Mitsubishi Electric i-MTR2-G02-M0 Product guide

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(The photo of the unit is indicative and may vary depending on the model)
i-MTR2-G02-M0
11-16 kW
FULL INVERTER direct expansion air conditioners. Ideal for metrological rooms and
laboratories, combined with remote air-cooled condenser.
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Data Book
I-MTR2-G02-M0_0521_EN
Elca Engine ver.
HERMETIC BLCD INVERTER
COMPRESSORS
AIR DELIVERY FROM THE
BOTTOM OR FROM THE TOP
PLUG FANS WITH EC
ELECTRIC MOTOR
MODULATING
POST-HEATING COIL

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INDEX
i-MTR2-G02-M0
1. CERTIFICATIONS 5
2. PRODUCT DESCRIPTION 6
2.1 GENERAL CHARACTERISTICS 6
2.2 INSTALLATION 7
2.3 PRODUCT FEATURES AND BENEFITS 7
2.4 F-GAS DIRECTIVE 7
2.5 MODEL IDENTIFICATION 7
2.6 TRANSPORT AND STORAGE TEMPERATURE 7
3. WORKING LIMITS 8
4. COMPONENTS OF THE UNIT 9
4.1 MAIN COMPONENTS 9
4.2 MICROPROCESSOR CONTROL SYSTEM 11
4.3 STANDARD EQUIPMENT 13
5. SERIES GX-Z REMOTE AIR CONDENSERS 16
6. TECHNICAL DATA 17
7. ACOUSTIC DATA 22
8. ELECTRICAL DATA 23
9. OPTIONAL ACCESSORIES 24
OPTIONAL ACCESSORIES: P121 – FRONT INTAKE + BOTTOM PANEL 26
OPTIONAL ACCESSORIES: P122 – BOTTOM INTAKE + SOLID PANELS 26
OPTIONAL ACCESSORIES: 601 – LIQUID LINE SOLENOID 26
OPTIONAL ACCESSORIES: P091 – CONTROLLER BUFFER MODULE 26
OPTIONAL ACCESSORIES: P171 – AC AXIAL MCH -45°C AIR KIT (GR-Z A B 50) 27
OPTIONAL ACCESSORIES: P191 – REMOTE CONDENSER POWER SUPPLY 27

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INDEX
OPTIONAL ACCESSORIES: 383 – NUMBERED WIRINGS + UK REQUESTS 27
OPTIONAL ACCESSORIES: 4181 – MODBUS PROTOCOL SERIAL CARD 28
OPTIONAL ACCESSORIES: 4182 – LON PROTOCOL SERIAL CARD 28
OPTIONAL ACCESSORIES: 4184 – BACNET MS/TP RS485 SERIAL CARD 28
OPTIONAL ACCESSORIES: 4185 – BACNET OVER IP SERIAL CARD 28
OPTIONAL ACCESSORIES: A351 ACCESSORIES - GRAPHIC DISPLAY 29
OPTIONAL ACCESSORIES: A352 – NO DISPLAY 30
OPTIONAL ACCESSORIES: A35B – “EVOLUTION TOUCH” GRAPHIC DISPLAY 30
OPTIONAL ACCESSORIES: P151 – LOWERED DISPLAY FOR UNDER 31
OPTIONAL ACCESSORIES: B912 – REMOTE KEYBOARD K200 31
OPTIONAL ACCESSORIES: 5891 – CONTROL UNIT VIA KIPLINK 31
OPTIONAL ACCESSORIES: A492 – WATER LEAKAGE DETECTOR + ADDITIONAL DETECTOR 32
OPTIONAL ACCESSORIES: A511 – SMOKE DETECTOR 32
OPTIONAL ACCESSORIES: A521 – FIRE DETECTOR 32
OPTIONAL ACCESSORIES: P183 – NETWORK ANALYSER KIT 33
OPTIONAL ACCESSORIES: P184 – NETWORK ANALYSER KIT + OPTIONAL 33
OPTIONAL ACCESSORIES: P071/P072/P073/P074 – REMOTE T/RH PROBE 34
OPTIONAL ACCESSORIES: P113 – DUAL SUPPLY KIT 35
OPTIONAL ACCESSORIES: P114 – DUAL SUPPLY KIT + OPTIONAL 35
OPTIONAL ACCESSORIES: A381 - CONDENSATE DISCHARGE PUMP 36
OPTIONAL ACCESSORIES: P084 – ePM10 50% AIR FILTERS 36
OPTIONAL ACCESSORIES: A531 - ON-OFF DAMPER 38
OPTIONAL ACCESSORIES: P011 – VACUUM PLENUM 38
OPTIONAL ACCESSORIES: P012 – CL.A1 VACUUM PLENUM 38
OPTIONAL ACCESSORIES: P031 – VACUUM INTAKE PLENUM 40
OPTIONAL ACCESSORIES: P032 – CL.A1 VACUUM INTAKE PLENUM 40
OPTIONAL ACCESSORIES: P013 – PLENUM + 3 GRILLES 41

