Bosch Condens 7000 F Instruction Manual

6720871560 (2019/11) GB/IE
Installation and maintenance instructions for the contractor
Gas-fired condensing boiler
Condens 7000 F
GC7000F 75...300

Table of contents
Condens 7000 F – 6720871560 (2019/11)
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Determined use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Declaration of conformity . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3 Product data for energy consumption . . . . . . . . . . . . . . 5
2.4 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.5 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.6 Tools, materials and assembly aids. . . . . . . . . . . . . . . . . 5
2.7 The heating system is operated and monitored via
App or Web Portal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.8 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.8.1 Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.9 Dimensions and specifications . . . . . . . . . . . . . . . . . . . . 8
2.9.1 Dimensions and connections Condens 7000 F . . . . . . . 8
3 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.1 Regulations for gas systems . . . . . . . . . . . . . . . . . . . . . 11
3.2 Duty to obtain a permit and provide notification . . . . . 11
3.3 Validity of regulations. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Notes on installation and operation . . . . . . . . . . . . . . . 11
3.5 Installation location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.6 Quality of the heating water. . . . . . . . . . . . . . . . . . . . . . 12
3.7 Pipework quality. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.8 Combustion air quality. . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.9 Combustion air/flue gas connection/air vents . . . . . . . 12
3.10 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4 Transporting the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1 Transporting the boiler by crane/hoist . . . . . . . . . . . . . 13
4.2 Lifting the boiler off the pallet . . . . . . . . . . . . . . . . . . . . 14
4.3 Transporting the boiler on rollers . . . . . . . . . . . . . . . . . 14
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.1 Installation location requirements . . . . . . . . . . . . . . . . 15
5.2 Preventing noise disturbance for end-users. . . . . . . . . 15
5.3 Wall clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5.4 Levelling the boiler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.5 Installing the condensate pipes. . . . . . . . . . . . . . . . . . . 16
5.6 Establishing the flue gas connection. . . . . . . . . . . . . . . 17
5.7 Connecting the air supply (for room sealed
operation). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.8 Hydraulic connection. . . . . . . . . . . . . . . . . . . . . . . . . . . 18
5.8.1 Connecting the flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.8.3 Installing the safety assembly on the flow (on site) . . . . 19
5.8.4 Installing a DHW cylinder. . . . . . . . . . . . . . . . . . . . . . . . 21
5.9 Filling the heating system and checking for leaks . . . . 21
5.10 Providing the fuel supply . . . . . . . . . . . . . . . . . . . . . . . . 22
5.11 Fitting the boiler cover. . . . . . . . . . . . . . . . . . . . . . . . . . 22
6 Electrical connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.1 Installing the control unit . . . . . . . . . . . . . . . . . . . . . . . . 23
6.2 Establishing the power supply connection and
installing the cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
7 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.1 Checking the operating pressure . . . . . . . . . . . . . . . . . 24
7.2 Checking for leaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
7.3 Recording gas parameters . . . . . . . . . . . . . . . . . . . . . . 25
7.4 Checking device equipment . . . . . . . . . . . . . . . . . . . . . 25
7.5 Converting the boiler to a different gas type . . . . . . . . 25
7.5.1 Converting to another type of natural gas . . . . . . . . . . 25
7.5.2 LPG conversion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.6 Purging the gas line . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.7 Supply air and flue gas connection . . . . . . . . . . . . . . . . 27
7.7.1 Check supply and extract ventilation and flue gas
connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.7.2 Checkingthefluegasdamper (scope of delivery of
positive pressure cascade) . . . . . . . . . . . . . . . . . . . . . . 27
7.8 Making the heating system operational . . . . . . . . . . . . 27
7.9 Commissioning the control unit and burner. . . . . . . . . 27
7.9.1 Switching on the boiler at the control unit . . . . . . . . . . 27
7.9.2 Carrying out a flue gas test . . . . . . . . . . . . . . . . . . . . . . 27
7.10 Measuring the gas supply pressure and static
pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.11 Checking the gas/air ratio . . . . . . . . . . . . . . . . . . . . . . . 28
7.11.1 Check CO2 setting at full load. . . . . . . . . . . . . . . . . . . . 28
7.11.2 Checking the CO2 setting under partial load . . . . . . . . 28
7.12 Concluding the flue gas test . . . . . . . . . . . . . . . . . . . . . 29
7.13 Set the standard display at the control unit . . . . . . . . . 29
7.14 Recording measurements . . . . . . . . . . . . . . . . . . . . . . . 29
7.14.1 Flue resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.14.2 CO value . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.15 Function tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7.15.1 Checking the ionisation current (flame current) . . . . . 29
7.16 Checking tightness during operation . . . . . . . . . . . . . . 30
7.17 Installing casing parts . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8 Briefing the user, handing over technical documents . . . . . 30
9 Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.1 Shutting down the heating system via the control
unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2 Shutting down the heating system in an
emergency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
10 Environmental protection and disposal . . . . . . . . . . . . . . . . . 31
11 Inspection and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11.1 Preparing the boiler for inspection. . . . . . . . . . . . . . . . 31
11.2 Detailed overview of boiler components . . . . . . . . . . . 32
11.3 General work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.4 Internal tightness test . . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.4.1 Determining the testing volume . . . . . . . . . . . . . . . . . . 33
11.4.2 Carrying out gas tightness test . . . . . . . . . . . . . . . . . . . 34
11.5 Checking the heating system operating pressure . . . . 35
11.6 Measuring the carbon dioxide content . . . . . . . . . . . . . 35
11.7 Removing the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
11.8 Cleaning the burner and heat exchanger . . . . . . . . . . . 38
11.8.1 Cleaning the burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11.8.2 Cleaning the heat exchanger. . . . . . . . . . . . . . . . . . . . . 38
11.9 Inspecting the burner electrodes . . . . . . . . . . . . . . . . . 40
11.10 Testing the differential pressure switch . . . . . . . . . . . . 40

