TR8500 - Chauffe-eau instantané et chaudière BOSCH - Free user manual and instructions

Brand	Bosch
Model	TR8500
Product type	Instantaneous water heater and boiler
Power supply	Electric (mains)
Control	Electronic
Display	Digital display with backlight (blue to red)
Controls	Rotary selector and Comfort buttons (3 programmable buttons)
Temperature range	From 35 °C to 60 °C (adjustable)
Child safety	Temperature limitation at 42 °C (activation by simultaneous buttons)
Solar mode	Compatible with preheated water (symbol display)
Energy saving	eco symbol displayed during cost-effective operation
Consumption display	Energy (kWh), water (m³), cost (€) per period (year, month, last use)
Frost protection	Automatic adaptation in winter (reduce flow if necessary)
Cleaning	Damp cloth, no aggressive products or steam cleaner
Descaling	Only by a specialist
After-sales service	Contact with E and FD number on the rating plate
Warranty	According to distributor conditions; AquaStop warranty for water damage
Country of origin	Germany (Bosch)

Frequently Asked Questions - TR8500 BOSCH

How to adjust the water temperature on the Bosch TR8500?

Turn the rotary selector to adjust the temperature. You can also use the Comfort buttons to select preset temperatures (38 °C for shower, 40 °C for bath, etc.). To modify a button, press and hold it after setting the new temperature.

How to activate child safety on the water heater?

Press both Comfort buttons simultaneously (e.g., and ) for a few seconds. The child safety symbol appears and the maximum temperature is limited to 42 °C. To deactivate, repeat the operation.

What to do after a power outage?

Open the hot water tap fully and let water run until it is hot. During this time, the commissioning symbol flashes on the screen.

How to display energy and water consumption?

Press and hold the rotary selector for 5 seconds to open the menu. Select Consumption then Energy or Water. You can view values by year, month, or last use. Costs are calculated if you have entered the energy and water prices in the settings.

Is the eco symbol important?

Yes, the eco symbol indicates that the device is operating economically. To keep it permanently on, turn the rotary selector until it is fully displayed. This corresponds to optimal operation.

What to do if the screen displays 00.0 °C?

This means air has been detected in the device. The heating power is temporarily cut off. Wait a few seconds: the water heater will restart automatically.

How to use solar mode?

If preheated water from a solar system reaches the device, the solar symbol lights up on the screen. The outlet temperature may then exceed the set temperature. In this case, set the thermostatic mixing valve to a lower temperature to avoid burns.

Can I clean the device with abrasive products?

No, use only a damp cloth. Aggressive detergents, solvents, or steam cleaners are prohibited as they may damage the device.

How to contact Bosch after-sales service?

Prepare the E and FD numbers of your device (they are on the rating plate inside the front flap). Contact Bosch after-sales service (details in the manual). For an intervention, the specialist must be approved.

What to do if the water does not get hot enough in winter?

In winter, the incoming water temperature is lower. Reduce the water flow at the tap until the desired temperature is reached. If the problem persists, check that the configured temperature is not too high for the flow rate.

USER MANUAL TR8500 BOSCH

White industrial air conditioner unit with digital display showing temperature and pressure (no text or symbols on main body)

[en] Operating instructions 8

12 Eine Störung, was tun? .....7

Hand pressing down on a control panel with icons (no text or symbols visible)

Hand pressing a button with a circular arrow indicating clockwise motion (no text or symbols)

Close-up of a mechanical knob or dial with a white tool inserted, no visible text or symbols

12 Eine Störung, was tun?

WARNUNG:

Achtung!