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Liability disclaimer
The present publication is drawn up by of information only and does not constitute an offer binding upon Mitsubishi Electric Hydronics &
IT Cooling Systems S.p.A. Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A. has compiled the content of this publication to the
best of its knowledge. The data contained herein are subject to change without notice. Mitsubishi Electric Hydronics & IT Cooling Systems
S.p.A. explicitly rejects any liability for any direct or indirect damage, in the broadest sense, arising from or related to the use and/or
interpretation of this publication. All content is copyrighted by Mitsubishi Electric Hydronics & IT Cooling Systems S.p.A.
INDEX
OPTIONAL ACCESSORIES: P014 - CL.A1 PLENUM + 3 GRILLES 41
OPTIONAL ACCESSORIES: P015 - SILENT PLENUM 42
OPTIONAL ACCESSORIES: P016 – SILENT PLENUM + 1 GRILLE 43
OPTIONAL ACCESSORIES: P017 – PLENUM + EPM2.5 50% FILTER 44
OPTIONAL ACCESSORIES: P018 – PLENUM + EPM1 50% FILTER 44
OPTIONAL ACCESSORIES: P019 – PLENUM + EPM1 85% FILTER 44
OPTIONAL ACCESSORIES: P041 – FLOOR STAND H 255-350MM 45
OPTIONAL ACCESSORIES: P042 – FLOOR STAND H 355-450MM 45
OPTIONAL ACCESSORIES: P043 – FLOOR STAND H 400-510MM 45
OPTIONAL ACCESSORIES: 3601 – COMPRESSORS OPERATING SIGNAL 45
OPTIONAL ACCESSORIES: 2411 – PHASE SEQUENCE CONTROL 45
OPTIONAL ACCESSORIES: A272 – CL.0 or A1 (EN13501-1) INSULATION 46
10. UNIT DRAWINGS 47
11. HOLE IN THE RAISED FLOOR FOR DOWNFLOW VERSION 49
12. EXAMPLES OF CALCULATION OF THE SOUND EMISSION OF UNITS 50
13. INFORMATION ON SHIPPING 52
13.1 PACKING DIMENSIONS 52
13.2 SHIPPING WEIGHT 52
13.3 DIMENSIONS OF PACK OF ACCESSORIES AND SHIPPING WEIGHT 53

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Company certications
ISO 9001 CERTIFICATION
Quality Management System
ISO 14001 CERTIFICATION
Environmental Management System
BS OHSAS 18001 CERTIFICATION
Occupational Health and
Safety Management System
Product certications by country
CE MARKING CCC – CQC
CERTIFICATION
(People’s Republic
of China)
DECLARATION
OF CONFORMITY
(Russian Federation,
Belarus, Kazakhstan)
CERTIFICATIOS

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2. PRODUCT
DESCRIPTION
FULL INVERTER air conditioners ideal for metrological rooms and laboratories.
• Direct expansion, air cooled
• Prepared for coupling to remote air-cooled condenser
• BLDC inverter compressors
• Plug fans with EC electric motor
• Single refrigerant circuit
This series, for perimeter installation, is offered in 2 models available in the following versions:
• The downow version (UNDER) is characterized by air intake from the top and air delivery from the bot-
tom of the unit.
• The upow version (OVER) is characterized by air intake from the front through honeycomb grille and air
delivery from the top of the unit.
Cooling capacity: 11-16 kW
UNDER
Downow air delivery
OVER
Upow air delivery
2.1. GENERAL CHARACTERISTICS
The units are designed for indoor installation.
The constructive solutions and the internal lay-out allow high application exibility and the frontal access to
the main components for the inspection and routine maintenance.
The units require the refrigerant gas charge and electrical and hydraulic connections.
The end-of-line test consists of a functional test with reading and monitoring of operating parameters, alarm
simulation and visual examination.
Remote condenser
Air conditioner

