Thermoflow Hydrex 18 kW Hydraulic Instantaneous Water Instruction Manual

INSTALLATION GUIDE

Hydrex 18 kW Hydraulic Instantaneous Water

Use of the manual

Thank you for choosing our Thermoflow device.
These instructions contain important information about commissioning, switching the device on and maintenance. To ensure your safety and that of others we suggest that you read these installation and operating instructions before using the device for the first time. Please keep the instructions and other documentation close to the device.
This device is manufactured in accordance with applicable standards and has been tested by the relevant authorities. It has a safety certificate and a declaration of electromagnetic confor-mity. The technical specifications of the device are shown on the label on top of the device. The device should be installed by authorised specialists.
All repair and maintenance work on the device, for example the remov-al of limestone and water scale deposits, may only be carried out by duly authorised technical staff. The applicable regulations (German Technical and Scientific Association for Gas and Water (DVGW) Technical Guide-lines for Water Systems) and regional requirements must always be duly observed!
This device is designed for use in modern dwellings, hotels, lavatories, etc. The modern de-sign, carefully selected materials and improved manufacturing process guarantee excellent value.
Do not switch on if there is a possibility that the water in the device is frozen.

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.

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 mainte-nance shall not be made by children without supervision.

Declaration of conformity

NEG-Novex GmbH hereby declares that the Thermoflow device complies with the direc-tives and standards:

• 2006/95/EC Low Voltage Directive
• 2004/108/EC 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 60335-2-35:2002 + C11:2006 + A1:2007 + A2:2011

22-07-2016
NEG-Novex Großhandelsgesellschaft für Elektro- und Haustechnik GmbH Chenover Str. 5, D-67117 Limburgerhof

Standards and regulations
The installation (plumbing and electrical work), commissioning and maintenance of this appliance should only be undertaken by person-nel with electrical engineering qualifications and in accordance with the relevant standards and regulations (BSI, etc.) 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 be observed:
DIN VDE 0100: Requirements of your electricity supplier.
DIN 1988 / DIN 4109: Requirements of your water supplier.

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.
Operating conditions to DIN 1988, Part 2, December 1988, Section 2.2.3, Table

1. There is no need to install a relief valve. Compatible hot water pipe materials: copper, approved plastic piping systems.
   During normal operations and fault conditions, the operating conditions to DIN 1988, Part 2, December 1988, Section 2.2.3, Table 1 apply.
   This device should be permanently connected to the water mains and cannot be connected by a hose-set

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!

Mounting instructions

Contents

• 1 device (Hydrex/Elex 18, 21, 24kW)
• 1 mounting template
• 1 bag of installation materials, contents:
  ① 1 extended elbow with filter
  ② 1 nipple
  ③ 4 gaskets
  ④ 4 spacers
  ⑤ 4 plugs
  ⑥ 4 screws

Unpacking
Check if the device has been damaged in any way.

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 community or lo-cal 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.

Tools

You will require the following tools for the installation:

• Cross-head screwdriver
• Open-ended spanners, 17 and 19mm
• Teflon tape
• Drill
• 8mm stone or concrete drilling bits
• Pencil
• Adhesive tape
• Wire strippers

This unit requires a 400V, three-phase supply. 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.).
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 elec-tricity cable is fixed to the wall then the device can also be fixed straight to the wall.

See image 1
Remove the top of the housing with a cross-head screwdriver. Unscrew the fixing screw of the cladding (see image 1) and then remove the cladding (see image 2).
See image 2
Install the supplied plumbing components as illustrated. The cold water isolation valve (stop valve) should not be used to choke the flow through the device.
Installation, See image 3

1. Use two pieces of self-adhesive tape to fix the template on the wall where the device is to be installed.
2. Drill two 8mm holes through the template, as indicated.
3. Bear in mind where the water pipes will be installed later.
4. Install the device with the supplied screws and plugs.
5. Install the hot and cold water pipes and supply cable as shown on the template.

See image 4
The cold water supply should be connected to the inlet on the right of the device (blue = cold water). The hot water pipe is installed on the left. Make sure the connections are watertight!
To prepare the connection to the water supply Teflon tape must be used for sealing the pipes.

