Atlantic 024122 Installation and operation manual

Installation
and commissioning
instructions
for professionals
to be kept by the user
for future reference
U0611762_1821_EN_3
28/07/2017
Alféa Extensa Duo A.I.
www.atlantic.fr
FR NL DE EN IT
ES PT PL PT PT
Air/water heat pump
split 2 services
Outdoor unit Hydraulic unit
WOYA 060 LFCA 024122
WOYA 080 LFCA 024123
WOYA 100 LFTA

"Installation
and maintenance regulations
The appliance must be installed and maintained by
an approved professional in accordance with current
regulations and codes of practice.
"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 any 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.
Remember: The presence at installation of a CB-
type disconnection function, for preventing heating
water being returned to the drinking water system, is
required by articles 16.7 and 16.8 of the Local Plumbing
Regulations.
"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.
- Please refer to the chapter "Treatment of domestic
and heating water" in our price catalogue.
"You must also ensure that treated water does
not become corrosive.
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 2 -

"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 current regulations.
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 37).
The electrical installation must be tted with a 30mA
RCD.
This appliance is designed to operate using a nominal
voltage of 230 V +/- 10%, 50 Hz.
• 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.
• 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 wire Loop
25 mm Spade
or blade
terminal
on exible
wire
is 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 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
stays gripped by the cage by pulling on it.
2
1
3
Installation and Operating Manual "1821- EN" - 3 -
Alféa Extensa Duo A.I. Heat Pump

Contents
Packing . . . . . . . . . . . . . . . . . . . . . . . .6
Unpacking and supplies . . . . . . . . . . . . . . . . 6
Denitions . . . . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Cable dimensions and protection rating . . . . . . . 37
Electrical connections on the outdoor unit side . . . 38
Electrical connections on the hydraulic unit side . . 39
Outside sensor . . . . . . . . . . . . . . . . . . . 40
Room sensor (option) . . . . . . . . . . . . . . . . 40
Description of the equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 6
This appliance must be installed by qualied personnel holding a certicate of competence in the handling
of refrigerants.
Controller Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
User Interface . . . . . . . . . . . . . . . . . . . . 44
Display Description . . . . . . . . . . . . . . . . . 45
Installer Menu . . . . . . . . . . . . . . . . . . . . 46
Navigating the Menus . . . . . . . . . . . . . . . . 46
Modifying Settings . . . . . . . . . . . . . . . . . . 47
Temperature control . . . . . . . . . . . . . . . . . 48
Refrigeration connections and lling the installation with gas . . . . . . . 21
Rules and precautions. . . . . . . . . . . . . . . . 21
Shaping the refrigeration pipes . . . . . . . . . . . 21
Checks and connection . . . . . . . . . . . . . . . 23
Filling the installation with gas. . . . . . . . . . . . 24
Hydraulic connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Connecting the hydraulic unit to the heating circuit . 30
Connecting to the DHW circuit . . . . . . . . . . . 32
Filling and bleeding the installation . . . . . . . . . 33
Heating circulation pump speed settings . . . . . . 34
Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 4 -

Basic Hydraulic Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Electrical Cabling Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Fault Diagnosis. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Checking the hydraulic circuit . . . . . . . . . . . . 76
Maintenance of the DHW tank. . . . . . . . . . . . 76
Checking the outdoor unit . . . . . . . . . . . . . . 76
Checking the electrical circuit . . . . . . . . . . . . 76
Other maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Emptying the hydraulic unit . . . . . . . . . . . . . 77
Distribution valve . . . . . . . . . . . . . . . . . . 77
ACI check . . . . . . . . . . . . . . . . . . . . . . 77
Start-up procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Start-up check-list . . . . . . . . . . . . . . . . . . 78 Commissioning technical datasheet. . . . . . . . . 80
ErP performance gures. . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Denition of ErP . . . . . . . . . . . . . . . . . . . 82
ERP specication . . . . . . . . . . . . . . . . . . 82
Package datasheet . . . . . . . . . . . . . . . . . 84
Instructions for the end user . . . . . . . . . . . . . . . . . . . . . . . . . 85
Controller Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Menu Structure . . . . . . . . . . . . . . . . . . . 50
Installed options . . . . . . . . . . . . . . . . . . . 51
Hydraulic conguration . . . . . . . . . . . . . . . 51
Heat Pump Conguration . . . . . . . . . . . . . . 56
System status . . . . . . . . . . . . . . . . . . . . 58
Auxiliary functions . . . . . . . . . . . . . . . . . . 60
Settings . . . . . . . . . . . . . . . . . . . . . . . 62
Easy Start . . . . . . . . . . . . . . . . . . . . . . 66
Faults in the Hydraulic Unit . . . . . . . . . . . . . 74 Faults in the outdoor unit . . . . . . . . . . . . . . 75
Maintenance of the installation . . . . . . . . . . . . . . . . . . . . . . . . 76
Installation and Operating Manual "1821- EN" - 5 -
Alféa Extensa Duo A.I. Heat Pump

