Bosch CONDENS 5000W User manual

6720813953 (2018/12) AU
Operating Instructions
Wall mounted gas condensing boilers
Condens 5000W
ZBR 70-3 | ZBR 100-3

Table of contents
Condens 5000W – 6720813953 (2018/12)
2
Table of contents 1 Explanation of symbols and safety instructions
1.1 Explanation of symbols
Warnings
In warnings, signal words at the beginning of a warning are used to
indicate the type and seriousness of the ensuing risk if measures for
minimising danger are not taken.
The following signal words are defined and can be used in this document:
DANGER:
DANGER indicates that severe or life-threatening personal injury will
occur.
WARNING:
WARNING indicates that severe to life-threatening personal injury may
occur.
CAUTION:
CAUTION indicates that minor to medium personal injury may occur.
NOTICE:
NOTICE indicates that material damage may occur.
Important information
The info symbol indicatesimportant information where there is no risk to
people or property.
Additional symbols
Table 1
1.2 General safety instructions
HInstructions for the target group
These operating instructions are intended for the
heating system user.
All instructions must be observed. Failure to comply
with instructions may result in material damage and
personal injury, including possible loss of life.
▶ Read and retain the operating instructions (heat
source, heating controller, etc.) prior to operation.
▶ Observe the safety instructions and warnings.
HDetermined use
The product may only be used for the heating of boiler
water and for DHW heating.
1 Explanation of symbols and safety instructions . . . . . . . . . . . 2
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 2
2 Product information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Appliance types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.1 Overview of components. . . . . . . . . . . . . . . . . . . . . . . . . 4
3.2 Opening the gas tap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3.3 Opening service valves . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.4 Switch on the wall mounted gas condensing boiler . . . . . 5
3.5 Check water pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.6 Setting the maximum boiler temperature. . . . . . . . . . . . 5
3.7 Setting the user interface . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Operating the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Information menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.3 Anti-Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.4 Key lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.1 Standard shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5.2 Shutting down when there is a risk of frost. . . . . . . . . . . 7
6 Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6.1 Refilling the heating system. . . . . . . . . . . . . . . . . . . . . . . 7
6.2 Cleaning the casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7 Display rendition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.1 Display codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
7.2 A fault has occurred but no fault code is displayed . . . . . 9
8 Environmental protection/disposal . . . . . . . . . . . . . . . . . . . . . 9
Symbol Meaning
▶ a step in an action sequence
a reference to a related part in the document
• a list entry
–a list entry (second level)

