Viessmann AWO-M-AC 101.A12 Assembly And Servicing Instructions

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This manual has been drawn up for informative purposes. The company disclaims any liability for the results of any design or any installation based on the explanations and on the technical specifications provided in this manual. Even the partial reproduction of the texts and figures in this manual is prohibited under any form. Translation of original manual. The data in this manual are not binding and can be changed by the manufacturer without prior notice

Even partial reproduction PROHIBITED © Copyright

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CONTENTS

1 PURPOSE AND CONTENTS OF THE MANUAL .............................................................................................................. 5

1.1

HOW TO KEEP THE MANUAL ........................................................................................................................................... 5

1.2

GRAPHIC SYMBOLS USED IN THE MANUAL ................................................................................................................ 5

NORMATIVE REFERENCES ............................................................................................................................................... 6

PERMITTED USE ................................................................................................................................................................... 6

4 GENERAL SAFETY GUIDELINES ...................................................................................................................................... 6

4.1

WORKERS’ HEALTH AND SAFETY ................................................................................................................................. 7

4.2

PERSONAL PROTECTIVE EQUIPMENT ........................................................................................................................... 8

4.3

SAFETY SIGNS ..................................................................................................................................................................... 8

4.4

REFRIGERANT SAFETY DATA SHEET ............................................................................................................................ 9

4.5

SPECIFIC R32 GAS WARNINGS....................................................................................................................................... 10

4.6

R32 GAS CHARGE ............................................................................................................................................................. 11

4.7

R32 GAS DISPOSAL ........................................................................................................................................................... 11

4.8

SAFETY RULES FOR R32 GAS TRANSPORT AND STORAGE .................................................................................... 11

5 INSTALLATION .................................................................................................................................................................... 11

5.1

GENERAL ........................................................................................................................................................................... 11

5.2

LIFTING AND HANDLING ............................................................................................................................................... 12

5.3

POSITIONING AND MINIMUM TECHNICAL CLEARANCES ..................................................................................... 13

5.4

DIMENSIONS ..................................................................................................................................................................... 15

5.4.1

Model Vitocal 100-A 06 / 08 ....................................................................................................................................... 15

5.4.2

Model Vitocal 100-A 10 / 12 ....................................................................................................................................... 15

5.4.3

Model Vitocal 100-A 14 / 16 ...................................................................................................................................... 16

5.5

ACCESSING THE INNER PARTS ..................................................................................................................................... 16

5.5.1

Mod. Vitocal 100-A 06 / 08 ......................................................................................................................................... 16

5.5.2

Mod. Vitocal 100-A 10 / 12 ......................................................................................................................................... 17

5.5.3

Mod. Vitocal 100-A 14 / 16 ......................................................................................................................................... 18

5.6

PLUMBING CONNECTIONS ............................................................................................................................................ 18

5.6.1

Features of the circuit water ....................................................................................................................................... 19

5.6.2

Typical plumbing diagram .......................................................................................................................................... 19

5.6.3

Handbook .................................................................................................................................................................... 20

5.6.4

Condensation discharge system .................................................................................................................................. 20

5.6.5

Filling the system ........................................................................................................................................................ 20

5.6.6

Discharge of the plant ................................................................................................................................................. 20

5.6.7

Service sleeves ............................................................................................................................................................ 21

5.6.8

Air venting valve ......................................................................................................................................................... 21

5.6.9

Vitocal 100-A 06 / 08 .................................................................................................................................................. 22

5.6.10

Vitocal 100-A 14 / 16 .................................................................................................................................................. 24

5.7

ELECTRICAL CONNECTIONS ......................................................................................................................................... 25

5.7.1

Access to the electric panel ......................................................................................................................................... 25

5.7.2

Power supply terminal block ...................................................................................................................................... 26

5.7.3

User terminal block .................................................................................................................................................... 27

5.7.4

Control logics ............................................................................................................................................................. 28

5.7.5

Fuses ........................................................................................................................................................................... 28

6 STARTUP ................................................................................................................................................................................ 28

6.1

SWITCHING ON THE UNIT .............................................................................................................................................. 29

INSTRUCTIONS FOR THE USER ...................................................................................................................................... 29

8 SHUTDOWNS FOR LONG PERIODS ................................................................................................................................ 30

9 MAINTENANCE AND PERIODIC CHECKS.................................................................................................................... 30

9.1

CLEANING THE FINNED COIL ........................................................................................................................................ 31

9.2

EXTRAORDINARY MAINTENANCE .............................................................................................................................. 32

9.3

ENVIRONMENTAL PROTECTION .................................................................................................................................. 32

10 DECOMMISSIONING .......................................................................................................................................................... 32

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10.1

R ESIDUAL RISKS .................................................................................................................................................................... 33

11 TECHNICAL DATA .............................................................................................................................................................. 40

11.1

TECHNICAL SHEET .......................................................................................................................................................... 40

11.2

UNIT AND AUXILIARY ELECTRICAL DATA ............................................................................................................... 43

12 OPERATING LIMITS ........................................................................................................................................................... 43

12.1

EVAPORATOR WATER FLOW RATE ............................................................................................................................. 43

12.2

COLD WATER PRODUCTION (SUMMER MODE) ......................................................................................................... 44

12.3

HOT WATER PRODUCTION (WINTER MODE) ............................................................................................................. 44

12.4

AMBIENT AIR TEMPERATURE AND SUMMARISED TABLE .................................................................................... 44

13 USER INTERFACE - CONTROLLER ................................................................................................................................ 47

13.1

MENU .................................................................................................................................................................................. 48

13.2

SETPOINT MENU ............................................................................................................................................................... 48

13.3

ALARMS MENU [E RR ] ....................................................................................................................................................... 48

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The manual of the Vitocal 100-A units contains all the necessary information for optimal use of the equipment under safe conditions for the operator.

1 PURPOSE AND CONTENTS OF THE MANUAL

This manual provides basic information as to the selection, installation, operation and maintenance of the

Vitocal 100-A unit. It is intended for the operators of the appliance and it enables them to use the equipment efficiently, even if they do not have any previous specific knowledge.

CAUTION: Although this manual has been drafted for the end user, some of the operations described are the responsibility of skilled personnel having technical or professional qualifications to perform the activities herein. They must also be kept up-to-date by attending refresher courses acknowledged by the competent authorities. These tasks include: installation, routine and extraordinary maintenance, decommissioning of the appliance and any other operation indicated “by qualified personnel”.

When the installation and/or maintenance operations are over, the qualified operator must correctly inform the end user regarding use of the appliance and the necessary periodical inspections.

The operator has the responsibility of submitting all of the documentation necessary (including this manual) and of explaining that it all must be kept with care, in the vicinity of the appliance and always available.

The manual describes the machine at the moment it was sold. It must therefore be considered adequate with respect to the state-of-the-art in terms of potentiality, ergonomics, safety and functionality.

The company also performs technological upgrades and does not consider itself obliged to update the manuals of previous machine versions which could even be incompatible. Therefore make sure to use the supplied manual for the installed unit.

The user is recommended to follow the instructions contained in this booklet, especially those concerning safety and routine maintenance.

1.1

HOW TO KEEP THE MANUAL

The manual has to always be kept together with the unit it refers to. It has to be stored in a safe place, away from dust and moisture. It must be accessible to all users who shall consult it any time they are in doubt on how to operate the equipment.

The company reserves the right to modify its products and related manuals without necessarily updating previous versions of the reference material. We also decline any responsibility for possible inaccuracies in the manual if due to printing or transcription errors.

The customer shall store any updated copy of the manual or parts of it delivered by the manufacturer as an attachment to this manual.

The company is available to give any detailed information about this manual and to give information regarding the use and the maintenance of its own units.

1.2

GRAPHIC SYMBOLS USED IN THE MANUAL

Indicates operations that can be dangerous for people and/or disrupt the correct operation of the unit

Indicates prohibited operations.

Indicates important information that the operator has to follow in order to guarantee the correct operation of the unit in complete safety.

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2 NORMATIVE REFERENCES

Vitocal 100-A units have been designed in compliance with the following directives and harmonized standards on the safety of machinery:

 EC directives, 2014/35/UE, 2014/30/UE, 2011/65/UE, 2012/19/UE, 2014/68/UE

 Standard UNI EN 12735-1

 Standard IEC EN 60335-1, IEC EN 60335-2-40

 Standards IEC EN 55014-1, IEC EN 55014-2, IEC EN 61000-3-2, IEC EN 61000-3-3, IEC EN 61000-3-11, IEC

EN 61000-3-12

 EN 50581

And the following directives, regulations and standards on ecodesign and energy labelling:

 Community directive 2009/125/EU and subsequent transposal

 Community directive 2010/30/EU and subsequent transposal

 EU Regulation n.811/2013

 EU Regulation n.813/2013

 EN 14511-1:2018. EN 14511-2:2018. EN 14511-3:2018. EN 14511-4:2018

 EN 14825:2018

3 PERMITTED USE

 The company excludes any contractual and extra contractual liability for damage caused to persons, animals or objects, by incorrect installation, setting and maintenance, improper use of the equipment, and the partial or superficial reading of the information contained in this manual.

 These units are built for the heating and/or cooling of water. Any other use not expressly authorised by the manufacturer is considered improper and therefore not allowed.

 The installation place and the water and electric circuit must be established by the plant designer and must take into account both technical requirements as well as any applicable local laws and specific authorisations.

 All the work must be executed by skilled and qualified personnel, competent on the existing regulations in country of installation.

 This appliance is intended to be used by expert or trained operators in shops, light industry and in factories, or for commercial use by non-expert personnel.

 The appliance may be used by children at least 8 years old and by persons with reduced physical, sensory or mental capabilities or without experience or the necessary knowledge as long as they are supervised or after they themselves have received instructions on the safe use of the appliance and understand the relevant dangers. Children must not play with the appliance. The cleaning and maintenance which the user is expected to carry out on the unit cannot be done by children without supervision.

4 GENERAL SAFETY GUIDELINES

Before starting any type of operation on the Vitocal 100-A units, every operator must be perfectly familiar with the operation of the machine and its controls and must have read and understood all the information in this manual.

It is strictly forbidden to remove and/or to tamper with any safety device.

Children or unassisted disabled persons are not allowed to use the appliance.

Do not touch the appliance when barefoot or parts of the body are wet or damp.

