VIESSMANN VITODENS 222-F Gas Condensing Boiler Instruction Manual
- June 13, 2024
- VIESSMANN
Table of Contents
VITODENS 222-F Gas Condensing Boiler
Product Information
The Vitodens 222-F is a gas condensing storage combi boiler with
a 3.5 inch black/white screen. It has a power range of 1.9 to 32 kW
and is available in both natural gas and LPG versions. The product
is manufactured by VIESMANN and the model number is 5593275 GB. The
user manual is valid until March 2023.
Product Usage Instructions
Safety Instructions
-
Follow these safety instructions closely to prevent accidents
and material losses. -
Danger: This symbol warns against the risk of injury.
-
Please note: This symbol warns against the risk of material
losses and environmental pollution. -
Details identified by the word “Note” contain additional
information.
Target Group
These instructions are exclusively intended for qualified
contractors. Work on gas installations may only be carried out by a
registered gas fitter. Work on electrical equipment may only be
carried out by a qualified electrician. The system must be
commissioned by the system installer or a qualified person
authorized by the installer.
Regulations to be Observed
When working on the system, the following regulations must be
observed:
- National installation regulations
- Statutory regulations for the prevention of accidents
- Statutory regulations for environmental protection
- Codes of practice of the relevant trade associations
- Relevant country-specific safety regulations
Safety Instructions for Working on the System
When working on the system, please follow these safety
instructions:
-
Where gas is used as the fuel, close the main gas shut-off
valve and safeguard it against unintentional reopening. -
Isolate the system from the power supply by removing the
separate fuse or using a mains isolator, and ensure it is no longer
live. -
Safeguard the system against reconnection.
-
Wear suitable personal protective equipment when carrying out
any work.
Safety Instructions (Continued)
Additional safety instructions for working on the system:
-
Danger: Hot surfaces and fluids can lead to burns or scalding.
Before maintenance and service work, switch OFF the appliance and
let it cool down. Never touch hot surfaces on the boiler, burner,
flue system, or pipework. -
Please note: Spare and wearing parts that have not been tested
together with the system can compromise its function. Installing
non-authorized components and making non-approved modifications or
conversions can compromise safety and may invalidate the
warranty. -
Please note: Electronic assemblies can be damaged by
electrostatic discharge. Prior to commencing work, touch earthed
objects such as heating or water pipes to discharge static
loads. -
Please note: Repairing components that fulfill a safety
function can compromise the safe operation of the system. Replace
faulty components only with genuine Viessmann spare parts.
Safety Instructions for Operating the System
If you smell gas:
-
Danger: Escaping gas can lead to explosions which may result in
serious injury. -
Do not smoke. Prevent naked flames and sparks.
-
Never switch lights or electrical appliances on or off.
-
Close the gas shut-off valve.
-
Open windows and doors.
-
Evacuate any people from the danger zone.
-
Notify your gas or electricity supply utility from outside the
building. -
Have the power supply to the building shut off from a safe
place (outside the building).
Installation and service instructions
for contractors
Vitodens 222-F Type B2TF, 1.9 to 32 kW Gas condensing storage combi boiler
with 3.5 inch black/white screen Natural gas and LPG version
VIESMANN
VITODENS 222-F
5593275 GB 3/2023
Please keep safe.
Safety instructions Safety instructions
Please follow these safety instructions closely to prevent accidents and material losses.
Safety instructions explained
Danger This symbol warns against the risk of injury.
! Please note This symbol warns against the risk of material losses and
environmental pollution.
Note Details identified by the word “Note” contain additional information.
Target group
These instructions are exclusively intended for qualified contractors.
Work on gas installations may only be carried out by a registered gas fitter.
Work on electrical equipment may only be carried out by a qualified
electrician.
The system must be commissioned by the system installer or a qualified person
authorised by the installer.
