ThermoFlow Elex 3.5 Instruction Manual

Electric Mini Tankless Water Heater
Electric Mini
Tankless
Water Heater
Elex 3.5
Elex 4.5
Elex 5.5
TM
Installaon Guide, User Manual, and Warranty Informaon
TM

02 Electric tankless water heater - Installation Maunal and User Guide
Contents
Use of the manual
Mounting installation
User manual
Maintenance
Trouble shooting
Warranty conditions
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Congratulations and thank you for choosing our electric tankless water
heater. The instruction contain important information about commis-
sioning, switching the device on and maintenance. To ensure 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 maunal, 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.
Use of the manual
Symbols used in this maunal
The following symbols are used in this maunal and on the appliance:
Fail to observe this instruction may expose you or others to danger.
Fail to observe this instruction may lead to damage to the device.
Indicates live parts.
Fail to observe this insturction may lead to damage to the device or damage
or others.
Please read the manual
Hazardour materials and waste electrical and electronic equipment
should be taken to a designated recycling location.
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Use of the manual
This appliance can be used by children aged from 8 years and above
and persons with reduced physical, sensory or mental capabilities if
they are supervised during use of the appliance and understand the
hazards involved.
This is not a toy. Chindren shall not play with this appliance.
Standards and regulations
The installation (plumbing and electrical work), commissioning and
maintenance of this appliance should only be undertaken by person-
nel with electrical qualifications and in accordance with the relevant
standards and codes and this manual.
Correct and reliable operation of this unit will only be ensured if the
original accessories and spare parts are used.
The following should also be observed:
the appliance name plate;
the technical specifications.
Electric tankless water heater - Installation Maunal and User Guide
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Mounting instructions
Contents
1 device (Thermoflow Elex 3.5/4.5/5.5)
1 bracket
1 bag of installation materials, contects:
2 gaskets
 2 anchors
 2 screws
 

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OPTION A – PRIMARY HEATER OPTION B – BOOSTER HEATER
Water Connection
OPTION A - Act as primary heater, connect the inlet with cold water
directly, and connect the outlet with mix tap.
OPTION B - Act as booster heater, connect the inlet with the outlet
of storage tank, and connect the outlet with mix tap.
INLET OUTLET INLET OUTLET

Tools
You will require the following tools for installation:
• Phillips-head screwdriver
• Open-ended wrenches
• Teflon tape
• Drill
• Stone or concrete drilling bits
• Pencil
• Adhesive tape
• Wire strippers
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Mounting instructions
Unpacking
Check if the device has been damaged in any way.
Environment
To prevent damage during transport this unit is shipped in sturdy
packing. Please recycle the packaging where possible.
Disposal of the appliance
Old appliances must not bedisposed of in your household waste!
Please bring old appliances to the appropriate recycling center nearest to
you.
Model ThermoflowTM Elex 3.5/4.5/5.5 do not have plug and need to be
connected with 220-240V supply directly.
If the electrical installation does not meet these requirements then it will
need to be modified. This should be done by a qualitied electrician in
accordance with the relevant regulations (IEC, NEC, etc.)
Preparing for installation
The water and electrical 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 electrical cable is fixed to the wall then the
device can also be fixed straight to the wall.
Electric tankless water heater - Installation Maunal and User Guide
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Frost
If there is the risk of frost in a room, the device should not be installed
in this room. If despite this advice, the device installed in a room
where there is a risk of frost, the device should be drained of water
before the risk arises.
Mounting instructions
Connection to the water supply
Blue = cold water entry side from pipe or tank (for filling)
Red = hot water exit side to tap (hot water demand)
The ThermoflowTM Elex 3.5/4.5/5.5 devices are designed for use normal
pressure systems.
The water supply pipe and water discharge pipe are marked (red for hot
water, blue for cold water).
Connection to the electricity supply
The device must be filled with water (see above). Only then may the appli-
ance be connected to the electricity supply.
Connection of the device to the power supply network must take place in
accordance with the NEC, IEC and as specified by local laws and regula-
tions.
Avoid danger from damaged power supply cables. In the event of a
damaged power supply cable, the unit should be unplugged and the
cable replaced by a licenced electrician immediately.
Ensure that the addition of this boiler will not overload the fuse protection
in your electrical panel.
Internal modifications to the product may cause problems if this work is
not carried out by authorized and qualified technical persons. The
warranty only applies if the product has not been modified in any way, i.e.
subject to it being in unchanged condition.
In order to avoid creating an unsafe situation by inappropriate resetting
of the maximum temperature safety device, this unit may not be powered
via an external switching device (a time switch for example) or connected
to a circuit, which is regularly switched on and off.
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Drawing - ThermoflowTM Elex 3.5/4.5/5.5
Installation as undersink/oversink cable model
Mounting instructions
12”
≥ 10”
1
2
3
Click
L2
L1
1. 2.
3. 4.