Table of contents
3
Condens 7000 F – 6720871560 (2019/11)
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 andcan 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 indicates important information where there is no risk to
people or property.
Additional symbols
Table 1
1.2 General safety instructions
HNotices 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.
 Follow national and regional regulations, technical
regulations and guidelines.
 Record all work carried out.
11.11 Replacing components. . . . . . . . . . . . . . . . . . . . . . . . . .41
11.11.1 Removing the air/gas ratio control valve . . . . . . . . . . .41
11.11.2 Removing the fan. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41
11.11.3 Replacing components according to the service
life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
11.12 Refitting detached parts . . . . . . . . . . . . . . . . . . . . . . . .43
11.12.1 Fitting the gas line to the gas valve. . . . . . . . . . . . . . . .43
11.12.2 Refit the combustion air connector.. . . . . . . . . . . . . . .43
11.13 Check for leaks during operation. . . . . . . . . . . . . . . . . .43
11.14 Checking the ionisation current. . . . . . . . . . . . . . . . . . .43
11.15 Completing inspection and maintenance . . . . . . . . . . .43
11.15.1 Removing measuring devices . . . . . . . . . . . . . . . . . . . .43
11.15.2 Installing casing parts . . . . . . . . . . . . . . . . . . . . . . . . . .43
11.15.3 Checking the gas/air ratio. . . . . . . . . . . . . . . . . . . . . . .43
11.15.4 Confirming inspection and maintenance. . . . . . . . . . .43
12 Emergency operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
12.1 Clearing faults in emergency operation. . . . . . . . . . . . .44
13 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
13.1 Recognising the operating condition and clearing
faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
13.2 Calling up the fault history . . . . . . . . . . . . . . . . . . . . . . .44
14 Operating and fault displays. . . . . . . . . . . . . . . . . . . . . . . . . . .45
14.1 Control unit status indicators. . . . . . . . . . . . . . . . . . . . .45
14.2 Service displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
14.3 Control unit fault displays . . . . . . . . . . . . . . . . . . . . . . .46
14.4 Status indicator of the burner control unit.. . . . . . . . . .53
15 Check temperature switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
16 Testing the differential pressure switch . . . . . . . . . . . . . . . . .54
16.1 Test the continuity of the differential pressure
switch at negative pressure. . . . . . . . . . . . . . . . . . . . . .54
16.2 Test the differential pressure switch for continuity
at zero pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
17 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
17.1 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
17.2 Sensor curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
17.2.1 Temperature sensor at digital burner control unit . . . .59
17.3 Hydraulic resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . .59
17.4 Connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . .59
17.4.1 Control unit connection diagram . . . . . . . . . . . . . . . . . .59
17.4.2 Burner control unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60
17.4.3 Diagrammatic representation of supply air/flue
gas monitor and gas tightness . . . . . . . . . . . . . . . . . . . .61
17.5 Conversion of vol.% CO2 into vol.% O2 for burner
setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
17.6 System Commissioning Report . . . . . . . . . . . . . . . . . . .63
17.7 Inspection and maintenance protocols. . . . . . . . . . . . .64
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
Condens 7000 F – 6720871560 (2019/11)
4
HIf you smell gas
 Close gas isolator.
 Open windows and doors
 Never operate electrical switches, including
telephones, plugs or doorbells.
 Extinguish any naked flames.
 Never smoke.
 Never use any lighters or sources of ignition
of any kind.
 Warn all occupants in the building, but do not ring
doorbells.
 If you can actually hear gas escaping, leave the
building immediately.
 Prevent third parties from entering and notify the
police and fire brigade as well as the gas supplier
and heating contractor from outside the building.
HDanger of explosion of flammable gases
 Any work on components that carry gas may only be
carried out by an approved contractor.
HDanger posed by explosive and easily
flammable materials
 Never use or store easily flammable materials
(paper, curtains, clothing, thinners, paints, etc.)
near the device.
 Observe all local regulations in relation to the
storage of combustible materials at the installation
location.
HDanger through short circuits
To prevent short circuits:
 Only use original cabling by the manufacturer.
HDanger through electric shock when the boiler
is open
 Before opening up the boiler, isolate it completely
from themains power supply and ensure the power
cannot be inadvertently reconnected.
 It is not enough to switch off the control unit.
HDanger if you smell flue gas
 Switch off the boiler.
 Open windows and doors.
 Notify an approved contractor.
HIn devices with open-flue mode:
there is a risk of poisoning from flue gas if there
is an inadequate combustion air supply
 Ensure that there is an adequate combustion air
supply.
 Do not cover or reduce the size of ventilation
apertures in doors, windows and walls.
 Ensure that there is an adequate combustion air
supply, including for any devices installed at a later
date, e.g. extractor fans, kitchen fans or air
conditioning units that discharge air to the outside.
 Never operate the device if there is an insufficient
combustion air supply.
HDanger of escaping flue gases
 Ensure that the flue pipes and gaskets are not
damaged.
 Ensure that the boiler is not equipped with a
thermostatic flue gas damper downstream of the
flue gas connection.
Use of motor-controlled supply air flaps is permitted.
HInstallation and operation
 Correct and proper installation and adjustment of
the burner and the controller are the fundamental
requirements for safe and economical operation of
the boiler.
 The boiler must only be installed and adjusted by an
approved contractor.
 Do not change parts at the boiler as otherwise the
approval would be invalidated.
 Never modify any parts through which flue gas is
routed.
 Electrical work must only be carried out by qualified
electricians.
With open flue operation: do not cover or reduce
the size of ventilation apertures in doors, windows
and walls. Make sure that windows that are used as
combustion air vents cannot be shut accidentally.
Attach a warning sign near the window. If draft-
proof windows are installed, ensure an adequate
supply of combustion air.
 If the supply air flaps can be closed via motors,
combustion must only start when the supply air flap
is fully open (volt free checkback signal to the boiler
controller via failsafe limit switch). Provide for
control of supply air flaps.
 Make sure the boiler installation location is frost-
proof.