It is forbidden to perform any cleaning operation when the master switch is ‘ON’.

It is forbidden to pull, detach or twist the appliance’s electric cables, even if unplugged.

Do not step on, sit down on and/or place any type of object on the appliance.

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Do not spray or pour water directly on the unit.

Do not dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags, etc.) as they may represent a hazard.

Any routine or extraordinary maintenance operation must be carried out with the machine stopped and disconnected.

Do not place your hands or introduce screwdrivers, spanners or any other tools on moving parts.

The machine operator and maintenance personnel must receive suitable training for the performance of their tasks in safety.

Operators must know how to use personal protective equipment and the accident-prevention rules of national and international laws and regulations.

4.1

WORKERS’ HEALTH AND SAFETY

The European Union has issued some directives regarding the safety and health of workers, including:

89/391/EEC, 89/686/EEC, 2009/104/EC, 86/188/EEC and 77/576/EEC and subsequent amendments which every employer is obliged to follow and have followed. We observe therefore that:

Do not tamper with or replace parts of the unit without the specific consent of the manufacturer.

The manufacturer shall have no responsibility whatsoever in case of unauthorised operations.

Using components, consumables or spare parts that do not correspond to those recommended by the manufacturer and/or listed in this manual may be dangerous for the operators and/or damage the unit.

The operator’s workplace has to be kept clean, tidy and clear of objects that may hinder free movement. Appropriate lighting of the work place shall be provided so as to allow the operator to carry out the required operations safely. Poor or excessive lighting can cause risks.

Ensure that work places are always adequately ventilated and that the extraction systems are working, in good condition and in compliance with the requirements of the laws in force.

The unit works with R32 refrigerant, which is included in the list of greenhouse gases (GWP 675) which are subject to the requirements in EU regulation n. 517/2014 called “F-GAS” (mandatory in the European zone).

Among the provisions of this regulation, it sets forth that operators working on systems running with greenhouse gases be in possession of a certification, issued or acknowledged by the competent authorities, attesting that they have passed a test authorising them to perform this work. In particular

 Up to 3kg total refrigerant in the appliance: category 2 certification.

 3kg and more total refrigerant in the appliance: category 1 certification.

The gaseous form of R32 refrigerant is heavier than air and if released into the environment, most of it tends to concentrate in poorly ventilated areas. Inhaling it can cause dizziness and sensations of suffocation and can develop lethal gas if in contact with naked flames or hot objects (see the refrigerant’s safety data sheet in paragraph 4.4.

Pay attention to the fact that refrigerant fluids can be odourless

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For any operation on the heat pump system:

Wear the appropriate PPE (specifically gloves and goggles).

Make sure that the workplace is well ventilated. Do not work in closed environments or ditches with little air circulation.

Do not operate on the refrigerant in the vicinity of hot parts or naked flames.

Do not release the refrigerant into the environment and pay special attention to accidental leakage from pipes and/or fittings even after having emptied the plant.

4.2

PERSONAL PROTECTIVE EQUIPMENT

When operating and servicing the Vitocal 100-A units, the following personal protective equipment must be used:

Clothing: Maintenance technicians and operators must wear protective clothing that complies with the basic safety requirements currently in force. In case of slippery floors, they must also wear safety shoes with non-slip soles.

Gloves: During maintenance or cleaning operations, appropriate protective gloves must be used.

Mask and goggles: Respiratory protection (mask) and eye protection (goggles) should be used during cleaning operations.

4.3

SAFETY SIGNS

The unit features the following safety signs, which must be complied with:

Generic hazard

Dangerous electric voltage

Moving parts

Surfaces which can cause injuries

Boiling surfaces which can cause burns

Fire hazard

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4.4

REFRIGERANT SAFETY DATA SHEET

Name: R32.

HAZARDS IDENTIFICATION

Main hazards: Asphyxiation.

Specific hazards: Quick evaporation could cause it to freeze.

FIRST AID MEASURES

General information: Do not administer to people who are unconscious.

Inhalation:

Eye contact:

Immediately remove to fresh air.

Use oxygen or artificial respiration as required.

The use of adrenaline or similar drugs should be avoided.

Carefully rinse with plenty of water for at least 15 minutes and get medical attention.

Skin contact:

FIRE FIGHTING MEASURES

Extinguishing media: Water spray, dry powder.

Specific hazards:

Wash immediately with plenty of water for at least 15 minutes. Apply a sterile gauze.

Immediately remove contaminated clothing.

Specific methods:

Breakage or explosion of vessel.

Cool down the containers with a water spray from a safe position. Stop the product leakage if possible. Use water spray, if possible, to abate the fumes. Move the vessels away from the area of the fire if this can be done without posing any risks.

Personal precautions:

ACCIDENTAL RELEASE MEASURES

Try to stop the leak.

Evacuate personnel to safety areas.

Eliminate the ignition sources.

Ventilate appropriately.

Use personal protective equipment.

Environmental precautions:

Cleaning methods:

Try to stop the leak.

Ventilate the area.

HANDLING AND STORAGE

Handling: technical measures/precautions: advice for safe use:

Storage:

Allow efficient air exchange and/or suction the work environments.

Do not breath in fumes or aerosol.

Close carefully and store in a cool, dry and well ventilated area.

Keep in original containers. Incompatible products: explosive, flammable materials, organic peroxide

EXPOSURE CONTROLS/PERSONAL PROTECTION

Control parameters:

OEL – data not available.

DNEL: Derived no effect level (workers) long-term – systemic effects, inhalation = 7035 mg/m

PNEC: Predicted no-effect concentration water (fresh water) = 0.142 mg/l aquatic, intermittent releases = 1.42 mg/l sediment, fresh water = 0.534 mg/kg dry weight

3 .

Respiratory protection:

Eye protection:

Hand protection:

Not required.

Safety goggles.

Latex gloves.

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Hygienic measures: No smoking.

PHYSICAL AND CHEMICAL PROPERTIES

Colour: Colourless.

Odour:

Boiling point:

Ethereal. Hard to perceive at low concentrations.

-51.7°C at atm. press.

648 °C. Flash point:

Relative gas density

(air =1)

Relative liquid density

(water =1)

Solubility in water:

1.8.

1.1.

280000 mg/l.

Stability:

Materials to avoid:

Decomposition products hazardous:

STABILITY AND REACTIVITY

Stable under normal conditions.

Air, oxidizing agents, humidity.

Under normal storage and use conditions, hazardous decomposition products should not be generated.

Acute toxicity:

Local effects:

Long-term toxicity:

TOXICOLOGICAL INFORMATION

LD/LC50/inhalation/4 hours/on rat >1107000 mg/m

No known effect.

ENVIRONMENTAL INFORMATION

3 .

Global warming potential

GWP (R744=1):

675

Ozone Depletion

Potential ODP (R11=1): 0

Disposal considerations:

Refer to the supplier’s gas retrieval program. Avoid direct release into the atmosphere.

4.5

SPECIFIC R32 GAS WARNINGS

The R32 refrigerant gas:

is odourless;

is flammable, but only if there are naked flames;

it may cause an explosion, but only if a given concentration in air is reached.

It is good practice to adhere to the following indictions:

do not smoke near the unit;

affix a no smoking sign near the unit;

keep the premises where the unit is installed properly aerated;

do not pierce or burn the unit;

do not place the unit near ignition sources, such as naked flames, electric heaters etc.;

every extraordinary maintenance or repair on the unit must be performed by skilled technicians or qualified personnel;

a gas leak test must be performed after installation.

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4.6

R32 GAS CHARGE

The procedures described below may only be performed by skilled technicians or qualified personnel:

ensure the R32 is not contaminated by any other types of refrigerant;

keep the gas cylinder in an upright position when charging;

ground the refrigerant circuit

apply the appropriate label on the unit after charging;

do not charge more refrigerant gas than needed;

when charging is completed, perform leak tests before the operating test;

once all the above operations have been completed, a second leak test should be performed.

4.7

R32 GAS DISPOSAL

The procedures described below may only be performed by skilled technicians or qualified personnel:

do not dispose of the gas in areas at risk of explosive mixtures forming with air The gas should be disposed of in an appropriate torch with backfiring stop device. Contact the supplier should you require operating instructions.

4.8

SAFETY RULES FOR R32 GAS TRANSPORT AND

STORAGE

Before opening the unit’s packaging, ensure there are no gas leaks in the environment with an appropriate gas detector. Ensure there are no fire ignition sources near the unit.

No smoking is allowed near the unit.

Transport and storage must be performed in accordance with the national regulations in force. Specifically, according to ADR provisions, the total maximum quantity by transport unit in terms of net mass for flammable gases is 333 kg.

5 INSTALLATION

CAUTION: All the operation described below must be done by QUALIFIED PERSONNEL ONLY.

Before any operation on the unit, make sure that power is disconnected. Also make sure that power cannot be accidentally switched back on until all the operations are over, by means of specific locks.

5.1

GENERAL

When installing or intervening on the chiller unit, it is necessary to strictly follow the rules listed in this manual, to observe all the indications on the unit and however to take all possible precautions. Failure to comply with the rules reported on this manual can create dangerous situations.

After receiving the unit, immediately check its integrity. The unit left the factory in perfect condition; any damage must be immediately reported to the carrier and recorded on the

Delivery Note before signing it.

The company must be informed, within 8 days, of the extent of the damage. The Customer should prepare a written statement of any severe damage.

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CAUTION: The units are designed for outdoor installation. The outside temperature must never exceed 46°C. Beyond this value, the unit is no longer covered by the current regulations in the field of safety of pressure equipment.

CAUTION: The installation place must be without any fire risks. Therefore all the necessary measures should be adopted in order to prevent the risk of fire at the installation place. The appliance must not be placed near naked flames and ignition sources

CAUTION: The unit must be installed so as to allow free movement for repair and maintenance operations. The warranty does not cover costs for platforms or other lifting equipment needed for any interventions.

All the maintenance operations and tests must be done by QUALIFIED PERSONNEL ONLY.

Before any operation on the unit, make sure that power is disconnected.

Do not use equipment to speed up the defrost process or for cleaning except for those recommended by the manufacturer

The appliance must be placed in a room without ignition sources constantly running (for example naked flames, a running gas-fired appliance or a running electric heater)

Do not perforate or burn

CAUTION: There are some moving components inside the unit. Pay the utmost attention when operating in their vicinity, even if power is disconnected.

