CLIMAVENETA AWR MTD, AWR MTD/B Service Manual

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INSTALLATION - OPERATING - SERVICE MANUAL

Reverse-cycle air/water heat pumps with domestic hot water production, axial-flow fans and water pump assembly.

AWR MTD AWR MTD/B 0011÷0061

AWR MTD - AWR MTD/B GB 01/2009

INDEX

U I A

User

Installer

Assistance

Important

Prohibition

Danger voltage

Danger high temperatures

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

Eurovent certification program.

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

General warnings 3

Waiver of liability 3

Fundamental safety rules 3

Receiving and handling the product 4

Description of standard unit 5

Dimensioned drawings 6

Installation 6

Water connections 7

Water circuit data 9

Operating diagrams 12

Electrical connections 14

Mains power supply connections 15

Installer connections 17

Operating characteristics 25

General technical data 31

Checking and starting up the unit 33

HSW11 functions 34

LEDs and display 35

Displaying alarms 47

Shutting down for long periods 48

Routine maintenance 49

Special maintenance 49

Disposal 49

Troubleshooting 50

Useful information 51

U I A AI

AIU

UUI A

I A

IIA

I A

3GB 01/2009 AWR MTD - AWR MTD/B

INDEX

U I A

GENERAL WARNINGS

U I A

FUNDAMENTAL SAFETY RULES

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. All repair or maintenance work must be carried out by the Company’s Technical Service or qualified personnel following the instructions in this manual. The air-conditioner must under no circumstances be modified or tampered with as this may create situations of risk. Failure to observe this condition absolves the manufacturer of all liability for resulting damage.

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

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 switch QF1 is in the OFF position (see the wiring diagram). 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.

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. Power supply: the cross section 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.

Terminals 6, 7, 8 & 9 may be live 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..

WAIVER OF LIABILITY

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 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.

U I A

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.

The units are supplied complete with:

- instruction manual;

- guarantee certificate;

- CE declaration;

- list of the main components and sub-assemblies fitted on the product. These are contained in a plastic bag (A) attached to the top of the chiller.

The unit must be handled by qualified and suitably equipped personnel only using equipment appropriate for the weight of the unit, in compliance with the safety standards in force (and subsequent amendments.). If a forklift truck is used, insert the forks under the base, spacing the forks as wide apart as possible. If a crane is used, pass the cables through the bottom of the base, making sure they do not exert pressure on the unit. Once the packaging has been removed, the appliance can be lifted and moved by inserting two metal tubes (max. diameter 22 mm) into the feet, and using suitable handling equipment.

The instruction manual is an integral part of the unit and should therefore be read and kept carefully.. The packaging should not be removed until the unit is located in the installation site.

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

The weight of the unit is biased towards the compressor side (side of the packaging with the bar code, see the figure). During transport, the unit should be kept in a vertical position.

The unit must be stored sheltered from direct sunlight, rain, wind or sand. Avoid exposing the unit to direct sunlight, as the pressure inside the refrigerant circuit may reach dangerous values and cause the activation of the safety valves, where fitted. Check the instructions on the packaging for stacking units. The packaging must be removed by the operator using suitable protective equipment (gloves, glasses, etc.). Take special care not to damage the unit. Observe the local standards in force as regards disposal of the packaging, using specialist collection or recycling centres.

RECEIVING AND HANDLING THE PRODUCT

I A

AWR MTD - AWR MTD/B GB 01/2009

Hole Ø22

Bar code

(compressor side)

Dimensions AWR 0011 0025 0031 0041 0051 0061

Dimension L mm 970 970 970 970 970 970 Dimension P mm 475 525 525 525 525 525 Dimension H mm 1150 1450 1450 1450 1600 1600 Gross weight kg 135 160 165 175 185 190

5GB 01/2009 AWR MTD - AWR MTD/B

DESCRIPTION OF STANDARD UNIT

I A

These air cooled reverse-cycle chillers with axial-flow fans operate with R410A refrigerant fluid and 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.

VERSIONS AVAILABLE

AWR MTD

Reverse-cycle air/water heat pump with domestic hot water production. Built-in water pump assembly complete with electric heaters.

AWR MTD/B

Reverse-cycle air/water heat pump with domestic hot water production. Built-in water pump assembly without electric heaters.

The "/S" at the end indicates that a peak limiter is fitted for single-phase models.

8 5

1 Electrical panel 2 HSW11 controller 3 System plate heat exchanger 4 Low pressure switch 5 High pressure switch 6 Liquid sight glass (0041 - 0061) 7 Scroll compressor 8 Filter 9 Thermostatic valve 10 Axial-flow fan 11 Airside finned heat exchanger 12 Pump 13 Liquid recipient 14 Expansion vessel 15 Reversing valve 16 Auxiliary electric heaters (MTD version only) 17 Safety valve 18 Air vent valve 19 Pressure gauge 20 Base electric heater 21 Pressure transducer

U I A

6 AWR MTD - AWR MTD/B GB 01/2009

DIMENSIONAL DRAWINGS

600

900

400

Dimensions 0011 0025 0031 0041 0051 0061

A mm 900 900 900 900 900 900 B mm 940 1240 1240 1240 1400 1400 C mm 370 420 420 420 420 420 D mm 320 370 370 370 370 370 E mm 580 580 580 580 580 580

Weight distribution AWR 0011 0025 0031 0041 0051 0061

W1 lato rear dx kg 47 62 64 65 68 71 W2 lato rear sx kg 23 18 20 22 24 24 W3 front sx kg 13 18 18 21 22 22 W4 front dx kg 42 52 53 57 61 63 tot kg 125 150 155 165 175 180

1 - Water connections IN 0011÷0025 Ø1” - 0031÷0061 Ø1”1/4 1 - Water connections OUT 0011 Ø3/4” - 0025÷0061 Ø1”1/4

INSTALLATION

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.

- Follow the instructions shown in the chapter on DIMENSIONAL DRAWINGS to allow room for maintenance operations. If installing multiple units the clearances must be doubled.

POSITIONING

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 holes in the base of the unit.

To avoid the slings damaging the unit, place protection between the slings and the unit. The unit should be installed on special vibration dampers. See the chapter on DIMENSIONAL DRAWINGS for the support positions identified by W1, W2 etc. and the corresponding weights for the correct sizing of the vibration dampers. 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. In heating mode the unit produces a significant quantity of condensate, which must be suitably drained. Condensate drainage must not cause problems to objects or people. If the outside air temperature is less than 0°C, the condensate may freeze; in these case fit a frost protection heater on the drain line. For correct operation of the unit, avoid the following: obstacles to air flow, leaves that may block the heat exchange coil, strong winds that stop or reinforce air flow, sources of heat too close to the unit, recirculation or stratification of air.

7GB 01/2009 AWR MTD - AWR MTD/B

WATER 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. The following components should be installed in the water circuit:

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

2. Two vibration damper joints (intake and outlet);

3. Two shut off valves (normal in intake and calibrating in outlet);

4. A flow switch (inlet). The flow switch must be calibrat-

ed by the installer to a value equal to 70% of rated flow.

5. Two thermometers (intake and outlet);

6. An intake filter must be installed as close as possible

to the evaporator and positioned to allow easy access for routine maintenance.

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.

10. The unit is fitted as standard with an expansion vessel; make sure this is correctly sized for the water content of the system and the expected operating temperature, otherwise install an additional expansion vessel.

Failure to install the flow switches will mean the heat exchangers are 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. Make sure that the frost protection heaters on the heat exchanger are powered when the unit is off (unit in standby “StbY”) 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.

The unit must be prevented from freezing at outside air temperatures around 0°C. It is recommended to use suitable percentages of antifreeze (see “Water circuit data”), protect the piping with heating sheaths, and empty the system, making sure there no water remains at the lowest points in the circuit. 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.

