auer HRC 70 32 three-phase /3 User manual

Made in
France
Manual ref. : 1898466
Edition no : 22.22
Installation and User manual
HRC70 32 tri /3
High temperature, modulating
Heat Pump
HRC70 32 /3
Ref. 151460
The information contained in this document is non-contractual. Auer reserves the right to modify the technical specifications or characterisitcs of any of their appliances without prior notice.

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL -
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TABLE OF CONTENTS
1  PLEASE READ IMMEDIATELY ....................... 3
1.1 - Important information.......................................................................3
1.2 - Safety advice and instructions........................................................3
1.3 - Symbols used........................................................................................4
1.4 - Delivery terms and conditions........................................................4
1.5 - Storage and transport........................................................................4
1.5.1 - General information ................................................................................................ 4
1.5.2 - Transporting with a forklift truck ........................................................................ 4
2  INTRODUCTION............................................. 5
2.1 - Standard conguration .....................................................................5
2.2 - Operation................................................................................................5
3  INSTALLATION................................................ 7
3.1 - Installing the Heat Pump ..................................................................7
3.1.1 - General.........................................................................................................................7
3.1.2 - Placement....................................................................................................................8
3.1.3 - Noise levels.................................................................................................................8
3.1.4 - Condensates drainage............................................................................................9
3.2 - Hydraulic installation..........................................................................9
3.2.1 - Hydraulic connections on the installation ......................................................9
3.2.2 - Sizing of the Heat Pump circuit.........................................................................10
3.2.3 - Pressure-relief valves.............................................................................................10
3.2.4 - Heat Pump water inlet lter (supplied) ..........................................................10
3.2.4.1 - Backow prevention device...............................................................10
3.2.4.2 - Purging the heating circuit(s)............................................................10
3.2.4.3 - Insulating the piping ............................................................................10
3.2.4.4 - Expansion vessel ....................................................................................10
3.2.4.5 - Frost protection and water treatment............................................10
3.3 - Electrical control connections.......................................................11
3.4 - Connecting to the power supply.................................................12
3.4.1 - Recommendations for connecting the system to the power supply..12
3.4.2 - Connecting the heat Pump to the power supply.......................................12
3.4.3 - HRC70 Heat Pump : 400V three-phase connection........................................ 13
3.4.4 - Electrical protection of the compressors.......................................................14
4  MAINTENANCE AND TROUBLESHOOTING14
4.1 - General information .........................................................................14
4.2 - Maintenance on the hydraulic circuit.........................................14
4.3 - Maintenance on the Heat Pump..................................................15
4.4 - Maintenance of the electrical components .............................15
4.5 - Decommissioning and disposal ...................................................15
4.6 - Compressor start-up faults.............................................................15
5  LIST OF SPARE PARTS .................................. 17
5.1 - HRC70 Heat Pump................................................................................17
5.2 - Electrical boxes...................................................................................18
6  WARRANTY ................................................... 19
6.1 - Limitations of warranty....................................................................19
6.1.1 - General information ..............................................................................................19
6.1.2 - Cases (not limited to) for exclusion from warranty ....................................19
6.1.2.1 - Water from the heating circuit ..........................................................19
6.1.2.2 - Handling....................................................................................................19
6.1.2.3 - Placement.................................................................................................19
6.1.2.4 - Electrical connections ..........................................................................19
6.1.2.5 - Hydraulic connections .........................................................................19
6.1.2.6 - Accessories...............................................................................................19
6.1.2.7 - Maintenance............................................................................................19
APPENDICES...................................................... 20
A1 - Dimensions...........................................................................................20
A2 - Technical specications....................................................................20
A2.1 - General characteristics..........................................................................................20
A2.2 - Performances............................................................................................................21
A3 - EU declaration .....................................................................................21
A4 - Frost protection ..................................................................................21
A5 - Treatment of the water in the heating circuit ..........................22
A5.1 - Preparation of the hydraulic circuit (rinsing).........................................................................22
A5.2 - Filling water..............................................................................................................22
A5.3 - Treatment of the heating circuit........................................................................22
A5.4 - Protection from freezing ......................................................................................23
A6 - HRC70- 32kW Three-phase-Heat Pump
INTERNAL WIRING DIAGRAM.......................................................24
A7 - Product information sheet..............................................................26
A8 - Electricity provider information form.........................................27

