Immergas AUDAX.DK4 Product manual

AUDAX.DK4
Instructions and warnings
Installer
Maintenance technician
IE
Outdoor unit
*1.046617ENG*
*1.046617ENG*

Instructions on how to correctly dispose of the product.
At the end of its life, this appliance must not be disposed of as mixed municipal waste.
It is mandatory to separate this type of waste so that the materials making up the appliance can be recycled and reused. Contact
authorised operators for disposal of this type of appliance. Incorrect management of waste and its disposal has potential negative
eects on the environment and on human health. e symbol on the appliance represents the prohibition of disposing of the product as mixed
municipal waste.
3 Installation ..............................................................................8
3.1 Opening the outdoor unit .......................................................8
3.2 Assembling the outdoor unit ..................................................8
3.2.1 installation structure ................................................................8
3.2.2 installing the outdoor unit.......................................................9
3.2.3 Condensate drain......................................................................9
3.2.4 Fall prevention of the outdoor unit........................................9
3.3 Connecting the water pipe ....................................................10
3.3.1 water pipe connections ..........................................................10
3.3.2 safety valve drain ....................................................................10
3.3.3 System lling...........................................................................11
3.4 Wiring connection..................................................................11
4 Antifreeze protection ...........................................................13
4.1 Hydraulic circuit protection from freezing - Glycol and
antifreeze protection valves...................................................13
4.2 Anti-freeze resistance kit (optional) ....................................14
5 Operating diagrams..............................................................15
5.1 Functional layout....................................................................15
5.2 Wiring diagrams.....................................................................16
1 Casing-related information ...................................................4
1.1 Outdoor unit .............................................................................4
1.1.1 Outdoor unit handling.............................................................4
1.1.2 Removal of accessories from the outdoor unit.....................4
1.2 Main Dimensions. ....................................................................5
2 Preparation..............................................................................6
2.1 Preparing the installation site .................................................6
2.1.1 Requirements of the outdoor unit installation site ..............6
2.1.2 Additional requirements of the outdoor unit
installation site in cold climates..............................................6
2.2 Preparing the hydraulic pipes .................................................7
2.2.1 Permitted pipe length and height dierence.........................7
2.2.2 Water volume and ow rate - minimum contents. ..............7
2.3 Preparing the wiring ................................................................7
2.3.1 electrical connections for external and internal actuators..7
e manufacturer declines all liability due to printing or transcription errors, reserving the right to make any modications to its technical and
commercial documents without forewarning.
e company IMMERGAS S.p.A., with registered oce in via Cisa Ligure 95 42041 Brescello (RE), declares that the design, manufacturing and
aer-sales assistance processes comply with the requirements of standard UNI EN ISO 9001:2015.
For further details on the product CE marking, request a copy of the Declaration of Conformity from the manufacturer, specifying the appliance
model and the language of the country.
INDEX
Warning this manual contains the exclusive instructions for use for professionally qualied
installers, in compliance with the laws in force.
e manufacturer will not be held liable in the case of damage to people, animals or property
due to the failure to observe the instructions contained in the manuals supplied.

4
1× 2× 1×
fd e
1× 1× 1×
a b c
Casing-related information
1CASINGRELATED INFORMATION
1.1 OUTDOOR UNIT
1.1.1 OUTDOOR UNIT HANDLING
ATTENTION
To prevent damage or injuries, DO NOT touch the
air inlet nozzle or the aluminium ns of the unit.
NOTE
To prevent damaging the mount feet, NEVER tilt the
unit sideways in any way:
1.1.2 REMOVAL OF ACCESSORIES FROM THE OUTDOOR
UNIT
1) Li the outdoor unit. See “1.1.1, Outdoor unit handling”.
2) Remove the accessories at the bottom of the unit.
KEY:
a = Part of the connection (with O-ring) of the antifreeze protection
valve inside the outdoor unit
b = Antifreeze protection valve (inside the outdoor unit)
c = Vacuum switch (outside the outdoor unit)
d = Installation manual of the outdoor unit
e = Cable clamp
f = Drain tting
NOTE
e shut-o valves, the control panel and the vibra-
tion-dampening feet are located inside the accessory
unit, inside the indoor unit packaging.
Slowly transport the unit as shown:

