Condair DC Series User manual

Incorporated in this document are the following:
• Declaration of conformity
• Technical manual
• Dimensional drawing
INSTALLATION AND
OPERATION MANUAL
Condensing dehumidifier
Condair DC'&'&'&
DC 270N / DC 350N / DC 450N / DC 550N
DC 750N / DC 950N
2594159

Rev.A07-2017
2
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
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Declaration of conformity
We declare under our own responsibility that the below equipment complies in all parts with the CEE and EN directives.
The declaration of conformity is enclosed to the technical booklet enclosed with the unit.
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Reproduction, data storage and transmission, even partial, of this publication, in any form, without the prior written authorisation of the
Company, is prohibited. The Company can be contacted for all inquiries regarding the use of its products.
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equipment and instructions regarding use and maintenance at any time, without notice.
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Thank you for choosing Condair
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Proprietary Notice
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MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
INDEX
1. INTRODUCTION.....................................................................................................................................................................................
1.1 Preliminary information......................................................................................................................................................
1.2Aim and content of the manual..........................................................................................................................................
1.3 How to store this manual...................................................................................................................................................
1.4 Manual Update..................................................................................................................................................................
1.5 How to use this manual.....................................................................................................................................................
1.6 Potential Risks...................................................................................................................................................................
1.7 General Description of Symbols Used...............................................................................................................................
1.8 Safety symbols used..........................................................................................................................................................
1.9 Limitations and prohibited use...........................................................................................................................................
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2. SAFETY .................................................................................................................................................................................................
2.1 Warning re potentially hazardous toxic substances...........................................................................................................
2.2 Refrigerant handling..........................................................................................................................................................
2.3 Prevent inhalation of high vapor concentration..................................................................................................................
2.4 Procedures to be adopted in the event of accidental release of refrigerant ......................................................................
2.5 Main Toxicological Information Regarding the Type of refrigerant used............................................................................
2.6 FirstAid Measures.............................................................................................................................................................
3. TECHNICAL CHARACTERISTICS.........................................................................................................................................................
3.1 Unit description..................................................................................................................................................................
3.2Accessories .......................................................................................................................................................................
3.3 Technical data....................................................................................................................................................................
3.4 Operation limits..................................................................................................................................................................
3.5 Sound data........................................................................................................................................................................
3.6 Safety devices...................................................................................................................................................................
4. INSTALLATION .......................................................................................................................................................................................
4.1 General safety guidelines and and use of symbols...........................................................................................................
4.2 Health and safety Considerations .....................................................................................................................................
4.3 Personal protective equipment .........................................................................................................................................
4.4 Inspection .........................................................................................................................................................................
4.5 Storage..............................................................................................................................................................................
4.6 Unpacking..........................................................................................................................................................................
4.7 Lifting and handling............................................................................................................................................................
4.8 Location and minimum technical clearances.....................................................................................................................
4.9 Condensate draining connections.....................................................................................................................................
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4.11 Refrigerant connections for Z version..............................................................................................................................
4.12 Refrigerant diameters lines for version Z.........................................................................................................................
4.13 Refrigerant schema.........................................................................................................................................................
4.14 Installation of built-in room electronic sensor (RGDD).....................................................................................................
4.15 Serial interface card RS485 (INSE).................................................................................................................................
4.16 Connecting the unit to air duct channels..........................................................................................................................
4.17 Fan positioning................................................................................................................................................................
4.18 Electric connections: preliminary safety information........................................................................................................
4.19 Electrical data..................................................................................................................................................................
4.20
How to connect the power supply....................................................................................................................................
4.21 Electric connections.........................................................................................................................................................
5. UNIT START UP......................................................................................................................................................................................
5.1 Preliminary checks.............................................................................................................................................................
5.2 Description of the control panel.........................................................................................................................................
5.3 Remote control panel.........................................................................................................................................................
6. USE.........................................................................................................................................................................................................
6.1 Switch the unit on..............................................................................................................................................................
6.2 Stop...................................................................................................................................................................................
6.3 Stand-by............................................................................................................................................................................
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MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
6.4 How to change the set points............................................................................................................................................
6.5Acoustic signal silencing....................................................................................................................................................
6.6 Display during alarm..........................................................................................................................................................
6.7Alarm reset.........................................................................................................................................................................
7. MAINTENANCE OF THE UNIT...............................................................................................................................................................
7.1 General warnings...............................................................................................................................................................
7.2 Drive access......................................................................................................................................................................
7.3 Periodical checks...............................................................................................................................................................
7.4 Refrigerant circuit repair ....................................................................................................................................................
8. DECOMMISSIONING.............................................................................................................................................................................
8.1 Disconnect the unit............................................................................................................................................................
8.2 Disposal, recovery and recycling.......................................................................................................................................
8.3 RAEE Directive (only UE)..................................................................................................................................................
9. DIAGNOSISAND TROUBLESHOOTING..............................................................................................................................................
