MAXA ADVANTIX MP Series User manual

AIR CONDITIONING
A96
USER'S-INSTALLER'S MANUAL
Serie/Series/Serie/Série Emissione/Edition/Au-
sgabeIssue
i-SHWAK V4 06 ÷ 16(T) 10-2017
Catalogo/Catalogue/Katalog/Brochure Sostituisce/Superseedes
Ersetzt/Remplace
MUI01110H7920-0102 2017
INVERTER AIR/WATER CHILLERS AND HEAT PUMPS
WITH WALL-MOUNTED INDOOR UNIT AND REMOTE
CONDENSING OUTDOOR UNIT
Indoor units
model MP
Indoor units
model MPR
Outdoor units
i-SHWAK V4

01
10-17
AL.B
P.F.
Updating the technical data and adding the new model “i-SHWAK V4 16”
00
02-2017
AL.B.
A.B.
Rev
Date
Author
Supervisor
Notes
Catalogo / Catalogue / Katalog / Catalogue
MUI01110H7920-01
Serie / Series / Serie / Serie / Série
INVERTER AIR/WATER CHILLERS AND HEAT PUMPS
WITH WALL-MOUNTED INDOOR UNIT AND REMOTE CONDENSING OUTDOOR UNIT
Possible wasted electrical or electronic devices/products should not be located together with normal domestic waste, but disposed according to the
current WEEE law in compliance with the European Directive 2012/19/UE. Please inform yourself at your local Administration or at your reseller in case
the product will be replaced with a similar one.

2
CE CONFORMITY DECLARATION
DICHIARAZIONE DI CONFORMITÀ CE
THE COMPANY ADVANTIX S.P.A – VIA SAN GIUSEPPE LAVORATORE, 24 – LOC. LA MACIA Z.A.I. – 37040 – ARCOLE - VERONA - ITALY
LA SOCIETÀ ADVANTIX S.P.A – VIA SAN GIUSEPPE LAVORATORE, 24 – LOC. LA MACIA Z.A.I. – 37040 – ARCOLE - VERONA - ITALY
DECLARES
DICHIARA
that the unit:
che la macchina:
Definition :
Definizione :
Air to water reversible heat pump with remote condenser unit /
Pompa di calore aria-acqua reversibile con unità condensante remota
Model N°:
N° modello:
i-SHWAK/V4 06 / 08 / 10 / 12 / 14 / 16
MP / MPR
Serie N°:
N° di serie:
MEETS THE REQUIREMENTS OF DIRECTIVE 2006/42/CE
È CONFORME AI REQUISITI DELLA DIRETTIVA 2006/42/CE
1. The unit is in CAT. I, so it’s free from the application of Directive 2014/68/UE (Reference to Art. I, paragraph 2, point f)
L’attrezzatura a pressione rientra nella CAT. I. L’unità è quindi esente dall’applicazione della normativa PED 2014/68/UE (Riferimento Art. I, paragrafo 2 punto f).
2. Harmonized standards applied to designing and manufacture : UNI EN 378-1, UNI EN378-2, UNI EN 12735-1
Norme armonizzate applicate alla progettazione ed alla costruzione : UNI EN 378-1, UNI EN378-2, UNI EN 12735-1
3. Others European Directives and harmonized standards applied to the equipment: 2014/35/UE, 2014/30/UE, 2011/65/UE, 2012/19/UE, CEI EN 60335-2-40, CEI
EN 55014-1, CEI EN 55014-2, CEI EN 61000-3-2, CEI EN 61000-3-3, CEI EN 62233
Eventuali altre Direttive Europee e norme armonizzate applicate all’attrezzatura : 2014/35/UE, 2014/30/UE, 2011/65/UE, 2012/19/UE, CEI EN 60335-2-40, CEI EN
55014-1, CEI EN 55014-2, CEI EN 61000-3-2, CEI EN 61000-3-3, CEI EN 62233
The manufacturer states, also, that the technical file is compiled and kept at ADVANTIX SpA and that the Technical Manager Paolo Ferroli is the person authorized
to compile it.
Il fabbricante inoltre dichiara che il fascicolo tecnico della macchina è costituito e custodito presso ADVANTIX SpA e che il Direttore Tecnico Paolo Ing. Ferroli è la
persona autorizzata a costituire tale fascicolo.
NOME / NAME / VORNAME / NOM / NOMBRE PAOLO
COGNOME / SURNAME / NACHNAME / PRENOM / APELLIDO FERROLI
POSIZIONE / COMPANY POSITION / POSITION / FONCTION / POSICION RESP. TECNICO
Arcole, Gennaio/January 2017