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 3
1.1 - Important information
1 - PLEASE READ
IMMEDIATELY
These installation and operating instructions form part of the
appliances which they refer to.
In order for the warranty to be valid, they must be read
before using the appliance.
This manual must be safeguarded and passed on to
successive users for future reference.
It will be considered as evidence in case of litigation.
1.2 - Safety advice and instructions
• The Heat Pump must only be installed outside.
• This appliance should not be used by: children under 8 years old;
anyone with reduced physical, sensory or mental capabilities; or
by anyone who has insucient experience or knowledge of the
appliance; unless they are being supervised by someone who is
responsible for their safety and in possession of the operating
instructions of the appliance.
• Installation of the Heat Pump indoors is strictly prohibited.
• The Heat Pump operates using an air temperature range of -20°C
to 40°C. When the temperature falls below -20°C, the installation
no longer heats using the Heat Pump, but using the back-up.
• It is FORBIDDEN :
- to operate the Heat Pump using air intake containing solvents
or explosive materials.
- to use air intake containing grease, dust, or aerosol particles.
- to connect vented exhaust hoods to the appliance.
• Use of the appliances are FORBIDDEN if the installation is not
lled with water.
• All work must be carried out by a qualied professional with the
appliance switched o.
• This appliance must be installed in accordance
with national electrical installation regulations.
Check that the appliance is equipped with a properly
sized and properly connected grounding cable.
This CE approved unit is in compliance with the following standards:
- Low voltage 2006/95/CEE (standard EN 60.335.1).
- Electromagnetic compatibility 2004/108/CEE (standard EN
55014.1 / EN 55014.2).
• Any work on the refrigerant circuit must be carried out by a qualied
professional with a category 1 certicate of aptitude.The release of
refrigerant uid into the atmosphere is prohibited, the refrigerant
uid must be recovered before any work is undertaken on the
refrigerant circuit.
The high temperature Heat Pump absorbs the calories present in
exterior air, and transforms them into useful energy which is then
transferred to the heating water for your home. AUER cannot be
held responsible for any other usage of the appliance.
The safety advice and instructions present in this document must
be strictly respected.
Before making any connections to the installation, make sure the
appliances are compatible with the installation.
Before switching on the appliance, check that the network voltage
to be applied to the appliance is the same as the one on the rating
plate of the appliance.
Before undertaking any manintenance work, handling, or in the
case of the appliance not functioning or malfunctioning, always
disconnect the appliance from the power supply and seek advice
from a technician or specialist.
AUER cannot be held liable for damages caused by not following
the instructions provided, nor any problems or errors caused from
improper handling, improper installation, or misuse.
The installation and operating instructions are subject to change
without prior notice.
- It is the responsibility of the installer
and of the client to ensure that the
appliance is compatible with the power grid
before connecting the HRC70 Heat Pump (see
the electricity provider information form in the
Appendix)
- The power grid impedance value must be less
than the Heat Pump impedance Zmax value (see §
«Connecting the HRC70 Heat Pump to the power
supply»).
- If the electrical installation standards are not
respected there could be irreversible damages
to the HRC70 Heat Pump which are not covered
by the manufacturer’s warranty.
RECOMMENDATIONS FOR
ELECTRICAL INSTALLATION
- Clean and ush the hydraulic heating
circuit before connecting the appliances
(Heat Pump and Pilot).
- The appliance only works when lled with
water. Never switch the appliance on if it is not
properly lled with water and purged of air.
- The lter valve ensures the protection of
the Heat Pump. An annual inspection of the
condition of the lter must be carried out.
- It is recommended to carry out periodic
inspections for sludge and limescale and to
clean when necessary. The appliance must
always be switched o before any cleaning is
undertaken.
- Always switch o the appliance before working
on any of theWWwelectrical components.
Caution:Thefan may continueturning through
inertia even when the appliance is switched
o. Wait for the fan to stop before working on
the appliance.
- Never get water on the control components or
electrical parts. Always switch o the appliance
before cleaning.
RECOMMENDATIONS FOR
HYDRAULIC INSTALLATION

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL -
4
The HRC70 Heat Pump uses R290 refrigerant fluid. Given the
ammable nature of the uid, any work on the refrigerant circuit
must be done with appropriate materials and by conforming
to all regulations in eect. In case of handling of uid (recovery,
evacuation or relling), the appliance must be switched o. Do not
smoke or light any ame (e.g. lighter, blowtorch) when handling
refrigerant uid. if work must be carried out on the refrigerant
circuit using a ame (blowtorch) the refrigerant circuit must rst be
evacuated and replaced with a nitrogen atmosphere.
1.5 - Storage and transport
Admissible storage and transport temperatures of the appliance
are between -20°C and +60°C.
1.5.1 - General information
The appliances must be stored and transported packaged and
on their wooden pallets, in a vertical position, and completely
empty of water.
1.5.2 - Transporting with a forklift truck
When transporting with a forklift truck, the Heat Pump must be
on its wooden pallet.
When moving the Heat Pump do not lower or raise the unit
suddenly as the Heat Pump can easily lose its equilibrium. The Heat
Pump should be suitably secured to prevent it from tipping.
The Heat Pump is designed to be transported with a pallet jack.
1.4 - Delivery terms and conditions
In general, the material is transported at the
recipient’s own risk.
It is important to verify that all of the
elements have been received and that no
damage has been sustained during transport
upon receipt of the appliance and before
beginning the installation procedures.
Identies important warnings and recommendations.
1.3 - Symbols used
Contains controlled substances, do not dispose of in
the garbage. In case of disposal, please respect the
regulations for the recovery of electrical and electronic
equipment.
Consult the installation manual before all work on the
product: handling, installation, use and maintenance.
Type and refrigerant charge.
PS High: Max high service pressure
PS Low: Max low service pressure
Heating capacity :
nom: nominal
max: maximal
Max current protection (A)
Caution : contains a ammable refrigerant uid.
Please make sure to respect the installation and
handling precautions.