Explanation of symbols and safety instructions
3
Condens 5000W – 6720813953 (2018/12)
Any other use is considered inappropriate. We assume
no liability for damage occurring due to non-permitted
use.
HIf you smell gas
A gas leak could potentially cause an explosion. If you
smell gas, observe the following rules.
▶ Prevent flames or sparks:
– Do not smoke, do not use a lighter or strike
matches.
– Do not operate any electrical switches or unplug
any equipment.
– Do not use the telephone or ring doorbells.
▶ Turn off the gas supply at the main shut-off valve or
at the gas meter.
▶ Open windows and doors.
▶ Warn your neighbours and leave the building.
▶ Prevent anyone from entering the building.
▶ Move well away from the building: call the
emergency services and the gas supplier.
HDanger to life from poisoning by flue gas
There is a danger to life from escaping flue gas.
▶Never modify any parts through which flue gas is
routed.
If flues are damaged or leaking, or if you smell flue gas,
observe the following rules.
▶ Switch off the heat source.
▶ Open doors and windows
▶ Warn your neighbours and leave the building
immediately.
▶ Prevent third parties from entering the building.
▶ Notify an approved contractor.
▶ Have any defects rectified.
HDanger to life from carbon monoxide
Carbon monoxide (CO) is a poisonous gas, which
arises during the incomplete combustion of fossil fuels
such as oil, gas or solid fuels.
Dangers arise, if carbon monoxide escapes from the
heating system due to a fault or a leak and collects
unnoticed in enclosed spaces.
You can neither see, taste nor smell carbon monoxide.
To avoid danger from carbon monoxide:
▶ Have the heating system inspected and serviced
regularly by an approved contractor.
▶ Use a CO detector, which gives an alarm in good
time if CO escapes.
▶ If you suspect a CO leak:
– Warn your neighbours and leave the building
immediately.
– Call an approved contractor.
– Have any defects rectified.
HInspection and maintenance
If there is a lack of cleaning, inspection or
maintenance, or if these are carried out incorrectly,
this may result in material damage and/or personal
injury, including possible loss of life.
▶ Have work carried out only by an approved
contractor.
▶ Have any defects rectified immediately.
▶ Have the heating system inspected once a year by
an approved contractor, and have any required
maintenance or cleaning work carried out.
▶ Have the heat source cleaned at least every two
years.
▶ We recommend that you enter into a contract
covering an annual inspection and needs-based
maintenance with an approved contractor.
HConversion and repairs
Improper modifications to the heat source or other
parts of the heating system can result in personal
injury and/or material damage.
▶ Have work carried out only by an approved
contractor.
▶ Never remove the casing of the heat source.
▶ Never carry out any modifications to the heat
source or to other parts of the heating system.
▶ Never close the outlet of the pressure relief valves.
Heating systems with DHW cylinder: During heat-
up, water can escape from the pressure relief valve
of the DHW cylinder.
HOpen flue operation
The installation location must be adequately
ventilated, if the heat source draws its combustion air
from the room.
▶ Never cover or reduce the size of ventilation
openings in doors, windows and walls.
▶ Consult a contractor to ensure that ventilation
requirements are met:
– If structural modifications are made (e.g.
replacing windows and doors)
– If devices with an air discharge to the outside are
subsequently installed (e.g. extractor fans,
kitchen fans or air conditioning units).

Product information
Condens 5000W – 6720813953 (2018/12)
4
HCombustion air/ambient air
The air in the installation location must be free of
flammable or chemically aggressive substances.
▶ Do not store or use any highly flammable or
explosive materials (paper, petrol, thinners, paints
etc.) within the vicinity of the heat source.
▶ Do not store or use any corrosive substances
(solvents, adhesives, chlorinated cleaning agents,
etc.) within the vicinity of the heat source.
Condensate tube
Condensate is produced in this wall mounted gas
condensing boiler and removed via a condensate
tube. Modification or blocking of the condensate tube
is not permitted.
2 Product information
2.1 Declaration of conformity
The design and operating characteristics of this product comply with the
European and national requirements.
The CE marking declares that the product complies with all the
applicable EU legislation, which is stipulated by attaching this
marking.
The complete text of the Declaration of Conformity is available on the
Internet: www.bosch-climate.com.au.
2.2 Appliance types
This document refers to the following appliance types:
• Condens 5000W ZBR 70-3
• Condens 5000W ZBR 100-3
The designation of the wall mounted condensing boiler comprises the
following:
• Bosch: manufacturer
• Condens 5000W ZBR-3: product name
• 70 or 100: type name
3 Commissioning
3.1 Overview of components
Fig. 1 Overview of components
[1] Control panel
[2] Pump
[3] Shut-off valve with temperature sensor
[4] Gas isolator
[5] Pressure gauge
3.2 Opening the gas tap
▶ Push in the gas isolator and turn to the left so the tap lines up with the
gas line.
Fig. 2 Opening the gas tap
0010020117-001
4 353
2
1
0010020118-001