Table of Contents 1 Important safety information

1 Important safety information....8

2 Operating instructions ..... 9

2.1 Getting to know your appliance....9
2.1.1 Operating elements and displays ..... 9
2.1.2 Display 9
2.1.3 Comfort keys ..... 9
2.1.4 Rotary selector switch ..... 9

3 Operating the appliance....9

3.1 Switching the appliance on and off.....9
3.2 Setting the water temperature ..... 9
3.3 Using the menu....10
3.4 Menu item Einstellung [setting] .... 10
3.5 Menu item Verbrauch [consumption]....10
3.6 Symbols and readouts shown in display.....11

4 Startup after power failure....12

5 Using the appliance after switching off the water supply....12

6 Saving energy....12

7 Winter operation ....12

8 Cleaning....12

9 Customer Service....12

10 Environmental protection/disposal .... 12

12 A fault, what to do? .... 13

12.1 Faults that the customer can troubleshoot himself .... 13
12.2 Faults that the customer service specialist should troubleshoot....13
12.3 Faults that are automatically remedied....13

13 Data Protection Notice .... 13

This appliance is intended for domestic use and the household environment only.

Please read these instructions carefully, then act accordingly! Store for future reference. These instructions must be included when transferring this appliance to a new owner.

WARNING:

Risk of electric shock!

Switch off the mains voltage supply immediately if a fault occurs. Immediately shut off the cold water supply to the appliance should it leak.

These installation instructions are intended for plumbers, heating engineers and electricians. All instructions must be observed. Failure to comply with instructions may result in material damage and personal injury, including possible loss of life.

▶ Read the installation instructions (heat source, heating controller, etc.).
▶ Observe the safety instructions and warnings.
▶ Observe national and regional regulations, technical rules and guidelines.
- The installation and initial start-up must be undertaken by a specialist who complies with the enclosed installation instructions. The safety information in the installation instructions must be observed. We do not accept liability for damage resulting from failure to heed these instructions and the installation instructions.
- If the output temperature of the water leaving the tap is higher than the set temperature, then this is because the supply water temperature from the domestic system is too hot, e. g. due to its being heated by a solar energy unit.
- The mixer and the warm water pipe may be hot. Please inform and instruct children appropriately.
- Do not use aggressive or abrasive cleaning detergents!
- Do not use a steam cleaner.
- The appliance is only to be descaled by a suitably qualified specialist.
- Repairs must only be carried out by an authorised technician. Improper repairs can lead to risk of serious injury to the user.

Safety of electrical devices for domestic use and similar purposes

The following requirements apply in accordance with EN 60335-2-35 in order to prevent hazards from occurring when using electrical appliances:

"This appliance can be used by children of 3 years and older, as well as by people with reduced physical, sensory or mental capabilities or lacking in experience and knowledge, if they are supervised and have been given instruction in the safe use of the appliance and understand the resulting dangers. Children shall not play with the appliance. Cleaning and user maintenance must not be performed by children without supervision."

"If the power cable is damaged, it must be replaced by the manufacturer, its customer service department or a similarly qualified person, so that risks are avoided."

Congratulations on purchasing this BOSCH appliance. You have acquired a top-quality product, which will give you a lot of enjoyment.

2 Operating instructions

2.1 Getting to know your appliance

This appliance is an electronically-regulated, pressurized continuous-flow heater for decentrally supplying hot water.

The electronic continuous-flow heater heats the water as it flows through the appliance. One or more taps can be supplied with warm water.

2.1.1 Operating elements and displays

1 Display
2 Comfort keys
3 Rotary selector switch

2.1.2 Display

The display indicates the current operating state and makes it possible to change various settings and retrieve consumption figures via the menu.

It is designed to save energy and remains dimmed when the appliance is not being used.

The background lighting and the display readout (e. g. 42 °C) light up if either the water tap is

opened, the rotary selector switch is turned, or a comfort key is pressed.

The colour of the background lighting changes depending on the set temperature – the colour ranges from blue (cold) to red (hot).

The background lighting switches off about 10 seconds after the last operation. The display readout (e.g. 42 °C) dims after approximately 2 minutes.

2.1.3 Comfort keys

Hand pointing at a control panel with arrows and icons (no readable text or symbols)

Briefly pressing the , , k e y s e n a directly select the respective temperature setting (see chapter " Setting the water temperature").

2.1.4 Rotary selector switch

Two-panel image showing a hand pressing down on a circular component with a curved arrow indicating rotation (no text or symbols)

Turning and then pressing the rotary selector switch allows you to set the selected water temperature and use the menu (see chapter "Using the menu").