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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INDEX
1 PURPOSES AND CONTENTS OF THE MANUAL ......................................................................................................................... 5
1.1 CONSERVATION OF THE MANUAL ............................................................................................................................................ 5
1.2 GRAPHIC SYMBOLS ................................................................................................................................................................... 5
2 SAFETY LAWS .......................................................................................................................................................................... 5
3 PERMITTED USES .................................................................................................................................................................... 5
4 GENERAL SAFETY GUIDELINES ................................................................................................................................................. 6
4.1 HEALTH AND SAFETY OF WORKERS .......................................................................................................................................... 6
4.2 PERSONAL PROTECTION EQUIPMENT ...................................................................................................................................... 7
4.3 SAFETY SYMBOLS ...................................................................................................................................................................... 7
4.4 REFRIGERANT SAFETY DATA SHEET .......................................................................................................................................... 8
5 GENERAL CHARACTERISTICS ................................................................................................................................................... 9
5.1 MODELLI DISPONIBILI ............................................................................................................................................................... 9
5.2 WALL MOUNTED VERSION MODEL MP .................................................................................................................................... 9
5.3 WALL MOUTED VERSION MODEL MPR ..................................................................................................................................... 9
6 TECHNICAL CHARACTERISTICS ............................................................................................................................................... 10
6.1 FRAME .................................................................................................................................................................................... 10
6.2 REFRIGERANT CIRCUIT ............................................................................................................................................................ 10
6.3 COMPRESSORS ....................................................................................................................................................................... 10
6.4 AIR SIDE EXCHANGERS ............................................................................................................................................................ 10
6.5 FANS ....................................................................................................................................................................................... 10
6.6 USER HEAT EXCHANGERS ....................................................................................................................................................... 10
6.7 ELECTRIC BOX ......................................................................................................................................................................... 10
6.8 CONTROL SYSTEM ................................................................................................................................................................... 11
6.9 MONITORING AND PROTECTION DEVICES .............................................................................................................................. 11
6.10 HYDRAULIC CIRCUIT ................................................................................................................................................................ 11
6.11 FAN SPEED CONTROLLER ........................................................................................................................................................ 11
7 DESCRIPTION OF THE INDOOR UNIT CODE ............................................................................................................................ 12
7.1 OPTIONAL ACCESSORIES ......................................................................................................................................................... 14
8 INSTALLATION ...................................................................................................................................................................... 14
8.1 GENERALITY ............................................................................................................................................................................ 14
8.2 LIFTING AND HANDLING ......................................................................................................................................................... 15
8.2.1 Indoor unit ........................................................................................................................................................................ 15
8.2.2 Outdoor unit ..................................................................................................................................................................... 15
8.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES ............................................................................................................. 16
8.3.1 Indoor unit ........................................................................................................................................................................ 16
8.3.2 Outdoor unit ..................................................................................................................................................................... 16
8.4 HYDRAULIC CONNECTIONS ..................................................................................................................................................... 17
8.4.1 Hydraulic circuit ................................................................................................................................................................ 17
8.4.2 Connections positions ....................................................................................................................................................... 18
8.4.2.1 Indoor unit model MP .................................................................................................................................................................... 18
8.4.2.2 Indoor unit model MPR .................................................................................................................................................................. 18
8.4.2.3 Outdoor unit .................................................................................................................................................................................. 18
8.4.3 Drainage system connection ............................................................................................................................................ 19
8.4.3.1 Indoor unit ..................................................................................................................................................................................... 19
8.4.3.2 Outdoor unit .................................................................................................................................................................................. 19
8.4.4 Installation of the relief valve discharge pipe ................................................................................................................... 19
8.4.5 Plant circuit loading .......................................................................................................................................................... 19
8.4.6 Unloading of the plant circuit ........................................................................................................................................... 20
8.5 INDICATIVE DIAGRAMS OF THE PLANT CIRCUIT ...................................................................................................................... 20
8.5.1 Standard schematic diagram of the plant ........................................................................................................................ 20
8.5.2 Schematic diagram of the plant with DHW recirculation ................................................................................................. 21
8.5.3 Particular schematic diagram of the plant with hydraulic separator and mixing valve ................................................... 21
8.6 REFRIGERANT CONNECTIONS ................................................................................................................................................. 21
8.6.1 Refrigerant diagram for i-SHWAK V4 06 e 08 models ...................................................................................................... 22
8.6.2 Refrigerant diagram for i-SHWAK V4 10 e 12 models ...................................................................................................... 22
8.6.1 Schema frigorifero i-SHWAK V4 14 e 16 ........................................................................................................................... 23
8.7 ELECTRICAL CONNECTIONS .................................................................................................................................................... 23
8.7.1 Indoor unit ........................................................................................................................................................................ 23
8.7.1.1 Terminal block connections ........................................................................................................................................................... 24
8.7.2 Outdoor unit ..................................................................................................................................................................... 26

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8.7.2.1 Terminal block connections ........................................................................................................................................................... 26
8.7.3 Wiring between indoor and outdoor units ....................................................................................................................... 27
8.7.4 Removal of the outdoor unit’s top cover for getting access to the terminal block and electric box ................................ 27
8.7.5 Safety thermostats ........................................................................................................................................................... 27
9 START UP .............................................................................................................................................................................. 27
10 INDICATIONS FOR THE USER ................................................................................................................................................. 28
11 SHUTDOWNS FOR LONG PERIODS ........................................................................................................................................ 28
12 MAINTENANCE AND PERIODIC CHECKS ................................................................................................................................. 29
12.1 ENVIRONMENTAL PROTECTION ............................................................................................................................................. 29
13 DISPOSAL .............................................................................................................................................................................. 29
14 TECHNICAL DATA .................................................................................................................................................................. 30
14.1 PERFORMANCE DATA ............................................................................................................................................................. 30
14.2 OUTDOOR UNITS .................................................................................................................................................................... 31
14.3 INDOOR UNITS ........................................................................................................................................................................ 32
15 ELECTRIC DATA ..................................................................................................................................................................... 33
15.1 INDOOR UNIT MAXIMUM POWER CONSUMPTION/MAXIMUM INPUT CURRENT ................................................................. 33
16 HYDRAULIC CIRCUIT’S AVAILABLE HEAD PRESSURES ............................................................................................................ 33
17 THREE-WAY VALVE PRESSURE DROP CURVE (VDIS1 OPTIONAL KIT) ..................................................................................... 35
18 DHW INSTANTANEOUS PREPARER ........................................................................................................................................ 36
19 OPERATION LIMITS ............................................................................................................................................................... 38
19.1 EVAPORATOR WATER FLOW RATE .................................................................................................................................................... 38
19.2 CHILLED WATER PRODUCTION (SUMMER OPERATION) ......................................................................................................................... 38
19.3 HOT WATER PRODUCTION (WINTER OPERATION) ............................................................................................................................... 38
19.4 AMBIENT AIR TEMPERATURE .......................................................................................................................................................... 38
20 CORRECTION FACTORS FOR OPERATION WITH GLYCOL ........................................................................................................ 39
21 DIMENSIONS ......................................................................................................................................................................... 40
21.1 INDOOR UNITS ........................................................................................................................................................................ 40
21.1.1 Indoor unit model MP ....................................................................................................................................................... 40
21.1.1 Indoor unit model MPR ..................................................................................................................................................... 40
21.2 OUTDOOR UNITS .................................................................................................................................................................... 41
21.2.1 MOD. i-SHWAK V4 10 / 12 ................................................................................................................................................ 41
21.2.2 MOD. i-SHWAK V4 10 / 12 ................................................................................................................................................ 41
21.2.3 MOD. i-SHWAK V4 14 / 14T / 16 / 16T ............................................................................................................................. 41
22 ACCESS PROCEDURE TO INTERNAL PARTS............................................................................................................................. 42
22.1 INDOOR UNIT .......................................................................................................................................................................... 42
22.2 OUTDOOR UNIT ...................................................................................................................................................................... 42
22.2.1 Mod. i-SHWAK V4 06 / 08 ................................................................................................................................................. 42
22.2.2 Mod. i-SHWAK V4 10 / 12 ................................................................................................................................................. 43
22.2.3 Mod. i-SHWAK V4 14 / 14T / 16 / 16T .............................................................................................................................. 43
23 COMPONENTS OF INDOOR AND OUTDOOR UNITS ............................................................................................................... 43
23.1 MP MODEL INDOOR UNIT ....................................................................................................................................................... 44
23.2 MPR MODEL INDOOR UNIT ..................................................................................................................................................... 44
23.3 INDOOR UNIT TEMPERATURE SENSOR ................................................................................................................................... 44
24 REPAIR AND MAINTENANCE PROCEDURES ........................................................................................................................... 45
24.1 FILTER CLEANING .................................................................................................................................................................... 45
24.2 REPLACEMENT OF THE ELECTRIC HEATER ............................................................................................................................... 45
25 WIRING DIAGRAMS .............................................................................................................................................................. 46
25.1 INDOOR UNIT ELECTRIC BOX LAYOUT ..................................................................................................................................... 46
26 CONTROL LOGICS .................................................................................................................................................................. 46
27 HANDBOOK FOR SOME CONFIGURATIONS OF INSTALLATION .............................................................................................. 46