Factory connections Installer connections

UTILITY RETURN

UTILITY OUTLET

Utility water circuit connection diagram

1 Pressure gauge 2 Vibration damper joint 3 Shut off valve 4 Calibrating valve

5 Flow switch 6 Thermometer 7 Pump 8 Safety valve

9 Expansion vessel 10 Wire mesh filter 11 Unit fill/drain valve 12 Temperature sensor

13 Differential pressure switch 14 Drain / chemical washing valve 15 Auxiliary heaters 16 System vent

AWR MTD - AWR MTD/B GB 01/2009

0025-0061

100

SYSTEM FILL G1/2

WATER OUTLET

A=C

524

559

UNIT VENT

SAFETY VALVE DISCHARGE

WATER INLET

0011

A 100

328

WATER INLET

WATER OUTLET

OPENING FOR CONDENSATE DRAIN CONNECTION

SYSTEM FILL G1/2

CONDENSATE DRAIN POSITION 0011-0061

524

559

SAFETY VALVE DISCHARGE

UNIT VENT

Dimensions 0011 0025 0031 0041 0051 0061

A mm 61,5 61,5 61,5 61,5 61,5 61,5 B mm 321,5 621,5 621,5 621,5 721,5 721,5 C mm 91,5 61,5 61,5 61,5 61,5 61,5 D mm 72,5 454,5 454,5 454,5 549,5 549,5 Water in/out fittings Ø 1"-3/4" 1"-1"1/4 1"1/4 1"1/4 1"1/4 1"1/4

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.

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.

CONDENSATE DRAIN

The unit is fitted with condensate pan; this must be connected to a drain system to take away the water that forms, see the drawing. If the outside air temperature is less than 0°C, the condensate drained from the collection pan may freeze. The unit must be supported on a suitable structure or brackets to keep it off the ground, with a frost protection heater fitted on the drain line.

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

9GB 01/2009 AWR MTD - AWR MTD/B

WATER CIRCUIT DATA

I A

Water content in the system

Size 0011 0025 0031 0041 0031 0041 0051 0061

Minimum water content l 24 31,5 40 46 40 46 57 74

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

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.

0 -5 -10 -15 -20 -25

Freezing point (°C)

Percentage of ethylene glycol in weight

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

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

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.

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

FILLING THE SYSTEM

- Before starting to fill, place the unit mains switch QF1 in the OFF position.

- 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 valve 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 in 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 starting to empty, place switch QF1 in the “OFF” position

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

- Open the drain valve outside the unit and all the installation 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°).

OFF

10 AWR MTD - AWR MTD/B GB 01/2009

PUMP CHARACTERISTICS

The curves shown above refer to the flow-rates and heads of the pumps only. To calculate the useful values relating to the system or source, subtract the pressure drop of the heat exchangers, see the graph "Heat exchanger pressure drop: system".

100

110

120

130

140

Hp [kPa]

Q [m3/h]

= AWR 0011 MTD

= AWR 0025÷0061 MTD

HEAT EXCHANGER PRESSURE DROP: SYSTEM

0123456

Q [m3/h]

0011 0025 0031 0041 0051 0061

[KPa]

11GB 01/2009 AWR MTD - AWR MTD/B

DHW storage cylinder, 280 litres

1 Manual fill and drain valve 2 Adjustable thermostat 3 Probe socket 4 Thermometer 5 Thermostatic valve 6 Pump SXM 32-50 7 Plate heat exchanger WP 24*40 8 1”1/4 GAS attachment for optional electric

heater 9 Automatic vent valve 3/4” GAS 10 Expansion vessel, 18 litres 11 Flexible polyurethane insulation, 50 mm

thick, sky blue finish

A Primary outlet; heat pump return 1” GAS B Domestic water inlet; mains 3/4” GAS C Domestic hot water outlet 3/4” GAS D Primary inlet; heat pump outlet 1” GAS

12 AWR MTD - AWR MTD/B GB 01/2009

OPERATING DIAGRAMS, AWR MTD

I A

The heat pump is connected directly to the central heating circuit (the minimum water content required must be ensured). The heat pump can also produce domestic hot water by managing a special 3-way valve, connected to a hot water storage cylinder

The heat pump heats the water in the heating system storage cylinder. The underfloor system is managed by the central heating pump, installed externally to the storage cylinder, and by the mixer valve (unit 12). The heat pump can also produce domestic hot water by managing a special 3-way valve, connected to a hot water storage cylinder.

1 Heat pump AWR MTD 2 Non-return valve 3 Control valve with dial 4 Shut off valve 5 Expansion vessel (if necessary) 6 Air separator 7 DHW storage 8 Storage temperature sensor BT4 9 Thermostatic valve 10 Flow switch 11 Safety valve 12 Outside air temperature sensor 13 3-way valve, domestic hot water production 14 Electric heater

Example water circuit diagram

1 Heat pump AWR MTD 2 Non-return valve 3 Control valve with dial 4 Shut off valve

Expansion vessel (if necessary)

6 Air separator 7 DHW storage 8 Storage temperature sensor BT4 9 Thermostatic valve 10 Flow switch

11 Safety valve 12 Underfloor system control not supplied by

Climaveneta. 13 System storage 14 Outside air temperature sensor

15 3-way valve, domestic hot water pro-

duction

16 Electric heater

Example water circuit diagram

13GB 01/2009 AWR MTD - AWR MTD/B

OPERATING DIAGRAMS, AWR MTD

I A

3 3

Example water circuit diagram

1 Heat pump AWR MTD 2 Non-return valve 3 Control valve with dial 4 Shut off valve 5 Expansion vessel (if necessary)

6 Air separator 7 DHW 3storage 8 Storage temperature sensor BT4 9 Thermostatic valve 10 Flow switch

11 Safety valve 12 Underfloor system control not supplied by

Climaveneta. 13 System storage 14 Outside air temperature sensor

15 Bypass valve 16 3-way valve, domestic hot water production 17 Electric heater

Example water circuit diagram

14 AWR MTD - AWR MTD/B GB 01/2009

ELECTRICAL CONNECTIONS

I A

The heat pumps must be installed downstream of a main switch (QF1, see wiring diagram), as required by the standards in force in the country where the unit is installed. Connection to the mains power supply and the connection of the flow switch to the corresponding terminals must be performed by authorised personnel in compliance with the standards in force.

For all electrical work, refer to the electrical wiring diagrams in this manual. It is also recommended to check that:

- The characteristics of the mains electricity supply are adequate for the power ratings indicated in the electrical specifications below, also bearing in mind the possible use of other equipment at the same time.

Power to the unit must be turned on only after installation work (plumbing 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.

Vol tage 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 3%). If these parameters are not respected, contact the electricity supply company. For electrical connections, use double insulation cable in conformity with legislation in force in the country concerned..

A thermal overload switch and a lockable mains disconnect 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.

An efficient earth connection is obligatory. The manufacturer cannot be held liable for any damage caused by the failure to correctly earth the unit. In the case of three phase units, ensure the phases are connected correctly.

Do not use water pipes to earth the unit.

Electrical data at maximum conditions allowed (full load)

Size Power Maximum values Max Max

Fuses (5x20T 250V)

supply Compressor Fan/fans Pump Total

Aux. heaters (3) values (1) values (2)

F.L.I. N.L.A. L.R.A. F.L.I. F.L.A. F.L.I. F.L.A. F.L.I. F.L.A. F.L.I. F.L.A. F.L.A. F.L.A.

