ThermoFlow Elex Compact Series Instruction Manual

Electrically Controlled Tankless Water Heater
Installa�on Guide, User Manual, and Warranty Informa�on
Electrically
Controlled
Instant Water
Heater
Elex Compact Series
Elex Comfort Series

2Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Contents
0. Contents
Contents���������������������������������������������������������������������������������������������2
Introduction ����������������������������������������������������������������������������������������3
Use Of The Manual������������������������������������������������������������������������������4
Mounting Instructions �������������������������������������������������������������������������5
Technical Specifications��������������������������������������������������������������������17
User Manual �������������������������������������������������������������������������������������28
Maintenance�������������������������������������������������������������������������������������29
Troubleshooting ��������������������������������������������������������������������������������30
Warranty Conditions��������������������������������������������������������������������������33

Electric Tankless Instant Water Heater - Installation Manual and User Guide 3
EN
Introduction
1. Introduction
Congratulations and thank you for choosing our instant water heater� The instruction contains
important information about commissioning, switching the device on and maintenance� To en-
sure your safety and that of others we recommend you read through this safety manual carefully�
Please refer to the back of the manual for details about the warranty� Keep this manual for future
reference�
If you lose the manual, contact your local distributor or manufacturer� When you call, please tell
us the model number and the serial number of your unit written on the rating plate of the water
heater�
Symbols used in this manual
The following symbols are used in this manual and on the appliance:
Meets the basic safety standards of the relevant European Directives�
Failure to observe this instruction may expose you or others to danger�
Failure to observe this instruction may lead to damage to the device�
Indicates live parts�
Failure to observe this instruction may lead to damage to the device or danger to you
or others�
Please read the manual�
Hazardous materials and waste electrical and electronic equipment should be taken
to a designated recycling point�

4Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Use Of The Manual
2. Use Of The Manual
The appliance is not to be installed in locations where freezing can occur.
The resistivity of the water supply must not be less than 1300 Ω•cm.
The appliance must be permanently connected to fixed wiring.
The appliance must be earthed properly!
The appliance must be connected to a earth leakage circuit breaker.
The appliance is close-outlet type, the water connection of this appliance must be
connected to unvented water heating system.
This appliance is intended to be permanently connected to the water mains and
not connected by a hose-set.
Please refer to installation drawing part for how the appliance is to be fixed to its
support.
If the supply cord is damaged, it must be replaced by the manufacturer, its service
agent or similarly qualified persons in order to avoid a hazard.
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge
if they have been given supervision or instruction concerning use of the appliance in a
safe way and understand the hazards involved�
Children shall not play with the appliance� Cleaning and user maintenance shall not be
made by children without supervision�

Electric Tankless Instant Water Heater - Installation Manual and User Guide 5
EN
Mounting Instructions
Declaration of conformity
We hereby declares that the Thermoflow device complies with the directives and stan-
dards:
• 2014/35/EU Low Voltage Directive
• 2014/30/EU Electromagnetic Compatibility Directive
• 2011/65/EC (RoHS II)
• 2009/125/EC Ecodesign
• (EC) No� 814/2013
And also comply with the provisions of the following European Standards:
• EN 62233:2008 + C1:2008
• EN 50581:2012
• EN 61000-6-1:2007
• EN 61000-6-3:2007
• EN 60335-1:2012 + AII:2014
• EN 60335-2-35:2016
Standards and regulations
The installation (plumbing and electrical work), commissioning and maintenance of this
appliance should only be undertaken by personnel with electrical engineering qualifica-
tions and in accordance with the relevant standards and regulations (BSI, etc�) and this
manual�
The following should also be observed:
• The appliance name plate;
• The technical specifications�
Connection to the water supply
Compatible cold water pipe materials: steel, copper and plastic�
3. Mounting Instructions
Electrical installation
This unit may only be connected to a fixed cable�
It should be possible to isolate the device from the mains supply on all poles by fuses or
other means which provide a gap of at least 3mm! A leakage protection switch must be
installed�
The device has been prepared for connection to the electrical supply�
Units without denote “P“ in model name, such as Elex 6/8/8.5/9.6/10/12/15/18/21
/24/3IN1 (PEB) require a 220-240V, single-phase power supply.
Units with denote “P“ in model name, such as Elex 8/8.5/9.6/10/12/15/18/21/24/3
IN1 P(PEB) require a 380-415V, three-phase power supply.
Please take reference of the rating plate on device� If the electrical installation does
not meet these requirements then it will need to be modified� This should be done by a
qualified electrical installer, in accordance with the relevant regulations (IEEE, etc�)�

6Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Mounting Instructions
Unpacking
Check if the device has been damaged in any way�
Contents
• 1 device (Elex 6/8/8�5/9�6/10/12 (P)PEB / Elex 15PPEB)
• 1 mounting template
• 1 bag of installation materials, contents:
① 1 filter mat
② 4 spacers
③ 1 gasket
④ 4 screws
⑤ 4 anchors
Contents
• 1 device (Elex 6/8/8�5/9�6/10/12/15/18/21/24/3IN1 (P))
• 1 mounting template
• 1 bag of installation materials, contents:
① 1 inlet connector kit
② 1 outlet connector
③ 2 gaskets
④ 4 spacers
⑤ 4 anchors
⑥ 4 screws
Environment
To prevent damage during transport this unit is supplied in robust packaging� Please
recycle the packaging where possible�
Disposal of the appliance
Old appliances must not be disposed of in your household waste!
Every consumer is legally obliged to dispose of old appliances separately from their
household waste and to take them, for example, to a collection point in their local com-
munity or local district� Old electrical appliances will be accepted there free of charge�
This ensures that the old appliances are properly recycled and any negative impacts
on the environment are avoided� This is why electrical appliances are marked with the
symbol shown on the left�
①②
③
⑥
⑤
④
①
②
③
④
⑤

Electric Tankless Instant Water Heater - Installation Manual and User Guide 7
EN
Mounting Instructions
Tools
You will require the following tools for the installation:
• Phillips-head screwdriver
• Open-ended spanner 24mm
• Teflon tape
• Drill
• 8mm stone or concrete drilling bits
• Pencil
• Adhesive tape
• Wire stripper
Preparing for installation
The water and electricity supply need to be available at the place where the device is to
be supplied� If the electricity cable is buried in the wall then use the supplied spacers� If
the electricity cable is fixed to the wall then the device can also be fixed straight to the
wall�
The installation location for the appliance should keep away from the shower�
The appliance must be earthed properly!
The appliance must be connected to a earth leakage circuit breaker.
Elex 6/8/8.5/9.6/10/12 (P)PEB and Elex 15PPEB
A1.
1
2
A2.
1
2
Display plug

8Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Mounting Instructions
Elex 6/8/8.5/9.6/10/12 (P)PEB and Elex 15PPEB
A3.
MOUNTING TEMPLATE
PLANTILLA DE MONTAJE
Connection to wall
Conexión a la pared
Warm water connection
Conexión de agua caliente
Cold water connection
Conexión de agua fría
Input electric cable
Cable de entrada eléctrico
Connection to wall
Conexión a la pared
Connection to wall
Conexión a la pared
Connection to wall
conexión a la pared
8mm / 5/16”8mm / 5/16” 8mm / 5/16”8mm / 5/16”
Mindestabstand zur Decke Minimumdistance to the ceiling Distancia mínima al techo
10 cm
4”
10 cm
4”
10 cm
4”
20 cm
8”
Mindestabstand zur Wand
Minimumdistance to the wall
Distanciamínima a la pared
Mindestabstand zur Wand
Minimumdistance to the wall
Distanciamínima a la pared
Mindestabstand zum Boden
Minimumdistance to the ground
Distanciamínima al suelo
A4.a. 3-Phase
25mm
(1”)
150mm (6”)
L1
L2
L3
A4.b. Single-Phase
25mm
(1”)
150mm (6”)
L/L1
220-240V AC
N/L2

Electric Tankless Instant Water Heater - Installation Manual and User Guide 9
EN
Mounting Instructions
Elex 6/8/8.5/9.6/10/12 (P)PEB and Elex 15PPEB
A5. A6.
max. 25mm (1”)
A7. A8.
Push the button
to reset the switch
L1 L2 L3
L N
Single Phase
Wiring
3-Phase Wiring

10 Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Mounting Instructions
Elex 6/8/8.5/9.6/10/12 (P)PEB and Elex 15PPEB
A9.
Two wrenches should
be used to fix the tube
to the inlet and outlet!
Filter mat must be
installed to the inlet!
A10.
2
1
Display plug
3
A11.
InletOutlet Filter matGasket

Electric Tankless Instant Water Heater - Installation Manual and User Guide 11
EN
Mounting Instructions
Elex 6/8/8.5/9.6/10/12/15/18/21/24/3IN1 (P)
B1.
1
B1.
2
B2.
B2.
2
1
Display plug
B3.
B3.
MOUNTING TEMPLATE
Minimum distance from wall Minimum distance from wall
Warm waterconnection Cold water connection
Minimum distance to the ground
Minimum distance to the ceiling
Connection to wall Connection to wall
Input electric cable
Screws, washers and anchors
5/16”
5/16”
5/16”
4”
8”
4” 4”
5/16”
Rev02 NA
B4.
B4.
100mm(4”)
50mm(2”)
pipe wall
pipe wall
Don’t over-tighten the connections!
Use a spanner!
Max 18 Nm
Arrow on the inlet connector
must be installed outward from
the wall!