5
Casing-related information
KEY:
RHT (G1") = Return to heat pump
MHT (G1") = Flow from heat pump
1.2 MAIN DIMENSIONS.

6
>250
(mm)
b
>350
>250
a
b
>250
>350
a
b
>250
>350
a
b
>250
a
b
a
>250
>300
c
a
b
c
d
Preparation
2PREPARATION
2.1 PREPARING THE INSTALLATION SITE
WARNING
e equipment must be stored in an environment
with no ignition sources in continuous operation
(e.g.: open ames, gas equipment in operation or
electric heaters in operation).
2.1.1 REQUIREMENTS OF THE OUTDOOR UNIT
INSTALLATION SITE
Keep the following space guidelines in mind:
KEY:
a = Air outlet
b = Air inlet
NOTE
e height of the wall on the outlet side of the out-
door unit MUST BE ≤1200mm.
e outdoor unit is only designed for outdoor installation and for the
following room temperatures:
Room central heating operation –15~25°C
Production of Domestic Hot
Water –15~35°C
Special requirements for R32
e outdoor unit contains the internal coolant circuit (R32), but NO
local coolant pipe or coolant charging is required.
e total coolant charge in the system is ≤1.842kg, therefore, the system
is NOT subject to any requirement in relation to the installation site.
However, keep the following requirements and precautions in mind:
KEY:
a = Snow cover or shelter
b = Pedestal
c = Prevailing wind direction
d = Air outlet
However, provide a space of at least 300 mm under the unit. In ad-
dition, make sure that the unit is positioned at least 100 mm above
the maximum height that fallen snow is expected to reach. For more
information, consult “3.2 Assembling the outdoor unit”.
In areas subject to heavy snowfalls, it is very important to choose
an installation site where snow CANNOT reach the unit. If blowing
lateral snowfalls are possible, make sure that the heat exchanger coil
CANNOT be covered by snow. If necessary, install a snow cover or
shelter and a pedestal.
WARNING
- DO NOT puncture or burn.
- DO NOT use tools to accelerate the defrosting
process or to clean the equipment, other than those
recommended by the manufacturer.
- Keep in mind that the R32 coolant is odourless.
WARNING
e appliance must be stored in such a way as to avoid
mechanical damage, in a well ventilated environment
and with no ignition sources in continuous operation
(for example: open ames, gas appliance in operation
or electric heater in operation).
WARNING
Make sure that the installation, maintenance and re-
pair are carried out in compliance with the Immergas
instructions and local regulations in force and that
they are only performed by authorised personnel.
2.1.2 ADDITIONAL REQUIREMENTS OF THE OUTDOOR
UNIT INSTALLATION SITE IN COLD CLIMATES
Protect the outdoor unit from snow falls and make sure that the outdoor
unit is NEVER buried under snow.

7
e
d
a
H1
b
D1
D2
D3
D1
c
M
Preparation
2.2 PREPARING THE HYDRAULIC PIPES
2.2.1 PERMITTED PIPE LENGTH AND HEIGHT
DIFFERENCE
KEY:
a = Outdoor unit
b = Indoor unit
c = 3-way valve
d = Room central heating circuit
e = External storage tank unit (if applicable)
Which? Distance
H1
Maximum height difference
between outdoor unit and in-
door unit
It depends on the expansion
vessel present in the indoor unit
—
Maximum total length of the wa-
ter pipe (internal section+external
section)
To be calculated according to
the head available to the system
(see Victrix Hybrid and Victrix
Hybrid Plus instruction manuals)
D1
Maximum length of the external
section of the water pipe (to
prevent freezing the water pipe)
30m
(but limited to D2 when the
external storage tank unit is
installed)
D2
Maximum distances be-
tween the outdoor unit and
the external storage tank unit
(if applicable)
10 m
D3 Maximum distance between out-
door unit and indoor unit
To be calculated according to
the head available to the system
(see Victrix Hybrid and Victrix
Hybrid Plus instruction manuals)
2.2.2 WATER VOLUME AND FLOW RATE  MINIMUM
CONTENTS.
Minimum water volume
Check that the total water volume in the system, EXCLUDING the
water volume inside the outdoor unit, is at least 20 litres.
Minimum ow rate
Ensure minimum ow rate, so that the outdoor unit does not go into
high pressure error (1021). For the ow rate guidelines, see the tables
in “2.2.1 Permitted pipe length and height dierence”.
2.3 PREPARING THE WIRING
2.3.1 ELECTRICAL CONNECTIONS FOR EXTERNAL AND
INTERNAL ACTUATORS
NOTE
e cables used for the electrical connections inside
the connection compartment must be able to with-
stand a maximum temperature of 90°C.
Outdoor unit connections:
Item Description Wires Maximum oper-
ating current
Power supply
1Outdoor unit power
supply 2+GND (a)
Control panel
2Control panel 2 (b)
Optional equipment
3Anti-freeze resist-
ance kit 2 (c)
(a) See the information plate on the outdoor unit.
(b) Cable section from 0.75 mm² to 1.25 mm² ; maximum length:
200m.
(c) See kit instructions
NOTE
Other technical specications of the various connec-
tions can be found inside the outdoor unit.
Indoor unit connections.
NOTE
Other technical specications of the various connec-
tions can be found inside the instruction manual of
the hybrid heat pump.

