auer DS170 d User manual

Made in
France
Manual ref: 1898395
Edition n°: 22.28
Installation manual DS170 d
pilot for heat pump
Ref. 753030
The information contained in this document is non-contractual. we reserves the right to modify the technical specifications or characteristics of any of their appliances without prior notice.
DS170
d
Pilot for HRC70 & HTi70 heat pumps
*
* Concerns the HTI70 6 & 8 single-phase models

- INSTALLATION DS170 PILOT MANUAL-
2
TABLE OF CONTENTS
1SAFETY ............................................................. 4
2 PLEASE READ IMMEDIATELY......................... 7
2.1 - Conservation of documents ............................................................7
2.2 - Symbols used........................................................................................7
2.3 - Abbreviations and acronyms...........................................................7
2.4- Delivery terms and conditions.........................................................7
2.5 - Storage and transport........................................................................7
2.6 - Unpacking..............................................................................................7
2.7 - Rating plate............................................................................................7
2.8 - End of life of the appliance...............................................................7
3  INTRODUCTION ............................................. 8
3.1 - General information ...........................................................................8
3.2 - Packaging...............................................................................................8
3.3 - Accessories (included) .......................................................................8
3.4 - Accessories available as optional extras......................................8
3.5 - Operating principles...........................................................................9
3.5.1 - Connection with HTi70 6 & 8kW heat pumps ..................................................9
3.5.2 - Connection with HTi70 11 & 14kW
and HRC70 17-20 & 25kW heat pumps...............................................................9
4  INSTALLATION.............................................. 10
4.1 - Placement choice...............................................................................10
4.1.1 - Appropriate placement choice..........................................................................10
4.1.2 - Integration ................................................................................................................10
4.1.3 - Hold to the wall.......................................................................................................10
4.2 - Hydraulic installation........................................................................10
4.2.1 - Recommendations.................................................................................................10
4.2.1.1 - Backow prevention device...............................................................10
4.2.1.2 - Cross sections, purging of the heating circuits...........................10
4.2.1.3 - Desludging tank.....................................................................................11
4.2.1.4 - Preparing the hydraulic circuit (rinsing) ........................................11
4.2.1.5 - Frost protection......................................................................................11
4.2.1.6 - Underoor heating................................................................................11
4.2.1.7 - Thermostatic valves...............................................................................11
4.2.1.8 - Treatment of the water in the heating circuit..............................11
4.2.1.8.1 - Filling water..........................................................................12
4.2.1.8.2 - Treatment of the heating circuit...................................12
4.2.1.8.3 - Purging the installation...................................................12
4.2.1.8.4 - Connecting the pressure relief valve..........................13
4.2.1.8.5 - Installation of the check valve
on the heating circuit.......................................................14
4.2.2 - Hydraulic connections..........................................................................................14
4.3 - Electrical connections......................................................................15
4.4 - Connection to the Heat pump and to the accessories for
control ...................................................................................................16
4.4.1 - Control connection towards the Heat pump...............................................16
4.4.2 - Ambient temperature control............................................................................16
4.4.3 - Exterior sensor.........................................................................................................17
4.4.4 - Underoor safety device of the 65°C safety aquastat (OPT)
with manual reset (OPT) .....................................................................................17
5  SETUP........................................................... 17
5.1 - Before set-up............................................................................................................... 17
5.2 - Check watertightness.......................................................................17
5.3 - Starting set-up ....................................................................................18
5.4 - Step 1: Circuit choice........................................................................18
5.5 - Step 2: Filling .......................................................................................18
5.6 - Step 3: Purging the installation ....................................................18
5.7 - Step 4 : Choosing the back-up......................................................18
5.8 - Step 5: Finishing set-up ...................................................................18
5.9 - First use..................................................................................................18
6  SETTINGS AND FUNCTIONS ....................... 19
6.1 - Control panel.......................................................................................19
6.1.1 - Keypad........................................................................................................................19
6.1.2 - Display........................................................................................................................19
6.2 - Menus ....................................................................................................20
6.3 - Actions to be activated using a combination of buttons....20
6.4 - List of parameters which can be set ..........................................21
6.5 - Description of functionalities........................................................23
6.5.1 - Functions related to heating..............................................................................23
6.5.1.1 - AUTO temperature (heat curve) .......................................................23
6.5.1.2 - Lowering of the temperature ............................................................23
6.5.1.3 - Auto-adaptability...................................................................................23
6.5.1.4 - Ambient temperature reactivity.......................................................23
6.5.2 - Programming and timeout functions.............................................................23
6.5.2.1 - Anticipation of return from holiday................................................23
6.5.2.2 - Automatic summer/winter changeover................................................................24
6.5.3 - Ambient temperature and heating circulation control functions ........24
6.5.3.1 - Ambient temperature sensor hysteresis........................................24
6.5.3.2 - Heating circulator speed.....................................................................24
6.5.3.3 - Heating circulator control...................................................................24
6.5.3.4 - Anti-cold radiators.................................................................................24

