MAXA i-32V5H MIDI 0121 Service manual

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R32
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


     



Model

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
2
00 01-2021   
Rev Date Compiled Approved Note
Code Serie
BTE01040101001.00_i-32V5 Midi_EN Chiller and Inverter Air/Water heat pumps with axial fan

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
3
Contents
1.DESCRIPTION OF UNIT AND TECHNICAL SPECIFICATIONS ................................................ 5
1.1 FRAMEWORK............................................................................................................... 5
1.2 COMPRESSORS ............................................................................................................ 5
1.3 AIR SIDE HEAT EXCHANGER ......................................................................................... 5
1.4 UTILITY SIDE HEAT EXCHANGER .................................................................................. 5
1.5 FAN .............................................................................................................................. 5
1.6 COOLING CIRCUIT........................................................................................................ 5
1.7 ELECTRICAL AND CONTROL PANEL .............................................................................. 6
1.8 CONTROL AND PROTECTION DEVICES......................................................................... 7
1.9 HYDRAULIC CYRCUIT ................................................................................................... 7
2. DESCRIPTION OF VERSIONS AND ACCESSORIES ................................................................ 7
2.1 VERSIONS .................................................................................................................... 7
2.2 LIST OF ACCESSORIES .................................................................................................. 8
2.3 DESCRIPTION OF ACCESSORIES ................................................................................... 9
2.3.1 Factory-ed accessories......................................................................................... 9
2.3.2 Accessories supplied separately............................................................................... 9
3.INSTALLATION.................................................................................................................. 11
3.1 UNIT DIMENSIONS, HYDRAULIC CONNECTIONS, WEIGHTS AND CENTRE OF GRAVITY
POSITION............................................................................................................................ 11
3.1.1 Net dimensions and with packaging ...................................................................... 11
3.1.2 Detail of connecons and locaon ........................................................................ 12
3.1.3 Weights .................................................................................................................. 12
3.1.4 Locaon of the centre of gravity and vibraons dampers......................................12
3.2 TECHNICAL SERVICE AREAS ....................................................................................... 13
3.3 HYDRAULIC CIRCUIT .................................................................................................. 15
3.3.1 System water specicaons ................................................................................... 16
3.3.2 Typical hydraulic scheme ....................................................................................... 16
3.3.3 Hydraulic diagram inside the unit .......................................................................... 17
3.3.4 Minimum water content and hydraulic circuit volumes......................................... 18
3.3.5 Condensate drainage system.................................................................................. 18
3.3.6 System charging/discharging.................................................................................. 19
3.3.7 Air vent valve.......................................................................................................... 19
4.TECHNICAL DATA ............................................................................................................. 20
4.1 HEAT PUMP DATA SHEET ........................................................................................... 20
4.2 DATA SHEET UNIT WITH DESUPERHEATER ................................................................ 21
4.3 UNIT AND AUXILIARY ELECTRICAL DATA.................................................................... 22
5. CORRECTIVE FACTORS ..................................................................................................... 22
5.1 CORRECTION FACTORS FOR USE OF WATER-GLYCOLE MIXTURE...............................22
5.2 SCALING CORRECTION FACTOR ................................................................................. 22
5.3 CaLIBRATIONS AND PROTECTIONS CONTROL............................................................ 22
5.4 CORRECTION FACTORS DEPENDING ON ALTITUDE ................................................... 23
6. HYDRONIC GROUP DATA DATI DEL GRUPPO IDRONICO .................................................. 24
6.1 USEFUL HEAD ............................................................................................................ 24
6.2 PRESSURE DROP Y-FILTER ACCESSORIES 3-WAY VALVE ............................................. 24

