Bosch CONDENS 5000W User manual

6720813952 (2019/02) AU
Installation and maintenance instructions
Wall mounted gas condensing boilers
Condens 5000W
ZBR 70-3 | ZBR 100-3

Table of contents
Condens 5000W – 6720813952 (2019/02)
2
Table of contents
1 Explanation of symbols and safety instructions . . . . . . . . . . . 3
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 3
2 Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Appliance types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Data plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5 Changing over the gas type . . . . . . . . . . . . . . . . . . . . . . . 5
2.6 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.7 Removing the casing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.8 Anti-Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.9 Pump test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.10 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.11 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.12 Wiring diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.13 Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.14 Gas specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.15 Hydraulic resistances. . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.16 Residual head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5 Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.1 Important information . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.3 Unpacking the wall mounted gas condensing
boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.4 Check gas type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.5 Mounting the wall mounted gas condensing boiler . . . . 11
5.6 Remove the protective caps . . . . . . . . . . . . . . . . . . . . . 12
5.7 Connecting on the water and gas side . . . . . . . . . . . . . 12
5.8 Mounting the connection set (accessory) . . . . . . . . . . 12
5.8.1 Installing the gas isolator . . . . . . . . . . . . . . . . . . . . . . . . 12
5.8.2 Mounting the connection set. . . . . . . . . . . . . . . . . . . . . 13
5.9 Connection of heating pipes (without connection
set) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.9.1 Gas-side connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.9.2 Mounting the pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.10 Install the low loss header . . . . . . . . . . . . . . . . . . . . . . . 14
5.11 Installing the siphon. . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.12 Connecting the condensate drain . . . . . . . . . . . . . . . . . 15
5.13 Expansion vessel connection . . . . . . . . . . . . . . . . . . . . 15
5.14 Mounting the back panel insulation . . . . . . . . . . . . . . . 15
5.15 Connection of air supply and flue system. . . . . . . . . . . 15
5.15.1 Flue terminal positions . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.1 Control principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Connection of the control units. . . . . . . . . . . . . . . . . . . 17
6.3 Installation of the strain relief . . . . . . . . . . . . . . . . . . . . 17
6.4 Connecting the on/off room temperature-
dependent control unit . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.5 Connecting the modulating controller . . . . . . . . . . . . . 18
6.6 Connecting an external switching contact . . . . . . . . . . 18
6.7 Connecting an outside temperature sensor
(accessory) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.8 Connecting a cylinder temperature sensor. . . . . . . . . . 18
6.9 Connecting the 3-way valve . . . . . . . . . . . . . . . . . . . . . 18
6.10 Connecting the function module (accessory) . . . . . . . 18
6.11 Connecting the cylinder primary pump . . . . . . . . . . . . 19
6.12 Connecting the hot water circulation pump . . . . . . . . . 19
6.13 Connecting the pump . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.14 Fit mains plug (if not preassembled) . . . . . . . . . . . . . . 19
7 Operating the appliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.1 Information menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.2 Setup menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3 Flue gas inspector mode . . . . . . . . . . . . . . . . . . . . . . . . 21
7.4 „Fault history“ menu . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7.5 Key lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.1 Filling the heating system . . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Purging the gas line . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.3 Inspecting the flue system. . . . . . . . . . . . . . . . . . . . . . . 22
8.4 Adjusting the output . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.5 Setting the maximum boiler temperature . . . . . . . . . . 22
8.6 Adjusting the pump connection set . . . . . . . . . . . . . . . 22
8.7 Testing the gas supply pressure . . . . . . . . . . . . . . . . . . 22
8.8 Measure gas/air ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.9 Measure the CO and CO2 content . . . . . . . . . . . . . . . . 24
8.10 Measure ionisation current . . . . . . . . . . . . . . . . . . . . . . 24
8.11 Testing for gas leaks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.12 Check the operating characteristics of the wall
mounted gas condensing boiler . . . . . . . . . . . . . . . . . . 25
8.13 Final steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.14 Inform the user. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.15 Commissioning report. . . . . . . . . . . . . . . . . . . . . . . . . . 25
9 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.1 Standard shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.2 Shutting down when there is a risk of frost . . . . . . . . . 25
10 Environmental protection/disposal . . . . . . . . . . . . . . . . . . . . 26
10.1 Environmental protection and disposal . . . . . . . . . . . . 26
11 Inspection and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.1 Important information . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.2 Remove the gas-air unit . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.3 To clean the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
11.4 Cleaning the heat exchanger. . . . . . . . . . . . . . . . . . . . . 27
11.5 Checking the ignition system . . . . . . . . . . . . . . . . . . . . 27
11.6 Clean condensate trap/siphon . . . . . . . . . . . . . . . . . . . 28
11.7 Cleaning the condensate pan . . . . . . . . . . . . . . . . . . . . 29
11.8 Testing the gas supply pressure . . . . . . . . . . . . . . . . . . 29
11.9 Measure gas/air ratio. . . . . . . . . . . . . . . . . . . . . . . . . . . 29
11.10 Measure CO/CO2 content. . . . . . . . . . . . . . . . . . . . . . . 30
11.11 Check flue gas pressure-relief valve . . . . . . . . . . . . . . . 30
11.12 Measure ionisation current . . . . . . . . . . . . . . . . . . . . . . 31
11.13 Testing for gas leaks. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11.14 Check for correct operating characteristics. . . . . . . . . 31
11.15 Inspection and maintenance reports . . . . . . . . . . . . . . 31
12 Display codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
12.1 Code types in the display . . . . . . . . . . . . . . . . . . . . . . . 32
12.2 Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
12.3 Operating and fault codes. . . . . . . . . . . . . . . . . . . . . . . 32