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2. PRODUCT
CHARACTERISTICS
The series is especially suitable for the installation in laboratories, archives, museums, and for tobacco,
textile and pharmaceutical processing plants where the parameters of temperature and humidity inuences
measurement, test and stockage of sensitive goods.
The combination of modulating hot gas reheating, modulation of cooling capacity by the inverter compressor,
and accurate and continuous adjustment of steam production, the unit ensures precise temperature and
humidity control (± 0.3 °C and ± 2 % RH).
In order to achieve this extraordinary performance, several important conditions are required:
• Heat load must be constant or stable, with variations no greater than 25% per hour
• The unit must be properly installed and ducted
• The space needs to be suitably insulated against outside loads (especially doors, windows, etc.)
• The conditions of the intake air are covered in the paragraph on "Operating limits".
NOTE:
The immersed electrode humidier periodically activates ushing cycles to reduce the salt concentration of
the water. During this short period of time, the humidier cannot guarantee the humidication functions so it
is possible that the humidity control exceeds the set point.
OPTIONAL ACCESSORIES
There is a complete range of accessories for adapting the unit effectively to the real needs of the system,
reducing the time and cost of installation.
2.2. INSTALLATION
• EER up to 4.88 at partial load
• BLDC inverter compressor for each refrigerant circuit to ensure the ultimate in energy eciency
• New Plug Fan with EC electric motor for lower power consumption
• Maintenance-free fan motor
• Continuous modulation of air ow and cooling capacity
• Dedicated control software for applications where extremely precise adjustment is required
• Single refrigerant circuit
2.3. PRODUCT FEATURES AND BENEFITS
2.4. F-GAS DIRECTIVE
The units highlighted in this publication contain <HFC R410A [GWP100 2088]> uorinated greenhouse gases.
2.5. MODEL IDENTIFICATION
Air conditioners for IT Cooling
Model i-MTR2-G02-M0 U 018 E2
i-MTR2 Series
G02 R410A refrigerant
M0 Target market
U Air discharge
O = OVER- upow air delivery
U = UNDER- downow air delivery
018 Model / Cooling capacity (kW) at nominal conditions
E2 Size
2.6. TRANSPORT AND STORAGE TEMPERATURE
During transport and if the unit is not installed upon receipt, it must be placed in its packaging in a closed, dry
environment protected from sunlight at a temperature between -30 °C and 50 °C in the absence of surface
condensation.

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3. WORKING
LIMITS
Room air temperature:
16°C Minimum temperature with dry bulb
24°C Maximum temperature with dry bulb
Room air humidity:
40% RH Minimum relative humidity
70% RH Maximum relative humidity
46°C Maximum ambient air temperature
-35°C Minimum ambient air temperature
-45°C Minimum ambient air temperature for remote condensers with AC fans and LT kit
All the values are indicative. The working temperatures are inuenced by a series of variables as:
• Working conditions
• Cooling load
• Set of the microprocessor control
± 10% Maximum tolerance of the supply voltage (V)
± 2% Maximum unbalancing of the phases
ROOM AIR CONDITIONS
OUTDOOR AIR TEMPERATURE
LT VERSION TO OPERATE AT LOW OUTDOOR AIR TEMPERATURES
POWER SUPPLY
0 5 10 15 20 25 30 35 40 45 50
0
5
10
15
20
25
30 C°
4%
4%
2%
2%
60%
70% 70%
60%
50%
40%
30%
80% 80%
90% 90%
50%
40%
30%
25%
25%
20%
20%
15%
15%
8%
8%
10%
10%
6%
6%
25
20
15
10
5
0
15
Relative humidity - %
Relative humidity - %
Temperature with Dry bulb - °C
T
e
m
p
e
r
a
t
u
r
e
w
i
t
h
w
e
t
b
u
l
b
-
°
C
A
AREA “A”. Operating area of the unit