FU1 FU2 FU3 FU4 FU5

(V-Ph-Hz) (kW) (A) (A) (kW) (A) (kW) (A) (kW) (A) (kW) (A) (A) (A) AWR 0011 MTD 230~50 3,4 16,0 26 0,2 0,6 0,2 1,0 3,8 17,6 3,0 13,0 17,6 17,6 6.3A 8A 1A 1A 1A AWR 0025 MTD 230~50 4,1 19,0 37 0,2 0,6 0,1 1,2 4,4 20,8 4,0 17,4 20,8 20,8 1.6A 8A 1A 1A 1A AWR 0031 MTD 230~50 4,9 23,0 44 0,2 0,6 0,1 1,2 5,2 24,8 5,0 21,7 24,8 24,8 1.6A 8A 1A 1A 1A AWR 0041 MTD 230~50 6,6 27,0 45 0,2 0,6 0,1 1,2 6,9 28,8 7,0 30,4 28,8 31,6 1.6A 8A 1A 1A 1A AWR 0031 MTD 400-3N~50 4,5 8,0 48 0,2 0,6 0,1 1,2 4,8 9,8 9,0 13,0 9,8 14,2 1.6A 8A 1A 1A 1A AWR 0041 MTD 400-3N~50 5,8 10,0 64 0,2 0,6 0,1 1,2 6,1 11,8 9,0 13,0 11,8 14,2 1.6A 8A 1A 1A 1A AWR 0051 MTD 400-3N~50 6,9 11,8 64 0,2 0,6 0,1 1,2 7,2 13,6 9,0 13,0 13,6 14,2 1.6A 8A 1A 1A 1A AWR 0061 MTD 400-3N~50 8,9 15,0 74 0,2 0,6 0,1 1,2 9,2 16,8 9,0 13,0 16,8 16,8 1.6A 8A 1A 1A 1A

F.L.I. Maximum power input F.L.A. Maximum current input L.R.A. Start-up current

(1) Maximum values for sizing the protection switches and power supply cables for AWR MTD/B and AWR MTD/S/B units (2) Maximum values for sizing the protection switches and power supply cables for AWR MTD and AWR MTD/S units (with

electric heaters)

(3) Built-in heaters for versions AWR MTD and AWR MTD/S

15GB 01/2009 AWR MTD - AWR MTD/B

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 eight screws (0011) - or ten screws (0025-0061)

- 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. For the functional connection of the unit, bring the power supply cable to the electrical panel inside the unit and connect it to terminals U-N for units 0025-0041, to terminals T1 and T3 on the disconnect switch for units 0011, respecting the (U) phase, (N) neutral and (PE) earth in the case of single phase units (230V~50Hz), or U-V-W phases, N neutral and PE earth in three phase units (400V-3N~ 50 Hz).

- Reposition the inspection panel.

- Check that all the covers removed to make the electrical connections have been replaced before powering up the unit.

- Place the main switch QF1 (outside the unit) in the “ON” position.

- The “POWER” LED on the control panel comes on to signal that power is connected.

- The message ON is shown on the HSW11 control panel, signalling that power is connected.

ELECTRICAL PANEL LAYOUT AWR 0011 MTD-MTD/B SINGLE-PHASE

A1 Radio interference suppresser A2 Fan control module A3 Electronic controller A5 Peak limiter C1 Compressor start capacitor C2-3 Fan start capacitor FU3 Auxiliary circuit protection fuse

FU4 Transformer protection fuse FU5 Board power supply protection fuse TCI Autotransformer KA2 Auxiliary heating element relay KA3 High pressure switch relay KA4 Electric heater relay KA5 Domestic hot water 3-way valve relay

KA6 Compressor control relay KM2-3 Auxiliary heater contact (MTD version only) QM1 Compressor thermal overload switch QF1 Unit thermal overload switch QF2-3 Auxiliary heating element thermal overload switch (MTD

version only)

QS1 Door lock disconnect switch

16 AWR MTD - AWR MTD/B GB 01/2009

KA2 KA5

KA3 KA4

ELECTRICAL PANEL LAYOUT AWR 0025-0041 MTD-MTD/B SINGLE-PHASE

ELECTRICAL PANEL LAYOUT AWR MTD-MTD/B THREE PHASE

A1 Radio interference suppresser A2 Fan control module A3 Electronic controller A5 Peak limiter C1 Compressor start capacitor C2-3 Fan start capacitor FU1 System water pump protection fuse FU3 Heater protection fuse FU4 Transformer protection fuse FU5 Auxiliary circuit protection fuse TCI Autotransformer KA2 Auxiliary heating element relay KA3 High pressure switch relay KA4 Electric heater relay KA5 Domestic hot water 3-way valve relay KA6 Compressor control relay KA7 Alarm relay KM2-3 Auxiliary heater contact (MTD version only) QM1 Compressor thermal overload switch QF1 Unit thermal overload switch QF2-3 Auxiliary heating element thermal overload switch (MTD version

only)

QS1 Door lock disconnect switch

KA2

KA3 KA4

A1 Radio interference suppresser A2 Fan control module A3 Electronic controller A5 Peak limiter C2-3 Fan start capacitor FU1 System water pump protection fuse FU2 Fan protection fuse FU3 Heater protection fuse FU4 Transformer protection fuse FU5 Auxiliary circuit protection fuse TCI Autotransformer KA1 Phase sequence control relay KA2 Auxiliary heating element relay KA3 High pressure switch relay KA4 Electric heater relay KA5 Domestic hot water 3-way valve relay KA6 Compressor control relay KA7 Alarm relay KM2-3 Auxiliary heater contact (MTD version only) QM1 Compressor thermal overload switch QF1 Unit thermal overload switch QF2-3 Auxiliary heating element thermal overload switch (MTD version

only)

QS1 Door lock disconnect switch

17GB 01/2009 AWR MTD - AWR MTD/B

All the terminals referred to in the following explanations are to be found on the terminal board located inside the electrical panel and called “installer terminals” (see wiring diagram).

REMOTE ON/OFF (SA1)

To use a remote on/off device, connect the contact of the device to terminals 14 and 15 on the installer terminal board. Set parameter CL42 = -1. Remote off corresponds to standby status, with the compressor and pump off, yet all the safety features are active.

REMOTE SUMMER-WINTER SWITCHING (SA2)

To use a remote summer/winter changeover device, connect the contact of the device to terminals 16 and 17 on the installer terminal board. To activate the device, proceed as follows:

- From the HSW11 control panel select parameter CL43 and set it to the value +3 (contact closed = summer, contact open = winter) or -3 (contact closed = winter, contact open = summer).

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 12 and the neutral.

REMOTE KEYPAD KIT (A4)

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:

- disconnect the power supply and then access the inside of the electrical panel;

- connect the remote control module with 3 wires to terminals 22, 23 and 24 on the installer terminal board: terminal 22 connected to the GND/black terminal on the keypad; terminal 23 connected to the signal/blue terminal on the keypad; terminal 24 connected to the +12VDC/red terminal on the keypad;

To avoid interference due to magnetic fields, the use of shielded cable is recommended. The cable should not be more than 100 m long.

CONNECTING A FLOW SWITCH (F3)

If a flow switch is used, connect it to terminals 18 and 19 on the installer terminal board, after having removed the jumper.

COMPRESSOR ON SIGNAL (GN1)

For remote display of the 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.

DOMESTIC HOT WATER 3-WAY VALVE (YV2)

To configure a 3-way for the production of domestic hot water (supplied by Climaveneta), make the following connections:

- terminal 7 on the heat pump connected to the phase L

- terminal 6 on the heat pump connected to the balck wire on the 3-way valve

- brown wire on the 3-way valve connected to Phase L

- blue wire on the 3-way valve connected to Neutral N

- yellow/green wire connected to earth

The valve is also fitted with a limit switch contact. The contact is either closed or open, depending on the position of the valve. Limit switch contact (red and green wire): Closed = Valve open Open = Valve closed

The 3-way valve for the production of domestic hot water, if not supplied by Climaveneta, should have the following characteristics:

- Voltage 230V AC, 50/60 Hz

- Opening and closing time 10s.

- P delta 500 kPa

- Fluid temperature 0°C to 90°C

Use three-way valves with a pressure drop below 20 kPa.

DOMESTIC HOT WATER STORAGE TEMPERATURE SENSOR (BT4)

The domestic hot water temperature inside the storage cylinder is measured using sensor BT4, connected to terminals 20 and 21.

AUXILIARY HEATING ELEMENT (KM4)

If an auxiliary heating element is used, heater or boiler, connect the control device or contactor, as shown in the wiring diagram. For further details, see the chapter on “Operating characteristics”.

