CLIMAVENETA BRA2 0021, BRA2 0031, BRA2 0041, BRA2 0025, BRA2 0061 Installation, User And Maintenance Manual

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Water chillers and air/water heat pumps with centrifugal fans

BRA2 0021÷0061 BRN2 0021÷0061

INSTALLATION, USER AND MAINTENANCE MANUAL

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BRA2 - BRN2 EN

INDEX

The manufacturer reserves the right to modify the data in this manual without warning.

ENVIRONMENTAL INFORMATION: This unit contains fluorinated greenhouse gases covered by the Kyoto Protocol. The maintenance and disposal operations must only be carried out by qualified personnel.

General warnings 3

Waiver of liability 3

Fundamental safety rules 3

Identification 4

Receiving, handling and installing the 4 product

Characteristics 5

Dimensioned drawings 6

Water connections 7

Air ducting 11

Electrical connections 13

Mains power supply connections 14

Installer connections 14

General technical data 16

Operating limits 18

Pressure drop and pressure head available 19 to system

Fan pressure gain curves 21

Checking and starting up the unit 22

Led e displays 23

Displaying alarms 32

Peak limiter alarm signals 33

Operating characteristics 35

Shutting down for long periods 36

Routine maintenance 36

Special maintenance 36

Disposal 36

Troubleshooting 37

Useful information 39

U I A

AAI

I A

I AU

U I A

UIA

I A

User

Installer

Assistance

Important

Prohibition

Danger voltage

Danger high temperatures

The following symbols are used in some parts of this publication and inside the unit:

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BRA2 - BRN2 EN

GENERAL WARNINGS

U I A

These appliances have been designed to chill and/or

heat water and must be used in applications compatible with their performance characteristics; these appliances are designed for residential or similar applications. Incorrect installation, regulation and maintenance or improper use absolve the manufacturer from all liability, whether contractual or otherwise, for damage to people, animals or things. Only those applications specifically indicated in this list are permitted Read this manual carefully. All work must be carried out by qualified personnel in conformity with legislation in force in the country concerned.

The warranty is void if the above instructions are not respected and if the unit is started up for the first time without the presence of personnel authorised by the Company (where specified in the supply contract) who should draw up a “start-up” report.

The documents supplied with the unit must be consigned to the owner who should keep them carefully for future consultation in the event of maintenance or service. When the items are consigned by the carrier, check that the packaging and the unit are undamaged. If damage or missing components are noted, indicate this on the delivery note. A formal complaint should be sent via fax or registered post to the After Sales Department within eight days from the date of receipt of the items. All repair or maintenance work must be carried out by the Company’s Technical Service or qualified personnel following the instructions in this manual. Do not modify or tamper with the appliance as this may create situations of danger; in such cases the manufacturer of the appliance is not liable for any damage caused.

FUNDAMENTAL SAFETY RULES

U I A

WAIVER OF LIABILITY

U I A

When operating equipment involving the use of electricity and water, a number of fundamental safety rules must be observed, namely:

This publication is the sole property of Climaveneta. Any reproduction or disclosure of such is strictly prohibited without the written authorisation of Climaveneta. This document has been prepared with maximum care and attention paid to the content shown. Nonetheless, Cli- maveneta waives all liability deriving from the use of such document. Read this document carefully.

All work must be performed, components selected and materials used professionally and in complete accordance with the legislation in force in material in the country concerned, and considering the operating conditions and intended uses of the system, by qualified personnel.

The unit must not be used by children or by unfit persons without suitable supervision. Do not touch the unit with bare feet or with wet or damp parts of the body. Never perform any cleaning operations before having disconnected the unit from the mains power supply. Do not modify safety or control devices without authorisation and instructions from the manufacturer. Do not pull, detach or twist the electrical cables coming from the unit, even when disconnected from the mains electricity supply. Do not open doors or panels providing access to the internal parts of the unit without first ensuring that the mains switch is in the off position. Do not introduce pointed objects through the air intake and outlet grills. Do not dispose of, abandon or leave within reach of children packaging materials (cardboard, staples, plastic bags, etc.) as they may represent a hazard.

Power supply to the unit must be disconnected using a switch with suitable characteristics, to be supplied and installed by the installer.

Respect safety distances between the unit and other equipment or structures. Guarantee adequate space for access to the unit for maintenance and/or service operations (see the figure on page 5). Power supply: the size of the electrical cables must be adequate for the power of the unit and the power supply voltage must correspond with the value indicated on the respective units. All units must be earthed in conformity with legislation in force in the country concerned.

Some terminals in the electrical panel may be powered even after the unit is disconnected. Make sure power is not connected before proceeding. Water connections should be carried out as indicated in the instructions to guarantee correct operation of the unit. Add glycol to the water circuit if the unit is not used during the winter or the circuit is not emptied. Handle the unit with the utmost care (see weight distribution table) to avoid damage.

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BRA2 - BRN2 EN

MODEL:

VOLTAGE:

CODE:

De' Longhi S.p.a. - 31100 Treviso / Italia Via L.Seitz, 47 - tel. 04224131 fax 0422413659

COOLING CAPACITY ------------------- kW HEATING CAPACITY ------------------- kW REFRIGERANT TYPE ------------------REFRIGERANT CHARGE ------------------- Kg MAXIMUM PRESSURE ------------------- bar MAIN ELECTRICAL POWER SUPPLY ------------------- V---Hz AUXILIARY ELECTRICAL POWER SUPPLY ------------------- V---Hz MAX. POWER INPUT ------------------- kW MAX. CURRENT INPUT ------------------- A START-UP CURRENT ------------------- A WIRING DIAGRAM ------------------- N° OPERATING WEIGHT ------------------- Kg YEAR OF FABRICATION -------------------

IDENTIFICATION

U I A

The chiller can be identified by the:

Packaging label

Giving the data identifying the product.

Rating plate

Giving the technical and performance data of the unit. If this is lost, ask the After Sales Service for a replacement.

Tampering with or the removal or absence of rating plates or other means enabling the unit to be identified causes problems during installation and maintenance.

RECEIVING, HANDLING AND INSTALLING THE PRODUCT

I A

The chillers are supplied accompanied by:

- installation, user and maintenance manual;

- CE declaration;

CHOICE OF INSTALLATION SITE

Before installing the unit, agree with the customer the site where it will be installed, taking the following points into consideration:

• Check that the fixing points are adequate to support the weight of the unit;

• Pay scrupulous respect to safety distances between the unit and other equipment or structures to ensure that air entering the unit and discharged by the fans is free to circulate.

HANDLING AND POSITIONING

The unit should always be handled by qualified personnel using equipment adequate for the weight of the chiller.

• Before handling the unit, check the capacity of the lift equipment used, respecting the instructions on the packaging.

• To move the unit horizontally, make appropriate use of a lift truck or similar, bearing in mind the weight distribution of the unit. To lift the unit, insert tubes long enough to allow positioning of the lifting slings and safety pins in the special feet on the unit. For the sizes of these tubes, see the figures shown in the corresponding section.

• To avoid the slings damaging the unit, place protection between the slings and the unit. Position the unit in the site indicated by the customer. Place either a layer of rubber (min. thickness 10 mm) or vibration damper feet (optional) between the base and support surface. Fix the unit, making sure it is level and that there is easy access to water and electrical components. If the site is exposed to strong winds, fix the unit adequately using tie rods if necessary. If a heat pump unit is being installed, make sure the condensate is drained using the drain hose supplied as standard.

Prevent leaves, branches or snow from accumulating around the unit. These could reduce the efficiency of the unit.

The installation, user and maintenance manual is an integral part of the unit and should therefore be read and kept carefully. It is recommended that the packaging should not be removed until the unit is located in the installation site. During transport, the chiller should be kept in a vertical position The weight of the chiller is biased towards the compressor side (side of the packaging with the barcode, see the figure at the foot of the page).

Do not dispose of packaging materials in the environment or leave them within reach of children as they may represent a hazard.

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BRA2 - BRN2 EN

CHARACTERISTICS

I A

BAR CODE

Hole Ø22

The BRA2 and BRN2 appliances are air-water units operating on R-410A and refrigerant are suitable for outdoor installation. The units are CE marked, as established by the EU directives, including the latest amendments, and the corresponding approximated national legislation.

They are factory tested and on site installation is limited to water and electrical connections.