- INSTALLATION DS170 PILOT MANUAL- 3
6.5.4 - Functions related to the production of domestic hot water ..................24
6.5.4.1 - Domestic priority sharing ...................................................................24
6.5.4.2 - Anti-legionellosis protection.............................................................24
6.6 - Speed of the heat pump circulator pump................................24
7  MAINTENANCE AND TROUBLESHOOTING25
7.1 - Maintenance........................................................................................25
7.2- Diagnostics............................................................................................25
7.2.1 - Loading the operating history...........................................................................25
7.2.2 - Consulting the current operating state of the system..............................25
7.2.3 - Water sensors ...........................................................................................................26
7.2.4 - Exterior sensor.........................................................................................................26
7.2.5 - Consulting the counters.......................................................................................26
7.2.6 - Manual forcing of components.........................................................................26
7.2.6.1 - Circulator pump .....................................................................................26
7.2.6.2 - 3-way valve..............................................................................................26
7.2.6.3 - Electrical back-up...................................................................................26
7.2.7 - Errors indicated by the pilot...............................................................................27
8  SPARE PARTS ................................................ 31
9  WARRANTY ................................................... 32
9.1 - Warranty coverage ............................................................................32
9.2 - Limitations of warranty....................................................................32
9.2.1 - General information ..............................................................................................32
9.2.2 - Cases (not limited to) for exclusion from warranty ....................................32
9.2.2.1 - Usages........................................................................................................32
9.2.2.2 - Handling....................................................................................................32
9.2.2.3 - Installation site........................................................................................32
9.2.2.4 - Electrical connections ..........................................................................32
9.2.2.5 - Hydraulic connections .........................................................................32
9.2.2.6 - Accessories...............................................................................................32
9.2.2.7 - Maintenance...........................................................................................32
APPENDIX .......................................................... 33
A1 - Technical specications....................................................................33
A1.1 - General characteristics..........................................................................................33
A1.2 - EU declaration .........................................................................................................33
A1.3 - Dimensions................................................................................................................34
A2 - Hydraulic schematic diagrams ......................................................35
A2.1 - Hydraulic connection between the pilot and the heat pump................36
A2.2 - Minimum ow rate according to the heat pump model..........................36
A3 - Wiring diagrams..................................................................................37
A4 - Recap of functions .............................................................................38
A4.1 - Control panel............................................................................................................38
A4.1.1 - Keypad........................................................................................................38
A4.1.2 - Display........................................................................................................38
A4.2 - Menus..........................................................................................................................39
A4.3- Actions to be activated using a combination of buttons..........................39

- INSTALLATION DS170 PILOT MANUAL-
4
1-SAFETY
Danger resulting from improper qualications
• Any work carried out by an unqualied person
can result in damage to the installation or in
physical injury.
• Do not perform maintenance on this appliance
unless you are a qualied professional.
• If the appliance is malfunctioning or not
working, cut the electricicty supply to the
electrical components and seek advice from a
qualied professional.
Danger resulting from improper use
This appliance should not be used by anyone
(including children under the age of 8 years
old)with reduced physical, sensory or mental
capabilities, or by anyone with insufficient
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, or if
they have been instructed in the proper use and
in the risks of operating the appliance.
Children must not play with the appliance.
Cleaning and maintenance of the appliance
must not be undertaken by children without
supervision.
Applicable areas of use
The appliance is intended for use an appliance
for the production of domestic hot water: it must
be connected to a heating installation, and while
complying with the instructions, connected to
the drinking water network.
The intended use of the appliance includes the
following points:
•Following the instructions for operating,
installing and maintaining this appliance and
all of its components.
• Ensuring the compliance of the appliance to all
inspection and maintenance conditions which
are listed in this manual.
Danger of death by electrocution
• Touching live electrical wires can cause severe
bodily injury, and lead to death by electrocution.
All installation and maintenance work must be
carried out with the appliance switched o and
by a qualied professional. Before carrying out
any work on the appliance:
- Cut-o the electricity supply.
- Ensure that there is no possibility of the power
supply becoming active again.
- Wait at least 5 minutes for the capacitors to
lose their charge.
• Do not get water on any of the control or
electrical components. Always disconnect the
appliance from the electricity supply before
carrying out work on any of the electrical
components.
Danger of death if the pressure relief valves
are missing or defective
A defective pressure relief valve may prove
dangerous and could lead to burns or other
injuries by, for example, the pipes bursting.
The information presented in this document does
not contain all of the schematic diagrams needed
for a professional installation of the pressure relief
valves.
• Install the necessary pressure relief valves on
the circuit.
• Inform the user concerning the function and
the placement of the pressure relief valves.
• Respect all applicable national and international
regulations, standards and decrees.
Risk of corrosion
The appliance should be installed in an area
where it is not exposed to humidity and without
any risk of being splashed by water.
Risk of damage related to frost
The pilot MUST be installed in an area where it is
not subject to frost or freezing.
Risk of material damage
The pilot can only work when lled with water.
Never switch on the appliance if it is not
completely lled with water and purged of air.
Rules and regulations (decrees, standards,
laws)
Once the appliance is installed and switched
on, all decrees, directives, technical rules, safety
measures and standards, must be respected in
their current version in eect.
The electrical supply must conform to all
applicable regulations in the country of
installation, as well as the NFC 15-100 standard.
• A method of disconnection ensuring a complete
cut-o must be installed in the xed piping to
conform to installation regulations (do not use
a movable outlet).
• Protect the appliance with a 2-pole circuit
breaker with a minimum contact opening of
3mm and must be grounded.
• If the electrical supply cable is damaged, it must
be replaced by the manufacturer, their customer
service technicians,or bya qualied professional
to prevent any risk of injury or danger.
• The devices for electrical cut-o must remain
accessible.
• Water and/or R290 ammable gas can ow
through the discharge pipe of the pressure
limiting device (safety valve). This pipe must
be kept open outside the building. The end
of this pipe must be placed downwards
(see § Connecting the pressure relief valve).