1.1 Packing
• 1 package: Outdoor unit.
• 1 package: Hydraulic unit and outside temperature
sensor.
1.2 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.
1.3 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.
1 Description of the equipment
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 6 -
Packing contents list
Heat Pump Outdoor unit Hydraulic unit
Model Export code Reference Code Reference Code
Alféa Extensa Duo A.I. 5 526226 WOYA060LFCA 700171 Alféa Extensa Duo A.I. 5 024122
Alféa Extensa Duo A.I. 6 526227
Alféa Extensa Duo A.I. 6-10 024123
Alféa Extensa Duo A.I. 8 526228 WOYA080LFCA 700172
Alféa Extensa Duo A.I. 10 526229 WOYA100LFTA 700173
Optional equipment
• Dual circuit kit (code 074011)
for connecting 2 heating circuits.
• 6 kW backup relay kit (code 075327)
for switching to HP electrical backup of 3 to 6 kW.
• Boiler connection kit (code 073990)
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).
• White PVC oor support (ref. 809532) or
Black rubber oor support (ref. 809536).
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").

1.4 General characteristics
Model name Alféa Extensa Duo A.I. 5 6 8 10
Rated heating performances (outdoor temp. / ow temp.)
Heat output
+7°C/+35°C - Underoor heating system kW 4.50 6.00 7.50 10.00
-7°C/+35°C - Underoor heating system kW 4.10 4.60 5.70 7.40
+7°C/+45°C - LT radiator kW 4.50 5.10 6.20 8.27
-7°C/+45°C - LT radiator kW 4.10 4.45 5.05 7.40
+7°C/+55 °C - Radiator kW 4.50 4.50 5.00 7.00
-7°C/+55°C - Radiator kW 3.70 3.85 5.20 7.00
Power consumption
+7°C/+35°C - Underoor heating system kW 1.00 1.41 1.84 2.49
-7°C/+35°C - Underoor heating system kW 1.47 1.74 2.23 2.97
+7°C/+45°C - LT radiator kW 1.31 1.50 1.87 2.53
-7°C/+45°C - LT radiator kW 1.86 2.04 2.47 3.70
+7°C/+55°C - Radiator kW 1.79 1.79 1.94 2.86
-7°C/+55°C - Radiator kW 2.20 2.33 3.34 4.15
Coe󰀩cient of Performance (COP) (+7°C/+35°C) 4.52 4.26 4.08 4.02
Electrical specications
Electrical voltage (50 Hz) V 230
Maximum current for appliance A11 12.5 17.5 18.5
Nominal current A4.5 6.3 8.1 10.9
Maximum current of the Heating system electrical backup A13.05 / 26.1
Power of the Heating system electrical backup kW 3 (6 kW option available)
Fan actual power consumption W 49 49 49 100
Circulation pump actual power consumption W 24
Maximum power consumed by the outdoor unit W2530 2875 4025 4255
DHW electrical backup power W1500
Rate according to EN14825 0.0100 0.0070 0.0057 0.0044
Hydraulic Circuit
Maximum operating pressure heating / hot water tank MPa (bar) 0.3 (3) / 1 (10)
Flow rate of the hydraulic circuit for 4°C<Δt<8°C
(rated conditions) minimum / maximum l/h 490 / 980 650 / 1300 810 / 1620 1080 / 2160
Miscellaneous
Weight of outdoor unit Kg 41 41 42 60
Weight of hydraulic unit (empty / full of water) Kg 155 / 373
Water capacity of the hydraulic unit / hot water tank l 24 / 190
Noise level at 1 m 1(hydraulic unit) dB (A) 39
Sound power level in accordance with EN 12102 2(hydraulic unit) dB (A) 46
Noise level at 5 m 1(outdoor unit) dB (A) 40 40 47 47
Sound power level in accordance with EN 12102 2(outdoor unit) dB (A) 63 63 69 69
Heating system operating limits
Outdoor temperature min/max °C -20 / +35
Max. heating water ow temperature underoor heating °C 45
Max. heating water ow temperature low temperature radiator °C 52
Refrigeration circuit
Gas pipe diameters Inches 1/2 1/2 5/8 5/8
Liquid Piping Diameters Inches 1/4 1/4 1/4 3/8
Factory ll of refrigerant R410A 3g 1100 1100 1400 1800
Maximum operating pressure MPa (bar) 4.15 (41.5)
Minimum / Maximum length of pipes 4m5 / 15
Maximum length of pipes 5 / Maximum level di󰀨erence m30 / 20
1 Sound pressure level at (x) m from the appliance, 1.5m o󰀨 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.
3 Refrigerant 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 27).
- 7 -
Alféa Extensa Duo A.I. Heat Pump
Installation and Operating Manual "1821- EN"