219

1 Electrical panel 2 Control panel 3 Heat exchanger installation side 4 Low pressure switch 5 High pressure switch 6 Scroll compressor 7 Filter 8 Thermostatic valve 9 Centrifugal fan 10 Heat exchanger external side 11 Pump (accessory) 12 Liquid receiver (BRN2 only) 13 Expansion tank

(models WITH HYDRONIC UNIT only) 14 Reversing valve (BRN2 only) 15 Fan board

BRA2 Dimensions and weight with standard packaging

Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Dimension L mm 970 970 970 970 970 970 Dimension P mm 660 660 660 660 660 710 Dimension H mm 840 1140 1140 1440 1440 1590 Weight

Kg 125 140 145 190 210 220

BRN2 Dimensions and weight with standard packaging Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Dimension L mm 970 970 970 970 970 970 Dimension P mm 660 660 660 660 660 710 Dimension H mm 840 1140 1140 1440 1440 1590 Weight

Kg 135 150 155 205 225 235

BRA2 Dimensions and weight with wooden crate Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Dimension L mm 1070 1070 1070 1070 1070 1070 Dimension P mm 760 760 760 760 760 810 Dimension H mm 890 1190 1190 1490 1490 1640 Weight difference

Kg 150 170 175 225 245 265

BRA2 Dimensions and weight with wooden crate Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Dimension L mm 1070 1070 1070 1070 1070 1070 Dimension P mm 760 760 760 760 760 810 Dimension H mm 890 1190 1190 1490 1490 1640 Weight difference

Kg 160 180 185 240 260 280

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600

900

=E=

400

* For installation with open outlet, the minimum distance is increased from 400mm to 1500mm

BRA2 - BRN2 EN

DISEGNI DIMENSIONALI

HYDRAULIC CONNECTIONS

I A

The choice and installation of components is the responsibility of the installer who should follow good working practice and current legislation. Before connecting the pipes, make sure they do not contain stones, sand, rust, dross or other foreign bodies which might damage the unit. Construction of a bypass is recommended to enable the pipes to be washed through without having to disconnect the unit (see drain valves). The connection piping should be supported in such a way as to avoid it weighing on the unit. It is recommended that the following devices are installed in the water circuit of the evaporator:

1. Two pressure gauges with a suitable scale (inlet and outlet).

2. Two vibration damper joints (inlet and outlet).

3. Two gate valves (normal in inlet and calibrating in outlet).

4. A flow switch on the unit outlet to the system circuit (compulsory). The flow switch must be calibrated by the installer to a value equal to 70% of rated flow.

5. Due termometri (in ingresso e in uscita).

6. An intake filter must be installed as close as possible to the evaporator and positioned to allow easy access for routine maintenance. 500 micron filter

7. All the pipes must be insulated with suitable material to prevent the formation of condensate and heat loss. The insulating material must be a vapour barrier. Make sure that the control and shut-off devices protrude from the insulation.

8. At the lowest points in the system, install drain valves for easy emptying.

9. At the highest points in the system, install automatic or manual air vent valves.

Failure to install the flow switch will mean the heat exchanger is not protected in the event of no flow of liquid. Climaveneta cannot be held liable for any damage to the unit and/or the system following the failure to install these devices or the filter. The correct operation of the components that help ensure the safety of the appliance and the system should be checked regularly. Specifically, this involves cleaning the filters and checking the operation of the flow switches installed. Water flow to the chiller unit must conform to the values shown in the section on “General Technical Data”. The flow of water must be maintained constant during operation. The water content of the unit must be such as to avoid disturbing operation of the refrigerant circuits.

Dimension 0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

A 900 900 900 900 900 900 B 640 940 940 1240 1240 1390 C 580 580 580 580 580 630 D 320 320 320 320 320 370 E 580 580 580 580 580 580

Weight Distribution BRA2 0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

W1 30 35 36 48 54 57 W2 11 12 13 17 19 20 W3 23 26 27 36 40 42 W4 41 47 49 64 72 76 TOT 105 120 125 165 185 195

Weight Distribution BRN2 0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

W1 33 38 39 52 58 61 W2 12 13 14 18 20 21 W3 25 28 30 40 44 46 W4 45 51 53 70 78 82 TOT 115 130 135 180 200 210

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BRA2 - BRN2 EN

Minimum system water content Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Minimum water content BRA2

l 18 21 24 31 36 44

Minimum water content BRN2

l 25 35 40 50 55 65

Expansion vessel size Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Expansion vessel BRA2 l 2 2 2 2 2 2 Expansion vessel BRN2 l 2 2 2 2 2 5

Safety valve calibration Size

0021M-T 0025M-T 0031M-T 0041M-T 0051T 0061T

Safety valve l 6 6 6 6 6 6

FACTORY CONNECTED INSTALLER CONNECTIONS

UTILITY RETURN

UTILITY OUTLET

System water circuit connection diagram, BRA2 version WITHOUT HYDRONIC KIT

1 PRESSURE GAUGE 2 VIBRATION-ISOLATING JOINT 3 SHUT-OFF VALVE 4 CALIBRATING VALVE 5 FLOW SWITCH 6 THERMOMETER 7 CIRCULATOR PUMP 8 SAFETY VALVE 9 EXPANSION VESSEL 10 MESH FILTER 11 FILL/TOP-UP 12 TEMPERATURE PROBE 13 DIFFERENTIAL PRESSURE

SWITCH

14 DRAIN/CHEMICAL WASHING

VALV E

15 SYSTEM VENT

FACTORY CONNECTED INSTALLER CONNECTIONS

UTILITY RETURN

UTILITY OUTLET

System water circuit connection diagram, BRA2 version WITHOUT HYDRONIC KIT

SWITCH

14 DRAIN/CHEMICAL WASHING

VALV E

15 SYSTEM VENT

UTILITY RETURN

UTILITY OUTLET

FACTORY CONNECTED INSTALLER CONNECTIONS

121512

System water circuit connection diagram, BRN2 version WITH HYDRONIC KIT

SWITCH

14 DRAIN/CHEMICAL WASHING

VALV E

15 SYSTEM VENT

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BRA2 - BRN2 EN

UTILITY RETURN

UTILITY OUTLET

FACTORY CONNECTED INSTALLER CONNECTIONS

System water circuit connection diagram, BRN2 version WITH HYDRONIC KIT

SWITCH

14 DRAIN/CHEMICAL WASHING

VALV E

15 SYSTEM VENT

Must be provided with a filling/top-up system connected to the return line and a drain cock in the lowest part of the installation. Installations containing antifreeze or covered by specific legislation must be fitted with water circuit disconnectors.

The manufacturer is not liable for obstruction, breakage or noise resulting from the failure to install filters or vibration dampers. Particular types of water used for filling or topping up must be treated with appropriate treatment systems. For reference values, see the table.

Risk of freezing

The unit must be prevented from freezing at outside air temperatures around 0°C. The following are recommended:

• use suitable percentages of antifreeze (see “Ethylene glycol solutions”)

• protect the piping with heating sheaths,

• empty the system, making sure no water remains at the lowest points in the circuit or there are closed valves where water may stagnate.

It is recommended to use non-toxic food grade antifreeze, compliant with the standards in force in the countries where the unit is used, if domestic hot water production is also featured. The antifreeze used must be corrosion inhibited and compatible with the water circuit components.

Ethylene glycol solutions

Water and ethylene glycol solutions used as a heat carrier in the place of water reduce the performance of the unit. Multiply the performance figures by the values given in the following table.

The heat pumps must be fitted with a filling/top-up system connected to the return line and a drain valve in the lowest part of the system. Systems containing antifreeze or covered by specific legislation must be fitted with low-loss headers.

cPf

cdp

0 1 1 1

12%

0,985

1,02 1,07

20% 0,98 1,04 1,11

28% 0,974 1,075

1,18

35% 0,97 1,11 1,22

40%

0,965

1,14 1,24

0 -5 -10 -15 -20 -25

Freezing point (°C)

Percentage of ethylene glycol by weight

cPf: cooling capacity correction factor cQ: flow rate correction factor cdp: pressure drop correction factor

Water quality

The water used in the system and domestic hot water circuits must comply with the following characteristics:

PH 6-8 Electrical conductivity less than 200 mV/cm (25°C) Chlorine ions less than 50 ppm Sulphuric acid ions less than 50 ppm Total iron less than 0.3 ppm Alkalinity M less than 50 ppm Total hardness less than 50 ppm Sulphur ions none Ammonia ions none Silicon ions less than 30 ppm

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BRA2 - BRN2 EN

Condensate drain

In heating mode the unit produces a significant quantity of condensate, which must be suitably drained. Proceed as follows:

• Connect the unit condensate drain

• Make sure the drain hose has a incline of at least 2 cm/m, without obstructions or choking.

• Connect the condensate drain hose to a rainwater drain. Do not connect to the sewage system as odours may be sucked up if the water in the drain trap evaporates.