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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The manual of i-SHWAK V4 units collects all the necessary information for the better use of the equipment under safety conditions
for the operator thus meeting the requirements listed in the 2006/42/CE Equipment Directive and following amendments.
1PURPOSES AND CONTENTS OF THE MANUAL
This manual provides basic information as for the selection, installation, operation and maintenance of i-SHWAK V4 units. It is
addressed to the installer and the user of the unit: it allows operating this equipment efficiently, even if the user does not have
any previous specific knowledge of it.
This manual describes the characteristics of the equipment when it was being put on the market; therefore, it may not capture
later technological improvements introduced by the company as part of its constant endeavour to enhance the performance,
ergonomics, safety and functionality.
The company introduces also technological improvements and is not constrained to update the manuals for previous versions of
appliances that could not be compatible. So make sure to use, for the installed unit, the supplied manual.
It’s recommended that, the user must follow the instructions contained in this booklet, especially those concerning the safety and
routine maintenance.
1.1 CONSERVATION OF THE MANUAL
The manual has to be always kept with the unit it refers to. It has to be stored in a safe place, away from the dust and moisture. It
has to be accessible to all users who shall consult it any time they are in doubt on how to operate the equipment.
The company reserves the right to modify its products and related manuals without necessarily updating previous versions of the
reference material. It declines also any responsibility for possible inaccuracies in the manual if due to printing or transcription
errors.
The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this
manual.
The company is available to give any detailed information about this manual and to give information regarding the use and the
maintenance of its own units.
1.2 GRAPHIC SYMBOLS
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 has to follow in order to guarantee the correct operation of the
equipment in complete safety. It indicates also general notes.
2SAFETY LAWS
The i-SHWAK V4 units have been designed in compliance with the following Directives and Harmonised Norms:
2006/42/CE, 2014/35/UE, 2014/30/UE, 2011/65/UE, 2012/19/UE Community Directives
UNI EN 378-1, 378-2, UNI EN 12735-1 Norms
CEI EN 60335-2-40 Norm
CEI EN 55014-1, CEI EN 55014-2, CEI EN 61000-3-2, CEI EN 61000-3-3, CEI EN 62233 Norms
And the following directives and regulations concerning the energy labeling and the eco-friendly products:
Community directive 2009/125/CE and subsequent transpositions
Community directive 2010/30/UE and subsequent transpositions
Regulation UE No 811/2013
Regulation UE No 813/2013
3PERMITTED USES
The company excludes any contractual and extra-contractual liabilities for damages caused to persons, animals or objects, by
incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the
information contained in this manual.
These units have been designed only for heating and/or cooling water. Any other use not expressly authorized by the
manufacturer is considered improper and therefore not allowed.
The location of the plant, the hydraulic and electrical circuits must be established by the planting designer and must take into
account both technical requirements as well as any applicable local laws and authorized specifications.
The execution of all works must be performed by skilled and qualified personnel and competent in the existing rules in the
country in which the appliance will be installed.

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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4GENERAL SAFETY GUIDELINES
Before beginning to operate on i-SHWAK V4 units, every user has to be perfectly knowledgeable about the functions of the
equipment and its controls and he must read before and understood the information listed in this manual.
It’s strictly forbidden to remove and/or tamper with any safety device.
Children or unassisted disabled persons are not allowed to use the appliance.
Do not touch the appliance when barefoot or parts of the body are wet or damp.
Do not clean the unit when the power supply is ‘ON’.
Do not pull, remove or twist the electrical cables coming out from the unit, even if it is disconnected from the main
power supply.
Do not step with your feet on the appliance, sit down and/or place any type of object.
Do not spray or pour water directly on the unit.
Do not dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags,
etc) as they may represent an environmental and life hazard.
Any routine and/or not-routine maintenance operation shall be carried out when the equipment has been shut down,
disconnected from electric and pneumatic power sources and after its pneumatic system has been discharged.
Do not put neither your hands nor insert screwdrivers, spanners or other tools into moving parts of the equipment.
The equipment supervisor and the maintenance man have to receive suitable training for the performance of their
tasks in safety.
Operators have to know how to use personal protective devices and have to know the accident-prevention guidelines
contained in national and international laws and norms.
4.1 HEALTH AND SAFETY OF WORKERS
The European Community has adopted a number of directives on workplace’s health and safety, which include 89/391/CEE,
89/686/CEE, 2009/104/CE, 86/188/CEE and 77/576/CEE directives. 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 has to be kept clean, tidy and free from objects that may prevent 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.
The unit operates with R410A refrigerant gas, which is a greenhouse gas according to the F-gas Regulation (EU) 517/2014
(mandatory in the European area). This Regulation, among the provisions, requires all operators intervening in greenhouse gas
systems to be in possession of a certificate issued or recognized by the competent authority, attesting to a successful completion
of an examination entitling them to carry out such work. In particular:
Device contains up to 3kg of the total amount of refrigerant gas: Category II certificate.
Device contains 3kg or more than 3kg of the total amount of refrigerant gas: Category I certificate.
The refrigerant R410A in gaseous form is heavier than air and tends to concentrate highly in little ventilated environments when a
leak occurs. Its inhalation can cause dizziness, suffocation and can develop lethal gas if it becomes in contact with open flames or
hot objects, (please see paragraph 4.4 “REFRIGERANT SAFETY DATA SHEET”).
For any operation on the heat pump system:
Wear appropriate Personal Protective Equipment (PPE) specifically, gloves and goggles
Ensure that the workplace is well ventilated. Do not work in closed rooms or ditches with weak air circulation.
Do not work on the refrigerant near open flames or near hot parts.
Avoid any refrigerant leakage into the environment and pay particular attention to leakage from pipes and/or
fittings after evacuating the refrigerant circuit.