- INSTALLATION DS170 PILOT MANUAL- 5
Maintenance - Troubleshooting
Maintenance and cleaning of the pilot must be
carried out at least once a year by a qualied
professional.
This appliance is in compliance with the
international standards concerning electrical
safety CEI 60335-1, CEI 60335-2-102. The
CE branding on the appliance attests to its
compliance with the following directives:
- Low voltage (LV): 2014/35/UE
- Electromagnetic compatibility(CEM):
2014/125/CE
- Ecodesign concerning products related to
energy: 2013-813-UE

- INSTALLATION DS170 PILOT MANUAL-
6

- INSTALLATION DS170 PILOT MANUAL- 7
2 -PLEASE READ
IMMEDIATELY
This technical installation manual forms part of the appliance which
it refers to. In order for the warranty to be valid, the instructions must
be read prior to using the appliance.
The safety advice and instructions provided in this manual must be
strictly respected.
Our society is not liable for any damages caused from not following
the instructions provided, or improper handling, installation or use.
This technical installation manual can be modied without prior
notice.
This manual must be safeguarded and passed on to successive users
for future reference.
It will be considered as evidence in case of litigation.
2.1 - Conservation of documents
DHW.......Domestic Hot Water
DCW .......Domestic Cold Water
T°..............Temperature
HP............Heat pump
2.3 - Abbreviations and acronyms
2.4- Delivery terms and conditions
In general, the material is transported at the recipient’s own risk.
It is important to ensure that all components have been received and
that no damage has been sustained during transport upon receipt
of the appliance, and before beginning the installation procedures
Admissible storage and transport temperatures are from -20°C to
+60°C.
The Pilot must be stored and transported on its pallet and in its
original packaging and empty of water.
2.5 - Storage and transport
2.8 - End of life of the appliance
Our products are designed and manufactured using
components made of recyclable materials.
The appliance must never, in any case, be disposed of
with household waste, or in a dump.
The dismantling and recycling of the appliances must
be taken charge of by a qualied professional and in compliance
with all local and national standards in eect.
Indicates warnings and important recommendations.
2.2 - Symbols used
Contains regulated substances, do not throw in the
garbage. If disposing, please respect all regulations
pertaining to the recovery of electric and electronic
equipment.
Maximum working pressure.
PSmax
Consult the installation manual before any intervention
on the product, before handling, installation, use , and
maintenance.
Heat power output produced.
Indicates the maximum water temperature in operation.
2.7 - Rating plate
Position de la plaque signalétique
Rating plate position
2.6 - Unpacking
On reception of the pilot, check the state
of the cardboard packaging as well as
the general state of the product. Remove
cardboard box by pulling it up.
The packaging cardboard of the pilot is
stapped to the pallet.
Only remove the straps when unpacking
the pilot.

- INSTALLATION DS170 PILOT MANUAL-
8
3 - INTRODUCTION
3.3 - Accessories (included)
Each Pilot is delivered with (non-mounted):
• Exterior sensor
Allows water temperature adjustment according
to weather conditions
3.2 - Packaging
Weight
(kg)
Number
of
packages
W
(mm)
H
(mm)
D
(mm)
DS 170 Pilot 90 1 600 1970 600
3.1 - General information
The Pilot is a hydraulic pilot which ensures the control of one or
two heating circuits and the production of domestic hot water for
the household.
The Pilot is meant to be connected to an HRC70 or HTI70 range heat
pump.
The Pilot is delivered ready to use in its factory set conguration
(see § «Set-up»).
This configuration allows a simpified start-up, with factory set
parameters and without access to certain settings.
However, set-up is strongly recommended as it allows for use to be
personalised for the household. This conguration and its settings
can be modied in the expert menu.
Equipments DS170
Electrical resistance of the back-up 3 kW
Expansion vessel 8 litres
Electronic control taking charge of the optimal
management of the installation 
Essential components for the protection of the
hydraulic circuits (pressure relief valves, automatic
purgers, pressure sensors)