• After connecting, check correct drainage of the condensate by pouring water into the pan.

• If necessary, suitably insulate the condensate drain hose.

• Condensate drainage must not cause problems to objects or people.

• If the outside air temperature is less than 0°C, the condensate may freeze.

Use hot wires on the condensate drain hose downstream of the unit to protect against frost.

Safety valve

OUT

Safety valve

BRA2 BRN2

Dimensions

0021 0025-0031 0041-0051 0061

A mm 72 372 431 581 B mm 516 516 757 757 C mm 62 62 62 62 D* mm 65 65 65 65 Water connections in/out, male Ø 1” 1” 1”1/4 1”1/4

*D Safety valve connector position, only on the models with hydronic kit

SIZE AND POSITIONING OF CONNECTIONS, BRA2 AND BRN2

Fouling factors

The performance data given refer to conditions with clean evaporator plates (fouling factor = 1). For different fouling factors, multiply the figures in the performance tables by the coefficient given in the following table.

f1: capacity correction factor fk1: compressor power input correction factor fx1: total power input correction factor

4,4 x 10

-5

0,86 x 10

-4

1,72 x10

-4

0,96 0,93

0,99 0,98

Fouling factors (m2°C/W) f1

Evaporator

fk1 fx1

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BRA2 - BRN2 EN

FILLING THE SYSTEM

- Before filling, check that the system drain valve is closed.

- Open all system and terminal air vents.

- Open system shut off valves.

- Start filling by slowly opening the system water fill cock outside the unit.

- When water begins to leak out of the terminal air vent valves, close them and continue filling until the pressure gauge indicates a pressure of 1.5 bar.

The system must be filled to a pressure of between 1 and 2 bars. It is recommended that this operation be repeated after the unit has been operating for a number of hours. The pressure of the system should be checked regularly and if it drops below 1 bar, the water content should be topped-up.

Check the tightness of the joints.

EMPTYING THE SYSTEM

- Before emptying, place the mains switch in the “off” position.

- Make sure the system fill/top-up water cock is closed.

- Open the drain cock outside the unit and all the system and terminal air vent valves.

If the fluid in the circuit contains antifreeze, it should not be allowed to drain freely, as it is pollutant.It should be collected for possible reuse.When draining after heat pump operation, take care as the water may be hot (up to 50°).

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BRA2 - BRN2 EN

AIR DUCTING

The BRA2-BRN2 models are designed for indoor and outdoor installation. The cooling air outlet can be ducted to the outside

Ducting the air outlet

The air outlet ducting connection has the following characteristics.

LMNO

LMN O

The length of the outlet ducts must be established by qualified personnel, considering the performance of the fan shown in the table "General technical data"

Suitable measures should be taken to avoid the bypass of air between the outlet and intake.

For the heat pump appliances, the section of ducting inside the environment must be suitably insulated.

Use vibration damper joints on the duct fittings.

The outlet is supplied as standard on the side; for sizes 0021 - 0031 only, the air outlet can be turned from the side to the top position

Model 0061 Model 0041 - 0051 Model 0025 - 0031 Model 0021

BRA2 - BRN2 0021 0025 0031 0041 0051 0061

A mm 203 203 203 203 203 203

B mm 640 900 900 1240 1240 1390

C mm 486 556 556 521 521 521

D mm - - - 521 521 521

E mm 13 18 18 18,5 18,5 18,5

F mm 18 18 18 18 18 18

G mm 53 218 218 81,5 81,5 104

H mm - - - 11,5 11,5 121,5

I mm 62 127 127 27 27 52

L mm 19,5 19,5 19,5 19,5 19,5 19,5

M mm 19,5 19,5 19,5 19,5 19,5 19,5

N mm - - - 19,5 19,5 19,5

O mm - - - 19,5 19,5 19,5

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The appliance is factory fitted with the air outlet in position A (side).

To move it to position B (top) for model 0021.

- Undo the fastening screws and remove the fan holder cover P on the air outlet collar.

- Unscrew the four fastening bolts and remove the air outlet collar.

- Turn the air outlet collar 90° clockwise and fasten the four bolts that were removed previously.

- Replace the fan holder cover P with the fan fitted and tighten the fastening screws.

To move it to position B (top) for models 0025 - 0031.

- Undo the fastening screws and remove the protection grill.

- Undo the fastening screws and remove the closed panel F.

- Invert the protection grid G with the panel F.

- Tighten the fastening screws..

BRA2 - BRN2 EN

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BRA2 - BRN2 EN

ELECTRICAL CONNECTIONS

I A

The BRA2 and BRN2 units leave the factory already wired, and require the installation of an omnipolar thermal overload switch, a lockable mains disconnecting switch for the connection to the mains power supply, and the connection of the flow switch to the corresponding terminals. All the above operations must be carried out by qualified personnel in compliance with the legislation in force. For all electrical work, refer to the electrical wiring diagrams in this manual.You are also recommended to check:

- that the characteristics of the mains electricity supply are adequate for the absorptions indicated in the electrical characteristics table below, also bearing in mind

Power to the unit must be turned on only after installation work (hydraulic and electrical) has been completed. All electrical connections must be carried out by qualified personnel in accordance with legislation in force in the country concerned. Respect instructions for connecting phase, neutral and earth conductors. The power line should be fitted upstream with a suitable device to protect against short-circuits and leakage to earth, isolating the installation from other equipment.

Voltage must be within a tolerance of ±10% of the rated power supply voltage for the unit (for three phase units, the unbalance between the phases must not exceed 2%). If these parameters are not respected, contact the electricity supply company. For electrical connections, use double insulation cable in conformity with current legislation in the country concerned.

An omnipolar thermal overload switch and a lockable mains disconnecting switch, in compliance with the CEI-EN standards (contact opening of at least 3mm), with adequate switching and residual current protection capacity based on the electrical data table shown below,must be installed as near as possible to the appliance.

The devices on the unit must be lockable. An efficient earth connection is obligatory. Failure to

earth the appliance absolves the manufacturer of all liability for damage. In the case of three phase units, ensure the phases are connected correctly.

Do not use water pipes to earth the unit.

ELECTRICAL DATA, BRA2 AND BRN2 WITHOUT HYDRONIC KIT

F.L.I. Maximum power input F.L.A. Maximum current input S.A. Start-up current S.A. LIM Peak current with peak limiter Maximum values for sizing the protection switches and power supply cables

Size

Power supply Maximum values Fuses (5x20T 250V)

(V-Ph-Hz) FLA [A] FLI [kW] SA [A] SA LIM [A] FU1 FU2 FU3

BRA2 - BRN2 0021 230-1N-50 18,4 3,42 63,4 29,4 4A 3,15A 2A BRA2 - BRN2 0025 230-1N-50 21,4 4,19 84,4 39,4 4A 3,15A 2A BRA2 - BRN2 0031 230-1N-50 25,4 5,09 99,4 46,4 4A 3,15A 2A BRA2 - BRN2 0041 230-1N-50 29,4 6,34 134,7 49,7 4A 6,3A 2A BRA2 - BRN2 0021 400-3N-50 7,9 3,42 34,4 20,4 4A 3,15A 2A BRA2 - BRN2 0025 400-3N-50 8,4 3,95 37,4 21,4 4A 3,15A 2A BRA2 - BRN2 0031 400-3N-50 10,4 4,76 50,4 28,4 4A 3,15A 2A BRA2 - BRN2 0041 400-3N-50 12,4 6,36 68,7 39,7 4A 6,3A 2A BRA2 - BRN2 0051 400-3N-50 14,2 6,42 68,7 39,7 4A 6,3A 2A BRA2 - BRN2 0061 400-3N-50 17,4 7,75 78,7 45,7 4A 6,3A 2A

ELECTRICAL DATA, BRA2 AND BRN2 WITH HYDRONIC KIT

F.L.I. Maximum power input F.L.A. Maximum current input S.A. Start-up current S.A. LIM Peak current with peak limiter Maximum values for sizing the protection switches and power supply cables

Size

Power supply Maximum values Fuses (5x20T 250V)

(V-Ph-Hz) FLA [A] FLI [kW] SA [A] SA LIM [A] FU1 FU2 FU3

BRA2 - BRN2 0021 230-1N-50 19,0 3,50 64,0 30,0 1,25A 1,25A 2A BRA2 - BRN2 0025 230-1N-50 22,0 4,27 92,2 40,0 1,25A 3,15A 2A BRA2 - BRN2 0031 230-1N-50 26,0 5,17 100,0 47,0 1,25A 3,15A 2A BRA2 - BRN2 0041 230-1N-50 30,3 6,47 135,7 50,7 1,25A 6,3A 2A BRA2 - BRN2 0021 400-3N-50 8,5 3,50 35,0 21,0 1,25A 1,25A 2A BRA2 - BRN2 0025 400-3N-50 9,0 4,03 38,0 22,0 1,25A 3,15A 2A BRA2 - BRN2 0031 400-3N-50 11,0 4,84 51,0 29,0 1,25A 3,15A 2A BRA2 - BRN2 0041 400-3N-50 13,3 6,49 69,7 40,7 1,25A 6,3A 2A BRA2 - BRN2 0051 400-3N-50 15,1 6,55 69,7 40,7 1,25A 6,3A 2A BRA2 - BRN2 0061 400-3N-50 18,3 7,88 79,7 46,7 1,25A 6,3A 2A

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BRA2 - BRN2 EN

MAINS POWER SUPPLY CONNECTIONS

I A

• Before connecting the unit to the power supply, makes sure that switch QF1 is open, suitably padlocked and marked.