3 Operating the appliance

3.1 Switching the appliance on and off

The continuous-flow heater switches on and heats the water when the warm water tap is opened. It switches off again if the water tap is closed.

3.2 Setting the water temperature

The water temperature is set by turning the rotary selector switch.

Briefly pressing the , comfort keys enables you to directly select the temperature respectively saved for each key. The display shows the set temperature as well as the associated text and symbol.

Showering

38°C approx.

Washing hands

35°C approx.

Bathing

40°C approx.

Rinsing

48 °C approx.

The preset temperatures saved for each key can be changed.

Example: How to change the "Washing hands" temperature.

- Briefly press the key.

• Turn the rotary selector switch to the desired new temperature.
• Press and hold the key. The new temperature setting is saved when the display shows the symbol and the text "Washing hands" as well as a readout of the new temperature.

i

Note: The comfort keys can also be used by several different users as individual "Temperature keys". Select any of the keys and save your own specific "wellness temperature".

i

Note: The factory setting for the water temperature after the first start-up or a power failure is less than 35^ C.

3.3 Using the menu

The appliance requires less energy to heat the water and therefore economies on costs. The consumption figures for energy, water and the resulting costs can be displayed. In order to retrieve the consumption figures, it is necessary to make some settings via the menu.

Open the menu

- Press and hold the rotary selector switch for at least 5 seconds.

Select the menu items

The following menu items can be selected:

• Turn the rotary selector switch: to switch between the menu items in the current menu level.
• Briefly press the rotary selector switch: to navigate to the next menu level or to confirm a selection.

i

Note: Following a successful entry, the selected value will be displayed for 10 seconds.

Exit the menu

• Select Zurück [back] in the menu.
  or
• Press any comfort key.

i

Note: If no entry is made within 30 seconds, then the appliance automatically exits the menu.

3.4 Menu item Einstellung [setting]

Important: The entries for Datum / Uhrzeit [date / time] and Kosten [cost] are required in order to subsequently retrieve consumption figures from Verbrauch [consumption]. If no entry is made, then the appliance only displays partial values.

Example of a menu setting

In this example, the language is to be set to Englisch [english].

The factory setting for the menu language is Deutsch [german]. To change the language to Englisch [english]:

• Press and hold the rotary selector switch for at least 5 seconds.
• Turn the rotary selector switch and select Einstellung [setting]. Press the rotary selector switch.

• Turn the rotary selector switch and select Sprache [language]. Press the rotary selector switch.

• Turn the rotary selector switch and select Englisch [english]. Press the rotary selector switch. The language is now set to English.

• Wait a moment or press the rotary selector switch.
• Turn the rotary selector switch. Select other menu items and enter settings.

or

- Press any comfort key to exit the menu.

The following settings can be selected

graph TD
    A["Press and hold for 5 seconds"] --> B["Display consumption figures, see chapter "Menu item Verbrauch [consumption"]."]
    C["Verbrauch [consumption"]] --> B
    D["Einstellung [setting"]] --> B
    E["Enterrations"] --> F["Set language to German or English"]
    G["Sprache [language"]] --> H["Enter current date and time (in order to retrieve consumption figures later on)"]
    I["Datum / Uhrzeit [date / time"]] --> H
    J["Kosten [cost"]] --> K["Enter cost for Energie [energy"] per_kWh_and_Wasser["water"] per m³ (in order to retrieve consumption figures later on)]
    L["Reset [reset"]] --> M["Delete all individual entries and reload factory default settings"]
    N["Anzeige prüfen [display test"]] --> O["Show all symbols"]
    P["Zurück [back"]] --> Q["One menu level back"]
    R["Zurück [back"]] --> S["Exit the menu"]

3.5 Menu item Verbrauch [consumption]

i

Note: If either no entry is input or if the entry is incomplete under Einstellung [setting], then only the consumption figures accumulated since initial start-up (or since last reset) are displayed: Gesamtlaufzeit [total currency].

Example of a consumption readout

To display the energy consumption:

- Press and hold the rotary selector switch for at least 5 seconds.