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10.DIMENSIONALDRAWINGS..................................................................................................................................................................
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11. EU DECLARATION OF CONFORMITY............................................................................................................................................... 45

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MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
1. INTRODUCTION
1.1 Preliminary information
1.2Aim and content of the manual
1.3 How to store this manual
1.4 Manual Update
1.5 How to use this manual
Reproduction, storage or transmission of any part of this publication in any form, without the prior written consent of the Company, is pro-
hibited.
The unit to which these instructions refer, is designed to be used for the the purposes described and to be operated in accordance with
these instructions.
The Company will not be liable for claims for damage caused to persons, animals, material goods or property caused by improper installa-
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This document is intended to provide information only and does not form a contract with third parties.
The Company pursues a policy of constant improvement and development of its products and therefore reserves the right to change the
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These instructions are intended to provide the information required for the selection, installation, use and maintenance of the unit.
They have been prepared in accordance with the European Union laws and with the technical standards in force at the date of issue of the
instructions.
The instructions contain all the necessary information to prevent any reasonably foreseeable misuse.
The manual must be kept in a suitable place with easy access for users and operators, protected from dust and damp.
The manual must always accompany the unit during the entire life cycle of the same and therefore must be transferred to any subsequent
user.
It is recommended that the manual is updated to the latest revision available.
If updates are sent to the customer they must be added to this manual.
The latest information regarding the use of its products is available by contacting the Company.
The manual is an integral part of the unit.
Users or operators must consult the manual before performing any operation and especially so when transporting, han-
dling, installating, maintaining, or dismantling the unit in order to eliminate uncertainty and reduce risk.
In these instructions symbols have been used (described in the following paragraphs) to draw the attention of operators
and users to the operations that have a higher risk and which must be performed safely.
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MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
1.6 Potential Risks
Whilst the unit has been designed to minimize any risk posed to the safety of people who will interact with it, it has not been technically
possible to eliminate completely the causes of risk. It is therefore necessary to refer to the requirements and symbolism below:
LOCATION OF
RISK POTENTIAL RISK METHOD OF INJURY PRECAUTIONS
Thermal heat
exchangers. Small stab wounds. Contact Avoid any contact,
use protective gloves.
Fan and fan grilles. Cuts, eye damage,
broken bones.
Insertion of sharp objects
through the grid while the fans
are operating.
Never put objects through the pro-
tection grilles.
Internal component:
compressors and
discharge pipes Burns. Contact Avoid any contact, use protective
gloves.
Internal component:
electric cables and
metallic parts
Electrocution,
severe burns. Defect in the supply cable in- sulation, live metallic parts.
Adequate protection of power ca-
bles, ensure correct earthing of all
metal parts.
External to unit:
unit enclosure Poisoning, severe burns.
Fire due to short circuit or
overheating of the supply ca-
ble external to unit.
Size cables and mains protection
system in accordance with iee regu-
lations.
Low pressure safety
valve. Poisoning, severe burns.
High evaporating pressure
causing a refgrigerant dis-
charge during maintenance.
Carefully check the evaporating
pressure during the maintenance
operations.
High pressure safety
valve.
Poisoning,
severe burns,
hearing loss.
Activation of the high pressure
safety valve with the refriger-
ant circuit open.
If possible, do not open the refrig-
erant circuit valve; carefuly check
the condensing pressure; use all
the personal protective equipment
required by law.
Entire unit ([WHUQDO¿UH Fire due to natural disasters or combustions of elements
nearby unit
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equipment
Entire unit
Explosion, injuries, burns, poi-
soning, folgoramento for natural
disasters or earthquake.
Breakages, failures due to natu-
ral disasters or earthquake
Plan the necessary precautions both
electrical (suitable differential ma-
gneto and electrical protection of the
supply lines; greatest care during the
connections of the metal parts), and
mechanical (special anchors or sei-
smic vibrations to prevent breakages
or accidental falls ).
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MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
BANNED
Ablack symbol inside a red circle with a red diagonal indicates an action that should not be performed.
WARNING
Ablack graphic symbol added to a yellow triangle with black edges indicates danger.
ACTION REQUIRED
Awhite symbol inserted in a blue circle indicates an action that must be done to avoid a risk.
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Safety symbols combined in accordance with ISO 3864-2:
1.7 General Description of Symbols Used
Safety symbols combined in accordance with ISO 3864-2:
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MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
GENERAL RISK
Observe all signs placed next to the pictogram. The failure to follow directions may create a risk situation that may
be injurious to the user.
ELECTRICAL HAZARD
Observe all signs placed next to the pictogram.
The symbol indicates components of the unit and actions described in this manual that could create an electrical
hazard.
MOVING PARTS
The symbol indicates those moving parts of the unit that could create risk.
HOT SURFACES
The symbol indicates those components with high surface temperature that could create risks.
