System air AquaScop HT V2 Manual

Air-water Heat Pump
Installation and maintenance manual
12.0 â17.9kW
12-6 / 18-9
Aqu@Scop HT V2

INSTALLATION INSTRUCTION
NOTICE D’INSTALLATION
INSTALLATIONSHANDBUCH
ISTRUZIONI INSTALLAZIONE
INSTRUCCIONES DE INSTALACIÓN
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2
Aqu@Scop HT V2
CONTENTS
1. GENERAL RECOMMENDATIONS........................................................................................................................................................ 3
1.1. SAFETY DIRECTIONS .......................................................................................................................................................................................................................3
1.2. WARNING.........................................................................................................................................................................................................................................3
1.3. EQUIPEMENT SAFETY DATA...........................................................................................................................................................................................................4
2. INSPECTION AND STORAGE .............................................................................................................................................................. 5
3. WARRANTY...................................................................................................................................................................................... 5
4. CONTENTS OF PACKAGE ................................................................................................................................................................... 5
5. PRODUCT PRESENTATION................................................................................................................................................................. 5
6. ACCESSORIES.................................................................................................................................................................................... 6
7. DIMENSIONS .................................................................................................................................................................................... 6
8. HANDLING........................................................................................................................................................................................ 6
8.1. NET WEIGHT.....................................................................................................................................................................................................................................7
9. TECHNICAL SPECIFICATIONS ............................................................................................................................................................. 7
9.1. PHYSICAL CHARACTERISTICS ........................................................................................................................................................................................................7
9.2. ELECTRICAL CHARACTERISTICS.....................................................................................................................................................................................................7
9.3. OPTIONS COMPATIBILITY...............................................................................................................................................................................................................7
9.4. OPERATING LIMITS..........................................................................................................................................................................................................................8
9.5. THERMODYNAMIC DOMESTIC HOT WATER PRODUCTION ........................................................................................................................................................9
10. REFRIGERATION AND HYDRAULIC DIAGRAM............................................................................................................................... 10
11. INSTALLATION.............................................................................................................................................................................. 10
11.1. SITING THE INSTALLATION.........................................................................................................................................................................................................10
11.2. CLEARANCE .................................................................................................................................................................................................................................11
11.3. ATTACHEMENT TO THE GROUND..............................................................................................................................................................................................11
12. HYDRAULIC LINKS........................................................................................................................................................................ 12
12.1. GENERAL RECOMMENDATIONS................................................................................................................................................................................................12
12.2. STANDARD CIRCUITS..................................................................................................................................................................................................................13
12.3. WATER QUALITY..........................................................................................................................................................................................................................19
12.4. CONNECTION TO THE CENTRAL HEATING LOOP ....................................................................................................................................................................20
12.5. HEAT INSULATION.......................................................................................................................................................................................................................20
12.6. FILLING THE SYSTEM WITH WATER..........................................................................................................................................................................................21
12.7. ELECTRONIC FLOW METER ........................................................................................................................................................................................................21
12.8. WATER FLOW REGULATION.......................................................................................................................................................................................................21
13. WIRING DIAGRAM AND LEGEND.................................................................................................................................................. 22
13.1. WIRING DIAGRAM ......................................................................................................................................................................................................................22
13.2. LEGEND ........................................................................................................................................................................................................................................22
14. ELECTRICAL CONNECTIONS........................................................................................................................................................... 25
14.1. PHASE SEQUENCE AND CUT-OUT CONTROLLER....................................................................................................................................................................25
14.2. PROGRESSIVE START-UP............................................................................................................................................................................................................26
14.3. CONNECTIONS.............................................................................................................................................................................................................................27
15. DOMESTIC HOT WATER................................................................................................................................................................. 29
15.1. CONNECTION TO THE CENTRAL HEATING LOOP ....................................................................................................................................................................29
15.2. DOMESTIC HOT WATER PRODUCTION MODES .......................................................................................................................................................................30
15.3. DOMESTIC HOT WATER HEATING FUNCTION ACTIVATION....................................................................................................................................................30
16. IN-LINE ELECTRIC HEATER ............................................................................................................................................................ 31
16.1. ELECTRICAL CONNECTIONS.......................................................................................................................................................................................................31
16.2. OPERATING MODE......................................................................................................................................................................................................................31
16.3. ELECTRIC HEATER FUNCTION ACTIVATION..............................................................................................................................................................................31
17. BOILER RELIEF.............................................................................................................................................................................. 32
17.1. ELECTRICAL CONNECTIONS.......................................................................................................................................................................................................32
17.2. OPERATING MODES....................................................................................................................................................................................................................32
17.3. BOILER RELIEF FUNCTION ACTIVATION ...................................................................................................................................................................................32
18. DUAL ZONE................................................................................................................................................................................... 33
18.1. ELECTRICAL CONNECTIONS.......................................................................................................................................................................................................33
18.2. ACTIVATING THE DUAL ZONE FUNCTION ................................................................................................................................................................................33
18.3. AMBIENCE TERMINAL ................................................................................................................................................................................................................33
19. COMMISSIONING.......................................................................................................................................................................... 34
19.1. PRE-START CHECK LIST ..............................................................................................................................................................................................................34
20. STARTING THE APPLIANCE ........................................................................................................................................................... 35
20.1. USER INTERFACE.........................................................................................................................................................................................................................35
20.2. SIMPLIFIED START-UP PROCEDURE..........................................................................................................................................................................................37
20.3. OPERATING CHECK LIST .............................................................................................................................................................................................................42
21. FINAL TASKS ................................................................................................................................................................................ 43
22. IN CASE OF WARRANTY - MATERIAL RETURN PROCEDURE ......................................................................................................... 43
23. ORDERING SERVICE AND SPARE PARTS ORDER ........................................................................................................................... 43
24. MAINTENANCE............................................................................................................................................................................. 44
24.1. SERVICING CHECKLIST................................................................................................................................................................................................................44
25. ALARM LIST AVAILABLE ON THE AQU@SCOP HT DISPLAY ........................................................................................................... 46
26. FAULTY DIAGNOSIS GUIDE............................................................................................................................................................ 53