INSTALLER CONNECTIONS

I A

18 AWR MTD - AWR MTD/B GB 01/2009

SA1

RD1

UPE N

41 2 3 5678

9 101112131415161718192021222324

SA2 F3

GN1KM4

BT4 A4

YV2

Blue Black

Brown

Y/G

230 VAC 1A max

+to

Gnd Signal+12Vdc

TERMINAL BLOCK AWR 0011 MTD-MTD/B SINGLE-PHASE

UPE N

123UN

456789

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

SA1 SA2 F3 BT4 A4

+to

Gnd Signal+12Vdc

RD1GN1KM4YV2

230 VAC 1A max

Blue

Black

Brown

Y/G

TERMINAL BLOCK AWR 0025-0041 MTD-MTD/B SINGLE-PHASE

UPE V W N

456789

10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

SA1 SA2 F3 BT4 A4

+to

Gnd Signal+12Vdc

400V - 3N ~ 50Hz

RD1GN1KM4YV2

230 VAC 1A max

Blue Black

Brown

Y/G

TERMINAL BLOCK AWR 0031-0061 MTD-MTD/B THREE-PHASE

19GB 01/2009 AWR MTD - AWR MTD/B

SINGLE-PHASE WIRING DIAGRAM AWR 0011 MTD

A1 Radio interference suppresser

A2 Fan control module

A3 Electronic controller

A4 Remote unit control display keypad

A5 Compressor start

A6 Pump control module

BP3 Condenser/evaporator control pressure transducer

BT1 Water heat exchanger inlet temperature sensor

BT2 Water heat exchanger outlet temperature sensor

BT3 Outside air temperature sensor

BT4 Hot water storage temperature sensor

C1 Compressor start capacitor

C2 Fan start capacitor

E1 Water pump

EV1 Fan

F1 High pressure switch

F2 Low pressure switch

F3 Flow switch

F4 Water differential pressure switch

FU1 System water pump protection fuse

FU2 Fan protection fuse

FU3 Auxiliary circuit protection fuse

FU4 230/24/12 VAC transformer protection fuse

FU5 Board power supply protection fuse

GN1 Green compressor ON light

KA2 Hot water storage heater relay

KA3 High pressure switch relay

KA5 3-way valve relay

KA6 Compressor control relay

KA7 Alarm relay

KM2-3 Auxiliary heating element control contactor

KM4 Hot water storage heater control contactor

QF1 Chiller assembly thermal overload switch

QF2-3 Auxiliary heating element thermal overload switch

QM1 Compressor thermal overload switch

QS1 Door lock disconnect switch

R1 Compressor oil sump heater

R2 Heat exchanger frost heater

R3-4 Auxiliary heating element

R5 Drain pan frost heater

RD1 Red unit shutdown warning light

SA1 On-off switch and/or timer input

SA2 Summer-winter switch input

TC1 230/24/12 VAC transformer

YV1 Reversing valve

YV2 3-way valve (heating/DHW)

Z1 Compressor

1 Not supplied

2 Optional

AWR MTD - AWR MTD/B GB 01/2009

SINGLE-PHASE WIRING DIAGRAM AWR 0011 MTD/B (without built-in electric heaters)

A1 Radio interference suppresser

A2 Fan control module

A3 Electronic controller

A4 Remote unit control display keypad

A5 Compressor start

A6 Pump control module

BP3 Condenser/evaporator control pressure transducer

BT1 Water heat exchanger inlet temperature sensor

BT2 Water heat exchanger outlet temperature sensor

BT3 Outside air temperature sensor

BT4 Hot water storage temperature sensor

C1 Compressor start capacitor

C2 Fan start capacitor

E1 Water pump

EV1 Fan

F1 High pressure switch

F2 Low pressure switch

F3 Flow switch

F4 Water differential pressure switch

FU1 System water pump protection fuse

FU2 Fan protection fuse

FU3 Heater protection fuse

FU4 230/24/12 VAC transformer protection fuse

FU5 Board power supply protection fuse

GN1 Green compressor ON light

KA2 Hot water storage heater relay

KA3 High pressure switch relay

KA4 R3 enabling relay

KA5 3-way valve relay

KA6 Compressor control relay

KA7 Alarm relay

KM4 Hot water storage heater control contactor

QM1 Compressor thermal overload switch

QS1 Door lock disconnect switch

R1 Compressor oil sump heater

R2 Heat exchanger frost heater

R5 Drain pan frost heater

RD1 Red unit shutdown warning light

SA1 On-off switch and/or timer input

SA2 Summer-winter switch input

TC1 230/24/12 VAC transformer

YV1 Reversing valve

YV2 3-way valve (system/DHW)

Z1 Compressor

1 Not supplied

2 Optional

21GB 01/2009 AWR MTD - AWR MTD/B

SINGLE-PHASE WIRING DIAGRAM AWR 0025 - 0041 MTD

A1 Radio interference suppresser

A2 Fan control module

A3 Electronic controller

A4 Remote unit control display keypad

A5 Compressor start

BP3 Condenser/evaporator control pressure transducer

BT1 Water heat exchanger inlet temperature sensor

BT2 Water heat exchanger outlet temperature sensor

BT3 Outside air temperature sensor

BT4 Hot water storage temperature sensor

C1 Compressor start capacitor

C2-3 Fan start capacitor

E1 Water pump

EV1-2 Fan

F1 High pressure switch

F2 Low pressure switch

F3 Flow switch

F4 Water differential pressure switch

FU1 System water pump protection fuse

FU2 Fan protection fuse

FU3 Heater protection fuse

FU4 230/24/12 VAC transformer protection fuse

FU5 Auxiliary circuit protection fuse

GN1 Green compressor ON light

KA2 Hot water storage heater relay

KA3 High pressure switch relay

KA4 R3 enabling relay

KA5 3-way valve relay

KA6 Compressor control relay

KA7 Alarm relay

KM2-3 Auxiliary heating element control contactor

KM4 Hot water storage heater control contactor

QF1 Chiller assembly thermal overload switch

QF2-3 Auxiliary heating element thermal overload switch

QM1 Compressor thermal overload switch

QS1 Door lock disconnect switch

R1 Compressor oil sump heater

R2 Heat exchanger frost heater

R3-4 Auxiliary heating element

R5 Drain pan frost heater

RD1 Red unit shutdown warning light

SA1 On-off switch and/or timer input

SA2 Summer-winter switch input

TC1 230/24/12 VAC transformer

YV1 Reversing valve

YV2 3-way valve (system/DHW)

Z1 Compressor

1 Not supplied

2 Optional

22 AWR MTD - AWR MTD/B GB 01/2009

SINGLE-PHASE WIRING DIAGRAM AWR 0025 - 0041 MTD/B (without built-in electric heaters)

A1 Radio interference suppresser

A2 Fan control module

A3 Electronic controller

A4 Remote unit control display keypad

A5 Compressor start

BP3 Condenser/evaporator control pressure transducer

BT1 Water heat exchanger inlet temperature sensor

BT2 Water heat exchanger outlet temperature sensor

BT3 Outside air temperature sensor

BT4 Hot water storage temperature sensor

C1 Compressor start capacitor

C2-3 Fan start capacitor

E1 Water pump

EV1-2 Fan

F1 High pressure switch

F2 Low pressure switch

F3 Flow switch

F4 Water differential pressure switch

FU1 System water pump protection fuse

FU2 Fan protection fuse

FU3 Heater protection fuse

FU4 230/24/12 VAC transformer protection fuse

FU5 Auxiliary circuit protection fuse

GN1 Green compressor ON light

KA2 Hot water storage heater relay

KA3 High pressure switch relay

KA4 R3 enabling relay

KA5 3-way valve relay

KA6 Compressor control relay

KA7 Alarm relay

KM4 Hot water storage heater control contactor

QM1 Compressor thermal overload switch

QS1 Door lock disconnect switch

R1 Compressor oil sump heater

R2 Heat exchanger frost heater

R5 Drain pan frost heater

RD1 Red unit shutdown warning light

SA1 On-off switch and/or timer input

SA2 Summer-winter switch input

TC1 230/24/12 VAC transformer

YV1 Reversing valve

YV2 3-way valve (system/DHW)

