Enapter WT 2.1 User manual

Version
Document Title
Release Date
01
WT 2.1 –Owner’s Manual
2021-03-12
1
WT 2.1
Water supply system for ELs
Owner’s Manual
Rev. 01 –March 2021

Version
Document Title
Release Date
01
WT 2.1 –Owner’s Manual
2021-03-12
1
PREFACE
Thank you for choosing an Enapter water supply system. Please study this manual carefully before
attempting to operate the device.
If you have any further questions on installing the device, please contact the Enapter support team.
Quote the system serial number when contacting us; you can find the serial number on the module's
back.
Enapter Srl
Headquarters: Via Lavoria 56/G
56040 Crespina (PI) –Italy
T.: [phone]
Website: www.enapter.com
Mail: [email protected]om
VAT no. 13404981006
Scope of the document
This manual provides the installers, users, and owners with the information needed to carry out the
installation of the WT 2.1 safely and as intended.
Keep this manual in a safe place and readily available. Always follow its instructions. The operator's
responsibility is to ensure that an installed water tank system is always in proper condition. Please
observe any additional local requirements applicable to the installation and operation of the water
supply system. This owner's manual is intended as a general document and covers installation,
maintenance, and operation of the device.
Approved use
The WT 2.1 water supply system is designed to store water at low conductivity to provide the best
quality of pressurized water to the Enapter Electrolysers.
According to the specifications and instructions provided in this manual, the unit must only operate
for this purpose.
Observance of this manual is part of "normal use."
Danger of injury due to improper use!
Improper use of the product can result in serious injuries.
•Ensure that the manual is always accessible
•Make sure you have read and understood this manual in its entirety
•Comply with all safety instructions and warnings
•Store the manual and other documentation in a safe place and pass
them on to future owners of the product
•Comply with all local regulation

Version
Document Title
Release Date
01
WT 2.1 –Owner’s Manual
2021-03-12
2
Table of Contents
Preface ___________________________________________________________________1
Product Overview ___________________________________________________________3
Technical Specifications __________________________________________________________ 5
Safety instructions ______________________________________________________________ 6
List of Hazards _________________________________________________________________ 8
Installation _______________________________________________________________10
Tools, material, and accessories required ________________________________________________10
Unpacking _________________________________________________________________________11
WT 2.1 Connection Guide _______________________________________________________ 12
Overfilling Connection Guide __________________________________________________________13
Water Outlet Connection Guide ________________________________________________________13
Water Inlet Connection Guide__________________________________________________________14
Electrical Connection Guide ___________________________________________________________15
Water Tank Monitoring Tools ________________________________________________17
Commissioning of the WT 2.1 ________________________________________________18
Preparing for H2O flowing _______________________________________________________ 18
Pairing the Water Tank to the cloud _____________________________________________________18
Refilling____________________________________________________________________________18
WT 2.1 Working Principle ___________________________________________________19
Control, Functions, and System States _________________________________________21
Manual Start/Stop ___________________________________________________________________21
Transport, Maintenance, and Recycling ________________________________________22
Routine Maintenance ________________________________________________________________22
Disposal ___________________________________________________________________________22
Transport __________________________________________________________________________22
Appendix_________________________________________________________________23
Appendix I. Draining the WT 2.1 __________________________________________________________23
Appendix II. Cleaning the conductivity sensor _______________________________________________24
Appendix III. Depressurize the line ________________________________________________________25
Appendix IV. Manual refilling of WT 2.1 ____________________________________________________26
Appendix V. Integration in Cabinets _______________________________________________________27
Cabinet ____________________________________________________________________________27
Appendix VI. LED States _________________________________________________________________28
Appendix VII. Error codes________________________________________________________________29

Version
Document Title
Release Date
01
WT 2.1 –Owner’s Manual
2021-03-12
3
PRODUCT OVERVIEW
Enapter's Water Tank 2.1 (WT21) is a standardized, stackable, and flexible system to provide deionized
water to the electrolysers. The modular, easily maintainable design –paired with advanced software
integration –allows to set up the system in minutes, including remote control and management. To
have a water input at the right level of purification always available for your electrolysers, simply stack
this module inside standard 19" racks or any housing you wish.
Front Panel
Figure 1
The front panel of the WT 2.1 (Figure 1) includes all physical connections of the device –allowing easy
access for installers and maintenance staff, requiring access from only one direction, and simple
integration into standard 19" racks and cabinets.
1) H2O In
1. Bulkhead connector (10mm)
2. Requirements: Water input conductivity <20 µS/cm, input pressure = 0 → 6 bar
2) H2O Out
1. Bulkhead connector (8mm)
2. Output: max 3.8 L/min, up to 2.75bar
3) Overfilling
1. Bulkhead connector (10mm)
2
8
1
3
6
5
4
7
11.1
11.2
11.4
11.3
9
10

