Intuis Z1 Pilot User manual

Made in France
Manual ref. : 1898978
Edition n° : 23.38
Installation manual Z1 Pilot
78 liters - 10 hydraulic outlets
Ref. 753041
The information contained in this document is non-contractual. Auer reserves the right to modify the technical specifications or characteristics of any of their appliances without prior notice.
Z1 Pilot
Hydraulic pilot for heat pumps

- Z1PILOT MANUAL -
2
TABLE OF CONTENTS
1  SAFETY............................................................ 4
2  PLEASE READ IMMEDIATELY ........................ 6
2.1 - Conservation of documents ............................................................6
2.2 - Symbols used........................................................................................6
2.3 - Abbreviations and acronyms...........................................................6
2.4 - Delivery terms and conditions........................................................6
2.5 - Storage and transport........................................................................6
2.6 - Unpacking..............................................................................................6
2.7 - Rating plate............................................................................................6
2.8 - End of life of the appliance...............................................................6
3  INTRODUCTION ............................................. 7
3.1 - General information ...........................................................................7
3.2 - Packaging...............................................................................................7
3.3 - Accessories (included) .......................................................................7
3.4 - Optional accessories available........................................................7
3.5 - Operating principles...........................................................................8
4  INSTALLATION................................................ 8
4.1 - Placement choice.................................................................................8
4.1.1 - Appropriate placement choice............................................................................8
4.1.2 - Wall mounting ...........................................................................................................8
4.1.3 - Space requirement...................................................................................................8
4.2 - Hydraulic installation..........................................................................9
4.2.1 - Recommendations...................................................................................................9
4.2.1.1 - Backow prevention device................................................................. 9
4.2.1.2 - Cross sections, purging of the heating circuits............................. 9
4.2.1.3 - Desludging tank....................................................................................... 9
4.2.1.4 - Preparing the hydraulic circuit (rinsing) .......................................... 9
4.2.1.5 - Insulation of the pipes ...........................................................................9
4.2.1.6 - Expansion vessel ......................................................................................9
4.2.1.7 - Frost protection......................................................................................10
4.2.1.8 - Thermostatic valves...............................................................................10
4.2.1.9 - Treatment of the water in the heating circuit..............................10
4.2.1.9.1 - Filling water..........................................................................10
4.2.1.9.2 - Treatment of the heating circuit...................................10
4.2.1.10 - Installation of the DHW circuit........................................................11
4.2.1.11 - Purging the installation.....................................................................11
4.2.1.12 - Connecting the pressure relief valve............................................11
4.2.1.13 - Water inlet lter for each heat pump (supplied)......................12
4.2.2 - Hydraulic connections..........................................................................................12
4.2.2.1 - Installation of control devices to balance the hydraulic network ...12
4.2.2.2 - Connection of heat pump circulators and emitter circuits.....12
4.2.2.2.1 - Connection of heat pump circulators.........................12
4.2.2.2.2 - Connection of the circulators in the source circuits 13
4.2.2.2.3 - Circulator speed adjustment.........................................13
4.2.2.3 - Sizing of hydraulic circuits between HRC70 pilot and primary
exchangers of DHW heaters...............................................................13
4.2.2.4 - Underoor heating connection........................................................14
4.2.2.4.1 - Connecting one or more underoor heating systems..14
4.2.2.4.2 - Connecting an underoor heating system with a
second high-temperature circuit.................................14
4.3 - Electrical connections......................................................................14
4.3.1 - Power electrical connections .............................................................................14
4.3.2 - Prior recommandations before power electrical connections ..............14
4.3.3 - Connecting the hydraulic pilot electrical board...................................................15
4.3.4 - Power connection of the HRC70 heat pump ........................................................15
4.3.5 - Control connection of the heat pump............................................................15
4.3.6 - Cascade of heat pumps........................................................................................16
4.3.7 - Connection of electrical back-up (optional).................................................17
4.3.8 - Addressing for transmitter circuit management.........................................20
4.4 - Connection of control circuits and accessories ......................21
4.4.1 - Distribution circulators - heating or DHW circuits......................................21
4.4.2 - Room thermostat ...................................................................................................21
4.4.3 - Exterior sensor.........................................................................................................21
4.4.4 - Domestic water aquastat.....................................................................................21
4.4.5 - Domestic water sensor.........................................................................................21
4.5 - Connection of overheat protection thermostat (OPT)........21
5  SETUP........................................................... 22
5.1 - Before set-up............................................................................................................... 22
5.2 - Check watertightness.......................................................................22
5.3 - Starting set-up ....................................................................................22
5.3.1 - Step 1 : Number of heat pump..........................................................................22
5.3.2 - Step 2 : Choice of circuits and control devices.............................................22
5.3.3 - Step 3 : Filling...........................................................................................................22
5.3.4 - Step 4 : Purging the installation........................................................................23
5.3.5 - Step 5 : Choosing the back-up...........................................................................23
5.3.6 - Step 6 : Finishing set-up.......................................................................................23
5.4 - First use..................................................................................................23
6  SETTINGS AND FUNCTIONS .......................24
6.1 - Control panel.......................................................................................24
6.1.1 - Keypad........................................................................................................................24
6.1.2 - Display........................................................................................................................24
6.2 - Menus ....................................................................................................25
6.3 - Actions to be activated using a combination of buttons....25
6.4 - List of adjustable parameters.......................................................26
6.5 - Description of functionalities........................................................29
6.5.1 - Functions related to heating..............................................................................29
6.5.1.1 - AUTO temperature (heat curve) .......................................................29
6.5.1.2 - Lowering of the temperature ............................................................29
6.5.1.3 - Auto-adaptability...................................................................................29
6.5.1.4 - Ambient temperature reactivity.......................................................29
6.5.2 - Programming and timeout functions.............................................................29
6.5.2.1 - Anticipation of return from holiday................................................29
6.5.2.2 - Automatic summer/winter changeover................................................................30
6.5.3 - Ambient temperature and heating circulation control functions ........30
6.5.3.1 - Ambient temperature sensor hysteresis........................................30
6.5.3.2 - Circulator pump speed........................................................................30
6.5.3.3 - Heating circulator control...................................................................30
6.5.3.4 - Anti-cold radiators.................................................................................30
6.5.4 - Functions related to the production of domestic hot water ..................30
6.5.4.1 - Domestic priority sharing ...................................................................30
6.5.4.2 - Anti-legionellosis protection.............................................................30
6.6 - Heat pump circulator speed..........................................................30