Z1 Compressor

1 Not supplied

2 Optional

23GB 01/2009 AWR MTD - AWR MTD/B

THREE-PHASE WIRING DIAGRAM AWR 0031 - 0061 MTD

A1 Radio interference suppresser

A2 Fan control module

A3 Electronic controller

A4 Remote unit control display keypad

BP3 Condenser/evaporator control pressure transducer

BT1 Water heat exchanger inlet temperature sensor

BT2 Water heat exchanger outlet temperature sensor

BT3 Outside air temperature sensor

BT4 Hot water storage temperature sensor

C2-3 Fan start capacitor

E1 Water pump

EV1-2 Fan

F1 High pressure switch

F2 Low pressure switch

F3 Flow switch

F4 Water differential pressure switch

FU1 System water pump protection fuse

FU2 Fan protection fuse

FU3 Heater protection fuse

FU4 230/24/12 VAC transformer protection fuse

FU5 Auxiliary circuit protection fuse

GN1 Green compressor ON light

KA1 Phase sequence control relay

KA2 Hot water storage heater relay

KA3 High pressure switch relay

KA4 R3 enabling relay

KA5 3-way valve relay

KA7 Alarm relay

KM1 Compressor contactor

KM2-3 Auxiliary heating element control contactor

KM4 Hot water storage heater control contactor

QF1 Chiller assembly thermal overload switch

QF2-3 Auxiliary heating element thermal overload switch

QM1 Compressor thermal overload switch

QS1 Door lock disconnect switch

R1 Compressor oil sump heater

R2 Heat exchanger frost heater

R3-4 Auxiliary heating element

R5 Drain pan frost heater

RD1 Red unit shutdown warning light

SA1 On-off switch and/or timer input

SA2 Summer-winter switch input

TC1 230/24/12 VAC transformer

YV1 Reversing valve

YV2 3-way valve (heating/DHW)

Z1 Compressor

1 Not supplied

2 Optional

24 AWR MTD - AWR MTD/B GB 01/2009

THREE-PHASE WIRING DIAGRAM AWR 0031 - 0061 MTD/B (without built-in electric heaters)

A1 Radio interference suppresser

A2 Fan control module

A3 Electronic controller

A4 Remote unit control display keypad

A5 Compressor start

BP3 Condenser/evaporator control pressure transducer

BT1 Water heat exchanger inlet temperature sensor

BT2 Water heat exchanger outlet temperature sensor

BT3 Outside air temperature sensor

BT4 Hot water storage temperature sensor

C2-3 Fan start capacitor

E1 Water pump

EV1-2 Fan

F1 High pressure switch

F2 Low pressure switch

F3 Flow switch

F4 Water differential pressure switch

FU1 System water pump protection fuse

FU2 Fan protection fuse

FU3 Heater protection fuse

FU4 230/24/12 VAC transformer protection fuse

FU5 Auxiliary circuit protection fuse

GN1 Green compressor ON light

KA1 Phase sequence control relay

KA2 Hot water storage heater relay

KA3 High pressure switch relay

KA5 3-way valve relay

KA7 Alarm relay

KM4 Hot water storage heater control contactor

QF1 Chiller assembly thermal overload switch

QM1 Compressor thermal overload switch

QS1 Door lock disconnect switch

R1 Compressor oil sump heater

R2 Heat exchanger frost heater

R5 Drain pan frost heater

RD1 Red unit shutdown warning light

SA1 On-off switch and/or timer input

SA2 Summer-winter switch input

TC1 230/24/12 VAC transformer

YV1 Reversing valve

YV2 3-way valve (system/DHW)

Z1 Compressor

1 Not supplied

2 Optional

OPERATING CHARACTERISTICS

I A

Temperature control

Control is performed based on the system water return temperature. The set points refer to the water return temperature. The water outlet temperature depends on the difference between inlet and outlet, usually 5°C (rated). This temperature difference may change depending on the type of water circuit. For example, if the HEAT set point is set to +30°C, the outlet temperature will be +35°C. The return temperature is also used to activate the resources inside or outside unit (e.g. electric heaters). The controller features Full Floating technology that optimises, when the scan time elapses, the water temperature set points (COOL/HEAT/DHW) in relation to the compressor operating time and the water temperature. To display the actual set point, select directory Sr and the active operating mode (Cool, Heat, DHW), as described in the paragraph "Displaying installer parameters ".

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.

Heating set point

(factory setting) = 40°C, Hysteresis = 3°C. The compressor starts at outlet water 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 3 minutes.

- Minimum time since last start-up 5 minutes.

CIRCULATING PUMP

The electronic board has an output for managing the circulating pump, always on in COOL and HEAT modes, and off with a 1 minute delay when unit shuts down (standby). After the first minute 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 temperature 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 even if the controller is standby. To prevent the water freezing and damaging the plate heat exchanger, the microprocessor shuts down the compressor

if the temperature measured by the heat exchanger outlet temperature sensor is less than +4°C. 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. Reset is automatic. If the frost alarm is tripped more than 3 times in one hour, reset becomes manual.

DOMESTIC HOT WATER FROST PROTECTION

The domestic hot water frost protection function is only active if an auxiliary resource is installed for the domestic hot water storage (parameter CL61=28). The auxiliary resource is activated if the water temperature, measured by sensor BT4, is less than +5°C, and is deactivated at +7°C.

FROST PROTECTION WITH UNIT IN STANDBY Version AWR MTD (complete with built-in heaters)

The frost protection function is guaranteed by the activation of the heating element inside the unit and the start of the system pump. The pump and the first stage of the electric heater (see Tab.

1) are activated if the water temperature (measured by sen-

sor BT2 at the heat exchanger outlet) is less than 4.5°C, and are deactivated when the water temperature reaches +7°C.

Version AWR MTD/B

The frost protection function is guaranteed by the activation of the 200W electric heater used to protect the heat exchanger, and by the activation of the system pump. The pump and the electric heater are activated if the water temperature (measured by sensor BT2 at the heat exchanger outlet) is less than 4.5°C, and are deactivated when the water temperature reaches +7°C.

WATER FLOW ALARM

The microprocessor manages a water flow alarm controlled by a differential pressure switch installed as standard on the unit, and a flow switch to be installed on the water outlet piping. This safety device may trip after the first 60 seconds of pump operation, if the water flow-rate is not sufficient. The alarm shuts down the compressor and not the pump, which remains active if the alarm lasts less than 20 seconds, otherwise the unit is shut down completely.

DYNAMIC DEFROST

The unit manages the defrosts by reversing the refrigerating cycle, switching the position of the reversing valve and operating the circuit in cooling mode for a few minutes with the fans off. The defrost cycle removes the ice that forms on the surface of the outdoor heat exchanger external at low temperature and high humidity. The unit controller features smart defrost management in relation to the temperature read by the outside air temperature sensor and the pressure in the refrigerant circuit. The graph of the function is shown below.

25GB 01/2009 AWR MTD - AWR MTD/B

26 AWR MTD - AWR MTD/B GB 01/2009

The defrost cycle is started if the evaporation pressure falls below the effective start defrost set point, a value that may change, as represented in the graph, in relation to the outside air temperature. A countdown starts, and only at the end is the cycle reversed to cooling mode, if the pressure remains below the effective start defrost set point If the rises back above the effective start defrost set point, the defrost timer is set to zero. The defrost ends when the set pressure value is reached or alternatively after a maximum time.

3-WAY VALVE MANAGEMENT FOR DOMESTIC HOT WATER (YV2)

The HSW11 controller manages domestic hot water production using a 3-way valve installed outside of the unit. The production of domestic hot water is guaranteed in both summer and winter, according to the operating limits shown in this manual. An electric heater should be installed inside the DHW storage cylinder to ensure the temperature does not fall below 15/20°C in the event of extended periods of heat pump inactivity (standby).

Domestic hot water production is only enabled if the following conditions are satisfied:

- DHW storage temperature (sensor BT4) less than the DHW set point (AS01) minus the hysteresis (AS04); 3-way valve changeover to the domestic water storage;

- the time set for parameter AS10 has elapsed

- an Anti-Legionella cycle is not in progress (if activated by parameter)

Changeover from domestic hot water production to heating system hot water production:

- if the DHW storage temperature (sensor BT4) has reached the DHW set point (AS01); 3-way valve changeover to system;

- if the return water temperature (sensor BT1) has reached the DHW set point (AS01) plus a differential (AS05) that considers the possible temperature difference between the domestic water storage and the system return water temperature.

- if the maximum time (AS09) domestic hot water production time has elapsed.

System diagram

For the electrical connections of the 3-way valve and the sensor BT4 in the DHW storage cylinder, see “Wiring diagram” and the chapter “Installer connections”.

