Atlantic Aurea M Series User manual

U0618930_1883_EN_5
22/02/2019
For professionals
To be kept by the user for future reference
EN
Outdoor unit
AEYC-0639U-AT
AEYC-1039U-AT1
AEYC-1039U-AT2
AEYC-1639U-AT
Hydraulic unit
023227
INSTALLATION
Aurea M
Air/water heat pump single service Monobloc system
Heat pumps & boilers

■Installation and maintenance rules
The appliance must be installed and maintained by
an approved professional in accordance with the
prevailing regulations and code of practice.
■Handling
The outdoor unit must not be in a horizontal position
during transport.
Transport in a horizontal position may damage the
appliance by moving the refrigerant and damaging
the compressor's suspensions.
Damage caused by transportation in a horizontal
position is not covered by the warranty.
If necessary, the outdoor unit may be tilted during
manual handling (to go through a door or use a
staircase). This operation must be conducted very
carefully and the appliance must be immediately
restored to the upright position.
■Hydraulic connections
The connection must comply with good engineering
practices according to the regulations in force.
Reminder: Make the assembly seals according to
good engineering practices in force for plumbing
work:
- Use suitable seals or gaskets (bre seals, O rings).
- Use Teon or hemp tape.
- Use sealant (synthetic as required).
Use glycol water if the min starting temperature set
is lower than 10°C.
Use glycol water if the outdoor hydraulic links are
subject to a frost risk.
For the outdoor hydraulic links, use an insulator
which is suitable for outdoor use and is UV-resistant
(usage temperature -20 to +70 °C).
If glycol water is used, carry out an annual check of
the quality of the glycol. Use monopropylene glycol
only. The recommended concentration is 30%
minimum. Never use monoethylene glycol.
• In certain installations, the presence of di󰀨erent
metals can cause corrosion problems; in this
case, the formation of metal particles and
sludge in the hydraulic circuit is seen.
• Use a corrosion inhibitor in the proportions
recommended by its manufacturer.
• It is also necessary to ensure that the treated
water does not become aggressive.

■Electrical connections
• Always check that the electric power supply is
switched o󰀨 before works.
• Characteristics of the electrical power supply
The electrical installation must be conducted in
accordance with the regulations in e󰀨ect:
For installations with no neutral, a galvanic insulation
transformer earthed to the secondary must be used.
The electrical connections will only be made when
all of the other assembly operations (attachment,
assembly, etc.) have been carried out.
Warning!
The contract taken out with the energy supplier
must be su󰀩cient to cover the power of the heat
pump as well as the sum of the power requirements
of all of the appliances likely to be operated at the
same time. If the power supply is insu󰀩cient, check
with your energy supplier the value of the power
supply dened in your contract.
Never use a socket for the power supply.
The heat pump must be directly powered (without
external switch) by dedicated lines that are protected
from the electrical housing by bipolar circuit breakers
dedicated to the heat pump, curve D for the outdoor
unit, curve C for the electrical DHW back-ups
(see “Specications”, page 7).
The electrical installation must be equipped with a
di󰀨erential protection of 30 mA.
This appliance is designed to operate under a
nominal voltage of 230 V +/- 10%, 50 Hz.
• General remarks on electrical connections
It is essential to maintain the phase-neutral polarity
when making the electrical connections.
Rigid wire is always preferable for xed installations,
especially in buildings.
Clamp the cables with stu󰀩ng glands to avoid any
accidental disconnection of the conductive wires.
Connection to earth and earth bonding continuity
are essential.
• Connecting to screw terminals
Use of ring terminals or tips is prohibited.
- Always choose a wire that complies with current
standards.
- Strip the end of the wire over a length of around
25 mm.
- With round nosed pliers, make a loop with a
diameter that corresponds to the terminal's
tightening screws.
- Tighten the terminal screw on the loop very rmly.
Insu󰀩cient tightening can cause overheating,
leading to breakdown or even a re.
Rigid wires Loop
25 mm Lug on
exible wires
prohibited
Special screw and
washer
Terminal
block
• Connecting to regulation boards
- Remove the corresponding connector and make
the connection.
Precabled wiring connector and/or screw connector
• Connecting to spring terminals
- Strip the end of the wire over a length of around
10 mm.
- Push the spring with a screwdriver so that the wire
enters the cage.
- Slide the wire into the opening provided for this
purpose.
- Remove the screwdriver and then check that the
wire is jammed in the cage by pulling on it.
2
1
3