The heads and delivery pipe of the compressor are normally quite hot.

Be careful when working near the condensing coils.

The aluminium fins are very sharp and can cause serious injuries.

After the maintenance operations, close the panels by fixing them with screws.

5.2

LIFTING AND HANDLING

During unloading and positioning of the unit, utmost care must be taken to avoid abrupt or violent manoeuvres in order to protect the internal electronic components. The units can be lifted by means of a forklift or, in alternative, with belts, being sure not to damage the side panels and the cover. It is important to keep the unit horizontal during these operations.

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5.3

POSITIONING AND MINIMUM TECHNICAL CLEARANCES

All models of the Vitocal 100-A range are designed and constructed for outdoor installations.

It is advisable to create an adequately sized support base for the unit. The units transmit a small amount of vibrations to the ground: it is nonetheless advisable to apply vibration dampers between the base frame and support surface. It is very important to avoid recirculation between intake and delivery air, so as not to downgrade performance of the unit or even to interrupt its normal operation.

At least 5 m from the appliance there must be no shafts or manholes where gases might build up and generate an explosive atmosphere.

This is why the Minimum clearances shown below must be strictly guaranteed.

MODEL

AWO-M-AC 101.A06

AWO-M-AC 101.A08

AWO-M-AC 101.A10

AWO-M-AC 101.A12

AWO-M-AC 101.A14

AWO-AC 101.A14

AWO-M-AC 101.A16

AWO-AC 101.A16

A [mm] B [mm] C [mm] D [mm] E [mm]

1500 500 400 400 500

1500

500

400

500

1500 500 400 400 500

MODEL

AWO-M-AC 101.A06

AWO-M-AC 101.A08

AWO-M-AC 101.A10

AWO-M-AC 101.A12

AWO-M-AC 101.A14

AWO-AC 101.A14

AWO-M-AC 101.A16

AWO-AC 101.A16

L [mm]

500

Do not obstruct or cover the vents on the top cover.

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In the event of side-by-side units, the minimum Lmin distance between them is 1 m.

Lmin

Covering with canopies or placing near plants or walls should be avoided to prevent air recirculation.

In the event of winds stronger than 2.2 m/s the use of wind barriers is recommended.

CAUTION: It is mandatory to install the unit on a stable base capable of bearing its weight.

Considering the weight of the unit, possible vibrations and the ensuing generation of noise, it should not be installed suspended; the company in this case will not be held liable for damage or discomfort resulting thereof.

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IN/OUT: 1”M G

E: power supply input

5.4

DIMENSIONS

5.4.1

Model Vitocal 100-A 06 / 08

OUT

IN/OUT: 1”M G

E: power supply input

OUT

5.4.2

Model Vitocal 100-A 10 / 12

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5.4.3

Model Vitocal 100-A 14 / 16

IN/OUT: 1”M G

E: power supply input

OUT

5.5

ACCESSING THE INNER PARTS

5.5.1

Mod. Vitocal 100-A 06 / 08

DETAIL A

SCALE 1 : 3

DETAIL B

SCALE 1 : 4

Interlocking tab

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1) Remove the cover

2) Undo the screws (number 2; 3; 4) of the sheet metal cover of the user interface and the screw

(number 1) of the side panel to separate the front sheet metal from the side panel (Detail A).

3) Undo in sequence the screws (number 5; 6;7) in order to move the front panel slightly forward and to be able to reach the screw (number 8) visible in detail B.

4) Undo the screws (number 8; 9 visible in detail B) and those on the coil side of the unit. To remove the side panel, pull it upwards (to free the tab at the base indicated as C in detail B) and remove it.

5.5.2

Mod. Vitocal 100-A 10 / 12

DETAIL B

SCALE 1 : 5

Interlocking tab

1) Remove the cover by undoing the screws (number 1; 2; 3; 4; 5; 6; 7; 8).

2) Undo the screws (number 9; 10) of the front sheet and then push the panel downwards to remove the tabs (Detail A); pull the panel forward to remove it.

3) Undo the screws (number 11; 12;13) and those on the coil side of the unit. To remove the side panel, pull it upwards (to free the tab at the base indicated as C in detail B) and remove it.

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5.5.3

Mod. Vitocal 100-A 14 / 16

DETAIL A

SCALE 1 : 1

DETAIL B

SCALE 1 : 2

Tab

1) Remove the cover by undoing the screws (number 1; 2; 3; 4; 5; 6; 7; 8;9).

2) Undo the screws (number 10; 11) of the front sheet and then push the panel downwards to remove the tabs (Detail A); pull the panel forward to remove it.

3) Undo the screw (number 12) and those on the coil side of the unit. To remove the side panel, pull it upwards (to free the tab at the base indicated as C in detail B) and remove it.

5.6

PLUMBING CONNECTIONS

The plumbing connections must be made in accordance with national and/or local regulations; pipes can be made of steel, galvanised steel or PVC. Pipes must be accurately sized according to the nominal water flow rate of the unit and the pressure drops of the water circuit. All pipes must be insulated with closed-cell material of adequate thickness. The chiller must be connected to the pipes using new flexible joints, not reused ones. The water circuit should include the following components:

 Well thermometers to monitor the circuit’s temperature.

 Manual gate valves to isolate the chiller from the water circuit.

 Metal Y filter and dirt separator (installed on the return pipe) with metal mesh no larger than 1 mm.

 Loading group and exhaust valve where necessary.

CAUTION: when sizing the pipes, make sure not to exceed the maximum pressure drop on plant side reported in the technical data table in Paragraph 11 (see useful head).

CAUTION: connect the pipes to their fittings always using the key to key method.

CAUTION: the expansion vessel on the unit has a limited capacity. The installer is in charge of making sure that the expansion vessel is suited to the real capacity of the system, and if not, of providing an additional expansion vessel.

CAUTION: The return pipe from the system must be installed near the label “WATER INLET” otherwise the evaporator could freeze.

CAUTION: It is mandatory to install a metal filter (with mesh no larger than 1 mm) and a dirt separator on the return pipe from the system labelled “WATER INLET”. If the flow switch is manipulated or altered, or if the metal filter and dirt separator are missing, the warranty will terminate immediately. The filter and dirt separator must be kept clean. Therefore after installing the unit, you must make sure that they are still clean and check them regularly.

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All of the units leave the company supplied with flow switch (installed in factory). If the flow switch is altered or removed or if the water filter and dirt separator are missing from the unit, the guarantee will be void. Refer to the wiring diagram attached to the unit to connect the flow switch.

The heating system and the safety valves must comply with the requirements of standard EN

12828.

5.6.1

Features of the circuit water

To guarantee correct operation of the unit, the water must be appropriately filtered (see the instructions at the start of this paragraph) and there must be only a minimum amount of dissolved substances. The maximum allowed values are shown below

MAXIMUM CHEMICAL-PHYSICAL PROPERTIES ALLOWED FOR THE CIRCUIT

WATER

PH 7.5 - 9

Electrical conductivity

Total hardness

Temperature

Oxygen content

Max glycol quantity

100 - 500 μS/cm

4.5 – 8.5 dH

˂ 65°C

< 0.1 ppm

40 %

Phosphates (PO4)

Manganese (Mn)

Iron (Fe)

Alkalinity (HCO3)

Chloride ions (Cl-)

Sulphate ions (SO4)

Sulphide ions (S)

Ammonium ions (NH4)

Silica (SiO2)

˂ 2ppm

< 0.05 ppm

< 0.3 ppm

70 – 300 ppm

< 50 ppm

None

< 30 ppm

5.6.2

Typical plumbing diagram

A recommended connection diagram is shown below.

DHW probe secondary pump of fancoil from fancoil to DHW fixtures from water supply to radiant panel

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5.6.3

Handbook

If you need more information about the possible configurations, there is a handbook which is a technical notebook including a series of system diagrams that have been highlighted regarding the installation configuration of our high efficiency heat pumps. The Handbook is also intended to show the symbiosis potential with some of our elements found in the catalogue.

Consult the technical notebook at our headquarters.

5.6.4

Condensation discharge system

All Vitocal 100-A units are built in such a way that the base of the unit acts as a condensate drip tray. A plastic fitting is standard supplied to be connected below the base in the specific slot in order to connect a pipe which channels the condensate.

Gasket

All in bottom panel of outdoor unit

Drain fitting

Each unit is therefore fitted with a hole on the base of the hydronic kit (on the coil side) to drain condensation which could drip from the pipes of the plumbing system. Since these pipes are well insulated, a minimum amount of condensation is produced anyway and therefore it is not mandatory to connect a drain pipe to this fitting.

5.6.5

Filling the system

CAUTION: supervise all filling/top-up operations.

CAUTION: before filling/topping up the system, disconnect power to the units.

CAUTION: the system must always be filled/topped up in controlled pressure conditions (max 1 bar). Make sure that a pressure reducer and safety valve have been installed on the filling/topup line.

CAUTION: the water on the filling/top-up line must be appropriately pre-filtered from any impurities and suspended particles. Make sure that a removable cartridge filter and dirt separator are installed on the line.

CAUTION: regularly check and vent the air built up in the system.

CAUTION: install an automatic air venting valve at the highest point of the system.

5.6.6

Discharge of the plant

If the unit needs to be drained completely, first close the manual inlet and outlet gate valves (not included in supply) and then detach the pipes on the outside of the water inlet and outlet to drain liquid from the unit (to make this operation easier, it is recommended to install two drain valves between the unit and manual gate valves on the outside of the water inlet and outlet).

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Ring nut

Cap with gasket

When it is required to top up the circuit or to adapt the glycol level, please use the service valve. Unscrew and remove the cap from the service valve and connect a 14 or 12 mm pipe (inside diameter - check the valve model installed on your unit), connected to the water mains, to the hose connector and then drain the circuit by unscrewing the specific ring nut. After the end of the operation, retighten the ring nut and screw the cap back on. In any case it is recommended to use an external valve to fill the system which can be set up by the installer.

5.6.7

Service sleeves

2 service sleeves with cap (1/4”G) are installed in the unit’s water circuit, downstream and upstream of the circulator (ref. SM unit functional diagram paragraph 5.6.2); when disassembling/fitting on the cap use 2 spanners as pictured to prevent damaging the pipes.

5.6.8

Air venting valve

The unit is fitted with an air venting valve to automatically remove air that has built up in the circuit, preventing undesirable effects such as premature corrosion and wear, lower performance and low exchange output.