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
4
6.3 CIRCULATOR/PUMP CURVES ..................................................................................... 25
7. SOUND EMISSIONS.......................................................................................................... 26
7.1 POWER AND SOUND PRESSURE STANDARD ............................................................. 26
8. OPERATING LIMITS .......................................................................................................... 27
8.1 WATER FLOW RATE AT THE EVAPORATOR ................................................................. 27
8.2 CHILLER WATER PRODUCTION (SUMMER OPERATION) ............................................27
8.3 HOT WATER PRODUCTION (WINTER OPERATION) .................................................... 27
8.4 AMBIENT AIR TEMPERATURE AND SUMMARY TABLE ............................................... 27
9. PERFORMANCE TABLES ................................................................................................... 29
9.1 HEATING .................................................................................................................... 29
9.2 COOLING.................................................................................................................... 30
9.3 SANITARY ................................................................................................................... 31
9.4 DATA FOR ENERGY CERTIFICATION OF BUILDINGS ACCORDING TO UNI/TS 11300-4 FOR
HEAT PUMPS....................................................................................................................... 32
9.4.1 Model i-32V5H MIDI 0121...................................................................................... 32
9.4.2 Model i-32V5H MIDI 0126...................................................................................... 33
9.4.3 Model i-32V5H MIDI 0128...................................................................................... 33
9.4.4 Model i-32V5H MIDI 0132...................................................................................... 34
9.5 EER VALUES FOR CALCULATING THE ENERGY PERFORMANCE OF BUILDINGS ACCORD-
ING TO UNI/TS 11300-3...................................................................................................... 36
9.5.1 Model i-32V5H MIDI 0121...................................................................................... 36
9.5.2 Model i-32V5H MIDI 0126...................................................................................... 36
9.5.3 Model i-32V5H MIDI 0128...................................................................................... 37
9.5.4 Model i-32V5H MIDI 0132...................................................................................... 37
10.REFRIGERANT SAFETY SHEET......................................................................................... 38

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
5
1. DESCRIPTION OF UNIT AND TECHNICAL SPECIFICATIONS
The heat pumps in this series were designed for residenal and commercial applicaons. They are extremely versale and are designed for
heat pump operaon with hot water producon for space heang and sanitary use at a temperature of 60°C. The use of the brushless inverter
compressor technology, combined with the electronic expansion valve, the circulator and the variable speed fan, opmise the consumpon and
operang eciency of the cooling components.
FRAMEWORK
Structure suitable for outdoor installaon consisng of thick proles made of hot galvanised sheet steel and painted with polyester powder, co-
lour RAL 7035 textured, resistant to atmospheric agents. The removable panels allow maintenance inside the refrigeraon and hydraulic circuits.
COMPRESSORS
Twin rotary hermec inverter controlled DC compressors, specically designed to operate with R32, equipped with thermal protecon and
mounted on rubber vibraon dampers.
This component is installed in a compartment separate from the air ow to reduce noise and is equipped with a crankcase heater that prevents
the diluon of the oil by the refrigerant, ensuring correct lubricaon and reducing wear on moving parts.
The compressors can be inspected by removing the side and front panels of the unit, allowing maintenance even when the unit is running.
AIR SIDE HEAT EXCHANGER
The air exchangers are made of copper tubes and aluminium ns.The pipes are mechanically expanded in the alluminium ns to increase the
heat exchange factor.The geometry of these exchangers allows a low value of pressure losses on the air side and therefore the possibility of using
fans with a low number of revoluons (with a consequent reducon in machine noise).
On request, the coils can have surface treatments to allow greater resistance to corrosion or be made enrely of copper with a brass structure.
UTILITY SIDE HEAT EXCHANGER
Brazed plate heat exchanger made of AISI 304 stainless steel, covered with black exible closed-cell elastomeric foam; thickness 9 mm, thermal
conducvity (λ)≤0.036 W/mK (at air +20°C). A ow switch installed on the water side ensures the presence of water ow and, together with the
protecon probe, prevents the formaon of ice inside.
The exchanger can be equipped with an electric anfreeze heater (oponal accessory KA1)
FAN
The fans are axial type with airfoil blades They are stacally and dynamically balanced and supplied complete with protecon grille and air inlet
and outlet with double ared prole, specially shaped to increase eciency and reduce noise. The electric motor used is driven in modulaon
with brushless EC motor, directly coupled, and equipped with integrated thermal protecon. The motor has an IP 54 protecon rang according
to CEI EN 60529.
COOLING CIRCUIT
The cooling circuit is made of copper piping, brazed and assembled in the factory in accordance with EN 13134.The components present are:
• Filter drier with 100% molecular sieve cartridge;
• Shut-o valve on the liquid line;
• Liquid ow and moisture indicator;
• Electronic expansive valve;
• Charge connecons;
• High-pressure safety pressure switches;
• High and low pressure transducers;
• Reverse cycle valve;
• Receiver and liquid separator.
The sucon line is thermally insulated with exible, closed-cell elastomeric foam.
Each unit is pressure tested to check for leaks and is supplied complete with a refrigerant charge opmised for operaon.

