STIEBEL ELTRON DHF 13 C-AU, DHF 15 C-AU Operating And Installation

OPERATING AND INSTALLATION
Hydraulically controlled instantaneous water heater
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SPECIAL INFORMATION
OPERATION
1. General information �����������������������������������������2
1.1 Safety instructions ����������������������������������������������� 2
1.2 Other symbols in this documentation ����������������������� 2
1.3 Units of measurement ������������������������������������������ 2
2. Safety ���������������������������������������������������������� 3
2.1 Intended use ������������������������������������������������������ 3
2.2 General safety instructions ������������������������������������ 3
2.3 CE designation ��������������������������������������������������� 3
2.4 Test symbols ������������������������������������������������������ 3
3. Appliance description ���������������������������������������3
4. Settings �������������������������������������������������������3
4.1 Recommended tap/valve settings ���������������������������� 4
5. Cleaning, care and maintenance ���������������������������4
6. Troubleshooting ����������������������������������������������4
INSTALLATION
7. Safety ���������������������������������������������������������� 5
7.1 General safety instructions ������������������������������������ 5
7.2 Instructions, standards and regulations �������������������� 5
8. Appliance description ���������������������������������������5
8.1 Standard delivery ����������������������������������������������� 5
9. Preparations �������������������������������������������������� 5
9.1 Installation site ��������������������������������������������������� 5
9.2 Water installation ������������������������������������������������ 5
10. Installation ����������������������������������������������������6
10.1 Standard installation �������������������������������������������� 6
10.2 Alternative installation methods������������������������������ 8
10.3 Completing the installation ������������������������������������ 8
11. Commissioning �����������������������������������������������9
11.1 Initial start-up ���������������������������������������������������� 9
11.2 Recommissioning ������������������������������������������������ 9
12. Shutting down the system ����������������������������������9
13. Troubleshooting �������������������������������������������� 10
14. Maintenance ������������������������������������������������ 10
15. Specification ������������������������������������������������ 11
15.1 Dimensions and connections ��������������������������������� 11
15.2 Wiring diagram ������������������������������������������������� 11
15.3 DHW output ������������������������������������������������������ 11
15.4 Pressure drop ��������������������������������������������������� 11
15.5 Data table �������������������������������������������������������� 12
WARRANTY
ENVIRONMENT AND RECYCLING
SPECIAL INFORMATION
- The appliance may be used by children aged 8 and up and persons with reduced physical, sen­sory or mental capabilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the result­ing risks. Children must never play with the ap­pliance. Children must never clean the appliance or perform user maintenance unless they are supervised.
- Ensure the appliance can be separated from the power supply by an isolator that disconnects all poles with at least 3mm contact separation.
- Secure the appliance as described in chapter "In­stallation/ Installation".
- Observe the maximum permissible pressure (see chapter "Specification/ Data table").
- Drain the appliance as described in chapter "In­stallation/ Maintenance/ Draining the appliance".
OPERATION
General information
ENGLISH
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OPERATION
1. General information
The chapters "Special Information" and "Operation" are intended for both the user and qualified contractors.
The chapter "Installation" is intended for qualified contractors.
Note
Read these instructions carefully before using the appli­ance and retain them for future reference. Pass on the instructions to a new user if required.
1.1 Safety instructions
1.1.1 Structure of safety instructions
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KEYWORD Type of risk Here, possible consequences are listed that may result from failure to observe the safety instructions.
Steps to prevent the risk are listed.
1.1.2 Symbols, type of risk
Symbol Type of risk
Injury
Electrocution
Burns (burns, scalding)
1.1.3 Keywords
KEYWORD Meaning
DANGER Failure to observe this information will result in serious
injury or death.
WARNING Failure to observe this information may result in serious
injury or death.
CAUTION Failure to observe this information may result in non-seri-
ous or minor injury.
1.2 Other symbols in this documentation
Note
General information is identified by the symbol shown on the left.
Read these texts carefully.
Symbol Meaning
Material losses (appliance damage, consequential losses and environmen­tal pollution)
Appliance disposal
This symbol indicates that you have to do something. The ac-
tion you need to take is described step by step.
1.3 Units of measurement
Note
All measurements are given in mm unless stated oth­erwise.
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OPERATION
Safety
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2. Safety
2.1 Intended use
This appliance is intended for domestic use. It can be used safely by untrained persons. The appliance can also be used in a non-do­mestic environment, e.g. in a small business, as long as it is used in the same way.
This pressure appliance is designed to heat DHW. The appliance can supply one or more draw-off points.
Any other use beyond that described shall be deemed inappropri­ate. Observation of these instructions and of instructions for any accessories used is also part of the correct use of this appliance.
2.2 General safety instructions
CAUTION Burns During operation, the tap can reach temperatures in ex­cess of 60 °C. There is a risk of scalding at outlet temperatures in ex­cess of 43 °C.
!
WARNING Injury The appliance may be used by children aged8 and up and persons with reduced physical, sensory or mental capa­bilities or a lack of experience and know-how, provided that they are supervised or they have been instructed on how to use the appliance safely and have understood the resulting risks. Children must never play with the appliance. Children must never clean the appliance or perform user maintenance unless they are supervised.
!
Material losses
Protect the appliance and its tap against frost.