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 5
2.1 - Standard conguration
2 - INTRODUCTION
The ensemble is composed of an exterior unit (Monoblock high
temperature Heat Pump to be installed outdoors exclusively)
and of an interior unit (Pilot, to be installed indoors exclusively)
connected together through a hydraulic connection and a
communication bus.
The air to water Heat Pump, draws calories from the exterior air
and transfers them to the heating water circuit with high energy
eciency.
The Pilot ensures the regulation and hydraulic distribution of the
installation.
The pilot ensures the supply of water ow from the Heat Pump. It
is to be installed between the decoupling tank and the Heat Pump.
The tank ensures the hydraulic decoupling between the the Heat
Pump and the heating circuit(s).
The Pilot is delivered pre-congured for the heating of a radiator
circuit controlled by a room temperature thermostat from the Heat
Pump alone.
In the case of connection to a back-up boiler, it is used to load the
decoupling tank directly.
Note :
The Heat Pump is exclusively designed for heating purposes.
It cannot be used for cooling.
2.2 - Operation
The Heat Pump is a closed and pressurised system in which the
refrigerant serves as the medium for transferring energy.
The evaporator (4) is a cooling exchanger which draws calories
from the air.
The humidity in the air condenses on contact with the cold surface,
and forms condensation (evacuation in (8)).
The condenser (5), a plated ehat exchanger which is hydraulically
linked to the heating installation (7),
via the Pilot, enables to heat the water in the heating circuit, and in
turn enables the heating of the building.
1112 22
3
4
5
6
7
8
Mid-season
only compressor (1)
is used,
the fan(6) operates at
speed 1.
In cold weather
only compressor (2)
is used,
the fan (6) operates at
speed 2.
In extreme cold
both compressors (1) and (2)
are used at the same time,
the fan (6) operates at
speed 3.
1 : Compressor 1
2 : Compressor 2
3 : Expansion valve
4 : Evaporator
5 : Condenser
6 : Fan
7 : Outlet / inlet towards heating
installation
8 : Condensates drainage

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- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 7
3 - INSTALLATION
3.1.1 - General
3.1 - Installing the Heat Pump
The Heat Pump must always be transported in a vertical position,
including during installation. It should be transported with the
help of a pallet jack.
Do not use the hydraulic connections to move the appliance, take
hold of it using the four bottom corners of the appliance.
Installation must be carried out by a qualied installer, taking all
necessary precautions to avoid any risk of accidents or of material
damage.
The Heat Pump must be installed on a hard
and stable base, which is suciently raised
from ground level to avoid risks of damage in case
of ooding or snow.
Always make sure the heat exchanger ns are
protected when handling the appliance.
The Heat Pump must be handled with caution and without being
subjected to impacts, especially when placing on the ground.
•The Heat Pump is designed to be installed
OUTSIDE exclusively.
• Any installation in an ENCLOSED and
UNVENTILATED space is PROHIBITED, unless
there is ventilation which ensure at least 80% of the
nominal ow rate of the Heat Pump.
• DO NOT RESTRICT air intake or ventilation
exhaust. NO OBJECT should impede the ow of air
over the heat exchanger, or the renewal of air. The
Heat Pump should be placed OUT OF THE WAY OF
PREVAILING WINDS.
• DO NOT INSTALL the Heat Pump NEAR SOURCES
OF EXCESSIVE HEAT, COMBUSTIBLE MATERIALS,
OR NEAR VENTILATION POINTS of adjacent
buildings.
• DO NOT INSTALL the Heat Pump NEAR A
KITCHEN OR WORKSHOP exhaust ducts; this
can result in a mixture of oil and air settling onto
the heat exchanger ns which could hamper its
performance.
• DO NOT INSTALL the Heat Pump in an area with
FLAMMABLE GAS, ACIDIC SUBSTANCES, OR
ALKALINES which could cause irreversible damage
to the copper-aluminium heat exchanger.
• AVOID INSTALLING the Heat Pump in a location
subject to NOISE REVERBERATION such as near
windows or near the corners of buildings.
• As the condensates draining trough slopes
downward, the Heat Pump must be installed on a
LEVEL BASE.
• The HEAT PUMP must be EASILY ACCESSIBLE
so as to facilitate access for inspections and
maintenance.

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL -
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3.1.2 - Placement
The Heat Pump is designed to be installed outdoors exclusively,
while respecting a minimum of free space around the appliance in
an area free from excessive levels of dust. It should never be placed
in an enclosed space.
The Heat Pump is designed to operate in rainy weather conditions,
although it can be installed under a well ventilated shelter. (with
an opening large enough to allow sucient air ow for intake and
exhaust).
In regards to the fan, the free space from any obstacles must be at
least 2m.
Minimum distances to respect for proper installation of the Heat
Pump: (mm) :
3.1.3 - Noise levels
The Heat Pump is equipped with a large diameter fan so as to allow
for an appropriate air ow rate. This ow rate can rise up to 9.000
m3/h. The fan speed is adjustable to limit the noise level.
Depending on the installation conditions, the noise levels may be
dierent, in particular if the walls closest to the Heat Pump cause a
reverberation and amplication of noise.
The diagrams below show different installation examples for
dierent placements.