8
2× 2×
2
4× 3 2×
1
574
311
4× M8/M10
(mm)
(mm)
<150
a
>300
311
574
>100
574
311
Installation
3INSTALLATION
3.1 OPENING THE OUTDOOR UNIT
DANGER: RISK OF ELECTRIC SHOCK
DANGER: RISK OF BURNS
1) Open the upper panel.
2) Open the front plate.
3) If necessary, remove the rear plate. For example, this is necessary in
the following cases:
- When the antifreeze protection valve is installed inside the outdoor
unit.
- When the anti-freeze resistance kit is installed.
3.2 ASSEMBLING THE OUTDOOR UNIT
3.2.1 INSTALLATION STRUCTURE
is section shows dierent installation structures. For all, use 4 series
of M8 or M10 anchor bolts, nuts and washers. However, provide a
space of at least 300 mm from the ground. In addition, make sure that
the unit is positioned at least 100 mm above the maximum height that
fallen snow is expected to reach.
INFORMATION
e maximum height of the top protruding part of
the bolts is 15 mm.
Anchor points
Option 1: on assembly feet "exible with strut"
KEY:
a = Maximum height reached by the fallen snow
Option 2: on plastic assembly feet

9
574
311
<100
>300
(mm)
(mm)
>300
a
4×
4× M8/M10
b
c
d
a
Installation
Option 3: on a pedestal (insert the vibration-dampening feet present
in the indoor unit packaging)
Option 4: on wall brackets (optional)
KEY:
a = Vibration-dampening rubber (supplied inside the kit)
3.2.2 INSTALLING THE OUTDOOR UNIT
3.2.3 CONDENSATE DRAIN
Make sure that the condensate water can be properly evacuated.
NOTE
If the unit is installed in cold climates:
- Take adequate countermeasures so that the evacu-
ated condensate CANNOT freeze.
- DO NOT USE the drain tting and the drain hose
in the outdoor unit, since the water drain may
freeze, decreasing the central heating capacity.
NOTE
Provide a space of at least 300 mm under the unit.
In addition, make sure that the unit is positioned at
least 100 mm above the height that fallen snow is
expected to reach.
Use the drain plug and the drain hose for drainage, except in cold
climates.
KEY:
a = Drain hole
b = Lower frame
c = Drain tting (supplied as standard)
d = Flexible hose (obtain locally)
3.2.4 FALL PREVENTION OF THE OUTDOOR UNIT
Take the following measures should the unit be installed in places where
strong wind could tilt it:
1) Prepare 2 cables as indicated in the following illustration (obtain
locally).
2) Arrange the 2 cables above the outdoor unit.
3) Insert a rubber sheet between the cables and the outdoor unit to
prevent the cables scratching the paint (obtain locally).
4) Fix the ends of the cable and tighten them.