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UNIT DESCRIPTION
4.1. MAIN COMPONENTS
FRAMEWORK
• Frame in extruded aluminium, hot-coated with epoxy powder.
Colour RAL 9005;
• Base and frame in galvanized steel with epoxy powder coating.
Colore RAL 7016. The internal frame is equipped with gaskets
for the panels.
• Panels in galvanized steel sheet with protective surface
treatment in compliance with UNI ISO 9227/ASTMB117 and
ISO 7253, and with epoxy powder coating. Colour RAL 7016
hammered.
• Panels insulated with polyurethane foam based on polyester
polyol with fused protective lm and gaskets to ensure
airtightness. Thickness 15 mm. Fire resistance HF1 - UL94.
• Hinged front panels with key lock and removable side and rear
panels.
• All routine maintenance from the front.
• Front compartment for electrical panel for direct access to
control and adjustment devices.
• Metal brackets for xing the unit to the wall.
• Air ow UNDER version: Air intake from the top and air delivery
from the bottom.
• Air ow OVER version: Air intake from the front through a
honeycomb grille and upward air delivery with protective mesh.
FILTER SECTION
• Washable air lters with COARSE 60% eciency (according to
ISO EN 16890), with cells in synthetic bre and metallic frame.
• Air lters access:
- frontal access for all units.
• Dirty lter sensor connected to air side differential pressure
switch.
BLDC INVERTER COMPRESSORS SECTION
Model 012:
• Rotary BLDC inverter compressor for R410A refrigerant.
Model 018:
• Scroll BLDC inverter compressors with spiral prole optimized
for R410A refrigerant.
FOR ALL COMPRESSORS:
• Synchronous brushless inverter driven motor.
• Inverter for modulating capacity control.
• Reactance for the reduction of electromagnetic noise and
interference.
• Crankcase heater.
• Rubber vibration damper supports.
FAN SECTION
The fan section is inside the unit and includes:
• Centrifugal fan with backward curved blades with wing prole,
single suction and without scroll housings (Plug-fans), directly
coupled to external rotor electric motor.
4. COMPONENTS OF THE UNIT

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UNIT DESCRIPTION
• Impeller in corrosion-resistant composite material.
• Brushless type synchronous EC motor with integrated
electronic commutated system and continuous variation of the
rotation speed. The microprocessor control sends a signal to
change the revolutions of the motor.
• Adjustable head.
COOLING SECTION
Heat exchanger coil with internally corrugated copper tubes and
high eciency aluminium ns, specically developed to provide
high heat transfer and lower pressure drops.
• Finned pack with hydrophilic treatment that ensures
optimal draining of the condensate water and high thermal
conductivity, and does not favour the growth of micro-
organisms.
• Condensate tray in aluminium with PVC exible discharge pipe.
• Combined temperature and humidity sensor on air intake with
function of control and adjustment.
• Temperature sensor on air delivery with function of
temperature display.
POST-HEATING WITH MODULATING HOT GAS COIL
• Micro-channel exchanger entirely in Long Life Alloy 9153
aluminium alloy with high resistance to galvanic corrosion and
of high eciency, specically developed to guarantee a high
heat exchange coecient, a low refrigerant content and low
pressure drops.
• Modulating motorized diverter valve for continuous post-
heating adjustment.
The modulating hot gas coil is installed downstream of
the evaporator coil and it is used together with the inverter
compressor to ensure accurate and continuous unit cooling
capacity modulation thus precisely controlling temperature and
humidity.
REFRIGERANT CIRCUIT
The air conditioner is supplied with a minimum charge of R410A
refrigerant.
Components for each refrigerant circuit:
• Electronic expansion valve. The valve allows high performance
and system eciency thanks to a timely and accurate response
to changes in temperature and pressure.
• Liquid and humidity sight glass.
• Filter dryer on liquid line.
• Pressure transducers with indication, control and protection
functions, on low and high refrigerant pressure. High pressure
safety switch with manual reset.
• Liquid receiver.
• Pressure relief valve on liquid receiver.
• Copper cooling pipes with anti-condensation insulation.
• Charge of lubricating oil.
• Oil separator on gas discharge.
• Taps on gas delivery and liquid return for connection to remote
air-cooled condenser.
4. COMPONENTS OF THE UNIT