Product Information
5
Condens 7000 F – 6720871560 (2019/11)
Never shut off pressure relief valves!
Water may escape from the pressure relief valve for
the heating circuit and piping when the water is
heating up.
 The heating system must be installed and operated
in accordance with the applicable rules of
technology as well as national, regional and local
regulations.
HRisk of damage from operating errors
Operator errors can result in personal injury and/or
material damage.
 Ensure that children never operate this appliance
unsupervised or play with it.
 Ensure that only personnel who can operate this
appliance correctly have access to it.
HInstructing the user
 Explain to the user how the boiler works and how to
operate it.
 The user is responsible for ensuring the heating
system is safe and environmentally compatible
(local regulations and laws).
 Inform users that they must never carry out any
modifications or maintenance work.
 Point out the need for inspections and maintenance
for safe and environmentally-compatible operation.
 Maintenance and repairs may only be performed by
an authorised heating contractor.
 Only use genuine spare parts.
 Any other combinations, accessories and wearing
parts may only be used if these are specifically
designed for the application and impair neither the
performance characteristics nor the safety
requirements.
2ProductInformation
2.1 Determined use
The Condens 7000 F is designed for use as a floor standing gas
condensing boiler for DHW and central heating.
Only approved gases can be used.
 Observe the details on the data plate and the specifications
(Chapter 17.1, page 56).
2.2 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-industrial.com
2.3 Product data for energy consumption
The product data on energy consumption can be found in the operating
instructions for the user.
2.4 Scope of delivery
The Condens 7000 F is delivered with a control unit, which is assigned
when ordering, in 2 packaging units.
 Upon receipt check that all packaging is in perfect condition.
 Check the scope of delivery for completeness.
 Dispose of packaging in an environmentally responsible manner.
Table 2 Scope of delivery
2.5 Accessories
Our website and brochure provides a comprehensive overview of all
available accessories.
The following accessories are available:
• Safety valve or safety assembly
• Flue system
•Supplyairsystem
•HMI
• Cascade pipework (on the water and flue gas side for dual cascades)
2.6 Tools, materials and assembly aids
The following tools and assembly aids are required for commissioning,
inspection and maintenance of the boiler:
• Standard tools used by heating system installers and for gas and
water installations.
• Metric hexagon wrench set (7; 8; 10; 13 width across flats)
• Allen key set (4mm)
•Torxkeyset
• The user interface as a monitoring device for commissioning,
inspecting and servicing the boiler.
The following may also prove useful:
• 2 transport rollers (furniture transport rollers; minimum length
600 mm, load-bearing capacity > 200 kg) for rolling the floor
standing boiler.
– Alternative: 5 pipes (approx. R 1¼ ", approx. 700 mm long) as
base for rolling the floor standing boiler.
• Cleaning blade and/or chemical cleaning agent for wet cleaning
(available as accessories)
2.7 The heating system is operated and monitored via
App or Web Portal
We offer, in combination with the relevant control unit, a comprehensive
range of products for monitoring, diagnosis and control of the floor
standing boiler via mobile terminal devices, PC or tablet.
Packaging unit Component Packaging
1 (boiler) Floor standing boiler
installed (with gas
burner, without casing)
1 shrink-wrap
package, on a pallet
Adjustable feet 1 shrink-wrap package
ConversioncovertoLor
LL-Gas
Label for gas type
conversion
1 shrink-wrap package
Technical documents 1 shrink-wrap package
Casing 2 cartons, on a pallet
2 (separate) Control unit 1 carton

Product Information
Condens 7000 F – 6720871560 (2019/11)
6
2.8 Product overview
The Condens 7000 F is a floor standing condensing boiler with an
aluminium heat exchanger.
2.8.1 Product Description
The main Condens 7000 F components are:
•Controlunit
• Boiler block
• Appliance frame and casing
•Gasburner
The control unit monitors and controls all electrical boiler components.
The boiler block transfers the heat generated by the burner to the
heating water. The thermal insulation reduces the radiation and standby
losses.
The control unit enables the standard operation of the heating system.
For this, it makes the following functions available, including:
• Switching the heating system on/off
• Setting the DHW temperature and the maximum boiler temperature
in heating mode
• Status display
This floor standing boiler can be operating via the CC 8313 or MX25
control unit.
Many additional functions that enhance control and operating
convenience as well as information on the heating system settings are
described inthecorrespondingTechnical documentationofthe installed
control unit.
Fig. 1 Condens 7000 F, 75...100 kW main components (shown: right-hand version; cleaning cover and flow and return are located on the right)
[1] Boiler front panel (2-part)
[2] Gas valve
[3] Gas burner with burner rod
[4] Control unit CC 8313 (optional)
[5] MX25 control unit (optional)
[6] Boiler block with thermal insulation
[7] Boiler casing
[8] Condensation catch pan and siphon
[9] Bottom panel
[10] Burner control unit
0010014182-001
6
7
4
5
3
2
1
810 9