- 4 -
Contents
 Presentation of the equipment 6
Packing list ..............................6
Unpacking and reservations .................6
Optional equipment ........................6
Scope ..................................6
Specications ............................7
Operating principle .......................12
 Location 14
Installing the outdoor unit ..................14 the hydraulic unit .........................16
 Hydraulic connection 18
Rinsing the installation ....................18
Hydraulic connection of the outdoor unit .......18
Hydraulically connecting the heating circuit ....18
Heating installation volume .................19
Filling and draining the installation ...........19
 Electrical connection 20
Cable section and protection rating...........21 Electrical connections on the outdoor unit side ..22
Electrical connections on the hydraulic unit side..24
 Start-up 28
Conguration of the ambient sensor ..........28
Conguration of the room control unit .........28
Heating circulation pump speed settings.......29
Minimum ow settings of the installation .......29
Cleaning the lter valve ....................29
 Regulation interface 30
The user interface, the central ambient unit (option)
and the ambient sensor (option) .............30 Description of the display ..................32
Weather-dependent control.................32
 Regulation menu 34
List of function lines.......................35
Aurea M / Installation / 1883 - EN

- 5 -
 Maintenance 55
 Fault diagnostic 50
Faults displayed on the hydraulic unit .........50
Faults displayed on the outdoor unit ..........51
Information display .......................54
 Maintenance 55
Hydraulic checks .........................55 Checking the electrical circuit ...............55
Draining the hydraulic unit..................55 Directional valve .........................55
 Appendices 56
Overall hydraulic layout ....................56 Electrical cabling diagrams .................60
Start procedure 64
Commissioning check-list ..................64
Conguration le .........................66
Start-up data sheet .......................67
ErP performance gures 67
 Instructions for the user 67
Aurea M / Installation / 1883 - EN

- 6 -
 Presentation of the equipment
►
Packing list
- 1 package: Outdoor unit.
- 1 package: Hydraulic unit and outdoor temperature
sensor.
Heat pump Outdoor unit Hydraulic unit
Model Reference Model Reference Code Reference Code
Aurea M 5 526900 Aurea 5 AEYC-0639U-AT 700125
Aurea M 023227
Aurea M 8 526901 Aurea 8 AEYC-1039U-AT2 700126
Aurea M 10 526902 Aurea 10 AEYC-1039U-AT1 700127
Aurea M 16 526903 Aurea 16 AEYC-1639U-AT 700129
►
Scope
This heat pump provides:
- Heating in winter,
- the addition of electrical back-ups, for extra heating
on the coldest days,
or
- Installation with boiler connection* as a supplementary
heating for the coldest days,
- Control of two heating circuits*,
- Production of domestic hot water* (provided that
combined with a DHW tank),
- Cooling in summer* (for underoor heating-cooling
system or fan-convectors).
*: These options require the use of additional kits
(see § “Optional equipment”, page 6).
►
Unpacking and reservations
In the presence of the carrier, carefully inspect the
general appearance of the appliances and check that
the outdoor unit has not been placed in a horizontal
position.
In the event of disagreement, write to the carrier within
48 hours mentioning all reserves and send a copy of
this letter to the After Sales Department.
►
Optional equipment
-Dual circuit kit (ref. 074046)
for connecting 2 heating circuits.
-Electrical back-up kit (ref. 073985)
-DHW kit Internal (ref. 074047)
for connecting a DHW tank
(with built-in electrical back-ups).
[Not compatible with Boiler connection kit]
-DHW kit External (ref. 073991)
for connecting a DHW tank
(with built-in electrical back-ups).
-Boiler connection kit (code 073989)
for connecting a boiler to the heat pump.
-Ambient sensor T55 (ref. 073951),
Radio ambient sensor T58 (ref. 075313)
to correct the ambient temperature.
-Central ambient unit T75 (ref. 073954),
Central radio ambient unit T78 (ref. 074061)
to correct the ambient temperature and programme
the heat pump.
-Heating cable (ref. 809644)
Aurea M / Installation / 1883 - EN