See image 5

The electrical connection should be made by a qualified electrical installer, in accordance withthe relevant regulations (IEEE, etc.).
The device has been prepared for connection to the electrical supply.

See image 6
Cut the cable to the required length and connect it to the terminal strip. Use the supplied cable boot
to obtain a good seal.
See image 7
This appliance should be earthed.
See image 8
The connections are protected to IP24 (splash proof).
Final installation

• Open the cold water stop valve.
• Install the top of the housing.
• Insert the fixing screw at the bottom.

Commissioning

• ****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.

Frost
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.

Technische Daten

Size of the device (Elex)

Size of the device (Hydrex)

Gebrauchsanleitung

Description of the appliance Hydrex/ Elex
The devices with water pressure control (Hydrex 18, 21, 24kW) and those with electronic control (Elex 18, 21, 24kW) are intended for use in unvented systems, to heat cold water to DIN 1988 and to supply one or more draw-off points.

Operation
The integrated flow control valve accommodates changes in water pressure and thus main-tains a fairly constant temperature.
If the selected outflow temperature is not reached when the tap is fully opened, then the water flow through the device exceeds the capacity of the device (18, 21 or 24kW). In this case, the flow should be reduced with the hot water valve. There is a danger of scalding at outflow tem-peratures exceeding 43°C.

This unit is intended for use with shower heads with a low pressure loss. Mixer taps and thermostatic mixer taps should be of a design compatible with devices with flow control.
Fittings for vented systems should not be used!
Suggestion: To ensure that the minimum flow (switch-on flow) of a water- pressure operated device is reached, the pressure loss (head loss) of the device, fittings, shower head, shower hose and piping should all be considered when installing the device.
Typical pressure losses at a shower water flow of approx. 10L/min.

• Mixer tap: 0.4 – 0.8bar
• Thermostatic mixer tap: 0.3 – 0.5bar
• Shower head: 0.3 – 1.5bar.

Model Hydrex 18, 21, 24kW

The hydraulically controlled instantaneous water heater heats the water as it is flowing through the unit. As soon as a hot water tap is turned on, the heating output is switched on automati-cally after the switch-on quantity is exceeded. The temperature of the hot water is dependent on the flow rate and temperature of the incoming cold water.
With the power controller you can select one of the two power settings (E = economy, Max. = nominal power), depending on the flow.
E (Economy):
At this setting the device operates at approximately 2/3 power.
For the situation when a small amount or a low water temperature is needed, f.e. for sinks and bidets. During summer it is advisable to turn the device to the economy setting.
Max. (Full power):
At this setting the device operates at full power f.e. for bath and shower.
Model Elex 18, 21, 24kW
The electronically-regulated continuous-flow water heater with automatic performance ad-justment keeps the outflow temperature constant. This takes place irrespective of the feed temperature, up to the performance limit. The hot water outflow temperature is infinitely variable.
The device has push-buttons to switch it on and off, and arrow keys ( ↑↓ ) to adjust the heat-ing.
Blue: decrease heating performance, red: increase heating performance.
Adjust the temperature settings as desired.
Without a temperature limiter, high temperatures may be reached at draw-off points. Keep children away from the draw-off points. Danger of scalding!
The device should be isolated from the electricity supply before any work is done on live components.
Remove the fuses or isolate the device in another way.
The main water valve should be closed before any work is done on the water pipe.
If the water supply is interrupted, e.g. due to maintenance on the mains water supply, then the following steps should be undertaken before returning the device to operation:

1. Remove the fuses or isolate the device in another way.
2. Open a hot water valve connected to the device until the air is vented from both the device and the cold water supply pipe.
3. Replace the fuses or reconnect the supply.

Maintenance

Maintenance
This device does not require any maintenance by the user. Professional maintenance may only be carried out by duly authorised technical staff. Maintenance, e.g. verifying electrical safety, should only be undertaken by a qualified electrician, observing the relevant regulations (IEEE, etc.).
If faulty, never try to repair the hot water device yourself. Please contact the nearest service specialist or the party that supplied the appliance originally.
Care
The enclosure can simply be cleaned with a damp cloth. Do not use aggressive cleaners or cleaners
with a scouring effect!
Entkalkung
A service inspection should be performed by authorized and qualified technical staff every year.
De-scaling of the device during this inspection is highly recommended, especially when you live in an area with hard water exceeding 12°dH (German standard of hardness). Higher water temperature will intensify calcification. It is therefore recommended to set the device at maximum 55°C (energy-saving setting= „E“ for Hydrex in areas with extremely hard water >16°dH.
Legionella prevention
Do not use heated water as drinking water.
After prolonged shutdown of the device for example due holiday, the device should be fully heated up to the maximum temperature (tap at minimum flow) before re-using. It is recom-mended to flush the pipes for one minute.