The device also features a safety function because, in the event of exchanger breakdown, it allows the refrigerant gas to escape outside, preventing it fro being conveyed to the internal terminals.

The valve can be kept in a closed position by closing the plug on the drain; by loosening the plug, the valve remains in open position and air is vented automatically.

In the event of observing a water leak, it is mandatory to replace the component, by loosening it with a wrench, as pictured below.

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FUNCTIONAL DIAGRAMS

5.6.9

Vitocal 100-A 06 / 08

CODE

CO/EV

EV/CO

EEV

YISV

MAF

RD/RS

RS/RD

NUM. DESCRIPTION

1 COMPRESSOR

CONDENSER (IN CHILLER MODE)

EVAPORATOR (IN CHILLER MODE)

ELECTRONIC EXPANSION VALVE

4-WAY CYCLE REVERSING VALVE

LIQUID RECEIVER

FILTER

FILLING CONNECTION

CRANKCASE HEATER

AXIAL FAN

MUFFLER

LIQUID SEPARATOR

INTAKE LINE

DELIVERY LINE

LIQUID LINE

DELIVERY/INTAKE LINE

INTAKE/DELIVERY LINE

KEY

CODE

H/CS

H/CR

PEHTC

PEDTR

TE SD

TE DT

PSHC

TE IE

TEOE

1.1

NUM. DESCRIPTION

UTILITY WATER OUTLET

UTILITY WATER INLET

HIGH PRESSURE TRANSDUCER

LOW PRESSURE TRANSDUCER

OUTDOOR AIR TEMPERATURE PROBE

INTAKE LINE TEMPERATURE PROBE

COMPRESSOR DISCHARGE TEMPERATURE PROBE

AUTOMATIC RESET HIGH-PRESSURE SWITCH

UTILITY INLET TEMPERATURE PROBE

UTILITY OUTLET TEMPERATURE PROBE

DRAIN VALVE

SAFETY VALVE

FLOW SWITCH

PUMP

AUTOMATIC AIR VENTING VALVE

SERVICE SLEEVE

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Vitocal 100-A 10 / 12

CODE

CO/EV

EV/CO

EEV

YISV

MAF

RD/RS

RS/RD

NUM. DESCRIPTION

1 COMPRESSOR

CONDENSER (IN CHILLER MODE)

EVAPORATOR (IN CHILLER MODE)

ELECTRONIC EXPANSION VALVE

4-WAY CYCLE REVERSING VALVE

LIQUID RECEIVER

FILTER

FILLING CONNECTION

CRANKCASE HEATER

AXIAL FAN

MUFFLER

LIQUID SEPARATOR

INTAKE LINE

DELIVERY LINE

LIQUID LINE

DELIVERY/INTAKE LINE

INTAKE/DELIVERY LINE

KEY

CODE

H/CS

H/CR

PEHTC

PEDTR

TE SD

TE DT

PSHC

TE IE

TEOE

1.1

NUM. DESCRIPTION

UTILITY WATER OUTLET

UTILITY WATER INLET

HIGH PRESSURE TRANSDUCER

LOW PRESSURE TRANSDUCER

OUTDOOR AIR TEMPERATURE PROBE

INTAKE LINE TEMPERATURE PROBE

COMPRESSOR DISCHARGE TEMPERATURE PROBE

AUTOMATIC RESET HIGH-PRESSURE SWITCH

UTILITY INLET TEMPERATURE PROBE

UTILITY OUTLET TEMPERATURE PROBE

DRAIN VALVE

SAFETY VALVE

FLOW SWITCH

PUMP

AUTOMATIC AIR VENTING VALVE

SERVICE SLEEVE

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5.6.10

Vitocal 100-A 14 / 16

CODE

CO/EV

EV/CO

EEV

YISV

MAF

RD/RS

RS/RD

NUM. DESCRIPTION

1 COMPRESSOR

1.2 CONDENSER (IN CHILLER MODE)

EVAPORATOR (IN CHILLER MODE)

ELECTRONIC EXPANSION VALVE

4-WAY CYCLE REVERSING VALVE

LIQUID RECEIVER

FILTER

FILLING CONNECTION

CRANKCASE HEATER

1.2 AXIAL FAN

MUFFLER

LIQUID SEPARATOR

INTAKE LINE

DELIVERY LINE

LIQUID LINE

DELIVERY/INTAKE LINE

INTAKE/DELIVERY LINE

KEY

CODE

H/CS

H/CR

PEHTC

PEDTR

TE SD

TE DT

PSHC

TE IE

TEOE

1.1

NUM. DESCRIPTION

UTILITY WATER OUTLET

UTILITY WATER INLET

HIGH PRESSURE TRANSDUCER

LOW PRESSURE TRANSDUCER

OUTDOOR AIR TEMPERATURE PROBE

INTAKE LINE TEMPERATURE PROBE

COMPRESSOR DISCHARGE TEMPERATURE PROBE

AUTOMATIC RESET HIGH-PRESSURE SWITCH

UTILITY INLET TEMPERATURE PROBE

UTILITY OUTLET TEMPERATURE PROBE

DRAIN VALVE

SAFETY VALVE

FLOW SWITCH

PUMP

AUTOMATIC AIR VENTING VALVE

SERVICE SLEEVE

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5.7

ELECTRICAL CONNECTIONS

Check that the power supply matches the unit’s electric nominal data (voltage, phases, frequency) displayed on the rating plate on the unit’s side panel. The electric power connections must be made in accordance to the wiring diagram enclosed with the unit and in conformity with national and international standards

(providing general circuit breaker, residual current devices for each line, proper earthing of the plant, etc.).

Power cables, electric protections and line fuses must be sized according to the specifications listed in the wiring diagram enclosed with the unit and in the electrical data contained in the table of technical characteristics (see Paragraph 11).

CAUTION: The electric panel is positioned below the cover. Respect the minimum clearances shown in chapter 5.3 to perform wiring.

CAUTION: The installer is responsible for the disconnection system (e.g. general circuit breaker) upstream of the electrical connections of the unit.

CAUTION: The supply voltage’s fluctuations cannot exceed ±10% of the nominal value. If this tolerance should not be respected, please contact our technical department

CAUTION: If the supply cable is damaged, it must be replaced by qualified personnel, in order to prevent any risk

CAUTION: The power supply has to respect the listed limits: failing this, the warranty will terminate immediately. Before beginning any type of operation, make sure that power is disconnected.

CAUTION: The flow switch (element B in the previous plumbing diagram and installed at the factory) must ALWAYS be connected according to the indications in the wiring diagram. Never jumper the connections of the flow switch in the terminal block. The warranty will no longer be considered valid if the connections of the flow switch have been altered or connected improperly.

CAUTION: The remote control panel is connected to the chiller by 4 cables with a cross-section of 1.5 mm 2 . The power cables must be separate from the remote control cables. Maximum distance 50 metres.

CAUTION: The remote control panel cannot be installed in an area with strong vibrations, corrosive gases, excessive filth or high humidity. Leave the area near the chiller clear.

5.7.1

Access to the electric panel

The following is the procedure to remove the cover. The images show sizes 14/16 but they also apply to the other sizes.

Undo the screws which secure the cover. Two on each side of the machine and two which secure the cover to the support of the cable glands. (There is just one fixing screw on the side of the smaller-sized controllers).

Remove the screws that fasten the cover of the electric panel and wire to the terminal block.

Insert the cable in the cable glands on the side of the machine to bring them outside of the unit.

Close the electric panel and the cover of the machine by reapplying the screws.

The above-mentioned operations must be carried out with the machine off and power disconnected

(by means of the specific disconnector applied by the installer).

Operations carried out by qualified personnel.

Remove the cover without removing the support

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plate of the cable glands.

When the work is finished, close all of the removed covers applying the screws and gaskets

(if included).

5.7.2

Power supply terminal block

The electrical wiring to the terminal blocks has to be done only by qualified personnel.

The electrical wiring has to be done only by qualified personnel.

The connection terminal block is below the cover of the machine. To reach it, see the instructions in paragraph 5.8.1. The terminal block must be connected according to the following notes.

The connections indicated below are standard. Other connections are shown in the MCO manual of the machine controller of the Vitocal 100-A units (see “USER AND INSTALLER CONFIGURATION TABLES”), according to the setups.

TERMINAL

X-1

X-5.2

X-5.1

CONNECTION

Connect the earth cable

Connect the neutral cable from the mains

Connect the phase cable from the mains

Connect the earth cable

Connect the neutral cable from the mains

Connect the phase cable L1 from the mains

Connect the phase cable L2 from the mains

Connect the phase cable L3 from the mains

Connection of modbus RTU signal + for remote keyboard

X-4.1

Connection of modbus RTU signal – for remote keyboard

Connection of modbus RTU earth reference for remote keyboard (GND)

X-12.1

X-12.2

X-17.1/X-

17.2

Remote keyboard power supply (12V, 50Hz, 500mA)

DHW probe (SAN1)

X-19.1/19.2 Plant remote probe (IMP1)

X-20.1/X-

Double set point (Q4)

20.2

X-22.2

X-22.1

0-10V (+) signal input to modify set point

0-10V (-) signal input to modify set point

TYPE

Inlet for power supply 1-

Ph/N/PE,230V, 50Hz

(only for sizes 06/08/10/12/14/16)

Input for power supply 3-Ph/N/PE,

400 Vac, 50Hz.

(only for sizes 14T and 16T)

Modbus communication

Output for power supply 12Vac,

50Hz

Analogue or digital input

Analogue input

Analogue input (ST10)

X-6.1/X-6.2

X-9.1/X-9.2

X-10.1/X-

10.2

X-11.1/X-

11.2

Plant heater (Rimp)

Exchanger heater (R2)

Base heater (R3)

Domestic hot water valve outlet (VS1)

Output in single phase voltage

230Vac, 50Hz, 5A resistive, 1A inductive.

Can be used in versions without KA

Output in single phase voltage

230Vac, 50Hz, 5A resistive, 1A inductive.

Can be used in versions without KA

Output in single phase voltage

230Vac, 50Hz, 5A resistive, 1A inductive.

Changeover contact, single phase voltage 230Vac, 50Hz, 5A resistive,

1A inductive.