2.3 CE designation
The CE designation shows that the appliance meets all essential requirements according to the:
- Low Voltage Directive
- Electromagnetic Compatibility Directive
- The maximum permissible mains impedance is indicated in chapter "Specification".
2.4 Test symbols
See type plate on the appliance
Information for Australia/New Zealand:
Installation complies with standard AS/NZS 3500.4.
3. Appliance description
The hydraulically controlled instantaneous water heater heats water as it flows through the appliance. When a tap is opened, the heating output starts automatically as soon as the start-up vol­ume has been exceeded (see chapter "Specification / Data table"). Adjust the DHW flow rate and temperature by mixing it with cold water at the tap.
You can choose between 2 output stages. In addition, 2 output stages are controlled hydraulically depending on the flow rate.
The flow rate controller compensates for pressure fluctuations, thereby ensuring largely stable temperatures. The controller limits the throughput, thereby ensuring an adequate increase in the DHW temperature at all times.
Heating system
The tubular heater heating system has a pressure-tested copper cylinder. The heating system is suitable for soft water areas (for application range, see chapter "Specification / Data table").
4. Settings
D0000042703
1 2
1 Low power
This setting is suitable, for example, for washing your hands. At low flow rates, half the heating output is applied.
2 Full power
This setting is suitable, for example, for baths, showers and washing up. At low flow rates, half the heating output is ap­plied; at higher flow rates, the full heating output.
Switch the output selector to the required position.
For start volumes, see chapter "Specification/ Data table/ On".
OPERATION
Cleaning, care and maintenance
ENGLISH
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4.1 Recommended tap/valve settings
Note
If the outlet temperature is not high enough when the draw-off valve is fully open at full power, then more water is flowing through the appliance than can be heated by the heating system (appliance is at its output limit).
Reduce the water volume at the draw-off valve.
Low draw-off rate = high outlet temperature
High draw-off rate = low outlet temperature
Recommended settings when using thermostatic valve
Set the output selector to full power.
Twin lever tap
Output stage Application range
Low power Washbasin Full power Bath, shower, sink
Add cold water if the temperature is too high when the tap is
fully open.
Mono lever mixer
Output stage Application range
Full power All
Turn the tap lever to the highest temperature.Fully open the tap.Increase the outlet temperature by closing the tap slowly.Reduce the outlet temperature by adding cold water or open-
ing the tap further, if possible.
Following an interruption of the water supply
!
Material losses
Following an interruption in the water supply, the appli­ance must be recommissioned by carrying out the fol­lowing steps, in order to prevent damage to the tubular heater heating system.
Disconnect the appliance from the power supply by
removing the fuses/tripping the MCBs.
Open the tap for one minute until the appliance and
its upstream cold water inlet line are free of air.
Switch the mains power back ON again.
5. Cleaning, care and maintenance
Never use abrasive or corrosive cleaning agents. A damp
cloth is sufficient for cleaning the appliance.
Check the taps regularly. Limescale deposits at the spouts
can be removed using commercially available descaling agents.
6. Troubleshooting
Problem Cause Remedy
The appliance will not start despite the DHW valve being fully open.
There is no power.
Check the fuses/MCBs in your fuse box/distribu­tion panel.
The flow rate is too low for switching on the heating output. The aerator in the tap or the shower head is scaled up or contaminated.
Clean and/or descale the aerator or shower head.
If you cannot remedy the fault, notify your qualified contractor. To facilitate and speed up your enquiry, please provide the serial number from the type plate (000000-0000-00000):
Nr.: 000000-0000-00000
D0000042704
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INSTALLATION
Safety
INSTALLATION
7. Safety
Only a qualified contractor should carry out installation, commis­sioning, maintenance and repair of the appliance.
7.1 General safety instructions
We guarantee trouble-free function and operational reliability only if original accessories and spare parts intended for the appliance are used.
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Material losses
Observe the maximum inlet temperature. Higher tem­peratures may damage the appliance. You can limit the maximum inlet temperature by installing a central ther­mostatic valve.
7.2 Instructions, standards and regulations
Note
Observe all applicable national and regional regulations and instructions.
Protection rating IP 24 (splashproof) can only be guaranteed with a correctly fitted cable grommet.
8. Appliance description
8.1 Standard delivery
The following are delivered with the appliance:
- Wall mounting bracket
- Installation template (in the centre section of these instructions)
- 2 extensions
- 2 caps
- 2 tees
- 2 plugs
- 8 flat gaskets
- Strainer
- Plastic profile washer
- 2 cover guides (for installation on finished walls)
9. Preparations
9.1 Installation site
!
Material losses
Install the appliance in a room free from the risk of frost.
Always install the appliance vertically near the draw-off
point.
The appliance is suitable for undersink and oversink installations.
Note
Mount the appliance on the wall. The wall must have
a sufficient load-bearing capacity.
Undersink installation
D0000042705
1 2
1 Cold water inlet 2 DHW outlet
Oversink installation
D0000042706
12
1 Cold water inlet 2 DHW outlet
9.2 Water installation
- Never operate with preheated water.
- A safety valve is not required.
Flush the water line thoroughly.Ensure that the flow rate (see chapter "Specification/ Data
table", On) for switching on the appliance is achieved. In­crease the mains water pressure if the required flow rate is not achieved with the draw-off valve fully opened.
Taps/valves
Use appropriate pressure taps. Open taps are not permitted.
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