Trouble shooting

First aid

• Check the leakage protection switch and the fuses.
• Check if any fittings or shower head are affected by the build-up of limescale or dirt.
• See also „Troubleshooting by users“.

Troubleshooting by users

Problem| Cause| Remedy
No hot water.| No electricity.| Check the leakage protection switch and the fuses in the consumer unit.
Hot water tap is not opened.| Open the hot water tap.
Although the hot water tap is fully open, the device does not
switch on.| The required minimum flow to activate the device is not reached. Dirt or limescale has built up in the aerators of the taps or in the shower head.| Increase the flow.
Clean or descale the device.
Fault elimination by a specialist

Problem| Cause| Remedy
The „Red” stage of the device
does not switch on.| The pressure on the cold wa-ter
pipe is too low.| Clean the cold water strainer.
Fouling.| Kaltwassersieb reinigen.
Although the hot water tap is
fully open, the flow controller
does not activate.| The required minimum flow
to activate the device is not
reached.| Clean the cold water strainer.
The heating system does not
switch on / No hot water.| No electricity.| Check the leakage protection switch
and the fuses in the consumer unit.
Heater faulty.| Measure the resistance of the de-
vice and replace it if necessary.
If the appliance still fails to operate after you have executed this procedure, please inform the customer
service.

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 in particularly towards the seller.
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Authoriza-| The claiming of rights under this warranty shall be subject to the submis-sion of the respective proof of purchase and the duly completed professional-card In accordance with the enclosed form. The professional-card should also be signed by the professional.
Content| NEG-Novex Grofthandelsgesellschaft fOr Elektro- and Haustechnik GmbH, Chenover Str. 5, 67117 Limburgerhof, Germany, shall 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 taking into use, incorrect operating conditions or defective maintenance or repair work.
| Normal wear and tear as for 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 CI above 150 mg/I and/or Fe above 0.2mg/i).
Duration| The warranty shall be valid for 24 months. The warranty period shall com-mence on the day on which the product is purchased. Warranty services provided shall neither prolong the warranty period nor initiate a new war- ranty period.
Claims| For Germany: For defective products the service hotline should be con- tacted. More over our website can be consulted: www.thermoflow.de
| NEG-Novex shall not be liable for transport damage. The product shall be repaired or replaced at the discretion of NEG-Novex. The functioning product shall then be sent to the buyer. NEG-Novex shall acquire owner-ship of replaced parts or products. NEG-Novex shall not be obliged to provide other services such as repair on location, dismantling of defective products, taking away defective products or installing repaired or new products.
Invalidity of warranty| Attempted repairs carried out by a customer or third party that are not authorized by NEGNovex shall invalidate the warranty. The same shall apply if parts are installed in the prod-uct or connected to the product that are not original parts from NEG-Novex.
Restriction| This warranty shall be restricted to rectification and subsequent delivery. This warranty shall not include compensation, withdrawal from the agree-ment, reduction in price or any reimbursement for consequential loss due to defects.
| This warranty does not apply to devices purchased outside Germany. The statutory provisions and delivery conditions of the national company or importers must be observed.
Customer service for Germany| The phone number of our customer service can be found on the yellow ho-tline sticker on the appliance. Please keep your duly completed Professional-Card aside. More over our website can be consulted: www.thermoflow.de

18/21/24KW

Documents / Resources

| Thermoflow Hydrex 18 kW Hydraulic Instantaneous Water [pdf] Instruction Manual
Hydrex 18 kW Hydraulic Instantaneous Water, Hydrex, 18 kW Hydraulic Instantaneous Water, Hydraulic Instantaneous Water, Instantaneous Water, Water
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References

• Warmwasser, wo und wann immer Sie es brauchen - thermoflow

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