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4.2 PERSONAL PROTECTION EQUIPMENT
When operating and maintaining the “i-SHWAK V4” units, it is required to use the following personal protective equipment.
Protective clothing: Maintenance men and operators have to wear protective clothing that complies with the basic
safety requirements currently in force. In case of slippery floors, users have to wear safety shoes with non-slip soles.
Gloves: During maintenance or cleaning operation protection gloves have to be used
Mask and goggles: Respiratory protection (mask) and eye protection (goggles) should be used during
cleaning and maintenance operations.
4.3 SAFETY SYMBOLS
The outdoor unit features the following safety signs, which has to be complied with:
General hazard
Electric shock hazard
Presence of moving organs
Presence of surfaces that may cause injures
Presence of hot surfaces which can cause burns

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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4.4 REFRIGERANT SAFETY DATA SHEET
Name:
R410A (50% Difluoromethane (R32); 50% Pentafluoroethane (R125).
RISKS IN DICATIONS
Major risks:
Asphyxia
Specific risks:
The rapid evaporation can cause freezing.
FIRST AID
General information:
Never give anything by mouth to an unconscious person.
Inhalation:
Outdoors open transport.
Use oxygen or artificial respiration if necessary.
Do not give adrenaline or similar drugs
Eyes contact:
Rinse carefully with water for at least 15 minutes and consult a doctor.
Contact with skin:
Wash immediately with plenty of water.
Take off immediately the contaminated clothes.
FIRE PREVENTION
Extinguishing Media:
Whatever.
Specific risks:
Increase in pressure.
Specifics methods:
Use water spray to cool containers
MISURE IN CASO DI FUORIUSCITA ACCIDENTALE
Personal precautions:
Evacuate personnel to safe areas.
Provide adequate ventilation.
Use personal protective equipment.
Environmental precautions:
Evaporate.
Cleaning method:
Evaporate.
MANIPULATION AND STORAGE
Manipulation
Action/technical precautions:
Provide sufficient air exchange and/or exhaust in work rooms.
Recommendations for safe use:
Do not breathe vapors or spray mist.
Storage:
Close tightly and store in a cool, dry and well ventilated place.
Store in original container. Incompatible products: explosive, flammable materials, Organic peroxide
EXPOSURE CONTROL / PERSONAL PROTECTION
Control parameters:
AEL (8-h e 12-h TWA) = 1000 ml/m³ for each of the two components.
Respiratory protection:
For rescue and maintenance operation in storage tanks use self-contained respirator apparatus.
The vapors are heavier than air and can cause suffocation by reducing oxygen available for breathing.
Eyes protection:
Safety glasses.
Protection of hands:
Rubber gloves.
Hygiene measures:
Do not smoke.
PHYSICAL AND CHEMICAL PROPERTIES
Colour:
Colourless.
Odor:
Light.
Boiling point:
-52.8°C at atmospheric pressure.
Lighting point:
do not ignite.
Density:
1.08 kg/l at 25°C.
Solubility in water:
Negligible.
STABILITY AND REACTIVITY
Stability:
No reactivity when used with the appropriate instructions.
Materials to avoid:
Highly oxidizing materials. Incompatible with magnesium, zinc, sodium, potassium and aluminum.
The incompatibility is more serious if the metal is present in powdered form or if the surfaces were, recently, unprotected.
Decomposition products
These products are halogenated compounds, hydrogen fluoride, carbon oxides (CO, CO2), carbonyl halides.
Risks:
TOXICOLOGICAL INFORMATION
Acute toxicity:
(R32) LC50/ inhalation /4 hours/on rat >760 ml/l
(R125) LC50/ inhalation /4 hours/on rat >3480 mg/l
Local effects:
Concentrations substantially above the TLV may cause narcotic effects.
Inhalation of decomposed products of high concentrations may cause respiratory failure (pulmonary edema).
Long term toxicity:
Did not show carcinogenic, teratogenic or mutagenic effects in animal experiments.
ECOLOGICAL INFORMATION
Global warming potential
2088
GWP (R744=1):
Ozone Depletion Potential
0
Ozone ODP (R11=1):
Disposal considerations:
Usable with reconditioning.

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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5GENERAL CHARACTERISTICS
5.1 MODELLI DISPONIBILI
Model MP1, Single-phase wall mounted version
model MPR1, Single-phase wall mounted version with rapid producer of DHW
model MP3, three-phase wall mounted version
model MPR3, three-phase wall mounted version with rapid producer of DHW
5.2 WALL MOUNTED VERSION MODEL MP
As standard:
1) High efficiency circulator according to ErP up to EEI≤0,21.
2) Exchangers of the heat pump in stainless steel AISI 304
3) An included Y-filter
4) Automatic air vent valve mounted on heat pump side
5) Expansion vessel 8 liters mounted on heat pump side
6) Pressure relief valves to be mounted to collecting system
7) Built in flow switch for heat exchanger protection
8) Single-phase or three-phase electric power supply
9) External electric heaters controller logic for both plant side and technical DHS in integration and/or substitution of the
heat pump
10) Controller logic for boiler or similar source for both plant and DHW technical sides in integration and/or substitution of
the heat pump (digital contact)
11) Integrated climatic system for plant
12) Integrated controller logic for double set-point of plant side
13) Integrated controller logic for intelligent energy resources
Accessories:
1) 3-way valve for commutation between plant / DHW technical side (optional kit, mounted in the factory mod. VDIS1)
2) Single and three-phase electric heaters of 1,2 - 3 - 4,5 kW (depending on availability – check the possibility in chapter 7),
common to the plant and DHW technical sides (if the optional diverter valve kit is present), managed in integration
and/or substitution mode. Double safety level with automatic and manual reset thermostat for protecting the system and
the user (optional kit, factory-fitted mod. RExxxx).
3) Mixer’s controller logic for plant side in both heating and cooling operations, controller logic for solar integration.
Controller logic for relaunching circulator (secondary) plant side (optional kit, installed in the factory mod. GI2)
5.3 WALL MOUTED VERSION MODEL MPR
As standard:
1) Circulator for the heat pump and the rapid preparer of high efficiency according to ErP directive up to values of EEI≤0.21
2) Heat exchangers of the heat pump in stainless steel AISI 304
3) Integrated Y filter
4) Automatic air vent valve mounted on heat pump side
5) Expansion vessel of 8 liters on heat pump side
6) 3 bar pressure relief valve to be connected with to a collecting system
7) Built in flow switch for heat exchanger protection
8) Flowmeter for managing the rapid production of DHW
9) Single or three phase electric power supply
10) External electric heaters controller logic for both plant side and technical DHS in integration and/or substitution of the
heat pump
11) Controller logic for boiler or similar source for both plant and DHW technical sides in integration and/or substitution of
the heat pump (digital contact)
12) Integrated climatic system for plant
13) Controller logic for plant remote sensor
14) Integrated controller logic for double set-point of plant side
15) Integrated controller logic for intelligent energy resources
Accessories:
1) 3-way valve for commutation between plant/DHW technical sides (optional kit, mounted in the factory mod. VDIS1)
2) Single and three phase electric heaters from 2 - 3 - 4,5 kW, common to the plant and DHW technical sides (if the optional
diverter valve kit is present), managed in integration and/or substitution mode. Double safety level with automatic and
manual reset thermostat for protecting the system and the user (optional kit, factory-fitted mod. RExxxx)
3) Mixer’s controller logic for plant side in both heating and cooling operations. controller logic for solar integration.
Controller logic for relaunching circulator (secondary) plant side (optional kit, installed in the factory mod. GI2)