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 9
When the appliance is operating in frost protection mode, the
condensed water must be drained o. In order for the condensates
to drain properly, the drainage trough and hole must be clean and
free of all debris (leaves, grass, etc...).
If the condensates drainage pipe is connected to the rainwater run-
o system, it is advised to use a siphon.
Do not use any tools to remove ice (risk of damage to the heat
exchanger).
The Heat Pump is delivered with a flexible and transparent
condensates drainage pipe (Ø20/25mm) which does not drain
outdoors.
Before activation of the appliance, it is mandatory to connect this
exible pipe to one of the two holes provided for this purpose:
- Remove the back panel of the appliance.
- Position the exible hose in its chosen place after having
drilled a hole in the grommet.
a - Draining from underneath the Heat Pump
This solution is recommended to minimise the risk of ice at the
condensates drainage point.
b - Draining from the back of the Heat Pump
Is an acceptable solution but in this case an external heater
cable (Ref. 751004) needs to be connected. Please refer to §
«Heater cable for external condensates drainage» as well as the
instructions provided with the heater cable itself.
View from above
showing the position of the opening in the concrete base (case a)
3.1.4 - Condensates drainage
3.2 - Hydraulic installation
3.2.1 - Hydraulic connections on the installation
In order to ensure that uids can circulate properly, it is advisable to
check that the sizing of piping in the circuit is appropriate between
the Heat Pump and the Pilot.
The HRC70 32 Heat Pump is intended for with a large variety of
heating installations due to its power level.
The circulator(s) supplying the heating circuit(s) are not delivered
with the hydraulic pilot. It is necessary to properly size and select
the appropriate circulator(s) for each installation.
The hydraulic pilot ensures the circulation of water in the Heat Pump.
It must be installed between the Heat Pump and the decoupling
bottle according to the connection diagrams in the hydraulic pilot
manual.
It is MANDATORY to read the additional
document concerning the quality of
water used for lling the installation.This
document is included with this manual as well
as in the packet with the warranty information.
This document also contains information which
is PERTINENT to the WARRANTY of the material.
Condensates recovery
trough
Grommet membrane (case b)
Plastic cap (case a)
Opening in base of concrete slab (cas a)
Back of the heat pump
Front of the heat pump

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL -
10
3.2.3 - Pressure-relief valves
The Heat Pump and the Pilot are both equipped with pressure-
relief valves.
The pressure-relief valve on the Heat Pump sets the maximum
acceptable pressure in the installation (2.5 bars when hot). The
maximum service pressure on the Heat Pump must, consequently
be lower than 2.5 bars.
Example : If the Heat Pump is positioned 5m below the Pilot, the
pressure reading on the Pilot would be 0.5 bars less than
the real pressure of the water in the Heat Pump. In this case,
the maximum service pressure for the Pilot would be 2 bars.
Therefore it would be advisable to ll the heating circuit at
an intermediary pressure (between 1 and 1.5 bars).
In case of operating with a back-up boiler, these pressure-relief
valves MUST be installed in addition to the ones which the boiler
is already equipped with (set at 3 bars).
The connections and the evacuation conduits for the pressure-relief
valves must be made from materials which are resistant to high
temperatures and corrosion.
3.2.4.1 - Backow prevention device
French law (articles 16.7 and 16.8 of the ‘‘Règlement Sanitaire
Départemental’’) stipulates that a type CB backow prevention
device must be installed. This device must be at dierent, non-
regulated pressure zones, in accordance with the NF P 43-011
standard. This is also an obligatory requirement in other countries,
which makes it important to verify the current laws and standards in
eect in the country of installation and ensure that your installation
is in compliance with them. The backow prevention device is
designed to prevent incoming heating water from entering the
drinking water circuit. It must be connected to the mains drainage
system.
3.2.4 - Heat Pump water inlet lter (supplied)
A 1’’1/4 lter must be installed on the water inlet piping on the Heat
Pump:
• Respect the direction of ow on the lter (arrow on the
valve)
• Clean the lter at least once per year.
Before making any hydraulic connections to
the Heat Pump, it is necessary to desludge
and rinse the installation.
Clean the lter several times as soon as the Heat
Pump circulator pump has been activated (make
sure to switch o the Heat Pump circulator pump
before cleaning).
3.2.4.2 - Purging the heating circuit(s)
All necessary measures must be taken to ensure that the installation
can be continuously degassed. Automatic air purging valves should
be placed at each high point of the installation, and manual air
purging valves should be installed on each radiator.
3.2.4.3 - Insulating the piping
Insulants must conform to the DTU 67.1 standard, or the current
regulations in eect in the country of installation.
All visible piping and accessories (circulator pump, expansion vessel,
valves, etc...) must be either insulated or placed in insulated sleeves.
Remember to insulate the distribution manifolds and the inlet and
outlet ow pipes to the underoor heating circuit.
Remember to insulate the piping which connects the Heat Pump
to the Pilot.
3.2.4.4 - Expansion vessel
An expansion vessel needs to be installed onto the heating circuit.
See Appendix A4 for information on proper sizing of the expansion
vessel.
3.2.4.5 - Frost protection and water treatment
See the recommendation in Annexes A3 and A5.
Heat Pump model 32kW
Minimum nominal ow rate 3750 L/h
Maximum pressure 2.5 bars
Minimum Ø of piping
if distance* between HP and pilot < 15m 36 mm / 38 mm
If distance* between HP and pilot < 25m 42 mm / 44 mm
If distance* between HP and pilot < 50m 46 mm / 48 mm
* distance consists of both inlet and outlet (don’t multiply per two)
3.2.2 - Sizing of the Heat Pump circuit
A sucient ow rate must be ensured so that the dierence in
temperature between the outlet and inlet of the Heat Pump is not
more than 8°C with a single compressor in operation (avec un seul
compresseur en fonctionnement (take a temperature measure
when the HRC70 Heat Pump is in heating mode and the system is
fully functioning) :
The hydraulic connection section between the Heat Pump and the
Pilot must be sucient.
Using the table on the following page, determine the minimum
inner diameter of the connection of piping needed depending on
the distance* which separates the Heat Pump and the Pilot:

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 11
3.3 - Electrical control connections
The Heat Pump is pre-equipped with a non-polarised, 2-core sheathed cable (communication bus). This 10m cable is supplied with, and
already connected to, the Heat Pump. It must be connected to the Pilot.
If the connection needed is longer than 10m replace this cable with a 20m cable which is available to order (Ref.753102).
• Cut the bus link to the right length : LOOPS ARE FORBIDDEN.
ItisMANDATORY toconnect theshielding
of the connection cable on the terminal
block «GND».