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Aqu@Scop HT V2
POWER SUPPLY MUST BE
SWITCHED OFF
BEFORE STARTING WORK IN THE
ELECTRIC CONTROL BOX
1. GENERAL RECOMMENDATIONS
Please read the following safety precautions very carefully before installing the unit.
1.1. SAFETY DIRECTIONS
Follow the safety rules in forces when you are working on your appliance.
The installation, commissioning and maintenance of these units should be performed by qualied personnel
having a good knowledge of standards and local regulations, as well as experience of this type of equipment.
This appliance has not been designed for use by persons (including children) with reduced physical, sensorial
or mental faculties or by persons without any experience or knowledge of heating systems, unless they act
under the safety and supervision of a responsible person or have received prior training concerning the use
of the appliance.
Children should be supervised to ensure that they do not play with the appliance.
The unit should be handled using lifting and handling equipment appropriate to the unit's size and weight.
Any wiring produced on site must comply with the corresponding national electrical regulations.
Make sure that the power supply and its frequency are adapted to the required electric current of operation,
taking into account specic conditions of the location and the current required for any other appliance
connected to the same circuit.
The unit must be EARTHED to avoid any risks caused by insulation defects.
It is forbidden to start any work on the electrical components if water or high humidity is present on the
installation site.
1.2. WARNING
Cutoff power supply before starting to work on the appliance.
When making the hydraulic connections, ensure that no impurities are introduced into the pipe work.
The manufacturer declines any responsibility and the warrantly becomes void if these instructions are
not respected.
If you meet a problem, please call the Technical Department of your area.
If possible, assemble the compulsory or optional accessories before placing the appliance on its nal location.
(see instructions provided with each accessory).
In order to become fully familiar with the appliance, we suggest to read also our Technical Instructions.
The information contained in these Instructions are subject to modication without advance notice.