12 Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Mounting Instructions
Elex 6/8/8.5/9.6/10/12/15/18/21/24/3IN1 (P)
B5.a. 3-Phase
B9.
25mm
(1”)
150mm (6”)
L1
L2
L3
B5.b. Single-Phase
B9.
25mm
(1”)
150mm (6”)
L/L1
N/L2
L/L1
N/L2
220-240V
220-240V
B6.
B5.
B7.
max. 25mm (1”)
B6.

Electric Tankless Instant Water Heater - Installation Manual and User Guide 13
EN
Mounting Instructions
Elex 6/8/8.5/9.6/10/12/15/18/21/24/3IN1 (P)
B8.
B7.
B9.
B8.
Inlet Connector
Outlet Connector
Gasket
Gasket
B10.
Push the button
to reset the switch
L1 L2 L3
L1
/L
L2
/N
L1
/L
L2
/N
3-Phase Wiring
Single Phase
Wiring
B11.
4
5
1
18kW
Power adjustment for 3IN1 models
21kW 24kW
Display plug
2
3

14 Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Mounting Instructions
B12.
Inlet
Outlet
The appliance must be earthed properly!
The filter mat contained in accessory bag must be installed when connecting with
inlet(cold) water pipe or hose!
Earth leakage circuit breaker must be installed with the appliance, please take
page.17 to 27 for the selection of breaker.
Frost
The appliance is not to be installed in locations where freezing can occur.
The device should be installed in a vertical position in a room protected from frost and
in the proximity of the water connections�
In case the room cannot be protected against frost, the device should not be installed in
this room� Should the device be installed in such a room, the device should be emptied
before the frost danger will occur�
Do not switch on if there is a possibility that the water in the device is frozen�
Commissioning
• Install the device following the steps below�
• Fill the device and vent it by opening a hot water tap connected to it�
• Only switch on the electrical supply once the device is clear of any air�
• Check the operation of the device�

Electric Tankless Instant Water Heater - Installation Manual and User Guide 15
EN
Mounting Instructions
Elex 6/8/8.5/9.6/10/12 (P)PEB and Elex 15PPEB
See image A1, A2
1� Remove the screw with a Phillips-head screwdriver and open the top cover, as indi-
cated in A1�
2� Remove the display plug, remove the top cover and put aside, as indicated in A2�
See image A3
3� Use two pieces of tape to fix the template on the wall where the device is to be in-
stalled�
4� Drill four 8mm holes as the template indicated�
See image A4, A5, A6, A7, A8
5� Prepare the power cable with desired voltage and cut to the required length, as indi-
cated in A4.a and A4.b�
6� Insert the anchors into the drilled holes and install the appliance with the supplied
screws and spacers, as indicated in A5, A6 and A7�
7� Connect the power cable to the terminal block, press the button to reset the switch,
as indicated in A8�
Power supply must be confirmed before wiring!
This appliance must be earthed properly!
Earth leakage circuit breaker must be installed!
The electrical connection should be made by a qualified electrician, in accordance
with the relevant regulations (IEC, NEC, etc.)
See image A9, A10, A11
8� Use two wrenches to fix inlet and outlet tube�
9� Insert the display plug, and install the top of the housing�
10� Install the screw at the bottom�
11� Install the hot water pipe to the left, and install the cold water supply to the right�
Make sure the connections are watertight!
12� Switch on the circuit breaker, turn on the appliance and open the hot water tap,
wait for about 20 secs before the appliance start working�
Make sure only fittings for close-outlet water heaters can be used!
Make sure the filter mat in the inlet is installed, as indicated in A9 and A11�

16 Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Mounting Instructions
Elex 6/8/8.5/9.6/10/12/15/18/21/24/3IN1 (P)
See image B1, B2
Remove the screw with a Phillips-head screwdriver and open the top cover� Remove the
display plug and remove the top cover and put beside� Detach the support from the bot-
tom housing�
See image B3, B4
1� Use two pieces of tape to fix the template on the wall where the device is to be in-
stalled�
2� Drill four 8mm holes through the template, as indicated in B3�
3� Install cold water inlet connector and gasket to cold water supply (in the wall) on the
right, and hot water outlet connector to hot water supply (in the wall) on the left, as
shown in B4� Teflon tape can be used for sealing the threads�
Make sure the arrow on the inlet connector outward from the wall.
See image B5, B6, B7, B8, B9, B10
4� Prepare the power cable with desired voltage and cut to the required length, as indi-
cated in B5.a and B5.b�
5� Insert the anchors into the drilled holes and install the appliance with the supplied
screws and spacers, as indicated in B6, B7 and B8�
6� Install the hot water pipe to the left, and install the cold-water supply to the right, as
indicated in B9� Make sure the connections are watertight! To prepare the connection
to the water supply, Teflon tape can be used for sealing the threads�
7� Connect the power cable to the terminal block, press the button to reset the switch,
as indicated in B10�
Power supply must be confirmed before wiring!
This appliance must be earthed properly!
Earth leakage circuit breaker must be installed!
The electrical connection should be made by a qualified electrician, in accordance
with the relevant regulations (IEC, NEC, etc.)
See image B11, B12
8� Install the back panel, adjust the power setting (only for 3IN1(P) models), insert the
display plug, install the top of the housing, and install the screw at the bottom, as
indicated in B11�
9� Install the hot water pipe to the left, and install the cold water supply to the right�
Make sure the connections are watertight, as indicated in B12�
10� Switch on the circuit breaker, turn on the appliance and open the hot water tap,
wait for about 20 secs before the appliance start working�
Make sure only fittings for close-outlet water heaters can be used!
Make sure the filter mat in the inlet is installed!

Electric Tankless Instant Water Heater - Installation Manual and User Guide 17
EN
Technical Specifications
4. Technical Specifications
Technical specifications
Single-Phase Compact Series Elex 8 PEB Elex 8.5 PEB Elex 9.6 PEB
Electric supply 220-240V ~ 50-60Hz 220-240V ~ 50-60Hz 220-240V ~ 50-60Hz
Nominal power rating 8 kW 8�5 kW 9�6 kW
Nominal current 35 A 37 A 42 A
Earth leakage circuit breaker 2-POLE 40A 2-POLE 40A 2-POLE 50A
Cable size 4�0 mm24�0 mm26�0 mm2
Resistivity of the water supply ≥ 1300 Ω•cm ≥ 1300 Ω•cm ≥ 1300 Ω•cm
Flow rate (Δt=25°C) 4�5 L/min 4�8 L/min 5�4 L/min
Flow rate (Δt=35°C) 3�2 L/min 3�4 L/min 3�9 L/min
Heating system Bare element Bare element Bare element
Temperature range 35 - 60 °C 35 - 60 °C 35 - 60 °C
Switch on flow rate 2�2 L/min 2�2 L/min 2�2 L/min
Non-usage consumption < 1Wh/h < 1Wh/h < 1Wh/h
Protection class IP25 IP25 IP25
Unit dimensions 350 x 200 x 120 mm 350 x 200 x 120 mm 350 x 200 x 120 mm
Unit weight 2�7 kg 2�7 kg 2�7 kg
Water connections G1/2" G1/2" G1/2"
Max� inlet water pressure 1�0 MPa 1�0 MPa 1�0 MPa
Min� inlet water pressure 0�1 MPa 0�1 MPa 0�1 MPa
Switch on flow pressure 0�1 MPa 0�1 MPa 0�1 MPa

18 Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Technical Specifications
Technical specifications
Single-Phase Compact Series Elex 10 PEB Elex 12 PEB Elex 6 PEB
Electric supply 220-240V ~ 50-60Hz 220-240V ~ 50-60Hz 220-240V ~ 50-60Hz
Nominal power rating 10 kW 12 kW 6 kW
Nominal current 43 A 52 A 26 A
Circuit breaker 2-POLE 50A 2-POLE 60A 2-POLE 30A
Cable size 6�0 mm26�0 mm21�5 mm2
Resistivity of the water supply ≥ 1300 Ω•cm ≥ 1300 Ω•cm ≥ 1300 Ω•cm
Flow rate (Δt=25°C) 5�6 L/min 6�8 L/min 3�4 L/min
Flow rate (Δt=35°C) 4�0 L/min 4�8 L/min 2�4 L/min
Heating system Bare element Bare element Bare element
Temperature range 35 - 60 °C 35 - 60 °C 35 - 60 °C
Switch on flow rate 2�2 L/min 2�2 L/min 2�2 L/min
Non-usage consumption < 1Wh/h < 1Wh/h < 1Wh/h
Protection class IP25 IP25 IP25
Unit dimensions 350 x 200 x 120 mm 350 x 200 x 120 mm 350x200x120mm
Unit weight 2�7 kg 2�7 kg 2�7 kg
Water connections G1/2" G1/2" G1/2"
Max� inlet water pressure 1�0 MPa 1�0 MPa 1�0 MPa
Min� inlet water pressure 0�1 MPa 0�1 MPa 0�1 MPa
Switch on flow pressure 0�1 MPa 0�1 MPa 0�1 MPa