Regulations to be observed
National installation regulations Statutory regulations for the prevention
of accidents Statutory regulations for environmental
protection
Codes of practice of the relevant trade associations
Relevant country-specific safety regulations
Safety instructions for working on the system
Working on the system
Where gas is used as the fuel, close the main gas shut-off valve and safeguard
it against unintentional reopening.
Isolate the system from the power supply, e.g. by removing the separate fuse
or by means of a mains isolator, and check that it is no longer live.
Safeguard the system against reconnection.
Wear suitable personal protective equipment when carrying out any work.
5593275
2
Safety instructions (cont.)
Safety instructions
Danger
Auxiliary components, spare and
Hot surfaces and fluids can lead to wearing parts
burns or scalding.
! Before maintenance and service work, switch OFF the appliance and let it
cool down. Never touch hot surfaces on the
boiler, burner, flue system or pipework.
Please note Spare and wearing parts that have not been tested together with the system can compromise its function. Installing non-authorised components and making non-approved modifications or conversions can
! Please note Electronic assemblies can be dam-
compromise safety and may invalidate our warranty.
aged by electrostatic discharge.
For replacements, use only original
Prior to commencing work, touch
spare parts supplied or approved by
earthed objects such as heating or
Viessmann.
water pipes to discharge static
loads.
Repair work
! Please note Repairing components that fulfil a safety function can compromise the safe operation of the system. Replace faulty components only with genuine Viessmann spare parts.
5593275
3
Safety instructions Safety instructions (cont.)
Safety instructions for operating the system
If you smell gas
Condensate
Danger Escaping gas can lead to explosions which may result in serious injury.
Do not smoke. Prevent naked
flames and sparks. Never switch lights or electrical appliances on or off.
Close the gas shut-off valve. Open windows and doors. Evacuate any people from
the danger zone. Notify your gas or electricity supply utility from outside
the building. Have the power supply to the building shut off from a safe place
(outside the building).
If you smell flue gas
Danger Flue gas can lead to life threatening poisoning. Shut down the heating
system. Ventilate the installation site. Close doors to living spaces to
prevent flue gases from spreading.
What to do if water escapes from the appliance
Danger If water escapes from the appliance there is a risk of electrocution.
Switch OFF the heating system at the external isolator (e.g. fuse box,
domestic distribution board).
Danger If water escapes from the appliance there is a risk of scalding. Never
touch hot heating water.
Danger Contact with condensate can be harmful to health. Never let condensate
touch your skin or eyes and do not swallow it.
Flue systems and combustion air
Ensure that flue systems are clear and cannot be sealed, for instance due to
accumulation of condensate or other external causes. Ensure an adequate supply
of combustion air. Inform system users that subsequent modifications to the
building characteristics are not permissible (e.g. cable/pipework routing,
cladding or partitions).
Danger Leaking or blocked flue systems, or an inadequate supply of combustion
air can cause life threatening poisoning from carbon monoxide in the flue gas.
Ensure the flue system is in good working order. Vents for supplying
combustion air must be non-sealable.
Extractors
Operating appliances that extract air to the outside (extractor hoods,
extractors, air conditioning units, central vacuum cleaning systems, etc.) can
create negative pressure. If the boiler is operated at the same time, this can
lead to a reverse flow of flue gas.
5593275
4
Safety instructions (cont.)
Danger The simultaneous operation of the boiler and appliances that exhausts
air to the outside can result in life threatening poisoning due to a reverse
flow of flue gas. Fit an interlock circuit or take suitable steps to ensure an
adequate supply of combustion air.