• Turn the rotary selector switch and select Verbrauch [consumption]. Press the rotary selector switch.
• Turn the rotary selector switch and select Energie [energy]. Press the rotary selector switch.
• Turn the rotary selector switch and select Jahr [year]. The energy consumption of the selected year is displayed in kWh.
• Turn the rotary selector switch and select Monat [month]. The energy consumption of the selected month is displayed in kWh.
• Turn the rotary selector switch and select letztes Zapfen [last usage]. The energy consumption of the last usage is displayed in kWh.
• To retrieve other consumption figures, navigate up one menu level by pressing the rotary selector switch or select Zurück [back].

or

- Press any comfort key to exit the menu.

The following consumption information can be selected

graph TD
    A["Press and hold for 5 seconds"] --> B["Display consumption figures"]
    B --> C["Average power consumption in kWh per year Jahr [year"], Monat["month"] or_letztes_Zapfen["last usage"]]
    C --> D["Average water consumption in m³ per Jahr [year"], Monat["month"] or_letztes_Zapfen["last usage"]]
    D --> E["Average cost per m³ water in euros per Jahr [year"], Monat["month"] or_letztes_Zapfen["last usage"]]
    E --> F["One menu level back"]
    F --> G["Enter settings, see chapter “Menu item Einstellung [setting"]”]
    G --> H["Exit the menu"]
    A --> I["Verbrauch [consumption"]]
    I --> J["Energie [energy"]]
    J --> K["Wasser [water"]]
    K --> L["Kosten [cost"]]
    L --> M["Zurück [back"]]
    M --> N["Einstellung [setting"]]
    N --> O["Zurück [back"]]

3.6 Symbols and readouts shown in display

The following symbols and characters may be shown in the display.

< Menu selection left, turn the rotary selector switch counterclockwise.
>Menu selection right, turn the rotary selector switch clockwise.
	Temperature in degrees celsius.
	Cost in euros.
	Economical operation.
	Power consumption in kilowatt hours.
	Water flow-rate in litres per minute.
	Wasserverbrauch in Liter.
	Water consumption in cubic metres.
	Child lock active (see chapter “Child lock”).
	Solar heating active (see chapter “Solar heated”).
	Power limit reached (see chapter “Power limit”).
	“Rinsing” water temperature active.
	“Showering” water temperature active.
	“Washing hands” water temperature active.
	“Bathing” water temperature active.

Child lock

You have the option of limiting the temperature to 42 °C, to e. g. prevent children from being accidentally scalded.

To activate the child lock:

• Simultaneously press and hold the and keys for a few seconds.
  The Kindersicherung deaktiviert [child lock deactivated] text appears for a few seconds in the display.
  The symbol lights up. The child lock is now activated.

To deactivate the child lock:

- Simultaneously press and hold the and keys for a few seconds.

The Kindersicherung deaktiviert [child lock deactivated] text appears for a few seconds in the display.

The symbol goes out. The child lock is now deactivated.

Power limit

If the set temperature is not reached because the water flowrate is too high, then lights up.

Solar heated

The appliance can be operated with pre-warmed water (for example, from a solar energy unit). If the supply water temperature is warmer than 30 °C, then the symbol collects up in the display.

WARNING:

Attention!

Scalding danger!

If the output temperature of the water leaving the tap is higher than the set temperature, then this is because the supply water temperature from the domestic system is too hot, e. g. due to its being heated by a solar energy unit.

- The thermostatic premixer in the domestic supply must be set accordingly to lower temperatures.

Saving energy eco

The symbol eco lights up if the appliance is economically operated.

- Turn the rotary selector switch until the symbol light sup.

4 Startup after power failure

- Open the warm water tap fully and allow water to flow until it is warm.

Note: During the initial start-up, the flashes in the display.

5 Using the appliance after switching off the water supply

- Switch off the appliance (unscrew the fuse in the fusebox).

- Open the warm water tap and keep it open until the air has been completely forced out of the water pipe.

- Switch the fuse back on again. The appliance is now ready to operate.