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL -
12
The rules and regulations in the country of
installation MUST be respected (standard
C15-100).
• The electrical lines for general power supply to the
circuits must be made in compliance with your
country’s current rules and regulations (standard
C15-100).
• Standard C15-100 determines the cable section to
be used based on acceptable currents.
• Standard C15-100 determines the cable section to
be used based on the following elements :
- Nature of the conductor :
. type of insulation, number of strands, etc...
- Installation mode :
. inuence of conductor and cable groups
. ambient temperature
. tightly or non-tightly installed
. length of cables, etc...
• During transport, the electrical connections
may be subject to accidental loosening.
• To eliminate any risk of abnormal heating, it is
necessary to ensure the placement of the faston
type electrical connections are secure and tighten
the screw connections.
See § «Spare parts - electrical boxes»
3.4 - Connecting to the power supply
Ensure that the power supply is sucient to supply both the Heat
Pump and the electrical back-up if necessary, taking into account
any other domestic usage of electricity.
Connection to the power supply for each appliance must be done
by a qualied professional with the mains power switched o.
Each appliance is delivered from the factory completely pre-
wired. However, it is necessary to connect the following elements
to the relevant terminals:
• The electrical supply of the power circuit for each appliance
separately : the Heat Pump.
• The 2-core sheathed connecting cable (10m length supplied)
between the Heat Pump and the Pilot.
Under no circumstances will the manufacturer be held liable
for any problems which may arise due to improper installation,
choice of power supply cable, or measures used for installation.
Terminal strips
Ther terminal strips are spring-loaded «Cage Clamps».
For handling, use the following :
- for2,5mm² control terminals or 4mm² -
6mm² power terminals (tetra), use a 3,5 x
0,5mm at-head screwdriver.
- for 10mm² mains power terminals
(single-phase), use a 5,5 x 0,8mm at-
head screwdriver.
1 : Insert the screwdriver into the ap just above or
below the identication number.
2 : Insert the wire into the «CAGE CLAMP» when
the ap is open.
3 : Remove the screwdriver.
p
Note:
The wires must be stripped to the following lengths :
- for the 2,5mm² control terminals: between 10 and 12mm
- for the mains power terminal between 18 and 20mm
3.4.1 - Recommendations for connecting the
system to the power supply
Check :
• The power consumption
• Number and thickness of the power supply
cables
• Fuse or circuit breaker ratings
The power supply must come from an electrical protection and
sectioning device which complies with all current rules and
regulation in eect in the country of use.
This CE-approved unit complies with all the essential requirements
of the following directives:
- Low voltage n°2006/95/CE
- Electromagnetic compatibility n° 2004/108/CE
Ensure that the installation is equipped with a properly sized and
connected grounding cable.
Ensure that the voltage and frequency of the general power supply
ts requirements.
The acceptable variation in voltage is:
230 V -10% to +6%50Hz for single-phase+ Ground models
400 V -10% to +6%50Hz for three-phase+ Neutral + Ground models
3.4.2 - Connecting the heat Pump to the power
supply
- It is the responsibility of the installer and of the
clientto ensurethat theappliance iscompatible
with the power grid before connecting the
HRC70 Heat Pump (see the electricity provider
information form in the Appendix)
- The power grid impedence value must be less
than the Heat Pump impedance Zmax value
(see § «Connecting the HRC70 Heat Pump to the
power supply»).
- If the electrical installation standards are not
respected there could be irreversible damages
to the HRC70 Heat Pump which are not covered
by the manufacturer’s warranty.
ELECTRICAL INSTALLATION
RECOMMENDATIONS
The HRC70 Heat Pump is CE-marked. It is compliant with French
standard NF C15-100 as well as European standards EN 61000-3-3
and EN 61000-3-11, among others.
It is equipped with a progressive start-up, which limits the current
at start-up to 60Ain three-phase.
The power supply cable should be sized carefully according to the
following factors:
- Maximum current required
- Distance between the HRC70 Heat Pump and the power
supply
- overall protection
- The neutral operating system