Safety instructions
5593275
5
Index Index
1. Information
2. Preparing for installation 3. Installation sequence
4. Commissioning, inspection, maintenance
5. System configuration (parameters)
6. Diagnosis and service checks
7. Troubleshooting 6
Disposal of packaging …………………………………………………………………. 8 Symbols
……………………………………………………………………………………. 8 Intended use
……………………………………………………………………………… 8 Product information
…………………………………………………………………….. 9 Vitodens 222-F, type B2TF
……………………………………………………….. 9 System examples ………………………………………………………………………. 9
Maintenance parts and spare parts ………………………………………………. 9 Viessmann Partnershop
…………………………………………………………… 9 Viessmann spare part app ………………………………………………………… 9
Handling ……………………………………………………………………………………. 11 Siting in recesses
……………………………………………………………………….. 11 Relocating the ON/OFF switch and electrical
connections (if necessary) …………………………………………………………………………………………. 11 Preparing
for boiler installation …………………………………………………….. 12 Safety assembly to DIN 1988
and EN 806 ………………………………….. 15
Siting the boiler ………………………………………………………………………….. 16 Type plate
………………………………………………………………………………. 16 Removing the front panel
…………………………………………………………….. 17 Connections on the heating water and DHW sides
…………………………. 18 DHW circulation connection (potable water) ……………………………….. 18
Filling the trap with water …………………………………………………………….. 18 Flue gas connection
……………………………………………………………………. 19 Gas connection …………………………………………………………………………..
20 Electrical connections …………………………………………………………………. 21 Opening the HMU wiring
chamber …………………………………………….. 21 On-site connections on the heat management unit
………………………. 22 Outside temperature sensor ! …………………………………………………. 23 Connecting
low loss header sensor ) ………………………………………. 23 Connecting the circulation pump
to P2 ……………………………………….. 24 Floating switching contact connection
………………………………………… 24 Checking the CAN bus terminator switch setting ………………………….
24 Power supply for accessories at plug lH/aBH (230 V ~) ………………… 25 Power
supply fÖ ……………………………………………………………………… 27 WiFi operational reliability and
system requirements ……………………. 27 Routing connecting cables/leads
……………………………………………….. 28 Closing the wiring chamber …………………………………………………………. 28
Fitting the front panel and programming unit ………………………………….. 29
Steps – commissioning, inspection and maintenance ………………………. 30
Calling up parameters …………………………………………………………………. 64 General
…………………………………………………………………………………….. 64 Boiler
………………………………………………………………………………………… 66 DHW …………………………………………………………………………………………
68 Heating circuit 1, Heating circuit 2, Heating circuit 3, Heating circuit 4
.. 71 Energy saving functions (setting only via software tool) ………………… 77
Frost protection configuration (setting only via software tool) ………… 79
Subscriber numbers of connected extensions ………………………………… 80
Service menu …………………………………………………………………………….. 82 Calling up the service menu
……………………………………………………… 82 Diagnosis ………………………………………………………………………………….. 82
Checking operating data …………………………………………………………… 82 Checking outputs (actuator
test) …………………………………………………… 83
Fault display on the programming unit …………………………………………… 85 Calling up fault
messages ………………………………………………………… 85
5593275
Index (cont.)
Index
8. Function description
9. Connection and wiring diagram
10. Commissioning/service reports
11. Specification 12. Disposal 13. Ordering individual parts 14. Certificates
15. Keyword index
Acknowledging the fault display ………………………………………………… 85 Calling up acknowledged
fault messages …………………………………… 85 Calling up fault messages from the fault
memory (message history) . 86 Deleting the message list
…………………………………………………………. 86 Overview of electronics modules
………………………………………………….. 87 Fault messages …………………………………………………………………………. 87
Further messages ………………………………………………………………………. 110 Service messages
…………………………………………………………………… 110 Status messages ……………………………………………………………………..
110 Warning messages ………………………………………………………………….. 111 Information
……………………………………………………………………………… 111 Repairs ……………………………………………………………………………………..
112 Shutting down the boiler …………………………………………………………… 112 Draining the boiler
on the heating water side ………………………………. 113 Status/checking/diagnosing the
internal circulation pump ……………… 113 Checking the temperature sensors
…………………………………………….. 115 Information on replacing the HMU heat management unit
and
BCU burner control unit ……………………………………………………………. 117 Checking the plate heat
exchanger ……………………………………………. 118 Removing the hydraulic unit and return pipe
……………………………….. 119 Replacing the power cable ……………………………………………………….. 120
Checking the fuse ……………………………………………………………………. 121
Control functions …………………………………………………………………………122 Heating mode
…………………………………………………………………………. 122 Venting program ………………………………………………………………………
122 Filling program ………………………………………………………………………… 122 Heating curve
…………………………………………………………………………. 122 Screed drying ………………………………………………………………………….