• Remove the inspection panel by unscrewing the screws.

• Use cable gland A for the main electrical power cable and cable gland B for other external cables to be connected by the installer.

• Identify the terminals used for electrical connections on the layout drawing shown in this manual.

• Make the connections as shown on the wiring diagram enclosed with the product.

• Replace the covers on the electrical panel and the closing panel.

• Make sure that all the covers removed to make the electrical connections have been replaced before powering up the unit.

• Position the main switch QF1 (outside the unit) in the “ON” position.

INSTALLER CONNECTIONS

I A

All terminals referred to in the explanations below are to be found on the terminal block inside the electrical panel and described as “installer terminals” (see the wiring diagram enclosed with the product).

REMOTE ON/OFF (SA1)

To use a remote on/off device, an external contactor must be connected to installer terminals 14 and 15, setting parameter CL42 to -1 (CL42=-1). For timed operation, connect a daily or weekly timer between terminals 14 and 15.

REMOTE ALARM (RD1)

For remote display of unit shut-down, an audible or visual alarm warning device can be connected between terminals 12 and 13. Connect the phase to terminal 13 and the alarm signal device between terminal 13 and the neutral (maximum load applicable 500 mA at 24 V).

REMOTE COOLING/HEATING CHANGEOVER (SA2)

To use a remote cooling/heating changeover device, connect the contact of the device to installer terminals 16 and

17. To activate the device, proceed as follows:

- From the HSW15 control panel select parameter CL43 and set it to the value +3 (contact closed = cooling, contact open = heating) or -3 (contact closed = heating, contact open = cooling)

COMPRESSOR ON SIGNAL (GN1)

For remote display of compressor operating status, an audible or visual alarm warning device can be connected between terminals 10 and 11. Connect the phase to terminal 11 and the signal device between terminal 10 and the neutral.

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BRA2 - BRN2 EN

OUTSIDE AIR PROBE (BT3) (Accessory)

The outside air probe allows the system water temperature set point to be compensated during heating or cooling operation.

Installation instructions

The outside air probe must be installed:

• outside of the home

• not in direct sunlight, away from flue gas discharges, air outlets, or doors and windows.

• on a perimeter wall facing north/north-west

• at a minimum height of 2.5 metres above the ground or at most half way up the house.

N-W

m 5,2nim

Mounting method:

• Open the cover of the sensor.

• Attach a probe to the wall and the correct position as described above.

• For the electrical connections see “Connection diagram”.

• Re-place the cover of the sensor.

TECHNICAL DATA

Sensing element NTC 10Kohm ± 1% (25°C) Degree of protection IP65 Perm. ambient / carriage temperatur

e -50°C...+100°C Measuring range -50°C...+100°C Materials PA 15% GK, Colour RAL 9010

20 21

BT3

REMOTE KEYPAD KIT (A5) (Accessory)

The remote keypad kit can be used to display all unit functions and access the parameters of the electronic board from a point located at some distance from the unit itself. It consists of a remote control module. To install the kit, proceed as follows:

- access the unit’s electrical panel after having disconnected the power supply;

- connect the remote control module with 3 wires to terminals 22, 23 and 24 on the installer terminal block:

- terminal 22 connected to the GND terminal on the module;

- terminal 23 connected to the Signal terminal on the module;

- terminal 24 connected to the +12V DC terminal on the module;

FLOW SWITCH CONNECTION (F3)

The system flow switch must be connected to terminals 18 and 19. If this is not connected, the unit will not be able to operate and the controller will display alarm code ER20 (see "Displaying alarms").

Page 16

BRA2 - BRN2 EN

GENERAL TECHNICAL DATA

I A

BRA2 without hydronic kit 0021 0025 0031 0041 0021 0025 0031 0041 0051 0061 Cooling capacity 1 [kW] 7,71 9,50 11,5 15,0 7,70 9,0 11,60 15,7 17,9 20,5 Power consumption 1 [kW] 2,29 2,79 3,80 4,60 2,22 2,59 3,55 4,79 5,19 6,03 COP 1 3,37 3,41 3,03 3,26 3,47 3,47 3,27 3,28 3,45 3,40 Cooling capacity 2 [kW] 5,74 7,03 8,68 11,4 5,72 7,10 8,76 11,8 13,3 15,6 Power consumption 2 [kW] 2,22 2,68 3,60 4,33 2,17 2,54 3,32 4,47 5,00 5,57 EER 2 2,59 2,62 2,41 2,63 2,63 2,80 2,64 2,64 2,66 2,80 ESEER 1 3,11 3,22 2,98 3,06 3,21 3,45 3,16 3,13 3,02 3,26 Flow-rate 1 m3/h 1,33 1,63 1,98 2,58 1,32 1,55 2,00 2,70 3,08 3,53 Pressure drop 1 kPa 13 15 16 31 13 14 16 34 36 35 Flow-rate 2 m3/h 0,99 1,21 1,49 1,96 0,98 1,22 1,51 2,03 2,29 2,68 Pressure drop 2 kPa 7 8 9 18 7 8 9 19 20 20 Sound power 4 [dBA] 75 75 75 77 75 75 75 77 77 77 Power supply V-N/Ph-Hz 230-1N-50 400-3N-50 No. of compressors 1 1 1 1 1 1 1 1 1 1 No. of circuits 1 1 1 1 1 1 1 1 1 1 Type of compressor Scroll No. of fans 1 1 1 2 1 1 1 2 2 2 Air flow-rate 1 [m3/h] 3000 3400 3400 6450 3000 3400 3400 6450 6000 6350 No. of system heat exchangers 1 1 1 1 1 1 1 1 1 1 Type of system heat exchanger PLATE System water heat exchanger content l 2 2 2 2 2 2 2 2 2 3

BRA2 with hydronic kit 0021 0025 0031 0041 0021 0025 0031 0041 0051 0061 Cooling capacity 1 [kW] 7,76 9,56 11,6 15,1 7,75 9,1 11,70 15,8 18,0 20,7 Power consumption 1 [kW] 2,21 2,69 3,71 4,48 2,14 2,50 3,45 4,66 5,04 5,91 COP 1 3,51 3,55 3,13 3,37 3,62 3,62 3,39 3,39 3,57 3,50 Cooling capacity 2 [kW] 5,77 7,08 8,73 11,5 5,75 7,15 8,81 11,9 13,4 15,7 Power consumption 2 [kW] 2,16 2,61 3,52 4,26 2,11 2,47 3,24 4,41 4,91 5,45 EER 2 2,67 2,71 2,48 2,70 2,72 2,90 2,72 2,70 2,73 2,88 ESEER 1 3,21 3,35 3,07 3,14 3,33 3,59 3,27 3,23 3,11 3,37 Flow-rate 1 m3/h 1,33 1,64 2,00 2,60 1,33 1,56 2,01 2,72 3,10 3,56 Available pressure head 1 kPa 59 50 40 37 60 53 39 33 26 23 Flow-rate 2 m3/h 0,99 1,22 1,50 1,98 0,99 1,23 1,52 2,05 2,30 2,70 Available pressure head 2 kPa 72 66 59 51 72 66 59 50 49 47 Sound power [dBA] 75 75 75 77 75 75 75 77 77 77 Power supply V-N/Ph-Hz 230-1N-50 400-3N-50 No. of compressors 1 1 1 1 1 1 1 1 1 1 No. of circuits 1 1 1 1 1 1 1 1 1 1 Type of compressor Scroll No. of fans 1 1 1 2 1 1 1 2 2 2 Air flow-rate [m3/h] 3000 3400 3400 6450 3000 3400 3400 6450 6000 6350 No. of system heat exchangers 1 1 1 1 1 1 1 1 1 1 Type of system heat exchanger PLATE System water heat exchanger content l 2 2 2 2 2 2 2 2 2 3