Scheduled programming of the comfort mode for
the 7 days of the week using programmable ranges 
• USB memory stick
To be used for loading history le of the heat
pump (keep it close to the product to ease your
exchanges with technical contacts)
3.4 - Accessories available as optional
extras
• Ambient temperature thermostat radio non-
chronoproportional -(THRnc)-
(type on/o). Wireless, programmable thermostat,
transmitting through radio-frequency. Necessary when a wired
connection between the Pilot and the ambient temperature
thermostat is not possible
(
Ref.770001)
• Ambient temperature thermostat
(TA)
2 wires - allows to control the temperature
in the heating zone
(
Ref. 710043)
• Ambient temperature sensor (SA)
2 wires - allows to control the temperature
of the heating zone on a variety of comfort
levels (programmable from the pilot).
(Ref. 751009)
• Overheating Protection Thermostat (65°C)
To protect underoor circuit against rises of temperature.
(Ref.710111)
• Check valve, 3/4’’ MF nipple and 3/4’’ MM nipple
Prevents the appearance of a thermosiphon, when the
heating circuit is o.

- INSTALLATION DS170 PILOT MANUAL- 9
3.5 - Operating principles
3.5.1 - Connection with HTi70 6 & 8kW heat pumps
3.5.2 - Connection with HTi70 11 & 14kW and HRC70 17-20 & 25kW heat pumps

- INSTALLATION DS170 PILOT MANUAL-
10
The Pilot must be placed in an area which is free from frost and
adverse weather conditions.
It must be placed as close to the heat pump as possible without
exceeding the maximum distance.
The maximum distance depends on the diameter of piping and the
number of elbows used (see «Hydraulic connection» tables).
The 2-core sheathed cable which connects the Pilot and the heat
pump measures 10m.There is a 20m length available as an optional
extra (Ref.753102).
4 - INSTALLATION
4.1 - Placement choice
The Pilot must be installed on a level
and stable base which is distanced from
appliances used for cooking and other heat
sources.
4.1.1 - Appropriate placement choice
4.1.2 - Integration
4.1.3 - Hold to the wall
Produit posé au sol,
maintenu par la
fixation murale
Appliance standing on
the oor, maintained
by wall xation
4.2.1 - Recommendations
A type CB backflow prevention device may be installed. This
device must be at dierent, non-regulated pressure zones. Check
your national laws and regulations to know if this is an obligatory
requirement. The backflow prevention device is designed to
prevent incoming heating water from entering the drinking water
circuit. It must be connected to the mains drainage system.
4.2.1.1 - Backow prevention device
The output actually needed determines the water ow rate of
the heating circuit and allows to calculate the dimensions of the
distribution network.
All necessary measures must be taken to ensure that the installation
can be continuously purged. 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.
A sucient ow rate should be ensured so that the dierence in
temperature between the outlet and inlet points does not exceed
6°C. In an installation equipped with thermostatic mixing valves, this
inspection must be done with all taps/valves open.
4.2.1.2 - Cross sections, purging of the
heating circuits
4.2 - Hydraulic installation
Consult the hydraulic schematic diagrams in the appendix.