►
Specications
Model name Aurea 5 8 10 16
Nominal heating performances (outdoor temperature/ initial temperature)
Heat output
+7°C/+35°C - Under-oor heating kW 5.00 8.00 10.00 16.00
-7°C / +35°C - Under-oor heating kW 3.55 7.10 8.00 12.50
+7°C / +55°C - Radiator kW 3.88 7.50 8.90 12.80
-7°C / +55°C - Radiator kW 2.91 4.80 5.80 8.40
Power absorbed
+7°C / +35°C - Under-oor heating kW 1.19 1.78 2.30 4.08
-7°C / +35°C - Under-oor heating kW 1.38 2.93 3.32 5.68
+7°C / +55°C - Radiator kW 1.56 2.67 3.25 5.10
-7°C / +55°C - Radiator kW 1.78 2.95 3.35 5.53
Coe󰀩cient of performance (COP) (+7°C/+ 35°C) 4.20 4.50 4.35 3.92
Nominal cooling performances (outdoor temperature/ initial temperature)
Cool output
+35°C / +18°C - Cooling oor system kW 3.15 6.00 7.50 14.30
+35°C / +7°C - Fan convector kW 2.40 4.50 5.60 10.70
Power absorbed
+35°C / +18°C - Cooling oor system kW 0.75 1.75 2.35 4.15
+35°C / +7°C - Fan convector kW 0.76 1.79 2.40 4.23
Cooling E󰀩ciency (EER) (+35°C / + 18°C) 4.20 4.43 3.19 3.45
Electrical characteristics
Electrical voltage (50 Hz): V 230
Maximum current of the appliance A10.9 15.2 17.5 25.3
Nominal current A5.6 8.0 10.2 17.8
Heating maximum electrical back-up current (option) A13.05 / 26.1
Heating electrical back-up power (option) kW 6 kW
Outdoor unit maximum power absorbed W 2500 3500 4025 5820
Rates as per EN14825 0.008 0.005 0.004 0.002
Hydraulic circuit
Maximum operating pressure MPa (bar) 0.3 (3)
Minimum/maximum ow rate of the hydraulic circuit at
4°C<Δt<8°C (nominal conditions) l/h 300 / 1200 600 / 2100 600 / 2100 900 / 3000
Miscellaneous
Weight of the outdoor unit kg 49 72 72 117
Noise level at 5 m 1 (Outdoor unit) dB (A) 47 (4) 47 (4) 47 (4) 47 (4)
Sound power level as per EN 12102-1 Annex A 2 (Outdoor unit) dB (A) 60 62 65 66
Pipe diameters Flow/Return (Outdoor unit) Inches 3/4 1 1 1 1/4
Weight of hydraulic unit (empty/full of water) kg 40 / 62
Hydraulic module water capacity l 22
Noise level at 1 m 1(Hydraulic unit) dB (A) 39 (4)
Sound power level as per EN 12102-1 Annex A 2(Hydraulic unit) dB (A) 46
Heating system operating limits
Min /max outdoor temperature °C -20 / +43
Initial max. heating water temperature °C Under-oor heating °C 45 (4)
Max. water temperature for start of heating LT radiator °C 55
Initial min. water temperature °C 8 (4)
Refrigerant circuit
Factory charge of refrigerating uid R410A 3g 1050 1720 1720 2990
Maximum operating pressure MPa (bar) 4.1 (41)
1 Sound pressure level at (x) m from the appliance, 1.5m from the ground, free eld, directivity 2.
2 The acoustic power is a measurement made in the laboratory of the power of the noise emitted but contrary to the noise level, it does not correspond to the measurement of what is felt.
3Refrigerant R410A in compliance with standard NF EN 378.1.
4 Temporary values.