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Document Title
Release Date
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WT 2.1 –Owner’s Manual
2021-03-12
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2. Requirements: This port must never be obstructed
3. Output: In case of overfilling of the water tank, the water will exit through this port. It is
possible to use this port to equalize the tank's pressure during draining, filling, and supplying
water.
4) Depressurisation Port labelled "DEPR."
1. CPC quick connector 10 mm
2. It is only used during routine maintenance to depressurize the water outlet line and prepare
the piping to be disconnected. (Please, follow Appendix III)
5) Drain
1. CPC quick connector 10 mm
2. Only used during routine maintenance to drain the WT 2.1 and to prepare the device for
transport. (Please, follow Appendix I)
6) Maintenance Port labelled "MAINT."
1. CPC quick connector 10 mm
2. If needed by the machine to rinse and reset the conductivity sensor, please use this port if
bad water is detected. For detailed instructions of this procedure, please see Appendix II
below.
3. It can also depressurize the water inlet line and to prepare the piping to be disconnected.
7) On/Off Switch
8) Power –please refer to the Electrical Connection Guide below
9) ANT. –Antenna
A miniature antenna is attached to connect the device to the local network via Bluetooth
and Wi-Fi, enabling real-time updates and monitoring for the User via the Enapter app
and cloud.
Do not touch the antenna when the device is powered on!
10) LEDs: for LEDs Status, please refer to Appendix VI below
11) Fuses
a. AC side - PHASE line
b. AC side –NEUTRAL line
c. DC side –Solenoid valve
d. DC side –Pump

Version
Document Title
Release Date
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WT 2.1 –Owner’s Manual
2021-03-12
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TECHNICAL SPECIFICATIONS
WT 2.1
Nominal water flow out
3.8 L/h
Delivery Pressure
Up to 2.75 Barg1
Nominal Power Consumption
35W
Water output Purity
<= 20μS/cm
Input Water Requirements
Pressure ≤6 BarG
Dimensions
L:483mm H:310mm W:640mm
Weight (without water)
23 kg
Weight (with water)
62 kg
Control System Included
Energy Management System (EMS)
Communications
Wireless (Wi-Fi)
Remote Shutdown
Enapter Cloud Service, Enapter App
Safety
Conformity
CE certified according to the machine directive 2006/42/CE
EN ISO 12100
ISO 13849
EN 61010
EN 61000-6-3
EN 61000-6-2
Noise at 1 m
<60 dB
Environmental
IP Rating
20
Operating Conditions
5°C to 45°C, up to 95% humidity, non-condensing
Interfaces
H2O Outlet
8mm Tube Fitting
H2O Inlet
10 mm Tube Fitting
Overfilling
10 mm Tube Fitting
Drain port
CPC quick connector 10 mm
Depressurize
CPC quick connector 10 mm
Maintenance
CPC quick connector 10 mm
1
Internal demand pump: pressure switch setting at 2.75 barg.

Version
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Release Date
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WT 2.1 –Owner’s Manual
2021-03-12
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SAFETY INSTRUCTIONS
Warnings and Hazards
The following terms and symbols are used in this manual to indicate essential text passages which
must be given particular attention:
warning regarding fatal/serious injury
warning regarding injury
warning regarding physical damage to the product
Do not open or disassemble
Keep away from sources of heat and ignition.
No naked flames
No smoking
Minimum two persons required to handle the item
Wear Personal Protective Equipment
General safety
Any user, installer, and the operator must be aware of the following:
1. Do not use this machine in a potentially explosive area
2. We decline any responsibility resulting from improper use of the WT 2.1
a. Caused by the utilization of low water quality
b. Caused by supplying too high water inlet pressure
c. Caused by improper installation of the machine
d. Caused by leaking connections on the front panel of the device (Improper mounting
of tubing)
3. It is the installer's/user's or owner's responsibility to check and maintain the overfilling line
regularly and keep it free of ice or obstructions.
User should always observe the following rules:
1. Keep the work area clean. Clutter can create hazards around the device. Keep the work area
well illuminated.
2. Do not use the machine in explosive atmospheres. Do not use the device near flammable
substances.
3. Handle the power supply cable with care. Do not pull the electric line to disconnect it from
the plug without removing power from it first. Keep the electric cable away from heat, oil,
and sharp edges.
4. Protect yourself from electric shock. Avoid any contact with earthing surfaces.
5. Never expose the device to rain or very damp conditions.

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Release Date
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WT 2.1 –Owner’s Manual
2021-03-12
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6. Keep children and people without explicit knowledge of the device and its function away to
a safe distance.
7. Only use demineralized water according to the specification stated in this manual.
8. Always disconnect the machine from electricity before any maintenance and transport.
9. Only use the machine in the way and for the purposes mentioned in this manual. If the device
is utilized for uses other than specified in this manual, unforeseen hazards may present.
10. Use the handles when lifting and moving the device.
11. Never attempt to repair the machine by yourself. The device must be repaired only by
qualified staff who use original spare parts; otherwise, risks may arise for the operator.
12. Do not store the unit at temperatures below 2°C.
13. All the water lines must be properly connected before to power the device ON.

Version
Document Title
Release Date
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WT 2.1 –Owner’s Manual
2021-03-12
8
LIST OF HAZARDS
Any system-operator, integrator, end-user, technician who performs service, maintains, or install the
device must be aware of the potential risks of its use and implement sufficient processes in case of an
accident or emergency.
Always ensure that the system is installed and operated according to local code,
regulations, and standards. Do not install, use, or maintain the system without explicit
knowledge or help from experienced and licensed system integrators, manufacturers, or
external certifying bodies.
Mechanical Hazards
Generic mechanical hazards are often ignored and commonly cause injuries. To avoid this, we
recommend wearing appropriate Personal Protective Equipment (PPE) and using suitable tools when
handling the device and packaging material.
While handling the packaging material and preliminary installation does not require specialized
technicians, general training regarding lifting heavy loads and general safety briefings is necessary to
perform these tasks safely.
Operators must comply with the general safety principles during the handling phases. In particular:
Caution!
Before handling, moving, and commissioning the system, assess the
operation's risks, and study the manual. Appropriate PPE must be worn, such
as cut-resistant gloves, safety shoes, protective goggles, etc., depending on
the activity.
Ensure to clear the area of work before starting to mount the device.
The device is heavy and must be lifted by at least two people –plan around
this and allow ample space to move around.
Do not lift the device over our heads.
Caution!
During handling the device, be cautious and use the handles on the device to
minimize the mechanical risks, such as:
•Impacts and crushing injuries due to uncontrolled movements of the
load.
•Dropping the device, causing crushing injuries.
•Loss of stability, leading to entanglements and other injuries.
At least two people must handle the packaging/device.
Electrical hazards
Do not touch the antenna when the system is powered. The unit poses no special electrical hazards,
as long as the following instructions on safety measures are observed and the Electrical Connection
Guide below is applied correctly:

Version
Document Title
Release Date
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WT 2.1 –Owner’s Manual
2021-03-12
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Caution!
•Handle the electrical installation with care. Ensure that the plug is
fastened into the connector to avoid any loosening of the wiring.
•Use only the supply voltage specified on the rear of the device.
•Do not short-circuit inputs and outputs.
•Do not reverse the polarity of inputs and outputs.
•Do not use liquids near the product.
•Never use the product if any part of it has been immersed in water.
•Do not touch the antenna when the unit is powered. Ensure you are
not charged before mounting/dismounting the antenna.
WARNING!
Always turn off the power supply when the product is being cleaned,
maintained, or transported.
Other than cleaning and routine user maintenance, any servicing must be
performed by trained, Enapter-endorsed technicians.
Thermal hazards
Thermal hazards such as burns and scalds for contact with high-temperature surfaces (which can only
present themselves in case of failure of some internal components of the device) can be prevented by
applying the following safety instructions:
•Ensure the device can only be accessed by authorized and trained staff.
•Operators and maintenance staff must wear appropriate Personal Protective Equipment (PPE)
when handling the device.
•Remove the supply of power before any service, transport, and installation of the device.
•Never open the device unless you have been specially trained for service by Enapter.
•Other than cleaning and user maintenance, specialist personnel must perform any servicing
with the power supply switched off.
Environmental hazards
The device has been designed for use in standard ambient conditions, respecting stability
requirements (in the absence of seismic or hydrogeological events of intensity).
The WT 2.1 has not been designed for outdoor use. The User's responsibility is to protect the system
and all its accessories against atmospheric phenomena such as direct sunlight, rain, snow, and
lightning. For more information about the integration of the device in cabinets, please refer to
Appendix V below.