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 13
Make sure to strip the cable before placing it into the
terminals, and make sure that the copper is in good
condition.
A method of disconnection must always be installed in compliance
with the installation rules.
If the power supply cable is damaged, it must be replaced by a
qualied professional to avoid any risk of danger.
To access the terminals: remove the panel on the bottom left-hand
side (2 screws) and open the electrical box (8 screws).
The electrical power supply cable should rst be inserted through
an exterior compression gland and then through a cable grommet
on the electrical box.
3.4.3 - HRC70 Heat Pump:
400V three-phase connection
• Three-phase monitor relay for 32kW HRC70 Heat
Pump.
A phase monitor relay is installed to prevent phase failure, which
could damage the compressors. If the phases are reversed, it will
stop the power supply to the Heat Pump.
If the phase order is reversed, or there is a phase missing, the relay
cuts the power supply to the circuit board. A «BUS Err» error message
will appear. This is indicated on the phase monitor relay by the
orange light at the top being o and the green light at the bottom
being on. To correct the error, reverse the two phases on the mains
power terminal.
When the Pilot is switched on, a «BUS Err» error message will be
displayed. Reverse the two phases on the three-phase power cable
of the Heat Pump. Switch the power back on and check the voltage
on each phase.
In the case of INCORRECT WIRING :
Caution: never work with live voltage!
CORRECT WIRING
orange and
green LEDs on
INCORRECT WIRING
only green
LED on
Thermal-magnetic
circuit breaker or fuse
NeutralGround
Neutral
Ground
3-wire section to be dened
See § Recommendations for connecting
the systemto the power supply.
HRC70 Heat Pump model HRC70 32
three-phase
Power supply voltage 400 V three-phase
Maximum power consumption 14.5 kVA
Maximum current requirements 23 A
Maximum current at start-up 42 A
Presence of a progressive starter for th compressor YES
Phi tangent at Heat Pump start up 1,66
Heat Pump (Zmax) impedance (ohm) -
Phase impedance (Zmax) (ohm) 0,269
Neutral impedance (Zmax) (ohm) 0,176
Heat Pump regulation mode Fixed speed
Number of power stages 3
Circuit breaker dimensions 32 A three-phase
Power supply by phase (2) 6 mm² mini
Number of conductors (2) 4 x 6mm² + T(*)
(1) D-curve tetra-polar general circuit breaker.
(2) The gures given here are for informational purposes only. They must be checked an
modied if necessary, according to conditions of installation and the current rules and
regulations in eect.
If the length of the cable exceeds 15m, or if the network is susceptible to a drop in voltage
of more than 10V, use a thicker cable.
(*) The width of the ground cable must be equal to the thickest power supply cable.
Power supply cable
Cable gland

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3.4.4 - Electrical protection of the compressors
The HRC70 Heat Pump is equipped with progressive starters to limit
the intensity of the current when the motor starts-up, in compliance
with the limits set by the NF C 15 100 standard, which is: 60A per
phase in three-phase.
The electrical protection devices for
the compressors constantly monitor
the current and voltage. In case of over-
voltage, under-voltage, or an abnormally
high current, the compressor is stopped.
• Progressive starter for the 32kW three-phase HRC70
Heat pump.
The progressive start-up device also serves to
control the phases (phase order or missing phase,
which could damage the compressor).
If the order of phases is inversed or if there is a
missing phase, the relay cuts the power supply
supply to the compressor. This error is indicated
by by the LED light ashing every second.
The progressive start-up device controls the
power supply voltage. If the voltage is under 195V,
the compressor is stopped or does not start-up.
This error is indicated by the LED light ashing
rapidly (10 ashes per second).
In case of a compressor error (over-current, short circuit, or error on
the start-up device itself) the error is indicated by an intermittent
ashing of the LED (light on for 5 seconds, and then o for 5
seconds).
4 - MAINTENANCE AND
TROUBLESHOOTING
• In order to ensure the best performance
results from your HRC70 Heat Pump it
should be subject to regular maintenance.
• An annual maintenance check is recommended
to be carried out by a qualied professional on
the hydraulic heating circuit.
• All work carried out on the refrigerant circuit
must be done by a qualied professional with a
category 1 certicate of aptitude.
• Always switch the appliance o before opening it.
4.1 - General information
4.2 - Maintenance on the hydraulic
circuit
After the appliance has been operating for a few days, it is advised to
check that the water circuit is properly sealed, and that condensates
are draining properly.
Note : In case of maintenance work or decommissioning of an
appliance, please respect all environmental protection
instructions concerning recovery, recycling, and disposal
of consumables and components.
Inspection of the water circuit consists of removing sludge, checking
the lters, and stopping up any leaks that may have appeared. Clean
or replace clogged or dirty lters.
From time to time check that the condensates are draining properly:
- Remove the back panel
- Check the drainage hole for blockages
- Clean the condensates recovery trough as deposits from air intake
may accumulate there
- Clean the exible drainage hose:
Case a : drainage from underneath
Case b : drainage from the back
Check that the pressure-relief valve is properly sealed. It should not
leak if the water pressure is under 2.5 bars.
Condensates recovery trough
Grommet membrane (case b)
Plastic cap (case a)
Opening in base of concrete slab (cas a)
Pressure relief valve