10
235
a b
a b
c2 c3c1
Installation
3.3 CONNECTING THE WATER PIPE
3.3.1 WATER PIPE CONNECTIONS
NOTE
DO NOT use excessive force to connect the pipes.
Deforming the pipes can cause defects in the unit.
Make sure that the tightening torque DOES NOT
exceed 30N•m.
NOTE
Shut-off valve with integrated vent. It is recom-
mended to connect the shut-o valves present inside
the accessory unit in the indoor unit packaging, to
facilitate assistance and maintenance. When shut-
o valves are not installed, it is necessary to install
valves with integrated air vent on the ow from heat
pump (MHT) and on the return to heat pump (RHT).
KEY:
a = RHT (G1") Return to heat pump
b = MHT (G1") Flow from heat pump
c1 = Flat gaskets
c2 = Shut-o valve
c3 = Shut-o valve with integrated connection
of the vacuum switch (if applicable).
1) Connect the shut-o valves by inserting at gaskets and position
them with the vent facing up.
2) Connect the site pipes on the shut-o valves.
3.3.2 SAFETY VALVE DRAIN
NOTE
In the event of overpressure, the system will release
part of the liquid through the safety valve. e safety
valve of the outdoor unit is designed to open at 3 bar.
e safety valve drain must always be duly conveyed
to a draining funnel. Consequently, in the event of
valve intervention, the discharged liquid will end up
in the sewer system.
If uid containing glycol was added to the system
circuit, make sure it is recovered and disposed of in
accordance with standard EN 1717.
However, check that the exible hose of the safety
valve is ALWAYS free to discharge the pressure.
KEY:
a = Pressure discharge valve
b = Flexible hose (discharge)(obtain locally)
1) Open the upper plate, the front plate and the rear plate. See
“3.1.Opening the outdoor unit”.
2) Make a cross cut in the rubber gasket on the rear plate.
3) Route the exible hose through the gasket.
4) Close the rear plate.
5) Pull the exible hose gently so that it is tilted downwards. is pre-
vents the water from stagnating and/or freezing inside the exible
hose.
6) Close the front plate and the upper plate.

11
a
b
c
d
3×
a
b
Installation
3.3.3 SYSTEM FILLING
INFORMATION
Air vent valves.
- Manual air vent valves on the shut-o valves.
- Air vent valve inside the indoor unit.
- Manual or automatic air vent valves to be obtained
locally.
- When using glycol, automatic air purge valves
are NOT allowed.
e indoor unit MUST BE installed before lling the system. For the
instructions on lling, refer to the manual of the hybrid heat pump.
3.4 WIRING CONNECTION
DANGER: RISK OF ELECTRIC SHOCK
WARNING
For the power supply cables, ALWAYS use multi-
strand cables.
WARNING
Prevent risks due to the accidental resetting of the
heat manifold: the current to this appliance MUST
NOT be supplied through an external switching
device, such as a timer, nor should the appliance be
connected to a circuit that is regularly turned ON
and OFF by the system.
Connecting the electrical cables to the outdoor unit
NOTE
e distance between the 230 VAC power supply
cable and the low voltage signal cables must be at
least 50 mm.
ATTENTION
DO NOT push or position excessively long cables
in the unit.
1) Open the upper plate and the front plate. See “4.1.Opening the
outdoor unit”.
2) Insert the wiring on the back of the unit:
KEY:
a~d = See below
3) If cables are inserted through the blind holes c and d:
- Open the blind holes using a hammer and screwdriver.
- Insert the cable glands (supplied as accessories).
4) Position the cables inside the unit, towards the electrical panel as
follows:
KEY:
a = Main power supply
b = Control panel
5) Connect the cables inside the electrical panel to the corresponding
terminals.
6) Aer having connected all the cables, close the front plate and upper
plate.
INFORMATION
Anti-freeze resistance kit. For the cable path, see the
installation manual of the anti-freeze resistance kit.

12
1N~ 50 Hz
220-240 V
PE NL
Q1DI
123 LN
1×
a
3×
X2M
Vbus 0- 0+ GND
P1 P2
23
D- D+
X5M
1×
a
X2M
Vbus 0- 0+ GNDP1 P2
Installation
Connecting the main power supply
1) Connect the main power supply to the appropriate terminals, as
shown in the following gure.
KEY:
a = Recommended local fuse: 20A
Q1DI = Dierential switch
2) Fix the cable to the appropriate supports using the clamps.
Control panel connection
Connect the cable from the control panel to the outdoor unit.
Fix the cable to the appropriate supports using the clamps.