Operating the appliance
5
Condens 5000W – 6720813953 (2018/12)
3.3 Opening service valves
▶ Open both service valves so that the tap lines up with pipework.
Fig. 3 Opening service valves
3.4 Switch on the wall mounted gas condensing boiler
▶ Put the ON/OFF switch to position “1” (figure 5, [1]).
3.5 Check water pressure
For the wall mounted gas condensing boiler to work efficiently, the
normal water pressure must be between 1.0 and 2.0 bar.
▶ Ask the installer whether a higher pressure is necessary.
▶ Read off the water pressure on the display.
▶ Top up the heating system if necessary (Chapter 6.1, page 7).
Fig. 4 Read off the water pressure
3.6 Setting the maximum boiler temperature
▶ Set the maximum boiler temperature required in the setup menu
(Chapter 4.2).
The heating and DHW operations can be switched on and off
independently of one another.
3.7 Setting the user interface
Some of the functions described in this document change when
connecting a user interface. The user interface exchanges parameters
with the wall mounted gas condensing boiler.
▶ You should therefore carefully read the operating instructions for the
user interface.
4 Operating the appliance
Fig. 5 Control panel
[1] Appliance on/off switch
[2] “Reset” key
[3] “Emissions test” key
[4] “Help” key
[5] Display
[6] “Menu” key
[7] “Down” key
[8] “Up” key
[9] Diagnostic plug
The front of the wall mounted gas condensing boiler contains a control
panel with the following elements:
Appliance on/off switch
The wall mounted gas condensing boiler can be switched on or off via the
ON/OFF switch. The power supply is not interrupted.
“reset” ckey
The wall mounted gas condensing boiler can be restarted via the key c
in the event of blocking faults (Chapter 7).
“chimney sweep” dkey
The wall mounted gas condensing boiler can be brought into operation
via key din order to carry out measurements.
“info” Lkey
The status of the wall mounted gas condensing boiler can be read out via
the Lkey
Display
Display values, settings and codes can be read off the display. If the wall
mounted gas condensing boiler is switched on via the mains plug, all
symbols appear briefly in the display.
Table 2 Readings on the display
0010020119-001
0010020120-001
Status display
Display when the wall mounted gas condensing boiler is switched on
(approx. 1 second)
20.0 Current flow temperature [°C]
p2.0 Operating pressure [bar] (display
flashes if the operating pressure is
too low)
CEmissions test mode (service
operation)
BBurner in operation
RON for central heating
SON for DHW
IPump ON
TOutside temperature display
An interlocking fault has occurred or
the wall mounted gas condensing
boiler requires a service.
0010020121-001
1 2 3 54 986 7

Operating the appliance
Condens 5000W – 6720813953 (2018/12)
6
“menu” Okey
To change the settings, you can open the setup menu via the key O.
“down” Nand “up” Mkeys
You can navigate round the various menus via the arrow keys. Press an
arrow key to change a setting or value.
Diagnostic plug
An external diagnostic tool can be connected here.
4.1 Information menu
After a few minutes of inactivity, the menu closes automatically and the
start screen is displayed.
Information on the status of the wall mounted gas condensing boiler can
be read out via the information menu. Proceed as follows:
▶ Press key Lto open the information menu.
▶ Navigate round the menu with keys Mand Nin order to read out the
required data.
▶ Press key Lto close the information menu.
Table 3 Information menu
4.2 Setup menu
The settings of the wall mounted gas condensing boiler can be read out
and modified via the setup menu. Proceed as follows:
▶ Press key Oto open the setup menu.
▶ Navigate round the menu with keys Mand N.
▶ Press the Okey to access a setting. Once the setting flashes it can be
modified.
▶ Change the setting via the keys Mand N.
▶ Press the Okey to save the setting. The setting no longer flashes.
The display values shown are the default settings.
Information menu
The text “info” is displayed for 1 second.
Maximum boiler temperature set [ °C] during
heating mode and emissions test mode.
“OFF” appears in the display when heating
mode is switched off.
No information about DHW mode is shown
here.
Display of service code.
This information is only displayed if the wall
mounted gas condensing boiler requires a
service.
For a comprehensive overview of the display
codes and corresponding explanations see
Chapter 5.
Displays an operating code or fault code.
For a comprehensive overview of the display
codes and corresponding explanations see
Chapter 7.1.
Actual operating pressure [bar].
Actual boiler temperature [ °C].
Outside temperature [ °C].
Only displayed with weather-compensated
control.
Calculated boiler temperature (setpoint) [ °C]
during heating mode R.
Actual ionisation current [μA].
Actual burner output [%] during heating mode
R.
Actual pump speed [%].
Setup menu
The text “menu” is displayed for 1 second.
Heating mode is switched on.
Setting: On, Off.
▶ Set the maximum boiler temperature
based on the heating system type.
Adjustment range: 30 - 90 °C.
Examples of settings:
• 40 °C underfloor heating system
• 75 - 85 °C radiators
• 85 - 90 °C convectors
▶ Set the maximum output of the heating
system.
The output is displayed in % when modifying
the setting.
Adjustment range: 0 - 100%.
No information about DHW mode is shown
here.
▶ Change the minimum pump speed if
required.
Adjustment range:
30 % - max. (setting max. parameter).
▶ Increase the minimum pump speed if
parts of the heating system do not
become hot enough.
Information menu