Drawing - ThermoflowTM Elex 3.5/4.5/5.5
Installation as undersink/oversink cable model
Mounting instructions
L1L2
12
2
3
1
INLET OUTLET
5. 6.
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Mounting instructions
Drawing - ThermoflowTM Elex 3.5/4.5/5.5
Installation as undersink/oversink cable model
The device must be installed as shown in the installation drawing for
under-sink installation on the page 9 of this manual.
1. Switch off the power supply, then prepare the 220-240V power cord
without plug, make sure the length no less than 12”.
2. Mount the bracket on the wall and fix use two screws in the accessory
bag.
3. Disassemble the cover for the internal power cord connection.
4. For the undersink installation, the two outlets are upper direction, the
left outlet is the water inlet (cold / blue), right outlet is the water outlet
(hot / red); For the oversink installation, the two outlets are lower direc-
tion, the left outlet is the water outlet (hot / red), right outlet is the water
inlet (cold / blue). Select the installation you need and cross the power
cord through the hole on the backboard, then push the water heater
toward the bracket until listening “Click”.
5. Connect the power cable to the internal terminal block, for the under-
sink installation, terminal is GND-L2-L1 respectively from left to right,
for the undersink installation, connector is L1-L2-GND respectively
from left to right, then fix the power cable.
6. Prepare water connections, assemble the cover, then switch on the
power supply.

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Electric tankless water heater - Installation Maunal and User Guide TM
Mounting instructions
Technical specifications
ThermoflowTM model
Nominal voltage
Nominal current
Flow rate (∆t=45°F)
Cable size
Switch on flow rate
Non-usage consumption
Protection class
Type of protection
Demensions
Unit weight
Water connections
Max. pressure water mains
Switch on flow pressure
Nominal power rating
Elex 3.5
220-240V, 60Hz
15 - 16 A
0.5 GPM
14 AWG
0.48 GPM
<0.1 Wh/h
I
IP 24
7⅝ x 5⅜ x 2⅝"
1.8 lb
1/2” NPT
90 PSI
7.3 PSI
3.5 kW
Elex 4.5
220-240V, 60Hz
19 - 21 A
0.7 GPM
12 AWG
0.53 GPM
<0.1 Wh/h
I
IP 24
7⅝ x 5⅜ x 2⅝"
1.8 lb
1/2’’ NPT
90 PSI
7.3 PSI
4.5 kW
Elex 5.5
220-240V, 60Hz
23 - 25 A
0.8 GPM
12 AWG
0.53 GPM
<0.1 Wh/h
I
IP 24
7⅝ x 5⅜ x 2⅝"
1.8 lb
1/2” NPT
90 PSI
7.3 PSI
5.5 kW
Power plug included
Heating system
Min. water resistance at 59°F
Bare elements
≥3300 Ω•inch
Bare elements
≥3300 Ω•inch
Bare elements
≥3300 Ω•inch
Yes No No
Circuit Breaker 2-POLE 20A 2-POLE 25A 2-POLE 30A

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50 60 70 80 90
100 110 120 130
0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20 1.30 1.40
Temperature Rise F
Flow Rate GMP
Temperature Rise vs. Flow Rate at 240V
Elex 3.5Elex 4.5Elex 5.5
Mounting instructions
Temperature Rise vs. Flow Rate at 240V
Note: Temperature rise = Hot Water Temp. - Cold Water Temp.