Parameter Value Description

0 Domestic hot water management disabled 1 Domestic hot water production with heat pump only

AS00

2 Domestic hot water production with DHW storage heater only

3 Domestic hot water production with heat pump and DHW storage heater AS01 50 Domestic hot water set point AS04 3 Heat pump hysteresis for domestic hot water management AS05 0 Heat pump operation differential on temperature control sensor (BT1) AS09 60 Maximum domestic hot water production time with heat pump AS10 15 Minimum interval between domestic hot water production requests with heat pump

1. Heat pump

2. Outside air temperature sensor installed on the unit

3. Three-way valve, managed by the unit

4. DHW storage

5. Storage tank (if necessary)

6. Fan coil system

7. Radiant system

The diagram is purely indicative

°C0-15

2,8

4,8

Outside air temperature

Refrigerant circuit pressure

bar

Boiler replacing the heat pump This configuration manages a boiler rather than the heat pump, for water temperatures above the limits of the unit. The boiler is enabled when the outside air temperature is less than the value of parameter HP05.

Outlet water temperature (°C)

Outside air temperature (°C)

-15-20 -5 7 45

Boiler Heat pump

Parameter Value Description

CL61 30 Configuration of output KM4 as replacement boiler

HI20 0 Deactivation of heat pump heaters HP03 -5 Differential from the maximum water temperature available with the heat pump HP05 -12 Differential from rated outside air temperature (+7°C) HP11 -5,1 Outside air temperature to shut down heat pump and activate the boiler HP12 1 Outside air temperature hysteresis to enable the heat pump

Model Power supply 1st stage 2nd stage Total

Awr 0011 MTD Single-phase 230V 1 kW 2 kW 3 kW Awr 0025 MTD Single-phase 230V 2 kW 2 kW 4 kW Awr 0031 MTD Single-phase 230V 2 kW 3 kW 5 kW Awr 0041 MTD Single-phase 230V 3 kW 4 kW 7 kW Awr 0031 MTD Three-phase 400V 3kW 6kW 9kW Awr 0041 MTD Three-phase 400V 3kW 6kW 9kW Awr 0051 MTD Three-phase 400V 3kW 6kW 9kW Awr 0061 MTD Three-phase 400V 3kW 6kW 9kW

HEAT PUMP HEATERS (AWR MTD MODELS ONLY)

The AWR MTD unit is fitted with electric heaters with the following power ratings:

The heaters can be activated as a replacement or additional source of heat, as described below.

Parameter AS00 defines the DHW storage heating mode (AS00=1 factory setting)

27GB 01/2009 AWR MTD - AWR MTD/B

ADDITIONAL HEATER (OUTSIDE THE UNIT) (KM4)

The additional heater may be configured as:

- DHW storage heater.

- Boiler replacing the heat pump.

Additional DHW storage heater The additional heater may be a electric heater or a boiler, to be connected as shown in the chapter on “installer connections”. The device is activated if the storage temperature (sensor BT4) is less than the value calculated by: Water storage temperature (BT4) < AS01-AS07-AS06

The device is deactivated if the storage temperature (sensor BT4) is above the value calculated by: Water storage temperature (BT4) > AS01-AS07

Parameter Value Description

0 Domestic hot water management disabled 1 Domestic hot water production with heat pump only

AS00 2 Domestic hot water production with additional DHW storage heater only (e.g. electric heater)

3 Domestic hot water production with heat pump and additional DHW storage heater

(e.g. electric heater) AS01 50 Domestic hot water set point AS06 3 Additional heater domestic water hysteresis AS07 0 Additional heater domestic water differential

28 AWR MTD - AWR MTD/B GB 01/2009

Outlet water temperature (°C)

Outside air temperature (°C)

-15-20 -5 7 45

Heaters

only

Heat pump

OFF

Spw -6°C

Spw -3°C

Spw

Spw = Water set point

[ºC]

1st stage enabled

2nd stage enabled

Exchanger inlet water temperature

Heaters as replacement source (factory configuration)

The electric heaters are activated to replace the compressor if its operating limits are exceeded, see the graph.

Electric heater management

Parameter Value Description

HI20 3 Enable heaters as replacement HI25 3 1st heater stage hysteresis

If the Anti-Legionella cycle is not completed, the display shows a warning. Contact an authorised service centre.

Parameter Value Description

AS06 3 Domestic hot water heater hysteresis for Anti-Legionella AS20 70 Anti-Legionella set point AS34 1h Anti-Legionella cycle duration for Thursday AS35 2 Anti-Legionella cycle start hours for Thursday AS36 0 Anti-Legionella cycle start minutes for Thursday

ANTI-LEGIONELLA FUNCTION

The Anti-Legionella function ensures the elimination of the Legionella bacteria that reside in domestic water vessels; such bacteria typically die when the water temperature is above 70°C.

The Anti-Legionella function must be activated by an authorised technician. This function is only available if an electric heater is fitted inside the DHW storage (see the function "DHW storage heater").

If the Anti-Legionella function is active, the domestic hot water is heated to 70°C for at least 60 minutes each Thursday of the week, starting at 2 am.

Deactivation of the Anti-Legionella cycle

The Anti-Legionella cycle ends if at least one of the following conditions is satisfied:

• the DHW storage temperature (sensor BT4) reaches the Anti-Legionella set point, parameter AS20

• the Anti-Legionella time has terminated, parameter AS34.

SYSTEM WATER SET POINT COMPENSATION BASED ON THE OUTSIDE TEMPERATURE

The unit is fitted with an outside air temperature sensor that is used to optimise the energy efficiency of the unit based on the outside conditions.

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

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

29GB 01/2009 AWR MTD - AWR MTD/B

AWR MTD - AWR MTD/B GB 01/2009

TIME BANDS

The HSW11 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.

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:

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

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.

31GB 01/2009 AWR MTD - AWR MTD/B

Data measured in the following conditions: (1) Heat pump operation: Outside air temperature 7°C DB- 6°C WB, water inlet 30°C and outlet 35°C (2) Heat pump operation: Outside air temperature 7°C DB- 6°C WB, water inlet 40°C and outlet 45°C (3) Chiller operation: Outside air temperature 35°C DB, water inlet 18°C and outlet 23°C (4) Chiller operation: Outside air temperature 35°C DB, water inlet 12°C and outlet 7°C (5) Noise measured at 1 metre in an open field The power input does not include the water circulating pump.

AWR MT 0011 0025 0031 0041 0031 0041 0051 0061

Heating capacity (1) kW 6,7 8,7 11 14 10,9 14,5 16,4 18,3 Power input (1) kW 1,6 2 2,6 3,2 2,5 3,2 3,9 4,1 C.O.P. 4,19 4,35 4,23 4,38 4,36 4,53 4,21 4,46 Heating capacity (2) kW 6,5 8,5 10,8 13,7 10,6 14,2 15,8 17,8 Power input (2) kW 1,9 2,6 3,3 4 3,1 4,1 4,6 5 C.O.P. 3,42 3,27 3,27 3,43 3,42 3,46 3,43 3,56 Rated water flow (1) m3/h 1,15 1,5 1,89 2,41 1,87 2,49 2,82 3,15 Useful pressure head (1) kPa 60 88 75 53 75 53 54 40 Cooling capacity (3) kW 6,5 8,4 11,8 14 11,9 14,5 16,9 18,7 Power input (3) kW 1,9 2,7 3,3 4,1 3,1 4,2 4,7 5,5 E.E.R. 3,42 3,11 3,58 3,41 3,84 3,45 3,6 3,4 Cooling capacity (4) kW 4,9 6,3 8,9 10,7 8,9 11,1 12,7 14,3 Power input (4) kW 1,8 2,6 3,2 4 3 4,1 4,6 5,2 E.E.R. 2,72 2,42 2,78 2,68 2,97 2,71 2,76 2,75 Rated water flow (3) m3/h 1,12 1,44 2,03 2,41 2,05 2,49 2,91 3,22 Useful pressure head (3) kPa 68 93 75 55 75 55 56 37 No. of fans no. 11222222 Air flow m3/s 1 1,1 1,9 1,8 1,9 1,8 1,9 1,9 Type of compressor SCROLL Number of compressors no. 11111111 Number of circuits no. 11111111 Refrigerant R410A Kg 3,2 3,1 3,1 3,1 4,1 4,1 4,8 4,8 Oil Mobil EAL ARTIC 22cc Kg 1,1 1,24 1,25 1,66 1,25 1,95 1,66 1,77 Type of pump Circular Number pumps no. 11111111 Operating weight kg 125 150 155 165 155 165 175 180 Water fittings inches 1 -3/4 1 -1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 1 1/4 Sound power EN ISO 3744 dB(A) 70 72 72 72 72 72 72 72 Sound pressure (5) dB(A) 55 58 58 58 58 58 58 58 Power supply