Shutdown
7
Condens 5000W – 6720813953 (2018/12)
Table 4 Setup menu
4.3 Anti-Freeze Protection
Parts of the line may freeze during the cold season. Water permanently
flows through the heating system which significantly reduces the
probability of freezing.
▶ Check whether all radiator valves are open.
▶ Press key Oto open the setup menu.
▶ Set the pump overrun time to 24 hours (Chapter 4.2).
If the wall mounted gas condensing boiler is switched off, see
Chapter 5.2.
4.4 Key lock
The setup menu can be locked to prevent the settings from being
changed by unauthorised personnel. Proceed as follows:
Activation
▶ Press the Mand Nkeys simultaneously for 5 seconds. The word
“Lock” is displayed for 5 seconds. The information menu remains
readable.
Fig. 6 Display - Lock
Disable
▶ Press the Land ckeys again simultaneously for 5 seconds to
remove the key block; the word “Lock” disappears.
5Shutdown
5.1 Standard shutdown
▶ Put ON/OFF switch in position “0”.
▶ Close the gas isolator under the wall mounted gas condensing boiler
(figure 2).
5.2 Shutting down when there is a risk of frost
If the wall mounted gas condensing boiler stays on:
▶ Set the overrun time of the pump to 24 hours (Chapter 4.2).
▶ Make sure that a sufficient flow is possible at all radiators.
If the wall mounted gas condensing boiler is switched off:
▶ Put ON/OFF switch at the user interface to position “0”.
▶ Close the gas isolator under the wall mounted gas condensing boiler.
▶ Drain the entire heating system.
6 Inspection and maintenance
The user is responsible for the general safety and clean combustion
function of the heating system.
Recommendations:
▶ To ensure the wall mounted gas condensing boiler functions
correctly, maintenance should be carried out annually by a certified
installer.
▶ To do this, conclude a maintenance and inspection contract.
6.1 Refilling the heating system
Every heating system is refilled with heating water in different ways,
depending on the water quality.
▶ You should therefore ask the installer to explain the refilling process
to you.
6.2 Cleaning the casing
▶ Only clean the casing of the wall mounted gas condensing boiler with
a damp cloth and possibly a mild detergent.
7 Display rendition
7.1 Display codes
A fault code provides information about the status of the wall mounted
gas condensing boiler. Fault codes are either shown in the display
directly or can be called up via the information menu. Proceed as follows:
▶ Press the key eto open the information menu.
▶ Navigate in the menu to the fault code level. This is either level 2 or 3.
▶ Read out the fault code and search for the corresponding meaning
(table 5).
▶ Implement the solution to eliminate the fault.
There are 3 types of code:
▶ normal operating code
▶ blocking fault code
▶ interlocking fault code
For safety reasons, the wall mounted gas condensing boiler shuts down
and locks as soon as a fault occurs. This is indicated by an illuminated
fault code. The wall mounted gas condensing boiler must be reset in
order to unlock it. Proceed as follows:
▶Holdkeycpressed down until “rE” appears in the display. In many
cases, the wall mounted gas condensing boiler will work again
normally following the reset.
Is the fault still present? Then get in touch with the installer, stating the
appliance type and fault code.
▶ Change the maximum pump speed if
required.
Adjustment range:
min. (setting min. parameter):
• Type 70 - 65%
• Type 100 - 83%
▶ Reduce the maximum pump speed if
aggravating flow noises can be heard.
Run-on time of the pump following expiry of
heating mode [Min].
Adjustment range: 1 - 60 min./24 hours.
Setup menu
10011620-001
Code Explanation Corrective measure
- - 2 0 0 The wall mounted gas
condensing boiler is in
heating mode.
- - 2 0 1 The wall mounted gas
condensing boiler is in
DHW mode.
- - 2 0 2 The wall mounted gas
condensing boiler
cannot transfer the heat
to the heating system
and waits.
• Check whether a
sufficient number of
radiator valves are open.
• Bleed radiators/
heating system.
• Reset the wall mounted
gas condensing boiler.
- - 2 0 3 The wall mounted gas
condensing boiler is in
standby mode, there is
no heat demand.