- INSTALLATION DS170 PILOT MANUAL- 11
Plan for a desludging tank with a suicient volume at a low point
on the inlet of the heating circuit. This tank must be equipped
with a drain so it can collect the oxides, particles, and calamines
which detach from the inner walls of the heating circuit while it is
in operation.
4.2.1.3 - Desludging tank
Before placing the pilot and heat pump, it is necessary to rinse the
installation with an appropriate product.This allows to eliminate all
traces of soldering waste, joint ller, grease, sludge, metallic particles,
etc... in the radiators, underoor heating, etc...
4.2.1.4 - Preparing the hydraulic circuit
(rinsing)
Pressure head of the
installation (m) 2.5 5 7.5 10 12.5 15
Pre-inated pressure
(bar)(1) 0.25 0.50 0.75 1.00 1.25 1.50
Maximum volume of
the installation covered
by the 8L expansion
vessel*(2)
152 138 125 111 97 83
Expansion factor*(3) 0.05 0.058 0.064 0.072 0.083 0.096
*The values given are for application to radiators (water at 80o C)
For application to underoor heating:
-Multiply values(2) by 2
-Divide values(3) by 2
(1) : Deate and check pressure in the expansion vessel if necessary.
(2) : As a guideline, take into account:
•11 litres per kW heating capacity for steel radiators
• 13 liters per kW heating capacity for cast-iron radiators
• 17 liters per kW heating capacity for underoor heating
(3)For installation with a larger volume of water, multiply the volume by the
expansion factor corresponding to the pre-inated pressure to
obtain the minimum required capacity of the expansion vessel.
If necessary, add an additional expansion vessel to the 8L one
already included in the boiler.
Frost protection is necessary if the pilot is switched o during the
winter months (ex: secondary residence, etc...).
4.2.1.5 - Frost protection
If the appliance is connected to an
electricity supply, the heating circuit is
protected from freezing. It is IMPERATIVE
to drain the domestic hot water circuit however.
If the pilot is not being supplied with electricity
(electrical cut-o for example), or it is defective
and there is a risk of freezing, it is IMPERATIVE to
completely drain the appliance (heating and hot
water).
It is IMPERATIVE to refer to the
installation instructions for the initial
installation of the ambient temperature
thermostat to ensure satisfactory operation.
In an installation with both thermostatic
valves and a room temperature
thermostat, the radiator(s) in the room in which
the thermostat is located MUST be equipped
with a manual valve(s).
Thermostatic valves: these valves should prioritise rooms with higher
levels of heat gain.
4.2.1.7 - Thermostatic valves
4.2.1.8 - Treatment of the water in the
heating circuit
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.
4.2.1.6 - Underoor heating
It is mandatory to install a 65°C safety aquastat (OPT) with manual
reset on the underoor heating outlet.
OPT kit (Ref. 710111) : Use the additional wiring provided in the
kit to protect the underoor heating.
Refer to the diagrams in Appendix.
When the installation includes an underoor heating, do not exceed
a temperature target of 55°C.
CAUTION WHEN THE INSTALLATION INCLUDES A SANITARY
TANK !
1. The DHW setpoint setting must be less than 55 ° C.
2. Place the safety aquastat as close as possible to the
common outlet of all the underoor heating loops (that
is to say just upstream of the oor outlet manifold) so as
to move it away from the Pilot’s oor outlet outlet and in
order to avoid its triggering after a load of the domestic
hot water tank.

- INSTALLATION DS170 PILOT MANUAL-
12
4.2.1.8.3 - Purging the installation
The oxygen present in the air is extremely corrosive. All necessary
measures must be taken to ensure that the installation can be
continuously purged. 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.
Any deterioration of the appliance due
to inappropriate lling water, and/or
corrosion in the absence of the use of treatment
products, and/or improper purging of the
installation, will render the warranty null and
void.
RENDERINGTHEWARRANTY NULL ANDVOID
We recommend the use of products in the SENTINEL range by GE
BETZ for preventative and curative treatment of the heating circuit.
• For new installations : (less than 6 months old):
- Clean the installation with a universal cleaner to eliminate
the debris from the installation (copper, bres, soldering
uxes) Example : SENTINEL X300
- Throughly rinse the installation until the water runs clear,
with no traces of impurities left.
- Protect the installation against corrosion with a corrosion
inhibitor, example: SENTINEL X100. Or against corrosion
and freezing with an inhibitor with an anti-freeze additive.
Example :SENTINEL X500.
4.2.1.8.2 - Treatment of the heating circuit
Corrosion inhibitor :
- protects against the formation of limescale
- prevents «pinhole» type corrosion
- prevents, in new installations, the formation of sludge
and the proliferation of bacteria
(in low temperature networks: algae)
- prevents the formation of hydrogen
- eliminates the sound of the generators
Treatment products from other manufacturers can be used if they
guarantee that the product is appropriate for all the materials used
in the appliance and oers ecient resistance to corrosion. To nd
this information refer to their user manual.
• For existing installations:
- Desludge the installation with a desludging product
to eliminate any sludge from the installation. Example:
SENTINEL X400.
- Throughly rinse the installation until the water runs clear,
with no traces of impurities left.
- Protect the installation against corrosion with a corrosion
inhibitor, example: SENTINEL X100. Or against corrosion
and freezing with an inhibitor with an anti-freeze additive.
Example : SENTINEL X500.
Central heating installations must be
cleaned in order to eliminate debris
(copper, lings, soldering waste) related to
the set-up of the installation or from chemical
reactions between the metals.
Futhermore, it isimportant to protect the central
heating installations from risks of corrosion,
limescale, and microbiological development
through use of a corrosion inhibitor which is
suitable for all kinds of installations (steel or cast-
iron radiators, PEX underoor heating).
PRODUCTS USED FOR HEATING WATER
TREATMENT MUST BE APPROVED BY THE
LOCAL OR NATIONAL PUBLIC HYGIENE AND
HEALTH AUTHORITY.
4.2.1.8.1 - Filling water
The materials used for producing a heating circuit are of dierent
natures. Instances of corrosion may occur through galvanic coupling
in both new and existing installations.
The lling of the heating circuit must only be done with untreated water
(no water softener) from the drinking water network. Water from any other
source )rain-water, well-water, etc...), must be analysed and MUST have
the following properties:
8,5 UPH (acidity) U9,5
Chlorides U60 mg / litre
Conductivity < 1000 μS / cm
5 UTH (hardness in French °) U15