- Z1PILOT MANUAL -3
7  MAINTENANCE AND TROUBLESHOOTING...31
7.1- Diagnostics............................................................................................31
7.1.1 - Loading the operating history...........................................................................31
7.1.2 - Consulting the current operating state of the system..............................31
7.1.3 - Water sensors ...........................................................................................................32
7.1.4 - Exterior sensor.........................................................................................................32
7.1.5 - Consulting the counters.......................................................................................32
7.1.6 - Manual forcing of components.........................................................................32
7.1.6.1 - Circulator pump .....................................................................................32
7.1.6.2 - Electrical back-up...................................................................................32
7.1.6.3 - Back-up boiler .........................................................................................32
7.1.7 - Errors indicated by the pilot...............................................................................33
8  SPARE PARTS ................................................ 36
9  WARRANTY ...................................................39
9.1 - Warranty coverage ............................................................................39
9.2 - Limitations of warranty....................................................................39
9.2.1 - General information ..............................................................................................39
9.2.2 - Cases (not limited to) for exclusion from warranty ....................................39
9.2.2.1 - Usages........................................................................................................39
9.2.2.2 - Handling....................................................................................................39
9.2.2.3 - Installation site........................................................................................39
9.2.2.4 - Electrical connections ..........................................................................39
9.2.2.5 - Hydraulic connections .........................................................................39
9.2.2.6 - Accessories...............................................................................................39
9.2.2.7 - Maintenance...........................................................................................39
APPENDIX ..........................................................40
A1 - Technical specications....................................................................40
A1.1 - General characteristics...........................................................................................40
A1.2 - UE declaration...........................................................................................................40
A1.3 - Dimensions.................................................................................................................40
A2 - Hydraulic connections between the pilot and the heat pumps... 41
A2.1 - HRC70 20kW heat pump .........................................................................................41
A2.2 - HRC70 25kW heat pump .........................................................................................41
A2.3 - HRC70 32kW heat pump .........................................................................................41
A2.4 - HRC70 40kW heat pump .........................................................................................42
A3 - Wiring diagrams..................................................................................42
A3.1 - CASE n°1 - 1 HRC70 heat pump + 1 heating circuit......................................43
A3.1.1 - Heating circuit - Radiator.....................................................................43
A3.1.2 - Heating circuit - Underoor heating ...............................................44
A3.2 - CASE n°2 - 1 HRC70 heat pump + 1 DHW tank...............................................45
A3.3 - CASE n°3 - 1 HRC70 heat pump + 2 heating circuits....................................46
A3.3.1 - Heating circuit - Radiator.....................................................................46
A3.3.2 - Heating circuit - Underoor heating ...............................................47
A3.4 - CASE n°4 - 1 HRC
70
heat pump + 1 DHW tank + 1 heating circuit (radiator).....48
A3.5 - CASE n°5 - 1 HRC70 heat pump + 2 DHW tanks.............................................49
A3.6 - CASE n°6 - 1 HRC70 heat pump + 3 heating circuits (radiator) ................50
A3.7 - CASE n°7 - 1 HRC
70
heat pump + 1 DHW tank + 2 heating circuits (radiator)....51
A3.8 - CASE n°8 - 1 HRC
70
heat pump + 2 DHW tanks + 1 heating circuit (radiator)....52
A3.9 - CASE n°9 - 1 HRC70 heat pump + 3 DHW tanks.............................................53
A3.10 - CASE n°10 - 2 HRC70 heat pumps + 1 heating circuit...............................54
A3.10.1 - Heating circuit - Radiator ..................................................................54