6 Saving energy

- Set the desired water temperature directly on the appliance.

Note: Mixing in of cold water at the faucet/fitting consumes unnecessary water and energy. This also accelerates calcification (scaling) of the appliance. Therefore, please always set the desired temperature directly on the continuous-flow heater.

7 Winter operation

Note: It is possible in winter that the supply temperature of the water is reduced and the required outlet temperature is no longer achieved.

- Reduce the water flow on the taps until the desired water temperature is reached.

8 C l e a n i n g

• Only wipe off the appliance using a moist cloth.
• Do not use acidic or abrasive cleaning materials.
• Do not use a steam cleaner.

9 C u s t o m e r S

We ask you to always provide the E-No. and the FD-No. of your appliance when calling in a customer service engineer. You will find the numbers on the ratings plate on the inner side of the front flap.

10 Environmental protection/disposal

Environmental protection is a fundamental corporate strategy of the Bosch Group.

The quality of our products, their economy and environmental safety are all of equal importance to us and all environmental protection legislation and regulations are strictly observed.

We use the best possible technology and materials for protecting the environment taking account of economic considerations.

Packaging

Where packaging is concerned, we participate in country-specific recycling processes that ensure optimum recycling.

All of our packaging materials are environmentally compatible and can be recycled.

Used appliances

Used appliances contain valuable materials that can be recycled. The various assemblies can be easily dismantled. Synthetic materials are marked accordingly. Assemblies can therefore be sorted by composition and passed on for recycling or disposal.

Used electrical and electronic appliances

Electrical or electronic devices that are no longer serviceable must be collected separately and sent for environmentally compatible recycling (in accordance with the European Waste Electrical and Electronic Equipment Directive).

To dispose of old electrical or electronic devices, you

should use the return and collection systems put in place in the country concerned.

Batteries must not be disposed together with your household waste. Used batteries must be disposed of in local collection systems.

11 Guarantee

The guarantee conditions for this appliance are as defined by our representative in the country in which it is sold.

Details regarding these conditions can be obtained from the dealer from whom the appliance was purchased. The bill of sale or receipt must be produced when making any claim under the terms of this guarantee.

In addition to the warranty claims against the vendor arising from the sales contract and in addition to our appliance guarantee, we offer compensation in accordance with the following conditions:

• If water damage is caused due to a malfunction of our AquaStop system, then we shall compensate damages to private consumers.
• The liability guarantees applies for the service life of the appliance.
• The prerequisite of the guarantee claim is that the appliance is correctly installed and connected with AquaStop in accordance with our instructions. Our guarantee does not extend to cover defective supply piping or faucets up to the AquaStop connection.
• In general, you neither need to supervise appliances with AquaStop while they are operating nor do you need to shut off the water supply afterward by closing the water tap. The water tap only needs to be shut off during longer absences from your residence, e.g. when going on holidays lasting several weeks.

Subject to change without notice.

12 A fault, what to do?

WARNING:

Attention!

Repairs must only be carried out by an authorised technician. Improper repairs can lead to risk of serious injury to the user.

If your appliance does not operate as required, it is often due to a very minor problem. Please check whether you can remedy the fault yourself by using the following guidelines. You will save yourself the costs of an unnecessary visit by customer service personnel.

12.1 Faults that the customer can troubleshoot himself

Fault Cause Solution
Water flow-rate is too low. The filter in either the water tap or the showerhead is clogged.		Remove the filter and either clean it or descale it.
A high water temperature is set, but it is not reached.	The continuous-flow heater is connected to a thermostatically-controlled water tap.	Set the temperature on the continuous-flow heater to “60 °C”.
The display is blank.	The fuse in the fusebox has tripped/blown.	Check the fuse in the fusebox.
The water is not warm.	The supply temperature has reduced.	Reduce the water flow on the taps until the desired water temperature is reached.
The temperature of the water leaving the tap is higher than the set temperature.	The temperature of the water supplying the continuous-flow heater is higher than the set temperature (e. g. due to pre-warmed water supplied from a solar water heater).	The thermostatic premixer in the domestic supply must be set accordingly to lower temperatures.
[1025] Lights up in the display.	The power limit has been reached.	Reduce the water flow at the tap or lower the temperature setting on the appliance.