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Aqu@Scop HT V2
1.3. EQUIPEMENT SAFETY DATA
Safety Data R407C
Toxicity Low
In contact with skin
Liquid splashes or sprays may cause freeze burns. Unlikely to be hazardous by skin absorption.
However, R407C may be slightly irritant and, if liquid, it has a strong degreasing effect. Flush contaminated skin
areas with running water. If it comes into contact with fabrics, the liquid refrigerant will cause them to freeze
and adhere to the skin. Carefully remove the contaminated clothing since it might adhere to the skin and cause
freeze burns. Contact a doctor if the affected skin areas are reddened or irritated.
In contact with eyes Vapours have no effect. Liquid splashes or sprays may cause freeze burns. In these cases rinse your eyes with
running water or with a solution for eye lavages for at least 10 minutes. Immediately contact a doctor.
Ingestion Very unlikely to occur. If this should be the case, it may cause freeze burns. Never induce vomiting.
Keep the patient awake. Make him rinse his mouth with running water and make him drink about 1/4 of a litre.
Immediately contact a doctor.
Inhalation
R407C: High concentration levels of its vapours in the air can produce an anaesthetic effect, including the loss of
consciousness. Particularly severe exposures may cause heart arrhythmia and sometimes prove to be also fatal.
At high concentrations there is a danger of asphyxia due to a reduced oxygen content in the atmosphere.
In these cases take the patient to the open air, in a cool place and keep him at rest. Administer oxygen, if
required. Apply artificial respiration if breathing has ceased or if it has become irregular. In case of heart failure
immediately apply cardiac massage. Immediately contact a doctor.
Further Medical Advice
A symptomatic and supportive therapy is generally suitable. A heart sensitisation has been observed in some
cases, as a result of exposures to particularly high concentrations. In the presence of catecholamines (such
as for example adrenaline) in the blood flow, it has increased the irregularity of the cardiac rhythm and then
caused the heart failure.
Long-term exposure R407C: A lifetime study which has been conducted on the effects inhalation may have on rats at 50,000 ppm has shown the onset of benign tumours of the testicle. These remarks suggest that there is no danger for
human beings if they are exposed to concentrations below the occupational limits or equal to them.
Occupational exposure
limits R407C: Recommended limits: 1,000 ppm v/v
8 hours TWA.
Stability R407C: Not specified.
Conditions to avoid Use in the presence of exposed flames, red heat surfaces and high humidity levels.
Hazardous reactions Possibility of violent reactions with sodium, potassium, barium and other alkaline substances.
Incompatible materials: magnesium and all the alloys containing over 2% of magnesium.
Hazardous
decomposition
products R407 C: Halogen acids deriving from thermal decomposition and hydrolysis.
General precautions Avoid the inhalation of high concentrations of vapours. The concentration in the atmosphere shall be kept at the minimum value and anyway below the occupational limits. Since vapours are heavier than air and they tend to
stagnate and to build up in closed areas, any opening for ventilation shall be made at the lowest level.
Breathing protection In case of doubt about the actual concentration, wear breathing apparatus. It should be self-contained and
approved by the bodies for safety protection.
Storage Preservation Refrigerant containers shall be stored in a cool place, away from fire risk, direct sunlight and all heat sources,
such as radiators. The maximum temperature shall never exceed 45°C in the storage place.
Protection clothes Wear boots, safety gloves and glasses or masks for facial protection.
Behaviour in case of
leaks or escapes
Never forget to wear protection clothes and breathing apparatus. Isolate the source of the leakage, provided
that this operation may be performed in safety conditions. Any small quantity of refrigerant which may have
escaped in its liquid state may evaporate provided that the room is well ventilated.In case of a large leakage,
ventilate the room immediately. Stop the leakage with sand, earth or any suitable absorbing material. Prevent
the liquid refrigerant from flowing into drains, sewers, foundations or absorbing wells since its vapours may
create an asphyxiating atmosphere.
Disposal The best procedure involves recovery and recycle. If this is not possible, the refrigerant shall be given to a plant which is well equipped to destroy and neutralise any acid and toxic by-product which may derive from its
disposal.
Combustibility features R407C: Non flammable in the atmosphere.
Containers If they are exposed to the fire, they shall be constantly cooled down by water sprays.
Containers may explode if they are overheated.
Behaviour in case of
fire In case of fire wear protection clothes and self-contained breathing apparatus.