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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6TECHNICAL CHARACTERISTICS
The reversible heat pumps “i-SHWAK V4” series are designed for applications in residential and commercial areas, these units are
extremely versatile and can operate in heat pump mode with the ability of producing hot water at a temperature of 63°C using the
electric heaters for environmental heating and sanitary applications.
The new i-SHWAK V4 system, which is the result of the evolution of the previous model V3, is the ideal solution for the total home
climate control (with the accessories Hi-T and HNS Box). For new or already existing house if equipped with a radiant floor or fan
coil as heating system, with feeding from electric power network and a renewable energy sources.
The INVERTER compressor with brushless DC motor technology, matched with electronic expansion valve, pump and variable
speed blower always with brushless motor, as well as the integrated circulators, optimize the power consumption and the
operation efficiency of the refrigerating components and of the entire system.
6.1 FRAME
The “i-SHWAK V4” units are all made up of hot-galvanised thick sheet metal, painted with polyurethane powder enamels at 180°C
to ensure the best resistance against atmospheric agents. The frame is self-supporting with removable panels. All screws and
rivets for outdoor installations are in galvanized stainless steel. The indoor units also have a self-supporting structure made of
galvanized steel with removable painted panels.
6.2 REFRIGERANT CIRCUIT
The refrigerant circuit has been manufactured by means of international primary brands components and according to the UNI EN
13134 rule concerning welding procedures. The refrigerant gas used in these units is R410A. The refrigerant circuit includes: 4 way
reverse cycle valve, electronic expansion valve, liquid separator, liquid receiver, valves for maintenance and control, pressure
safety device (high pressure switch), pressure transducers to accurately control the evaporating and condensing pressures, filters
for throttling valve to avoid its clogging, SAE valves for liquid and gas line.
6.3 COMPRESSORS
The used DC inverter compressors are twin rotary hermetic type, designed especially to be used with R410 refrigerant. The
compressors are all supplied with thermal overload protection and are mounted on a rubber material acting as shock absorbers.
The compressors are mounted in a separate chamber in order to be separated from the air flow for reducing noises and are also
supplied with crankcase heater which operates in order to avoid the oil dilution which may cause seizure of the compressor. The
crankcase heater starts when the compressor remains off for duration no less than 30 minutes and when the discharge
temperature is under 20°C (with hysteresis of 2.0°C). When the compressor restarts, the crankcase heater will stop operation. We
recommend to turn on the unit and to put it in standby mode at least 6 hours before the first startup.
The inspection of the compressor is possible through the front panel of the unit that allows the maintenance of the compressors
even if the unit is working.
6.4 AIR SIDE EXCHANGERS
The air side exchangers are made up of copper pipes and aluminum fins. The diameter of the copper pipes is 9.52mm, the
thickness of the aluminum fins is 0,1mm. The pipes are mechanically expanded into the aluminum 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
speed (and low noise emission) fan motors.
6.5 FANS
The fans are axial type with aluminum aero-foil blades. They are statically and dynamically balanced and supplied complete of the
safety fan guard according to the CE EN 60335-2-80 rule (safety for electrical apparatus of domestic and similar use). They are
mounted on the unit frame by interposition of rubber vibration dampers. The electric motors are all brushless DC type with 8
poles (about 200/1000 rpm). The motors are directly driven with an integrated thermal overload protection. The protection class
of the motors is IP44.
6.6 USER HEAT EXCHANGERS
The user heat exchangers are made up of AISI 304 stainless steel braze-welded plates type. The user heat exchangers are factory
insulated with flexible close cell material. Each evaporator is provided with a temperature sensor working as antifreeze protection
that activates the circulator, even in the case when the unit is turned off when the condition parameters set in the controller have
been occurred.
6.7 ELECTRIC BOX
The electric box is manufactured according to according current European Union laws. The accessibility to the electric board is
possible after removing the side and top panels of the outdoor unit by using an appropriate tool, and by removing the ABS plastic
cover for the indoor units. The protection degree is IP24. The outdoor unit terminal board is supplied with voltage free contacts
for general alarm. The indoor unit terminal board is supplied with contacts for the sanitary water temperature sensor, auxiliary
heater and the handling of the outer 3-way valve.

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11
6.8 CONTROL SYSTEM
The i-SHWAK V4 units are all equipped with a microprocessor adopting an overheating control logic program through the
electronic thermostatic valve managed by the pressure transducers signals and temperature sensor. The microprocessor can
manage also the following functions: water temperature regulation, antifreeze protection, compressor’s time setting, compressor
automatic starting sequence, alarm reset, alarm management and operating LED. The control system together with the INVERTER
technology and the on board sensors continuously monitor and adapt the performance of the inverter compressor, and of the fan
(2 fans as for the i-SHWAK V4 14, 14T, 16 and 16T models).
6.9 MONITORING AND PROTECTION DEVICES
All internal units are standard supplied with the following monitoring and protection devices: return water temperature sensor
installed at the return water pipe line from the plant, operating and antifreeze sensor installed at the outlet pipe of the water to
the plant and on water side a water flow switch is installed to protect the evaporator. All internal units are supplied with high
pressure transducer, low pressure transducer, compressor’s inlet and outlet temperature sensors, compressors thermal protection
device, fans thermal protection device, high pressure flow switch HP.
6.10 HYDRAULIC CIRCUIT
The i-SHWAK V4 outdoor units are supplied with an integrated hydraulic circuit including a high efficiency (EEI≤0,23 for the sizes of
V4 14, 16, 10 and 12, EEI≤0,21 for V4 06, 08) modulating BRUSHLESS circulator, suitable also for chilled water utilization and is
directly managed by the controller on board the unit, Y filter with a mesh of 1000 μm, plate heat exchanger, flow switch for
protection, expansion vessel of 8 liters, relief valve (3 bar) to be connected to the collecting system the automatic air release
valve.
6.11 FAN SPEED CONTROLLER
This type of control is managed by the microprocessor and is necessary for optimizing the pressure of evaporation/condensation
during summer/winter operation in order to allow proper running of the unit.