124 Raising the reduced room temperature ………………………………………. 126 DHW heating
…………………………………………………………………………….. 127 Heating the DHW loading cylinder from cold
……………………………….. 127 Reheating when DHW is drawn off ……………………………………………..127
Increased DHW hygiene ……………………………………………………………128 External heating circuit
hook-up (if installed) ………………………………….. 128
HMU heat management unit …………………………………………………………129 BCU burner control unit
………………………………………………………………. 131
…………………………………………………………………………………………………. 132
Specification ……………………………………………………………………………… 133 Electronic combustion control
unit ………………………………………………… 137
Final decommissioning and disposal …………………………………………….. 138
Ordering individual parts for accessories ………………………………………..139
Declaration of conformity …………………………………………………………….. 140 Manufacturer’s
certificate according to the 1st BImSchV [Germany] …. 140
…………………………………………………………………………………………………. 141
5593275
7
Information
Information Disposal of packaging
Please dispose of packaging waste in line with statutory regulations.
Symbols
Symbol
Meaning
Reference to other document containing further information
Step in a diagram: The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environmental pollution
Live electrical area
Pay particular attention.
The steps in connection with commissioning, inspection and maintenance are
found in the “Commissioning, inspection and maintenance” section and
identified as follows:
Symbol Meaning Steps required during commissioning
Not required during commissioning
Steps required during inspection
Not required during inspection
Steps required during maintenance
Not required during maintenance
Component must audibly click into place. or
Acoustic signal
Fit new component. or
In conjunction with a tool: Clean the surface.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in domestic waste.
Intended use
The appliance is intended solely for installation and operation in sealed
unvented heating systems that comply with EN 12828, with due attention paid to
CECS 215-2017 and the associated installation, service and operating
instructions. It is only designed for heating up heating water that is of
potable water quality.
Intended use presupposes that a fixed installation in conjunction with
permissible, system-specific components has been carried out.
The appliance is intended exclusively for domestic or semi-domestic use; even
users who have not had any instruction are able to operate the appliance
safely.
Commercial or industrial usage for a purpose other than heating the building
or DHW shall be deemed inappropriate.
Any usage beyond this must be approved by the manufacturer in each individual
case.
8
5593275
Information
Intended use (cont.)
Incorrect usage or operation of the appliance (e.g. the appliance being opened
by the system user) is prohibited and will result in an exclusion of
liability. Incorrect usage also occurs if the components in the heating system
are modified from their intended use (e.g. if the flue gas and ventilation air
paths are sealed).
Information
Product information
Vitodens 222-F, type B2TF
Gas condensing storage combi boiler with Inox-Radial heat exchanger and the
following integrated components: Modulating MatriX Plus burner for natural gas
and
LPG DHW loading cylinder, 100 l capacity Hydraulics with 3-way diverter valve
and variable
speed high efficiency circulation pump Weather-compensated control unit
Diaphragm expansion vessel (18 l capacity)
The selected gas category in the delivered condition and the associated nominal gas pressure are given on the boiler type plate. The type plate also shows the other gas types and pressures with which the boiler can be operated. A conversion within the stated natural gas groups is not required. For conversion to LPG (without conversion kit), see “Commissioning, inspection and maintenance”. The Vitodens 222-F may only be delivered to the countries specified on the type plate. For deliveries to other countries, approved contractors must arrange individual approval on their own initiative and in accordance with the law of the country in question.
System examples
System examples with hydraulic and electrical connection diagrams and function descriptions are available to help setting up the heating system.
Detailed information regarding system examples: www.viessmann-schemes.com
Maintenance parts and spare parts
Maintenance parts and spare parts can be identified and ordered directly
online.