- 8 -
g. 6 - Outdoor unit dimensions (in mm)
■ Outdoor unit Aurea 5
■ Outdoor unit Aurea 8 & Aurea 10
■ Outdoor unit Aurea 16
680185
357
80 80
241000 3637 330
1418
205590205
Circulating water
outgoing port
Circulating water
return port
R1 1/4(32A)
R1 1/4(32A)
882
850 24
R1(25A)
R1(25A)
25 330 38
480173
155540155
75 70
357
Circulating water
return port
Circulating water
outgoing port
327
57
388
R3/4(20A)
30015.3 42
825 73
675
580
43
Circulating water
return port
Circulating water
outgoing port
54
122.5122.5
Circulating water
return port
Circulating water
outgoing port
Circulating water
outgoing port
Circulating water
outgoing port
Circulating water
return port
Circulating water
return port
Aurea M / Installation / 1883 - EN

- 9 -
98
97
450
803
845
457
84
479
g. 7 - Hydraulic unit dimensions in mm
g. 8 - Accessories supplied with the outdoor unit g. 9 - Accessories provided with the hydraulic module.
■Hydraulic unit Aurea M
1* 3**
2* 4
1 Elbow for condensate
evacuation
12 Support to secure the hydraulic
unit.
3Outdoor sensor to detect the outdoor
temperature
4 Insulating sleeves to insulate the
hydraulic connectors
5 Filter valve to be installed on the
hydraulic circuit return
23
4 5
Aurea M / Installation / 1883 - EN

- 10 -
g. 10 - Components (outdoor units)
■ Outdoor unit Aurea 5
■ Outdoor unit Aurea 8 & Aurea 10
■ Outdoor unit Aurea 16
1 - Main board.
2 - Board.
3 - Terminal block.
4 - Safety valve.
5 - Bleed valve.
6 - Compressor.
7 - Circulation pump.
8 - Plate heat exchanger.
1
2
3
4
5
6
8
7
1
2
3
4
5
6
8
7
1
2
3
8
4
5
6
7
Aurea M / Installation / 1883 - EN

- 11 -
g. 11 - Hydraulic unit components
1 - Electric box.
2 - Regulator / User interface.
3 - On/O󰀨 switch
4 - Bleed tap.
5 - Manometer
6 - Expansion vessel.
7 - Bu󰀨er
(Electrical back-up optional).
8 - Manual drainer.
9 - Flow-meter.
A - Outdoor unit intake
B - Outgoing heating ow.
2
1
35A B
4
6
7
8
-50
1000
10000
43907
2490
338
-25025 50 75
°C
°C
0
2500
5000
7500
10000
12500
15000
17500
20000
22500
25000
27500
30000
32500
0102030405060708090 100
B3977
Outdoor sensor QAC34.
Return sensor.
Outlet sensor.
■Hydraulic unit Aurea M
g. 12 - Ohmic value of the sensors (hydraulic unit)
9
Aurea M / Installation / 1883 - EN