Explanation of symbols and safety instructions
3
Condens 5000W – 6720813952 (2019/02)
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 canbe 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 indicates important information where there is no risk to
people or property.
Additional symbols
Table 1
1.2 General safety instructions
HNotes for the target group
These installation instructions are intended for gas,
plumbing, heating and electrical contractors. All
instructions must be observed. Failure to comply with
instructions may result in material damage and
personal injury, including danger to life.
 Read the installation instructions (heat source,
heating controller, etc.) before installation.
 Observe the safety instructions and warnings.
 Observe national and regional regulations,
technical rules and guidelines.
 Record all work carried out.
If you are in any doubt contact the Robert Bosch
technical hotline on:
1300 30 70 37 AU or 0800 54 33 52 NZ
HDetermined use
The product may only be used in a domestic situation
for the heating of central heating water and for DHW
heating in closed-loop DHW and heating systems.
Any other use is considered inappropriate. Any
damage that may result from misuse is excluded from
liability.
This appliance is not suitable to be used as a pool
heater.
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.
 Ensure that flues and gaskets are not damaged.
HRisk to life from poisoning by flue gas due to
inadequate combustion
There is a risk to life from escaping flue gas. If flues are
damaged or leaking, observe the following rules.
 Close off the fuel supply.
 Open windows and doors.
 If necessary, warn your neighbours and leave the
building.
 Prevent anyone from entering the building.
 Rectify any damage to the flue immediately.
 Ensure that there is an adequate combustion air
supply.
 Do not cover or reduce the size of ventilation
apertures in doors, windows and walls.
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)

Product Information
Condens 5000W – 6720813952 (2019/02)
4
 Ensure that there is an adequate combustion air
supply, including for any heat sources, which have
been installed at a later date, e.g. if there are
extractor fans, kitchen fans or air conditioning units
with an air discharge outside.
 Never operate the product if there is an insufficient
combustion air supply.
Open flued Appliance
 Do not use an unlined Masonry chimney as the flue
for this appliance.
HInstallation, commissioning and maintenance
Installation, commissioning and maintenance must
only be carried out by an approved contractor.
 Carry out a gas tightness test after completing work
on gas-carrying components.
 In the case of open flue operation:Ensure that the
installation location meets the ventilation
requirements.
 Only use original spares.
HElectrical work
Electrical work must only be carried out by contractors
qualified in electrical installation.
Before starting electrical work:
 Isolate all poles of the mains voltage and secure
against reconnection.
 Using suitable means, test that the mains voltage is
disconnected.
 Also observe the connection diagrams of other
system components.
HHandover to the user
When handing over, instruct the user how to operate
the heating system and inform the user about its
operating conditions.
 Explain how to operate the heating system and draw
the user's attention to any safety relevant action
 Explain that conversions and repairs must only be
carried out by a competent person.
 Point out the need for inspections and maintenance
for safe and environmentally-compatible operation.
 Leave the installation instructions and the
operating instructions with the user for
safekeeping.
 Do not spray aerosols in the vicinity of this
appliance while in operation.
 Do not use or store flammable materials in or near
this appliance.
 Do not place articles on or against this appliance.
 Do not modify this appliance.
2ProductInformation
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
The appliance types stated may not be available in your country.
For more information on availability, contact the manufacturer.
You will find the address on the back cover of these instructions.
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
2.3 Data plate
The data plate is on the top of the wall mounted gas condensing boiler to
the left of the flue gas adapter (figure 4, [8]). The data plate contains
the serial number, gas group classification and approvals.

Product Information
5
Condens 5000W – 6720813952 (2019/02)
2.4 Scope of delivery
The wall mounted condensing boiler is supplied ex works ready
assembled.
 Check that the delivery is complete and undamaged.
Fig. 1 Scope of delivery
[1] Wall mounted gas condensing boiler
[2] Mounting bracket
[3] Technical documentation
[4] Condensate trap
[5] Condensate hose
[6] Screw, washer, rawl plug (2 × )
[7] Screw fitting with gasket (2 × )
[8] Strain relief (6 × )
2.5 Changing over the gas type
This appliance is only certified for use with Natural Gas in AU/NZ, and is
approved for the gas type specified on the data plate. If the wall mounted
gas condensing boiler can be converted for another gas type,
corresponding information will be provided in the gas data
(chapter 2.14, page 10).
2.6 Accessories
A wide range of accessories is available for these wall mounted gas
condensing boilers. Please contact the manufacturer for further details.
You will find the relevant addresses on the back cover of these
instructions.
2.7 Removing the casing
 Undo locking screws [1.].
 Pull the 2 click fasteners on the underside of the control panel down
[2.].
 Remove the casing [3.].
Fig. 2 Casing removal
2.8 Anti-Freeze Protection
NOTICE:
System damage.
The central heating system may freeze up during severe frost due to: the
failure of the electricity supply, inadequate gas supply or an appliance
error.
 Install the boiler in a frost-free room.
 Drain off the water from the central heating system if it will be out of
operation for an extended period.
The wall mounted gas condensing boiler is equipped with integral frost
protection. This means that the wall mounted gas condensing boiler
requires no external frost protection system. The frost protection system
switches the wall mounted gas condensing boiler off at a boiler
temperature of 7 °C and a boiler temperature of 15 °C. The wall mounted
gas condensing boiler does not protect the heating system from frost.
0010025081-001
2
4
3
8
1
7
6
5
0010020123-001
1.
1.
2.
3.
3.