(1) outside air 35°C evaporator water IN/OUT 23/18°C (2) outside air 35°C evaporator water IN/OUT 12/7°C (3) maximum and minimum operating pressure refer to activation of the pressure switches (4) sound power based on measurements performed in accordance with ISO 9614 and Eurovent 8/1 Performance in accordance with EN 14511:2013

(1) outside air 35°C evaporator water IN/OUT 23/18°C (2) outside air 35°C evaporator water IN/OUT 12/7°C (3) maximum and minimum operating pressure refer to activation of the pressure switches (4) Sound power based on measurements performed in accordance with ISO 9614 and Eurovent 8/1 Performance in accordance with EN 14511:2013

Page 17

BRA2 - BRN2 EN

GENERAL TECHNICAL DATA

I A

BRN2 without hydronic kit 0021 0025 0031 0041 0021 0025 0031 0041 0051 0061 Heating capacity 1 [kW] 6,76 8,37 10,5 12,9 6,73 8,3 10,00 13,4 14,8 17,3 Power consumption 1 [kW] 2,25 2,84 3,48 4,35 2,24 2,69 3,23 4,47 4,67 5,58 COP 1 3,01 2,95 3,01 2,97 3,01 3,08 3,10 2,99 3,17 3,10 Cooling capacity 2 [kW] 4,81 5,89 7,29 9,6 4,80 5,99 7,35 10,0 11,1 13,0 Power consumption 2 [kW] 1,96 2,39 3,27 3,81 1,92 2,27 2,99 3,95 4,42 4,95 EER 2 2,45 2,46 2,23 2,51 2,50 2,64 2,46 2,52 2,51 2,63 ESEER 1 3,07 3,05 2,87 3,03 3,09 3,29 2,99 3,09 2,85 3,11 Flow-rate 1 m3/h 1,16 1,44 1,80 2,22 1,16 1,43 1,72 2,30 2,55 2,98 Pressure drop 1 kPa 10 12 13 23 10 12 12 25 24 24 Flow-rate 2 m3/h 0,83 1,01 1,25 1,64 0,83 1,03 1,26 1,71 1,91 2,24 Pressure drop 2 kPa 5 6 6 13 5 6 6 14 14 14 Sound power 4 [dBA] 75 75 75 77 75 75 75 77 77 77 Power supply V-N/Ph-Hz 230-1N-50 400-3N-50 No. of compressors 1 1 1 1 1 1 1 1 1 1 No. of circuits 1 1 1 1 1 1 1 1 1 1 Type of compressor Scroll No. of fans 1 1 1 2 1 1 1 2 2 2 Air flow-rate 1 [m3/h] 3000 3400 3400 6450 3000 3400 3400 6450 6000 6350 No. of system heat exchangers 1 1 1 1 1 1 1 1 1 1 Type of system heat exchanger PIASTRE System water heat exchanger content l 2 2 2 2 2 2 2 2 2 3

BRN2 with hydronic kit 0021 0025 0031 0041 0021 0025 0031 0041 0051 0061 Heating capacity 1 [kW] 6,72 8,32 10,4 12,8 6,68 8,2 9,99 13,3 14,8 17,2 Power consumption 1 [kW] 2,18 2,75 3,38 4,22 2,17 2,61 3,14 4,38 4,57 5,46 COP 1 3,08 3,02 3,08 3,03 3,08 3,16 3,18 3,04 3,24 3,15 Cooling capacity 2 [kW] 4,83 5,93 7,33 9,6 4,82 6,03 7,39 10,0 11,2 13,1 Power consumption 2 [kW] 1,92 2,34 3,19 3,76 1,88 2,22 2,91 3,88 4,38 4,85 EER 2 2,51 2,53 2,30 2,56 2,56 2,72 2,54 2,58 2,56 2,70 ESEER 1 3,17 3,17 2,97 3,09 3,19 3,43 3,09 3,14 2,93 3,20 Flow-rate 1 m3/h 1,16 1,43 1,79 2,20 1,15 1,42 1,72 2,29 2,55 2,96 Available pressure head 1 kPa 66 58 48 46 66 58 51 44 44 40 Flow-rate 2 m3/h 0,83 1,02 1,26 1,65 0,83 1,04 1,27 1,72 1,93 2,25 Available pressure head 2 kPa 74 73 67 56 74 73 67 55 55 55 Sound power [dBA] 75 75 75 77 75 75 75 77 77 77 Power supply V-N/Ph-Hz 230-1N-50 400-3N-50 No. of compressors 1 1 1 1 1 1 1 1 1 1 No. of circuits 1 1 1 1 1 1 1 1 1 1 Type of compressor Scroll No. of fans 1 1 1 2 1 1 1 2 2 2 Air flow-rate [m3/h] 3000 3400 3400 6450 3000 3400 3400 6450 6000 6350 No. of system heat exchangers 1 1 1 1 1 1 1 1 1 1 Type of system heat exchanger PLATE System water heat exchanger content l 2 2 2 2 2 2 2 2 2 3

(1) outside air 7°C; condenser water in/out 40/45°C (2) outside air 35°C; evaporator water IN/OUT 12/7°C (3) maximum and minimum operating pressure refer to activation of the pressure switches (4) Sound power based on measurements performed in accordance with ISO 9614 and Eurovent 8/1 Performance in accordance with EN 14511:2013

Page 18

BRA2 - BRN2 EN

OPERATING LIMITS

U I A

-15

-10

-5

-15 -10 -5 0 5 10 15 20

Outside air temperature [°C]

Water outlet temperature at evaporator [°C]

COOLING

Operating range in COOLING Water temperature head min-max= 3-8 K Water circuit pressure min-max= 1÷6 bars Max storage temperature= 63°C Maximum percentage of glycol= 40% As standard, the unit is manufactured with operating parameters allowing water produced at the evaporator down to +5°C. If needing to produce water down to -10°C, contact technical service.

OPERATION WITH

WATER-GLYCOL MIX

-15 -10 -5 0 5 10 15 20 25 30 35 40 45 50

Water outlet temperature at condenser [°C]

Outside air temperature [°C]

HEATING

Operating range in heating Water temperature head min-max= 4-10 K Water circuit pressure min-max= 1÷6 bars Maximum water temperature at system heat exchanger water inlet +50°C Max storage temperature= 63°C Maximum percentage of glycol= 40%

Page 19

BRA2 - BRN2 EN

U I A

PRESSURE DROP AND PRESSURE HEAD AVAILABLE TO SYSTEM

I A

SYSTEM HEAT EXCHANGER PRESSURE DROP, UNIT WITHOUT HYDRONIC KIT

100

012345

Pressure drop [kPa]

System heat exchanger pressure drop

Water flow-rate [m3/h]

0021 0025 0041 0031

0051

0061

AVAILABLE PRESSURE HEAD, UNIT WITH HYDRONIC KIT

100

01234

Available pressure head [kPa]

Water flow-rate [m3/h]

Available pressure head

0025

0021 0031

Page 20

BRA2 - BRN2 EN

U I A

PRESSURE DROP AND PRESSURE HEAD AVAILABLE TO SYSTEM

I A

AVAILABLE PRESSURE HEAD, UNIT WITH HYDRONIC KIT

100

012345

Available pressure head [kPa]

Water flow-rate [m3/h]

Presión estática útil

0051 0041 0061

The pressure head refers to the value available to the system.

The pump installed on the unit, if the “hydronic kit” option is purchased as an accessory, is a circulator pump with built-in inverter, including water pressure transducer and microprocessor to manage the following control modes adjustment:

CONSTANT ΔP: the pressure differential between pump suction and discharge is kept constant, pump speed decreases progressively when the terminals close.

VARIABLE ΔP: the pressure differential reduces as flowrate decreases, to account for the lower pressure drop along the piping running to the terminals (recommended for long sections of piping)

The type of control can be set using the selector on the pump body. As standard, the type of control is set to CONSTANT ΔP.

CONSTANT ΔP (standard setting)

VARIABLE ΔP

Page 21

300

250

200

150

100

2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500

0051

0041

0061

BRA2 - BRN2 EN

The characteristics indicated above refer to units with ducted outlets, with a 0.5m long straight duct and a cross-section equal to the cross-section of the fan.

The BRA2-BRN2 0041÷0061 units are supplied with two fans

Do not operate in the dashed section of the curves.