Viessmann Partnershop Login: https://shop.viessmann.com/
Viessmann spare part app www.viessmann.com/etapp
9
5593275
Information
Information Maintenance parts and spare parts (cont.)
10
5593275
5593275
Installation
Handling
!
Please note Prevent damage to the appliance during han-
dling.
Never set the appliance down on its front or
sides, or apply any load to these surfaces. If
possible, leave the boiler on the pallet during
handling.
Preparing for installation
Siting in recesses
In the delivered condition, the ON/OFF switch and the electrical connections are located on the left-hand side of the appliance. The condensate drain can be routed out of either the right-hand or left-hand side of the appliance.
When installing in recesses, ensure that accessibility is guaranteed (recommended wall clearance 100 mm). Otherwise relocate the ON/OFF switch and electrical connections. The ON/OFF switch can be relocated to the right-hand side or the top. The electrical connections can be relocated to the right-hand side.
Relocating the ON/OFF switch and electrical connections (if necessary)
82. 3.
5. 4.
Fig. 1
11
Installation
5593275
Preparing for installation Relocating the ON/OFF switch and electrical… (cont.)
Open the electrical wiring chamber of the HMU. Disconnect the cable of the
ON/OFF switch and remove. See electrical connections.
1. Unclip the ON/OFF switch from the frame.
2. Remove the ON/OFF switch with the cable.
3. Clip the ON/OFF switch into the corresponding opening at the top or on the
right-hand side. Reconnect the cable in the HMU wiring chamber and relieve
strain.
4. Release plug of electrical connections by turning it a quarter turn.
5. Insert plug into the opening on the right-hand side and secure in place by
turning it a quarter turn.
Note From 09/2021, the plug for the electrical connections is inside the
appliance.
Preparing for boiler installation
Use a connection set available as an accessory to make the connections on the gas and water sides. The following overview shows sample connection sets for surface mounting, with connection to the top or side.
Preparing connections on site: Connection set installation instructions
Attaching accessories Before final siting, attach all of the accessories that are to be mounted from the back of the boiler (e.g. connection set). First fit the connection set for the DHW circulation pump.
Note Fit safety equipment in accordance with the national regulations.
!
Please note To prevent appliance damage,
connect all pipework free of load and torque
stress.
12
Preparing for boiler installation (cont.)
470 410 398
362
K 100
50
DE
F C
B A
A B
C F
D E
1056
1111
1221
1276
1440
1452
1488
1503
1563
Preparing for installation
50 Ø 100 Ø 60
G H 46
Installation
1400 1166
1001
946
600 735
330
220
D
55
E
50 206
595
A
B
F
C
67
600
Fig. 2
A Heating flow R ¾ B DHW R ½ C Gas connection R ½ D Cold water R ½ E Heating
return R ¾ F DHW circulation R ½ (separate accessories) G Plug for electrical
accessories
Note Depending on the version, the plug is inside the appliance.
H Condensate drain to the side K Area for electrical cables (on-site junction
box)
Note All height dimensions have a tolerance of +15 mm on account of the
adjustable feet.
13
5593275
Installation
20 >3°
Preparing for installation Preparing for boiler installation (cont.)
L
M N
Fig. 3
1. Prepare the connections on the heating water side. Thoroughly flush the heating system.
Note Should an additional expansion vessel be required on site, connect this vessel in the heating return.
2. Prepare the connections on the DHW side. Install the safety assembly (accessories or on-site provision) in accordance with EN 806 [or local regulations] in the cold water supply. See the following chapter. Recommendation: Install the safety valve above the DHW cylinder to protect it against contamination, scaling and high temperatures. c: According to W3 “Principles for creating potable water installations”, safety valves must be drained directly via a visible unrestricted drain or via a short outlet line to the drain network.
Note Do not connect the DHW cylinder safety valve to hose L. Do not change the position of hose L (used for ventilation).
