 6,1 … … 2,6 2,4 2,3 2,1 … …

-10 13,4 13,7 14,0 14,5 15,0 … 4,6 5,0 5,6 6,2 7,1 … 2,9 2,7 2,5 2,3 2,1 …

-7 14,7 14,9 15,2 15,5 15,9 16,4 4,7 5,1 5,7 6,3 7,1 8,1 3,1 2,9 2,7 2,5 2,2 2,0

-5 15,6 15,8 16,0 16,3 16,7 17,1 4,7 5,2 5,7 6,4 7,2 8,1 3,3 3,0 2,8 2,6 2,3 2,1

-2 17,1 17,2 17,4 17,6 17,9 18,2 4,8 5,3 5,8 6,5 7,3 8,2 3,5 3,2 3,0 2,7 2,5 2,2

0 18,1 18,2 18,3 18,5 18,7 19,0 4,9 5,4 5,9 6,6 7,3 8,3 3,7 3,4 3,1 2,8 2,5 2,3

2 19,2 19,3 19,4 19,5 19,7 19,8 5,0 5,5 6,0 6,7 7,4 8,4 3,8 3,5 3,2 2,9 2,6 2,4

5 21,0 20,9 21,0 21,0 21,1 21,3 5,1 5,6 6,1 6,8 7,6 8,5 4,1 3,8 3,4 3,1 2,8 2,5

7 22,2 22,1 22,1 22,1 22,2 22,3 5,2 5,7 6,2 6,9 7,6 8,6 4,3 3,9 3,6 3,2 2,9 2,6

10 24,1 24,0 23,9 23,9 23,9 23,9 5,3 5,8 6,4 7,0 7,8 8,7 4,5 4,1 3,8 3,4 3,1 2,7

LZT 25

15 27,5 27,3 27,2 27,1 27,0 … 5,5 6,0 6,6 7,3 8,1 … 5,0 4,5 4,1 3,7 3,3 …

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 14,2 14,7 15,3 16,0 … … 5,4 5,9 6,6 7,3 … … 2,6 2,5 2,3 2,2 … …

-10 16,3 16,8 17,2 17,8 18,4 … 5,6 6,1 6,7 7,5 8,4 … 2,9 2,8 2,6 2,4 2,2 …

-7 17,8 18,2 18,6 19,1 19,6 20,2 5,6 6,2 6,8 7,6 8,5 9,6 3,2 2,9 2,7 2,5 2,3 2,1

-5 18,9 19,2 19,6 20,0 20,5 21,0 5,7 6,2 6,9 7,6 8,5 9,6 3,3 3,1 2,9 2,6 2,4 2,2

-2 20,6 20,8 21,1 21,5 21,9 22,3 5,8 6,3 7,0 7,7 8,6 9,7 3,6 3,3 3,0 2,8 2,5 2,3

0 21,8 22,0 22,3 22,6 22,9 23,3 5,8 6,4 7,0 7,8 8,7 9,8 3,7 3,4 3,2 2,9 2,6 2,4

2 23,1 23,2 23,4 23,7 24,0 24,3 5,9 6,5 7,1 7,8 8,7 9,8 3,9 3,6 3,3 3,0 2,7 2,5

5 25,1 25,2 25,3 25,5 25,7 26,0 6,0 6,5 7,2 8,0 8,9 9,9 4,2 3,8 3,5 3,2 2,9 2,6

7 26,5 26,6 26,7 26,8 26,9 27,1 6,0 6,6 7,3 8,0 8,9 10,0 4,4 4,0 3,7 3,3 3,0 2,7

10 28,7 28,7 28,8 28,8 28,9 29,0 6,1 6,7 7,4 8,1 9,0 10,1 4,7 4,3 3,9 3,5 3,2 2,9

LZT 30

15 32,7 32,6 32,6 32,5 32,4 … 6,2 6,9 7,6 8,3 9,2 … 5,2 4,8 4,3 3,9 3,5 …

TWUC: User Outlet water temperature (°C) TAMB: Ambient temperature dry bulb (°C)

PA: Compressors input power (Kw) PH: Heating capacity (Kw)

LZT High efficiency air to water heat pumps

MTLZTGB REV.012008

HEATING CAPACITY AND COMPRESSORS INPUT POWER

PH kW) PA (kW) COP

TWUC (°C) TWUC (°C) W/W

Mod. TAMB

(°C) 35 40 45 50 55 60 35 40 45 50 55 60 35 40 45 50 55 60

-15 20,2 20,6 21,0 21,5 … … 7,6 8,3 9,1 10,1 … … 2,7 2,5 2,3 2,1 … …

-10 23,7 24,0 24,3 24,6 25,0 … 7,8 8,6 9,4 10,5 11,7 … 3,0 2,8 2,6 2,4 2,1 …

-7 25,9 26,1 26,3 26,6 26,8 27,1 8,0 8,7 9,6 10,7 11,9 13,4 3,2 3,0 2,7 2,5 2,3 2,0

-5 27,4 27,6 27,7 27,9 28,1 28,3 8,1 8,9 9,7 10,8 12,0 13,5 3,4 3,1 2,8 2,6 2,3 2,1

-2 29,8 29,9 30,0 30,0 30,1 30,1 8,3 9,0 9,9 11,0 12,2 13,7 3,6 3,3 3,0 2,7 2,5 2,2

0 31,5 31,5 31,5 31,5 31,5 31,4 8,4 9,2 10,1 11,1 12,4 13,8 3,8 3,4 3,1 2,8 2,5 2,3

2 33,2 33,2 33,1 33,1 32,9 32,8 8,5 9,3 10,2 11,3 12,5 14,0 3,9 3,6 3,3 2,9 2,6 2,3

5 36,0 35,9 35,7 35,5 35,3 35,0 8,7 9,5 10,4 11,5 12,7 14,2 4,2 3,8 3,4 3,1 2,8 2,5

7 37,9 37,8 37,5 37,2 36,9 36,5 8,8 9,6 10,5 11,6 12,9 14,3 4,3 3,9 3,6 3,2 2,9 2,5

10 41,1 40,8 40,4 40,0 39,5 39,0 9,0 9,8 10,7 11,8 13,1 14,6 4,6 4,2 3,8 3,4 3,0 2,7

LZT 40

15 46,8 46,3 45,8 45,1 44,3 … 9,3 10,1 11,1 12,2 13,4 … 5,1 4,6 4,1 3,7 3,3 …

TWUC: User Outlet water temperature (°C) TAMB: Ambient temperature dry bulb (°C)

PA: Compressors input power (Kw) PH: Heating capacity (Kw)

DOMESTIC HOT WATER PRODUCTION (SW6 VERSIONS ONLY)

The maximum domestic hot water capacity and its temperature can be calculated in the table at pages 12,13,14 depending on the

ambient and the user water outlet conditions. The table below shows the capacity of the model LZT13/SW6.