- 12 -
►
Operating principle
The hydraulic unit has a regulator that controls the
indoor temperature based on the measurement of the
outdoor temperature, known as weather-dependent
control. The room thermostat (optional) corrects the
weather-dependent setpoint.
The hydraulic unit may be equipped with an electrical
back-up system*, which is designed to provide additional
heat during the coldest periods.
■Regulation functions
- The initial temperature of the heating circuit is
controlled by the weather-dependent setpoint.
- The power of the heat pump is modulated according to
ow heating temperature via the "inverter" compressor.
- Control of the electrical back-up*.
- The daily timer programme enables you to dene
the periods for comfortable or reduced ambient
temperature.
- Switching between summer/winter operation is
automatic.
- Room thermostat*: The room thermostat corrects the
weather-dependent setpoint.
- Domestic hot water* Heating time program, control of
the operation of the DHW circulation pump.
- Managing the cooling.
■Fan coil units with integrated regulation
Do not use a room thermostat in the zone concerned.
■Protection functions
- Legionella cycle for domestic hot water.
- Frost protection: Frost protection cuts in if the low-
temperature point of the heating circuit falls below 5 °C.
■ Domestic hot water (DHW) operating principle*
Two domestic hot water (DHW) temperatures may
be set: comfort temperature (line 1610 at 55 °C)
and reduced temperature (line 1612 at 40 °C).
The DHW programme (line 560, 561 and 562) is set by
default to a comfort temperature from 0:00 to 5:00 and
from 14:30 to 17:00 and a reduced temperature for the
rest of the day, which optimises electricity consumption
while ensuring comfortable levels of hot water and
heating.
Setting for reduced temperature can be useful to prevent
the DHW from switching on too often and for too long
during the day.
The production of domestic hot water (DHW) is triggered
when the temperature in the tank falls 7 °C below the
temperature setpoint.
The heat pump produces domestic hot water (DHW),
which is then heated further, if required, by the electrical
back-up system inside the tank.
To ensure a DHW setting over 45 °C, the electrical
back-up heating must be left on.
Depending on how the parameter (1620) is set, nominal
temperature can be reached 24h/day or only at night or
depending on the heat pump program.
If the contract concluded with the energy provider
includes a subscription to day/night tari󰀨, the electrical
back-up is subordinate to the supplier's power tari󰀨 and
the comfort temperature may only be reached at night.
If no particular contract is concluded, the comfort
temperature can be reached at any time, including
during the day
DHW production takes priority over heating;
nevertheless the production of DHW is controlled by
cycles that control the times assigned to the heating
and the production of DHW in the event of simultaneous
demand.
A switching function of "reduced" to "comfort" is available
on the front panel of the user interface (see item g. 27,
page 30).
Legionella cycles can be programmed.
*: These options require the use of additional kits (see § “Optional equipment”, page 6).
Aurea M / Installation / 1883 - EN



- 14 -
> 600 mm
> 600 mm
>300 mm
> 100 mm
>100 mm
> 600 mm
> 600 mm
>300 mm
> 100 mm
>100 mm
> 600 mm
> 600 mm
>300 mm
> 100 mm
>100 mm
 Location
►
Installing the outdoor unit
▼
Installation precautions
The outdoor unit must only be installed
outdoors. If a shelter is required, it must have
broad openings on all 4 walls and comply with
the installation clearances.
• Choose the installation site after talks with the
customer.
• Prefer a sunny location, sheltered from strong and
cold dominant winds.
• The unit must be easily accessible for future installation
and maintenance work.
• Ensure that the connectors can be easily connected to
the hydraulic unit.
• The outdoor unit can be exposed to bad weather,
however avoid installing it in places where it will
become dirty or have excessive water dripping onto it
(for example under a leaky drainpipe).
• When operating water may escape from the outdoor
unit. Do not install the appliance on a terrace; install
it in a well-drained location (bed of gravel or sand).
If installed in a region where the temperature may
drop below 0 °C for a long period of time, check
that the ice does not cause any danger. A drainage
pipe can also be connected to the outdoor unit
(see g. 14, page 15).
• Nothing should obstruct the air from circulating through
the evaporator and out of the fan.
• Keep the outdoor unit away from sources of heat or
inammable products.
• Ensure that the appliance does not disturb neighbours or
users (noise level, draughts caused, low temperature of
the air blown causing a risk of freezing plants in its path).
• The surface on which the outdoor unit is mounted must:
- Be permeable (earth, gravel bed...),
- Support the weight comfortably,
- Permit it to be solidly attached,
- Not transmit any vibration to housing.
Anti-vibration pads are available as an optional extra.
• The wall bracket cannot be used in conditions likely to
transmit vibrations, where installation on the ground is
preferred.
■ Outdoor unit Aurea 5
■ Outdoor unit Aurea 8 & Aurea 10
■ Outdoor unit Aurea 16
g. 13 - Minimum installation clearances
around the outdoor unit
Aurea M / Installation / 1883 - EN