Product Information
7
Condens 7000 F – 6720871560 (2019/11)
Fig. 2 Condens 7000 F, 150...300 kW main components (shown: right-hand version; cleaning cover and flow and return are located on the right)
[1] Boiler front panel (2-part)
[2] Gas valve
[3] Gas burner with burner rod
[4] Control unit CC 8313 (optional)
[5] MX25 control unit (optional)
[6] Boiler block with thermal insulation
[7] Boiler casing
[8] Condensation catch pan and siphon
[9] Bottom panel
[10] Burner control unit
The right-hand versions of the boiler are shown. In this case the cleaning
cover and the flow and return are located on the right.
In the left-hand version, the cleaning cover and flow and return are
located on the left.
0010014184-001
9
6
7
4
5
3
2
1
810

Product Information
Condens 7000 F – 6720871560 (2019/11)
8
2.9 Dimensions and specifications
2.9.1 Dimensions and connections Condens 7000 F
Fig. 3 Dimensions and connections for Condens 7000 F, 75...100 kW (right and left-hand version; dimensions in mm)
0010014185-002
B
GR
H
K
B
H
MX25
H
8313
L
K
L
139
478
A
B
A
H
VSL
H
VK
H
AA
H
RLU
H
EL
D
AA
EL
H
Gas
A
VSL
A
2
A
GAS
H
RK
H
AKO
AKO
RK
AA
VK
H
VSL
H
VK
H
AA
H
RLU
H
EL
D
AA
EL
H
Gas
A
VSL
A
2
A
GAS
H
RK
H
AKO
A
1
A
3
A
AA
AKO
RK
AA
VK
A
RLU
A
4
A
4
A
RLU
A
AA
A
3
A
1

Product Information
9
Condens 7000 F – 6720871560 (2019/11)
Fig. 4 Dimensions and connections for Condens 7000 F, 150...300 kW (right and left-hand version; dimensions in mm)
0010014186-002
B
GR
H
K
H
VSL
L
K
L
139
478
H
VK
H
AA
H
RLU
H
EL
D
AA
EL
H
Gas
A
VSL
A
2
A
GAS
H
RK
H
AKO
A
B
A
B
H
MX25
AKO
RK
AA
VK
H
8313
H
VSL
H
VK
H
AA
H
RLU
H
AKO
D
AA
AKOAKOAKO
H
Gas
A
VSL
A
2
A
GAS
H
RK
H
EL
EL
RK
AA
VK
H
AS
153
A
1
A
4
A
3
A
AA
A
RLU
A
3
A
RLU
A
1
A
AA
A
4
DN200: min. 80
DN160: min. 50
max. 7
Ø 160
±0,8
Ø 200
±0,8
X
X

Product Information
Condens 7000 F – 6720871560 (2019/11)
10
Key to figs. 3 and 4:
A Clearance
A1Boiler return clearance
A2Boiler flow clearance
A3Drain clearance
A4Condensate discharge clearance
AAA Flue gas connection clearance
ABBase frame width
AGAS Gas connection clearance
ARLU Combustion air connection clearance
AVSL Safety pipe flow clearance
AA Flue gas outlet
AKO Condensate connection
B Width of boiler including casing
BGR Base frame width
DAA Inner dia. of flue outlet
EL Cold water inlet/drain
H8313 Control unit height CC 8313
HMX25 Control unit height MX25
HAA Flue outlet height
HAS Vertical height of flue outlet (optional)
HAKO Condensate outlet height
HGAS Gas connection height
HEL Drain height
HK Boiler height
HRK Boiler return (low temperature return) height
HRLU Combustion air connection height
HVK Boiler flow height
HVSL Flow safety pipe height
L Length of boiler including cladding
LKBoiler length
VK Boiler flow
VSL Pressure relief valve and flow safety pipe connections
(for open vented systems)
Boiler size (output in kW)
Unit 751) 752) 100 1) 100 2) 150 1) 150 2) 200 1) 200 2) 250 1) 250 2) 300 1) 300 2)
Clearance A mm 255 255 255 255 255 255 255 255 255 255 255 255
Dimensions A1mm 150 520 150 520 135 534 135 534 135 534 135 534
Dimension A2mm 150 520 150 520 135 534 135 534 135 534 135 534
Dimension A3mm 155 515 155 515 183 520 126 520 126 520 126 520
Dimension A4mm 214 223 214 223 201 215 201 215 201 215 201 215
Dimension AAA mm 330 340 330 340 330 340 330 339 330 339 330 339
Dimension ABmm 480 480 480 480 695 695 977 977 977 977 977 977
Dimension AGAS mm 576 576 576 576 569 569 569 569 569 569 569 569
Dimension ARLU mm 500 500 500 500 475 475 475 475 475 475 475 475
Dimension AVSL mm 160 510 160 510 150 520 150 520 150 520 150 520
RLU connection mm 110 110 110 110 110 110 160 160 160 160 160 160
Internal flue gas
outlet Ø AA
mm 110 110 110 110 160 160 200 200 200 200 200 200
Condensate
connection
inch
(DN/mm)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
¾‘’
(DN20)
Connection
Ø VSL
inch R 1’’ R 1’’ R 1’’ R1’’ R1¼’’ R1¼’’ R1¼’’ R1¼’’ R1¼’’ R1¼’’ R1¼’’ R1¼’’
Connection
ØGAS
inch R ¾’’ R ¾’’ R ¾’’ R ¾’’ R 1¼’’ R 1¼’’ R 1¼’’ R 1¼’’ R 1¼’’ R 1¼’’ R 1¼’’ R 1¼’’
Connection
VK and RK
inch3) 2" 2" 2" 2" – – – – – – – –
Connection
VK and RK
DN4)/mm – – – – DN 50 DN 50 DN 65 DN 65 DN 65 DN 65 DN 65 DN 65
Width B mm 670 670 670 670 670 670 670 670 670 670 670 670
Width BGR mm 550 550 550 550 550 550 550 550 550 550 550 550
Height 8313 mm 1710 1710 1710 1710 1710 1710 1710 1710 1710 1710 1710 1710
HeightMX25 mm 1624 1624 1624 1624 1624 1624 1624 1624 1624 1624 1624 1624
Height HKmm 1470 1470 1470 1470 1470 1470 1470 1470 1470 1470 1470 1470
Height HAA mm 424 424 424 424 700 700 763 763 763 763 763 763
Height HAS mm – – – – 155 155 190 190 190 190 190 190

