MAXA i-32V5C MIDI 0121 User manual
www.maxa.it
R32
i-32V5C MIDI 0121
i-32V5C MIDI 0126
i-32V5C MIDI 0128
i-32V5C MIDI 0132
i-32V5H MIDI 0121
i-32V5H MIDI 0126
i-32V5H MIDI 0128
i-32V5H MIDI 0132
Chiller and Inverter Air/Water heat pumps with axial fan
User-Installer Manual
This manual has been created for informave purpose. The company declines any responsibility for the results of any projecng or any installaon based on the
explanaons and/or on the technical specicaons provided in this manual. It is besides forbidden the reproducon under any form of the texts of the gures
contained in this manual. This manual is a translaon from the ocial italian language version. For reasons of environmental respect the Company will not provide
the hard copy in the original language which could be directly requested or downloaded from the Company website at any me. In case of any dispute, the original
languate manual will be the trusted one. Even paral reproducon PROHIBITED © Copyright - Advanx SpA
Model
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
2
00 01-2021 EM AR First emission
Rev Date Compiled Approved Note
Code Serie
MUI01040120001.00 Chillers and Inverter Air/Water heat pumps with axial fan
3
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
CONTENTS
1.PURPOSE AND CONTENTS OF THE MANUAL..................................................................... 5
1.1 HOW TO KEEP THE MANUAL ....................................................................................... 5
1.2 GRAPHIC SYMBOLS USED IN THE MANUAL................................................................. 5
2. NORMATIVE REFERENCES.................................................................................................. 5
3. PERMITTED USE................................................................................................................. 6
4. GENERAL SAFETY GUIDELINES........................................................................................... 6
4.1 WORKERS' HEALTH AND SAFETY ................................................................................. 7
4.2 PERSONAL PROTECTIVE EQUIPMENT .......................................................................... 7
4.3 SAFETY SIGNS .............................................................................................................. 8
4.5 SPECIFIC R32 GAS WARNINGS ................................................................................... 10
4.6 R32 GAS CHARGE....................................................................................................... 10
4.7 R32 GAS DISPOSAL .................................................................................................... 10
4.8 SAFETY RULES FOR R32 GAS TRANSPORT AND STORAGE ......................................... 10
5. INSTALLATION.................................................................................................................. 10
5.1 GENERAL.................................................................................................................... 10
5.2 TRANSPORT AND STORAGE LIMIT TEMPERATURE .................................................... 11
5.3 LIFTING AND HANDLING............................................................................................ 11
5.3.1 Liing mode ........................................................................................................... 11
5.4 POSITIONING AND MINIMUM TECHNICAL CLEARANCES..........................................12
5.5 DIMENSIONS ............................................................................................................. 14
5.5.1 Model i-32V5C Midi 0121, i-32V5C Midi 0126 ....................................................... 14
5.5.2 Model i-32V5H Midi 0121, i-32V5H Midi 0126 ...................................................... 14
5.5.3 Model i-32V5C Midi 0128, i-32V5C Midi 0132 ....................................................... 15
5.5.4 Model i-32V5H Midi 0128, i-32V5H Midi 0132 ...................................................... 15
5.6 BARYCENTRE AND DAMPERS LOCATION ................................................................... 15
5.7 ACCESSING THE INNER PARTS ................................................................................... 16
5.7.1 Costumised chapters for each series...................................................................... 16
5.8 PLUMBING CONNECTIONS ........................................................................................ 17
5.8.1 Features of the circuit water .................................................................................. 17
5.8.2 Hydraulic diagram inside the unit........................................................................... 18
5.8.3 Drainage system ..................................................................................................... 18
5.8.4 Filling / Discharge of the plant................................................................................ 19
5.8.5 Service sleeves ....................................................................................................... 20
5.9 ELECTRICAL CONNECTIONS ....................................................................................... 20
5.9.1 Access to electric panel .......................................................................................... 20
5.9.2 Power supply.......................................................................................................... 21
5.9.3 User terminal block ................................................................................................ 22
5.9.4 Control logics.......................................................................................................... 23
5.9.5 Fuses....................................................................................................................... 23
5.10 FUNCTIONAL DIAGRAMS......................................................................................... 24
5.10.1 i-32V5C Midi......................................................................................................... 24
5.10.2 i-32V5H Midi ........................................................................................................ 25
6.STARTUP .......................................................................................................................... 26
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
4
6.1 SWITCHING ON THE UNIT.......................................................................................... 26
7. INSTRUCTIONS FOR THE USER ........................................................................................ 26
8. Shutdowns for long periods ............................................................................................ 26
9. MAINTENANCE AND PERIODIC CHECKS .......................................................................... 27
9.1 CLEANING THE FINNED COIL ..................................................................................... 28
9.1.1 Cleaning the lled coil treated with the an-corrosion method ............................28
9.2 CLEANING OF EXTERNAL SURFACES .......................................................................... 29
9.3 EXTRAORDINARY MAINTENCE................................................................................... 29
10.DECOMMISSIONING...................................................................................................... 29
11.RESIDUAL RISK............................................................................................................... 30
12.TECHNICAL DATA............................................................................................................ 34
12.1 TECHICAL SHEET i-32V5C MIDI................................................................................ 34
12.2 TECHNIICAL SHEET i-32V5H MIDI ............................................................................ 35
12.3 UNIT AND AUXILIARY ELECTRICAL DATA.................................................................. 36
13.OPERATING LIMITS ........................................................................................................ 36
13.1 EVAPORATOR WATER FLOW RATE ........................................................................... 36
13.2 COLD WATER PRODUCTION (SUMMER MODE)....................................................... 36
13.3 HOT WATER PRODUCTION (SUMMER MODE)......................................................... 36
13.4 AMBIENT AIR TEMPERATURE AND SUMMERISED TABLE ........................................36
14.USER INTERFACE - CONTROLLER ................................................................................... 38
14.1 MENU ...................................................................................................................... 39
14.2 SETPOINT MENU ..................................................................................................... 39
14.3 ALARM MENU[Err] .................................................................................................. 40
15.TROUBLESHOOTING ...................................................................................................... 40
5
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
The manual of the units contains all the necessary informaon for oponal use of the equipment under safe condions for the operator.
1. PURPOSE AND CONTENTS OF THE MANUAL
This manual provides basic informaon as to the selecon, installaon, operaon and maintenance of the unit. It is intended for the operators
of the appliance and it enables them to use the equipment eciently, even if they do not have any previous specic knowledge.
personnel”.
-
The manual describes the machine at the moment it was sold. It must therefore be considered adequate with respect to the state-of-the-art in
terms of potenality, ergonomics, safety and funconality.
The company also performs technological upgrades and does not consider itself obliged to update the manuals of previous machine versions
which could even be incompable. Therefore make sure to use the supplied manual for the installed unit.
The user is recommended to follow the instrucons contained in this booklet, especially those concerning safety and roune maintenance.
HOW TO KEEP THE MANUAL
The manual has to always be kept together with the unit it refers to. It has to be stored in a safe place, away from dust and moisture. It must be
accessible to all users who shall consult it any me they are in doubt on how to operate the equipment.
The company reserves the right to modify its products and related manuals without necessarily updang previous versions of the reference
material. We also decline any responsibility for possible inaccuracies in the manual if due to prinng or transcripon errors.
The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an aachment to this manual.
The company is available to give any detailed informaon about this manual and to give informaon regarding the use and the maintenance of
its own units.
GRAPHIC SYMBOLS USED IN THE MANUAL
2. NORMATIVE REFERENCES
Units have been designed in compliance with the following direcves and harmonized standards on the safety of machinery:
EC direcves , 2014/35/UE, 2014/30/UE, 2011/65/UE, 2012/19/UE, 2014/68/UE
• Standard UNI EN 12735-1
• Standard CEI EN 60335-1, CEI EN 60335-2-40, CEI EN 55014-1, CEI EN 55014-2
• EN 50581
• EN 14276
And the following direcves, regulaons and standards on ecodesign and energy labelling::
• Community direcve 2009/125/UE and subsequent transposal
• UE Regulaon 2017/1369
• UE Regulaon 811/2013
• UE regulaon 813/2013
• EN 14511-1:2018, EN 14511-2:2018, EN 14511-3:2018, EN 14511-4:2018
• EN 14825:2018
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
6
3. PERMITTED USE
• The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect instal-
laon, seng and maintenance, improper use of the equipment, and the paral or supercial reading of the informaon contained in this
manual.
• These units are built for the heang and/or cooling of water. Any other use not expressly authorised by the manufacturer is considered
improper and therefore not allowed. The uid to be used is exclusively water or a mixture of water and glycol in case of low water tempera-
tures
-
• • All the work must be executed by skilled and qualied personnel, competent on the exisng regulaons in country of installaon The
installaon place and the water and electric circuit must be established by the plant designer and must take into account both technical
requirements as well as any applicable local laws and specic authorisaons.
• All the work must be executed by skilled and qualied personnel, competent on the exisng regulaons in country of installaon.
• This appliance is intended to be used by expert or trained operators in shops, light industry and in factories, or for commercial use by
non-expert personnel
• The appliance may be used by children at least 8 years old and by persons with reduced physical, sensory or mental capabilies or without
experience or the necessary knowledge as long as they are supervised or aer they themselves have received instrucons on the safe use
of the appliance and understand the relevant dangers. Children must not play with the appliance. The cleaning and maintenance which the
user is expected to carry out on the unit cannot be done by children without supervision.
• Direct interacon with the device by people with electrically controlled medical devices, such as pacemakers, is forbidden, as harmful in-
terference may be created. It is recommended to keep adequate distance from unit installaon, as indicated by the medical system used.
4. GENERAL SAFETY GUIDELINES
Before starng any type of operaon on the units, every operator must be perfectly familiar with the operaon of the machine and its controls
and must have read and understood all the informaon in this manual.
-
7
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
WORKERS' HEALTH AND SAFETY
The European Union has issued some direcves regarding the safety and health of workers, including:: 89/391/CEE, 89/686/CEE, 2009/104/CE,
86/188/CEE and 77/576/CEE, and subsequent amendments which every employer is obliged to follow and have followed. We observe therefore
that:
The unit works with R32 refrigerant, which is included in the list of greenhouse gases (GWP 675) which are subject to the requirements in EU
regulaon n. 517/2014 called “F-GAS” (mandatory in the European zone). Among the provisions of this regulaon, it sets forth that operators
working on systems running with greenhouse gases be in possession of a cercaon, issued or acknowledged by the competent authories,
aesng that they have passed a test authorising them to perform this work. In parcular
• Up to 3kg total refrigerant in the appliance: category 2 cercaon.
• 3 kg and more total refrigerant in the appliance: category 1 cercaon.
The gaseous form of R32 refrigerant is heavier than air and if released into the environment, most of it tends to concentrate in poorly venlated
areas. Inhaling it can cause dizziness and sensaons of suocaon and can develop lethal gas if in contact with naked ames or hot objects (see
the refrigerant’s safety data sheet).
Pay aenon to the fact that refrigerant uids can be odourless
For any operaon on the heat pump system:
-
PERSONAL PROTECTIVE EQUIPMENT
When operang and servicing the units, the following personal protecve equipment must be used:
-
-
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
8
SAFETY SIGNS
The unit features the following safety signs, wich must be complied with:
Moving parts
9
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
REFRIGERANT SAFETY DATA SHEET
Name: R32
HAZARDS IDENTIFICATION
Main hazards:
Specifi c hazards:
FIRST AID MEASURES
General informa� on:
Inhala� on:
Eye contact:
Skin contact:
FIRE FIGHTING MEASURES
Ex� nguishing media:
Specifi c hazards:
Specifi c methods:
ACCIDENTAL RELEASE MEASURES
Personal precau� ons:
Environmental precau� ons:
Cleaning methods:
HANDLING AND STORAGE
Handling:
technical measures/precau� ons:
Advice for safe use:
Storage:
EXPOSURE CONTROLS/PERSONAL PROTECTION
Control parameters:
Respiratory protec� on:
Eye protec� on:
Hand protec� on:
Hygienic measures:
PHYSICAL AND CHIMICAL PROPERTIES
Colour:
Odour:
Boiling point:
Flash point:
Rela� ve gas density (air=1)
Rela� ve liquid density (water=1)
Solubility in water:
STABILITY AND REACTIVITY
Stability:
Materials to avoid:
Decomposi� on products
hazardous:
TOXICOLOGICAL INFORMATION
Acute toxicity:
Local eff ects:
Long term toxicity:
ENVIRONMENTAL INFORMATION
Global warming poten� al
GWP (R744=1):
Ozone Deple� on Poten� al ODP
(R11=1):
Disposal considera� on:
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
10
SPECIFIC R32 GAS WARNINGS
The R32 refrigerant gas:
• is odourless;
• is ammable, but only if there are naked ame;
• it may cause an explosion, but only if a given concentraon in air is reached.
It is a good pracce to follow these guidelines:
• do not smoke near the unit;
• ax a no smoking sign near the unit;
• keep the premises where the unit is installed properly aerated;
• do not pierce or burn the unit;
• do not place the unit near ignion sources, such as naked ames, electric heaters etc.;
• every extraordinary maintenance or repair on the unit must be performed by skilled technicians or qualied personnel;
• a gas leak test must be performed aer installaon.
R32 GAS CHARGE
• ensure the R32 is not contaminated by any other types of refrigerant;
• keep the gas cylinder in an upright posion when charging;
• apply the appropriate label on the unit aer charging;
• do not charge more refrigerant gas than needed
• when charging is completed, perform leak tests before the operang test
• once all the above operaons have been completed, a second leak test should be performed
R32 GAS DISPOSAL
• do not dispose of the gas in areas at risk of explosive mixtures forming with air The gas should be disposed of in an appropriate torch with
backring stop device. Contact the supplier should you require operang instrucons.
SAFETY RULES FOR R32 GAS TRANSPORT AND STORAGE
Before opening the unit’s packaging, ensure there are no gas leaks in the environment with an appropriate gas detector. Ensure there are no re
ignion sources near the unit.
No smoking is allowed near the unit.
Transport and storage must be performed in accordance with the naonal regulaons in force. Specically, according to ADR provisions, the total
maximum quanty by transport unit in terms of net mass for ammable gases is 333 kg.
5. INSTALLATION
GENERAL
When installing or intervening on the chiller unit, it is necessary to strictly follow the rules listed in this manual, to observe all the indicaons on
the unit and however to take all possible precauons. Failure to comply with the rules reported on this manual can create dangerous situaons
The company must be informed, within 8 days, of the extent of the damage. The Customer should prepare a wrien statement of any severe
damage.
11
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
Do not perforate or burn
TRANSPORT AND STORAGE LIMIT TEMPERATURE
Minimum storage temperature [°C] -10°C
Maximum storage temperature [°C] +50°C
LIFTING AND HANDLING
The handling must be performed by qualied personnel, properly equipped with appropriate tools to the weight and the encumbrance of the
unit, in compliance with safety regulaons of accident prevenng.
It is recommended:
1. check the weight on unit technical label or on table of tecnical data
2. check moving the unit there are no disconnected paths, ramps, steps, doors that could aect the movement and damage the unit;
3. make sure the unit stands while moving;
4. prima di movimentare l’unità vericare che le arezzature siano idonee a sollevare e a preservare l’integrità dell’unità;
5. check the unit center of gravity and align it with liing point;
6. perform liing only by one of the listed procedures;
7. Before starng handling make sure the unit is in stable equilibrium
Following liing moes are allowed:
• - forkli truck
• - ropes/chains + sling bar
Make sure to tension the liing ropes gradually and check their correct posioning.
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
12
Liing through forkli truck
Liing through ropes
POSITIONING AND MINIMUM TECHNICAL CLEARANCES
All models of the range are designed and constructed for outdoor installaons.
It is advisable to create an adequately sized support base for the unit. The units transmit a small amount of vibraons to the ground: it is none-
theless advisable to apply vibraon dampers between the base frame and support surface.
SUSPENDED INSTALLATION IS FORBIDDEN.
-
-
It is very important to avoid recirculaon between intake and delivery air, so as not to downgrade performance of the unit or even to interrupt
its normal operaon.
In this case,it is absolutely necessary to guarantee the minimum serice spaces listed below.
13
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
A1
A
A2
C
B2
B
B1
MODEL A1 A2 B1 B2
0126
0126
mm 1500 400 400 700
0132
0132
mm 1500 400 400 700
Do not obstruct or cover the venlaon openings.
For strong wind installaon place refer to the classicaon of the area according to the Beaufort table. If the value is > 7 (strong
wind, average wind speed = 13,9-17,1 m/s) it is strictly necessary to keep the fan always powered, thus prevenng involuntary
rotaon of the same.
In the event of side-by-side units, the minimum Lmin distance between them is
700 mm.
Lmin
Covering with canopies or placing near plants or walls shuld be avoided to
prevent air circulaon.
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
14
In the event of winds stronger then 13,9-17,1 m/s (strong wind according to the
beaufort scale) the use of wind barriers is recommended.
We always invite you to make an environmental impact assessment based on the power and sound pressure data shown in chapter "Technical
data" and the sound emission limits based on the installaon area of the unit , with reference to the DPCM of 14/11/1997. An assessment must
also be made if the unit is installed in the proximity of workers according to D. LGS. 81/2008 Art. 189 and following.
DIMENSIONS
788
58
85
A
C
675
B
Dimensions and weights
Model
A -.Length mm 1600
B - Depth mm 680
C - Height mm 1315
Shipping weight kg 215
kg 205
IN/OUT: 1”M G
E: power supply input
Dimensions and weights
Model
A - Lenght mm 1600
15
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
Dimensions and weights
Model
B - Depht mm 680
C - Height mm 1315
Shipping weight kg 250
kg 240
IN/OUT: 1”M G
E: power supply input
Dimensions and weights
Model
A - Depth mm 1600
B - Lenght mm 680
C - Height mm 1315
Shipping weights kg 225
kg 215
IN/OUT: 1”1/4 M G
E: power supply input
Dimensions and weights
Model
A - Lenght mm 1600
B - Depth mm 680
C - Height mm 1315
Shippng weights kg 265
kg 255
IN/OUT: 1”1/4 M G
E: power supply input
BARYCENTRE AND DAMPERS LOCATION
In the following tables, we report the posion of the barycentre of each machine, with reference to the dimensions shown in the image.
P1 P2
P3 P4
B
A
Xb
Yb
Models Shipping
weights [kg]
weights [kg] A [mm] B [mm] Xb [mm] Yb [mm]
i-32V5C Midi 0121,
0126 215 205 640 1600 973 310
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
16
Models Shipping
weights [kg]
weights [kg] A [mm] B [mm] Xb [mm] Yb [mm]
i-32V5H Midi 0121,
0126 250 240 640 1600 949 322
i-32V5C Midi 0128,
0132 225 215 640 1600 970 332
i-32V5H Midi 0128,
0132 265 255 640 1600 912 325
The ideal installaon posions of the dampers for each type of machine are shown in the below images.
P1 P2
P3 P4
329 309
ACCESSING THE INNER PARTS
[ 1 ] [ 2 ]
A
B
1. Remove the two access panels to the components compartment by removing the screws as shown in gure 1.
2. To access the power supply terminal block, remove panel A by unscrewing the screws as shown in gure 2.
3. To access the user terminal block, remove panel B by unscrewing the screws as shown in gure 2.
4. Insert the cables in the cableshot provided on the rear side of the machine to connect them to the system.
5. Close the electrical panel and the access panels to the machine components compartment using the screws previously removed.
17
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
PLUMBING CONNECTIONS
The plumbing connecons must be made in accordance with naonal and/or local regulaons; pipes can be made of steel, galvanised steel or
PVC. Pipes must be accurately sized according to the nominal water ow rate of the unit and the pressure drops of the water circuit. All pipes
must be insulated with closed-cell material of adequate thickness. The chiller must be connected to the pipes using new exible joints, not re-
used ones. The water circuit should include the following components:
• Well thermometers to monitor the circuit’s temperature..
• Manual gate valves to isolate the chiller from the water circuit.