SHARP SURFACES
The symbol indicates components or parts that could cause stab wounds.
EARTH CONNECTION
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READAND UNDERSTAND THE INSTRUCTIONS
Read and understand the instructions of the machine before any operations.
RECOVER OR RECYCLE MATERIAL
1.8 Safety symbols used
The unit is not suitable for operations in environments:
• excessively dusty or potentially explosive atmospheres;
• where there are vibrations;
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• where there are aggressive atmospheres
The machine is designed and built exclusively for the uses described in “Limitations of use” of the technical manual.
Any other use is prohibited because it may pose a potential risk to the health of operators and users.
1.9 Limitations and prohibited use
DC-N,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO

Rev.A07-2017
9
Manufacturer: PD322111
Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto
Contains fluorinated greenhouse gasses covered by the Kyoto protocol
Modello
Model
1HMA.750S-2A 123456
2 8/2017
R410A
8 Kg 16,7 ton
2 2088
400V-3ph-50Hz
22 bar 42 bar
-30 °C
420 Kg
+130 °C -30 °C +130 °C
37,50 A 21,70 kW
Matricola
Serial number
Categoria PED
PED Category
Tipo refrigerante
Refrigerant type
Tensione-Fasi-Frequenza
Voltage-Phases-Frequency
LATO BASSA PRESSIONE
LOW PRESSURE SIDE
LATO ALTA PRESSIONE
HIGH PRESSURE SIDE
Gruppo fluido
Fluid group GWP
Carica refrigerante
Refrigerant charge
C1
C3
C2
Min Max Min Max
C4
F.L.A. (A) F.L.I. (kW)
PS
Temperatura di progetto
Design temperature
Peso a vuoto
Weight
Temperatura di progetto
Design temperature
CO2Equivalente
CO2Equivalente
Data di fabbricazione
Manifacture date
PS

MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
The product label should never be removed from the unit.
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Each unit has a rating plate that provides key information regarding the machine.
The rating plate may differ from the one shown below as the example is for a standard unit without accessories.
For all electrical information not provided on the label, refer to the wiring diagram.
An image of the label is shown below:
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Condair Group AG,
Talstrasse 35-37,
8808 Pfäffikon SZ
Manufacturer: PD322111
Contiene gas fluorurati ad effetto serra disciplinati dal protocollo di Kyoto
Contains fluorinated greenhouse gasses covered by the Kyoto protocol
Modello
Model
1DC0.075S-2 123456
1 8/2017
R410A
0,55 Kg 1,15 ton
2 2088
230V-1ph-50Hz
22 bar 42 bar
-30 °C
85 Kg
+130 °C -30 °C +130 °C
5.5 A 1.2 kW
Matricola
Serial number
Categoria PED
PED Category
Tipo refrigerante
Refrigerant type
Tensione-Fasi-Frequenza
Voltage-Phases-Frequency
LATO BASSA PRESSIONE
LOW PRESSURE SIDE
LATO ALTA PRESSIONE
HIGH PRESSURE SIDE
Gruppo fluido
Fluid group GWP
Carica refrigerante
Refrigerant charge
C1
C3
C2
Min Max Min Max
C4
F.L.A. (A) F.L.I. (kW)
PS
Temperatura di progetto
Design temperature
Peso a vuoto
Weight
Temperatura di progetto
Design temperature
CO2Equivalente
CO2Equivalente
Data di fabbricazione
Manifacture date
PS
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FAC SIMILE
LE
C SIMILE
AC
AC
SI
SI
MIL
F
1,15 ton
22 bar
5.5 A
nza
ency
A PRESSIONE
SURE SIDE
CO
2
Equivalente
O
2
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Rev.A07-2017
10
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
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2.1.6 Permissible exposure limit
R410A
HFC-32 TWA1000 ppm
HFC-125 TWA1000 ppm
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2. SAFETY
For further information regarding the characteristics of the refrigerant and oil used, refer to the safety data sheets
available from the refrigerant and oil manufacturers.
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The lubricant used is polyester oil. Please refer to the information provided on the compressor data plate.
(19,5210(17$/3527(&7,21Read the ecological information and the following instructions carefully.
Main Ecological Information Regarding the Types of refrigerants Fluids used.
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2.1.5 Exposure controls and personal protection
The refrigerants used decompose in the lower atmosphere (troposphere) relatively quickly. The decomposed products are highly dispers-
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organic compounds (as stipulated in the guidelines to the UNECE). The constituent refrigerants of R410A(R32 and R125), do not damage
the ozone layer. These substances are regulated under the Montreal Protocol (revised 1992) and regulations EC no. 2037/200 of 29 June
2000.
Discharges into the atmosphere of this product does not cause a long-term contamination.
Wear protective clothing and gloves, protect your eyes and face
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Users and maintenance personnel must be adequately informed about the possible risks of handling potentially
toxic substances. Failure to follow such instructions can cause damage to personnel or to the unit.
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heavierthanairand can form dangerous concentrations near the ground wheretheventilationrateislower.Always ensure adequate venti-
ODWLRQ$YRLGFRQWDFWZLWKRSHQÀDPHVDQGKRWVXUIDFHVDVWKLVFDQFDXVHWR[LFDQGLUULWDWLQJGHFRPSRVLWLRQSURGXFWVWRIRUP$YRLGFRQWDFW
between liquid refrigerant and the eyes or skin.
Ensure suitable personal protection (especially respiratory protection) during cleaning operations.
If deemed safe, isolate the source of the leak. If the leakage is small and if adequate ventilation is provided, allow the refrigerant to evapo-
rate. If the loss is substantial ensure that measures are taken to adequately ventilate the area.
refrigerant remaining in the system should be recovered in an environmentally sound manner conforming to the EU F-Gas Regulations
2014. Contain spilled material with sand, earth or other suitable absorbent material.
Do not allow the refrigerant to enter drains, sewers or basements, as pockets of vapor can form.
DC-N,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO

Rev.A07-2017
11
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
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2.5.1 Inhalation
A high atmospheric concentration can cause anaesthetic effects with possible loss of consciousness. Prolonged exposure may lead to
irregular heartbeat and cause sudden death. Higher concentrations may cause asphyxia due to the reduced oxygen content in the atmo-
sphere.
2.5.2 Contact with skin
Splashesofnebulousliquidcanproducefrostbite.Probablynothazardousifabsorbedtrough the skin. Repeated or prolonged contactmay
remove the skin’s natural oils, with consequent dryness, cracking and dermatitis.
2.5.3 Contact with eyes
Splashes of liquid may cause frostbite.
,QJHVWLRQ
While highly improbable, may produce frostbite.
2.6 FirstAid Measures
2.6.1 Inhalation
2.6.2 Contact with skin
Move the person away from the source of exposure, keep him/her warm and let him/her rest. Administer oxygen if necessary. Attempt
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assistance.
Incaseof contactwithskin,wash immediatelywithlukewarmwater.Thaw tissueusingwater.Removecontaminated clothing.Clothingmay
stick to the skin in case of frostbite. If irritation, swelling or blisters appear, seek medical assistance.
$GKHUHVFUXSXORXVO\WRWKHZDUQLQJVDQG¿UVWDLGSURFHGXUHVLQGLFDWHGEHORZ
2.6.3 Contact with eyes
,QJHVWLRQ
2.6.5 Further medical treatment
Rinse immediately using an eyewash or clean water, keeping eyelids open, for at least ten minutes. Seek medical assistance.
Do not inducevomiting. If the injured person isconscious, rinse his/her mouth withwater and make him/her drink200-300ml of water. Seek
immediate medical assistance.
Treat symptoms and carry out support therapy as indicated. Do not administer adrenaline or similar sympathomimetic drugs following
exposure, due to the risk of cardiac arrhythmia.
DC-N,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO

Rev.A07-2017
12
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
3.1 Unit description
'HKXPLGL¿HUVDUHKLJKSHUIRUPDQFHVXQLWVHVSHFLDOO\GHVLJQHGIRULQGXVWULDORUFRPPHUFLDOSXUSRVHVZKHUHKXPLGLW\OHYHOVKRXOGEHFRQ-
trolled or water vapor condensation should be prevented. These units are particularly indicated for archives, ironing rooms, bookstores,
cheese factories, underground rooms, cellars and industrial sites where high humidity level is present. This series comprises 6 models
which cover a capacity range from 263 to 940 l/24h. The units are designed for easy maintenance and service, each part being readily
accessible and, when required, easily replaceable thus reducing service and maintenance costs. The units are supplied with a solenoid
YDOYHVVHWIRUWKHKRWJDVLQMHFWLRQXVHGWRGHIURVWWKHHYDSRUDWRULQFDVHRIVHYHUHZRUNLQJFRQGLWLRQV9HUVLRQZLWKWHPSHUDWXUHFRQWURO
These versions are supplied with a remote condenser and are used in those applications where it is necessary the simultaneous control
RIWHPSHUDWXUHDQGKXPLGLW\'HKXPLGL¿FDWLRQPRGHWKHLQWHUQDOFRQGHQVHULVDFWLYDWHGWKHXQLWGHKXPLGL¿HVDQGKHDWVXSWKHURRP
WHPSHUDWXUH&RROLQJPRGHWKHUHPRWHFRQGHQVHULVDFWLYDWHGWKHXQLWGHKXPLGL¿HVDQGFRROVGRZQWKHURRPWHPSHUDWXUH
3.1.1 Frame
Allunits are made from hot-galvanisedthicksheetmetal, painted with polyurethane powderenamelat180°C to ensure the bestresistance
againstthe atmospheric agents. The frame is self-supportingwithremovable panels.All screws andrivetsarein stainless steel.The colour
of the units is RAL9018.
5HIULJHUDQWFLUFXLW
The refrigerant gas used in these units is R410A. The refrigerant circuit is made by using international primary brands components and ac-
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external equalizer, Schrader valves form maintenance and control, pressure safety device (according to PED regulation). All the units are
supplied with injection valves kit for hot gas defrost cycle.
3.1.3 Compressors
The compressors are rotative type, with thermal overload protection by a klixon embedded in the motor winding. The compressor is
mounted on rubber vibration dampers and it is supplied,standard, with sound-proof cover to reduce noise emission. The inspection is pos-
sible through the frontal panel of the unit that allows the maintenance of the compressor.
3.1.4 Condenser and evaporator
Condensers DQGHYDSRUDWRUVDUHPDGHRIFRSSHUSLSHVDQGDOXPLQLXP¿QV
All evaporators are painted with epoxy powders to prevent corrosion problem due to their use in aggressive environments. The diameter of
WKHFRSSHUSLSHVLV´DQGWKHWKLFNQHVVRIWKHDOXPLQLXP¿QVLVPP7KHWXEHVDUHPHFKDQLFDOO\H[SDQGHGLQWRWKHDOXPLQLXP¿QV
to improve the heat exchange factor. The geometry of these heat exchangers guarantees a low air side pressure drop and then the use of
low rotation (and low noise emission) fans.All units are supplied, standard, with a stainless steel drip tray and all evaporators are supplied
with a temperature sensor used as automatic defrost probe.
3.1.5 Supply fan
The fans are made of galvanized steel, centrifugal type. It is statically and dynamically balanced and supplied. The electric motors are
directly connected to the fan; they are all at 2 speeds, with integrated thermal protection. The protection class of the motors is IP 54.
$LUÀOWHU
ItiVPDGHRIV\QWKHWLF¿OWHULQJPHGLDXQGXODWHGW\SHZLWKRXWHOHFWURVWDWLFFKDUJHWKH\DUHDOOUHPRYDEOHIRUGLIIHUHQWLDOGLVSRVDO(I¿FLHQF\
class G5, according to EN 779:2002.
3.1.7 Microprocessors
Allunits are supplied standardwithmicroprocessor controls.The microprocessor controls thefollowingfunctions: compressor timing,auto-
matic defrost cycles, alarms.An appropriate LCD display shows the operation mode of the unit, set point and alarms.
3.1.8 Electric enclosure
Theelectricswitch boardismadeaccordingto electromagnetic compatibilitynormsCEE73/23 and 89/336.Theaccessibility totheboardis
possible after removing the front panel of the unit and the OFF positioning of the main switch. The following components are also standard
installed: main switch, magnetic-thermal switches (as a protection fans and compressors), control circuit automatic breakers, compressor
contactors, fan contactors. The terminal board is supplied with voltage free contacts for remote ON-OFF and general alarm.
3.1.9 External remote condenser
7KHUHPRWHFRQGHQVHUVDUHPDQXIDFWXUHGIURP´FRSSHUSLSHVDQGPPDOXPLQLXP¿QVZLWKWKHWXEHVEHLQJPHFKDQLFDOO\H[SDQGHG
3. TECHNICAL CHARACTERISTICS
DC-N,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
3.1.1 Frame
Allunits are made from hot-galvanisedthicksheetmetal, painted with polyurethane powderenamelat180°C to ensure the bestresistance
againstthe atmospheric agents. The frame is self-supportingwithremovable panels.All screws andrivetsarein stainless steel.The colour
of the units is RAL9006.

Rev.A07-2017
13
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
LQWRWKHDOXPLQLXP¿QVLQRUGHUWRPD[LPLVHKHDWWUDQVIHU)XUWKHUPRUHWKHGHVLJQJXDUDQWHHVDORZDLUVLGHSUHVVXUHGURSWKXVHQDEOLQJ
the use of low rotation speed (and hence low noise) fans. The fans are direct drive, axial type with aluminium aerofoil blades and are com-
SOHWHZLWKDVDIHW\JXDUG7KHPRLVWXUHSURWHFWLRQFODVVRIWKHPRWRUVLV,37KHFRQGHQVHULVDOVR¿WWHGZLWKDORZDPELHQWFRQGHQVLQJ
pressure control. This device maintains a constant condensing pressure, independant of changes in ambient temperature.
3.1.10 Control and protection devices
All units are supplied with the following control and protection devices: antifreeze protection sensor, high pressure switch with manual
reset,low pressure switch withautomaticreset, high pressure safetyvalve,compressor thermal overload protection,fansthermal overload
protection.
3.1.11 Z Version
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refrigerant lines. The use of remote condenser allows the simultaneous control of temperature and humidity, working in cooling or in dehu-
PLGL¿FDWLRQPRGH)RUDFRUUHFWRSHUDWLRQWKHXQLWVKDYHWREHFRQQHFWHGWRDUHPRWHWKHUPRVWDWK\JURVWDW
3.1.12 Test
All the units are fully assembled and wired at the factory, the refrigerant circuit is pressure tested to check for leaks then evacuated and
charged with the correct weight of R410a. They are all fully operational tested before shipment. They all conforms to European Directives
and are individually marked with the CE label and provided with Conformity Declaration.
3.2Accessories description
3.2.1 Electronic temperature and humidity probe (RGDD)
Built-in Electronic temperature and humidity probe.
3.2.2 Remote control panel (PCRL)
This panel can be mounted up to 50m (maximum) from the unit and replicates all of the control functions. It is connected using a twin cable
of 0.5 mm sq section.
3.2.3 Serial interface card RS485 (INSE)
This interface card enables the controller to comunicate with other devices using Modbus protocol.
3.2.4 E.C. Supply fan (V1CE)
The supply fan is a high performance centrifugal type, double inlet forward curved blades, directly coupled to the electric motor. The fan
wheel and the scroll are made from hot galvanised thick sheet metal, painted with polyurethane powders, to ensure the best resistance
DJDLQVWDJJUHVVLYHHQYLURQPHQWV7KHHOHFWULFPRWRULVDKLJKHI¿FLHQF\'&EUXVKOHVVW\SHZLWKH[WHUQDOURWRUWRJXDUDQWHHDQLGHDOFRROLQJ
ofthewindingsandtheabsenceofpowerlostduetopulleysandbelttransmission.Thefanisstaticallyanddynamicallybalancedclass6,3
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out thermal protection (in case of considerable reduction of the power supply), protection degree IP54, serial interface card with modbus
protocol RTU.
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&RPSOHWHZLWKHI¿FLHQF\FODVV*DFFRUGLQJWR(1DLU¿OWHUZKLFKFDQEHUHPRYHGE\WKHVLGHDQGIUDPHIRUGXFWHGLQVWDOODWLRQ
3.2.6 Rubber vibration dampers (KAVG)
To be installed beneath the unit base and the ground to avoid the transmission of vibrations (and the noise) to the building.
3.2.7 Stainless steel frame (INOX) (Indoor unit)
It’s used to ensure the best resistance against the atmospheric agents and the operation in aggressive enviroments.The frame is made of
stainless steelAISI 304, self-supporting with removable panels to facilitate inspection and maintenance of internal components.All screws
and rivets are in stainless steel.
DC-N,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO

Rev.A07-2017
14
HMA/Z 270 350 450 550 750 950
l/24h 263,1 340,2 418,8 566,8 751,1 939,3
l/24h 185,1 262,3 336,3 425,0 596,4 759,7
l/24h 161,4 233,5 302,0 375,7 534,3 680,3
l/24h 111,4 168,5 223,9 267,1 391,0 501,0
l/24h 75,6 118,3 160,9 180,2 269,8 349,6
kW 12,93 16,96 19,83 25,57 35,56 43,17
kW 4,48 5,91 7,20 8,80 12,45 15,50
kW 4,90 6,26 8,59 8,00 11,60 15,50
kW 7,50 7,99 9,85 10,30 15,60 20,10
A 17,9 14,2 17,9 18,9 28,3 38,3
A 53,6 66,9 103,9 97,9 121,3 178,3
m3/h 3500 4200 4200 5500 7000 8500
m3/h 7500 7100 6700 15000 14200 21300
Pa 50÷150 50÷150 50÷150 50÷150 50÷150 50÷150
R410A R410A R410A R410A R410A R410A
Kg 3,00 2,50 2,50 9,00 8,00 8,00
2088 2088 2088 2088 2088 2088
t 6,26 5,22 5,22 18,79 16,70 16,70
dB(A)707171737373
dB(A)636464666666
dB(A)394140404243
93K+] 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50 400/3/50
I dati relativi alla carica del refrigerante possono cambiare senza preavviso; è perciò necessario fare SEMPRE
riferimento all’etichetta argentata posta sull’unità.
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
Performances are referred to the following conditions:
(1) Sound Power level according to ISO 961, fan with available static pressure 50 Pa.
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3.3 Technical data
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0RLVWXUHUHPRYHGDW&
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6HQVLEOHFRROLQJFDS&&H[W
1RPLQDOLQSXWSRZHUDW&
Maximum input power
Maximum input current
Peak current
Air Flow indoor unit
Air Flow outdoor unit
Available static pressure
Refrigerant
Refrigerant charge
Global warming potential (GWP)
Equivalent CO2charge
Sound power (1)
Sound pressure (2)
Sound pressure (3)
Power supply
The refrigerant data may change without notice. It is therefore necessary to refer always to the silver label placed
on the unit.