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UNIT DESCRIPTION4. COMPONENTS OF THE UNIT
• 0-10V proportional signal to command the condensing control
system of the remote air-cooled condenser.
• Modulating motorized diverter valve for control of post-heating
coil.
ELECTRICAL PANEL
In accordance with EN60204-1 norms, suitable for indoor installation,
complete with:
• Main door-lock disconnector switch on containment panel.
• Magnetothermic switches for the compressor and fan.
• Transformer for auxiliary circuit and microprocessor supply.
• Numbered wirings.
• Terminals for remote condenser power supply, with
magnetothermic switch, (optional).
• Terminals:
OUTLETS
- Voltage free deviating contact for General Alarm 1-2.
- Voltage free contact for supply fans status.
- Voltage free contact for compressor operating signal
(optional).
• INLETS
- External enabling.
- Smoke/re sensors (the sensors are accessories).
• Power supply:
- 400/3+N/50.
4.2. MICROPROCESSOR CONTROL SYSTEM
The unit is equipped with the controller connected to a 6 keys
keyboard with graphic display on which all information in English
language or easily identiable symbols are displayed.
The controller disposes of a “ash” memory that preserves the
information even in absence of power supply. Part of memory is
dedicated to the registration of intervened events - up to 200 events.
CONNECTIVITY
Through the optional serial port, the microprocessor control ena-
bles communication with the modern buildings BMS systems with
the following protocols: MODBUS; LON; BACNET MS/TP RS485;
BACNET OVER IP.

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UNIT DESCRIPTION4. COMPONENTS OF THE UNIT
PASSWORD
Level 1: On request of the End User. Allowing to reach USER menu
Level 2: Asks to Service: Allowing to reach SERVICE menu
Level 3: Asks to Service: Allowing to reach FACTORY menu
No passwords request to enter: UNIT, SETPOINT, IN/OUT, CLOCK,
HISTORY menu
REMOTE
TERMINAL
LAN Address 12 LAN Address 13 LAN Address 30
LAN Address 2 LAN Address 3 LAN Address 15 LAN Address 32
Display & Keyboard
LAN address = 11 LAN
Controller - LAN address = 1
MODBUS BACNET
OVER IP
LONLON BACnet
MS/TP RS485
BMS 1
Controller
buffer
module
Network
analyser
Board 3
expansion
Board 2
expansion
Board 1
expansion
Humidier
control
Additional
T/S probe
T/H
probe
T
probe
Fan
1
Fan
2
Fan
3
EEV1
control
EEV2
control
Compressor 1
inverter
Compressor 2
inverter
FieldBus 2
UNIT 2 UNIT 3 UNIT 15
UNIT 1

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UNIT DESCRIPTION4. COMPONENTS OF THE UNIT
LAN NETWORK
The LAN is part of the control software and it is possible to connect
up to 15 units. This type of connection allows to control the units in
coherent way, moreover the units can be controlled and managed
from a shared remote terminal.
The unit connection to the local network (LAN) allows to perform the
following functions:
• Balancing the operating hours among the different units by
rotating the reserve units (Stand-by)
• Turning on the reserve units in case other units should turn off
due to an alarm, maintenance or power feed interruption
• Turning on reserve units to offset the excessive thermal load
• Checking up to 10 units with a single user terminal (shared user
terminal).
4.3. STANDARD EQUIPMENT
ELECTRONIC EXPANSION VALVE
The electronic expansion valve is for precise control of overheating
in the various environmental conditions
AIR INTAKE AND DELIVERY PROBES
The unit is equipped with a combined temperature / humidity probe
on the air intake, used for unit adjustment, and a NTC probe on the
air deliver.
CLOGGED FILTER SENSOR
The system includes a differential pressure switch installed in the
electrical panel or in the front of the indoor unit and the plastic
hoses for the relief of the pressure upstream and downstream the
air lters.
Control range: 0,3 … 4,0 mbar (30 … 400 Pa)
Differential for intervention: 0,15 mbar (15 Pa)
WATER LEAKAGE DETECTOR
The system includes an electronic relay installed in the electrical
panel of the unit and a water detector.
The electrical connections for the probe and the alarm contact are
present in the unit's terminal board.
The water sensor is supplied in a mounting kit.
COMPRESSOR SOUNDPROOF JACKET
The system consists of a soundproof jacket for each compressor to
reduce the sound level of the unit.
Units n. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Remote terminal
Motherboard address 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ---
Terminal address 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 32