Regulations
11
Condens 7000 F – 6720871560 (2019/11)
Table 3 Measurements and connection dimensions
3Regulations
DANGER:
Failure to comply with instructions may result in material damage
and personal injury, including danger to life!
 Comply with all instructions.
NOTICE:
Risk of system damage due to differing operating conditions!
Faults may arise if the specified operating conditions are disregarded.
Where there is serious disregard for the stated operating conditions,
individual components or the boiler itself may be destroyed.
 Observe the binding information on the data plate.
3.1 Regulations for gas systems
In order to ensure installation and operation of the product in
accordance with the regulations, please observe all the applicable
national and regional regulations as well as all technical rules and
guidelines.
The document 6720807972 contains information about the applicable
regulations. You can use the document search on our website to display
this. You will find the address of the website on the back of these
instructions.
3.2 Duty to obtain a permit and provide notification
Prior to installation of the heating and flue system:
 Inform relevant building authority.
 If required by the Clean Air Act 1993, seek approval for the flue
system from the Local Authority. For additional guidance see IGE/UP/
10 edition 4.
 Make sure that there are no concerns on the part of the authority
regarding the planned installation
 Make sure that official requirements are complied with.
 Please note that in certain regions approvals may be required for the
flue system and the connection of the condensate outlet to the public
sewerage system.
3.3 Validity of regulations
Modified regulations or supplements are also valid at the time of
installation and must be observed.
3.4 Notes on installation and operation
Use only genuine spare parts from the manufacturer. The manufacturer
can assume no liability for damage caused by spare parts not supplied by
the manufacturer.
When installing and operating the heating system, observe the following
requirements:
• The local building regulations regarding installation conditions.
• The local building regulations regarding the supply and exhaust air
systems, and the chimney connection.
• Latest edition of the IEE Wiring regulations governing electrical
connection to the mains power supply
• Regulations and standards regarding the safety equipment in water-
filled heating systems. For guidance see the ICOM water treatment
guide for commercial heating systems.
• Make sure that the regional approvals required for the flue system
and condensate connection to the public sewage system have been
obtained.
Height HAKO mm 257 257 257 257 177 177 177 177 177 177 177 177
Height HEL mm 455 455 455 455 177 280 177 280 177 280 177 280
Height HRLU mm 176 176 176 176 163 163 163 163 163 163 163 163
Height HVK mm 1340 1340 1340 1340 1343 1343 1343 1343 1343 1343 1343 1343
Height HRK mm 554 554 554 554 552 552 552 552 552 552 552 552
Height HVSL mm 1520 1520 1520 1520 1520 1520 1520 1520 1520 1520 1520 1520
Height HGAS mm 1570 1570 1570 1570 1620 1620 1620 1620 1620 1620 1620 1620
Length L mm 736 736 736 736 914 914 1317 1317 1317 1317 1317 1317
Length LKmm 594 594 594 594 845 845 1250 1250 1250 1250 1250 1250
1) Right-hand version
2) Left-hand version
3) Female thread (Table 7, page 18)
4) PN6 standard flange, EN1092 (Table 7, page 18)
Boiler size (output in kW)
Unit 751) 752) 100 1) 100 2) 150 1) 150 2) 200 1) 200 2) 250 1) 250 2) 300 1) 300 2)

Regulations
Condens 7000 F – 6720871560 (2019/11)
12
3.5 Installation location
NOTICE:
Frost damage!
 Install the heating system in a frost-free room.
DANGER:
Risk of fire through flammable materials or liquids.
 Never store flammable materials or liquids in the immediate vicinity
of the boiler.
NOTICE:
Boiler damage through contaminated combustion air or
contaminated air in the vicinity of the boiler!
 Never operate the boiler under dusty conditions or where the
atmosphere is contaminated with corrosive substances. These might
be, for example, paint shops, hairdressing salons and agricultural
operations involving the production of manure.
 Never operate boilers in locations where trichloroethene,
halogenated hydrocarbons or other corrosive chemical substances
are used or stored. Certain adhesives, solvents, cleaning agents and
paints, for example, contain these substances.
 Choose or prepare a suitable installation location.
3.6 Quality of the heating water
As pure water cannot be used for heat transfer, water quality is
important. Poor water quality can damage heating systems due to scale
formation and corrosion.
Water quality is an essential factor for increased efficiency, functional
reliability, long service life and for maintaining the constant operational
condition of a heating system.
 Observe the water quality requirements contained in the
"Water Quality Operator's Log".
 Warranty claims for the boilers will only be considered provided the
water quality requirements have been met and the operator’s log has
been maintained.
3.7 Pipework quality
NOTICE:
Boiler damage through corrosion.
 Never operate this boiler as a gravity-fed or as open vented heating
system unless working in combination with a hydraulic system
separator with a heat exchanger.
When using plastic pipes in the heating system, for example in
underfloor heating systems, ensure these are impermeable to oxygen in
accordance withDIN 4726/4729. If the plasticpipes donot complywith
these standards, they must be separated from the rest of the system
using a heat exchanger.
3.8 Combustion air quality
 To avoid corrosion, keep the supply of combustion air free of
corrosive substances (e.g. halogenated hydrocarbons that contain
chlorine or fluorine compounds).
 Keep the combustion air supply free of dust or use the “air filter”
accessory set.
3.9 Combustion air/flue gas connection/air vents
The installation location must be connected to the open air via the
required combustion air vents or air vents.
Installation locations must not be mechanically ventilated.
WARNING:
Danger to life due to poisoning!
Risk of poisoning due to escaping flue gases when the air supply is
inadequate.
 Make sure that a supply of air is available in every operating mode
through corresponding openings to the open air.
 Inform the user about the need for the openings.
The following applies for open flue operation:
 Provide a combustion air vent that complies with the minimum size
specified in tab. 4 1).
Table 4 Combustion air vents
 Never place objects in front of these vents.
 Ensure that combustion air vents are unobstructed at all times.
The following applies for balanced flue operation:
In order to provide ventilation, the installation location must have an air
vent leading to the open air of at least 150 cm2, or air vents of at least 2
x 75 cm2, or pipes to the open air with equivalent flow cross-sections.1)
At rated outputs above 100 kW, a top and bottom vent of 150 cm2
respectively is required. The vents must be enlarged by 1 cm2for each
kW over 100 kW.
 Never place objects in front of these vents.
 The air vents must always be unobstructed.
 Calculate dimensions of the air supply pipe in accordance with the
applicable regulations.
The boiler must be connected to a flue system.
 Observe country-specific and local regulations.
 Observe attached documentation "Information on flue gas routing".
For additional information on the combustion air/flue gas connection
see Chapter 5.6, page 17.
3.10 Frost protection
 Observe technical documentation of the installed control unit for
frost protection settings.
1) In addition to this, country-specific and local regulations must be observed.
Boiler size [kW] min. size of combustion air vent [cm2]
75 200
100 250
150 350
200 450
250 550
300 650