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
6
RD/RS
RD
PSH1
RS
SL1
RS/RD
PEH
TC1
SG1
RL
RL
RL
TE
SD1
SV
PED
TR1
SV
F1
SBSV 1
SB
SV
RL
SV
SV
RL
RS/RD
RS
SB
RL
RS
RL
CV1
RL
RL
CV4
AF1
RL
RL
LR1
CO/EV1
INVC1
HC1
P-DS1
TE
PD1
DS1
SV
BV1
TE
DS 1
DHW-OUT
DHW-IN
TE
EXT1
SV
SV
CV2
CV3
W-IN
W-OUT
KA1
EV1
TE
DT1
EEV1
LEGEND
INVC 1   1
 1  1
 1  
 1  1
   1
1  1
HC 1   1
 1  1
   1
   1
   1
   1
   1
 1  1
 1  
 1  
CV  W-IN 
 1  
--- 
ELECTRICAL AND CONTROL PANEL
Completely manufactured and wired in accordance with IEC 60335-2-40.
The power secon includes:
• Isolaon transformer for control power supply;
• Thermal protecon fuses for compressor driver and EC fan;
• Automac switch for compressor protecon (oponal);
• Driver for modulang compressor control;

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
7
• Phase sequence control relays;
• Phase sequence control relay with minimum/maximum voltage seng (oponal);
• Thermostacally controlled venlaon inside the electrical panel;
• GI module - system management. (oponal or for versions that require it).
The control secon includes:
• Interface terminal with alphanumeric display;
• Display funcon for set values, analogue inputs, fault codes, alarm history and parameter index;
• Key on/o and alarm reset;
• Key combinaons to force defrost and force pump to maximum speed;
• Management of unit start-up from local or remote;
• ModBus connecvity (oponal);
• BMS connecvity via converter
• BMS connecvity (ModBus/Bacnet/Knx/Lonworks) - oponal.
• BMS connecvity (ModBus/Bacnet/Knx/Lonworks) - oponal.
CONTROL AND PROTECTION DEVICES
All units are equipped as standard with the following control and protecon devices: inlet water temperature probe installed on the water return
pipe from the system, outlet water temperature probe that also funcons as an an-freeze probe installed on the water supply pipe to the sys-
tem, high pressure transducer, low pressure transducer, compressor sucon and discharge temperature probes, compressor thermal protecon,
fan thermal protecon, ow switch on the water side to protect the evaporator, high pressure switch.
HYDRAULIC CYRCUIT
The units in the series are supplied with a built-in hydraulic circuit that includes: high-eciency brushless motor modulang circulator (EEI≤0.23),
suitable for the use of chilled water and directly controlled by the on-board control, plate heat exchanger, protecon ow switch, safety valve
(6 bar) to be connected to a collecon system and manual air vent valve.
2. DESCRIPTION OF VERSIONS AND ACCESSORIES
VERSIONS
The available versions are:
i-32V5H Midi - heat pump standard version
i-32V5H-DS Midi - heat pump with superheater
The unit with desuperheater includes the addion of a brazed plate type heat exchanger made of AISI 316 stainless steel, factory insulated using
closed cell material. This version allows to recover about 20% of the condensing heat otherwise lost and to use it to feed the aer-heang water
coils of an AHU or for a hot water ywheel or for any other process use.

i-32V5H-BT Midi - chiller BT version (for low water temperature)
The BT version of the unit allows the operang range of the unit to be extended by cooling the water supplied to the user down to -8°C. In this
case, a mixture of water and glycol is used.

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
8
Order code
0110820#
57 Reversible heat
pump
55 BT version on
heat pump
24
0121
25
0126
26
0128
27
0132
0
2 pipes
3Desuperheater
circuit
0 Without injection
0
No silencing
0
Without antifreeze
kit
1 With antifreeze kit
0
Without GI/GI2*
1With GI/GI2 plant
operator
2
Modbus (CM)*
3 Modbus (CM) +GI
0
Standard
2
Thermomagnetic
circuit breakers
(IM)
0
No one
8
Battery with
treatment
Silverline (TR2)
0
No one
01
Standard
Code
EL3
TR
AC1
Unit version Thermal capacity Water pipe configuration Antifreeze kit accessory
System management
module
RV
CT1
TA
KA
GI
MC
Injection (LT) Silencing
IV
SIL
Electrical variants
Accessory - battery
treatment Accessory 1
* Not valid if TA=3
LIST OF ACCESSORIES
Available accessories are indicated below:
 Accessory Standard 
Supplied loose/