- INSTALLATION DS170 PILOT MANUAL- 13
4.2.1.8.4 - Connecting the pressure relief valve
The Heat Pump and the Pilot are both equipped with pressure-relief valves. The Pilot’s pressure-relief valve is set at 3 bar.
The pressure-relief valve on the Heat Pump sets the maximum acceptable pressure in the installation (2.5 bar when hot).The maximum service
pressure in the Heat Pump must, consequently, be lower than 2.5 bar.
Example : If the Heat Pump is positioned 5m below the Pilot, the pressure reading on the Pilot would be 0.5 bar 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 bar.
Therefore it would be advisable to ll the heating circuit at an intermediary pressure (between 1 and 1.5 bar).
For safety reasons (potential presence of ammable R290 gas), drainage of the Pilot’s pressure-relief valve must MANDATORILY be done
outside the building. The outlet of the drainage pipe (4m length provided with the pilot) must be placed downwards in order to avoid any
introduction of water inside, any risk of obstruction due to frozen water or any other pollution (see drawing).
If the provided drainage pipe is too short, it’s mandatory to use a well-adapted length (can by supplied on demand). It will have to be installed
as well as there will be no pinch on it, it will then ensure the drainage of the overpressure from the 3 bar safety valve outside the building.
The Pilot’s pressure-relief valve drainage pipe
must be properly secured until the outside of
the building without any pinching zone.
WARNING
Failure to comply with this requirement
concerning the evacuation of overpressure outside
the building releases the heat pump manufacturer
from any liability in case of incident.
The EPDM pipe must be pushed to the end of
the safety valve barb tip and held with a hose
clamp.
1
2
1. EPDM pipe 2. Hose clamp

- INSTALLATION DS170 PILOT MANUAL-
14
1. Power terminal
2. Electrical resistance
3. Electronic cardboard
4. Expansion vessel
5. DHW/HP Circulator pump
6. Heating circulator pump
4.2.1.8.5 - Installation of the check valve on the heating circuit
4
5
6
4
5
6
4
1
1
4
The verticality of the hydraulic circuit and/or a large tube section can create a thermosiphon. The thermosiphon can create a feeling of discomfort
because of the circulation of hot water within the radiators during the summer. To avoid this disturbance, it is mandatory to install the check
valve supplied with the pilot on the inlet from heating circuit(s) (see diagrams above).
Nota:
The installation of the check valve is possible on the outlet towards
the heating circuit but not recommended in order to optimize its
lifespan.
Check the non-return valve direction
when installing it.
Nota:
Refer to Appendix «Hydraulic Connection Between Pilot and
Heat Pump» for the selection of connection tubes between
Pilot and Heat Pump.
Connection towards the heat pump
4.2.2 - Hydraulic connections
c d eb
Description Hydraulic
connections
1 Outlet towards heating circuit(s) 3/4’’
2 Inlet from heating circuit(s) 3/4’’
3 Outlet towards heat pump 3/4’’
4 Inlet from heat pump 3/4’’
5 Domestic hot water outlet 3/4’’
6 Domestic cold water inlet 3/4’’
57
115
57
990221
f
g

- INSTALLATION DS170 PILOT MANUAL- 15
4.3 - Electrical connections
Plan for a circuit breaker dedicated to the power supply of the Pilot
on the electrical panel. It must be able to completely cut-o the
electrical supply from the network (all-pole) to eliminate any danger
when carrying out maintenance on the appliance.
How to proceed:
• Check that the «ground» cable is connected properly to the
grounding peg or grounding network of the building.
• Connect the Pilot’s electrical cable to the dedicated outlet,
equipped with a circuit breaker.
• Leave the pilot switched o until set-up.
The proper voltage is : 230 V (+10% / -15%).
Each appliance is delivered from the factory completely pre-wired.
However, it is necessary to connect the following elements to the
relevant terminals:
• The general electricity supply.
• The dierent sensors or thermostats on the Pilot.
•The 2-core shielded cable connecting the Pilot and the Heat
pump (10m length supplied).
Under no circumstances will the manufacturer be held liable for
any problems which may arise due to improper installation and/or
choice of power supply cable.
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...
1 : Stop valve
2 : Pressure-reducing valve
3 : Check valve
4 : Insulated dielectric valve
5 : Pressure-relief membrane valve
6 : Run-o siphon
7 : Expansion vessel
8 : Thermostatic mixing valve
9 : Drainage valve