Transporting the boiler
13
Condens 7000 F – 6720871560 (2019/11)
4 Transporting the boiler
DANGER:
Risk to life through falling loads!
Falling loads can result in life-threatening injuries.
 Only transport the boiler by means of a crane, forklift truck pallet
truck or transport rollers.
 Only trained authorised personnel may undertake the handling
(e.g. by forklift truck) or lifting by means of a crane/hoist.
 Observe safety instructions relating to the lifting of heavy loads
(e.g. by means of a crane/hoist).
 Wear personal safety equipment (e.g. safety boots and protective
gloves).
 Protect the boiler against slippage by means of a transport strap.
CAUTION:
Risk of injury through carrying heavy loads!
 Only transport the boiler by means of a crane/hoist, forklift truck or
transport rollers.
NOTICE:
Boiler damage through impact!
The standard delivery of the boiler includes components that are
susceptible to impact damage.
 During handling protect all components against impact.
 Observe the transport markings on the packaging.
The boiler may be transported to the place of installation by crane/hoist,
forklift truck or pallet truck. Where possible, transport the boiler to the
installation location in its shipping packaging to protect it from
contamination.
4.1 Transporting the boiler by crane/hoist
NOTICE:
Boiler damage through means of transport!
Without the cardboard side strips, the boiler frame will deform through
lifting it by crane/hoist.
 When transporting the boiler do not remove the strips.
 Pass the lifting gear (round slings) through the boiler frame
(Fig. 5).
Fig. 5 Guide of crane lifting gear on the frame
Fig. 6 Transporting the boiler with crane (viewed from front left)
0010013902-001
0010012540-001

Transporting the boiler
Condens 7000 F – 6720871560 (2019/11)
14
4.2 Lifting the boiler off the pallet
NOTICE:
Boiler damage through impact!
The boiler is at risk of tipping over if it is pushed off the side of the pallet.
 Push the boiler off the pallet towards the burner or flue gas side.
 Depending on the pushing direction, remove corresponding fixing
strip (Fig. 7).
 Push the boiler of the pallet in the required direction.
 Avoid heavy impacts or setting the boiler down too hard.
The boiler is screwed to the pallet via the lower tie bar.
 Remove 4 safety screws.
Fig. 7 Detaching the boiler from the pallet (example for illustration
purposes)
[1] Fixing bar on the flue gas side
[2] Fixing strips on the burner side
4.3 Transporting the boiler on rollers
If the path to the boiler room is level, the boiler can also be rolled.
 Use at least 5 pipe sections of approx. 700 mm length
(Diameter R 1¼ ") as rollers.
 Position the pipes approx. 400 mm apart on the floor.
 Lift the boiler onto the pipe sections and carefully transport it to the
installation location.
You can also use commercially available transport rollers.
Fig. 8 Transporting the boiler on rollers (measurements in mm)
Fig. 9 Transporting the boiler on a furniture roller
If the boiler is not to be brought into operation:
 Protect boiler from contamination.
Dispose of packaging in an environmentally responsible manner.
0010012542-001
1 2
0010012541-001
0010013512-001

Installation
15
Condens 7000 F – 6720871560 (2019/11)
5 Installation
5.1 Installation location requirements
DANGER:
Risk of fire through flammable materials or liquids.
 Never store flammable materials or liquids in the immediate vicinity
of the boiler.
NOTICE:
Risk of material damage due to contaminated combustion air!
 Do not use cleaning agents that contain chlorine or halogenated
hydrocarbons (e.g. in spray cans, solvents and cleaning agents,
paints and adhesives).
 Do not store or use these substances in the boiler room.
 Keep the combustion air supply free of dust or use the “air filter”
accessory set.
NOTICE:
Material damage due to overheating!
Excessive ambient temperatures can result in heating system damage.
 Ensure the ambient temperature is above 0 °C and below 35 °C.
NOTICE:
Frost damage!
 Install the heating system in a frost-free room.
5.2 Preventing noise disturbance for end-users
 Where the boiler surroundings are sensitive to noise (e.g. residential
units), use the silencer options offered by the manufacturer
(flue gas silencer, expansion joints).
5.3 Wall clearances
When determining the installation location, take the clearances for the
flue gas routing and the connection pipe assembly into consideration
(Fig. 10).
Where applicable, allow extra wall clearances for additional
components, for example DHW cylinder, pipe connections or other
components on the flue gas side.
Fig. 10 Wall clearances at the installation location (right-hand version)
Fig. 11 Wall clearances at the installation location (left-hand version)
Table 5 Recommended and minimum wall clearances
Wall clearance [mm]
Dimension minimum recommended
A 600 1000
B 100 400
C1)
1) This clearance depends on the flue system installed.
––
D 800 1000
E1) 150 400
0010012544-001
0010013513-001