The device must be filled with water before connection
to the electrical supply!
User manual
Important! Purging Air Out
Before switching “ON” the power at the main circuit breaker panel, make
sure that the hot water circuit is free of air pockets or else premature
failure of the element will occur.
This unit is equipped with a 2-stage power heating element. Therefore the
outlet hot water temperature may vary in connection with inlet water
temperature and flow rate. To get the desired temperature, adjust the hot
water flow rate or add cold water at your mixer.
Make sure the pressure of your water supply system supersedes 7.3 PSI.
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Electric tankless water heater - Installation Maunal and User Guide TM

If faulty, never try to repair the device yourself. Please
contact the nearest service specialist for help.
Maintenance
This device does not require any maintenance by the user.
Repairs should always be carried out by a licensed contrac-
tor.
Care
The housing of the device can simply be cleaned with a damp cloth. Do
not use harsh chemicals or abrasives!
Prolonged shutdown
Do not use heated water as drinking water.
After prolonged shutdown of the device for example after vacation, the
device should be fully heated up to the maximum temperature (tap at
minimum flow) before reusing. Pipes should be flushed for one minute.
Check the filter which is incorporated in the cold water inlet of the device
(blue) regularly and keep it free from debris and dirt. This can be
accessed by separating the device from the tap. Make sure you have
switched off the main power supply and the main water supply.
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Trouble shooting
Symptom: No heat, indicator light off
Prolonged shutdown
Cause
Electric supply is off
No or low water flow
Water connections are reversed
Element burned out
Remedy
Turn on the main circuit breaker.
Ensure that the minimum water
pressure (7.3 PSI) to switch on
the device is met. Also check
that the inlet filter screen is clear
from any debris.
Cold water inlet = blue; Hot water
outlet = red.
Call local dealer for maintenance
Cause
Water flow too high
Incorrect power supply
Element burned out
Remedy
Reduce the water flow.
Make sure that the device is connected to
the voltage supply specified on the rating
label on the front cover of the device and
no other.
Call local dealer for maintenance
In case the product is not functioning properly, please
return it to your point of purchase.
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Warranty conditions
Warranty
The rights under this manufacturer’s warranty shall apply in addition to
the buyer's statutory rights. This warranty shall in no way restrict the
buyer’s statutory rights.
Entitlement
The claiming of rights under this warranty shall be subject to the submis-
sion of the respective proof of purchase.
Content
We guarantee as the manufacturer that this product is free of material
and manufacturing errors. Material and manufacturing errors arising
during the warranty period shall justify the rights under the warranty. This
warranty shall not cover errors due to improper installation or incorrect
usage, incorrect operating conditions, or improper maintenance or repair
work.
Normal wear and tear such as lime scaling shall also be excluded under
this warranty. The warranty will not be valid if the problem is caused by
extreme values of drinking water (pH value not between 7 and 9.5 and/or
Cl above 150 mg/l and/or Fe above 0.2mg/l).
Duration
The warranty shall be valid for 24 months. The warranty period shall
commence on the day on which the product is purchased. Warranty
services provided shall neither prolong the warranty period nor initiate a
new warranty period.
Claims
The defective product should be sent together with the proof of purchase
to the place of purchase.
We shall not be liable for transport damage. The product shall be repaired
or replaced at the discretion of us. The functioning product shall then be
sent to the buyer. We shall acquire ownership of replaced parts or
products.
We shall not be obliged to provide other services such as repair on
location.
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Warranty conditions
Invalidity of warranty
Attempted repairs carried out by a customer or third party that are not
authorized by us shall invalidate the warranty. The same shall apply if
parts are installed in the product or connected to the product that are not
original parts from us.
Restriction
This warranty shall be restricted to rectification and subsequent delivery.
This warranty shall not include compensation, withdrawal from the
agreement, reduction in price or any reimbursement for consequential
loss due to defects.
The statutory provisions and delivery conditions of the national company
or importers must be observed.
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Elex 3.5 / 4.5 / 5.5
TM