3. Route condensate hose M to side opening H (see diagram on page 13). Connect condensate hose with a fall to the on-site waste water pipe or trap.
Note The on-site waste water pipe must have min.
Ø 40 mm to allow inflow with no risk of backing up. Keep the drainage route
from the appliance as short as possible. Do not connect the drain hose
directly to the onsite waste water pipe. To prevent bacterial contamination
from the drain network, observe a minimum clearance of 20 mm (see diagram).
!
Please note The drain hose is used to route away any
hot water discharged from the safety valve.
Lay and secure the drain hose in a way that
prevents any risk of scalding.
Note Route the onward drain line inside the building as far as possible. If the onward drain line is routed outside the building: Use a min. Ø 30 mm line. Protect the line from frost. Keep the line as short as possible.
5593275
14
5593275
Installation
Preparing for boiler installation (cont.)
Preparing for installation
4. Prepare gas connection to TRGI [or local regulations].
5. Prepare the electrical connections. The appliance is delivered fitted with
a power cable (approx. 1.5 m long). Power supply: 230 V, 50 Hz, fuse rating
max. 16 A Note Connect the power cable to the electricity supply using a fixed
connection. Accessory cables: 0.75 mm2 flexible PVC cable with required number
of cores for external connections.
Note Route external pipes through guide N.
Safety assembly to DIN 1988 and EN 806
A B
D E F GH D
DHL M D N K
K
C O
Fig. 4
A Safety assembly to DIN 1988 and EN 806 (accessories for connection sets for
flush mounting)
B Safety valve C Visible discharge pipe outlet point D Shut-off valve E Flow
regulating valve (installation recommended) F Pressure gauge connector G Non-
return valve
H Drain outlet K Cold water L Drinking water filter M Pressure reducer to DIN
1988-2, Dec. 1988 issue N Non-return valve/pipe separator O Cold water
connection at connection set (accesso-
ries)
15
Installation sequence Siting the boiler
Installation
5593275
- Fig. 5
Type plate
Note The type plate is attached to cover panel A in the appliance. See page
42.
Additional type plate with access code (QR code) marked with “i”
The type plate of the heat generator contains extensive product information
and an appliance-specific QR code marked with “i” for direct access to
product-specific information and product registration on the internet. The QR
code contains the credentials for the registration and product information
portal, and the 16-digit serial number.
16
Attaching the additional type plate
1. Take the additional type plate from the documentation supplied with the
boiler. Note The documentation with the additional type plate and QR code
marked with “i” can be found on top of the appliance.
5593275
Installation
Siting the boiler (cont.)
2. In consultation with the system user, affix the additional type plate to
the outside of the appliance. The additional type plate must be visible to the
flue gas inspector. Affix another QR code to the installation and service
instructions.
Removing the front panel
-
Fig. 6
Installation sequence
17
Installation
5593275
Installation sequence Connections on the heating water and DHW sides
AB
CD E
E
A
D
B
C
C
B
D
A
E
Fig. 7 Shown with connection sets for surface mounting (accessories)
A Heating flow R ¾ B DHW R ½ C DHW circulation R ½ (separate accessories)
D Cold water R ½ E Heating return R ¾
DHW circulation connection (potable water)
DHW circulation connection with DHW circulation pump connection set
(accessories)
Separate installation instructions
Filling the trap with water
Note If there is a risk of frost, only fill the trap just before
commissioning.
Pour at least 0.3 l of water into the flue gas connection.
Danger During commissioning, flue gas may escape from the condensate drain. Always fill the trap with water before commissioning.
Fig. 8 18
5593275
Installation
Flue gas connection
Installation sequence
Connect the flue gas/ventilation air pipe. Flue system installation instructions
Note The “System certification” and “Skoberne GmbH flue system” labels enclosed with the technical documentation may only be used in conjunction with the Viessmann flue system made by Skoberne.