Installation
Condens 7000 F – 6720871560 (2019/11)
16
5.4 Levelling the boiler
NOTICE:
Boiler damage through insufficient load-bearing capacity of the
installation surface or unsuitable substrate!
 Ensure that the installation surface offers sufficient load-bearing
capacity.
Level the boiler horizontally to prevent air pockets forming inside the
boiler and to enable condensate to drain fully from the condensation
catch pan.
 Bring the boiler into its final position.
 Level the boiler horizontally by means of its adjustable feet and a
spirit level.
Fig. 12 Levelling the boiler
5.5 Installing the condensate pipes
DANGER:
Danger to life due to poisoning!
Siphons not filled with water can cause danger to life through escaping
flue gas.
 Filling the siphon with water.
Information regarding the condensates pipes:
 Carefully drain the condensate created inside the boiler and flue
(route the flue with a slope towards the boiler).
 Drain the condensate into the public sewerage system in accordance
with the requirements in your country.
 Observe regional regulations.
 Install condensate neutraliser (accessory) if necessary.
 Fit the condensate hose to the siphon connector using a hose clip.
 Guide the condensate hose through the opening in the back panel.
 Connect the condensate hose from the siphon with a slope to the
condensate neutraliser.
 If required, make the connection to the sewerage system in
accordance with the instructions for the condensate neutraliser and
locally applicable regulations.
 Install condensate neutraliser (accessory) in accordance with the
installation instructions.
 Fill the siphon below the flue outlet with roughly 3 litres of water.
Fig. 13 Installing the condensate hose
[1] Condensation catch pan
[2] Connecting the condensate hose to the siphon connector
0010012543-001
0010012545-001
1
2

Installation
17
Condens 7000 F – 6720871560 (2019/11)
5.6 Establishing the flue gas connection
For position and dimension of flue gas connection
Chapter 2.9, page 8.
DANGER:
Risk to life from escaping flue gas inside at the installation location!
 Ensure that the seal in the flue gas connection on the condensation
catch pan is fitted, undamaged and correctly inserted.
DANGER:
Risk to life through toxic exhaust gases escaping.
 Check all joints in the flue system to ensure they are correctly made,
secured and sealed.
NOTICE:
Damage to gaskets due to burred edges on the insertion ends of the
pipe parts!
 Make sure the insertion ends are free of burrs. If chamfering on site is
required, only do so in accordance with the manufacturer's
documentation.
Flue gas routing for multi-boiler systems (cascade, accessory).
These instructions only concern single boiler systems.
 Observe separate technical documentation (information on flue gas
routing and documentation on accessories).
 Only ask qualified specialists to calculate and size flue gas /
combustion air systems for multi-boiler systems.
 The flue system must prevent a reverse flow of flue gas through
boilers when they are not in use.
Only original accessoriesmay be used for positive pressure cascades
(conversion set and flue gas piping).
 Compare data plate with label on the retaining plate of the burner
control unit.
Observe all country-specific requirements when installing the flue
system.
The flue gas connection is supplied ex works for connection at the rear.
The flue gas connection can also be made at the top. The following
conversion measures are required for this:
with boiler rating 75-100 kW:
 Install 90°flue bend (accessory) outside the casing on the factory-
installed flue gas connection and install the flue mechanically
uncompressed.
With boiler rating 150-300 kW:
 Remove factory-installed 90° flue bend.
 Plug the straight pipe section (accessory) onto the connector on the
condensation catch pan and install the flue mechanically
uncompressed.
The flue system is to be carried out either in accordance with pressure
classification (EN 1443) H1 or pressure classification (EN 1443) P1
with additional mechanical impact stability up to 5000 Pa.
Table 6 Pressure classifications of the flue system
When installing the flue gas connection:
 Observe the installation instructions for the flue accessories.
 Observe national regulations.
 Makesurethatthe flue pipecross-sectionis calculatedin accordance
with all current regulations.
 Select the shortest possible route for the flue pipe and install it with
a slope towards the floor standing boiler.
 Fasten the flue securely at 1 m intervals.
 Ensure the connection is mechanically uncompressed, and that no
loads are transferred to the flue gas connection.
During planning and installation of the flue system, create a
layout that best favours the flue gas flow.
The wind barriers for the combustion air supply and the flue gas routing
must be installed on the same wall of the building.
The boiler must not be connected to any combined flue system with
motorised combustion systems (e.g. combined heat and power unit).
Centrocerin(scopeofdelivery) mustbe usedasalubricatingpastewhen
installing the flue system on the connector.
Class Leakage rate
I*s-1*m-2
Rated pressure
[Pa]
Mode of operation
P1 0.006 200 Positive pressure/
negative pressure1)2)
1) Positive pressure up to maximum 200 Pa
2) Usage only with additional mechanical impact stability up to 5000 Pa in the
connection piece
H1 0.006 5000 Positive pressure/
negative pressure3)
3) Positive pressure up to maximum 5000 Pa