- 15 -
▼
Positioning the outdoor unit
The outdoor unit must be raised by at least 50 mm
from the ground. In snowy regions, this height must be
increased but must not exceed 1.5 m.
Fasten the outdoor unit using screws and elastic
tightening or toothed lock washers to prevent them from
coming loose.
g. 14 - Positioning the outdoor unit,
Discharging condensates
C
H
H
C
* In regions subject to frequent snow,
(H) must be greater than the average snow layer.
In regions with heavy snowfall, if the outdoor
unit's entrance and exit are blocked by snow
it may be di󰀩cult to heat up and may probably
cause a breakdown.
The outdoor unit may generate a large volume
of water (called consensates).
Build a canopy or position the unit on a high stand (local
conguration).
- Put the appliance on a solid support to minimise
impact and vibration.
- Do not set the unit directly on the ground as this may
generate disruptions.
▼
Connecting the condensate evacuation
pipe
If the use of a drain hose is imperative:
- Use the elbow provided (C) and connect a hose of
16 mm diameter to discharge the condensates.
- Provide for the gravitational discharge of the
condensates (waste water, rainwater, gravel bed).
If the appliance is installed in a region where
the temperature may fall below 0 °C for long
periods, t the drain hose with a trace heater
to prevent it from icing over. The trace heater
must not only heat the drain hose but also the
bottom of the appliance's condensate drain
pan.
Aurea M / Installation / 1883 - EN

- 16 -
►
the hydraulic unit
▼
Installation precautions
The choice of the position for installation is
particularly important insofar as any later
movement is a delicate operation requiring the
intervention of a qualied person.
• Choose the site of the heat pump and the hydraulic
unit after discussion with the customer.
• The room where the appliance operates must comply
with the regulations in force.
• To ease maintenance operations and provide access
to the various parts, su󰀩cient space should be left
around the hydraulic unit.
• Be careful to keep the heat pump away from
inammable gas during installation, in particular when
it requires brazing. The appliances are not reproof
and should therefore not be installed in a potentially
explosive atmosphere.
▼
Positioning the hydraulic unit
- Secure the support (4 screws and plugs) to a at,
sturdy wall (not a light-weight partition) ensuring that
it is correctly levelled.
- Hook the appliance onto its support.
350 mm
mini
1000 mm
300 mm
mini 118 mm
(S)
538 mm
mini
418 mm
mini
300 mm
mini
350 mm
mini
188 mm
g. 15 - Mounting bracket
Aurea M / Installation / 1883 - EN

- 17 -
1
A
1
A
2
3
(S)
4
5
6
B
6
B
7
g. 16 - Remove the panel
Aurea M / Installation / 1883 - EN