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The HRC70 Heat Pump contains R290 refrigerant uid. It is not subject to regulations concerning greenhouse gasses, and does not necessitate
mandatory annual maintenance by a qualied professional.
However, it is still recommended to carry out periodic (at least once per year) cleaning of the evaporator ns if it is obstructed by dust or leaves
: this should be done using a vacuum cleaner or by spraying with water.
Never clean the nned heat exchanger with high-pressure cleaning equipment as it could
damage the ns.
• Always disconnect the appliance from the power supply before accessing the electrical terminals.
• Do not get water on any of the electrical components.
In case of repair work on the HRC70 Heat Pump, the refrigerant circuit, or the electrical box, it is important to follow the following instructions:
Any work on the refrigerant circuit must be undertaken by a qualied professional with a category 1 certicate of aptitude. 1. It is forbidden
to release gas from the refrigerant circuit into the atmosphere, and it is obligatory to recover the refrigerant before undertaking any work on
the circuit.
The HRC70 Heat Pump uses R290 refrigerant uid. Given the ammable nature of this uid, any work on the refrigerant circuit must be carried
out using suitable equipment which complies with the current rules and regulations in eect.
When handling the uid (recovery, draining, or relling), the appliance must be disconnected from the power supply. Do not smoke. Do not
generate any ame (lighter, blowtorch) while handing the uid. If work is necessary on the refrigerant circuit using a ame (blowtorch), the
refrigerant circuit must be emptied and replaced with nitrogen.
4.3 - Maintenance on the Heat Pump
4.4 - Maintenance of the electrical components
• Check on both the HRC70 Heat Pump and the HRC70 Pilot that the electrical supply cables are properly connected to the terminals.
• Check the electrical connections for oxidization or overheated sections.
• Check the tightness of the cables on the compressor starters.
• Clean any dust from the electrical box and check the connections.
• Check that the ground cable is properly connected.
4.5 - Decommissioning and disposal
In accordance with current laws, no equipment must be disposed of without refrigerant gas, recyclable metallic parts, and the oil contained
in the compressors having been recovered beforehand.
4.6 - Compressor start-up faults
Three-phase starter for the HRC70 32kW three-phase Heat Pump
Alert signal Possible causes Solutions
Flashing
2 ashes • Phases are reversed • Reverse the two phases on the power supply of the starter
Flashing
3 ashes
• Power supply voltage is outside of authorised range of
operation
• Check the voltage on the three-phased network.
• Check the compliance of the power supply from the general
counter to the Heat Pump.
• Contact your electricity provider to ensure proper sizing of
the electrical network.
Flashing
4 ashes • Non-compliant power supply frequency • Contact an AUER approved technical centre. • Contact your electricity provider.
Flashing
5 ashes • Compressor blocked • Contact an AUER approved technical centre.
Flashing
6 ashes • Start-up process incomplete • Check the power supply to the Heat Pump before and
during start-up.
It must not be lower than 350 volts.
Flashing
7 ashes • Starter overheating • Contact an AUER approved technical centre.
Flashing
8 ashes • Over-voltage at start-up • Contact an AUER approved technical centre.
Flashing
9 ashes • Imbalance of phases
• Check the voltage on the three-phased network.
• Check the compliance of the power supply from the general
counter to the Heat Pump.
• Contact your electricity provider.

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5 - LIST OF SPARE PARTS
5.1 - HRC70 Heat Pump
Rep Reference Description
1 B4994714 COMPRESSOR KIT CP1
2 B4994715 COMPRESSOR KIT CP2
3 B4994998 PLATED HEAT EXCHANGER
5 B1472833 DEHUMIDIFYING FILTER
7 B4994738 4-WAY VALVE KIT
8 B4994739 PRESSURE REDUCER KIT HRC
11 B1239192 VAPOUR INJECTION VALVE
12 B1239211 HIGH PRESSURE SWITCH
PS 80-450-363
14 B1244578 Temperature sensor lg 2000mm
15 B1244578 Temperature sensor lg 2000mm
17 B1244522 Exterior air temperature sensor
18 B1244578 Temperature sensor lg 2000mm
19 B1244578 Temperature sensor lg 2000mm
22-a* B4994997 Fan kit
22-b* B4994718 Fan kit
23 B1239128 Pressure-relief valve set at 2.5
bars
24 B4948083 Condensates drainage pipe
28 B4994999 Liquid reservoir
29 B1239225 Low pressure gauge
30 B1243964 Fan heater cable
B1593717 Complete pressure gauge cable
31 B1239268 High pressure gauge
* See § «HRC70- 32kW Three-phase-Heat Pump INTERNAL WIRING DIAGRAM»
Nota : Availability of spare parts:
The spare parts equipping our products are kept available for 10
years, from the date of discontinuation of mass production, except
for events beyond our control.
31

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18
5.2 - Electrical boxes
Rep Reference Description
1 B4994719 Heat pump C9+ Circuit board
replacement kit
9 B1244037 Three-phase starter
11 B1243147 4A Fuse 5x20
13 B1943752 Three-phase starter controller
Reference on electrical wiring diagram
Screw-in electrical connections
RCP Phase relay controller
KMC1 Compressor 1 contactor
KMC2 Compressor 2 contactor
BUS 2-core sheathed cable
Electrical
connections
using Faston
terminals
K1 Compressor 1
K2 Compressor 2