Air flow-rate (

m3/h)

300

250

200

150

100

2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200

0011

0021

GRAPH OF FLOW-RATE - FAN PRESSURE GAIN

MOD. 0021

Residual static pressure gain (Pa)

Air flow-rate (

m3/h)

300

250

200

150

100

2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500

0031

0025

MOD. 0041-0061

MOD. 0025 - 0031

Residual static pressure gain (Pa)Residual static pressure gain (Pa)

Air flow-rate (

m3/h)

FAN PRESSURE GAIN CURVES

I A

Page 22

BRA2 - BRN2 EN

CHECKING AND STARTING UP THE UNIT

PREPARING FOR FIRST START UP or restarting after shutting down for long periods.

The unit must be started up for the first time by the Technical Service.

Before starting up the units, make sure that:

- All safety conditions have been respected;

- The unit is adequately fixed to the surface it rests on;

- Clearances have been respected

- Water connections have been carried out as indicated in the instruction manual;

- The water circuit is filled and vented.

- The water valves are open;

- Electrical connections have been carried out correctly

- Voltage is within a tolerance of 10% of the rated voltage for the unit;

- The unit is correctly earthed;

- All electrical connections are tight and all water connections have been carried out correctly.

The unit must be started up for the first time with standard settings. Set Point values may be modified only after testing has been completed. Before starting up, power up the unit for at least two hours by switching QF1 and QS1 ON (see "wiring diagram" and the control panel in standby) so as to allow the oil in the compressor sump to heat up.

STARTING UP FOR THE FIRST TIME (after two hours)

Before starting the chiller:

Make sure the switch QF1 is in the OFF position.

- Make sure the contact of the on/off device SA1 (see the wiring diagram) is open (if featured).

- Close the door of the electrical panel.

- Move the main unit switch QS1 to the ON position.

- Move the switch QF1 (outside the unit) to “ON”.

The icon with the off symbol ( ) lights up on the control panel, indicating power is connected.

For the position of internal components, see the diagrams.

OFF

ACTIVATING AND DEACTIVATING THE UNIT

- Move the contact on the on/off device SA1 (if featured) to ON.

During this phase, if the following indications appear on the display, follow the instructions:

- ER20 check the water flow-rate and the connection of the flow switch.

- ER01 (three-phase heat pumps only): check the power supply connection and if necessary reverse two phases.

At every change of season, make sure the operating conditions fall within the limits specified. Make sure the current input of the compressor is less than the maximum shown in the table of technical specifications. Make sure the voltage is within the established limits and that, for three phase units, the unbalance between the phases is less than 2%. Check that the cover is closed again following the setting procedure.

To access the control panel, open the door:

- remove the screw 1;

- press the points 2 simultaneously and lift the door 3.

OFF

set

esc

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BRA2 - BRN2 EN

LEDS AND DISPLAY

Alarm

Heating

Cooling

Standby

Defrost

1 STATUS AND OPERATING MODE LEDS

Compressor

Fans

System pump

Frost protection heater system heat exchanger

3 UTILITY LEDS

Clock

Degrees centigrade

Pressure (Bar)

Menu (ABC)

2 VALUE AND UNIT OF MEASURE LEDS

set

esc

Page 24

BRA2 - BRN2 EN

To set the clock of the unit, starting from the main display, press the set button.

Pressing the set button once displays the various directories. Scroll the menu using the UP and DOWN buttons until reaching the directory CL.

SETTING THE CLOCK

The HSW15 controller is fitted with a clock for managing time bands to control specific events. Follow the procedure shown below to set the hours, minutes and date.

To enter menu CL press the set button.

Once having entered this menu, HOUr will be shown. Select whether to set the time, date or year using the UP and DOWN buttons. Once having decided which value to set, press the [set]** button to enter the corresponding menu. **pressed and held for 3 around seconds.

To set the time, date and year simply scroll with the UP and DOWN buttons until the desired value and

Page 25

BRA2 - BRN2 EN

... press the set button.

To exit the clock setting menu press the esc button until returning to the main display.

Page 26

BRA2 - BRN2 EN

SCHEDULER SETTING

The HSW15 controller can manage the unit based o the time and the day of the week. The controller features four time bands in three profiles that can be combined, when programming, with the days of the week. The profile defines the behaviour of the unit over a 24 hour period. Time band management must be enabled by parameter tE00 = 1 (tE00 = 0 standard setting).

Programming example

1) Define the profile for each time band, as shown in the following table.

Description Description Profile 1 Profile 2 Profile 3

Hour / Minutes hours 00 (tE10=0) / min.00 (tE11=0) hours 00 (tE38=0) / min.00 (tE39=0) tE66..tE67 Operating mode ON/Standby ON (tE12=0) ON (tE40=0) tE68

TIME BAND 1 Cool set point tE13=15 tE42=15 tE69

Heat set point tE14=30 tE42=30 tE70 DHW set point tE15=50 tE43=50 tE71 Hour / Minutes hours 6 (tE17=6) / min.00 (tE18=0) hours 7 (tE45=6) / min.00 (tE46=0) tE73..tE74 Operating mode ON/Standby ON (tE19=0) ON (tE47=0) tE75

TIME BAND 2 Cool set point tE20=12 tE48=12 tE76

Heat set point tE21=33 tE49=33 tE77 DHW set point tE22=45 tE50=45 tE78 Hour / Minutes hours 9 (tE24=9) / min.00 (tE25=0) hours 7 (tE52=12) / min.00 (tE53=0) tE80..tE81 Operating mode ON/Standby ON (tE26=0) ON (tE54=0) tE82

TIME BAND 3 Cool set point tE27=15 tE55=12 tE83

Heat set point tE28=30 tE56=33 tE84 DHW set point tE29=50 tE57=45 tE85 Hour / Minutes hours 17 (tE31=17) / min.00 (tE32=0) hours 17 (tE59=17) / min.00 (tE60=0) tE87..tE88 Operating mode ON/Standby ON (tE33=0) ON (tE61=0) tE89

TIME BAND 4 Cool set point tE34=12 tE62=12 tE90

Heat set point tE35=33 tE63=33 tE91 DHW set point tE36=45 tE64=45 tE92

Example of profile 1 to be used on opening days

Example of profile 2 to be used on closing days

2) Associate one of the three programmed profiles with each day of the week. The days of the week are identified by the parameters tE01 to tE07; tE01 = Monday, tE02= Tuesday……tE07=Sunday. Once having displayed the day of the week, tE01 to tE07, select the value 1, 2 or 3 corresponding to Profile 1, Profile 2 and Profile 3 respectively.

Follow the operations shown below to program the profiles and combine them with the day of the week:

To access directory tE from the main display, press esc and set together. [esc+set].

Pressing these two buttons enters the menu with the list of directories. Use the up and down buttons to scroll to the directory PAr. Press the set button and use the up and down buttons to scroll to the directory tE.

Press the set button to display the first parameter, tE00. Use the up and down buttons to scroll to the other parameters.

To set the selected parameter, press the set button and enter the value using the up and down buttons. Confirm the changes by pressing the set button or alternatively cancel by pressing esc.

Page 27

BRA2 - BRN2 EN

For example, to switch operation from StbY to COOL.

To change the operating mode, press and hold the mode button for at least 2 seconds.

A scroll menu will start flashing with the values StbY (standby) and COOL (cool). Use the up and down buttons to select the desired operating mode.

SELECTING THE OPERATING MODE

There are three different modes:

• Standby mode (StbY)

• Cooling mode (COOL)

• Heating only mode (HEAT)

The unit will automatically return to the main display and the Stby LED, previously on, will now be off and the COOL LED will be on.

To change the set point, starting from the main display, press the set button.

Pressing the set button once displays the various directories. Scroll the menu using the up and down buttons until reaching the SP directory.

To enter the SP directory press the set button.

The active mode will be displayed (COOL).

SETTING THE SET POINTS

As an example, the Set Point in COOL mode will be changed from 12.0 degrees centigrade to 12.5 degrees centigrade.

Taking the example of changing the set point for the operating mode. Press the SET button.

Page 28

BRA2 - BRN2 EN

The instrument will display the current set point (in this case

12.0 degrees centigrade).

To increase or decrease the value, use the up and down buttons. For example, to change the set point to 12.5 degrees, press the up button until the desired value is displayed.

Once having reached the desired set point, press the set button. In this way, the instrument will save the value 12.5.

To return to the main display, press esc or wait for the menu timeout to expire (15 seconds).

SETTING THE PARAMETERS

Accessing the PASS directory (from the main display, pressing the esc and set buttons together [esc+set] and scrolling to the directory with up / down) and setting the PASS accesses the parameters visible for the password entered.

To access the PASS directory from the main display, press esc and set together [esc+set].

Pressing the two buttons accesses the menu listing the directories. Scroll using the up and down buttons to the PASS directory.

To enter the PASS directory press the set button. Then enter the password (installer or manufacturer), press set and exit. Access the parameters to display or change the values.

Press the up and down buttons to select the Par submenu. Press the set button to display the desired directory.

Page 29

BRA2 - BRN2 EN

The first directory displayed by the instrument will be the CF directory (configuration). To set the individual CF parameters, simply press set again.

The instrument will display parameter CF00 (default factory settings). To scroll the various parameters, simply press the up button to go to the next parameter (in this case CF01) or the down button to go to the previous parameter (in this case CF47). CF00->CF01->CF02->...->CF47->CF00 CF47<-CF00<-CF01->...<-CF46<-CF47

NOTE: -> UP, <-DOWN

To display the value of the parameter (in this case CF00), press the set button.

For parameter CF00, the value displayed will be 2. To change the value of the parameter, press the up or down button.

When having selected the value, press the set button. ** To exit the display and return to the previous level, press esc.

**NOTE: pressing the set button confirms the new value; pressing the esc button returns to the previous level without changing the existing value.

Press the SET button for 3 seconds.

The display shows YES, to confirm that the alarm log has been reset.

RESETTING THE ALARM LOG (Er90)

From the main display press “esc + set”, the display will show “Par”. Scroll using the UP and DOWN buttons until displaying the label “FnC”. Press the SET button, the display will show “dEF”. Scroll using the UP and DOWN buttons until displaying “EUr”.

Page 30

BRA2 - BRN2 EN

Example of displaying and resetting (tens) the Pump operating hours. From the main display, press the set button.

The display will show label Ai. Scroll the labels using the UP and DOWN buttons until reaching label Hr.

DISPLAYING AND RESETTING COMPRESSOR / PUMP HOURS

Press the set button to display the first label, in this case the operating hours for compressor 1 (CP01).

Scroll using the UP and DOWN buttons until displaying (if featured among the resources) the operating hours for compressor 2 (CP02) and the operating hours for the pump (PU02).

Press the set button to display the operating hours for the pump PU02.

The tens of operating hours are equal to 2. (The hours are expressed in tens: 2 indicates 20 operating hours). To reset the operating hours for the pump PU02, press and hold [set].

Note: to reset the operating hours for the other resources, repeat the procedure described.

To exit the menu, press esc until returning to the main display.

Page 31

BRA2 - BRN2 EN

LIST OF ACCESSIBLE PARAMETERS

Directory labe

l Parameters Parameters for:

CF CF00... CF77 Configuration

Ui UI00... UI18 User interface

tr tr00... tr20 Temperature control

St St00... St04 Operating status

CP CP00... CP10 Compressor Primary pump PI PI00... PI24 Primary water circuit pump Fans FE FE00... FE30 Fans Electric

HI HI00... H15 System heat exchanger electric heater

heater

dS dS00... dS07 Dynamic set point

Ad Ad00... Ad07 Adaptive

AF AF00... AF03 Frost protection

AL AL00... AL48 Alarms

CL C00... CL97 Local I/O configuration

Note 1: when setting the parameters the COMPRESSOR and HEATER LEDs will flash alternating with the DEFROST

LED.

Note 2: the above table shows a list of parameters that are all or partly available only on entering the password.

Page 32

BRA2 - BRN2 EN

DISPLAYING ALARMS

I A

FAULT CAUSE SOLUTION

Values display indication

Er01

High pressure switch tripped, manual reset after 3 activations in one hour, incorrect connection of power supply phases (threephase models only)

Check fault (see high discharge pressure) Reset manually Change the position of two phases.

Values display indication

Er05

Low pressure switch tripped manual reset after 4 activations per hour

Check fault

Values display indication

Er30

System frost prevention alarm (manual reset)

Check water outlet temperature Check water flow Check temperature set point Check correct positioning of sensor BT2

Values display indication

Er20

Differential pressure switch or flow switch tripped Manual reset if active for more than 30 seconds

Check inadequate water flow Check for air in water circuit Check electrical connection (see unit wiring diagram)

Values display indication

Er 10

Fan circuit breaker tripped Manual reset if active for more than 30 seconds

Check correct sequence of power supply phases (versions 0071-0121)

Display indication

Er47

HSW15 communication error with remote keypad (only if remote keypad featured)

Check electrical connection

Values display indication

Er60

Faulty BT1 system water return sensor (automatic reset)

Check electrical connections Replace component

Display indication

Er75

Pressure transducer malfunction

Check electrical connection (see unit wiring diagrams) Replace component

Display indication

Er81

Compressor maintenance interval

Check operating pressure Check condition of the compressor Reset the clock

Display indication

Er85

Water pump maintenance interval

Check condition of the water pumps Reset the clock

Display indication

Er90

Maximum alarm log size exceeded

Reset alarm log (paragraph "Reset alarm log")

Values display indication

Er61

Faulty BT2 system water outlet sensor (automatic reset)

Check electrical connections Replace component

Display indication

Er46

Set the clock

See procedure on p. 24

Page 33

BRA2 - BRN2 EN

PEAK LIMITER ALARM SIGNALS

I A

The heat pumps can be fitted with a single-phase or three-phase peak limiter to reduce compressor start-up current.

Single-phase peak limiter

The green LED on steady indicates line voltage is present. The red LED identifies the type of alarm, based on the sequence of flashes. The orange LED indicates the delay between unit starts and/or stops.

* monitored during inactivity and bypass ** In this situation, the red LED flashes 4 times; the service

centre needs to be contacted to reset the device.

Three-phase peak limiter

The three-phase peak limiter has 2 built-in indicator LEDs. The green LED indicates line voltage is present and correct operation. The red LED identifies different alarm conditions based on the sequence of flashes, as shown in the enclosed table.

Orange LED Condition Action

Minimum recovery

time between starts

and/or recovery time

between stop and start

Autoreset when the

minimum recovery

time has elapsed

Red LED Condition Action

2 flashes

Undervoltage

Ue < 190VAC)

Autoreset after

5 minutes *

3 flashes

Overcurren

(>80 A for 1 sec.)

Autoreset after

5 minutes

4 flashes Protection relay

Autoreset after

5 minutes **

5 flashes Ramp incomplete

Autoreset after

5 minutes

Green LED Condition Action

Flashing Power supply alarm

Contact service

centre

Device powered,

no faults

Awaiting

compressor

start signal

Red LED Condition Action

Incorrect phase sequence

Reverse the phases

Line voltage out

of limits

Autoreset after

5 minutes

4 Frequency out of limits

Autoreset after

5 minutes

Locked rotor

(during ramp)

Autoreset after

5 minutes

Ramp starting

> 1 sec

Autoreset after

5 minutes

7 Excess temperature

Autoreset after

5 minutes

Low current

(during bypass)

Autoreset after

5 minutes

9 Voltage unbalanced

Autoreset after

5 minutes if all the

three phases (L1, L2,

L3) are connected

Green LED Condition Action

Flashing

1 minute recovery

between starts and/or

recovery time between

stop and start

Device powered,

no faults

Device powered

during ramp

Page 34

BRA2 - BRN2 EN

OPERATING CHARACTERISTICS

I A

Cooling set point

(factory setting) = 12°C, Hysteresis = 3°C. The compressor starts at outlet water temperatures above 12°C+3°C (15°C). The compressor stops at water temperatures below 12°C. In the event of temporary power failure, when power returns, the mode set previously will be retained in the memory.

Heating set point

(factory setting) = 40°C, Hysteresis = 3°C. The compressor starts at water outlet temperatures below 37°C. The compressor stops at water temperatures above 40°C. In the event of temporary power failure, when power returns, the mode set previously will be retained in the memory.

COMPRESSOR START-UP DELAY

Two functions prevent the compressor from starting up too frequently.

- Minimum time since last shut-down 180 seconds.

- Minimum time since last start-up 300 seconds.

CIRCULATING PUMP

The electronic board includes a pump control output. The pump starts when “cool” mode is activated and stops a few seconds after “standby” mode is selected. After the first few seconds of pump operation when the water flow is at full speed, the water flow alarm functions are activated (differential pressure switch and flow switch).

FAN SPEED CONTROL

To enable the unit to function correctly at different outside temperatures, a microprocessor with pressure reading via pressure sensor controls the fan rotation speed. This allows the exchange of heat to be increased and/or decreased, maintaining condensing or evaporation pressures essentially constant. The fan operates independently of the compressor.

FROST ALARM

The frost protection function is always active, so as to prevent the water freezing and damaging the plate heat exchanger; to do this, the microprocessor shuts down the compressor if the temperature measured by the heat exchanger outlet temperature sensor is less than: +4°C on the system side. The frost prevention temperature set point can be modified by an authorised service centre only and only after verifying that the water circuit contains antifreeze. Tripping of this alarm shuts down the compressor but not the pump, which remains active. To reset normal functions, the water outlet temperature must rise to more than: +7°C on the system side. Reset is manual.

WATER FLOW ALARM

The microprocessor provides for the management of a water flow alarm controlled by a differential pressure switch fitted as standard on the appliance and flow switches to be installed on the water inlet piping. This safety device may trip after the first 60 seconds of pump operation when the water flow is up to speed. Tripping of this alarm shuts down the compressor but not the pump, which remains active. The alarm is reset automatically is it lasts less than 20 sec. If it lasts longer, it must be reset manually.

Page 35

BRA2 - BRN2 EN

OPERATING CHARACTERISTICS

I A

SYSTEM WATER SET POINT COMPENSATION BASED ON THE OUTSIDE TEMPERATURE

Set point compensation based on the outside temperature must be enabled by setting a parameter, see the table.

Outside air temperature probe to be purchased as an accessory, not supplied with the unit.

System water set point compensation in COOLING mode based on the outside temperature

Graph with factory settings

Outside air temperature

Ds05 + Ds01 = 20°C Ds05 = 25°C

12°C

15°C

Water temperature set point

Ds01 = -5°C

Ds03 = 3°C

System water set point compensation in HEATING mode based on the outside temperature

Graph with factory settings

Outside air temperature

Ds06 + Ds02 = 10°CDs06 = -5°C

28°C

33°C

Water temperature set point

Ds02 = 15°C

Ds04 = -5°C

Parameter Value Unit of measure Description

ds00 1 Enable system water set point compensation function

OPERATION IN COOLING MODE

Ds01 -5 °C Differential applied to the value of ds05

DS03 3 °C Differential applied to the system water temperature set point in cooling mode

Ds05 25 °C Outside air temperature activation/deactivation value for set point

compensation function in COOLING

OPERATION IN HEATING MODE

Ds02 15 °C Differential applied to the value of ds06

DS04 -5 °C Differential applied to the system water temperature set point in heating mode

Ds06 -5 °C Outside air temperature activation/deactivation value for set point

compensation function in HEATING

Page 36

BRA2 - BRN2 EN

SHUTTING DOWN FOR LONG PERIODS

After deactivating the chiller:

- Make sure the remote switch SA1 (if featured) is off.

- Make sure the remote keypad (if featured) shows “OFF”.

- Place QF1 in the OFF position (see wiring diagram)

- Deactivate the indoor terminal units by placing the switch of each unit in the “OFF” position.

- Close the water valves.

If the mains switch is turned to “off” for more than four hours, after turning it on and before reactivating the unit, leave the power on but the unit deactivated for at least two hours to preheat the oil in the compressor sump.

ROUTINE MAINTENANCE

UNSCHEDULED MAINTENANCE

Never perform any cleaning operations before having

disconnected the unit from the mains power supply. Terminals 10, 11, 12, 13, 14, 15, 16, 17, 18 and 19 may be live even when the unit has been disconnected. Make sure power is not connected before proceeding

CHEMICAL WASHING

It is recommended to chemically flush the plate heat exchanger after every 3 years of operation. For instructions on how to carry out this operation, call the toll free number.

REFRIGERANT GAS CONTENT

The chillers are charged with R-410A refrigerant gas and tested in the factory. In normal conditions, there should be no need for the Technical Service to intervene to check the refrigerant gas. However, over time, small leaks may develop at the joints leading to loss of refrigerant and draining of the circuit, causing the unit to function poorly. In this case, the leaks of refrigerant must be identified and repaired and the refrigerant circuit recharged. Proceed as follows:

- Empty and dry the entire refrigerant circuit using a vacuum pump connected to the low and high pressure tap until the vacuometer reads about 10 Pa. Wait a couple of minutes and check that this value does not rise to more than 50 Pa.

- Connect the refrigerant gas cylinder or a filling cylinder to

the low pressure line pressure gauge connection.

- Charge the quantity of refrigerant indicated on the unit’s rating plate.

- Always check the superheat and subcooling values, which should be between 5 and 10 °C and 4 and 8 °C.

- After a couple of hours operation, check that the liquid indicator indicates a dry circuit (dry-green).

In the event of partial leaks, the circuit must be completely emptied before being recharged. The R-410A refrigerant must only be charged in the liquid state. Operating conditions other than rated conditions may produce considerably different values. Tightness testing or identification of leaks must only be carried out using -R410A refrigerant gas, checking with a suitable leak detector. The refrigerant circuit must not be charged with a refrigerant other than that indicated. The use of a different refrigerant may cause serious damage to the compressor.

Oxygen, acetylene or other flammable or poisonous gases must never be used in the refrigerant circuit as they may cause explosion or poisoning. Oils other than those indicated on page 16 must not be used. The use of a different oil may cause serious damage to the compressor.

Never perform any cleaning operations before having disconnected the unit from the mains power supply. Terminals 10, 11, 12, 13, 14, 15, 16, 17, 18 and 19 may be live even when the unit has been disconnected. Make sure power is not connected before proceeding. Regular maintenance is fundamental to maintain the efficiency of the unit both in terms of operation and energy consumption. The Technical Service maintenance plan must be observed, with an annual service which includes the following operations and checks:

- Filling of the water circuit;

- Presence of air bubbles in the water circuit

- Efficiency of safety devices

- Power supply voltage

- Power consumption

- Tightness of electrical and water connections

- Condition of the compressor contactor

- Verification of operating pressure, superheat and subcooling

- Efficiency of the compressor heater

During the maintenance operations, the chiller inspection panel may need to be removed. If this is the case, proceed as follows:

- Open the door of the electrical panel.

- Undo the screws as shown in the figure

- Remove the inspection panel

To replace the inspection panel, repeat the procedure in reverse.

DISPOSAL

The unit must be disposed of according to the legislation in force in the country concerned.

Page 37

BRA2 - BRN2 EN

U I A

TROUBLESHOOTING

Power failure

Power supply voltage too low

Switch QF1 in OFF position Remote switch (if featured) in OFF position Control panel in standby Main switch QS1 in OFF Compressor circuit breaker OFF

Check presence of voltage Check safety systems upstream of the appliance

Check power line

Switch ON

Contactor coil faulty HSW15 controller fault Start-up capacitor faulty (if featured) Compressor faulty Reversed phases (three-phase units only)

Replace the component

Check

Replace the component

Check

Protection devices trip and shut down the compressor

Excessive discharge pressure Low suction pressure Low voltage Electrical connections not sufficiently tight Operation outside permitted limits

Faulty operation of pressure switches

Circuit breaker tripped Check supply voltage Check electrical insulation of windings

Replace the component

Insufficient capacity

Insufficient refrigerant Unit sized too small Operation outside recommended limits

Noise and vibrations

Contact between metal bodies

RepairWeak foundations

Tighten screws

Loose screws

Compressor noisy

Liquid returning to compressor Inadequate fastening

The unit doesn’t start

FAULT CAUSE SOLUTION

Page 38

BRA2 - BRN2 EN

Low suction pressure (less than 4 bars)*

Low utility water inlet temperature Low outside water inlet temperature Thermostatic expansion valve faulty or blocked Blocked water filter Blocked plate heat exchanger

Check

Low discharge pressure (less than 16 bars)*

Low utility water inlet temperature

Check

Air in water circuit Vent

Insufficient gas charge Check

Moisture in the refrigerant circuit (flow indicator moisture yellow)

Empty and refill

Faulty operation of outside heat exchanger control (pressure regulating valves)

Check

High suction pressure (greater than 20 bars)*

High utility water inlet temperature Thermostatic expansion valve faulty or excessively open

Check

High discharge pressure (greater than 32 bars)*

High outside water temperature High utility water inlet temperature

Insufficient water flow-rate in outside heat exchanger

Check

Check pump operation

Faulty operation of outside heat exchanger control (pressure regulating valves)

Check

Air in water circuit Vent

Excessive refrigerant charge

Check

*Values indicative only

FAULT CAUSE SOLUTION

Page 39

BRA2 - BRN2 EN

A U

USEFUL INFORMATION

U I A

For information on technical assistance and obtaining spare parts, contact:

CLIMAVENETA S.P.A. AFTER SALES DEPARTMENT - RESIDENTIAL BUSINESS

Via Duca d’Aosta 121 - 31031 Mignagola di Carbonera (TV) ITALY

Tel: +39.0424.509500 Fax: +39.0424.509563

www.climaveneta.com - [email protected]

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