- INSTALLATION DS170 PILOT MANUAL-
16
4.4 - Connection to the Heat pump and
to the accessories for control
ModBus : Connection to the heat pump
AMB : Ambient temperature sensor or thermostat
(dry contact)
BAL : Tank sensor
EXT : Exterior sensor
AUX : Dry contact towards Thorix
- Connect the two wires of the connecting cable on terminals A
and Bof the «Modbus» terminal while taking care to respect
the polarity A/B (terminal Aof the Pilot to be connected to
terminal Aof the heat pump; the same for terminal B).
- Connect:
- the brown wire to A
- the white wire to B
- the black wire to GND on both appliances.
- If you are using a dierent cable, respect the polarity of A and B as
well as the connection of the shielding on 0V on both appliances.
4.4.1 - Control connection towards the Heat
pump
Ensure that the connecting cable is distanced
from any source of electrical disturbance
(ex: washing machine, neon lighting, power
supply cable....)
Plan for the appropriate length of cable between the pilot and the
heat pump. Do not hesitate to cut the cable to the appropriate
length to AVOID LOOPS.

x 6
Heat Pump
x6
In an installation with both thermostatic valves and a room
temperature thermostat, the radiator(s) in the room in which the
thermostat is located MUST be equipped with a manual valve(s).
It is mandatory to install the ambient temperature control on an
interior wall of the room and not a wall that lets out onto the outside
of the building.
Installation against an exterior facing wall is prohibited.
Do not place the ambient temperature controller too close to a
window, a curtain, or a door. Avoid placing it in an alcove, a closet,
or behind drapes.
Do not place above a heat source (radiator,...)or against a wall with
a chimney.
Do not place in reach of sun’s rays, or near powerful lighting.
Place the sensor 1.50m above oor level, and at least 50cm away
from neighboring walls. Insulate the extremeties of the electrical
cabling of the installation on the side of the appliance to prevent
air currents from inuencing the measures taken.
4.4.2 - Ambient temperature control

- INSTALLATION DS170 PILOT MANUAL- 17
EXCLUSIVELY connect either:
- The AMBIENT TEMPERATURE SENSOR
with DISPLAY (Ref. 751009)
- The AMBIENT TEMPERATURE RADIO
THERMOSTAT (Ref.770001)
All other thermostats which are chronoproportional
may cause malfunctioning and render the warranty
null and void.
4.4.4 - Underoor safety device of the 65°C
safety aquastat (OPT) with manual reset
(OPT)
Use the additional wiring provided in the kit (Ref. 710111) to protect
the oor heating circuit.
CAUTION WHEN THE INSTALLATION INCLUDES A SANITARY
TANK !
1. The DHW setpoint setting must be less than 55 ° C.
2. Place the safety aquastat as close as possible to the
common outlet of all the underoor heating loops (that
is to say just upstream of the oor outlet manifold) so as
to move it away from the Pilot’s oor outlet outlet and in
order to avoid its triggering after a load of the domestic
hot water tank.
The connection of the exterior sensor is recommended (if it is not
the heat curve is calculated using the temperature read by the heat
pump air sensor).
Place the sensor on the coldest exterior wall of the building (usually
the north-facing wall). It must not be exposed to the morning sun.
It is preferred to mount the exterior sensor in the middle of the wall of
the building or of the heating zone, at least 2.5m above ground level.
Do not place the sensor:
- above windows, doors, air exhausts, or other heat sources,
- beneath balconies or gutters
To prevent mistakes in the temperatures measured due to air
circulation, insulate the extremities of the sensor’s electrical conduit.
Do not paint the exterior sensor.
4.4.3 - Exterior sensor
Note :
After connection, go to the «DISPLAY» menu and check that the
«EXTERIOR» screen appears with the value read by the probe.
If not, check the connection of the probe or the pilot connector.
Ensure that:
- All work carried out on the hydraulic circuits and the electrical
circuits are in compliance with the regulations in effect
(inspection by a qualied professional)
-The pressure relief valve on the cold water inlet of the domestic
hot water tank is working properly and is properly connected
to a drain in complaince with the regulations in eect.
- All piping is watertight.
- All hydraulic connections are properly tightened.
- The correct voltage at the mains switch.
- All of the valves are open and nothing is obstructing the
circulation of water in the exchanger and in the hydraulic
circuit.
- The installation is equipped with a lter valve or a lter on its
inlet and that the lter is not clogged.
- The automatic air purger’s cap is open.
- The exterior sensor and the ambient temperature control (if
present on the installation) are connected properly.
-If using an ambient thermostat, ensure that it is actually being
used and set to be on demand (turn it to its maximum set point).
Once all of these checks have been done, turn on the heat pump
and Pilot.
5 - SET-UP
5.1 - Before set-up
Set-up must be done by a qualied
professional.
Inspect the entirety of the hydraulic connections (nuts with washers,
toric joints or anything assembled with glue) which may loosen
during transport or during the installation process, and tighten if
necessary.
After pressurising the appliance, it is important to check the
watertightness (both visually and by any lowering of pressure) of
all internal and external connections.
Any deterioration of the appliance due
to a lack of watertightness renders the
warranty null and void.
5.2 - Check watertightness