V/ph/Hz

230~50 400-3N~50

GENERAL TECHNICAL DATA

I A

32 AWR MTD - AWR MTD/B GB 01/2009

Water temperature head min/max= 3/8 °C Water circuit pressure min/max = 1/3 bar Maximum glycol percentage = 40%

OPERATING LIMITS

Heating

-15

30 40 50 55

-5

Outlet water temperature (°C)

Outside air temperature (°C)

Cooling

-12 0 7 18

Outlet water temperature (°C)

Outside air temperature (°C)

33GB 01/2009 AWR MTD - AWR MTD/B

CHECKING AND STARTING UP THE UNIT

PREPARING FOR FIRST START UP

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

- Functional distances have been respected;

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

- The water circuit is filled and vented. When draining after heat pump operation, take care as the water may be hot;

- 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 to ON (see wiring diagram) and the control panel “HSW11” to OFF (message “off”) to allow the oil in the compressor sump to heat up.

STARTING UP FOR THE FIRST TIME (after two hours)

Before starting the unit:

- 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).

- Make sure the remote keypad “A4” (see wiring diagram) shows OFF (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 message ON is shown on the control panel HSW11, indicating power is connected.

For the position of internal components, see the diagrams.

ACTIVATING AND DEACTIVATING THE UNIT

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

- Switch the remote keypad “A4” (if featured) ON.

- The COOLING and HEATING are ACTIVATED and DEACTIVATED on the control panel “HSW11” or the remote keypad “A4” if featured.

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

- ER20 check the water flow-rate and the connection (16 and 17) of the flow switch or differential pressure switch.

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

To access the control panel, open the door:

- remove the screw 1;

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

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. In three-phase models, check that the noise levels of the compressor are not abnormal. If this is the case, reverse one phase. Make sure the voltage is within the established limits and that, for three phase units, the unbalance between the phases is less than 3%. Check that the cover is closed again following the setting procedure.

OFF

set

esc

OFF

AWR MTD - AWR MTD/B GB 01/2009

set

esc

Button Description Press once

Associated

Press and hold Menu / Notes

[press and release] function [press for about 3 seconds]

UP - Increases a value [Manual defrost activation] Functions menu see Functions

- Goes to the next label chapter (folder FnC)

DOWN - Decreases a value [Local ON/OFF] See Local On/OFF section

- Goes to the previous label See also Functions menu Functions chapter (folder FnC)

Esc(ape) Output - Exit without saving new settings [Change mode] Operating mode menu

(Without saving - Go back to previous level See section on Changing

new settings) operating mode

Set Confirm - Confirms value / exit and save [Main display] [Main Display Menu]

(save new settings) new settings See Main Display section

- Move to next level (open folder,

subfolder, parameter, value)

- Accede al Menu Stati

ALL - Alarm acknowledgment See Manual alarm

acknowledgment and reset section

Symbol [function Combination Combined action [associated function] [Menu] / Notes

associated with the of buttons of the buttons

combined action Pressed once

of the buttons] (press and release)

[UP + DOWN]

[Manual reset]

[Esc + Set] [Open programming menu] [Programming menu]

DESCRIPTION OF THE BUTTONS AND ASSOCIATED FUNCTIONS

DESCRIPTION OF THE BUTTONS – COMBINED ACTION

HSW11 FUNCTIONS

35GB 01/2009 AWR MTD - AWR MTD/B

set

esc

LEDS AND DISPLAY

Alarm

Heating

Cooling

Standby

Defrost

1 STATUS AND OPERATING MODE LEDS

Compressor

1st auxiliary heating element stage activation

2nd auxiliary heating element stage activation

Fan

System pump

Domestic hot water function activation

External auxiliary heating element activation

3 UTILITY LEDS

Clock (RTC)

Degrees centigrade

Pressure (Bar)

Menu (ABC)

2 VALUE AND UNIT OF MEASURE LEDS

36 AWR MTD - AWR MTD/B GB 01/2009

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 HSW11 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

37GB 01/2009 AWR MTD - AWR MTD/B

... press the set button.

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

38 AWR MTD - AWR MTD/B GB 01/2009

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.

PS: The main display is set as RTC (current time).

A scroll menu will start flashing with the values StbY (standby), HEAt (heat) 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); in standby the compressor and pump are off but all the safety features are active

• Heating mode (HEAT)

• Cooling mode (COOL)

Once having selected the operating mode, press the set button.

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.

For HEAT mode, proceed in the same way.

39GB 01/2009 AWR MTD - AWR MTD/B

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.

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.di.

The first mode displayed will be COOL, then scrolling with up and down to HEAT and DHW modes (as shown on the side).

Taking the example of changing the set point for COOL mode. Select COOL from the menu and press the set button.

40 AWR MTD - AWR MTD/B GB 01/2009

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

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.

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

41GB 01/2009 AWR MTD - AWR MTD/B

From the main display, press the set button.

DISPLAYING INSTALLER PARAMETERS

Example of displaying the analogue inputs.

For the other I/Os the procedure is essentially the same***.

The display will show label Ai. (Scroll the other labels using the UP and DOWN buttons until reaching the desired label).

Press the set button to display the label for the first analogue input (in this case AiL1).

Press the set button again to display the value of AiL1. Note that the °C icon comes on to indicate that the value displayed is in degrees centigrade.

***In the case of the digital inputs / analogue inputs configured as digital inputs, the value will be:

- 0 = input inactive (for digital inputs this corresponds to the input being open, for analogue inputs configured as digital inputs it corresponds to the input being shorted to earth).

- 1 = input active (for digital inputs this corresponds to the input being shorted to earth, for analogue inputs configured as digital inputs it corresponds to the input being open)..

To change the value of the parameter press the up and down buttons. 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.

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

42 AWR MTD - AWR MTD/B GB 01/2009

DISPLAYING AUTHORISED TECHNICIAN 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.

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.

43GB 01/2009 AWR MTD - AWR MTD/B

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.

Example of displaying and resetting (tens) the operating hours for Pump 2.

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 pumps (PU01, PU02).

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

The tens of operating hours are 2. (The hours are expressed in tens: 2 indicates 20 operating hours). To reset the operating hours for 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.

44 AWR MTD - AWR MTD/B GB 01/2009

The errors will be displayed by alternating the error message...

... with the main display.

The ALARM LED is on steady.

MUTE

The alarm is muted by pressing any button once. Once any button has been pressed, the alarm LED starts flashing.

MANUAL RESET

To reset the alarm manually, press the UP and DOWN buttons at the same time [UP+DOWN]

NOTE: resetting an alarm that is still active saves the event in the alarm log.

MUTING AND MANUALLY RESETTING THE ALARMS

The alarm signals are displayed flashing. The following procedure describes how to mute an alarm. The various errors will be displayed in directory AL (see Status menu)

The controller returns to the main display.

NOTE: the ALARM LED is off.

45GB 01/2009 AWR MTD - AWR MTD/B

From the main display, press the set button

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

Press the set button to display the label for the first active alarm (if this exists).

In this case, the first alarm is Er01. Scroll any other active alarms using the UP and DOWN buttons.

NOTE: the menu is not cyclical.

For example, if alarms Er01 Er02 and Er03 are active, the display will be: Er01 ->Er02->Er03 <-Er02<-Er01

NOTE: -> UP, <-DOWN

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

DISPLAYING ALARMS

The alarm signals are displayed flashing. The following procedure describes how to mute an alarm. The various errors will be displayed in directory AL (see Status menu)

46 AWR MTD - AWR MTD/B GB 01/2009

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

the first directory displayed is PAr.

Use the UP and DOWN buttons to scroll to the directory FnC.

Press the set button to access the Functions menu.

The first label displayed is dEF.

Use the UP and DOWN buttons to select directory EUr.

Press the set button for 3 seconds.

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

RESET ALARM LOG

Below are the instructions on how to reset the alarm log if the alarm signal Er90 is shown.