• Metal Y lter and dirt separator (installed on the return pipe) with metal mesh no larger than 1 mm. (obligatory to mantain the validity of
the guarantee).
• Loading group and exhaust valve where necessary.
-
-
To guarantee correct operaon of the unit, the water must be appropriately ltered (see the instrucons at the start of this paragraph) and there
must be only a minimum amount of dissolved substances. The maximum allowed values are shown below
MAXIMUM CHEMICAL-PHYSICAL PROPERTIES ALLOWED FOR THE CIRCUIT WATER
PH 7,5 - 9
Electrical conducvity 100 - 500 μS/cm
Total hardness 4,5 – 8,5 dH
Temperature ˂ 65°C
Oxygen content ˂ 0,1 ppm
Max glycol quanty 40 %
Phosphates (PO4) ˂ 2ppm
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
18
MAXIMUM CHEMICAL-PHYSICAL PROPERTIES ALLOWED FOR THE CIRCUIT WATER
Manganese (Mn) < 0,05 ppm
Iron (Fe) < 0,3 ppm
Alkalinity (HCO3) 70 – 300 ppm
Chloride ions (Cl-) < 50 ppm
Sulphate ions (SO4) < 50 ppm
Sulphide ions (S) None
Ammonium ions (NH4) None
Silica (SiO2) < 30 ppm
Herein below the hydraulic diagrams for connecon to the unit
W-IN
W-OUT
KA1
DV1
RV1
FC1
AV1
TE
IN1
P1
EV1
TE
OUT1
LEGEND
EV 1PLATE HEAT EXCHANGER W-IN WATER INPUT
DV 1 DISCHARGE VALVE W-OUT WATER OUTPUT
RV 1RELIEF VALVE P 1ELECTRONIC CIRCULATOR
TE IN 1WATER INLET TEMPERATURE PROBE-
SONDA AV 1 AUTOMATIC AIR VENT VALVE
TE OUT 1USER OUTLET WATER TEMPERATURE
PROBE FC 1FLOW SWITCH
--- Accessorio installato a bordo
In each unit a safety valve with 6 bar opening pressure included all the same
The units all of them adopt drainage holes on the basement for the condensate draining which can leach from the pipes of hydraulic and refrig-
erant circuits, and to discharge the generated water during defrosng cycles.
19
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
TO ALLOW ICE FORMATION UNDER THE UNIT WITHOUT DAMAGING IT BY FREEZING.
-
When it is required to top up the circuit or to adapt the glycol level, please use the service valve. Unscrew
and remove the cap from the service valve (A) and connect a 14 or 12 mm pipe (inside diameter - check the
valve model installed on your unit), connected to the water mains, to the hose connector and then drain the
circuit by unscrewing the specic ring nut (B). Aer the end of the operaon, reghten the ring nut (B) and
screw the cap back on (A).In any case it is recommended to use an external valve to ll the system wich can
be set up by the installer. B
A
If the unit must be completely drained,rst close the manual inlet and outlet shuers (not supplied) and then disconnect the pipes on the water
inlet and outlet so that the liquid in the unit can drain (to make this operaon easier, it is advisable to install two external drain cocks between
the unit and the manual shuers on the water inlet and outlet).
i-32V5 MIDIChillers and Inverter Air/Water heat pumps with axial fan
20
The unit is ed with an air venng valve to automacally remove air that has built up in the circuit, prevent-
ing undesirable eects such as premature corrosion and wear, lower performance and low exchange output.
The device also features a safety funcon because, in the event of exchanger breakdown, it allows the refrig-
erant gas to escape outside, prevenng it fro being conveyed to the internal terminals.
The valve can be kept in a closed posion by closing the plug on the drain; by loosening the plug, the valve
remains in open posion and air is discharged automacally.
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ELECTRICAL CONNECTIONS
Check that the power supply matches the unit’s electric nominal data (voltage, phases, frequency) displayed on the rang plate on the unit’s
side panel. The electric power connecons must be made in accordance to the wiring diagram enclosed with the unit and in conformity with
naonal and internaonal standards (providing general circuit breaker, residual current devices for each line, proper earthing of the plant, etc.).
-
-
The following is the procedure for accessing the electric panel.
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7
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