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X-14.1/X-

14.2

X-

16.1/X16.2

X-

15.1/X15.2

Double set-point valve output (VDS1)

Changeover contact, single phase voltage 230Vac, 50Hz, 5A resistive,

1A inductive.

Summer/winter mode change input from remote (to activate the function, see the relevant paragraph in the

MCO manual)

Remote on/off input

(closed=machine on / open=machine off)

Voltage-free digital input

5.7.3

User terminal block

06/08 kW

10/12 kW

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14/16 kW

14/16 kW 3ph

5.7.4

Control logics

For the control logics, see the manual cod. MCO01110L8500.

5.7.5

Fuses

Details on the type and nominal specifications of the fuses are set out on the machine’s data plate, as well as on the fuses.

6 STARTUP

Before start-up:

 Check that the diagrams and manuals of the installed machine are available.

 Check that the wiring and plumbing diagrams of the plant the machine is connected to are available.

 Check that the shut-off valves of the water circuits are open.

 Check that the water circuit was filled under pressure and the air vented.

 Check that all the plumbing connections are installed correctly and that all the indications on the rating plates are complied with.

 Make sure that measures have been taken to discharge condensate.

 Check the electrical connection and correct fastening of all the terminals.

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 Check that the electrical connections have been made according to standards in force, including earthing.

 Voltage must match that on the unit’s rating plate.

 Make sure that the electric voltage is within the tolerance limits (±5%).

 Check that the electric heaters of the compressors are properly powered.

 Check that there are no gas leaks.

 Before switching the unit on, check that all panels are positioned correctly and well-fixed with screws.

CAUTION: The unit must be connected to the electric mains and placed in STANDBY (powered on) by closing the master switch at least 12 hours before start-up. This will allow the heaters to adequately warm up the compressor crankcase (the heaters are powered automatically when the switch is closed). The heaters are working properly if after a few minutes the temperature of the compressor crankcase is 10-15°C higher than ambient temperature.

CAUTION: check that the weight of the pipes does not bear upon the machine structure.

CAUTION: Never use the master switch to stop the unit temporarily. This must only be done to disconnect the unit from the power supply for long downtimes (e.g. seasonal stops etc.).

Furthermore power is missing, the crankcase heaters will not be powered with the risk of breaking the compressors when the unit is switched on.

CAUTION: Do not modify the electrical connections of the unit so as not to immediately terminate the warranty.

CAUTION: Summer/winter operation must be selected at the start of the relative season.

Frequent and sudden changes of this operation must be avoided so as not to damage the compressors.

CAUTION: Upon initial installation and start-up, make sure that the machine works properly both in heating and cooling mode.

6.1

SWITCHING ON THE UNIT

To supply power to the machine, turn the external handle of the disconnector to ON (“I”).

The unit display only switches on if the phase sequence is correct (inspection to be made when commissioning the unit).

Wait at least 1 minute between switching the unit off and back on again.

7 INSTRUCTIONS FOR THE USER

Write down the unit’s identification data to be able to give it to the assistance centre when requesting an intervention.

The identification plate applied on the machine has all of the technical and performance data of the appliance.

In case of tampering, removal or deterioration, ask the Technical Assistance Service for a copy.

Tampering, removal and deterioration of the identification plate complicates installation, maintenance and request for spare parts.

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We recommend keeping track of the interventions carried out on the unit so as to make any troubleshooting easier.

In case of failure or malfunctioning:

 check the type of alarm triggered to report it to the assistance centre;

 contact an authorised assistance centre;

 if requested by the assistance centre, immediately deactivate the unit without resetting the alarm;

 request that original spare parts be used.

8 SHUTDOWNS FOR LONG PERIODS

The shutdown mode of the plant depends on the site of application and the time the plant is expected to be shut down. If the unit is equipped with the antifreeze system, even when off (system on unit at “off” position), the antifreeze system keeps running if power supply continuity to the equipment is guaranteed. If the system is expected to remain idle for a long period of time, it is recommended to empty the liquid from the system unless there is an adequate amount of glycol.

To switch off the unit completely after having emptied the system:

 Switch off the unit setting the switch of each appliance at “OFF”.

 Close the water valves

 Set the general residual current device at “OFF” (if installed upstream of the system).

If the temperature drops below zero there is serious danger of frost: provide a mixture of water and glycol in the system, otherwise drain the water system and the circuits of the heat pump.

CAUTION: even the transient operation, with water temperatures below +5°C is not guaranteed on the basis of the limits established in Paragraph 12.4. Before you turn the unit back on after a long idle period, make sure that the temperature of the mixture of water and glycol is higher than or at least equal to +5°C.

9 MAINTENANCE AND PERIODIC CHECKS

CAUTION: All the operations described in this chapter MUST BE CARRIED OUT BY QUALIFIED

PERSONNEL ONLY. Before performing any intervention on the unit or accessing internal parts, make sure you have disconnected power. The heads and delivery pipe of the compressor are normally quite hot. Be careful when working near the condensing coils. The aluminium fins are very sharp and can cause serious injuries. After servicing operations, re-install the cover panels, and fix them by means of screws.

CAUTION: Before starting to operate, safety checks must be performed to ensure the combustion hazard is reduced to the minimum. The work must be undertaken according to a controlled procedure, to reduce to the minimum the risk of flammable gases or vapours while performing the work. The area must be checked with an appropriate refrigerant fluid detector before and during the work.

It is prohibited to fill the refrigerant circuits with a refrigerant other than that indicated on the identification plate. Using a different refrigerant can cause serious damage to the compressor.

It is prohibited to use oils other than those indicated in this manual. Using a different oil can cause serious damage to the compressor

The heads and delivery pipe of the compressor are normally quite hot.

Be careful when working near the condensing coils.

The aluminium fins are very sharp and can cause serious injuries.

After the maintenance operations, close the panels by fixing them with screws.

It is recommended to have specialised personnel perform periodical inspections and maintenance. The EU regulation n.517/2014 establishes that users must perform regular inspections on the plants, checking water tightness and eliminating any leaks as quickly as

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possible. Verify the mandatory nature and the documentation required in regulation n.517/2014 and its subsequent amendments or repeals.

As the manufacturer, we recommend that the following service plan is maintained (if necessary, carried out by a specialist company). Non-compliance can have a negative effect on error-free operation and the expected product service life of the heat pump.

OPERATION

Filling the water circuit.

Presence of bubbles in the water circuit.

Check the proper working of the safety and control devices.

Check that there are no oil leaks from the compressor.

Check if there is a possible water leakage from the water circuit.

Check that the flow switch works properly.

Check that the crankcase heaters are powered and running.

Clean the metal filters of the water circuit.

Clean the finned coil with compressed air.

Check that the electric terminals both inside the electric panel and in the terminal blocks of the compressor are well tightened.

Tightening of plumbing connections.

Check fixing and balancing of the fans.

Correct electric voltage.

Correct absorption.

Check the refrigerant charge.

Check the operating pressure, superheating and sub-cooling.

Circulation pump efficiency.

Check the expansion vessel.

If the unit should be out of service for a long period, drain water from the pipes and from the heat exchanger. This operation is necessary if, during seasonal stoppages, ambient temperature is expected to go down below the freezing point of the employed fluid. 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

9.1

CLEANING THE FINNED COIL

To correctly clean the coil, follow the instructions below: a) Remove any superficial filth. Debris such as leaves, fibres etc. must be removed without a vacuum cleaner (use a brush or another soft tool carefully avoiding scratching with metal or abrasive parts). If you use compressed air, pay attention to keep the air flow perpendicular to the surface of the coil in order not to bend the aluminium fins. Pay attention not to bend the fins with the nozzle of the compressed air lance. b) Rinse. Rinse with water. It is possible to use chemical substances (specific detergents for finned coils).

Rinse the coils by letting the water run inside each individual passage of the fins, until they are perfectly clean. Pay attention to direct the water jet perpendicular to the surface of the coil in order not to bend the

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aluminium fins. Do not strike the coil with the water hose. Apply your thumb at the end of the hose to increase the pressure of the water jet instead of using specific nozzles which could damage the coil.

CAUTION: Do not clean the coil using high-pressure cleaners so as not to apply excessive pressure which could cause irreparable damage. Damage caused by cleaning with unsuitable chemical substances or excessively high water pressure will not be recognised under warranty.

CAUTION: The aluminium fins are thin and sharp. Pay the utmost attention and use appropriate

PPE to avoid cuts and abrasions. Cover your eyes and face appropriately to avoid squirting water and filth while blowing. Wear waterproof shoes or boots and clothing covering your entire body.

For units installed in aggressive atmospheres with a high fouling rate, cleaning of the coil must be part of the routine maintenance program. In these types of installations, all of the dust and particulates deposited on the coils must be removed as soon as possible through regular cleaning according to the methods shown above.

9.2

EXTRAORDINARY MAINTENANCE

All extraordinary maintenance jobs must be carried out by an authorised assistance centre.

9.3

ENVIRONMENTAL PROTECTION

Legislation regulating the use of substances harmful for the ozone layer establishes the prohibition of releasing refrigerant gases into the environment. In fact at the end of their service life, these must be retrieved and handed over to specific collection facilities. The R32 refrigerant is mentioned among substances subject to the special controls set forth by law and therefore must abide by the obligations indicated above. Special attention is therefore recommended during maintenance so as to reduce refrigerant leaks as far as possible.

10 DECOMMISSIONING

Once the unit has reached the end of its life cycle and needs to be replaced, the following operations are recommended:

 the refrigerant has to be recovered by trained personnel and sent to proper collection centres;

 any antifreeze additives in the water circuit must be recovered and disposed of properly;

 the compressors’ lubricating oil has to be collected and sent to proper collection centres;

 the electronic components, such as regulators, driver boards and inverters, must be disassembled and sent to proper collection centres;

 the structure and the different components, if unusable, must be scrapped and divided according to their nature; there is especially a good amount of copper and aluminium in the machine.

These operations allow easy material recovery and the recycling process, thus reducing the environmental impact.

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The user is responsible for the proper disposal of this product, according to national regulations in the country of destination of the appliance. For more information you should contact the Installation Company or local competent authority.

An incorrect decommissioning of the appliance may create serious environmental damage and endanger people’s safety. Therefore, it is recommended that the unit be disposed only by authorised persons with technical training who have attended training courses acknowledged by the competent authorities.

It is required to follow the same precautions described in the previous paragraphs.