A3.10.2 - Heating circuit - Underoor heating.............................................55
A3.11 - CASE n°11 - 2 HRC70 heat pumps + 1 DHW tank........................................56
A3.12 - CASE n°12 - 2 HRC70 heat pumps + 2 heating circuits (radiator)..........57
A3.12.1 - Heating circuit - Radiator ..................................................................57
A3.12.2 - Heating circuit - Underoor heating.............................................58
A3.13 - CASE n°13 - 2 HRC70 heat pumps + 1 DHW tank + 1 heating circuit ..59
A3.14 - CASE n°14 - 2 HRC70 heat pumps + 2 DHW tanks......................................60
A3.15 - CASE n°15 - 2 HRC70 heat pumps + 3 DHW tanks......................................61
A3.15.1 - Heating circuit - Radiator ..................................................................61
A3.15.2 - Heating circuit - Underoor heating.............................................62
A3.16 - CASE n°16 - 2 HRC70 heat pumps + 2 heating circuits + 1 DHW tank 63
A3.17 - CASE n°17 - 2 HRC70 heat pumps + 1 heating circuit + 2 DHW tanks 64
A3.18 - CASE n°18 - 2 HRC70 heat pumps + 3 DHW tanks......................................65
A3.19 - CASE n°19 - 3 HRC70 heat pumps + 1 heating circuit...............................66
A3.19.1 - Heating circuit - Radiator ..................................................................66
A3.19.2 - Heating circuit - Underoor heating.............................................67
A3.20 - CASE n°20 - 3 HRC70 heat pumps + 1 DHW tank........................................68
A3.21 - CASE n°21 - 3 HRC70 heat pumps + 2 heating circuits.............................69
A3.21.1 - Heating circuit - Radiator ..................................................................69
A3.21.2 - Heating circuit - Underoor heating.............................................70
A3.22 - CASE n°22 - 3 HRC70 heat pumps + 1 heating circuit + 1 DHW tank ..71
A3.23 - CASE n°23 - 3 HRC70 heat pumps + 2 DHW tanks......................................72
A3.24 - CASE n°24 - 3 HRC70 heat pumps + 3 heating circuits.............................73
A3.24.1 - Heating circuit - Radiator ..................................................................73
A3.24.2 - Heating circuit - Underoor heating.............................................74
A3.25 - CASE n°25 - 3 HRC70 heat pumps + 1 DHW tank + 2 heating circuits 75
A3.26 - CASE n°26 - 3 HRC70 heat pumps + 2 DHW tank + 1 heating circuit ..76
A3.27 - CASE n°27 - 3 HRC70 heat pumps + 3 DHW tanks......................................77
A3.28 - Direct and mixed circuit congurations.......................................................78
A3.28.1 - Case n°28 - 1 heat pump + 1 radiator circuit
+ 1 underoor heating circuit ...........................................................78
A3.28.2 - Case n°29 - 1 heat pump + 1 DHW tank
+ 1 underoor heating circuit ...........................................................79
A3.28.3 - Case n°30 - 2 heat pumps + 1 radiator circuit
+ 1 underoor heating circuit ...........................................................80
A3.28.4 - Case n°31 - 2 heat pumps + 1 DHW tank
+ 1 underoor heating circuit ...........................................................81
A3.28.5 - Case n°32 - 3 heat pumps + 1 radiator circuit
+ 1 underoor heating circuit ...........................................................82
A3.28.6 - Case n°33 - 3 heat pumps + 1 DHW tank
+ 1 underoor heating circuit ...........................................................83
A4 - Wiring diagram....................................................................................84
A4.1 - Wiring diagram without electrical back-up...................................................84
A4.2 - Wiring diagram with electrical back-up..........................................................85
A.5 -Settings and functions .....................................................................86
A.5.1 - Control panel...........................................................................................................86
A.5.1.1 - Keypad.......................................................................................................86
A.5.1.2 - Display.......................................................................................................86
A.5.2 - Menus.........................................................................................................................87
A.5.3 - Actions to be activated using a combination of buttons........................87
A6 - Product technical information sheet ..........................................88
A6.1 - Z1 pilot with HRC70 32kW /3 three-phase heat pump ...............................88
A6.2 - Z1 pîlot with HRC70 40kW /3 three-phase heat pump ...............................89
A6.3 - Z1 pilot with HRC70 40kW three-phase Cascade heat pump...................90
A6.4 - Z1 pilot with HRC70 50kW thre-phase Cascade heat pump .....................91
A6.5 - Z1 pilot with HRC70 64kW three-phase Cascade heat pump...................92
A6.6 - Z1 pilot with HRC70 75kW three-phase Cascade heat pump...................93
A6.7 - Z1 pilot with HRC70 80kW three-phase Cascade heat pump...................94
A6.8 - Z1 pilot with HRC70 96kW three-phase Cascade heat pump...................95