650
AIR
AIR
370
830
21
196
99
9
900 77
12
33031
147
170
400
540
4 holes Ø11
62
790
290
18 23
209
352
620
320
16
110
175
AIR
AIR
gure 1 - Dimensions in mm
4 holes
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 8 -
"Outdoor Unit,
Alféa Extensa Duo A.I. 5, 6 and 8
"Outdoor Unit,
Alféa Extensa Duo A.I. 10

175 210
47
1296
648
1141
1190
297 55
244
1841
1851
678
684
71
55
507
144
608 115
1679 1611
gure 2 - Dimensions in mm
Space requirements of the hydraulic unit, see gure 15, page 20.
Back view
Heating ow.
DHW
DCW
Heating return.
Side view Front view
"Hydraulic unit
gure 3 - Accessories provided with the outdoor unit gure 4 - Accessories provided with the hydraulic unit
1* 2*
3**
1* Elbow
for condensate evacuation.
2*
Plugs (x2)
(depending on
model)
* only for Alféa Extensa Duo A.I. 10.
1Dielectric connections
for connections to the
DHW circuit
2 DCW pipes
3 Gaskets
4Outside sensor to monitor the outside
temperature
5Adapter 1/2" - 5/8"
and/or 1/4" - 3/8" for ared connections
to the hydraulic unit
(depending on model).
6Nut 1/2" and/or 1/4"
10 Insulation tube to insulate connections
and tubes
64
10
9
5
3
2
8
1
7
Installation and Operating Manual "1821- EN" - 9 -
Alféa Extensa Duo A.I. Heat Pump

gure 5 - Available hydraulic pressures and ow rates
gure 6 - Ohmic sensor values (Hydraulic unit)
-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.
0
1
2
3
4
5
6
7
8
mCE
1 mbar=10 mmCE=100 Pa
m/h
3
11,5 20,50
1
3
55
77
0
1
2
3
4
5
6
7
8
mCE
1 mbar=10 mmCE=100 Pa
m/h
3
11,5 20,50
1
3
55
77
Variable pressure Constant pressure
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 10 -

gure 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
Temperature °C
Ohmic value (kΩ)
Installation and Operating Manual "1821- EN" - 11 -
Alféa Extensa Duo A.I. Heat Pump

1.5 Description
gure 8 - Outdoor unit components
1
234
6
5
8
10
9
1211
7
1
234
6
5
10
9
1211
7
8
1
23
4
6
5
8
10
9
1211
7
Key:
1 - High performance and low noise impeller.
2 - Electrical motor with variable "inverter" operation.
3 - "Inverter" control unit.
4 - Connection terminal blocks
(power supply and interconnection).
5 - Refrigerant storage bottle.
6 - 4-way valve.
7 - Anti-corrosion treated bodywork.
8 - Main circuit electronic expansion valve.
9 - Noise and thermally insulated "inverter" compressor.
10 - Refrigeration connection valves (ared connectors) with
protective caps.
11 - Holding tank with condensate drain hole.
12 - High-performance exchange surface evaporator;
anti-corrosion treated hydrophilic aluminium ns and
grooved copper tubes.
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 12 -
"Alféa Extensa Duo A.I. 5 and
6
"Alféa Extensa Duo A.I. 8
"Alféa Extensa Duo A.I. 10