DC-N,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
DC

Rev.A07-2017
15
0
100
200
50
150
250
300
3000 3200 3400 3600 3800 4000 4200 4400 4600 0
50
100
150
200
250
300
3600 3800 4000 4200 4400 4600 4800 5000
0
100
200
50
150
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3600 3800 4000 4200 4400 4600 4800 5000 0
200
400
600
100
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4600 4800 5000 5200 5400 5600 5800 6000 6200 6400
0
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6000 6200 6400 6600 6800 7000 7200 7400 7600 7800 8000 0
200
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7400 7600 7800 8000 8200 8400 8600 8800 9000
A
B
A
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A
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A
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Min Nominal Max
Min Nominal Max
Min Nominal Max Min Nominal Max
Min Nominal Max
Min Nominal Max
HMA270 HMA350
HMA450 HMA550
HMA950HMA750
(m3/h)
(m3/h)
(m3/h)
(m3/h)
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(m3/h)
(Pa)(Pa)(Pa) (Pa)(Pa)(Pa)
270 350 450 550 750 950
$+LJKVSHHG kW 0,73 1,36 1,36 1,53 3,30 3,80
A 1,50 2,80 2,80 3,60 5,50 6,70
B (Low speed) kW 0,68 0,73 0,73 1,18 3,10 3,60
A 1,40 1,50 1,50 2,20 5,20 6,40
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
3.3.1 Fans (standard - indoor unit)3.3.1 Fans
Input power
Input current
Input power
Input current
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DC 270N DC 350N
DC 450N
DC 750N
DC 550N
DC 950N

Rev.A07-2017
16
03000 3200 3400 3600 3800 4000 4200 4400 4600
100
200
300
400
500
0
100
200
300
400
500
3600 3800 4000 4200 4400 4600 4800 5000
0
100
200
300
400
500
3600 3800 4000 4200 4400 4600 4800 5000 0
100
200
300
400
500
4500 5000 5500 60004750 5250 5750 6250 6500
0
100
200
300
400
500
6000 6500 7000 7500 80006250 6750 7250 7750 0
100
200
300
400
7500 8000 8500 90007750 8250 8750 9250 9500
Min Nominal Max Min Nominal Max
Min Nominal Max Min Nominal Max
Min Nominal Max Min Nominal Max
A
B
C
F
D
E
A
B
C
F
D
E
A
B
C
F
D
E
A
B
C
F
D
E
A
B
C
F
D
E
A
B
C
F
D
E
(m3/h)
(m3/h)
(m3/h)
(m3/h)
(m3/h)
(m3/h)
(Pa)(Pa)(Pa)
(Pa)(Pa)(Pa)
HMA270 HMA350
HMA450 HMA550
HMA950HMA750
270 350 450 550 750 950
kW A kW A kW A kW A kW A kW A
A0,76 3,30 1,11 4,80 1,11 4,80 1,53 2,70 2,34 3,90 3,16 5,10
B0,46 2,00 0,55 2,40 0,55 2,40 0,95 1,70 1,48 2,60 2,42 4,10
C0,75 3,20 1,16 5,00 1,16 5,00 1,53 2,70 2,43 4,00 3,52 5,60
D0,55 2,40 0,78 3,30 0,78 3,30 1,07 2,06 2,04 3,44 3,14 5,07
E0,44 1,90 0,62 2,70 0,62 2,70 0,92 1,69 1,70 3,01 2,75 4,57
F0,73 3,10 1,14 4,90 1,14 4,90 1,49 2,60 2,42 4,10 3,60 5,70
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
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3.3.2 E.C. Supply fan (VECE) (accessory - indoor unit)3.3.2 E.C. Supply fan (VECE) (accessory)
EC fan electrical data
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DC 270N DC 350N
DC 450N
DC 750N
DC 550N
DC 950N

Rev.A07-2017
17
2
NO
1345678 2
NO
1345678
OK NO
2
NO
1345678
2
NO
1345678 2
NO
1345678 2
NO
1345678 2
NO
1345678
2
NO
1345678 2
NO
1345678 2
NO
1345678
2
NO
1
R1
3V 4V 5V 6V 7V 8V 9V 10V
R10 R2 R3 R4 R5 R6 R7 R8 R9
345678
9
9
9
9
9
9
9
9
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
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Theuseof the minimum speed ( 1 and 2)mustbecarefullyevaluatedbyskilled personnel because the operation at
very low fan speed could result in malfunction or even damage to the unit.
It is recommended to move a single micro switch for each operating speed . The displacement of two or more micro
switches may generate incorrect power supply voltages with malfunction or damage to the unit .