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Aqu@Scop HT V2
2. INSPECTION AND STORAGE
THE WARRANTY SHALL BE NULL AND VOID IN THE EVENT
OF NON-COMPLIANCE WITH ANY OF THE ABOVE CONDITIONS.
This range of air/water Aqu@Scop HT (High Temperature) appliances offers the special feature of producing
hot water at 65° C at outdoor temperatures between 0° C and -20° C, while guaranteeing a high COP.
Between 0°C and +42°C, the temperature of the hot water produced varies between 65°C and 55°C for the
Heating mode and is maintained at 60°C for the Domestic Hot Water (DHW) mode.
Consequently, this Aqu@Scop HT system is ideally suited to replace a traditional hot water boiler in producing
DHW without alterations to the rest of the system.
This technology uses two-stage compressors connected to a patented refrigeration circuit.
This technology ensures remarkably accurate "capacity supplied/heating needs" matching due to its ability
to run each compressor independently. Depending on the demand for heating capacity and the operating
temperature of heat emitters (i.e. radiators, etc.) the Aqu@Scop HT regulator selects either the small or
large compressor to operate on its own or in a two-stage mode.
3. WARRANTY
4. CONTENTS OF PACKAGE
5. PRODUCT PRESENTATION
At the time of receiving the equipment carefully cross check all the elements against the shipping documents
in order to ensure that all the crates and boxes have been received. Inspect all the units for any visible or
hidden damage.
In the event of shipping damage, write precise details of the damage on the shipper’s delivery note and
send immediately a registered letter to the shipper within 48 hours, clearly stating the damage caused.
Forward a copy of this letter to the manufacturer or his representative.
Never store or transport the unit upside down. It must be stored indoors, completely protected from
rain, snow etc. The unit must not be damaged by changes in the weather (high and low temperatures).
Excessively high temperatures (above 60 °C) can harm certain plastic materials and cause permanent
damage. Moreover, the performance of certain electrical or electronic components can be impaired.
The units are delivered fully assembled and tested.
Any modication to the units without the manufacturer’s prior approval, shall automatically render the
warranty null and void.
The following conditions must be respected in order to maintain the validity of the warranty:
²Commissioning shall be performed by specialised technicians from technical services approved by
the manufacturer.
²Maintenance shall be performed by technicians trained for this purpose.
²Only Original Equipment spare parts shall be used.
²All the operations listed in the present manual shall be performed within the required time limits.
1 HEAT Pump Aqu@Scop HT
1 Documentation pouch
1 Water lter kit
1 stop cock
4 Anti-vibration pads

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Aqu@Scop HT V2
6. ACCESSORIES
7. DIMENSIONS SEE APPENDIX
8. HANDLING
Take care to avoid any rough handling or impacts when unloading and moving the appliance. Only push or
pull the appliance by its base. Place a safety wedge between the unit base and the fork lift truck to avoid
damaging the unit’s structure and casing.
The handles present on the appliance's panels are intended for the removal/retting of the latter and must
not be used for handling the complete appliance (too heavy to be supported by the panels).
Transit holes
Ø30mm
Wedge required along the
entire length of the unit.
²Set of stop cocks with pressure tap
²Set of 2 exible pipes (length 1m)
²Hydraulic connection kit
²Sludge pot (decanting lter)
²Domestic hot water tank (300l)
²Domestic hot water plate exchanger kits for:
Wall-mounted electric tank (DHW outow via the bottom)
Floor-mounted electric tank (DHW outow via the top)
²Directional valve to be linked to the:
Domestic Hot Water function.
Boiler substitution function
Swimming pool function (with temperature probe kit)
²140 litre buffer tank
²Anti-vibration pads (Anti-vibration mountings)
²6kW in-line electric heater
²Dual zone Under-oor / Radiator heating kit (modulating valve + electric control box + temperature
probe)
²Dual zone management kit for existing valve (electric control box + temperature probe)
²Wired programmable ambience terminal
²Wireless programmable ambience terminal }Accessory recommended for an
optimal functioning

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Aqu@Scop HT V2
8.1. NET WEIGHT
9. TECHNICAL SPECIFICATIONS
9.1. PHYSICAL CHARACTERISTICS
This equipment contains uorinated gas with greenhouse gas effects covered by the Kyoto agreement.
12-6 14-7 18-9
REFRIGERANT
Type R407C
Factory charge g SEE NAME PLATE
HYDRAULIC LINKS
Inlet water gas 1" Female / Rotating nut
Outlet water gas 1" Female / Rotating nut
WATER FLOW
Nominal l/h 1030 / 1230 1480
Minimum l/h 880 / 1050 1260
Maximum l/h 1170 / 1390 1670
FANS
Fans (x2) 206W - 700tr/mn - 6000m3/h
ACOUSTIC PRESSURE
Acoustic pressure – outdoor unit dB(A) 65 65 65
12-6 14-7 18-9
184 209 213
9.2. ELECTRICAL CHARACTERISTICS
12-6 14-7 18-9
SUPPLY VOLTAGE 400V / 3 Ph / 50Hz
Start-up current draw with limiter A < 60
Maximum current
Only Aqu@Scop HT A12.2 13.2 15.2
Aqu@Scop HT + accessories A 15.5 16.5 18.5
SUPPLY VOLTAGE 230V / 1 Ph / 50Hz
Start-up current draw with limiter A < 45
Maximum current
Only Aqu@Scop HT A25.7 27.2 /
Aqu@Scop HT + accessories A 29 30.5 /
9.3. OPTIONS COMPATIBILITY
²Domestic hot water plate exchanger kits (SE4287)
²Dual zone kit (SE4288)
²Boilier relief (SE4289 or SE4290)
²Electric heater kit (SE4291 or SE4292)
²Domestic hot water tank (SE4290 or SE4291 or SE4293)
²Dual zone kit + boilier relief (SE4289)
²Dual zone kit + electric heater kit (SE4292)
²Dual zone kit + Domestic hot water tank (SE4293)
²Domestic hot water tank + boilier relief (SE4290)
²Domestic hot water tank + electric heater kit (SE4291)
The card µPC allows to install one or two options at most. The various possible congurations
are the following ones:

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SINGLE /TWO STAGE OPERATING LIMITATIONS
10
15
20
25
30
35
40
45
50
55
60
65
70
-15 -10 -5 0 5 10 15 20-20-25 25
Outdoor temperature (°C)
Leaving water temperature setpoint (°C)
Two stage – min. entering water T.
Two stage – max. leaving water T.
Single stage – max. leaving water T.
TWO
STAGE
SINGLE
STAGE
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Aqu@Scop HT V2
Aqu@Scop HT appliances are equipped with a 2-stage output system with a ratio of 1:2.
When heating needs are low and when the required outlet water temperature is below 55° C, only the
rst stage is used at reduced capacity until the temperature balance point is reached. In other cases, the
Aqu@Scop HT operates at full capacity to supply heating needs until the chosen balance point is reached.
The outlet water temperature is automatically adjusted to the water rule (heating curve) up to a maximum
temperature of 65° C.
9.4. OPERATING LIMITS

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0
0.5
1
1.5
2
2.5
800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800
kPa
Pressure loss
Water flow (l/h)
P
ressure loss
Water flow (l/h)
kPa
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800
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Aqu@Scop HT V2
9.5. THERMODYNAMIC DOMESTIC HOT WATER PRODUCTION
Tank capacity: 300l
9.5.1. PERFORMANCE
9.5.2. PRESSURE LOSS
DHW TANK
300l
3-WAY-VALVE
HEATING/DHW
The tank is equipped with a 2.5kW back-up heating element for single or three phase connection. The
performances obtained and stated in the above table are without back-up heating. For higher domestic
hot water temperatures or for Legionnaires disease protection treatment, the use of the back-up electric
heating resistances is required.
The above performance gures are stated for a system with the Domestic Hot Water tank
accessory.
12-6
Conguration C2 Compressor C1+C2 Compressor
Outdoor temp. °C 40 7 0 -10
PAC max. outlet temp. °C 60 60 65 65
Average capacity kW 9 5.5 10.6 9.3
DHW temperature °C 56 58 58 58
Time [min]
Initial temperature: 15°C min 97 163 85 98
Time [min]
Initial temperature: 35°C min 49 87 45 53
14-7
Conguration C2 Compressor C1+C2 Compressor
Outdoor temp. °C 40 7 0 -10
PAC max. outlet temp. °C 60 60 65 65
Average capacity kW 11 7.1 13.6 12
DHW temperature °C 54 57 56 57
Time [min]
Initial temperature: 15°C min 72 124 63 73
Time [min]
Initial temperature: 35°C min 35 65 32 38
18-9
Conguration C2 Compressor C1+C2 Compressor
Outdoor temp. °C 40 7 0 -10
PAC max. outlet temp. °C 60 60 65 65
Average capacity kW 13.3 8.3 16 14.1
DHW temperature °C 53 56 55 56
Time [min]
Initial temperature: 15°C min 60 103 52 61
Time [min]
Initial temperature: 35°C min 28 53 26 31

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Aqu@Scop HT V2
10. REFRIGERATION AND HYDRAULIC DIAGRAM
SEE APPENDIX
11. INSTALLATION
The unit is not designed to withstand weights or stresses from adjacent equipment, pipe work
or constructions. Any foreign weight or stress on the unit structure could lead to a malfunction
or a collapse with dangerous consequences for personnel and property. In such an event, the
warranty shall be null and void.
Unit operation depends on air temperature. Any recycling of air extracted by the fan lowers the
air intake temperature across the exchanger ns and alters the standard operating conditions.
The outdoor unit must be installed outdoors with sufcient surrounding clearance to enable unobstructed
air circulation through the appliance and access for maintenance work.
In the case of the unit being sited in areas exposed to high winds, you must avoid the wind hitting the
fan blowing surface areas directly to avoid any risk of recycling cooled air. Exchanger fan operation can be
disrupted by strong winds, which can cause de-icing problems and fan malfunctions.
The arrows show the direction of air circulation through the appliance. (Refer to the § ATTACHEMENTTO THE
GROUND, page 11).
Depending on temperature and outdoor air humidity conditions, water vapour contained in the air can
condense on the nned heat exchanger and even form ice under low outdoor temperature conditions (around
< 5°C). This condensate water and defrosted water runs off via outlets provided under the exchanger. To
aid water run-off and avoid frozen water remaining in the appliance in winter, we recommend that it is
mounted at a height of around 10cm off the ground by installing the ant-vibration mounting kit. In this way,
condensate and defrosted water can run off freely and be absorbed into the ground or channelled to a basin
built under the appliance in order to protect the environment.
In areas where outdoor temperatures fall below 1°C, the system can be equipped with a condensate anti-
freeze protection system (e.g. a heated pipe sheath, Not supplied).
In orderto contain noise levels,we equip our applianceswith quiet fans and encase the technical compartment
in sound-proofed panels. However, noise levels can be reduced even further by following a few installation
precautions:
²Do not install the appliance near a bedroom window. Avoid locating the appliance in a corner
(increased reverberated noise).
²Install the rubber pads supplied or anti-vibration pads (available as an option) under the appliance.
²Do not join the concrete slab supporting the appliance to the structure of the dwelling (structure-
borne noise transmission).
11.1. SITING THE INSTALLATION
11.1.1. PREVAILING WIND
11.1.2. CONDENSATE WATER MANAGEMENT
11.1.3. HOW TO REDUCE NOISE POLLUTION

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1711244
57414
1244.5
A
B
D
E
C
F
1%
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Aqu@Scop HT V2
11.2. CLEARANCE
When choosing the location for the appliance, take care to leave sufcient free clearance on all sides to
ensure easy access for maintenance work. The minimum free clearance dimensions indicated must be
observed to ensure both proper system operation and allow access for maintenance and cleaning.
11.3. ATTACHEMENT TO THE GROUND
Unit mounting measurements are shown
on the drawing opposite. A slope of
1 cm/m should be created to assist
rainwater drainage.
Vibration dampers must be tted during
installation to overcome any risks of
vibration being transmitted due to direct
contact with a rigid support surface.
AIR FLOW
THE UNIT MUST NEVER BE
INSTALLED ON A WALL BRACKET.
The appliance must be sited on a level and solid oor and preferably on a masonry surface.
11.3.1. MOUNTING WITH ANTI-VIBRATION SUPPORTS
ANGLED FEET PARALLEL FEET
The rear mounting foot has not
been designed to support the
weight of the unit on its own.
THE REAR FOOT MUST BE USED IN
ACCORDANCE WITH THE ASSEMBLY
ILLUSTRATED BELOW.
REF. DIMENSION
A800mm
B500mm
C500mm
D400mm
E800mm
F100mm