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Min Max
Hydrogen ions pH 7 8.5
Specic conductivity at 20 °C σR, 20 °C μS/cm 350 750
Total dissolved solids TDS mg/l (1) (1)
Dry residue at 180 °C R180 mg/l (1) (1)
Total hardness TH mg/l CaCO3100 (2) 400
Temporary hardness mg/l CaCO360 (3) 300
Iron + Manganese mg/l Fe + Mn 0 0.2
Chlorides ppm Cl 0 30
Silica mg/l SiO20 20
Residual chlorine mg/l Cl- 0 0.2
Calcium sulphateo mg/l CaSO40 100
Metallic impurities mg/l 0 0
Solvents, diluents, soaps, lubricants mg/l 0 0
4. COMPONENTS OF THE UNIT
HUMIDIFIER VAP 5KG/H
Modulating steam humidier with immersed electrodes tted with safety and
running accessories.
The optional includes the control board.
The optional is factory installed and requires only water lling connection.
Humidier water charge and discharge pipes are not supplied. It is recommended
to install a lter and a shut-off valve on the pipe to the water inlet.
This humidier produces non-pressurized steam by electrodes immersed in
the water inside the cylinder: they bring the electric phase in the water that
works as an electrical resistance and overheats. The steam so produced is
distributed with dedicated distributors and used for ambient humidication or
for industrial processes.
CHARACTERISTICS OF THE SUPPLY WATER
The quality of the used water inuences the evaporation process, so the
humidier can be fed with not- treated water, only when potable and non-
demineralised.
LIMIT VALUES:
(1) Values depending on specic conductivity; in general: TDS ≅≅0,93 * σR, 20 °C; R180 ≅≅0,65 * σR
(2) Not lower than 200% of the chloride content in mg/l of Cl-
(3) Not lower than 300% of the chloride content in mg/l of Cl-

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ELECTRIC HEATERS
Electric heater consisting of nned aluminium elements, ensuring
low surface temperature and deleting the air ionization problems.
The optional is installed downstream the main cooling coil. In
electric heaters with three working steps the activation is binary
type.
Components:
• Electric heater in aluminium armoured elements with integral
ns
• Electrical control
• Safety thermostat
4. COMPONENTS OF THE UNIT
• WARNING:
• Use only with drinking water.
• There is no reliable relationship between hardness and water
conductivity
• Do not treat water with softeners! This could cause corrosion of the
electrodes or the formation of foam, leading to potential operating
problems or failures.
• Do not add disinfectants or corrosion inhibiters to water, as these
substances are potentially irritant.
• Is absolutely forbidden to use well water, industrial water or water
drawn from cooling circuits; in general, avoid using potentially
contaminated water, either from a chemical or bacteriological point
of view.
MODEL 012-018
POWER SUPPLY 400/3/50
VAPOUR PRODUCTION kg/h 5
Power input kW 3,75
Max current input (FLA) A 5,5
Water content l 3,9
HYDRAULIC CONNECTION
WATER INLET - ISO 228/1 – G M (1) Ø 3/4”
WATER OUTLED – external diameter Ø mm 32
MODEL 012-018
POWER SUPPLY 400/3/50
VAPOUR PRODUCTION kg/h 5
Power input kW 3,75
DATI TECNICI

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5. SERIES GR-Z REMOTE AIR
CONDENSERS
Remote air condensers for matching to air conditioners for IT Cooling.
They are designed to offer a high degree of application exibility.
The air ow is horizontal, from coil to fan.
The series has an independent power supply from the indoor unit.
Between the internal unit and the remote condenser, it is necessary to make the cooling and electrical
connection of the condensation control proportional signal and of the alarms.
For all PRECISE units it is possible to supply power to the dry-cooler from the electrical panel of the indoor unit
that includes magnetothermic switches for condenser fans.
The units are made of Peraluman aluminium alloy which make them suitable for outdoor installation.
GR-Z A B 50: Remote air cooled condensers equipped with AC axial fans, micro-channel condensing coil and
Standard soundproong.
GR-Z A L 50: Remote air cooled condensers equipped with AC axial fans, micro-channel condensing coil and
Ultra-Silent soundproong.
GR-Z E B 50: Remote air cooled condensers equipped with EC axial fans, micro-channel condensing coil and
Standard soundproong.
GR-Z E L 50: Remote air cooled condensers equipped with EC axial fans, micro-channel condensing coil and
Ultra-Silent soundproong.
IMPORTANT
For further information about the units, please refer to “GR-Z” Data Book
WARNING:
Use the ELCA WORLD selection program to calculate the cooling capacity of the air conditioner according to
the desired combination.