Pay special attention during disposal of the refrigerant gas.

The illegal disposal of the product by the end user leads to the application of the penalties in accordance with the law in the country where the disposal takes place.

The crossed-out bin symbol applied on the appliance indicates that the product, at the end of its useful life, must be collected separately from other solid/municipal waste.

The units are manufactured in accordance with the EC directive on waste of electric/electronic equipment and the harmful effects of incorrect disposal are provided in the user/installer manual. The manufacturing company or its importer/retailer is available to respond to any requests for additional information.

10.1

Residual risks

This paragraph sets forth any residual risks which cannot be eliminated by the manufacturer in the design stage.

Risk due to:

Handling

Installation

Dust/Water in the electric panel

Maintenance

Fan

Refrigerant gas leakage

Water leaks

Precautions/Corrections

There is always the risk of the unit falling or tipping over during handling. Follow the instructions in the “Handling” section and take all of the precautions foreseen according to local regulations.

Unsuitable installation can cause water leaks, gas leaks, electric shocks, fire hazards, malfunctioning or damage of the unit. Only qualified technical personnel can perform installation.

Place the unit in an appropriate area and without the risk of flammable gas leaks. Make the installation zone inaccessible to third parties.

Fasten the panel of the electrical switchgear correctly. Any infiltrations can cause shocks and short-circuits causing personal harm and damage to property or to the unit itself.

Pay special attention to the earthing connection.

During maintenance, which must always be carried out by authorised personnel, make sure that the disconnector is off and that no one can accidentally modify the disconnection measures of the appliance from the unit by means of specific warnings and an adequate padlock.

Contact with the fan can cause injury and/or death. Do not access the unit or remove the protections while the fan is running.

Wear suitable PPE as a gas leakage could cause injury and intoxication. Carefully read the

“Safety data sheet of the refrigerant” included in the manual. Do not make use of heat sources near the circuit before it is completely discharged.

These can cause personal harm and property damage and risk a short circuit. We recommend positioning the shut-off valves.

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■

Every person working on the refrigerant circuit must be able to produce a certificate of competence issued by an organisation with industry accreditation. This certificate confirms their competence in the safe handling of refrigerants by means of a standard industry procedure.

Servicing work may only carried out in accordance with the manufacturer's specifications. If maintenance and repair work requires assistance from additional individuals, the person trained in the handling of flammable refrigerants must constantly supervise the work.

In order to minimise the risk of ignition, safety checks must be carried out before any work on appliances with flammable refrigerants can commence. Take the following measures before interfering with the refrigerant circuit:

Measure

1 General working environment

■ Inform the following persons of the type of work to be carried out:

– All maintenance personnel

– All persons in the vicinity of the system.

■

Cordon off the area around the heat pump.

Survey the immediate surroundings of the heat pump for flammable materials and sources of ignition:

Remove all flammable materials and sources of ignition.

Completed Notes

Checking for the presence of refrigerant

■ In order to recognise a flammable atmosphere in time:

Before, during and after the work, check the surrounding area for any escaping refrigerant, using an explosion-proof refrigerant detector suitable for R32.

This refrigerant detector must not generate any sparks and must be suitably sealed.

Fire extinguisher

A CO

or powder extinguisher must be at hand in the following cases:

■ Refrigerant is being topped-up.

■ Welding or brazing/soldering work is being carried out.

Sources of ignition

■ When carrying out work on a refrigerant circuit that contains or previously contained flammable refrigerant, never use sources of ignition that could ignite the refrigerant.

■

Remove all possible sources of ignition, including cigarettes, from the area where installation, repair, dismantling or disposal work is taking place that may result in refrigerant escaping.

Before starting work, survey the immediate surroundings of the

■ heat pump for flammable materials and sources of ignition:

Remove all flammable materials and sources of ignition.

Display no smoking signs.

5 Ventilating the work location

■ Carry out repairs outdoors, or provide adequate ventilation for the work location before interfering with the refrigerant circuit or commencing any welding or brazing/soldering work.

■ The ventilation must be maintained for the entire duration of the work. The ventilation should dilute any refrigerant that may escape and should ideally discharge it to atmosphere.

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Measure

6 Checking the refrigeration system

■ Any replacement electrical components must be suitable for the application and must correspond to the manufacturer’s specifi- cation. Only replace faulty components with genuine spare

■ parts.

Carry out all component replacements in accordance with guidelines. If necessary, consult Werke technical services.

Perform the following checks:

■ The refrigerant charge must not be greater than permitted for

■ the installation room.

Check the function of the ventilation system. The ventilation

■

■ apertures must not be blocked or obstructed.

If a hydraulically separated system is used, check the secondary circuit for the presence of any refrigerant.

Labels and symbols must always be clearly visible and legible.

Replace any illegible information.

Refrigerant lines and components must be installed in such a manner that they do not come into contact with substances that can cause corrosion.

Exception: The refrigerant lines are made from corrosion-resist- ant materials or are reliably protected against corrosion.

Completed

7 Checks on electrical components

■ Safety checks must be carried out for maintenance and repair

■ work on electrical components: See below.

In the event of a safety-related fault, do not connect the system until the fault has been remedied.

If it is not possible to remove the fault immediately, provide a suitable interim solution for the system’s operation if required.

Inform the system operator.

Carry out the following safety checks:

■ Discharge the capacitors: Ensure no sparks are created when

■ discharging.

Do not position any live electrical components or cables in the

■ immediate vicinity of the appliance when filling or extracting refrigerant or when flushing the refrigerant circuit.

Check the earth connection.

Notes

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Measure

Repairs on sealed enclosures

■ When carrying out work on sealed components, fully isolate the appliance from the power supply, also before removing sealed covers.

■ If a power supply is absolutely necessary during the work: Posi- tion a continuously operating refrigerant detector in the most critical locations, to provide warning of any potentially danger-

■

■ ous situation.

Pay special attention to ensuring that any work on electrical components does not lead to any changes to the enclosures that would affect their protective properties. This includes damage to leads, too many connections on a single terminal, connections that do not correspond to the manufacturer’s specifica- tion, damage to seals, as well as incorrect installation of cable entries.

Ensure the appliance is correctly installed.

■ Check that the seals have settled. Ensure by checking that the seals reliably prevent the ingress of a flammable atmosphere.

Replace defective seals.

■

Silicone as a sealant can affect the function of leak detection devices.

Do not use silicone as a sealant.

Spare parts must correspond to the manufacturer’s specifications.

Work on components which are suitable for flammable atmospheres: It is not imperative that these components are isolated from the power supply.

Completed

Repairs on components that are suitable for flammable atmospheres

■ Do not connect any continuous capacitive or inductive loads to the appliance, unless it has been ensured that the permissible

■

■ voltages and currents are not exceeded.

In areas where flammable atmospheres exist, only apply voltage to components which are suitable for flammable atmospheres.

Only use original parts or parts approved. Other parts may result in refrigerant becoming igni- ted in the event of a leak.

Wiring

■ Check whether the wiring is subject to wear, corrosion, tension, vibration, sharp edges or other unfavourable environmental in-

■ fluences.

When checking, also take into account the effects of ageing and continuous vibration on the compressor and fans.

Refrigerant detectors

■ On no account use possible sources of ignition for refrigerant

■ detection or leak detection.

Flame leak detectors or other detectors with open flames must not be used.

Notes

6020930

Measure

12 Leak detection

The following leak detection processes are suitable for systems with flammable refrigerants:

Leak detection with electronic refrigerant detectors:

■ Electronic refrigerant detectors may not have the required sensi- tivity or may need to be calibrated to the relevant range. Carry

■

■ out the calibration in refrigerant-free surroundings.

The refrigerant detector must be suitable for the R32 refrigerant to be detected.

The refrigerant detector must not contain any potential sources of ignition.

Calibrate the refrigerant detector to the refrigerant used. Set the response threshold to < 3 g/a, suitable for propane.

Leak detection with liquid leak detectors:

■ Liquid leak detectors are suitable for use with most refrigerants.

Completed

Please note

Liquid leak detectors containing chlorine may react with the refrigerant. This could result in corrosion.

Do not use liquid leak detectors that contain chlorine.

Measures to take if a leak in the refrigerant circuit occurs:

■ Immediately extinguish all open flames in the vicinity of the heat

■ pump.

If brazing/soldering work needs to be undertaken to remedy the leak, always extract all the refrigerant from the refrigerant circuit.

Purge the site to be brazed/soldered before and during the brazing/soldering work with oxygen-free nitrogen.

Extracting the refrigerant

Removal and evacuation

When breaking into the refrigerant circuit to make repairs – or for any other purpose – conventional procedures shall be used.

However, it is important that best practice is followed since flammability is a consideration. The following procedure shall be adhered to:

- remove refrigerant;

- purge the circuit with inert gas;

- evacuate;

- purge again with inert gas;

- open the circuit by cutting or brazing.

The refrigerant charge shall be recovered into the correct recovery cylinders. The system shall be “flushed” with OFN to render the unit safe. This process may need to be repeated several times.

Compressed air or oxygen shall not be used for this task.

Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to fill until the working pressure is achieved, then venting to atmosphere, and finally pulling down to a vacuum. This process shall be repeated until no refrigerant is within the system. When the final OFN charge is used, the system shall be vented down to atmospheric pressure to enable work to take place. This operation is absolutely vital if brazing operations on the pipe-work are to take place.

Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is ventilation available.

Topping up the refrigerant

Charging procedures

In addition to conventional charging procedures, the following requirements shall be followed.

– Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as

Notes

16 short as possible to minimise the amount of refrigerant contained in them.

– Cylinders shall be kept upright.

– Ensure that the refrigeration system is earthed prior to charging the system with refrigerant.

– Label the system when charging is complete (if not already).

– Extreme care shall be taken not to overfill the refrigeration system.

Prior to recharging the system it shall be pressure tested with OFN.