Inspection and maintenance
Condens 5000W – 6720813953 (2018/12)
8
Table 5 Operating and fault codes
- - 2 0 4 The wall mounted gas
condensing boiler
cannot transfer the heat
to the heating system
and waits.
- - 2 1 2 The sensors inside the
wall mounted gas
condensing boiler
capture a different
temperature.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
- - 2 6 0 The sensors inside the
wall mounted gas
condensing boiler
captured a different
temperature.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
- - 2 6 5 The wall mounted gas
condensing boiler is
waiting. The wall
mounted gas
condensing boiler duly
switches on in order to
satisfy the heat
demand.
- - 2 7 0 The wall mounted gas
condensing boiler
starts.
- - 2 8 3
- - 2 8 4
C E 2 0 7 The water pressure is
too low.
• Check the waterpressure
in the wall mounted gas
condensing boiler and
top up if necessary.
• Reset the wall mounted
gas condensing boiler.
C E 2 6 6 The sensors inside the
wall mounted gas
condensing boiler
captured a different
temperature.
• Check the waterpressure
in the wall mounted gas
condensing boiler and
top up if necessary.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
d 4 2 1 3 The sensors inside the
wall mounted gas
condensing boiler
capture a different
temperature.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
d 4 3 4 1
E 9 2 1 9 The sensors inside the
wall mounted gas
condensing boiler
captured a different
temperature.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
E 9 2 2 0
Code Explanation Corrective measure
E 9 2 2 4 The temperature
measured by a
thermostat in the wall
mounted gas
condensing boiler is too
high.
• Check the waterpressure
in the wall mounted gas
condensing boiler and
top up if necessary.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
E A 2 2 7 No burner ignition. • Check that the gas
isolator is open.
• Reset the wall mounted
gas condensing boiler.
E 9 2 7 6 The temperature
measured by the
sensors in the wall
mounted gas
condensing boiler is too
high.
• Check the waterpressure
in the wall mounted gas
condensing boiler and
top up if necessary.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
E 9 2 8 5
E F 3 4 5 The sensors inside the
wall mounted gas
condensing boiler
captured a different
temperature.
•Checkwhethera
sufficient number of
radiator valves are open.
• Bleed radiators and vent
heating system.
• Reset the wall mounted
gas condensing boiler.
F d 2 3 1 The power was briefly
interrupted during a
fault.
• Reset the wall mounted
gas condensing boiler.
H 0 7 The water pressure is
too low.
• Check the waterpressure
in the wall mounted gas
condensing boiler and
top up if necessary.
r E The wall mounted gas
condensing boiler is
reset.
Code Explanation Corrective measure

Environmental protection/disposal
9
Condens 5000W – 6720813953 (2018/12)
7.2 A fault has occurred but no fault code is displayed
It is possible that even though a fault code is not displayed the wall
mounted gas condensing boiler does not operate according to your
expectations. You should then check the following:
Heating system does not heat up.
▶ Check in the information menu whether a fault code is displayed and
try to remedy the fault.
▶ Check the set boiler temperature in the setup menu.
▶ Check the setting of the user interface using the operator guidance.
Is the fault still present? Then get in touch with the installer.
▶ Forward the fault code.
▶ State the appliance type and serial number. These are listed on the
right-hand side of the wall mounted gas condensing boiler.
Fig. 7 Right-hand side of the wall mounted gas condensing boiler
[1] Serial number
[2] Device type
8 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.
0010020122-001
2
1

Robert Bosch (Australia) Pty Ltd
Thermotechnology Division
1555 Centre Road
Clayton Victoria 3168
Australia
Phone: [phone]
Fax: [phone]
www.bosch-climate.com.au
New Zealand
Phone: [phone]
Fax: [phone]
www.bosch-climate.co.nz