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL - 19
6 - WARRANTY
The warranty covers the HRC70 Heat Pump and the HRC70
Pilot components for a period of two (2) years, starting from the
date the appliance was activated, if the warranty form was sent
back to the manufacturer. In the absence of this document, the
date of manufacture will be used to determine the start date
of the warranty.
If the appliance was installed by an AUER-approved technical
center, you will be entitled to an additional year on your
warranty. A comprehensive warranty will apply for the rst
year (parts, labour and on-site support) followed by two
more years of coverage for parts only.
The appliance is guaranteed against all manufacturing defects,
provided that it was installed according to the instructions
provided in this manual and in compliance with all current
rules and regulations in the country of installation. All electrical
connections should comply with the C15-100 standard.
Under no circumstances does a defective part warrant the
replacement of the whole appliance.
The warranty only applies to parts which we (AUER) identify as
having been defective at manufacture. If necessary, the part
or product should be returned to the manufacturer, but only
with prior agreement from our technical department. Labour,
transport, and packaging costs are the responsibility of the user.
Repairs on a device will not result in compensation.
The warranty on replacement parts ends at the same time as
the warranty of the appliance.
The warranty only applies to the appliance and its components
and excludes any part or installation external to the appliance:
electrical parts, hydraulic components, etc...
The warranty will not apply in the absence of, insucient, or
improper, maintenance of the appliance.
It is essential to carry out regular annual maintenance on the
appliances and on the installation to ensure sustained use
and durability. This maintenance should be carried out by
your installer, or by an AUER-approved technical center. In the
absence of regular maintenance the warranty is rendered null
and void.
Any work on the refrigerant circuit must be undertaken by a
qualied professional with a category 1 certicate of aptitude.
It is forbidden to release gas from the refrigerant circuit into the
atmosphere, and it is obligatory to recover the refrigerant before
undertaking any work on the circuit.
The HRC70 Heat Pump uses R290 refrigerant uid. Given the
ammable nature of the uid, any work on the refrigerant circuit
must be done with appropriate materials and conforming to all
regulations in eect.
If an appliance is presumed to be the cause of any damage,
it must not be moved or tampered with before an expert
assessment has been carried out.
6.1 - Limitations of warranty
The warranty does not apply to defects or damage caused by
situations or events such as:
- Misuse, abuse, negligence, improper transport or handling.
- Incorrect installation, or installation which has been carried
out without following the instructions in the manual and
user guide.
- Insucient maintenance.
- Modications or changes carried out on the appliance.
- Impacts from foreign objects, re, earthquakes, oods,
lightning, ice, hailstones, hurricanes or any other natural
disaster.
- Movement, imbalance, collapse or settling of the ground or
the structure where the appliance is installed.
- Any other damage which is not due to defects in the product.
We do not guarantee against variations in the colour of the
appliance or damage caused by air pollution, exposure to
chemical elements, or changes brought about by adverse
weather conditions.
The products are not guaranteed against dirt, rust, grease or
stains which occur on the surface of the appliance. We are not
responsible for any variations in colour.
6.1.1 - General information
6.1.2 - Cases (not limited to) for exclusion from
warranty
6.1.2.1 - Water from the heating circuit
6.1.2.2 - Handling
6.1.2.3 - Placement
6.1.2.4 - Electrical connections
Cases (not limited) for exclusion from warranty:
- Not rinsing the heating circuit
- Using rain or well-water
- Not treating the water for lling the heating circuit according to
the instructions in the installer intruction manual.
Cases (not limited) for exclusion from warranty:
- Any damage sustained by impacts or falls during handling after
delivery from the factory.
- Deterioration in the condition of the appliance after handling
where the instructions in the manual have not been followed.
- Deterioration of the HRC70 Heat Pump because it was leaning
or laid at.
Cases (not limited to) for exclusion from warranty :
- Placement of the HRC70 Pilot in a location where it could be subject to
ice/frost or other adverse weather conditions.
- Absence of frost protection for the appliances in the installation.
- Placement of the Heat Pump on a surface which cannot support
the weight of the appliance, or installation of the HRC70 Pilot on
a vertical surface which is not appropriate for the weight of the
appliance.
- Not resepcting the horizontal positioning of the Heat Pump.
- Not positioning the appliance in accordance with the instructions
in the installer manual.
Costs incurred due to access diculties are not the manufacturer’s
responsibility.
Cases (not limited) for exclusion from warranty:
- Faulty electrical connection which does not conform to the
national standards in eect.
- Not following the electrical connection diagrams provided in
the installer manual.
- Electrical supply being signicantly over- or under- the required
voltage.
- Not respecting the supply cable sections.
- Absence of, or insucient electrical protection throughout the
appliance (fuses / circuit breaker, grounding…).
6.1.2.5 - Hydraulic connections
Cases (not limited) for exclusion from warranty:
- Inversing the inlet/outlet connections.
- Water pressure over 2,5 bars.
- Absence of, improper mounting of, or obstruction of pressure-
relief valves.
- External corrosion due to piping being improperly sealed, or
due to condensates not draining properly.
- Inappropriate connection for the draining and recovery of
condensates.
- Installation which does not comply with the instructions
provided in the installer manual.
6.1.2.6 - Accessories
The warranty does not cover faults or defects resulting from:
- Installation of accessories which do not comply with our
recommendations.
- The use of accessories which do not come from the manufacturer
of the appliance
6.1.2.7 - Maintenance
Cases (not limited) for exclusion from warranty:
- Not respecting the maintenance instructions provided in the
installer manual.
- Not maintaining :
. the evaporator
. the condensates drainage system
- Not using parts issued by the manufacturer.
- Outer casing and bodywork being subjected to any external
damage.
- Abnormal sludge levels.
- Not cleaning the protective lters.

- INSTALLER HRC70 32 TRI /3 HIGH TEMPERATURE HEAT PUMP MANUAL -
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APPENDICES
A1 - Dimensions
2-core sheathed cable
for Heat Pump / Pilot
connection.
(10m cable included;
20m available as
option)
Air temperature
sensor
Serial number
Cable gland for
passing through
the external heater
cable
Electrical
power
supply
Condensates drainage possible
Heating outlet
Heating inlet
from the back or through the base
A2 - Technical specications
A2.1 - General characteristics
HRC70 32 three-phase /3
Maximum temperature 70°C
R290 refrigerant uid 1.4 kg
Exterior air temperature range -20°C / +40°C
Electrical power supply 400 V three-phase
Maximum current called for 23 A
Maximum start-up current 42 A
Progressive starter standard
Head protection 32 A
Minimum width of power supply
cables 5 x 6mm² mini
Material steel
Dimensions (H x L x P) 1235 mm x 1713 mm
x 561 mm
Weight when empty 270 kg
Nominal water ow rate 3750 l/h
Hydraulic connection 33 / 42 mm
Maximum hydraulic pressure 2.5 bar
Ø of condenstes drainage Ø 20/25
Air ow rate 5.000 to 9.000 m3/h
Adjustable silent blocks standard
Sound levels EN 12102 66 dB(A)