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3.3.3 Supply fan Microswitches (Only with VECE - indoor unit)
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UDWLRQLVGRQHDWWKHIDFWRU\EXWFDQEHPRGL¿HGE\WKHXVHUDFFRUGLQJWRWKHVSHFL¿FSODQWUHTXLUHPHQWV,QGLFDWLYHO\LWFDQEHFRQVLGHUHG
that the displacement of the micro switch from one number to the next or previous leads to an increase/decrease of the available static
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Rev.A07-2017
18
40
30
60
50
80
70
100
90
1050 152025303540
5
0
15
10
25
20
35
30
1050 15202530354045
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
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3.4 Operation limits
The units MUST be used within the operation limit indicated in the diagrams (see above). the warranty will be inva-
lidated if the units are used in ambient conditions outside the limits reported. If there is the necessity to operate in
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RH (%)
Room temperature (°C)
The units are designed to operate within false ceiling and/or heated technical room. The units are NOTsuitable for
outdoor installations and / or technical room w/o heat (attics, rooms communicating with the outside) as it may form
condensation on the walls and inside the unit cabinet causing damages.
The units are designed to work in clean ambients and with the standard characteristics of the ambient air.
It’s suitable not to install the unit in swimming pools or ambient with polluted and/or aggressive air.
Contact the Company in case of necessity.
Outdoor ambient temperature (°C)
Indoor ambient temperature (°C)
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Rev.A07-2017
19
Modd.
Lw Lp1
63 125 250 500 1K 2K 4K 8K dB dB(A) dB(A)
dB dB dB dB dB dB dB dB
270 83,1 74,3 68,2 66,7 65,6 60,2 56,8 47,7 83,9 70 63
350 84,1 75,3 69,2 67,7 66,6 61,2 57,8 48,7 84,9 71 64
450 84,1 75,3 69,2 67,7 66,6 61,2 57,8 48,7 84,9 71 64
550 86,1 77,3 71,2 69,7 68,6 63,2 59,8 50,7 86,9 73 66
750 86,1 77,3 71,2 69,7 68,6 63,2 59,8 50,7 86,9 73 66
950 86,1 77,3 71,2 69,7 68,6 63,2 59,8 50,7 86,9 73 66
Modd.
Lw Lp2
63 125 250 500 1K 2K 4K 8K dB dB(A) dB(A)
dB dB dB dB dB dB dB dB
270 59,1 50,3 44,2 42,7 41,6 36,2 32,8 23,7 59,9 46 39
350 61,1 52,3 46,2 44,7 43,6 38,2 34,8 25,7 61,9 48 41
450 60,1 51,3 45,2 43,7 42,6 37,2 33,8 24,7 60,9 47 40
550 60,1 51,3 45,2 43,7 42,6 37,2 33,8 24,7 60,9 47 40
750 62,1 53,3 47,2 45,7 44,6 39,2 35,8 26,7 62,9 49 42
950 63,1 54,3 48,2 46,7 45,6 40,2 36,8 27,7 63,9 50 43
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVwith temperature control
3.5 Sound data
Sound data - indoor unit
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Sound data - outdoor unit
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Lw: Sound power level according to ISO 9614 fan with available static pressure 50 Pa.
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pressure 50 Pa.
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pressure 50 Pa.
3.6 Safety devices
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Thehighpressureswitchstopstheunitwhenthedischargecompressorpressureishigherthanthesetvalue.Therestartisautomatic,done
when the pressure is under the level set in the differential value.
3.6.2 Defrost sensor
It’s a device which signals to the electronic control, the necessity to make the defrost cycle. Once the defrost cycle is activated, the defrost
sensor also determines termination.
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damage the system. All the units are supplied, standard, with a control which defrost automatically the heat exchanger if necessary. This
control provides a temperature probe (defrost thermostat) on the unit evaporator. When the defrost cycle is required, the microprocessor
control(according to set parameters), switchesthecompressoroff,whilethefan remains in operation.At theendofthe defrost cycle,there
is a timer delay to allow condensate water to clear from the coil.
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Rev.A07-2017
20
MTEC.6710.GB-A-1 Operation and maintenance manual HMA/Z series English
HMA/Z,QGXVWULDOGHKXPLGL¿HUVZLWKWHPSHUDWXUHFRQWURO
4. INSTALLATION
Before undertaking any task the operator must be fully trained in the operation of the machines to be used and
their controls. They must also have read and be fully conversant with all operating instructions.
All maintenance must be performed by TRAINED personnel and be in accordance with all national and local regu-
lations.
The installation and maintenance of the unit must comply with the local regulations in force at the time of the installa-
tion.
Avoid contact and do not insert any objects into moving parts.
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Whenoperatingandmaintainingtheunit, usethefollowingpersonal protectiveequipmentlistedbelowasrequired
by law.
Protective footwear.
Eye protection.
Protective gloves.
Respiratory protection.
Hearing protection.
4.2 Health and safety Considerations
4.3 Personal protective equipment
The workplace must be kept clean, tidy and free from objects that may prevent free movement.Appropriate ligh-
tingoftheworkplaceshallbe provided to allow the operator to perform the required operations safely. Poor or too
strong lighting can cause risks.
Ensure that work places are always adequately ventilated and that respirators are working, in good condition and
comply fully with the requirements of the current regulations.
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