If the fault could not be eliminated, please call customer service.

12.2 Faults that the customer service specialist should troubleshoot

Fault Cause Solution
Water flow-rate is too low despite cleaning of filter using the water tap or showerhead.	A filter in the appliance is clogged. Get a servicing expert to clean the appliance.
The display is blank despite fault-free function of the mains electricity supply fuses.	There is a fault in the appliance. Get a servicing expert to check the appliance.
The display shows the error code “E..”.	There is a fault in the appliance.	Get a servicing expert to check the appliance.

12.3 Faults that are automatically remedied

Fault Cause Solution
The display shows “00,0°C”.	The air sensor in the appliance detects air in the water and momentarily switches the heating element off.	After a few seconds, the continuous-flow heater automatically goes back into operation.

13 Data Protection Notice

We, Bosch Thermotechnology Ltd., Cotswold Way, Warndon, Worcester WR4 9SW, United Kingdom process product and installation information, technical and connection data, communication data, product registration and client history data to provide product functionality (art. 6 (1) sentence 1 (b)

GDPR), to fulfil our duty of product surveillance and for product safety and security reasons (art. 6 (1) sentence 1 (f) GDPR), to safeguard our rights in connection with warranty and product registration questions (art. 6 (1) sentence 1 (f) GDPR) and to analyze the distribution of our products and to provide individualized information and offers related to the product (art. 6 (1) sentence 1 (f) GDPR). To provide services such as sales and marketing services, contract management, payment handling, programming, data hosting and hotline services we can commission and transfer data to external service providers and/or Bosch affiliated enterprises. In some cases, but only if appropriate data protection is ensured, personal data might be transferred to recipients located outside of the European Economic Area. Further information are provided on request. You can contact our Data Protection Officer under:

Data Protection Officer, Information Security and Privacy (C/ISP), Robert Bosch GmbH, Postfach 30 02 20, 70442 Stuttgart, GERMANY. You have the right to object, on grounds relating to your particular situation or where personal data are processed for direct marketing purposes, at any time to processing of your personal data which is based on art. 6 (1) sentence 1 (f) GDPR. To exercise your rights, please contact us via [e-mail] To find further information, please follow the QR-Code.

2.1 Initiation....15

Hand pressing a button on a control panel with icons (no text or symbols visible)

Two-panel image showing a hand pressing down on a circular component with a curved arrow indicating rotation (no text or symbols)

Hand pressing down on a control panel with icons for shower, sink, and water drop (no text or symbols)

Two-panel image showing hands operating a rotary switch mechanism, one with black arrows indicating clockwise rotation (no text or symbols)

Hand pressing down on a control panel with icons for shower, drain, and sink (no text or symbols visible)

Two-panel image showing a hand pressing down on a circular component with a curved arrow indicating rotation (no text or symbols)

Hand pressing a button on a control panel (no text or symbols visible)

Two-panel image showing a hand pressing down on a circular component with a curved arrow indicating rotation (no text or symbols)

Hand pointing at a control panel with icons (no text or symbols visible)

Kratak pritisak na tastere , , , vam omogućava da direktno izaberete odgovarajuće podešavanje temperature (vidite poglavlje " Podešavanje temperature vode").

2.1.4 Rotacioni prekidač za odabir

Two-panel image showing a hand pressing down on a circular component with a curved arrow indicating rotation (no text or symbols)

Okretanje i pritiskanje rotacionog prekidača za odabir omogućava vam da podesite željenu temperaturu vode i da koristite meni (vidite poglavlje “Korišćenje menija”).

Hand pointing at a control panel with icons for shower, fan, and door (no text or symbols visible)

Two-panel image showing a hand pressing down on a circular component with an arrow indicating rotation (no text or symbols present)

Hand pointing at a control panel with icons (no text or symbols visible)

Two-panel image showing a hand pressing down on a circular component with a curved arrow indicating rotation (no text or symbols)