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7DESCRIPTION OF THE INDOOR UNIT CODE
The i-SHWAK V4 system is composed of moto-condensing outdoor unit and of an indoor unit.
The code of the unit consists of:
no. 7 fixed digits
The symbol # as separator
no. 9 variable digits (fields) which identify the sizes, power supply and factory-fitted accessories (the field RE is composed of two digits)
no. 2 fixed digits equals to 0, if are not used
no. 2 variable digits (field MC) which identifies the i-SHWAK V4 series in its customizations (the field MC is composed of two digits)
0110917#(CT)(AE)(K3V)(ACS)(GI)(RE)00(MC)
FATHER CODE
TAGLIA
POWER SUPPLY
FACTORY FITTED ACCESSORY
0110917#
CT1
AE
K3V
ACS
GI
RE
Output capacity
Electrical power
supply
Kit 3 vie
Kit ACS
Modulo gestione impianto
Potenza resistenza
16
06
17
08
18
10
19
12
20
14
21
16
0
Single-phase
1
Three-phase
0
Without 3 way kit
1
With 3 way kit
0
Without DHW kit
1
With DHW kit
0
Wiithout GI module
1
With GI module
00
Without E-heater
02
E-heater of 2 kW
03
E-heater of 3 kW
04
E-heater of 4,5 kW
31
E-heater of 1,5 kW

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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FIELD/VARIANTS TABLE
The filed “CT” describes the size of the coupled outdoor and indoor units.
The field AE describes the electric power supply of the indoor unit and of the eventual auxiliary electric heater (Accessory RE).
The remaining fields (K3V, ACS, GI, RE) describe the factory fitted accessories and should be requested at the time of the order.
The variant 0 of the fields K3V, GI, RE describes the standard configuration of each size and model.
Example: the code of the standard configuration (without accessories) of the model MPR1 of 06 kW is obtained as below:
0110917#(CT1)(AE)(K3V)(ACS)(GI)(RE)00(MC) → 0110917#(16)(0)(0)(1)(0)(00)00(XX) → 0110917#1600100000XX.
Since this model is a single-phase one and equipped with rapid DHW producer, you have to set AE to be 0 and DHW to be1.
Refer to the following table (e.g. i-SHWAK V4 06 and 16 models)for the codes of the standard configuration of the various models
(for selecting the accessories, just set the corresponding variant to the desired value according to the TABLE FIELDS/ VARIANTS
described above):
Indoor unit
Model
Description
Standard configuration code
V4 06
MP1
Single-phase wall mounted unit
0110917#1600000000XX
MPR1
Single-phase wall mounted unit with rapid producer of DHW
0110917#1600100000XX
MP3
Three-phase wall mounted unit
0110917#1610000000XX
MPR3
Three-phase wall mounted unit with rapid producer of DHW
0110917#1610100000XX
V4 16
MP1
Single-phase wall mounted unit
0110917#2100000000XX
MPR1
Single-phase wall mounted unit with rapid producer of DHW
0110917#2100100000XX
MP3
Three-phase wall mounted unit
0110917#2110000000XX
MPR3
Three-phase wall mounted unit with rapid producer of DHW
0110917#2110100000XX
For more clarification, in the following table are shown the values only of the fields which identify the different models of the
indoor units, and factory-fitted accessories that are selectable by setting the appropriate variant to the desired value (in
accordance with TABLE FIELDS/VARIANTS shown above):
Indoor unit
Model
Description
CT
AE
ACS
Selectable
accessories
V4 06
MP1
Single-phase wall mounted unit
16
0
0
K3V, GI, RE
MPR1
Single-phase wall mounted unit with rapid producer of DHW
16
0
1
K3V, GI, RE
MP3
Three-phase wall mounted unit
16
1
0
K3V, GI, RE
MPR3
Three-phase wall mounted unit with rapid producer of DHW
16
1
1
K3V, GI, RE
V4 16
MP1
Single-phase wall mounted unit
21
0
0
K3V, GI, RE
MPR1
Single-phase wall mounted unit with rapid producer of DHW
21
0
1
K3V, GI, RE
MP3
Three-phase wall mounted unit
21
1
0
K3V, GI, RE
MPR3
Three-phase wall mounted unit with rapid producer of DHW
21
1
1
K3V, GI, RE
Fieldo
Variant
Description
CT
16 ÷21
Nominal heating capacity of the unit.
AE
0
Single-phase power supply.
1
Three-phase power supply.
K3V
0
Unit not equipped with the 3 way kit.
1
Unit equipped with the 3 way kit (known as VDIS1), for the commutation between plant/DHW technical side.
ACS
0
Unit not equipped with DHW kit.
1
Unit equipped with the kit of instantaneous production of DHW. The indoor units provided with the DHW kit have a width
greater than those without it.
GI
0
Unit not equipped with plant managing module.
1
The GI additional module implements some useful functions for managing the plant, such as: the mixer’s controller logic for
plant side in heating and cooling operations, controller logic for DHW technical side, controller logic for solar integration.
Controller logic for relaunching (secondary) circulator plant side on plant side.
RE
00
Without electric heater.
02
Single or three-phase electric heater of 2 kW for plant integration installed on the inner collector of the unit. If the kit VDIS1 is
present, it is common to the both plant and DHW technical sides. It is managed in integration mode and/or substitution.
Double safety level thermostats with automatic and manual reset for protecting the plant and the user.
03
Electric heater of 3 kW with the same characteristics as the one described in the variant 01 of the field RE.
04
Electric heater of 4.5 kW with the same characteristics as the one described in the variant 01 of the field RE.
31
E-heater of 1,5 kW with the technical characteristics similar to those described in the variant 01 of the field “RE”, available
only as single phase electric power version.

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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Name of accessories:
Filed
Variant
Description
Name
K3V
1
Internal DHW diverter valve kit
VDIS1
GI
1
Additional module of plant management
GI2
Herein below is represented the correspondence between the variants of RE and the name of its electric heaters, depending on
the electric power supply of the unit.
Filed
Variant
Description
NAME
Single-phase
Three-phase
RE
00
Without E-heater
/
/
02
E-heater of 2 kW
RE2.0M2
RE2.0T
03
E-heater of 3 kW
RE3.0M2
RE3.0T
04
E-heater of 4,5 kW
RE4.0M2
RE4.0T
31
E-heater of 1,5 kW
7.1 OPTIONAL ACCESSORIES
NO FACTORY FITTED ACCESSORIES (OPTIONAL)
AG
Rubber shock absorbers to be inserted at the basement of the outdoor unit to dampen possible vibrations.
KAS
Antifreeze kit. It uses a self-heating cable wrapped at the basement of the outdoor unit near the condensing coil.
IMPORTANT
ONLY THE NO FACTORY-FITTED OPTIONAL ACCESSORIES CAN BE REQUIRED AFTER THE ORDER OF THE UNIT, WHILE THE FACTORY-
FITTED OPTIONAL ACCESSORIES CANNOT BE REQUIRED AFTER ORDERING OF THE UNIT.
WARNING: The optional accessories are subject to revisions. They may be changed without the need to update the previous
manuals and without giving prior notice. If you are interested in buying these accessories after you have purchased the unit,
please contact our offices for the availability.
8INSTALLATION
WARNING: All the operation described in next chapters MUST BE DONE BY TRAINED PEOPLE ONLY. Before any
operation on the unit, be sure that the electric power supply is disconnected.
8.1 GENERALITY
When installing or servicing the unit, it is necessary to strictly follow the rules listed in this manual, to conform to all the
specifications of the labels on the unit, and to take any possible precautions. Not observing the rules reported on this manual can
create dangerous situations.
After receiving the unit, immediately check its integrity. The unit left the factory in perfect condition; any eventual
damage has to be questioned to the carrier and recorded on the Delivery Note before signing it.
The company has to be informed, within 8 days, of the extent of the damage. The Customer should prepare a written statement of
any severe damage.
WARNING: The moto-condensing units are designed for outdoors installation. The installation place should be
enough away from fire risks. Therefore all the necessary measures should be adopted in order to prevent the risk of
fire at the installation place. In any case the outside temperature must not exceed 46°C. Beyond this value, the unit is
no longer covered by the actual regulations in the field of safety of pressure equipment.
WARNING: If they should be installed in an areas of the building subject to low temperatures (attics, basements,
etc.), refer please to the precautions listed in Chapters 11) and 20.
WARNING: The unit must be installed so as to allow free movement for repair and maintenance operations. The
warranty does not cover costs due to platforms or other lifting systems needed for eventual interventions.
All checks and maintenance operations must be carried out only by qualified personnel.
Before any operation on the unit, make sure that the electric supply is disconnected.
WARNING: Inside the unit, there are some moving components. Be very careful when operating in their surroundings
even if the electric power supply is disconnected.
The top part and discharge pipes of the compressor operates at high temperatures. Be sure to let the unit to become
cool before beginning any maintenance work.
Be especially careful when going to operate in the surrounding of the coils.
The aluminum fins are very sharp and can cause serious injury.
After the maintenance operations, close the panels by fixing them with screws.