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UNIT DESCRIPTION6. TECHNICAL DATA
MODEL 012  018
SIZE E2 E2
POWER SUPPLY V/Ph/Hz 400/3+N/50 400/3+N/50
COOLING CAPACITY (1) 100% 80% 60% 40% 30% 100% 80% 60% 40% 30%
Total kW 11.10 8.88 6.66 4.44 3.34 15.80 12.64 9.48 6.32 4.74
Sensible kW 11.10 8.88 6.66 4.44 3.34 14.55 12.19 9.48 6.32 4.74
SHR (2) 1.00 1.00 1.00 1.00 1.00 0.92 0.96 1.00 1.00 1.00
Total power input (Comp. + Fans) kW 2.94 2.12 1.39 0.75 0.57 4.84 3.57 2.51 1.65 1.29
THERMAL CAPACITY in total
DEHUMIDIFICATION (3) kW 2.94 2.12 1.39 0.75 0.57 4.84 3.57 2.51 1.65 1.29
THERMAL CAPACITY in
HEATING ONLY (4) (optional) kW 6.41 6.26 6.15 6.08 6.05 6.65 6.44 6.28 6.16 6.12
HUMIDIFIER (optional)
Vapour production kg/h 5 5
Power input kW 3,75 3,75
Max current input (FLA) A 5,5 5,5
Water content l 3,9 3,9
ELECTRIC HEATERS
Power kW 6 6
Current Draw A 8.7 8.7
Steps no. 2 2
"EC" SUPPLY FANS no. 1 1
Air ow Hours 3500 2997 2494 1991 1740 4100 3596 3093 2590 2340
Nominal external static pressure Pa 20 -- -- -- -- -- -- -- -- --
Maximum external static pressure Pa 340 -- -- -- -- 180 -- -- -- --
Power input (5) kW 0.41 0.26 0.15 0.08 0.05 0.65 0.44 0.28 0.16 0.12
COMPRESSORS Rotary Scroll
BLDC compressors no. 1 1
Cooling capacity control Modulating Modulating
Compressors power input kW 2.53 1.86 1.24 0.67 0.52 4.19 3.13 2.23 1.49 1.17
HOT GAS POST-HEATING
Heating Capacity Control Modulating Modulating
AIR FILTERS no. 1 1
Eciency (ISO EN 16890) COARSE 60% 60%
GAS CIRCUITS no. 1 1
ENERGY EFFICIENCY INDEXES (1)
EER - Energy Eciency Ratio (6) kW/kW 3.78 4.19 4.80 5.96 5.86 3.26 3.54 3.78 3.82 3.67
DIMENSIONS
Length mm 785 785
Width - Depth mm 675 675
Height mm 1925 1925
NET WEIGHT kg 278 280
COOLING CONNECTIONS
Gas delivery ODS Ø 12 16
Liquid return ODS Ø 12 12
REMOTE CONDENSER GR-Z A B 50 - 015 GR-Z A B 50 - 024
HYDRAULIC CONNECTION
Condensate discharge
Rubber pipe – internal diameter Ø mm 20 20
Humidier connections
Water inlet - ISO 228/1 – G M Ø 3/4" 3/4"
Water outlet – internal diameter Ø mm 32 32