47GB 01/2009 AWR MTD - AWR MTD/B

LIST OF ACCESSIBLE PARAMETERS

Directory label Meaning of the code (label) Parameters Parameters for:

CL ConFiguration CL00... CL97 Analogue input/output configuration

Cr ConFiguration Cr00... Cr50 Analogue input configuration

CF ConFiguration CF01... CF61 Serial configuration

Ui User interface UI00... UI36 User interface

tr thermoregulation tr00... Tr44 Temperature control

St Stati (Modi di funzionamento) St00... St05 Operating status

CP ComPressori CP00... CP27 Compressor Pump PI Pump (Internal) PI00... PI52 Primary water circuit pump Fan FI Fan (Internal) FI00... FI03 Circulation fans (inside)

FE Fan (External) FE00... FE59

Fans (outside) once-through heat exchanger Pump PE Pump (External) PE00 Pump once-through heat exchanger Electric HI Electric Heaters (Internal) HI00... HI26 Electric heaters, primary heat exchanger heaters HE Electric Heaters (External) HE00... HE15

Electric heaters, once-through heat exchanger

HA Electric Heaters (Auxiliary) HA00... HA02 Auxiliary electric heaters

br boiler br00... Br05 Boiler

dF deFrost dF00... dF32 Defrost

dS dynamic Setpoint dS00... dS06 Dynamic set point Ad Adaptive Ad00...Ad06 Adaptive AF AntiFreeze AF00... AF03 Frost protection AS PAR/AS AS00... AS45 Domestic hot water HP PAR/HP HP00... HP12

Table of heat pump shut-down function parameters

PL Power Limitation PL00... PL22 Forced capacity control

tE PAR/tE tE00... AL92 Time bands

AL ALarm AL00... AL82 Alarms

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

FAULT CAUSE SOLUTION

DISPLAYING ALARMS

I A

Values display indication

Er03

High pressure switch from transducer tripped

Check the fault Check high discharge pressure Check the operation of the high pressure switch Check the wiring diagram Replace the component

Values display indication

Er07

Low pressure switch from transducer tripped

Check the fault Check low discharge pressure Check the operation of the low pressure switch Check the wiring diagram Replace the component

Values display indication

Er01

High pressure switch tripped, manual reset after 3 activations in one hour, incorrect connection of power supply phases (three-phase 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 in one hour

Check the fault

Values display indication

Er30

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)

48 AWR MTD - AWR MTD/B GB 01/2009

FAULT CAUSE SOLUTION

Values display indication

Er35

High water outlet temperature

Alarm with automatic reset Check water outlet temperature Check water flow Check water temperature Set Point Check correct positioning of sensor BT2

Values display indication

Er47

HSW11 communication error with remote keypad (only if remote keypad featured)

Check electrical connection

Values display indication

Er 48

Anti-Legionella cycle not completed Contact the authorised service centre

Values display indication

Er75

Pressure transducer malfunction

Check electrical connection (see unit wiring diagrams) Replace the component

Values display indication

Er81

Compressor maintenance interval

Check operating pressure Check condition of the compressor Reset the clock

Values display indication

Er85

Water pump maintenance interval

Check condition of the water pumps Reset the clock

Values display indication

Er90

Maximum alarm log size exceeded Reset alarm log

Values display indication

Er61

Faulty BT2 water outlet sensor (automatic reset)

Check electrical connections Replace component

Values display indication

Er68

Outside air sensor BT3 malfunction (automatic reset)

Check electrical connections Replace component

Values display indication

Er60

Faulty BT1 water return sensor (automatic reset)

Check electrical connections Replace component

SHUTTING DOWN FOR LONG PERIODS

After deactivating the heat pump:

- Make sure the remote switch SA1 is open, or alternatively disconnect the unit from the power supply.

- Make sure the remote keyboard (if present) is set to “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 outside temperature may fall below zero; there is the risk of freezing. The water circuit MUST BE EMPTIED AND CLOSED (if

draining after operation in heat pump mode, beware that the water may be hot), or antifreeze must be added in the proportion recommended by the manufacturer. 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. 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.

Values display indication

Er66

Faulty domestic hot water sensor BT4

Check electrical connections Replace component

49GB 01/2009 AWR MTD - AWR MTD/B

ROUTINE MAINTENANCE

SPECIAL MAINTENANCE

Never perform any cleaning operations before having

disconnected the unit from the mains power supply. Terminals 6, 7, 8 and 9 may be live even when the unit has been disconnected.. Check for voltage 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 R410A 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 R410A 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 on page 16. 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 6, 7, 8 and 9 may be live even when the unit has been disconnected. Check for voltage 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 input;

- Tightness of electrical and water connections;

- Condition of the compressor contactor;

- Efficiency of the plate heat exchanger heater;

- Verification of operating pressure, superheat and subcooling

- Efficiency of the compressor heater

- Cleaning of the finned coil every three months

- Cleaning of the fan grills

- Cleaning of condensate drain pan (if installed);

For units installed near the sea, the intervals between maintenance should be halved.

DISPOSAL

The unit must be disposed of according to the legislation

in force in the country concerned

50 AWR MTD - AWR MTD/B GB 01/2009

TROUBLESHOOTING

No voltage

Supply voltage too low

Switch QF1 in OFF position Remote switch (if featured) in OFF position Control panel set to OFF Main switch QS1 in OFF Compressor thermal overload switch OFF

Check presence of voltage Check safety systems upstream of the appliance

Check power line

Switch ON

Contactor coil faulty HSW11 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

Check supply voltage Check electrical insulation of windings

Thermal protector tripped

Insufficient capacity

Insufficient refrigerant Sizing of unit 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

Reverse one phase

Reversed phases (three-phase units only)

The heat pump doesn’t start

FAULT CAUSE SOLUTION

51GB 01/2009 AWR MTD - AWR MTD/B

Low suction pressure (less than 3.2 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 12 bars)*

Low utility water inlet temperature

Check

Air in water circuit Vent

Insufficient refrigerant content 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 10 bars)*

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

Check

High discharge pressure (greater than 23 bars)*

High outside water temperature High utility water inlet temperature

Insufficient water flow-rate in outside heat exchanger (cooling mode) Insufficient water flow-rate in utility heat exchanger (heating mode)

Check

Check pump operation

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

Check

Air in water circuit (heating mode) Vent

Excessive refrigerant content

Check

*Values indicative only

FAULT CAUSE SOLUTION

USEFUL INFORMATION

U I A

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

TECHNICAL SERVICE DEPARTMENT CLIMAVENETA HOME SYSTEM S.R.L. ROOM AIR-CONDITIONING

via. L. Seitz, 47 - 31100 Treviso (ITALY)

www.climaveneta.it - info@climavenetahs.it

Climaveneta S.p.a.

Via Sarson 57/c 36061 Bassano del Grappa (VI) Italy Tel. +39 0424 509 500 Fax +39 0424 509 509 info@climaveneta.com www.climaveneta.com

Climaveneta Home System

Via Duca d’Aosta 121 31030 Mignagola (TV) Italy Tel. +39 0422 4131 Fax +39 0422 413659 info.cvhs@climaveneta.com www.climaveneta.com

Climaveneta France

3, Village d’Entreprises ZA de la Couronne des Prés Avenue de la Mauldre 78680 Epône France Tél. +33 (0)1 30 95 19 19 Fax +33 (0)1 30 95 18 18 info@climaveneta.fr www.climaveneta.fr

Climaveneta Deutschland

Rhenus Platz 2 59439 Holzwickede Germany Tel. +49 2301 91222-0 Fax +49 2301 91222-99 info@climaveneta.de www.climaveneta.de

Climaveneta España - Top Clima

Londres 67, 1° 4° 08036 Barcelona Spain Tel. +34 963 195 600 Fax +34 963 615 167 topclima@topclima.com www.climaveneta.com

Climaveneta Chat Union Refrig. Equipment Co Ltd

88 Bai Yun Rd, Pudong Xinghuo New dev. zone 201419 Shanghai China Tel. 008 621 575 055 66 Fax 008 621 575 057 97

COD. 5790002500_02

CLIMAVENETA AWR MTD, AWR MTD/B Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual