Atlantic Alfea Excellia HP Duo A.I. Series User manual

U0641392_1945_EN_3
10/09/2019
For professionals
To be kept by the user for future reference
EN
Outdoor unit
WOYG160LJL
WOYK150LJL
WOYK170LJL
Hydraulic unit
024145
024147
INSTALLATION
Alféa Excellia HP Duo A.I.
Air/water heat pump split 2 services
Heat pumps & boilers

■Installation and maintenance rules
The appliance must be installed and maintained
by an approved professional in accordance with
current regulations and codes of practice.
• Warning, hydraulic unit should not be installed
in an air current.
■Handling
The outdoor unit must not be placed in a horizontal
position during transport.
If not kept upright during transport, the appliance
could be damaged through displacement of
the refrigerant and damage to the compressor
suspension.
Any damage caused by transportation in a horizontal
position is not covered by the warranty.
If necessary, the outdoor unit may be tilted only
during manual handling (to go through a door or up
a staircase). This operation must be conducted very
carefully and the appliance must be immediately
restored to the upright position.
■Containment of refrigeration circuits
All refrigeration circuits are sensitive to contamination
from dust and moisture. If such pollutants penetrate
the refrigeration circuit, they can a󰀨ect the reliability
of the heat pump.
Make sure that the connections and refrigeration
circuits (hydraulic unit, outdoor unit) are
protected correctly.
In the event of a subsequent failure and following
an inspection, the presence of moisture or
foreign bodies in the compressor oil would
automatically void the warranty.
- Check upon receipt that the ttings and refrigeration
circuit caps mounted on hydraulic unit and outdoor
unit are properly seated and secured (cannot be
loosened with bare hands). If this is not the case,
tighten them using a C spanner.
- Check also that the refrigeration connections are
sealed (plastic caps or tubes crimped at the ends
and brazed). If the caps must be removed during
the installation (tubes to be re-cut for example),
put them back as soon as possible.
■Hydraulic connections
The connection must comply with industry standard
practice according to current regulations.
Remember: Seal everything when tting in
accordance with industry standard practice for
plumbing work:
- Use suitable seals (bre gasket, O-ring).
- Use Teon or hemp tape.
- Use sealing paste (synthetic depending on the
case).
Use glycol/water mix if the minimum ow
temperature is set below 10°C. If you are using a
glycol/water mix, arrange for an annual check on the
quality of the glycol. Use monopropylene glycol only.
The recommended concentration is 30% minimum.
Never use monoethylene glycol.
• In some installations, the presence of di󰀨erent
metals can cause corrosion problems; the
formation of metal particles and sludge can
appear in the hydraulic circuit.
• In this case, it is advisable to use a corrosion
inhibitor in the proportions indicated by the
manufacturer.
• You must also ensure that treated water does
not become corrosive.

■Electrical connections
• Before any maintenance operation, ensure
that the general power supply is switched o󰀨.
• Specications of electricity supply
The electrical installation must be carried out in
accordance with prevailing rules.
Electrical connections will only be made once all
other installation operations (fastening, assembly,
etc.) have been completed.
Warning!
The contract signed with the energy provider must
be su󰀩cient not only to cover the heat pump's power
requirements but also the combined sum of all the
appliances likely to be operating at the same time. If
the power is too low, check the power rating stated
in your contract with your energy provider.
Never use a power socket for the power supply.
The heat pump must be supplied directly with power
(without external switch) by special protected leads
from the electric panel via dedicated bipolar circuit
breakers, C curve for the outdoor unit, C curve for
the electrical heating and domestic water backups
(see tables page 35).
The electrical installation must be tted with a 30mA
RCD.
This appliance is designed to operate using a
nominal voltage of 230 V or 400 V, +/- 10%, 50 Hz
(depending on model).
• General remarks on electrical connections
It is essential to maintain neutral-phase polarity
when making electrical connections.
Rigid wires are preferable for xed installations,
particularly in a building.
Tighten the cables using the cable glands to prevent
the feed wires from being accidentally disconnected.
The earth connection and its continuity must be
ensured.
• Cable glands
To ensure the stability of power (Low Voltage) and
sensor (Extra-Low Voltage) cables, it is essential
that the cable glands are tightened according to the
following recommendations:
Size of cable
gland (PE)
(mm)
Diameter of
cable
(mm)
Cable gland
tightening
torque
(check-nut)
(N.m)
Coupling net
tightening
torque
(N.m)
PG7 1 to 5 1.3 1
PG9 1.5 to 6 3.3 2.6
PG16 5 to 12 4.3 2.6
• Connecting to screw terminals
The use of ring, spade or blade terminals or
caps is prohibited.
- Always select wire that complies with current
standards.
- Bare the end of the wire to around 25 mm.
- With round end pliers, form a loop with a diameter
which matches the tightening screws on the
terminal.
- Tighten the terminal screw rmly onto the
loop created. Insu󰀩cient tightening can cause
overheating, leading to breakdown or even re.
Rigid wires Loop
25 mm Lug on
exible wires
prohibited
Screw and special
washer
Terminal
• Connecting to controller boards
- Remove the corresponding connector and make
the connection.
Pre-cabled bundle connector and/or screw connector
• Connecting to spring terminals
- Bare the end of the wire to around 12 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 stays gripped by the cage by pulling on it.
2
1
3

Contents
Packing .................................6
Unpacking and supplies ....................6
Denitions ...............................6
Optional equipment ........................6
Operating Range ..........................6
General characteristics .....................7
Description .............................12
Operating principle .......................14
Installation 16
Installation of refrigeration connections........16 Installation of the outdoor unit ...............18
Installation of the hydraulic unit ..............20
Electrical connections 34
Cable dimensions and protection rating .......35
Electrical connections on the outdoor unit side ..36
Electrical connections on the hydraulic unit side ..38
Outside sensor ..........................42
Room sensor (optional) ....................42
Description of the equipment 6
Commissioning 44
User Interface ...........................46
Description de l'a󰀩chage ..................47
Installer Menu ...........................48
Navigating the Menus .....................48
Modifying Settings ........................49
Temperature control ......................50
 Refrigeration connections 21
Rules and precautions.....................21
Shaping the refrigeration pipes ..............21
Checks and connection ....................23
Filling the installation with gas...............24
Hydraulic connections 28
Connecting the hydraulic unit to the heating circuit..28
Connecting to the DHW circuit ..............30
Filling and bleeding the installation ...........31
Heating circulation pump speed settings.......32
Controller Interface 46
This appliance must be installed by qualied personnel holding a certicate of competence in the
handling of refrigerants.
- 4 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN

Controller Menu 52
Basic Hydraulic Layout 70
Electrical Cabling Plans 72
Faults in the Hydraulic Unit .................76 Faults in the Outdoor Unit ..................77
Maintenance of the installation 78
Hydraulic checks .........................78
Maintenance of the DHW tank ..............78
Checking the outdoor unit ..................78
Checking the electrical circuit ...............78
 Other maintenance 79
Emptying the hydraulic unit .................79
Distribution valve .........................79
ACI check ..............................79
Quick-start procedure 80
Start-up check-list ........................80 Commissioning technical datasheet ..........82
ErP performance gures 83
Instructions for the end user 83
Menu Structure ..........................52
Installed options .........................53
Hydraulic conguration ....................53
Heat Pump Conguration ..................58
System status ...........................60
Auxiliary functions ........................62
Settings ................................64
Easy Start ..............................68
Fault Diagnosis 76
- 5 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

Description of the equipment
►
Denitions
- Split: The heat pump consists of two elements
(an outdoor unit to be installed outdoors and a hydraulic
unit to be installed inside the dwelling).
- Air/water: The surrounding air is the energy source.
This energy is transmitted to the heating circuit water
by the heat pump.
- Inverter: The fan and compressor speeds are
modulated according to the heating requirements.
This technology enables you to save on energy and
operate on a single-phase power supply, whatever
the heat pump's output, by avoiding pulling signicant
amounts of current at start-up.
- COP (Coe󰀩cient of Performance): This is the
relationship between the energy transmitted to the
heating circuit and consumed electrical energy.
►
Packing
• 1 package : Outdoor unit.
• 1 package : Hydraulic unit and outside temperature
sensor.
►
Unpacking and supplies
While the courier is still present, carefully check the
general appearance of the appliances and check
that the outdoor unit has not been laid in a horizontal
position.
In the event of a dispute, send any relevant reservations
to the carrier in writing within 48 hours and send a copy
of the letter to Customer Services.
- 6 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN
Packing contents list
Heat Pump Outdoor unit Hydraulic unit
Model Code Reference Code Reference Code
Alféa Excellia HP Duo A.I. 16 526661 WOYG160LJL 700223 Alféa
Excellia HP Duo A.I. 024145
Alféa Excellia HP Duo A.I. TRI 15 526662 WOYK150LJL 700224 Alféa
Excellia HP Duo A.I. TRI 024147
Alféa Excellia HP Duo A.I. TRI 17 526663 WOYK170LJL 700225
►
Operating Range
This heat pump provides:
- Heating in winter,
- The management of electrical backups, for extra
heating on the coldest days,
or
- Installation with boiler connection* for extra heating on
the coldest days,
- Management of two heating circuits*,
- Production of domestic hot water.
- Cooling in summer* (for underoor heating-cooling
system or fan-convectors).
*: These options require the use of additional kits
(see chapter "Required accessory" or "Optional equipment").
►
Optional equipment
-Dual circuit kit (code 500098)
for connecting 2 heating circuits.
• Boiler connection kit (code 072887)
for connecting a boiler to the heat pump.
• Wireless room sensor A59 (code 074208)
for correcting the ambient temperature.
• Wireless room sensor A75 (code 074213),
Wireless room sensor A78 (code 074214)
for correcting the ambient temperature and
programming the heat pump.
-Cooling kit (code 075328).
-High ow rate circulation pump kit (code 074077)
for the installation of 1 underoor heating circuit.
• Anti-vibration blocks (code 523574).
• High oor support (code 72889) or
Black rubber oor support (code 809536).
• Heating cable (code 809644).
• Condensate drain pan (code 72888).

►
General characteristics
Model name Alféa Excellia HP Duo A.I. 16 TRI 15 TRI 17
Rated heating performances (outdoor temp. / ow temp.)
Heat output
+7°C / +35°C - Underoor heating system kW 16.00 15.00 17.00
-7°C / +35°C - Underoor heating system kW 14.50 13.20 15.00
+7°C / +55°C - Radiator kW 14.50 13.20 15.00
-7°C / +55°C - Radiator kW 10.90 13.20 14.20
Power consumption
+7°C / +35°C - Underoor heating system kW 3.85 3.46 4.10
-7°C / +35°C - Underoor heating system kW 5.37 4.55 5.32
+7°C / +55°C - Radiator kW 5.57 4.77 5.49
-7°C / +55°C - Radiator kW 5.89 6.77 7.40
Coe󰀩cient of performance (COP) (+7°C/+35°C) 4.15 4.33 4.15
Electrical specications
Electrical voltage (50 HZ) V230 400 400
Maximum current for appliance A28 14 14
Nominal current A17.2 6.43 7.4
Maximum current of the Heating system electrical backup A26.1 39 39
Power of the Heating system electrical backup kW 6 kW
(monophasé)
9 kW
(triphasé)
9 kW
(triphasé)
Circulation pump actual power consumption W39.5 39.5 39.5
Maximum power consumed by the outdoor unit W6300 6770 7400
DHW electrical backup power W1500
Hydraulic Circuit
Maximum operating pressure heating / hot water tank MPa (bar) 0.3 (3) / 1 (10)
Available heating pressure at nominal point +7°C / +55°C (Δt8) MPa (bar) 0.05 (0.5) 0.055 (0.55) 0.045 (0.45)
Minimum allowed hydraulic ow rate l/h 600 600 600
Miscellaneous
Weight of outdoor unit Kg 137 138 138
Noise level at 5 m 1 (Outdoor unit) dB (A) 45 45 45
Sound power level in accordance with EN 12102 2 (Outdoor unit) dB (A) 67 67 67
Weight of hydraulic unit (empty / full of water) Kg 152 / 370 152 / 370 152 / 370
Water capacity of the hydraulic unit / hot water tank l24 / 190 24 / 190 24 / 190
Noise level at 1 m 1(Hydraulic unit) dB (A) 37 37 37
Sound power level in accordance with EN 12102 2(Hydraulic unit) dB (A) 45 45 45
Heating system operating limits
Outdoor temperature min/max °C -25 / +35 -25 / +35 -25 / +35
Max. heating water ow temperature underoor heating °C 45 45 45
Max. heating water ow temperature low temperature radiator °C 60 60 60
Refrigeration circuit
Gas pipe diameters Inches 5/8 5/8 5/8
Liquid Piping Diameters Inches 3/8 3/8 3/8
Factory ll of refrigerant R410A 3g 3800 3800 3800
Maximum operating pressure MPa (bar) 4.15 (41.5) 4.15 (41.5) 4.15 (41.5)
Minimum / Maximum length of pipes 4 / 6 m 5 / 15 5 / 15 5 / 15
Maximum length of pipes 5m 30 30 30
Maximum level di󰀨erence
(Outdoor unit over hydraulic unit and heating only / Other cases) m 25 / 15 25 / 15 25 / 15
1Sound pressure level at (x) m from the appliance, 1.5m off the ground, open eld
directionality 2.
2The sound power level is a laboratory measurement of the emitted sound power. It
does not correspond to a measurement of the perceived sound power.
3Refrigerant R410A as per NF EN 378.1 standard.
4Filling with refrigerant R410A is done at the factory.
5 Taking into account a possible additional ll of refrigerant R410A (see "Additional
lling", page 26)..
6The announced thermal and acoustic performances are measured with 7.5m length
refrigerant lines.
- 7 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

Ø22.2
196 196
688
1080
40
39.3 480 12.1
23.6
1428
515.5
37.7
Ø50
Ø34.5
g. 1 - Dimensions of outdoor units (in mm)
■Alféa Excellia HP Duo A.I. 16
■Alféa Excellia HP Duo A.I. TRI 15
Alféa Excellia HP Duo A.I. TRI 17
- 8 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN

175 210
47
1296
648
1141
1190
297 55
244
1841
1851
678
684
71
55
507
144
608 115
1679 1611
g. 2 - Dimensions of hydraulic unit (in mm)
Space requirements of the hydraulic unit, see g. 15, page 20.
g. 3 - Accessories provided with the outdoor unit g. 4 - Accessories provided with the hydraulic unit
1*
3**
2*
4
1 Elbow
for condensate evacuation.
2
Plugs (x9)
(depending on
model)
1Dielectric
connections for connections to the DHW
circuit2 DHW pipes
3 Gaskets
4Outside sensor to monitor the outside
temperature
10 Insulation tube to insulate connections and
tubes
Back view
Heating ow
ECS
EFS
Heating return
Side view Front view
■Hydraulic unit
6
4
10
9
5
3
2
8
1
7
- 9 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

0
1
2
3
4
5
6
7
8
mCE
1 mbar=10 mmCE=100 Pa
m/h
3
11,5 20,50
0 0,5 1 1,5 2 m3/h
1
3
55
77
88
g. 5 - Available hydraulic pressures and ow rates
-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
Outside sensor QAC34 HP return sensor
HP ow sensor
g. 6 - Ohmic sensor values (Hydraulic unit)
Variable pressure Constant pressure
0
1
2
3
4
5
6
7
8
mCE
1 mbar=10 mmCE=100 Pa
m/h
3
11,5 20,50
0 0,5 1 1,5 2 m3/h
1
3
55
77
88
- 10 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN

g. 7 - Ohmic sensor values (Outdoor unit)
-20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130
10000
1000
100
10
1
- Compressor
- Discharge
- Condensation
- Expansion valve
- Evaporator inlet
- Outdoor unit
Temperature °C
Ohmic value (kΩ)
- 11 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

►
Description
g. 8 - Outdoor unit components
■Alféa Excellia HP Duo A.I. 16
■Alféa Excellia HP Duo A.I. TRI 15
Alféa Excellia HP Duo A.I. TRI 17
Key:
1. High performance and low noise impeller.
2. Electrical motor with variable "Inverter" operation.
3. "Inverter" control unit.
4. Check lights and buttons.
5. Connection terminal blocks
(power supply and interconnection).
6. Refrigerant storage bottle.
7. 4-way valve.
8. Anti-corrosion treated bodywork.
9. Main circuit electronic expansion valve.
10. Noise and thermally insulated "Inverter" compressor with liquid injection port.
11. Refrigeration connection valves (ared connectors) with protective caps.
12. Holding tank with condensate drain hole.
13. High-performance exchange surface evaporator; anti-corrosion treated hydrophilic aluminium ns and
grooved copper tubes.
14. Solenoid valve for liquid injection.
1
8
2
1
2
12
13
3
4
14
6
7
5
11
9
10
- 12 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN

g. 9 - Hydraulic unit components
Key :
1 - Electric control box.
2 - Controller / User interface.
3 - Start/stop switch.
4 - Hydraulic unit circulation pump.
5 - Distribution valve.
6 - "Gas" refrigeration connection.
7 - "Liquid" refrigeration connection.
8 - Condensation sensor.
9 - Drain valve.
10 - Safety valve.
11 - Safety thermostat.
12 - Pressure gauge.
13 - Automatic bleeder valve.
14 - Expansion vessel.
15 - Condenser.
16 - HP electrical backup.
17 - DHW electrical backup.
18 - Flowmeter
19 - Manual bleeder valve.
Sensors:
21 - HP return sensor.
22 - DHW sensor.
23 - HP ow sensor.
3
12
1
10
4
21
9
8
18
23
14
5
17
22
16
11
9
9
215
13
6 7
19
■Hydraulic unit
- 13 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

►
Operating principle
The heat pump transmits the energy contained in the
surrounding air into the dwelling to be heated.
The heat pump consists of four main elements, in which
a refrigerant (R410A) circulates.
- In the evaporator (ref. 13, g. 8, page 12) :
The calories are taken from the outside air and
transmitted to the refrigerant. Because it has a low
boiling point, it changes from a liquid to a vapour, even
in cold weather (down to -25°C outside temperature).
- In the compressor (ref. 10, g. 8, page 12) :
The vaporised refrigerant is pressurised and takes on
even more calories.
- In the condenser (ref. 14, g. 9) :
The energy of the refrigerant is transmitted to the
heating circuit. The refrigerant returns to its liquid state.
- In the expansion valve (ref. 9, g. 8, page 12) :
The liqueed refrigerant is returned to a low pressure
and regains its initial temperature and pressure.
The heat pump is equipped with a controller which
controls the room temperature based on the outdoor
temperature measurement. The room thermostat
(option) provides a corrective action for the temperature
control.
The hydraulic unit can be optionally tted with an
electrical backup or boiler connection which intervenes
to provide additional heat during the coldest periods.
• Control functions
- The heating circuit's ow temperature is controlled by
the temperature control.
- Depending on the heating ow temperature,
the outdoor unit's power is modulated by the "Inverter"
compressor.
- Control of the backup electrical heating.
- The daily timer program is used to set the periods
where the ambient temperature is comfortable or
reduced.
- Summer/winter time mode switchover is automatic.
- Management of the boiler backup*.
- Room sensor*: The room sensor provides a corrective
action for the temperature control.
- Control of a second heating circuit*.
- Domestic hot water: Heating timer program.
- Managing cooling*.
* Where the heat pump is tted with options and associated kits.
• Protective functions
- Anti-legionella cycle for domestic hot water.
- Anti-corrosion tank protection with titanium anode
(ACI).
- Frost protection: Frost protection cuts in if the heating
circuit's ow temperature falls below 5°C (provided
that the heat pump's electrical power supply is not
interrupted).
g. 10 - Examples and operating limits
8
7
6
5
4
3
2
1
0
-20 -15 -10 -5 0 510152025
46
Dwelling heat loss (kW)
Outdoor temperature (°C)
Outdoor temperature (°C)
HP power
Max
authorised HP
start-up temp.
Water return temperature (°C)
HP only
Heat Pump
HP +
electrical
backup
Backup
- 14 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN

• Domestic hot water (DHW) operating principle
Two domestic hot water (DHW) temperatures can be
set: comfort and reduced.
The default DHW program is set to the comfort
temperature between 00:00 and 05:00 and between
14:30 and 17:00 and to the reduced temperature for the
rest of the day. This optimises electrical consumption
while ensuring comfortable heating and water
temperatures.
The reduced temperature setpoint may be useful to
avoid restarting the DHW too often and for too long
during the day.
The production of domestic hot water (DHW) is started
when the temperature in the tank drops to 7°C below
the temperature setpoint.
The heat pump produces the domestic hot water, which
is then additionally heated, if required, by the tank's
electrical backup or by the boiler. To ensure a DHW
setpoint over 55°C, the electrical backup heating must
be left on.
Depending on the setting, the comfort temperature can
be reached 24h/day or only at night or following the
DHW program.
g. 11 - Heat pump operating principle
If the contract signed with the energy provider includes
a day/night tari󰀨, the electrical backup is subject to the
supplier’s power tari󰀨 and the comfort temperature may
only be reached at night.
If no particular contract has been signed, the comfort
temperature can be reached at any time, including
during the day.
The production of DHW takes priority over heating;
nevertheless the production of DHW is managed
by cycles that regulate the amount of time assigned
to heating and production of DHW in the event of
simultaneous demand.
Anti-legionella cycles can be programmed.
• Fan convectors with integrated control system
Do not use a room sensor in the area in question.
Ev
Dt
Cn
Cp
1kW
COP 4
4kW
20 °C
PAC
PAC - Heating Pump
Ev - Evaporator
Cp - Compressor
Cn - Condenser
Dt - Expansion Valve
Air energy
Heat produced
Electrical
energy
consumed
- 15 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

Installation
g. 12 - Example of recommendation for layout of
refrigeration connections
►
Installation of refrigeration
connections
Bend the pipes into position and make holes
for them through the oor or walls either with
their protective caps in place or after brazing.
Keep the protective caps in place or ends
brazed until the appliance is commissioned.
The outdoor unit must be connected to the hydraulic unit
only with brand new separately insulated copper
connections (refrigerant quality).
Maintain the same pipe diameters (g. 19, page 22).
Observe the maximum and minimum distances between
the hydraulic unit and the outdoor unit (g. 19, page 22);
the guarantee of performance and the service lifespan
of the system depend on this.
The minimum length of the refrigeration
connections for correct operation is 5 m.
The appliance's warranty will be void if it is operated
with refrigeration connections less than 5 m long
(tolerance +/- 10%).
If the refrigeration connections are exposed to
weathering or UV radiation and the insulation is not
resistant, protection must be provided.
- 16 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN



• Water may ow out of the outdoor unit when it is
operating. Do not install the unit on a paved terrace;
choose a well-drained location (e.g. gravel or sand).
If installation is carried out in an area where the
temperature stays below 0°C for long periods, check
that the presence of ice does not present any danger.
A drainage pipe can also be connected to the outdoor
unit (g. 14, page 19).
• Nothing should obstruct the air circulation through the
evaporator and out from the fan (g. 13).
• Keep the outdoor unit away from heat sources and
ammable products.
• Make sure that the unit does not disturb the
surrounding area or inhabitants (noise level, draught,
low temperature of the ejected air freezing the plants
in its path.
g. 13 - Minimum installation clearances around the outdoor unit (all models)
►
Installation of the outdoor unit
▼
Installation precautions
The outdoor unit must only be installed
outside. If a shelter is required, it must have
broad openings on all 4 sides and installation
clearances must be observed.
• Choose the location of the appliance after discussion
with the client.
• We recommend choosing a site that is sunny but
sheltered from strong cold prevailing winds.
• The unit must be easily accessible for future installation
and maintenance work (g. 13).
• Ensure that connections to the hydraulic unit can be
made easily.
• The outdoor unit is able to withstand bad weather but
avoid installing it in a position where it is likely to be
exposed to signicant dirt or owing water (under a
defective gutter for example).
B
E
G
G
D
BB
A
G
B
B
H
A
B
D
E
G
B
F
J
B
BK
E
F
H
B
B
B
B
H
E
D
H
B
BH
B
BDB
BH
E
A≥ 80 mm
B≥ 100 mm
C≥ 200 mm
D≥ 300 mm
E≥ 500 mm
F≥600 mm
G≥ 1000 mm
H≥ 1500 mm
J≥2000 mm
K≥3000 mm
- 18 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN

• The surface on which the appliance is installed must:
- Be permeable (soil, gravel, etc.).
- Support its weight easily.
- Allow a solid fastening base,
- Not transmit any vibration to the dwelling. Anti-vibratory
blocks are available as an option.
• The wall bracket cannot be used where it is likely to
transmit vibrations. Installing the unit on the ground is
preferred.
▼
Positioning Outdoor Unit
The outdoor unit must be raised at least 50 mm above
ground level. In areas prone to snow, this height should
be increased but should not exceed 1.5 m (g. 14).
- Fasten the outdoor unit by means of screws and
rubber tightening or toothed lock washers to prevent
them from coming loose.
In areas with heavy snowfall, if the intake and
outlet of the outdoor unit is blocked with snow,
heating may become di󰀩cult and a failure is
likely to occur.
Construct a canopy or place the unit on a high stand
(local conguration).
- Place the unit on a solid stand in order to minimise
impacts and vibrations.
- Do not place the unit directly on the ground as this will
cause problems.
▼
Condensate drain pipe
The outdoor unit can generate a large volume
of water (called condensate).
If the use of a drain pipe is necessary:
- Use the elbow provided (C) and connect a 16 mm-
diameter hose for draining the condensate.
- Use the plug(s) provided (B) to block the opening of
the condensate drain pan.
Allow for the condensate to ow away under the force of
gravity (waste water, rain water, gravel bed).
If installation is carried out in an area where the
temperature stays below 0°C for long periods,
equip the drain pipe with trace heating to
avoid it icing up. Trace heating must heat not
only the drain pipe but also the bottom of the
appliance's condensate collection tank.
g. 14 - Installation of the outdoor unit
evacuation of condensates
H
Air
* In areas with heavy snowfall,
(H) must be higher than the average snow layer.
BB
B
C4 holes
(ø 12 mm)
- 19 -
alfea Excellia HP Duo A.I. / Installation / 1945 - EN

g. 15 - Minimum installation clearances around the
hydraulic unit
►
Installation of the hydraulic unit
▼
Installation precautions
• Choose the location of the appliance after discussion
with the client.
• The installation space should comply with current
regulations.
• To facilitate maintenance and allow access to the
various parts, we recommend that you provide su󰀩cient
space all the way around the hydraulic unit (g. 15).
• In accordance with EN 378-1 -2017 standard
(Refrigerating systems and heat pumps - Safety and
environmental requirements), the system's hydraulic
unit and all refrigeration connections passing through
inhabited areas must comply with the minimum room
volume requirements shown hereafter.
The minimum volume of a room (in m3) is calculated
using the formula: "uid ll load" (in kg) / 0.39.
Alternatively, you must ensure that
- The location has natural ventilation through another
room where the combined volume of the two rooms
is greater than "liquid ll load" (in kg) / 0.39 kg/m³.
The opening between the two rooms must have a door
clearance of at least 1 cm.
- Or that the location is mechanically ventilated.
Be careful not to bring ammable gas
near the heat pump during installation,
in particular when brazing is required.
The appliances are not reproof and should
not therefore be installed in an explosive
environment.
- To avoid condensation inside the condenser, remove
the refrigeration circuit caps only when making the
refrigeration connections.
- If the refrigeration connection is only performed at the end
of the installation, make sure that the refrigeration circuit
caps* remain in place and tight throughout the installation.
* (Hydraulic unit side and outdoor unit side).
- After each maintenance operation on the refrigeration
circuit and before the nal connection, take care to put
the caps back in position to avoid any pollution of the
refrigeration circuit (sealing with adhesive is prohibited).
g. 16 - Open the front cover g. 17 - Removing the cover
1000
1841
300
1
2
3
- 20 - alfea Excellia HP Duo A.I. / Installation / 1945 - EN