Connecting several Vitodens to a shared flue system
Installation instructions for back draught safety device
If connecting multiple Vitodens to a common flue system at positive pressure using routing types C10, C11, C13, C14: Install a back draught safety device (accessories) in the flue gas connection and the mixing shaft of the burner on each boiler. Installing the back draught safety devices:
Converting the control unit for use with a shared flue system: In the
commissioning assistant, select the “Multiple
connections” setting under “Flue system type”.
Do not carry out commissioning until the following conditions are met: Free
passage through the flue gas pipes. Flue system with positive pressure is gas-
tight. Inspection port covers checked for secure and tight
seating. Apertures for ensuring sufficient combustion air sup-
ply are open and cannot be closed off. Note In open flue operation, install a
rodent guard grille on the supply air aperture. Applicable regulations on
installing and commissioning flue systems have been followed. Visual
inspection of the flue gas connection. Note The use of lubricant prevents the
gasket from shifting when the flue pipe is installed. When using a straight
flue pipe, check that the inner ventilation air pipe is correctly fitted.
Danger Leaking or blocked flue systems or an insufficient supply of combustion air cause life threatening poisoning due to carbon monoxide in the flue gas. Ensure the flue system is in good working order. Vents for interconnected combustion air supply must be non-closable in open flue operation. Prevent condensate drainage via a wind protector.
19
Installation sequence Gas connection
A
Installation
5593275
A
A
Fig. 9
1. If the gas connection has not been fitted previously, seal gas shut-off valve A to the gas connection. When carrying out any work on gas connection fittings, counterhold with a suitable tool. Never transfer any forces to the internal components.
3. Purge the gas line.
Information on operation with LPG Install an external safety solenoid valve if the boiler is installed below ground level. An EM-EA1 extension (accessories) is required to connect the safety solenoid valve.
2. Check for leaks.
Danger Escaping gas leads to a risk of explosion. Check all connections on the gas side (also inside the appliance) for tightness.
Note Only use suitable and approved leak detection agents (EN 14291) and devices for the tightness test. Leak detection agents with unsuitable constituents (e.g. nitrides, sulphides) can cause material damage. Remove residues of the leak detection agent after testing.
!
Please note Excessive test pressure will damage the
boiler and gas solenoid valve.
Max. test pressure 150 mbar (15 kPa). If a
higher pressure is required for leak tests,
disconnect the boiler and the gas solenoid
valve from the main supply pipe (undo the
fitting).
20
Electrical connections
Opening the HMU wiring chamber
!
Please note Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing any work, touch earthed
objects, such as heating or water pipes to dis-
charge static loads.
1. 2. 2x
Installation sequence
5593275
Installation
Fig. 10 Note For further information on the connections, see the following chapters.
M
M
1~ 1~
AB
65432 1 C
65432 1
40
156 156 P1 P2
96
Fig. 11
Connections to 230 V~ plugs fÖ Power supply lH 230 V input, floating
Output 230 V aBH Switched power outlet
74 5 1
91 91
P1 Cylinder loading pump (connected in the delivered condition)
21
Installation
5593275
Installation sequence Electrical connections (cont.)
P2 230 V parametrisable output:
DHW circulation pump or heating circuit pump for
heating circuit without mixer (in systems with low
loss header) A BCU burner control unit power supply (connected
in the delivered condition) B Power supply for accessories C Plug located
externally on the right or left-hand
side of the appliance (see also following diagram)
Note Depending on the version, the plug is inside the appliance.
Connections to extra low voltage (ELV) plugs ! Outside temperature sensor
Terminals 1 and 2 on plug C % Cylinder temperature sensor (connected in the
delivered condition) jF PlusBus
Terminals 5 and 6 on plug C lA CAN bus
Information on connecting accessories When connecting accessories observe the
separate installation instructions provided with them.
On-site connections on the heat management unit
65432 1 C
65432 1
Fig. 12
C Plug located externally on the right or left-hand side of the appliance
(supplied separately)
Required plugs are supplied in separate packaging. Provide strain relief for
cables in the wiring chamber of the HMU heat management unit using cable ties.