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15
8.2 LIFTING AND HANDLING
The handling must be performed by qualified personnel, properly equipped with appropriate equipment to the weight and the
encumbrance of the unit, in compliance with safety regulations of accident preventing.
8.2.1 Indoor unit
The apparatus is supplied on wooden pallets protected by
carton packing box.
Do not place anything on the top of the carton box.
Insert the forks from the indicated side.
During the unloading of the unit, utmost care must be taken to
avoid abrupt or violent maneuvers in order to protect the
internal electronic components.
Use spacers to prevent damage to the unit.
During the unit’s handling, it’s forbidden to exceed the
maximum allowed inclination as indicated in the right figure.
It is recommended to unpack the unit only with equipment
positioned near the installation place, otherwise take special care
not to damage the unit when handling it.
Removal of the packing box:
Cut the strap fasteners.
Open the top part.
Remove the apparatus from the packing box.
Remove the clear pellicle that wraps the apparatus.
8.2.2 Outdoor unit
It is recommended to unpack the unit only with equipment
positioned near the installation place, otherwise take special care
not to damage the unit when handling it.
Removal of the packing box:
Cut the strap fasteners.
Remove the apparatus by lifting the packing upward.
 Remove the corner pieces of polystyrene foam.
Remove the unit from the pallet by unscrewing the screws that
hold the feet to the pallet itself.
When unloading and installing the unit, it is highly recommended to
avoid any sudden move in order to protect the inner components.
The units can be lifted by means of a forklift or, in alternative, of
belts, being sure not to damage the lateral panels and the cover. It
is important to keep the unit horizontal during these operations.
Note: All the pictures in this manual are for explanation purpose only. They may be
slightly different from the unit you purchased. The actual shape shall prevail.

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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8.3 LOCATION AND MINIMUM TECHNICAL CLEARANCES
8.3.1 Indoor unit
The installation must allow authorized personnel to operate in the
event of maintenance, in an easy manner respecting both the safety
distances between the units and other apparatus that the technical
spaces (expressed in mm) indicated in the table:
(*) Recommended distances for lateral inspection in case of
concealed installation. In case concealed installation, the inspection
side is not required and you can keep up to 10mm on each side.
MOD.
L1*
L2*
H1
H2
MP/MPR
300
300
300
1500
Make sure that the equipment is installed and protected from
the weather elements in a clean and dry location.
Place the unit on the wall.
Use the provided template to mark the mounting holes.
Drill holes in the marked positions and insert the plugs.
Hook the unit.
(A) Level
8.3.2 Outdoor unit
All the outdoor units of i-SHWAK V4 series are designed for outdoor installation: any cover over the unit and location near trees
(even if they partially cover the unit) is avoided in order to allow the air recirculation. It is advisable to create a proper basement,
with a size similar to unit foot-print. Unit vibration level is very low: it is advisable however, to fit a rigid rubber band between
basement and unit base-frame. It is also possible to install anti-vibration supports (springs or rubbers) to keep vibrations at a very
low level. Absolute care has to be taken to ensure adequate air volume to the condenser. Re-circulation of discharge air has to be
avoided; failure to observe this point will result in poor performance or activation of safety controls. For these reasons it is
necessary to respect the following clearances (expressed in mm):
MOD.
A
B
C
D
E
i-SHWAK V4 06 U.E.
1500
500
400
400
500
i-SHWAK V4 08 U.E.
1500
500
400
400
500
i-SHWAK V4 10 U.E.
1500
500
400
400
500
i-SHWAK V4 12 U.E.
1500
500
400
400
500
i-SHWAK V4 14 e 14T U.E.
1500
500
400
400
500
i-SHWAK V4 16 and 16T U.E.
1500
500
400
400
500
Positioning on the floor
Provide lifting from the floor of the unit:
20 mm without conveying the condensate drain
90 ÷ 100 mm to allow the conveying of the condensate drain
In case of installation in areas subjected to extreme cold or heavy
snow, where there is the possibility of freezing, it’s recommended to
provide suitable frost protection systems.
(A) Level
(1) condensate drain pipe