Product Information
Condens 5000W – 6720813952 (2019/02)
6
2.9 Pump test
The pump starts automatically for 10 seconds every 24 hours if the
pump is not in use for prolonged periods. This procedure prevents the
pump from seizing.
2.10 Measurements
Fig. 3 Dimensions [mm]
[1] Concentric flue adaptor, Ø 100/150 mm coupling end
[2] Ventilation panel
[3] Gas connection for wall mounted gas condensing boiler, R 1'' male
thread
[4] Heating return, G 1½ '' screw fitting with female thread
[5] Connection set for return, G 1½ '' male thread with flat seal
[6] Condensate pipe, Ø external diameter 24 mm
[7] Connection set for gas connection, R 1" female thread
[8] Connection set for flow, G 1½ '' male thread with flat gasket
[9] Heating flow, G 1½ '' screw fitting with female thread
0010009975-001
520
= = 469
1326
980
140
156
330
130
= = 40
6
35
138
4
21
1
9
5
6
8
6
7
3

Product Information
7
Condens 5000W – 6720813952 (2019/02)
2.11 Product overview
Fig. 4 Condens 5000W ZBR-3 with connection set
0010009976-001
3
5
6
8
15
17
18
19
20
21
22
23
24
26
25
28
30
29
3127
16
10 11 12 13 149
4
7
2
32
33
30
1
34
Wall mounted gas condensing boiler:
[1] Control panel
[2] Terminal strip
[3] Condensate pan
[4] Quick lock
[5] Auto air vent
[6] Air intake pipe
[7] Venturi nozzle
[8] Data plate
[9] Gas valve
[10] Combustion air connection
(concentric)
[11] Flue gas connection
[12] Flue gas testing point
[13] Flue gas temperature sensor
[14] Incoming air testing point
[15] Cap, combustion air connection
(parallel)
[16] Flue pipe
[17] Fan
[18] Burner
[19] Ignition device
[20] Flow temperature sensor
[21] Safety temperature sensor
[22] Pressure sensor
[23] Heat Exchanger
[24] Return temperature sensor
[25] Boiler ID module (HCM)
[26] Locking screw
[27] Condensate trap
Connection set (accessories):
[28] Pump
[29] Drain & fill valve (DFV)
[30] Service valve
[31] Gas isolator
[32] Drain cock
[33] Manometer
[34] Pressure Relief Valve

Product Information
Condens 5000W – 6720813952 (2019/02)
8
2.12 Wiring diagram
Fig. 5 Wiring diagram
[1] Fan
[2] Reactor
[3] Hot surface igniter
[4] Gas valve type 70
[5] Gas valve type 100
[6] Boiler ID module (HCM)
[7] Burner control unit
[8] Control panel
[9] Pressure sensor
[10] Return temperature sensor
[11] Flue gas temperature sensor (ex works, Switzerland only)
[12] Flow temperature sensor
[13] Safety temperature sensor
[14] Flame sense electrode
[15] Earth
[16] Turquoise - no function
[17] Grey - no function
[18] Blue - outside temperature sensor
[19] Red - external switching contact
[20] Orange - modulating temperature controller
[21] Green - on/off room temperature-dependent controller
[22] Pump control signal PWM
[23] ON/OFF switch
[24] Grey - no function
[25] White - power supply 230 V AC, 50 Hz, mains plug
[26] Orange - power supply of the 1st function module 230 V AC
[27] Purple - no function
[28] Green - pump connection set or external
[29] Pump connection set, external pump 230 V AC, max. 250 W
0010009977-002
D17 D13 D16
C4 C3 C8 C7 A8 A7 A2 A1 A4 A5
G6 G5
F2 F1
0V24V
13 12 11 10 9 8 7 6 5 4 3 2 1
12 34
0 VAC
24 VAC
PEPE
10
F2 F1
PE
F4
F3
PE
G2 G1
PE
L
PE
N
A9
C10
B12
B13
C9
1
2
3
B16
B17
C1
C2
C14
C17
D9
D10
A6
B2
A11
A12
D14
D12
D11
D1
D3
C16
C15
1
2
3
4
5
1
2
3
4
5
A14
A13
A16
A15
6
7
24 VAC
0 VAC
24 VAC
10 VAC
10 VAC
230 VAC
230 VAC
24 V RAC 1
2
3
4
5
D6
D7
24 VAC
1
2
3
4
D5
D8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
E1
E2
E3
E4
E5
E6
E7
E8
B7 B3 B6
HCM
B14
B15 11
1
2
3
4
5
8
7
9
10
12
13
14 15
29
16 17
19
20 21 26 27
18
23
22
24 25 28
6