Installation
Condens 7000 F – 6720871560 (2019/11)
18
5.7 Connecting the air supply (for room sealed operation)
NOTICE:
Damage to gaskets due to burred edges on the insertion ends of the
pipe parts!
 Make sure the insertion ends are free of burrs. If chamfering on site is
required, only do so in accordance with the manufacturer's
documentation.
The combustion air is supplied to the boiler either through an external
wall connection, a duct or a separate pipe in the duct.
The dimensions of the combustion air pipe must be calculated in
accordance with the current regulations.
An accessory set for room sealed operation is available for installation
inside the boiler casing (DN110 for boiler ratings 75-150 kW and
DN160 boiler ratings 200-300 kW).
 Only install the original accessories set envisaged for the
corresponding boiler rating.
We would recommend the installation of a silencer in the combustion air
pipe, subject to the location of the air inlet opening on the outside of the
building.
To avoid condensate formation in the combustion air pipe (inside and
outside), insulate the combustion air pipe.
For room sealed operation, both air intake and flue terminal positions
must be installed on the same side of the building, to prevent wind
effects.
 Mountadapter(Fig. 14,[6]) onthe intakeconnectorofthe burner
and secure with hinged pipe clip.
 Push elbow [3] onto the combustion air pipe [1].
 Mount the combustion air pipe [1] with supplied pipe clips
[2, 2x] on the frame.
 Screw the combustion air hose [5] onto the adapter [6].
 Push the combustion air hose [5] onto the elbow and secure with
hose clip [4].
 In cascade arrangements, ensure that the boiler is equipped with a
separate combustion air pipe.
Fig. 14 Accessory set for room sealed operation
[1] Combustion air pipe
[2] Pipe clip (2x)
[3] Elbow
[4] Pipe clip
[5] Combustion air hose
[6] Adapter with hinged pipe clip
5.8 Hydraulic connection
NOTICE:
Risk of damage to system due to leaking connections!
 Install all lines free from stress to the boiler connections.
 Use new gasket if screw fittings need to be undone.
 Only tighten flanges in the heating flow and return after the
connections have been made.
 Before installing the pipe connections, check connections and
gaskets on the boiler for possible damage.
Table 7 Water connection dimensions
Boiler flow (VK)/Boiler return (RK)
Boiler size [kW] Port
75-100 2" female thread (DN50)
150 PN6 standard flange EN1092 (DN50)
200-300 PN6 standard flange EN1092 (DN65)
0010012547-001
5
6
3
4
21

Installation
19
Condens 7000 F – 6720871560 (2019/11)
Fig. 15 Hydraulic connections at the boiler (the boiler shown has a
flanged connection, right-hand version)
[1] Boiler safety connection
[2] Boiler flow
[3] Boiler return
Position and dimensions of connections Chapter 2.9, page 8.
5.8.1 Connecting the flow
With flanged connection (Tab. 7, page 7):
 Insert a gasket between the flange on the boiler and the flange on the
flow pipe.
 Secure the flange connection with 4 bolts, washers and nuts.
5.8.2 Connecting the return
We recommend the on-site installation a system filter (accessory) in the
return to prevent contamination of the boiler by the water.
With flanged connection (Tab. 7, page 18):
 Insert a gasket between the flange on the boiler and the flange
on the return.
 Secure the flange connection with 4 bolts, washers and nuts.
Connecting the expansion vessel
To safeguard individual boilers, an accessory set (expansion vessel) can
be connected to the drain connection, in accordance with BS EN 12828.
 Observe the accessories installation instructions.
 Remove the drain valve mounted on the return (Fig. 7)
 Mount accessory set with gasket.
 Install expansion vessel to maintain the system pressure in the return
on site on the intake side of the pump.
Fig. 16 Disassembly of the drain valve (the boiler shown has a flanged
connection, right-hand version)
[1] Drain valve
Connecting the drain & fill valve on site
 Observe the accessories installation instructions.
 Topping up of the fill water must be done via a WRAS approved
method.
 Install drain valve in the return outside the boiler itself.
5.8.3 Installing the safety assembly on the flow (on site)
NOTICE:
System damage through incorrect installation!
 Fit the safety valve and automatic air vent valve or safetyassembly to
the safety connection on the flow.
The safety assembly (accessory) comprises an automatic air vent for
venting of the boiler (not the heating system) and a pressure gauge.
As an option, it may be converted for use with a safety valve (additional
accessory).
If these accessories are not used, a pressure relief valve, pressure gauge
and automatic air vent valve must generally be installed in the flow,
before of the first shut-off device.
Subject to operating pressure, different safety valves are required.
 Observe the accessories installation instructions.
Connection of safety set, 3 bar
 Seal the pressure relief valve at the threaded connection of the
heating flow using suitable sealants or supplied gaskets (Fig. 17).
 Fit the discharge pipe to the respective pressure relief valve
according to local regulations.
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Fig. 17 Safety set, 3 bar (illustration shows right-hand boiler setup)
[1] Manifold with taps and thermal insulation
[2] Twin nipple
[3] Extension
[4] Flow temperature sensor
[5] O ring
[6] Discharge pipe connection
Fig. 18 Safety set, 3 bar (illustration shows alternative installation
setup)
[1] Manifold with taps and thermal insulation
[2] Twin nipple
[3] Extension
[4] Flow temperature sensor
Connection of safety set, 4-6 bar
 Seal the pressure relief valve at the threaded connection of the
heating flow using suitable sealants or supplied gaskets (Fig. 19).
 Fit the discharge pipe to the respective pressure relief valve
according to local regulations.
Fig. 19 Safety set, 4 to 6 bar (illustration shows right-hand boiler
setup)
[1] Pressure relief valve 4 ... 6 bar
[2] Manifold with taps and flange
[3] fitting
[4] Extension
[5] Hexagon bolts
[6] Flat gasket
[7] Hexagon nuts
[8] O ring
[9] Discharge pipe connection
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