- 18 -
 Hydraulic connection
►
Rinsing the installation
Before connecting the hydraulic unit to the installation,
rinse the heating system correctly to eliminate the
particles that could compromise the correct operation
of the appliance.
Do not use solvents or aromatic hydrocarbons (petrol,
para󰀩n, etc.).
For older installations, t a decanting pot of adequate
capacity on the boiler return circuit and at the lowest
point equipped with a drain, in order to collect and
evacuate the impurities.
Add an alkaline product to the water and a dispersant.
Rinse the installation several times before nal lling.
►
Hydraulic connection of the
outdoor unit
Connect the pipe of the outdoor unit to the hydraulic unit
respecting the direction of ow.
Install the valve lter on the heating return circuit in the
manner suggested.
Use union connectors to facilitate removal.
►
Hydraulically connecting the
heating circuit
Connect the pipe of the central heating to the hydraulic
unit respecting the direction of ow.
The diameter of the pipe between the hydraulic unit and
the heating manifold must be at least equal to 1 inch
(26x34 mm).
Use union connectors to facilitate removal.
Prioritise connector hoses to avoid transmitting noise
and vibrations to the building.
Calculate the diameter of the pipes according to the
ow rates and the lengths of the hydraulic systems.
Tightening torque: 15 to 35 Nm.
Connect the drains from the drain valve and the safety
valve to the main sewer system.
Check that the expansion system is operating correctly.
Control the vessel pressure (precharge 1 bar) and the
safety valve setting.
The installation ow rate must be at least equal to
the min. value noted in the table “Specications”,
page 7. Installing a regulation mechanism (other
than those present in our congurations) which reduces
or stops the ow through the hydraulic unit is prohibited.
g. 17 - Installing the lter valve
g. 18 - Hydraulic connections
Torque : 15 to 35 Nm
Couple : 15 à 35 Nm
U0537667-A
Tightening torque: 15 to 35 Nm
Aurea M / Installation / 1883 - EN

- 19 -
►
Heating installation volume
The installation's min. water volume must be respected.
Install a bu󰀨er tank on the heating circuit return if the
volume is lower than this value. In the case of an
installation equipped with thermostat valves, you must
ensure that this min. water volume can circulate.
Theoretical volume in litres PER CIRCUIT (excl. HP)
Equipment Obligation
Fan convector
Recommendation
Radiators
Recommendation
Floor heating-cooling system
Aurea M 5 23 12 2
Aurea M 8 23 12 2
Aurea M 10 36 33 15
Aurea M 16 49 44 22
►
Filling and draining the installation
- Check the attachment of the pipes, that the connectors
are tight and that the hydraulic unit is stable.
- Check the water ow direction and that all of the valves
are open.
- Fill the installation.
Do not operate the circulating pump while lling. Open all
the drain valves in the installation and the bleeder valve
(P) for the hydraulic unit to remove the air contained in
the conduits.
- Close the drains and add water until the pressure of
the hydraulic circuit reaches 1 bar.
- Check that the hydraulic circuit is drained correctly.
- Check that there are no leaks.
After the “ Start-up”, page 28 stage, once the
machine has started, purge the hydraulic unit again.
Precise lling pressure is determined by the
manometric head of the installation.
P
g. 19 - hydraulic unit manual bleeder valve
Aurea M / Installation / 1883 - EN

- 20 -
 Electrical connection
Ensure that the general electrical power supply has been cut o󰀨
before starting any repair work.
The electrical installation must be conducted in accordance with
the prevailing regulations.
The electrical diagram of the hydraulic unit is detailed in g. 34, page 62.
bar
4
3
2
1
0
OK
ESC
Outdoor sensor
cable 2 x 0.75 mm²
Room thermostat (optional)
cable 2 x 0.5 mm²
Radio room thermostat UA55
(optional)
Electrical
panel
Electrical back-up power supply
(see table below)
General electrical power supply
(see table below)
Interconnection between
the heat pump and the hydraulic unit
Phase, Neutral, Earth, Communication bus
4 x 1.5mm² cable
Radio central ambient unit (option)
Central ambient unit (option)
cable 3 x 0.5 mm²
or
or
or
g. 20 - Overall layout of the electrical connections for a single installation
OFF
ON
1
2
U0629273-A
Aurea M / Installation / 1883 - EN