13
a
c
c
b4
b3
b2
b1
b4
b3
*
4 (a+b1)
5 (b2)
2×
1
4×
3
2×
2
2×
Antifreeze Protection
4ANTIFREEZE PROTECTION
4.1 HYDRAULIC CIRCUIT PROTECTION
FROM FREEZING  GLYCOL AND ANTI
FREEZE PROTECTION VALVES
Freezing may damage the system. To prevent freezing of the hydraulic
components, the soware is equipped with special antifreeze protection
functions, which include the activation of the pump of the indoor unit
in case of low temperatures.
However, if the conditions specied in the antifreeze protection para-
graph in the hybrid pump manual are missing (such as, for example,
power supply failure), these functions cannot ensure protection.
Perform one of the following actions to protect the hydraulic circuit
from freezing:
- Add glycol to water. e glycol lowers the freezing point of water. For
the indoor unit, consult the operating range contained in the technical
data table included in the instruction manual of the hybrid heat pump
and the relative antifreeze protection paragraph.
- Install the standard supplied antifreeze protection valves. e an-
tifreeze protection valves drain the water from the system before it
freezes. For the indoor unit, consult the operating range contained
in the technical data table included in the instruction manual of the
hybrid heat pump and the relative antifreeze protection paragraph.
NOTE
DO NOT install the antifreeze protection valves
when adding glycol to water. Possible consequence:
Glycol leakage from the antifreeze protection valves.
Anti-freeze protection with glycol
For the antifreeze protection with glycol, please refer to the hybrid
heat pump manual.
Antifreeze protection with antifreeze protection valves
If no glycol was added to water, antifreeze protection valves can be used
to drain the water from the system before it freezes. To do this, install
the following parts:
KEY:
a+b1+b2 = Outdoor unit protection (*: there are 2 ways of connecting
b2; see below).
b3+b4 = Local pipe protection
c = Water isolation inside the home in the event of a power failure.
Part Description
a+b1+b2 (Mandatory – supplied as standard).
aPart of the connection for b1.
b1 Antifreeze protection valve (for water drainage).
b2 Vacuum switch (facing up for air supply).
ese components are necessary to protect the indoor pipe to
the outdoor unit from freezing.
Note: ese components DO NOT protect the local pipes
from freezing.
b3+b4 (Obtain locally).
e installer is responsible for protecting the local pipes from
freezing. One solution is to install the antifreeze protection
valves in all the lowest points of the local pipes. By doing this,
the antifreeze protection valves must always be installed in pairs:
b4
b3
b3 antifreeze protection valve (facing up for water supply)
b4 Antifreeze protection valve (facing up for water drainage).
c c Normally closed valves
(Recommended - obtain locally).
e normally closed valves prevent all water coming from the
system from being drained when the antifreeze protection
valves are opened.
- In the event of a power failure: the normally closed valves
close and isolate the water inside the home. If the antifreeze
protection valves open, only the water outside the home is
drained.
- In other circumstances (for example if a pump breaks): the
normally closed valves remain open. If the antifreeze protec-
tion valves open, the water inside the home is also drained.
To connect a+b1+b2
KEY:
a = Part of the connection for b1
b1 = Antifreeze protection valve (for water drainage)
b2 = Vacuum switch (facing up for air supply)

14
Antifreeze Protection
1) Open the upper panel.
2) Open the front plate.
3) Open the rear plate.
4) Connect a+b1 as follows:
- Remove the clip.
- Remove and throw away the plug with the gasket.
- Mount the antifreeze protection valve (b1) to the connection part (a)
with a thread sealant.
12
a
b1
- Mount the connection part to the outdoor unit.
- Mount the clip.
- Close the rear plate, the front plate and the upper plate.
5) To connect b2, proceed as follows (2 possibilities):
NOTE
Vacuum switch (b2). To perform proper drainage
through the antifreeze protection valve inside the
outdoor unit, the Vacuum switch must be installed
correctly:
- Directly on the water outlet of the unit, without
any valve or local pipe in between.
- Facing up to suck the air.
Option 1
b2
Use the shut-o valves with integrated connection for
switch (supplied as standard).
1 2 3
Option 2
b2
With the T-joint (obtain locally) + shut-o valve (obtain
locally).
31
2
b2
4.2 ANTIFREEZE RESISTANCE KIT
OPTIONAL
e optional anti-freeze resistance kit can be installed to prevent freez-
ing of the bottom plate. It may be necessary in some circumstances.
Anti-freeze resistance kit
- It prevents freezing of the bottom plate.
- It is necessary in areas with room temperature <–5°C and high relative
humidity for at least 3 consecutive days.
- For the installation instructions, see the installation manual of the
anti-freeze resistance kit.