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Aqu@Scop HT V2
12. HYDRAULIC LINKS
When choosing and installing water pipes, you must consult and observe all current local standards,
regulations and instructions.
12.1. GENERAL RECOMMENDATIONS
You must design the pipe network with the minimum number of bends and keep the number of changes in
height to the strict minimum. This will reduce installation costs and ensure optimum system performance.
The pipe network must include:
²A vibration elimination system (e.g.: link hoses available as an accessory) on all pipes connected to
the appliance in order to reduce vibrations and noise transmitted to the building fabric.
²Stop cocks to isolate the hydraulic circuit during maintenance.
²Manual or automatic bleed valves at the highest point on the water circuit.
²A suitable system for maintaining water pressure in the circuit (expansion tank).
²The installation of thermometers and pressure gauges on the heat exchanger inlet and outlet to
facilitate day-to-day controls and system maintenance.
12.1.1. ANTI-CLOGGING PROTECTION
When installing Aqu@Scop HT appliances in existing water circuits,
a sludge trap and a removable mesh lter should be installed
upstream of the appliance.
To avoid any risk of foreign bodies entering the appliance and
to guarantee operating performance, WE STRONGLY RECOMMEND
THAT YOU INSTALL THE WATER FILTER ACCESSORY on the
Aqu@Scop HT inlet pipe.
To ensure that the system operates correctly you must use suitably sized and properly routed pipes for the
hydraulic links between the Heat pump and the mains network.
The volume of water contained in the installation must be sufcient to avoid any possibility of the compressor
"short cycling", and to guarantee adequate compressor running times in order to provide optimum service
life and to ensure that de-icing cycles are performed properly.To ensure the Aqu@Scop HT functions
efciently, available installation water volume must be:
12.1.2. MINIMUM HEATED WATER VOLUME REQUIREMENTS – BUFFER TANK.
200l < available water volume < 250l
When water circulation through heat emitters can be interrupted (thermostatic radiator valves closed) or the
heating supply halted, you must ensure that:
²The heat pump maintains its nominal water ow,
²The heat pump operates in a loop with a minimum available volume of 200 litres.
The use of a 3-speed circulation pump enables water ow through the appliance to be adapted to pressure
losses in the system. (Pump supplied set on Max position).

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12
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Aqu@Scop HT V2
Layout 1: Application without room by room regulation
This layout is recommended when the Aqu@Scop HT water ow is continuous and close to the nominal
value (no thermostatic valves).
The buffer tank (2) provides extra circulating water volume to maintain the minimum volume.
12.2. STANDARD CIRCUITS
12.2.1. AQU@SCOP HT ONLY
1. Stop cocks 2. Buffer tank (optional) 3. Filter or sludge trap 4. Relief valve 5. 3-way valve – Domestic Hot Water 6. Domestic Hot Water tank 7. Safety devices 8. Recycling circulation pump (optional) 12. Expansion tank 13. In-line heater 14. Bleed 15. Safety valve

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Aqu@Scop HT V2
Layout 2: Application with room by room regulation
This layout is recommended for heating installations with wide operating water ow variations (radiator
thermostatic valves present in the system). We strongly recommend including the buffer tank (2) as it
guarantees that the heating loop capacity is higher than the minimum volume when the maximum number
of thermostatic valves are closed.
The ow regulating valve (11) is used to balance the ow in heating mode and domestic hot water production
mode to always ensure optimum Aqu@Scop HT operation.
1. Stop cocks 2. Buffer tank (optional) 3. Filter or sludge trap 4. Relief valve 5. 3-way valve – Domestic Hot Water 6. Domestic Hot Water tank 7. Safety devices 8. Recycling circulation pump (optional) 9. Circulation pump 11. Flow regulating valve 12. Expansion tank 13. In-line heater 14. Bleed 15. Safety valve