Product Information
9
Condens 5000W – 6720813952 (2019/02)
2.13 Specifications
Table 2 Specifications
The information in brackets corresponds to the information on the data plate.
Type 70 Type 100
General Information Unit
Rated output G20 (50/30 °C) [Pncond] kW 14.3 – 69.5 20.8 – 99.5
Rated output G20 (80/60 °C) [Pn]kW 13.0 – 62.6 19.0 – 94.5
Rated input G20 [Qn(Hi)] kW 13.3 – 64.3 19.3 – 96.5
Nominal input NG/G20 MJ/h 257 386
Efficiency G20 (37/30 °C) partial load 30% in accordance with EN 15502 % 107.8 107.9
Efficiency G20 (80/60 °C) full load %97.4 97.0
Standby loss in accordance with EN 15502 % 14 9
Seasonal efficiency, heating curve (75/60 °C) %106.8 106.7
Seasonal efficiency, heating curve (40/30 °C) % 109.4 109.5
Pump run-on time min 5 5
Residual head of fan (pmax) Pa 130 220
IP classification [IP rating] IP X4D (B23, B33: X0D)
Appliance class in accordance with EN 15502 B23, B33, C13(x), C33(x), C43(x), C53(x), C83(x), C93(x)
Temperature classification in accordance with EN 14471 T120
Appliance fuse 230 V, 5AF
Mains voltage, frequency [U] 230 V, 50 Hz
Electrical power consumption (without a pump connection set),
standby / partial load / full load
W 6 / 18 / 82 6 / 25 / 155
Permissible ambient temperature °C 0 - 40
Maximum flow temperature [Tmax]°C90
Maximum permissible water pressure of the wall mounted gas condensing
boiler [PMS]
bar 4
Maximum condensate accumulation rate l/h 7.6 11.0
Connections
Flue gas connection/concentric air supply mm 100/150
Heating flow/return pipe (wall mounted gas condensing boiler) inch G1½
Gas connection (wall mounted gas condensing boiler) inch R1
Condensate drain (flexible drain hose) mm 24
Emission levels in accordance with EN 13384
CO2content with natural gas G20, partial load/full load %8.9 / 9.3 8.9 / 9.3
CO output G20 at full load ppm 57 100
NOxemission G20 at full load in accordance with EN 15502 (average) mg/kWh 27 48
NOxclass 5
Flue gas mass flow rate at max./min. rated output g/s 29.8 43.8
Flue gas temperature at 80/60 °C, partial load/full load °C 57 / 62 57 / 68
Flue gas temperature at 50/30 °C, partial load/full load °C 34 / 39 34 / 53
Differential pressure gas/air (with partial load) Pa - 5
Dimensions and weight
Height x width x depth mm 980 x 520 x 465
Height x width x depth incl. connection set mm 1300 x 520 x 465
Weight kg 70
Connection set
Heating flow pipe inch G1½
Heating return pipe, male thread with flat gasket inch G1½
Gas line inch G 1
Electrical power consumption WILO Stratos PARA 25/1-8, min./max. W8 / 140

Regulations
Condens 5000W – 6720813952 (2019/02)
10
2.14 Gas specification
Table 3 Gas specification
2.15 Hydraulic resistances
Table 4 Hydraulic resistances
Fig. 6 Resistance graph per type
[l/h] Flow rate
[mbar] Pressure drop
2.16 Residual head
Fig. 7 Residual head per type, with connection set and non-return
valve
[A] Resistance of wall mounted gas condensing boiler
[l/h] Flow rate
[mbar] Residual head
Fig. 8 Residual head per type, with connection set
[A] Resistance of wall mounted gas condensing boiler
[l/h] Flow rate
[mbar] Residual head
3Regulations
 Observe all regulations and standards applicable to the system in
your country prior to installation and commissioning.
 Make sure the entire system satisfies the following standards,
regulations and directives.
Where no specific instructions is given, reference should be made to the
following standards:
• AS 1596 LPG storage and handling.
• AS 1697 Installation and maintenance of steel pipe systems for gas.
• AS 1910 Water supply - float control valves for use in hot and cold
water.
• AS 3498 Authorization requirements for plumbing products - water
heaters and hot water storage tanks.
• AS 3500 National plumbing and drainage code.
• AS 4032 Water supply - valves for the control of hot water supply
temperatures.
• AS/NZS5263.1.2 Gas fired water heaters for hot water supply and/
or central heating.
• AS/NZS 5601 Gas Installations.
• AS/NZS 3000 Electrical Installations.
Table 5 Regulations, standards and guidelines
Unit
Boiler specifications
Type 70 Type 100
Gas type Natural
Gas/air ratio pressure,
@turn down
Pa -10 to 0 -10 to 0
Appliance inlet pressure
Min. / Rated / Max.
kPa 1.13/ 1.25 / 2.75
Injector size,
nominal/measured
mm NA 8.50
Gas consumption,
nominal
Mj/h 257 (G20) 386 (G20)
Gas consumption,
@turn down
Mj/h 47.8 (G20) 69.5 (G20)
Unit Type 70 Type 100
Required flow rate at ΔT = 20 K l/h 3000 4300
Max. flow rate at l/h 5000
Resistance of wall mounted gas
condensing boiler with required
flow rate
mbar 170 320
0010020129-001
500
450
400
350
300
250
200
150
100
50
0500 1000 1500 2000 2500 3000 3500 4000 4500 5000
[l/h]
[mbar]
70
100
0010020130-001
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
[mbar]
[l/h]
[A]
min.
70
100
Number description
92/42/EEC Efficiency Directive.
98/83/EC Directive in relation to the quality of water for human
consumption
2004/108/EC EMC Directive
2006/96/EC Low-voltage guideline
2009/142/EC EC Gas Appliances Directive
DIN 4726/4729 Oxygen diffusion resistance
EN 437 Test gases, test pressures, appliance categories
EN 12828 Heating systems in buildings - planning hot water
heating systems
EN 12831 Heating systems in buildings – process for
calculating the standard heat energy demand
EN 13384 Flue systems, heat and fault calculation models
EN 50201-1 Boiler for gaseous fuels - Part 1: General
requirements and tests
EN 50201-2-1 Boilers for gaseous fuels - Part 2-1: Type C boilers
and Type B2, B3 and B5 boilers with a rated heat
input no greater than 1000 kW
0010020131-001
0
50
100
150
200
250
300
350
400
450
500
550
600
650
700
750
800
0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000
[mbar]
[l/h]
[A]
70
100
min.

Transport
11
Condens 5000W – 6720813952 (2019/02)
4Transport
CAUTION:
Physical injury and damage to appliance due to incorrect lifting.
 At least two people are required to lift the wall mounted gas
condensing boiler.
 Only hold the wall mounted gas condensing boiler at the sidesand not
at the control panel or flue connection (figure 9).
 Mounting of the wall mounted gas condensing boiler on a hand truck
and locking with a fixing strap.
 Transport the wall mounted gas condensing boiler to the installation
location.
Fig. 9 Lifting and carrying the gas condensing boiler correctly
5 Assembly
WARNING:
Gas explosion.
 Turn off gas valve before working on gas-carrying components.
 Check for leaks before working on gas-carrying components.
5.1 Important information
If the wall mounted gas condensing boiler is used in heating systems with
natural water circulation or open systems (where heating water is in
contact with outdoor air):
 Mount a system separation (a plate heat exchanger for example)
between the wall mounted gas condensing boiler and the heating
system
If plastic pipes are used in the heating system, with an underfloor heating
system for example,
 use plastic pipes with oxygen diffusion resistance to DIN 4726/4729
-or-
 Mount a system separation (a plate heat exchanger for example)
between the wall mounted gas condensing boiler and the heating
system.
5.2 Water quality
Unsuitable or contaminated heating and tap water can lead to faults in
the wall mounted gas condensing boiler and can damage the heat
exchanger or DHW supply among other things due to sludge formation,
corrosion or limescale deposits. Please get in touch with the
manufacturer if you require additional information on the water quality.
You will find the relevant addresses on the back cover of these
instructions.
 Determine the water volume Vmax by referring to the “Water quality
operator's log”:
If the amount of fill and top-up water is already greater than the
calculated water volume Vmax:
 Use the water treatment in accordance with “Water quality operator's
log”.
If the amount of fill and top-up water is less than the calculated water
volume Vmax:
 Flush and clean the heating system if necessary.
 Only use untreated mains water.
 Do not use any chemical additives (e.g. inhibitors or pH-increasing or
reducing agents) other than those approved by Bosch
Thermotechnik.
Table 6 Approved inhibitors by Bosch Thermotechnic
5.3 Unpacking the wall mounted gas condensing boiler
 To ensure the connections are not damaged, only remove the
styrofoam at the bottom once the wall mounted gas condensing
boiler has been hung.
 Remove packaging and dispose of it.
 Prevent damage to the connections.
 Cover the connection for the flue gas/air supply on the top of the wall
mounted gas condensing boiler.
5.4 Check gas type
 Make sure that the gas type to which the wall mounted gas
condensing boiler is connected corresponds to the gas type specified
on the data plate (figure 4, [8]).
5.5 Mounting the wall mounted gas condensing boiler
NOTICE:
Damage to appliance due to incorrect lifting.
 Lift the wall mounted gas condensing boiler with one hand
underneath and the other on top of it.
The wall mounted gas condensing boiler may only be hung on the wall or
installed on a cascade frame.
Wall-mounted installation
 Check whether the wall is strong enough to support the weight of the
wall mounted gas condensing boiler.
 Mount a fastening structure if required.
 Determine the position of the wall mounted gas condensing boiler on
the wall.
 Mark holes using the supplied mounting rail (figure 10).
 Install the mounting rail on the wall with the assistance of a spirit
level.
0010009981-001
Product Concentration
Fernox F1 See Fernox product data sheet
Sentinel X100 See Sentinel product data sheet

Assembly
Condens 5000W – 6720813952 (2019/02)
12
Fig. 10 Installing the mounting rail on the wall
 Hook the wall mounted gas condensing boiler into the mounting rail.
 Level the wall mounted gas condensing boiler using the set screw [1]
and a spirit level.
Fig. 11 Aligning the gas condensing boiler
Mounting on a cascade frame
 For details on mounting the wall mounted gas condensing boiler in a
cascade frame, see the installation instructions for the cascade
system.
5.6 Remove the protective caps
NOTICE:
Water damage.
The wall mounted gas condensing boiler may contain water. This can be
discharged when the caps are removed.
 Keep a bucket and cloth handy.
 Take the caps off the connections on the underside of the wall
mounted condensing boiler.
5.7 Connecting on the water and gas side
There are ways to connect the wall mounted gas condensing boiler on the
water and gas sides:
• Using the connection set (accessory) (chapter 5.8)
• Without using the connection set (chapter 5.9).
5.8 Mounting the connection set (accessory)
NOTICE:
Installation damage.
The connection set includes a pressure relief valve.
 Check whether the heating system can withstand the operating
pressure specified on the pressure relief valve in the connection set.
 Replace the pressure relief valve with a pressure relief valve with a
lower excess pressure (accessory).
The following components have been incorporated into the connection
set:
• Gas isolator
• Service valves
• Manometer
•Thermometer
• Pressure Relief Valve
•Pump
• Drain & fill valve (DFV)
Fig. 12 Connection set scope of delivery
[1] Casing (insulation)
[2] Back panel (insulation)
[3] Return pipe
[4] Flat gasket 1½" (2 × )
[5] Gas isolator
[6] T piece
[7] Connection piece
[8] Flow pipe
5.8.1 Installing the gas isolator
Avoid damage to the gas valve with older gas lines.
 Install a gas filter to DIN 3368 in the gas line.
 Seal the gas connection on the wall mounted gas condensing boiler
using an approved sealant [1].
 Mount the gas isolator G 1" in the gas line [2].
0010009982-001
1. 2.
3.
4.
0010009984-001
1
0010009986-001
2
3
4
5
8
1
7
6

Assembly
13
Condens 5000W – 6720813952 (2019/02)
 Connect the gas pipe without stress to the gas isolator.
Fig. 13 Installing the gas isolator
[1] Sealing agents
[2] Gas isolator
5.8.2 Mounting the connection set
 Attach the screw fitting delivered with the wall mounted gas
condensing boiler (figure 1, [8]) to the flow and return connection
of the wall mounted gas condensing boiler.
 Connect the connection set to the flow and return connection of the
wall mounted gas condensing boiler.
 Use the flat gaskets [1] (included in the scope of delivery) for this.
 Connect the flow and return line to the connection set, making sure
they are free of stress. The minimum diameter of the supply and
return line must be 1½" (Ø 35 mm).
Fig. 14 Mounting the connection set
5.9 Connection of heating pipes (without connection
set)
NOTICE:
Damage to appliance due to excessive operating pressure.
 Mount a pressure relief valve between the wall mounted gas
condensing boiler and shut-off valve.
To make maintenance easier:
 Mount a service valve in the supply and return line.
 Connect the flow and return line to the wall mounted gas condensing
boiler, making sure they are free of stress. The minimum diameter of
the flow and return line must be 1½" (Ø 35 mm).
5.9.1 Gas-side connection
 Seal the gas connection on the wall mounted gas condensing boiler
using an approved sealant [1].
 Use a gas isolator [2] with a diameter of at least 1".
 Connect the gas pipe without stress to the gas isolator.
Fig. 15 Installing the gas isolator
[1] Sealing agents
[2] Gas isolator
5.9.2 Mounting the pump
 Select a pump based on the technical data (tab. 2, page 9).
 Take the required flow rate into account (tab. 4, page 10).
If a low loss header is not used:
 Select a pump that has a residual head of at least 200 mbar with the
required flow rate.
 Install the pump [6] in the return line [5].
Fig. 16 Connection of the heating water pipework
[1] Flow pipe
[2] Pressure Relief Valve
0010009988-001
2
1
0010009990-001
11
0010009992-001
1
2
0010009994-001
8
43
3 3
15
26
7
39
10

Assembly
Condens 5000W – 6720813952 (2019/02)
14
[3] Service valve
[4] Gas isolator
[5] Return pipe
[6] Pump
[7] Non-return valve
[8] Drain & fill valve (DFV)
[9] Expansion vessel
[10] Dirt trap
5.10 Install the low loss header
If the residual head is insufficient with the required flow rate (tab. 4,
page 10), a low loss header [1] must be installed.
Fig. 17 Installation of the low loss header
[1] Low loss header
[2] Expansion vessel
[3] Pump
[4] Service valve
[5] Pressure differential controller
5.11 Installing the siphon
 Removing the transport protection.
Fig. 18 Remove the transport protection
 Fill the condensate trap with water.
 Installing the condensate trap.
Fig. 19 Installing the condensate trap
With connection set
 Install tee [1] between pressure relief valve and siphon.
 Mount flexible hose [2].
Fig. 20 Mounting the flexible hose
[1] T piece
[2] Flexible hose tube
0010020132-001
1
2
3
4
4
5
0010009997-001
1.
2.
0010009998-001
2.
1.
0010009999-001
1
2

Assembly
15
Condens 5000W – 6720813952 (2019/02)
Without connection set
 Connect flexible hose to the siphon.
5.12 Connecting the condensate drain
NOTICE:
Boiler damage.
 Make surethere is an open connection between the wall mounted gas
condensing boiler and condensate discharge pipe.
 Use a waste water pipe made of plastic material with a diameter of at
least Ø 32 mm to remove the condensate.
 Install a siphon in the waste water pipe.
 Connect horizontal pipe sections with a gradient to the waste water
pipe.
The maximum length ofthe horizontal pipe section in this case is 5 m.
 Fill siphon in the waste water pipe.
5.13 Expansion vessel connection
Determine the size and supply pressure of the expansion vessel based on
EN 12828.
If the option to connect the expansion vessel to the connection set is
used with a cascade installation on the reverse side (TR), a right-angled
coupling is required in the front row of the wall mounted gas condensing
boilers.
 Remove the cap from the connection point [1].
 Connect the connection pipe of the expansion vessel to the
connection point.
Fig. 21 Expansion vessel connection
5.14 Mounting the back panel insulation
 Hook back panel of the connection set into the wall mounted gas
condensing boiler.
Fig. 22 Mounting the back panel (insulation)
5.15 Connection of air supply and flue system
The flue pipe documentation is included in the scope of delivery of the
wall mounted gas condensing boiler.
 Read these instructions carefully before the installation.
 Connect the air supply and flue gas pipe according to the instructions
for this flue gas routing accessory.
5.15.1 Flue terminal positions
NOTICE:
 Install a fire proof board if installing on combustible surfaces.
 The location of the flue terminal must comply with the clearances
shown on this page. If you are unsure about clearances not indicated
here, in general refer to AS/NZS5601 or your local authority. In
Western Australia refer to SECWA rules and regulations.
 All measurements are the minimum clearances required.
 Terminals must be positioned to avoid combustion products entering
the building.
The fixing method must be sufficient to hold the weight of the boiler.
0010010000-001
1
0010010001-001

Electrical connection
Condens 5000W – 6720813952 (2019/02)
16
 Use as a guide only. Refer to AS/NZS5601 or local gas fitting rules for
specific locations.
Fig. 23 Flue terminal positions
[I] Mechanic air inlet
[M] Gas meter
[P] Electricity meter or fuse box
[T] Flue terminal
[W] Window
[ ] Shaded area indicates prohibited area
Table 7 Minimum clearances
6 Electrical connection
 When establishing the electrical connections, also observe the
documentation and wiring diagram of the accessory being connected
(chapter 2.12).
CAUTION:
Risk of electric shock.
 Always isolate the wall mounted gas condensing boiler from the
power supply before working on the electrical parts.
NOTICE:
Short circuit.
 Only use original cables if they must be replaced.
In order to commission and shut down the wall mounted gas condensing
boiler, the mains plug and therefore the socket (230 V AC, 50 Hz) must
be accessible at all times. The socket must be earthed (earthing
contact).
Use a 2-wire power cable with 0.4 - 0.8 mm2cross-section for all 24 V
AC connections on the terminal strip.
6.1 Control principle
The wall mounted gas condensing boiler is suitable for control according
to the principles of room temperature-dependent and weather-
dependent control.
• In the case of room temperature-dependent control, the user
interface in 1 room controls the temperature required within it (room
temperature-dependent controller). In order to control the
temperature correctly, radiators must be equipped with manual
radiator valves or the thermostatically controlled radiator valves
must be fully open (figure 24).
• With weather-dependent control, the temperature in all rooms is
controlled by thermostatically controlled valves mounted on the
radiators. The controls can be installed in any location (figure 25).
Fig. 24 Control principle of room temperature-dependent control
[1] Wall mounted gas condensing boiler
[2] Room temperature-dependent controller
[3] Radiator valve
[4] Thermostatically controlled radiator valve
[5] Other rooms
[6] Living space
[7] Installation location
Fig. 25 Principle of weather-compensated control
[1] Wall mounted gas condensing boiler
[2] Room temperature-dependent controller
[3] Thermostatically controlled radiator valve
Ref. Item Min.
clearances
[mm]
a Below eaves, balconies and other projections
(Appliances over 50Mj/h)
300
bFrom the ground, above a balcony or other surface 300
c From a return wall or external corner 300
dFrom a gas meter 1,000
e from an electricity meter or fusebox/breaker panel 500
fFrom a drain pipe or soil pipe 75
g Horizontally from any building structure or
obstruction facing a flue terminal
500
hFrom any other flue terminal, cowl or combustion
air intake
300
j Horizontally from any opening window, non-
mechanical air inlet or other opening into a building
with the exception of sub-floor ventilation
1,500
kFrom a mechanical air inlet including a spa blower 1,000
n Vertically below an opening window, door, non-
mechanical air inlet or other opening into a building
with the exception of sub-floor ventilation
1,500
0010024745-001

0010010002-001
1
2
765
4
3
0010010003-001
1
2
6
7
5 4
3
3
8

Electrical connection
17
Condens 5000W – 6720813952 (2019/02)
[4] Other rooms
[5] Living space
[6] Installation location
[7] External
[8] Outdoor temperature sensor
6.2 Connection of the control units
Electrical work must only be carried out by qualified electrical
contractors.
The terminal strip is located behind the cover.
 Unscrew the control panel and hang on the frame.
Fig. 26 Mounting the user interface
 Turn the locks a quarter turn clockwise then remove the cover.
Fig. 27 Removing the cover
 Connect the components to the relevant plug.
Fig. 28 Terminal strips
[1] 24 V AC terminal strip
[2] 230 V AC terminal strip
6.3 Installation of the strain relief
 Always pass the cable to be installed through a supplied strain relief
mechanism before attaching it to a mains plug.
 Trim the grommet of the strain relief according to the dimension of
the cable.
 Always pass the cable to be installed through a supplied strain relief
mechanism.
Fig. 29 Cable entry
 Fasten the corresponding plug to the cable.
 Plug the plug in at the terminal strip.
 Tighten the screw of the strain relief.
Fig. 30 Tightening the screw
0010010004-001
2x
0010010005-001
45°
0010010006-001
2
1
0010010007-001
A
B
0010010008-001