delivery
 x x
 x x
 x x
 x x
 x x
 x x
 x x

tank x x
 x x
 x x
 x x
 x x
 x x
 x x





x x
 x x

 x x
 x x
 x x
 x x
 x x
 x x
 x x
 x x
 x x
 x x

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
9
DESCRIPTION OF ACCESSORIES


nned pack heat exchanger with copper tubes and aluminium ns, treated with a special polyurethane-based paint for corrosion protecon.
The treatment makes the coil exible to resist thermal expansion and contracon, mechanically resistant, UV protected and dirt repellent. The
treatment guarantees protecon of the baeries in praccally all environmental condions: from marine to rural environments, from industrial
to urban areas.
For specic cleaning instrucons for baeries treated in this way, please refer to the chapter in the user-installer manual entled "Cleaning of
nned baeries treated with the corrosion protecon method".
The treatment resists 6000 h according to ASTM B117.
Electronic expansion valve
expansion valve, designed for the control and connuous regulaon of the amount of refrigerant fed into the evaporator. Changes in thermal
load may be followed quickly, so as to achieve opmised consumpon.
Electronic circulator
standard of the unit, electronically controlled and high eency.
Water-side safety valve
Valve installed on the hydraulic circuit to control overpressure ola installata sul circuito idraulico per controllare le sovrapressioni – taratura 6 bar

device that controls and signals the circulaon of water in the plate heat exchanger. This component is of fundamental importance because it
shuts down the unit and makes it safe by prevenng the formaon of ice.

metal mesh to prevent the intrusion of foreign bodies inside the coil and to protect the coil from accidental contact with things or people.

electric resistance located on the front face of the plate heat exchanger, which is acvated when the temperature of the water inside the ex-
changer falls below +4°C. For BT units this value must be set according to the percentage of glycol in the system and the freezing point of the
mixture. An electrical resistance is also placed on the base of the unit and is acvated when the outside temperature falls below the set level.

contact on the terminal board that allows the unit to be switched on and o.
Dynamic set point
the regulator allows the set-point to be modied by adding a value according to the temperature of the external air probe.

allows the management of the following funcons:
• Compressor ON/OFF signalling
• General alarm signalling/Machine block signalling

signals the presence of all three phases in the correct sequence.

signals if all three phases are present in the correct sequence and if all three phase-to-phase voltages are within the set limits. The maximum and
minimum voltage thresholds can be set separately.

Overcurrent circuit breaker applied upstream of electrical components, protects components from failures caused by current peaks.
Accessories supplied separately
Y-Filter
contains a stainless steel mesh sieve (500 μm ltraon) that collects solids in the water. Filtraon prevents clogging and/or
damage to devices installed downstream of the lter.

temperature probe to be placed inside a thermal ywheel for the instantaneous producon of domesc hot water. The DHW storage remote
probe thermoregulates the heat pump both during compressor start-up and shutdown.
The probe cannot be connected in the case of DS version

system temperature probe to be posioned inside an external tank. The remote system probe thermoregulates the heat pump only during the
compressor start-up phase; shutdown is managed by the probe on the unit's delivery side.

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
10


Motorised three-way sphere valve DN (1”1/4) Kvs 20,8, complete with servocontrol.
11/4"G
11/4"G
11/4"G
64
167
118
47
104
130
MIN.
Maximum operang pressure : 10 bar
Maximum dierenal pressure : Δp = 6 bar
Fluid working temperature : 0 ÷ + 100 °C
Usable uid: Water or compable liquids with TEFLON and EPDM seals
Pressure drop : almost zero

are designed to prevent the transmission of vibraons to the structure; they are to be mounted under the unit in special
holes.
The opmum recommended load capacies, depending on the size of the machine, are given below
Model i-32V5H Midi 
 63



accessory allowing connecon of the unit to external controllers via serial cable with RS-485 electrical standard and ModBus RTU protocol.
Fan silent mode
Digital input that can be acvated by an external contact to reduce the sound power level by acng on the venlaon. The mode is parcularly
suitable during night operaon. Below are the decreases in capacity and sound power level when the "fan silent mode" funcon is acve.
The reducon refers to the test condion (3) of the technical data tables; the value is determined on the basis of measurements carried out in
accordance with UNI EN ISO 9614-2, in compliance with the requirements of Eurovent cercaon.
Model i-32V5H Midi  
0121  -1
0126  -1
0128  -1
0132  -1
Serial converter USB RS485 (ISK)
interface device capable of reading and wring control registers via the RS485 standard and converng it to a USB port that can be connected
to any supervisory system.

device that enables conversion between Modbus RTU and BACnet/ Lonworks, allowing the unit control to be congured as a normal device in
the BACnet / Lonworks network.

device that enables conversion between Modbus RTU and BACnet/ Konnex, allowing the unit control to be congured as a normal device in the
BACnet/ Konnex network.
7-touch/HUB (Cloud/App)
is a compact system consisng of an ultra-thin touch panel, including a temperature control unit and gateway for remote control from a PC (
through the " my.maxa.it" portal) or smartphone (through the app that can be downloaded from the "My Maxa" online store). It allows winter
and summer climate control.

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
11
Remote display Touch screen (Hi-T2)
touch screen remote control for centralised management of a chiller/heat pump network, it integrates humidity and tem-
perature sensors for thermo-hygrometric analysis of the environment and management of the double set point for under-
oor radiant systems using a dehumidicaon system.
Remote control (i-Cr)
Modbus remote control with negave LCD and capacive keys. The device is to be used as a remote machine keyboard with
local temperature detecon, replicang the funconality of the on-board control.
3. INSTALLATION
All handling, installaon and maintenance operaons must be carried out by QUALIFIED PERSONNEL only. Before any operaon on the unit,
make sure that the power supply is disconnected. The minimum permissible temperature for storing the units is 5°C.
UNIT DIMENSIONS, HYDRAULIC CONNECTIONS, WEIGHTS AND CENTRE OF GRAVITY
POSITION

Model i-32V5H Midi   
0121 1600 680 1315
0126 1600 680 1315
0128 1600 680 1315
0132 1600 680 1315
   
0121 1660 700 1412
0126 1660 700 1412
0128 1660 700 1412
0132 1660 700 1412
E
788
58
85
A
C
IN OUT
675
B

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
12

Model i-32V5C Midi 
IN/OUT
0121 1"M
0126 1"M
0128 1"1/4 M
0132 1"1/4 M
E
788
58
85
IN OUT

Model i-32V5H Midi  
0121 250 240
0126 250 240
0128 265 255
0132 265 255

The posion of the centre of gravity of each machine is shown in the tables, with reference to the dimensions shown in the image.
P1 P2
P3 P4
B
A
Xb
Yb
Model i-32V5H
Midi



    
 250 240 680 1600 949 322
 265 255 680 1600 912 325

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
13
The posions provided for the installaon of vibraon dampers for each type of machine are shown in the pictures below.
P1 P2
P3 P4
329 309
TECHNICAL SERVICE AREAS
All models in the series are designed and constructed for outdoor installaon.
It is good pracce to create a support slab of adequate size for the unit. The units transmit a low level of vibraon to the ground: it is nevertheless
advisable to place an-vibraon mounts between the base frame and the support surface.
SUSPENDED INSTALLATION IS PROHIBITED








unit.




roofs,shelters and similar.
It is very important to avoid recirculaon phenomena between sucon and delivery, otherwise the performance of the unit will deteriorate or
even interrupt normal operaon.
In this respect it is absolutely necessary to guarantee the minimum service spaces indicated below.

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
14
A1
A
A2
C
B2
B
B1
MODEL A1 A2 B1 B2
i-32V5H Midi 0121,
0126 mm 1500 400 400 700
i-32V5H Midi 0128,
0132 mm 1500 400 400 700





Lmin



i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
15
-

It is always advisable to make an environmental impact assessment based on the power and sound pressure data given in the technical data
chapter and the sound emission limits based on the installaon 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 vicinity of workers, according to D. LGS. 81/2008 Art. 189 and following.
HYDRAULIC CIRCUIT
The hydraulic connecons must be made in accordance with naonal or local regulaons; the piping can be made of steel, galvanised steel or
PVC. The pipes must be carefully sized according to the nominal water ow rate of the unit and the pressure drops of the hydraulic circuit. All
hydraulic connecons must be insulated using closed-cell material of adequate thickness. The chiller must be connected to the piping using new,
non-reused exible couplings. It is recommended to install the following components in the hydraulic circuit:
• Thermometers to measure the temperature in the circuit
• Manual gate valves to isolate the chiller from the hydraulic circuit.
• Y-shaped metal lter and a dirt separator (installed on the return pipe from the system) with a metal mesh of no more than 1 mm (obligatory
to maintain the validity of the guarantee).
• Charging unit and discharge valve where necessary