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Aqu@Scop HT V2
Layout 3: Application with room by room regulation
This layout is also recommended for heating installations with wide operating water ow variations (radiator
thermostatic valves present in the system). Minimum system volume is guaranteed by a mixing tank (10).
Take care when calculating the volume of water in the installation and only take account of 50% of the
mixing tank's volume.
Example: For a useful volume of 100 litres the actual mixing tank volume will be 200 litres.
The ow regulating valve (11) is used to balance the ow in heating mode and domestic hot water production
mode to always ensure optimum Aqu@Scop HT operation.
1. Stop cocks 3. Filter or sludge trap 4. Relief valve 5. 3-way valve – Domestic Hot Water 6. Domestic Hot Water tank 7. Safety devices 8. Recycling circulation pump (optional) 9. Circulation pump 10. Mixing tank 11. Flow regulating valve 12. Expansion tank 13. In-line heater 14. Bleed 15. Safety valve

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Aqu@Scop HT V2
1. Stop cocks 3. Filter or sludge trap 4. Relief valve 5. 3-way valve – Domestic Hot Water 6. Domestic Hot Water tank 7. Safety devices 8. Recycling circulation pump (optional) 9. Circulation pump 10. Mixing tank 11. Flow regulating valve 12. Expansion tank 13. In-line heater 14. Bleed 15. Safety valve 18. Non-return valve
Layout 4: Domestic Hot Water (DHW) production by way of the plate exchanger kit for tment on the
existing DHW tank
Example for a wall-mounted tank (DHW outow via the bottom)
A different kit is required for a oor-mounted tank (DHW outow via the top). Please refer to the corresponding
documentation.

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Aqu@Scop HT V2
12.2.2. AQU@SCOP HT AS A BOILER SUBSTITUTE
We recommend the tting of a zone valve to avoid heat losses via the boiler when the Aqu@Scop HT is
working on its own.
All system devices should be of a suitable size to limit pressure losses.
Water ow within the heating circuit is normally driven by the circulation pump already present in the
installation (recommended solution) or by the Aqu@Scop HT's circulation pump. In this case, you must
ensure that the circulation pump generates sufcient water pressure.
There is no need to replace the existing buffer tank on the circuit to take account of the small volume of
water added by the presence of the Aqu@Scop HT.
IMPORTANT: the hydraulic kit available as an option enables you to prepare the circuit for connection to the
Aqu@Scop HT in accordance with our recommendations. The hydraulic kit is available with or without zone
valves. DO NOT FIT A BOILER SUBSTITUTE VALVE
1. Stop cocks 3. Filter or sludge trap 4. Relief valve 5. 3-way valve – Domestic Hot Water 6. Domestic Hot Water tank 7. Safety devices
8. Recycling circulation pump
(optional)
9. Circulation pump 10. Mixing tank 11. Flow regulating valve 12. Expansion tank
16. 3-way boiler substitute valve 17. Boiler
²WALL-MOUNTED GAS-FIRED BOILER with domestic hot water production and a single
circulation pump used for both heating and domestic hot water.
²BOILER with a circulation pump.

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9a 9b
19 20
21 21
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Aqu@Scop HT V2
1. Stop cocks 3. Filter or sludge trap 4. Relief valve 5. 3-way valve – Domestic Hot Water 6. Domestic Hot Water tank 7. Safety devices 8. Recycling circulation pump (optional)
9. Circulation pump (a: radiator / b:
under-oor heating)
10. Mixing tank 11. Flow regulating valve 12. Expansion tank 16. 3-way boiler substitute valve 17. Boiler
19. Low temperature zone
(under-oor heating) 3-way modulating valve)
20. Under-oor heating outlet
temperature probe (DZWT)
21. Collector
12.2.3. AQU@SCOP HT – DUAL ZONE INSTALLATION (UNDER-FLOOR HEATING + RADIATORS)
The Aqu@Scop HT manages a radiator zone (high temperature, zone 2) and an under-oor heating zone
(low temperature, zone 1) by way of an under-oor temperature outlet probe, a modulating 3-way valve
(230V 3 phase motor) and a water circulation pump for each zone.
Each zone can be controlled by a dedicated ambience terminal, which then enables the Aqu@Scop HT to
manage 2 independent water laws. When the radiators zone is not in operation, the Aqu@Scop HT switches
over automatically to the under-oor heating water law, and thereby optimises the seasonal COP for the
entire installation.