Electrical connection
Condens 5000W – 6720813952 (2019/02)
18
6.4 Connecting the on/off room temperature-dependent
control unit
All standard potential-free on/off room temperature-dependent control
units without heat acceleration element (anticipation resistor) can be
connected.
 Connect the on/off roomtemperature-dependent control unit via the
green plug on the terminal strip [1]. The maximum permissible
electrical resistance of this cable is 100 Ω.
Fig. 31 Connecting the on/off room temperature-dependent control
unit
6.5 Connecting the modulating controller
The following modulating controllers can be connected:
• Fx controller
•IGM,IPM
For more information on other controllers and modules that can be used,
please consult the manufacturer. You will find the relevant addresses on
the back cover of these instructions.
 Install the modulating controller as specified in the accompanying
instructions.
 Connect the modulating controller via the orange plug on the terminal
strip [1] (BUS cable).
Fig. 32 Connection of the modulating controller
6.6 Connecting an external switching contact
An optional external switching contact can be used (to protect the
underfloor heating system from excessive boiler temperatures for
example). If the external switching contact opens, the wall mounted gas
condensing boiler is switched off and the code “d3” appears in the
display of the wall mounted gas condensing boiler.
All standard, potential-free switching contacts can be connected for use
as external switching contact.
 Remove the jumper of the red plug [1].
 Connect the external switching contact via the red plug on the
terminal strip [1].
Fig. 33 Connection of an external switching contact
6.7 Connecting an outside temperature sensor
(accessory)
Only one outside temperature sensor that can be combined with the
connected controller can be used at the wall mounted gas condensing
boiler.
 Connect the outside temperature sensor via the blue plug at the
terminal strip [1].
Fig. 34 Connecting the outside temperature sensor
6.8 Connecting a cylinder temperature sensor
Connection is not possible.
6.9 Connecting the 3-way valve
Connection is not possible.
6.10 Connecting the function module (accessory)
For the assembly and combination options of the function modules, refer
to the relevant installation instructions of the function modules.
 Connect the BUS cable to the connection for the modulating
controller (chapter 6.5).
0010010009-001
13 12 11 10 9 8 7 6 5 4 3 2 1
1
0010010010-001
13 12 11 10 9 8 7 6 5 4 3 2 1
1
0010010012-001
13 12 11 10 9 8 7 6 5 4 3 2 1
1
0010010013-001
13 12 11 10 9 8 7 6 5 4 3 2 1
1

Operating the appliance
19
Condens 5000W – 6720813952 (2019/02)
 Connect the power supply of the function module to the connector
block [1]. Use the power cable supplied with the function module for
this.
Fig. 35 Connecting the mains voltage
6.11 Connecting the cylinder primary pump
Connection is not possible.
6.12 Connecting the hot water circulation pump
Connection is not possible.
6.13 Connecting the pump
With connection set:
 Connect the control signal line of the pump to the white plug of the
terminal strip [1].
 Remove the green plug [2] from the terminal strip.
 Connect the power cable of the pump to the terminal strip [2].
 Fasten both cables using the strain relief devices mounted
beforehand on the cables.
Without connection set:
 Slide the strain relief (provided) over the power cable of the pump.
 Connect the power cable of the pump to the green plug of the
terminal strip [2].
Fig. 36 Connection of pump
6.14 Fit mains plug (if not preassembled)
WARNING:
Risk of electric shock.
 Before carrying out work on electrical components, disconnect the
power supply (240 V AC) (fuse, circuit breaker) and secure against
unintentional reconnection.
Observe the safety measures according to the relevant regulations and
AS/NZS 3000. No other electrical consumer units may be connected to
the same power cable.
 Fit mains plug to power cable (figure 1, [5]) of wall mounted gas
condensing boiler.
Fig. 37 Fitting the mains plug
[1] Neutral (blue)
[2] Earth (green/yellow)
[3] Phase (brown)
7 Operating the appliance
Fig. 38 Control panel
[1] 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:
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 interlocking faults (Chapter 12.2 "Reset").
“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
0010010018-001
11
L
PE
N
0010010022-001
2
11
0010010023-001
1
2
3
0010020121-001
1 2 3 54 986 7

Operating the appliance
Condens 5000W – 6720813952 (2019/02)
20
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 8 Display indications in normal mode
“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.
7.1 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 9 Information menu
7.2 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.
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)
CFlue gas inspector 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.
Information menu
The text “info” is displayed for 1 second.
Maximum boiler temperature set [ °C] during
heating mode and flue gas inspector 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 12.
Displays an operating code or fault code.
For a comprehensive overview of the display
codes and corresponding explanations see
chapter 12.
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.
Information menu