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
17
Suspended positioning
In the case of suspended installation, adequate brackets must
be used to support the weight of the unit and also depending
also on the type of the wall to which should be fixed.
Make sure that the section of the wall doesn’t overlap to
bearing elements of construction, pipelines or power lines.
(2) brackets for positioning (not supplied with the unit)
Both units must be positioned on a leveled surface; the holders used for installation must be able to support its
weight.
8.4 HYDRAULIC CONNECTIONS
The hydraulic connections have to be installed in accordance with national and/or local regulations; pipes can be made up of steel,
galvanized steel or PVC. Pipes have to be designed depending on the nominal water flow and on the hydraulic pressure drops of
the system. All pipes have to be insulated with closed-cell material of adequate thickness. It is recommended to connect the
indoor unit to the piping using flexible joints. The hydraulic circuit should include the following components:
Hole thermometers to monitor the circuit’s temperature.
Manual shut-off valves to separate the chiller from the hydraulic circuit.
Loading group and unloading valve.
Anti-vibration joints and supports for the piping where necessary.
WARNING: make sure that the size of the pipes shall not exceed the maximum head loss on the plant side given in
the table in the Paragraph 14.3 (see the available head pressure data).
WARNING: connect the pipes to their attacks always by the way of key against key method.
WARNING: The integrated expansion vessel on the plant side has a limited capacity of 8 liters. The installer should
verify that if the expansion vessel is adequate to the real capacity of the plant circuit, otherwise should be provide
an additional expansion vessel.
For the installation position of the expansion vessel (indicated as additional expansion vessel), please refer to
Paragraph 8.5.
WARNING: check that the weight of the pipes does not grave about the structure of the machine.
WARNING: the water return pipe should be in correspondence with the connection labelled: ”TECHNIC WATER
RETURN”, otherwise the evaporator may freeze.
WARNING: If the water flow switch (factory mounted) is altered or removed, the warranty will no longer be valid.
Please refer to the wiring diagram for the water flow switch electric connections.
The metallic Y-filter must be kept clean, so make sure that it is still clean after the installation of the unit, and then
check it periodically (see Paragraph 24.1).
The water on the loading/topping up pipe must be opportunely pre-filtered from any suspended particles and
impurities through the use cartridge filter (washable, wrapped wire, etc.) of at least 100 microns.
Check the water hardness with which you load and top up the plant circuit. With particularly hard water, in this
case it is necessary to utilize a water softener. For treating water for the plant, please refer to UNI 8065.
The heating system and safety relief valves must meet with the requirements of regulation EN 12828.
8.4.1 Hydraulic circuit
FS
D
To the p lant W ater
supply
in let
FM
Technic
w a te r
retu rn
D IV ER TE R V ALV E
(VD IS 1 k it )
H ea t e xch an ger
R410A / ea u
D H W
excha n ger
R
Liquid e
pip e
Ga s
pip e
From the
D H W - R
puffer
From th e
D H W -R
puffer
To the
D H W -R
puffer
To the
D H W - R
user
H YD R O NIC C IR U IT INDOOR U NIT (m od els M P / M P R) D H W INSTANTAN EO U S P R EP A RE R
(M O DELLO M P R)
1
2
3
4
5
Key
F M
FS
R
Circulator pump
F M
FS
R
Flow switch
F M
FS
R
Flow meter
F M
FS
R
3 bar relief valve
F M
FS
R
8 liters expansion vessel
F M
FS
R
Air vent valve
F M
FS
R
Y-filter with metallic mesh of 1000µ
F M
FS
R
Temperature sensor
F M
FS
R
Opetional auxiliary E-heater with
double protection thermostat
1
Heat exchanger inlet sensor
2
Heat exchanger outlet exchanger
3
Primary circuit inlet sensor DHW-R
4
Secondary ciruit sensor DHW-R
5
Secondary circuit outlet sensor DHW-R

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8.4.2 Connections positions
8.4.2.1 Indoor unit model MP
A. To the plant (1”M)
B. To the DHW puffer ACS (1”M, in the case of VDIS1 KIT)
C. Technic water return (1”M)
D. Gas pipe (see Paragraph 14.3)
E. Liquid pipe (see Paragraph 14.3)
F. Power supply input
G. Condensate outlet (joint Ø 14 mm)
8.4.2.2 Indoor unit model MPR
A. To the plant (1”M)
B. To the DHW puffer ACS (1”M, in case di kit VDIS1)
C. Technical water return (1”M)
D. Linea gas (see paragraph 14.3.)
E. Liquid line (see Paragraph 14.3.)
F. Ingresso alimentazione elettrica
G. Discharge of safety valve (hose connector Ø 14 mm)
H. Water supply inlet (3/4”M)
I. To the DHW-R use (3/4”M)
J. From the puffer ACS-R (3/4”M)
K. To the puffer ACS-R (3/4”M)
For DHW-R user, it means the point(s) of using of domestic hot water produced by the instantaneous preparer DHW.
The DHW-R puffer means the storage of technical water used to produce the domestic hot water through the
instantaneous preparer of DHW.
The DHW-R means “rapid” production of the domestic hot water.
8.4.2.3 Outdoor unit
Units 06, 08, 10 and 12
A. Power supply cover (terminal block)
B. Gas connections cover
C. Gas connections
Model
Liquid pipe
Gas pipe
06
3/8 SAE
5/8 SAE
08
3/8 SAE
5/8 SAE
10
3/8 SAE
5/8 SAE
12
3/8 SAE
5/8 SAE

i-SHWAK V4 Inverter air/water chillers and heat pumps with wall-mounted indoor unit and remote condensing outdoor unit
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Units 14, 14T, 16 and 16
A. Power supply and signal cables
(remove the rear side cover to get access
to the terminal block)
B. Gas connections cover
C. Gas connections
Models
Liquid pipe
Gas pipe
14 / 14T
3/8 SAE
5/8 SAE
16 / 16T
3/8 SAE
5/8 SAE
8.4.3 Drainage system connection
8.4.3.1 Indoor unit
The connection of a condensate drainage system is not necessary for the indoor units since all pipes and cold components are
insulated with closed-cell foam of an adequate thickness.
8.4.3.2 Outdoor unit
All the outdoor units have been designed in a way to use their own basement as a drain pan.
Locate the hole at the basement of the unit between the
finned coil and fan, A.
Connect to the hole the provided fitting joint, B.
Connect a hose to the nozzle of the supplied fitting joint.
Direct the hose into the disposal place for condensate
water.
Keep a sufficient slope to ensure the smooth flow of
condensate water.
8.4.4 Installation of the relief valve discharge pipe
On the basis of the indoor unit there is a pipe connector attached to the relief valve on the plant side to ensure the proper
discharge of the water when the relief valve opens in case of overpressure (for the position, please refer to section 8.4.2).
Connect a rubber pipe to the connection disposed on the unit, see connection positions.
•Secure it with pipe clamp.
•Direct the hose towards an appropriate location for unloading.
•A sufficient slope should be maintained to ensure the smooth flow.
•Do not "strangle" the pipe.
•Check for proper water drainage
8.4.5 Plant circuit loading
WARNING: Verify all the loading/topping up operations.
WARNING: Before beginning the loading/topping up operation of the plant circuit, disconnect the unit for the
electric power supply.
WARNING: The loading/topping up of the plant circuit must always be done under controlled conditions of
pressure (max 1,5 bar). Make sure that you have installed on the line of loading/topping up a pressure reducer and
a relief valve as indicated in the Paragraph 8.5.
WARNING: The water on the loading/topping up pipe must be suitably pre-filtered from any impurities and
suspended particles. Make sure that you have installed a cartridge filter removable as indicated in Paragraph 8.5.
WARNING: In this case both the accessory VDIS1, before proceeding to the loading/topping up of the plant circuit,
place in mid-travel the three-way valve of the indoor unit by actuating the black lever. Restore the normal position
of the black lever after finishing the loading/topping up operation of the plant circuit.
WARNING: Before beginning the loading /topping up operation, unscrew the plugs of the air vent valves (one on
MP models and two on MPR models). Tighten the plugs after finishing the operation of loading/topping up of the
plant circuit system.
A
B