Electric Tankless Instant Water Heater - Installation Manual and User Guide 19
EN
Technical Specifications
Technical specifications
3-Phase Compact Series Elex 6P PEB Elex 8P PEB Elex 8.5P PEB Elex 9.6P PEB
Electric supply 380-415V 3~
50-60Hz
380-415V 3~
50-60Hz
380-415V 3~
50-60Hz
380-415V 3~
50-60Hz
Nominal power rating 6 kW 8 kW 8�5 kW 9�6 kW
Nominal current 8�6 A 12 A 12 A 14 A
Earth leakage circuit breaker 3-POLE 15A 3-POLE 15A 3-POLE 15A 3-POLE 20A
Cable size 1�5 mm21�5 mm21�5 mm22�5 mm2
Resistivity of the water supply ≥ 1300 Ω•cm ≥ 1300 Ω•cm ≥ 1300 Ω•cm ≥ 1300 Ω•cm
Flow rate (Δt=25°C) 3�4 L/min 4�5 L/min 4�8 L/min 5�4 L/min
Flow rate (Δt=35°C) 2�4 L/min 3�2 L/min 3�4 L/min 3�9 L/min
Heating system Bare element Bare element Bare element Bare element
Temperature range 35 - 60 °C 35 - 60 °C 35 - 60 °C 35 - 60 °C
Switch on flow rate 2�2 L/min 2�2 L/min 2�2 L/min 2�2 L/min
Non-usage consumption < 1Wh/h < 1Wh/h < 1Wh/h < 1Wh/h
Protection class IP25 IP25 IP25 IP25
Unit dimensions 350x200x120mm 350x200x120mm 350x200x120mm 350x200x120mm
Unit weight 2�7 kg 2�7 kg 2�7 kg 2�7 kg
Water connections G1/2" G1/2" G1/2" G1/2"
Max� inlet water pressure 1�0 MPa 1�0 MPa 1�0 MPa 1�0 MPa
Min� inlet water pressure 0�1 MPa 0�1 MPa 0�1 MPa 0�1 MPa
Switch on flow pressure 0�1 MPa 0�1 MPa 0�1 MPa 0�1 MPa

20 Electric Tankless Instant Water Heater - Installation Manual and User Guide
EN Technical Specifications
Technical specifications
3-Phase Compact Series Elex 10P PEB Elex 12P PEB Elex 15P PEB
Electric supply 380-415V 3~ 50-60Hz 380-415V 3~ 50-60Hz 380-415V 3~ 50-60Hz
Nominal power rating 10 kW 12 kW 15 kW
Nominal current 15 A 17 A 22 A
Earth leakage circuit breaker 3-POLE 20A 3-POLE 25A 3-POLE 25A
Cable size 2�5 mm22�5 mm22�5 mm2
Resistivity of the water supply ≥ 1300 Ω•cm ≥ 1300 Ω•cm ≥ 1300 Ω•cm
Flow rate (Δt=25°C) 5�6 L/min 6�8 L/min 8�5 L/min
Flow rate (Δt=35°C) 4�0 L/min 4�8 L/min 6�0 L/min
Heating system Bare element Bare element Bare element
Temperature range 35 - 60 °C 35 - 60 °C 35 - 60 °C
Switch on flow rate 2�2 L/min 2�2 L/min 2�5 L/min
Non-usage consumption < 1Wh/h < 1Wh/h < 1Wh/h
Protection class IP25 IP24 IP24
Unit dimensions 350 x 200 x 120 mm 350 x 200 x 120 mm 350 x 200 x 120 mm
Unit weight 2�7 kg 2�7 kg 2�7 kg
Water connections G1/2" G1/2" G1/2"
Max� inlet water pressure 1�0 MPa 1�0 MPa 1�0 MPa
Min� inlet water pressure 0�1 MPa 0�1 MPa 0�1 MPa
Switch on flow pressure 0�1 MPa 0�1 MPa 0�1 MPa