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UNIT DESCRIPTION
(1) Gross value in cooling only conguration. Characteristics referred to incoming air 24 °C-50% RH;
condensing temperature 45 °C; EXP = 20Pa.
(2) Gross sensible capacity in cooling only, reference conditions as in point 1. SHR = Sensible cooling
capacity / Total cooling capacity.
(3) Heating capacity resulting from operation in total dehumidication with active compressor and by-pass
on post-heating.
(4) Heating capacity resulting from operation of the electric heaters (optional) with the compressor off and
the ventilation running.
(5) Corresponding to the nominal external static pressure.
(6) The energy index does not consider the remote condenser and the reference conditions are the same as
those in point 1.
The cooling capacity does not consider the supply fan motor thermal load.
Note: below 30% of cooling capacity, the inverter compressor enters the "cycling" area in which the
compressor operates with ON / OFF cycles below the minimum modulation frequency (operation only for
short periods).
SELECT THE UNIT IN THE MODULATION FIELD.
REFRIGERANT CHARGE
The air conditioner is supplied with a minimum charge of R410A refrigerant. The cooling gas must be charged.
The tables show the refrigerant charge for the condenser only; the remote condenser, the connection pipes
and any accessories are excluded.
PRESSURE RELIEF VALVE
The valve has the purpose of protecting the circuit from overpressure.
It is the installer's responsibility to check whether the system complies with the 2014/68/EU standard
regarding the installation of the safety valve.
By the system we mean the complete system that includes the internal unit, the remote condenser and the
connection pipes.
The installer must calculate the quantity of refrigerant contained in the system and, if the refrigerant charge is
greater than 10 kg, he must install the safety valve.
6. TECHNICAL DATA
MODEL 012 018
REFRIGERANT R410A R410A
Gas circuits x Refrigerant charge (1) n x kg 1 x 4.5 1 x 4.5
HFC R410A - F Gas - equivalent CO2t 9,5 9.5
Factory installed components
Pressure relief valve on liquid receiver
Model [bar]
012 41.5
018 41.5
Drain ow
Ø 3/4” G – M CONNECTION
1. Refrigerant charge required for the air conditioner only operation. Remote condenser, connections pipes
and optional are excluded.

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UNIT DESCRIPTION6. TECHNICAL DATA
ID Description
1 GAS DELIVERY
2 LIQUID RETURN
A REMOTE CONDENSER
B PLUG FAN
E EVAPORATING COIL
FG DEHYDRATOR FILTER
IPL LIQUID FLOW SIGHT GLASS
M COMPRESSOR
RHE HOT GAS POST-HEATING COIL
RL LIQUID RECEIVER
RO OIL HEATER
RU TAP
SO OIL SEPARATOR
SP PRESSURE SENSOR
SP.H HIGH PRESSURE SWITCH
ST TEMPERATURE PROBE
VS THREE-WAY BALL VALVE
VSH PRESSURE PORT (SCHRADER VALVE)
YEA ELECTRONIC EXPANSION VALVE
Yr CHECK VALVE
YS SAFETY VALVE
YV SOLENOID VALVE
DIAGRAM OF REFRIGERANT CIRCUIT

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UNIT DESCRIPTION
RECOMMENDED COOLING LINES
Diameters of cooling lines recommended for connection to MEHITS S.p.A. air conditioners and referred to the
"EQUIVALENT LENGTH".
Please always refer to the "INSTALLATION DIAGRAM" to select all the necessary components correctly.
Check the need to use pressure relief devices (safety valves) where not already provided for in Directive
2014/68/EU.
Nominal diameter: Cooling connection of the indoor unit. In some cases the diameter of the cooling lines
may not correspond with the nominal diameter. This is entirely normal; it is sucient to use an adapter to
adjust the diameter.
PIPE DIAMETERS ACCORDING TO THE INTERNATIONAL SYSTEM
International
System
Diameter mm 6 8 10 12 16 18 22 28 35
Thickness mm 1 1 1 1 1 1 1 1.5 1.5
Model Line
Nominal
diameter
Ø [mm]
EQUIVALENT LENGTH [m] FOR R410A INVERTER COMPRESSORS
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
12 Gas 12 12 12 12 12 12 12 16 16 16 16 16 16 16 16 16 16 16 16 16 16
Liquid 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12 12
18 Gas 16 16 16 16 16 16 16 18 18 18 18 18 18 18 18 18 18 18 18 18 18
Liquid 12 12 12 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16 16
For equivalent pipe lengths over 100 m, please contact the manufacturer's sales oce.
PIPE DIAMETERS ACCORDING TO THE "IMPERIAL" SYSTEM
IMPERIAL
system
Diameter Inches 1/4" 3/8" 1/2" 5/8" 3/4" 7/8" 1" 1 1/8" 1 3/8"
mm 6.35 9.52 12.7 15.87 19.05 22.22 25.4 28.57 34.92
Thickness mm 1 1 1 1 1 1 1 1.25 1.25
Model Line
Nominal
diameter
Ø [mm]
EQUIVALENT LENGTH [m] FOR R410A INVERTER COMPRESSORS
15 35 50 65 80 100 115 130 150 165 180 195 215 230 245 260 280 295 310 330
12 Gas 12 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8”
Liquid 12 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2” 1/2”
18 Gas 16 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4” 3/4”
Liquid 12 1/2” 1/2” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8” 5/8”
6. TECHNICAL DATA