-




i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
16

To ensure that the unit funcons properly, the water must be adequately ltered (see the beginning of this secon) and the quanty of dissolved
substances must be minimal. The maximum permied values are listed below.
MAXIMUM PERMITTED CHEMICAL AND PHYSICAL CHARACTERISTICS OF THE SYSTEM WATER
 
 
Total hardness 
Temperature 
 
 40 %
 
 
 
 
 < 50 ppm
 < 50 ppm
 No one
 No one
 < 30 ppm
Typical hydraulic scheme
The following is a recommended connecon diagram
P
T
T
M M
1
7
from water supply
to sanitary users
T
T
P
ST
M
2
3
4
5
6
LEGEND
1 5
2 6
3-
 7
4

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
17
P
T
T
M M
7
from water supply
to sanitary users
T
P
ST
M
2
3
4
6
T
T
T
1
5
LEGEND
1 5
2 6
3-
 7
4

The hydraulic diagram for connecon to the unit is shown below
W-IN
W-OUT
KA1
DV1
RV1
FC1
AV1
TE
IN1
P1
EV1
TE
OUT1

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
18
LEGEND
 1 W-IN 
DV 1   
 1  1
 1 AV 1 
 1  1
--- 
In any case, each unit includes a safety valve with 6 bar opening pressure.


Minimum water content and hydraulic circuit volumes
The table shows the minimum recommended plant water content for units The volume of the hydraulic circuit is also indicated.If this volume is
less than the recommended minimum water content, it must be ensured that the pipes connecng to the unit have sucient capacity to com-
pensate for this dierence. The addional volume required is shown in the table.
Model i-32V5H Midi 0121 0126 0128 0132

content[l] 110 110 110 110
    

As the pipes are well insulated, the producon of condensaon is minimal and does not lead to the accumulaon of water inside the refriger-
aon compartment. All heat pumps are equipped with a hole in the basement for draining condensaon, which is abundant especially in the
post-defrost phase.
FOR HEAT PUMP UNITS, IN PARTICULARLY RIGID CLIMATES, THE INSTALLATION OF THE KA ACCESSORY IS RECOMMENDED, WHICH PREVENTS
THE FORMATION OF ICE ON THE BASEMENT.




i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
19













 B
A
If the unit must be completely drained, rst close the manual inlet and outlet shuers (not supplied) and then disconnect the pipes externally
arranged on the water inlet and outlet in order to drain the liquid contained in the unit (to make the operaon easier, it is advisable to install two
external drain cocks on the water inlet and outlet interposed between the unit and the manual shuers).
Air vent valve
È possibile lasciare la valvola in posizione chiusa chiudendo il tappino sullo scarico; allentando il tappino la







If you noce a water leak, you must replace the component by unscrewing it with a spanner, as
shown in the image below.

i-32V5H MIDI Chiller and Inverter Air/Water heat pumps with axial fan
20
4. TECHNICAL DATA
HEAT PUMP DATA SHEET
TECHNICAL CHARACTERISTICS Unit i-32V5H MIDI
0121 0126 0128 0132

 kW 







 kW    
 W/W    
 kW 







 kW    
 W/W    
 W/W    
     
     

 kW 







 kW    
 W/W    
 kW 







 kW    
 W/W    
 W/W    
     
     
 Classe    
Compressor
 
Number of compressors 1 1 1 1
    
     
 1111
Chiller
    
     
 ton    
 bar    
 bar    
Outdoor area
fans
 
Number 1 1 1 2
 kW    
Maximum power input kW    
Maximum current input A    
 m3/h 10769 10847 12209 13202
Internal ex-

 
 1111
Water content     
Hydraulic circuit
     
     

 bar 6 6 6 6
 inch 1"M 1"M 1"1/4 M 1"1/4 M
  110 110 110 110
Maximum circulator power kW    
 A   
    
Sound emissions   71 73 75 77
Electrical data
 
Maximum power input kW    
Maximum current input A    
 kW    
 A   
Performance referring to the following condions, according to standard 14511:2018:
(1) Cooling: outdoor air temperature 35°C; in/out water temperature 12/7°C.