The system shall be leak tested on completion of charging but prior to commissioning. A follow up leak test shall be carried out prior to leaving the site

Decommissioning

Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be taken in case analysis is required prior to re-use of reclaimed refrigerant. It is essential that electrical power is available before the task is commenced. a) Become familiar with the equipment and its operation. b) Isolate system electrically. c) Before attempting the procedure ensure that:

- mechanical handling equipment is available, if required, for handling refrigerant cylinders;

- all personal protective equipment is available and being used correctly;

- the recovery process is supervised at all times by a competent person;

- recovery equipment and cylinders conform to the appropriate standards. d) Pump down refrigerant system, if possible. e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from various parts of the system. f) Make sure that cylinder is situated on the scales before recovery takes place. g) Start the recovery machine and operate in accordance with manufacturer's instructions. h) Do not overfill cylinders. (No more than 80 % volume liquid charge). i) Do not exceed the maximum working pressure of the cylinder, even temporarily. j) When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are removed from site promptly and all isolation valves on the equipment are closed off. k) Recovered refrigerant shall not be charged into another refrigeration system unless it has been cleaned and checked.

Identification (labelling the heat pump)

If the heat pump has been taken out of use, affix a label to the heat pump in a clearly visible position containing the following information with date and signature:

■ Refrigerant is flammable.

■

The system has been taken out of use.

The refrigerant has been removed.

38 6020930

17 Recovering the refrigerant and compressor oil

Recovery

When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely.

When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge are available. All cylinders to be used are designated for the recovered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of refrigerant). Cylinders shall be complete with pressure relief valve and associated shut-off valves in good working order. Empty recovery cylinders are evacuated and, if possible, cooled before recovery occurs.

The recovery equipment shall be in good working order with a set of instructions concerning the equipment that is at hand and shall be suitable for the recovery of flammable refrigerants.

In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release. Consult manufacturer if in doubt.

The recovered refrigerant shall be returned to the refrigerant supplier in the correct recovery cylinder, and the relevant Waste

Transfer Note arranged. Do not mix refrigerants in recovery units and especially not in cylinders.

If compressors or compressor oils are to be removed, ensure that they have been evacuated to an acceptable level to make certain that flammable refrigerant does not remain within the lubricant. The evacuation process shall be carried out prior to returning the compressor to the suppliers. Only electric heating to the compressor body shall be employed to accelerate this process.

When oil is drained from a system, it shall be carried out safely.

6020930

11 TECHNICAL DATA

Cooling

Heating

Compressor

Refrigerant

External zone fans

Internal heat exchanger

Water circuit

Noise level

TECHNICAL SPECIFICATIONS

Electrical data

Cooling capacity (1) min/nom/max

Input power (1)

E.E.R. (1)

Cooling capacity (2) min/nom/max

Input power (2)

E.E.R. (2)

SEER (5)

Water flow rate (1)

User side heat exchanger pressure drops

(1)

Nominal useful head (1)

Heating capacity (3) min/nom/max

Input power (3)

C.O.P. (3)

Heating capacity (4) min/nom/max

Input power (4)

C.O.P. (4)

SCOP (6)

Water flow rate (4)

User side heat exchanger pressure drops

(4)

Nominal useful head (4)

Energy efficiency water 35°C / 55°C

Type

Refrigerant oil (type)

Number of compressors

Oil charge (amount)

Refrigerant circuits

Type

Refrigerant charge (7)

Amount of refrigerant in equivalent CO

2 tonnes (7)

Design pressure (high/low) heat pump mode

Design pressure (high/low) chiller mode

Type

Number

Internal heat exchanger type

No. internal heat exchangers

Water content

Water content of hydronic circuit

Maximum water side pressure

Plumbing fittings

Minimum water volume

Nominal circulator output

Maximum circulator output

Max circulator absorbed current

Energy Efficiency Index (EEI) circulator

Sound power level L w

(8)

Sound pressure level at a distance of 1m

Lp1 (9)

Sound pressure level at a distance of

10m L p10

(9)

Power supply

Maximum input power

Maximum input current

11.1

TECHNICAL SHEET kW kW

W/W kW kW

W/W

L/s kPa kPa

Class kW kW

W/W kW kW

W/W

L/s kPa kPa

Unit of measurement

AWO-M-AC

101.A06

3.20 / 5.02 /

5.52*

1.60

3.14

4.82 / 6.18 /

6.80*

1.28

4.82

4.12

0.24

2.0

78.8

3.95 / 6.08 /

6.99*

1.35

4.51

3.82 / 5.88 /

6.76*

1.66

3.54

4.46

0.28

2.1

75.8

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL RB74AF

0.67

R32

1.5

1.0 bar bar bar inch

L kW kW

A dB(A) dB(A) dB(A) kW

L kg ton

42.8/1.3

42.8/3.5

DC Brushless motor

3.5

15.1

0.9

1.4

1"M

0.075

0.38

≤ 0.21

49.8

32.8

Vitocal 100-A

AWO-M-AC

101.A08

AWO-M-AC

101.A10

3.80 / 6.08 /

6.69*

1.99

3.05

4.91 / 7.72 /

8.49*

1.76

4.38

4.25

0.28

4.66 / 7.53 /

8.28*

2.39

3.15

6.22 / 9.50 /

10.45*

2.15

4.41

4.15

0.36

2.8

76.0

3.95 / 7.81 /

8.98*

1.78

4.38

3.80 / 7.58 /

8.72*

2.17

3.50

4.46

0.37

3.3

66.3

6.9

68.9

5.33 / 10.10 /

11.62*

2.28

4.43

5.18 / 9.76 /

11.22*

2.80

3.48

4.53

0.47

9.7

55.2

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL

RB74AF

0.67

R32

1.5

1.0

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL VG74

R32

2.5

1.7

0.9

1.4

1"M

0.075

0.38

≤ 0.21

49.8

32.8

42.8/1.3

42.8/3.5

DC Brushless motor

42.8/1.3

42.8/3.5

42.8/1.3

42.8/3.5

DC Brushless motor DC Brushless motor

1 1

1.2

1.8

1"M

0.075

0.38

≤ 0.21

49.4

1.2

1.8

1"M

0.075

0.38

≤ 0.21

50.4

3.9

17.0

AWO-M-AC

101.A12

4.55 / 8.51 /

9.36*

2.79

3.05

6.41 / 11.60 /

12.76*

2.79

4.16

4.25

0.41

8.8

63.4

5.33 / 11.80 /

13.57*

2.73

4.32

5.13 / 11.47 /

13.19*

3.33

3.44

4.47

0.55

13.1

43.4

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL VG74

R32

2.5

1.7

32.7 33.7

4.6

20.2

230V/1/50Hz

5.1

22.1

6020930

Dimensions and weights

Maximum input power with antifreeze kit

Maximum input current with antifreeze kit

A - Length

B - Depth

C - Height

Shipping weight kW

A mm mm mm kg

3.6

15.6

924

377

828

4.0

17.6

924

377

828

4.8

20.7

1047

455

936

110

5.2

22.7

1047

455

936

110

Operating weight kg 72 72 96 96

Performance referring to the following conditions, according to standard 14511:2018:

(1) Cooling:

(2) Cooling:

(3) Heating:

(4) Heating:

(5) Cooling:

(6) Heating: outdoor air temperature 35°C; in/out water temperature 12/7°C. outdoor air temperature 35°C; in/out water temperature 23/18°C. outdoor air temperature 7°C db 6°C db; in/out water temp 30/35°C. outdoor air temperature 7°C db 6°C db; in/out water temp 40/45°C. in/out water temperature 7/12°C. average climatic conditions; Tbiv=-7°C; in/out water temp 30/35°C.

(7) Indicative data subject to changes. For the correct value, always refer to the technical label on the unit. with that required by the Eurovent certification.

(9) Sound pressure level: value calculated from the sound power level using ISO 3744:2010

(*) activating the maximum Hz function

(8) Sound power level: heating mode condition (3); value determined based on measurements made in accordance with standard UNI EN ISO 9614-2, compliant

6020930

TECHNICAL SPECIFICATIONS

Cooling

Heating

Cooling capacity (1) min/nom/max

Input power (1)

E.E.R. (1)

Cooling capacity (2) min/nom/max

Input power (2)

E.E.R. (2)

SEER (5)

Water flow rate (1)

User side heat exchanger pressure drops (1)

Nominal useful head (1)

Heating capacity (3) min/nom/max

Input power (3)

C.O.P. (3)

Heating capacity (4) min/nom/max

Input power (4)

C.O.P. (4)

SCOP (6)

Water flow rate (4)

User side heat exchanger pressure drops (4)

Nominal useful head (4)

Energy efficiency water 35°C / 55°C

Compressor

Refrigerant

Type

Refrigerant oil (type)

Number of compressors

Oil charge (amount)

Refrigerant circuits

Type

Refrigerant charge (7)

Amount of refrigerant in equivalent CO

tonnes (7)

Design pressure (high/low) heat pump mode

Design pressure (high/low) chiller mode

External zone fans

Internal heat exchanger

Water circuit

Noise level

Electrical data

Type

Number

Internal heat exchanger type

No. internal heat exchangers

Water content

Water content of hydronic circuit

Maximum water side pressure

Plumbing fittings

Minimum water volume

Nominal circulator output

Maximum circulator output

Max circulator absorbed current

Energy Efficiency Index (EEI) circulator

Sound power level L w

(8)

Sound pressure level at a distance of 1m Lp1 (9)

Sound pressure level at a distance of 10m L p10

(9)

Power supply

Maximum input power

Maximum input current kW kW

W/W kW kW

W/W

L/s kPa kPa

Class

Unit of measurement kW kW

W/W kW kW

W/W

L/s kPa kPa

L kg ton

AWO-M-AC 101.A14

Vitocal-100A

AWO-AC 101.A14 AWO-M-AC 101.A16 AWO-AC 101.A16

6.87 / 11.48 / 12.05* 6.87 / 11.48 / 12.05* 5.99 / 13.80 / 14.49* 5.99 / 13.80 / 14.49*

3.53

3.25

3.53

3.25

4.38

3.15

4.38

3.15

9.17 / 14.00 / 14.70* 9.17 / 14.00 / 14.70* 9.20 / 15.80 / 16.59* 9.20 / 15.80 / 16.59*

2.59

5.40

4.62

0.55

12.9

75.0

2.59

5.40

4.62

0.55

12.9

75.0

3.15

5.02

4.80

0.66

17.5

62.3

3.15

5.02

4.80

0.66

17.5

62.3

7.54 / 14.10 / 15.23* 7.54 / 14.10 / 15.23* 7.36 / 16.30 / 17.60* 7.36 / 16.30 / 17.60*

2.91

4.85

2.91

4.85

3.49

4.67

3.49

4.67

7.23 / 13.56 / 14.64* 7.23 / 13.56 / 14.64* 7.06 / 15.77 / 17.03* 7.06 / 15.77 / 17.03*