15
R1T
VALVOLE DI
INTERCETTAZIONE
VALVOLE DI
INTERCETTAZIONE
R3T
R4T
R1T
(*)(**) OR
(***)(****)
(*)
(**)
(*) OR
(**) OR
(***) OR
(****)
(***) (*)
(****) (**)
(***)
(****)
t>
R2T
R3T
S1PH
B1PR
6.4 CuT
6.4 CuT6.4 CuT
Ø4.0×ID2.0 CuT
4.8 CuT
4.8 CuT
7.0 CuT
7.0 CuT
9.5 CuT
9.5 CuT
9.5 CuT
9.5 CuT
7.9 CuT
9.5 CuT 9.5 CuT
9.5 CuT
9.5 CuT
9.5 CuT
9.5 CuT
9.5 CuT
t>
t>
M1C
Y1S
M1F
Y1E
b1
d
e
e
d
h
i i
i
i
RHT
MHT
i
h
d
b2
g
h
j
k
cc
f
c
l
l
VALVOLE DI
INTERCETTAZIONE
m
Operating diagrams
5OPERATING DIAGRAMS.
5.1 FUNCTIONAL LAYOUT
Key:
(*) - In the event of glycol-free water (without standard supplied shut-
o valves)
(**) - In the event of glycol-free water + standard supplied shut-o
valves
(***) - In the event of water with glycol (without standard supplied
shut-o valves)
(****) - In the event of water with glycol + standard supplied shut-o valves
RHT - Return to heat pump
MHT - Flow from heat pump
b1 - Stop valve (cooling liquid)
b2 - Stop valve with service opening (coolant gas)
c - Silencer
d - Silencer with lter
e - Heat exchanger
f - Storage tank
g - Safety valve
h - Cut-o valve
i - Air purge
j - Cap
k - Antifreeze protection valve
l - Vacuum switch
m - Filter
B1PR -Coolant pressure sensor
Shut-o valve - Standard supplied shut-o valves
M1C - Compressor motor
M1F - Fan motor
R1T - External probe
R1T (t>) - Water outlet probe
R2T - Evaporator probe
R3T - Compressor outlet probe
R3T (t>) - Liquid phase probe
R4T (t>) - Water inlet probe
S1PH - High pressure switch
Y1E - Electronic expansion valve
Y1S - Four way reversal
- Screw connection
- Flared connection
- Quick release connector
- Brazed connection
SHUT-OFF VALVES
SHUT-OFF VALVES
SHUT-OFF VALVES

16
Operating diagrams
5.2 WIRING DIAGRAMS
Key: A1P - Hydro main P.C.B. A2P - ModBus P.C.B. A33 - Victrix Hybrid control panel B1PR - Coolant pressure sensor E10 - Adhesive heating resistance (antifreeze) R1T (t>) - Water outlet probe R3T (t>) - Liquid phase probe R4T - Water inlet probe TR1 - Transformer
Colour code key: BK - Black BL - Blue BR - Brown G - Green GY - Grey G/Y - Yellow/Green OR - Orange P - Purple PK - Pink R - Red W - White Y - Yellow W/BK - White/Black
VICTRIX HYBRID
CONTROL PANEL
Power supply
230 Vac
50Hz
TO THE
COMPRESSOR
CONTROL

17
Operating diagrams
Inverter connection diagram
Key: M1C - Compressor motor M1F - Fan motor Q1L - Heating protection R1T - External probe R2T - Evaporator probe R3T - Compressor outlet probe S1PH - High pressure switch Y1E - Electronic expansion valve Y1S - Four way reversal
Colour code key: BK - Black BL - Blue BR - Brown G - Green GY - Grey G/Y - Yellow/Green OR - Orange
P - Purple PK - Pink R - Red W - White Y - Yellow W/BK - White/Black

18

19

IMMERGAS SPA - ITALY
CERTIFIED COMPANY
UNI EN ISO 9001:2015
Design, manufacture and post-sale assistance of gas
boilers, gas water heaters and related accessories
is instruction booklet
is made of ecological paper
immergas.com
Immergas S.p.A.
42041 Brescello (RE) - Italy
Tel. [phone]
Fax [phone]
Cod. 1.046617ENG - rev. ST.005823/000 - 09/21