- INSTALLATION DS170 PILOT MANUAL-
18
5.3 - Starting set-up
NOTE: If you choose not to start set-up (NO) this option remains
accessible in the expert menu, by the COMMISSIO. sub-menu.
When the Pilot is turned on for the rst time, it will ask you to conrm
the language of use (French, English, German, Italian, Spanish, or
Polish), and will request to start set-up:
Choose yes and conrm by pressing .
COMMISSIO.
Activate the backow prevention device of the installation to ll the
heating circuit to just over 1.5 bars of pressure.
The Pilot automatically conrms the lling of the installation once
the pressure reaches 1.6 bars.
A manual conrmation (press ) is possible starting at 0.6
bars of pressure.
5.5 - Step 2: Filling
During the filling stage, the Pilot
indicates the pressure measured in the
heating circuit.
Filling
The Pilot will indicate when set-up has been achieved:
And will automatically put itself in standby mode.
The Pilot can be left in this state until rst use.
5.8 - Step 5: Finishing set-up
5.9 - First use
To turn on the Pilot, press .
Long pressing puts the Pilot in standby mode.
The purging cycle is launched for a duration of 30 minutes and will
automatically stop after that time is up.
At any time during the cycle, you can:
- Interrupt (or resume) the cycle by pressing on .
- End the cycle and continue to the next step by pressing
5.6 - Step 3: Purging the installation
During the cycle, check that the automatic purgers are open and
regularly activate the manual purgers.
If the pressure in the circuit becomes insucient due to the volume
of air purged, the Pilot will indicate it and will pause the purging
cycle.
Activate the backow prevention device or the lling valve to raise
the pressure.The purging cycle will resume automatically once there
is sucient pressure.
During the purging cycle, the screen
indicates the countdown until the
automatic stop of the cycle as well as
the pressure in the circuit.
The purging cycle activates the circulator pump at an alternating
rhythm to allow the displacement and purging of any air bubbles
accumulated at high points of the installation using the Pilot’s
automatic purger.
5.7 - Step 4 : Choosing the back-up
It is possible to select the electrical back-up, or not to declare a
back-up.
AIR BLEED
5.4 - Step 1: Circuit choice
Select the kind of circuit connected
(domestic hot water, radiators).
NOTE:
Circuits are proposed according to the connected sensors.

- INSTALLATION DS170 PILOT MANUAL- 19
6 - SETTINGS AND FUNCTIONS
6.1 - Control panel
6.1.1 - Keypad
Button Primary function
ex.: decrease / scroll down
Secondary function
ex.: holiday mode
Primary function
(short press)
Secondary function
(long press)
- menu access
- return / cancel
locking / unlocking of the
keypad
- switch on standby mode
- setting the
temperatures
program scheduled
comfort modes
- increase the setting
- scroll up
activate temporary
comfort mode
- conrm / remove error
- display pressure or T°
information on
temperatures and current
operating state
- decrease the setting
- scroll down activation of holiday mode
c9 character message
eDay of the week: (1= Monday; 2= Tuesday...)
fDisplay zone: temperatures, pressure, settings, time...
dCurrent comfort mode
6.1.2 - Display
defrosting in progress circulating pump working
ventilator working domestic hot water acti-
vated
compressor working heating activated
power level keypad locked
electrical back-up installer menu
bSymbols of current operating state
Programming
active Comfort mode Eco mode
Frost protection
mode Holiday mode
b
c
d
ef

- INSTALLATION DS170 PILOT MANUAL-
20
6.2 - Menus 6.3 - Actions to be activated using a
combination of buttons
Action combination of
buttons
Reset counters to zero
Certain counters cannot be reset to zero. Only
the counters which can be reset are aected by
this action.
in the «counters» menu
+
press for 5s
Reset to default settings
(return to factory settings)
in the «settings» menu
+
press for 5s
Menus (and sub-menus) access
buttons
menu User
menu INSTALLer
(Display here under will be shown or hidden according to product
conguration)
+
- HP CIRC
- CIRC.PUMP
- OUTS.TMAX
- OUTS.TMIN
- backup
- HEAT CURV 1
- HEAT TMAX.
- HEAT TMIN
- SHARING
- ANTI_BACT
: Setting the speed of HP circulating pump
: Setting the speed of heating circulating pump
: Outside temperature on the warmest day
: Outside temperature on the coldest day
: Choice of back-up
: Setting the heat curve 1
: Heat curve 1 setpoint on the coldest day
: Heat curve 1 setpoint on the warmest day
: Activation of priority sharing
: Activation of anti-bacteria function
menu expert
+
- settings
- display
- data calc
- counters
- configura.
- air bleed
- manual
- COMMISSIO
- software
: Access to all parameters
: State of operation of the pilot
: Temperatures and time delays in progress
: Operation counters
: Choice of circuits and their controls
: Activation of a special air purge cycle
: Manual operation of component for diagnostics
: Access to the set-up
: Manage software version
Press to exit the menus and sub-menus.