3.55

3.82

4.48

0.65

3.55

3.82

4.48

0.65

4.24

3.72

4.49

0.76

4.24

3.72

4.49

0.76

13.0

63.6

13.0

63.6

17.6

48.5

17.6

48.5

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL VG74

1.4

R32

3.6

2.4

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL VG74

1.4

R32

3.6

2.4

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL VG74

1.4

R32

2.7

A+++/A++

Twin Rotary

DC Inverter

ESTEL OIL VG74

1.4

R32

2.7 bar bar

L bar inch

L kW kW

A dB(A) dB(A) dB(A) kW

42.8/1.3

42.8/3.5

DC Brushless motor

1.7

3.0

1"M

0.14

1.10

≤ 0.23

52.7

36.6

230V/1/50Hz

6.6

28.6

42.8/1.3

42.8/3.5

DC Brushless motor

1.7

3.0

1"M

0.14

1.10

≤ 0.23

52.7

36.6

6.6

9.5

Plate

400V/3P+N+T/50Hz

42.8/1.3

42.8/3.5

DC Brushless motor

1.7

3.0

1"M

0.14

1.10

≤ 0.23

52.7

36.6

230V/1/50Hz

7.0

30.4

42.8/1.3

42.8/3.5

DC Brushless motor

1.7

3.0

1"M

0.14

1.10

≤ 0.23

52.7

36.6

400V/3P+N+T/50Hz

7.0

10.1

42 6020930

Dimensions and weights

Maximum input power with antifreeze kit

Maximum input current with antifreeze kit

A - Length

B - Depth

C - Height

Shipping weight kW

A mm mm mm kg

6.7

29.2

1044

448

1409

134

6.7

9.7

1044

448

1409

148

7.1

31.0

1044

448

1409

140

7.1

10.3

1044

448

1409

154

Operating weight kg 121 136 126 141

Performance referring to the following conditions, according to standard 14511:2018:

(1) Cooling:

(2) Cooling:

(3) Heating:

(4) Heating:

(5) Cooling: outdoor air temperature 35°C; in/out water temperature 12/7°C. outdoor air temperature 35°C; in/out water temperature 23/18°C.

(6) Heating: outdoor air temperature 7°C db 6°C db; in/out water temp 30/35°C. outdoor air temperature 7°C db 6°C db; in/out water temp 40/45°C. in/out water temperature 7/12°C. average climatic conditions; Tbiv=-7°C; in/out water temp 30/35°C.

(7) Indicative data subject to changes. For the correct value, always refer to the technical label on the unit.

(8) Sound power level: heating mode condition (3); value determined based on measurements made in accordance with standard UNI EN ISO 9614-2, compliant with that required by the Eurovent certification.

(9) Sound pressure level: value calculated from the sound power level using ISO 3744:2010

(*) activating the maximum Hz function

N.B. performance data are indicative and are subject to change. Furthermore the performance declared in points (1), (2), (3) and (4) is intended to refer to instantaneous power according to EN 14511. The value declared in point (5) and (6) is determined according to UNI EN 14825.

CAUTION: The minimum temperature allowed for storing the units is 5°C.

Unit power supply

On board controller circuit

V/~/Hz

11.2

UNIT AND AUXILIARY ELECTRICAL DATA

12/1/50

Remote controller circuit

Fans power supply

V/~/Hz

12/1/50

230/1/50

For sizes 06, 08, 10, 12, 14 and 16* - For sizes 14T, 16T

NOTE: The electrical data are subject to change due to updates. It is therefore always necessary to refer to the technical specifications label applied on the right side panel of the unit.

12 OPERATING LIMITS

12.1

EVAPORATOR WATER FLOW RATE

The nominal water flow rate refers to a 5°C temperature difference between the evaporator inlet and outlet.

The maximum permitted flow rate features a 3°C temperature difference while the minimum one has an 8°C temperature difference at the nominal conditions as shown in the technical sheet.

Insufficient water flow rates can cause excessively low evaporation temperatures causing the safety devices to trigger and stopping the unit and, in some extreme cases, forming ice in the evaporator and resulting in serious failures to the cooling circuit.

For greater details, we have attached a table below with the minimum flow rates for the plate heat exchanger to guarantee proper operation according to the model (please note: the water flow switch is applied to protect against failed triggering of the antifreeze probe due to the lack of flow but does not guarantee the minimum water flow rate required for correct operation of the unit).

6020930

Model

06 08 10 12 14

3ph

Minimum water flow to be assured in chiller mode

(condition (1) technical sheet) [l/s]

Maximum water flow to be assured in chiller mode

(condition (1) technical sheet) [l/s]

Minimum flow switch water flow rate* [l/s]

Maximum flow switch water flow rate* [l/s]

0.15

0.40

0.117

0.132

0.17

0.46

0.117

0.132

0.23

0.60

0.153

0.175

0.25

0.68

0.153

0.175

0.34

0.92

0.153

0.175

0.34

0.92

0.262

0.293

* When the flow rate drops below the indicated limit (flow switch minimum water flow rate) the flow switch issues an alarm, which may be reset only upon reaching the maximum indicated flow rate.

12.2

COLD WATER PRODUCTION (SUMMER MODE)

A minimum temperature of 5°C is allowed at the evaporator outlet: for lower temperatures, contact the

Technical Department. In this case contact our technical department to study the feasibility and assess the changes to be made according to demands. A maximum temperature of 25°C can be maintained at the evaporator outlet in steady-state operation.

12.3

HOT WATER PRODUCTION (WINTER MODE)

When the system has reached steady state, the water inlet temperature must not drop below 25°C: lower values, not due to transient phases or reaching steady-state, can cause system failures and could possibly break the compressor. The maximum outlet water temperature must not exceed 60°C.

There could be failures to the regular operation of the unit or, in more critical cases, the safety devices could be triggered due to temperatures higher than those indicated, especially if coupled with reduced water flow rates.

12.4

AMBIENT AIR TEMPERATURE AND SUMMARISED TABLE

The units are designed and built to operate in summer mode, with condensation control, at outdoor air temperatures between -10°C and +46°C. In heat pump mode, the allowed temperature range of the outdoor air is from-20°C to +40°C depending on the outlet water temperature as shown in the table below.

44 6020930

HEAT PUMP MODE

Operating limits

Water chiller mode

Room temperature

Outlet water temperature

Heat pump mode

Room temperature

Outlet water temperature

Heat pump mode for domestic hot water

Room temperature with water at maximum 39°C

Room temperature with water at maximum 55°C

Outlet water temperature

Minimum -10°C Maximum +46°C

Minimum +5°C Maximum +25°C

Minimum -20°C Maximum +30°C

Minimum +25°C Maximum +60°C

Minimum -20°C Maximum +40°C

Minimum -10°C Maximum +35°C

Minimum +25°C Maximum +60°C

The following are the graphical operating limits for air-conditioning and domestic hot water production.

Heating

6020930

CHILLER MODE

DOMESTIC HOT WATER MODE

Cooling

DHW mode

46 6020930

13 USER INTERFACE - CONTROLLER

The unit includes a display placed underneath a hinged polycarbonate transparent door with a protection rating of IP67.

The interface has a part with variable text and a series of icons identifying operation of the unit as shown in the table below.

Compressor LED

Domestic hot water LED

Defrost LED

 ON if the compressor is running

 OFF if the compressor is off

 FLASHING if pending the timed compressor start

 ON if sanitary mode enabled

 OFF if sanitary mode disabled

 FLASHING if DHW production in progress (sanitary valve on)

 ON if defrosting enabled

 OFF if defrosting disabled or finished

 FLASHING if defrosting time interval count in progress

Antifreeze heater LED  LED ON if antifreeze heater on.

Pump LED  LED ON if pump running.

Alarm LED  LED ON if an alarm is triggered.

Heating mode LED  LED ON if unit is in heating mode.

Cooling mode LED  LED ON if unit is in cooling mode.

The buttons have the specific function described below

Mode

Esc

Select the operating mode and manually reset any alarms.

Each time you press the key you have the following sequence: off  cool  heat  off

If DHW is enabled, the sequence is the following: off  cool  cool+san  heat  heat+san  off

While setting the parameters, this key has the function of sending BACK by one level.

6020930

PRG

Grants access to the parameter setting menu and allows you to set the summer, winter and sanitary setpoint.

UP key. In the parameter setting mode, it allows you to move to a higher menu or to increase the parameter value when in “edit” mode.

DOWN key. In the parameter setting mode, it allows you to move to a lower menu or to decrease the parameter value when in “edit” mode.

In standard operation, the display shows the water outlet temperature in tenths of Celsius degrees or the alarm code if at least one is active. If several alarms are triggered, the first one is displayed while the second one will be displayed as soon as the first one is reset. In menu mode, the display depends on the current position

13.1

The following are the main features for navigating the menus, especially describing functions which are not obvious. The main menu has the following items:

Setpoint

Probes

LABEL

Set tP

PASSWORD LEVEL

User

Installer

OTHER CONDITIONS

Not accessible if connected to Hi-t2

---

Alarms

Digital inputs

Parameters

Password

Err

Par

PSS

User

Installer

User

Only if active alarms

---

Hours of operation

USB oHr

USb

Installer

---

Only with pen drive with relevant update files

Version, Revision and Sub Firmware Version Fir Installer

Alarm log Hist Installer Only if the log contains data

The PSS menu is accessed to enter the service password and to enable access with a higher user permission. When you have exited the menus, the password must be entered once again to re-enter.

13.2

SETPOINT MENU

The various setpoints can be viewed and edited.

SETPOINT

Coo

Hea

DESCRIPTION

First Summer setpoint

First Winter setpoint

*San

Coo2

Hea2

Sanitary setpoint

Second Summer setpoint

Second Winter setpoint

(*) If the DHW function is enabled

UNIT DEFAULT

°C 7.0

°C 45.0

°C

48.0

18.0

35.0

13.3

ALARMS MENU [Err]

RANGE

5 - Co2

25 - 60

Coo - 25

25Hea

This menu is only displayed if there are triggered alarms. All of the active alarms can be seen. This is a multicircuit machine. Therefore all the alarms are divided by circuit (label ALCx grants access to the alarms of circuit number x).

48 6020930

6020930

50 6020930

6020930

52 6020930

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