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.
Sensors:
21 - HP return sensor.
22 - DHW sensor.
23 - HP ow sensor.
gure 9 - Hydraulic unit components
3
12
1
10
4
9
8
21 23
14
5
17
22
16
11
9
9
215
13
6 7
Installation and Operating Manual "1821- EN" - 13 -
Alféa Extensa Duo A.I. Heat Pump

1.6 Operating principle
The heat pump transmits the energy contained in the
surrounding air into the dwelling to be heated and for
production of domestic hot water.
The heat pump consists of four main parts, in which a
refrigerant (R410A) circulates.
- In the evaporator (ref. 12, gure 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 -20°C outside temperature).
- In the compressor (ref. 9, gure 8, page 12):
The vaporised refrigerant is pressurised and takes on
even more calories.
- In the condenser (ref. 15, gure 9):
The energy of the refrigerant is transmitted to the
heating circuit. The refrigerant returns to its liquid state.
- In the expansion valve (ref. 8, gure 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 is 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,
management of the DHW circulation pump.
- 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).
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
gure 10 - Examples and operating limits
Max
authorised HP
start-up temp.
Water return temperature (°C)
HP only
Heat Pump
HP +
electrical
backup
Backup
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 14 -

• 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 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.
gure 11 - Heat pump operating principle
Ev
Dt
Cn
Cp
1kW
COP 4
4kW
20 °C
PAC
PAC - Heating Pump
Ev - Evaporator
Cp - Compressor
Cn - Capacitor
Dt - Expansion Valve
Air energy
Heat produced
Electrical
energy
consumed
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.
Installation and Operating Manual "1821- EN" - 15 -
Alféa Extensa Duo A.I. Heat Pump

2 Installation
2.1 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 (gure 19).
Observe the maximum and minimum distances between
thehydraulicunit and the outdoor unit (gure 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.
gure 12 - Example of recommendation
for layout of refrigeration connections
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 16 -


Installation and Operating Manual "1821- EN" - 17 -
Alféa Extensa Duo A.I. Heat Pump

2.2 Installation of the outdoor unit
2.2.1 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 (gure 13).
• 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 (gure 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 (e.g. under
a broken gutter).
• 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 (gure 14).
• Nothing should obstruct the air circulation through the
evaporator and out from the fan (gure 13).
• Keep the outdoor unit away from heat sources and
ammable products.
gure 13 - Minimum installation clearances around the outdoor unit
600 mm
or more
100 mm
or more
250 mm or more
(Service space)
100 mm
or more
300 mm
or more
600 mm or more
250 mm
or more
250 mm
or more 300 mm
or more
600 mm or more
100 mm
or more
100 mm
or more
300 mm or more
(Service space)
300 mm
or more
"Alféa Extensa Duo A.I. 5, 6 and 8
"Alféa Extensa Duo A.I. 10
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Minimum
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 18 -

• 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).
• 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.
2.2.2 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 (gure 14).
- Fasten the outdoor unit by means of screws and
rubber tightening or toothed lock washers to prevent
them from coming loose.
"Warning
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.
2.2.3 Condensate drain pipe
(see gure 14)
"The outdoor unit can generate a large volume of
water (called condensate).
If the use of a drain pipe is necessary:
- Installthecondensatedrainpan (optional/code074008)
for Alféa Extensa Duo A.I. models 5, 6 and 8 only.
- 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.
gure 14 - Installation of the outdoor unit
evacuation of condensates
Installation and Operating Manual "1821- EN" - 19 -
Alféa Extensa Duo A.I. Heat Pump
H
H
C
* In areas with heavy snowfall,
(H) must be higher than the average snow layer
B
BC
"Only Alféa Extensa Duo A.I. 10

gure 15 - Minimum installation clearances
around the hydraulic unit and
distances away from fuel storage areas
1000
1841
300
2.3 Installation of the hydraulic unit
2.3.1 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 to allow access to the
various components, we recommend that you provide
su󰀩cient space all around the hydraulic unit (gure 15).
• According to EN 378-1 standard (heat pumps: safety
and environmental requirements), the room where
the HP is to be installed shall have a minimum
volume of: machine charge in kg / 0.44kg/m3.
If not, it must be ensured that:
- Either the room is mechanically ventilated,
- Or the room's door remains open while the installer is
working on the HP.
• Be careful not to bring ammable gas near the heat pump
duringinstallation,inparticular 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).
1
2
3
gure 16 - Open the front cover gure 17 - Removing the cover
Installation and Operating Manual "1821- EN"
Alféa Extensa Duo A.I. Heat Pump
- 20 -