- Z1PILOT 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 ofdisconnectionensuring acomplete
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 by a 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

- Z1PILOT MANUAL -5
(see § Connecting the pressure relief valve).
Maintenance - Troubleshooting
Maintenance and cleaning of the pilot must be
carried out at least once a year by a qualied
professional.

- Z1PILOT MANUAL -
6
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
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.
Indicates the maximum water temperature in operation.
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 Z1 Pilot must be stored in its packaging. It must be transported
empty of water, horizontally, in its original packaging.
2.5 - Storage and transport
2.6 - Unpacking
On receipt of the pilot, check the state of the packaging and the
general condition of the appliance beforeunpacking.
The pilot is secured to the transport pallet by 4TH8 screws. Remode
these screws to install the driver.
2.7 - Rating plate
Rating plate
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.

- Z1PILOT MANUAL - 7
3.2 - Packaging
Weight
(kg)
Number of
packages
W
(mm)
H
(mm)
P
(mm)
Z1 Pilot 75 - 738 800 1536
3.1 - General information
3 - INTRODUCTION
Zi pilot is a hydraulic pilot which ensures working installations with
high power heat pumps. Its integrated tank ensures the decoupling
of the heat pumps circuits as well as the air bleeding and the
evacuation of the sludges.
If the power required by the installation is greater than the power
delivered by the heat pump, the pilot can call on an electric booster
(optional) or an external boiler.
The Z1 pilot is equipped with :
- One 78 liters wall tank with air bleed, pressure sensor, pilot
sensor, 6bars pressure relief valve and settling valve.
- One electronic control to monitor the installation and control
external boiler backup.
Optional distribution branches can be added (up to 2 branches) for
installation including several circuits or heat pumps :
- up to 3 heat pumps;
- up to 4 sanitary circuits or heating circuit.
The distribution branches dedicated to heat pumps ensure the
circulation in heat pumps. They must not be connected in the case
of heat pumps which have their own circulator (HRC70 40kW).
The components described below are supplied with the pilot :
• Exterior sensor
Gives the pilote the outside temperature to
adapt its heating set point
• USB memory stick
Allows downloading of the operating
history
Ensure to keep the original delivered USB ash drive.
It will facilitate your exchanges with your technical contacts.
3.3 - Accessories (included)
• Caps 1’’1/2
Used to caps unused hydraulic inlets and outlets on the pilot
cylinder.
3.4 - Optional accessories available
• 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)
• Thermo-Net gateway
Communication gateway for remote comfort control via an
Internet box.
(Réf. 770002)
• DHW sensor
For the production of domestic hot water
(
Ref. 710029)
• DHW aquastat
For the production of domestic hot water
(
Ref. 752202)
• Ambient temperature thermostat radio non-
chronoproportional -THRnc-
(on/o type). Wireless, programmable thermostat, transmitting
through radio-frequency. Necessary when a wired connection
between the Z1 Pilot and the ambient temperature thermostat
is not possible
(Ref.770001)
• Hydraulic distribution branch
For distribution to a heating circuit or domestic hot water
cylinder
(Ref. 755823)
• Shielded bus connection cable - lenght 20m
For bus connection between pilot and heat pump
(
Ref. 753102)
• Shielded bus connection cable - lenght 50m
For bus connection between pilot and heat pump
(
Ref. 754103)
• Ambient temperature thermostat (TA)
2 wires - allows to control the temperature in
the heating zone
(
Ref. 710043)

- Z1PILOT MANUAL -
8
4.1 - Placement choice
4 - INSTALLATION
The Pilot lled with water can be heavy,
watch over the resistance of the wall stand.
4.1.1 - Appropriate placement choice
The Pilot must be placed in an area which is free from frost and
adverse weather conditions.
It must be placed as close as possible to the heat pump 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 is 10m long. There is a 20m length available as an optional
extra (Ref. 753102) or 50m (Ref. 754103).
4.1.2 - Wall mounting
The pilot must be xed on a resistant wall.
4.1.3 - Space requirement
The pilot must be placed at least 200mm above the oor or any
obstacle the enable it to be drained.
It must be placed at least 400mm under the ceiling to facilitate
the access to the air bleed and to the electrical back-up.
• 6kW Electrical back-up
(Ref. 754105)
• V3V start sensor
Underfloor heating temperature sensor for
installations with a second high-temperature circuit
(Ref. 710158)
• Heat pump hydraulic branch
For models below 40kW with PWM circulator
(Ref. 754205)
3.5 - Operating principles
1. 78L buer tank
2. Heat pump circulator pump
(except for HRC70 40kW)
3. Heating or DHW circuit
circulator
5. Electronic card
6. Power electronic card
7. Heating / DHW circuit
8. Drain
9. Heat pump circuit

- Z1PILOT MANUAL -9
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
4.2 - Hydraulic installation
Consult the hydraulic schematic diagrams in the appendix.
Sucient ow must be ensured in the circuits connected to the
Z1 pilot. In the case of an installation with thermostatic valves, this
check must be carried out with all the valves open.
The power actually required will determine the ow of heating water
and, by the same token, the calculation of the distribution network.
All measures must be taken to ensure that the system can be vented
at all times by installing automatic drains at each high point of the
system and manual drains on each radiator.
4.2.1.2 - Cross sections, purging of the
heating circuits
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)
The installation must be equipped with an expansion vessel with
a sucient capacity (which depends on the static height of the
installation, the blowing-up pressure of the expansion vessel and
the volume of the installation).
4.2.1.6 - Expansion vessel
4.2.1.5 - Insulation of the pipes
Insulators must be in accordance with DTU 67.1.
All the apparent pipes and accessories (circulator, expansion vessel,
valve, ...) must be insulated or placed in insulated box.

- Z1PILOT MANUAL -
10
Frost protection is necessary if the pilot is switched o during the
winter months (ex: secondary residence, etc...).
4.2.1.7 - Frost protection
If the pilot is connected to electricity,
the distribution circuits are
protected from the risk of freezing.
If there is no power supply to the pilot (e.g.
power cut) or if there is a fault and there is
a risk of freezing, the appliance MUST BE
completely drained.
In an installation with both thermostatic
valvesandaroomtemperaturethermostat,
theradiator(s)in theroominwhichthethermostat
is located MUST be equipped with a manual
valve(s).
Itis IMPERATIVE to referto the installation
instructions for the initial installation of
the ambient temperature thermostat to ensure
satisfactory operation.
Thermostatic valves: these valves should prioritise rooms with
higher levels of heat gain.
4.2.1.8 - Thermostatic valves
4.2.1.9 - 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.
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 is important 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 MUSTBE APPROVEDBYTHE LOCAL
OR NATIONAL PUBLIC HYGIENE AND HEALTH
AUTHORITY.
4.2.1.9.1 - 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 PH (acidity) 9,5
Chlorides  60 mg / litre
Conductivity < 1000 μS / cm
5 TH (hardness in French °) 15
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.
• 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.
4.2.1.9.2 - 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.