22
Electrical connections (cont.)
From 09/2021, plug for electrical connections
inside the appliance
Installation sequence
2.
5593275
Installation
65432 1 C
65432 1
Fig. 13
Route the plug with power cable (required plugs are supplied in separate packaging) through the cable guide on the back of the appliance.
- Fig. 14 Use cable ties to apply strain relief to cables in the heat management unit wiring chamber. Note Insert the cable ties with body-bound rivet (packaged separately) into the mounting plate on the plug.
Outside temperature sensor !
Fitting location for outside temperature sensor
North or north-westerly wall, 2 to 2.5 m above ground level; in multi storey
buildings, in the upper half of the second floor
Not above windows, doors or vents
Not immediately below balconies or gutters Never render over
Outside temperature sensor connection
2-core lead, length up to 35 m with a cross-section of 1.5 mm2
Connecting low loss header sensor )
The low loss header sensor is connected to accessory extension EM-P1 or
EM-M1/MX (ADIO electronics module).
Installation instructions for extension EM-P1 or EM-M1/MX
23
Installation
5593275
Installation sequence Electrical connections (cont.)
Connecting the circulation pump to P2
M 1~
A
Information on priority of connection options: If heating circuit pump for
heating circuit without
mixer A1 is installed: Then connect DHW circulation pump to an EM-P1 extension
(accessories). If no heating circuit pump for heating circuit without mixer A1
is connected: Connect DHW circulation pump to output P2.
B
Fig. 15
A Circulation pump B Plug P2 on HMU heat management unit
Possible functions: Heating circuit pump for heating circuit without mixer
A1 in connection with low loss header and heating circuits with mixer Heating
circuit pump for heating circuit without mixer A1, without low loss header and
with no other heating circuits (max. 1 heating circuit in the system). DHW
circulation pump Connect DHW circulation pumps with standalone functions
directly to the 230 V supply.
The function is selected in the commissioning assistant by selecting the connected component.
Specification Rated current
Rated voltage
1 A 230 V ~
Floating switching contact connection
Connection at plug lH
One of the following functions can be connected: External demand External
blocking DHW circulation pump external demand (pushbutton
function, pump runs for 5 min). Not for Vitodens 222-W. Room temperature
controller (room thermostat) In conjunction with operating mode Continuous
operation with room temperature controller (not for Vitodens 3xx) For external
heating circuit hook-up (if installed), see chapter “External heating circuit
hook-up”. Not for Vitodens 3xx.
A
1 L ? N lH
Fig. 16 A Floating contact Assigning functions in the commissioning assistant
See commissioning assistant in “Commissioning”.
Checking the CAN bus terminator switch setting
The CAN bus resistor is switched using switch A in the wiring chamber.
24
5593275
Installation
Electrical connections (cont.)
Installation sequence
ON
1
91 91
A
Fig. 17
If the device is not integrated into a CAN bus sys-
tem: Switch A must not be set to “ON”.
If the device is integrated into a CAN bus system and
is located at the beginning or end of this system (not
in the middle) of the CAN bus system (connected to only one plug lA): Set switch A to “ON”.
A
C
C
ON
91 91
B
B
Fig. 18
A Heat generator / HMU heat management unit
B CAN bus cable
C CAN bus other subscribers
If the device is integrated into a CAN bus system and
is not located at the beginning or end of the CAN bus system (both plugs lA connected): Do not set
switch A to “ON”.
C
A
C
B
Fig. 19
ON 91 91
B
Power supply for accessories at plug lH/aBH (230 V ~)
When positioned in wet rooms, accessories outside the wet area must not be connected to the power supply at the HMU heat management unit. If the boiler is not sited in a wet room, the power supply for accessories can be connected directly to the HMU heat management unit. This connection is switched directly with the ON/OFF switch of the appliance.
If the total system current exceeds 6 A, connect one or more extensions directly to the mains supply via an ON/OFF switch (see next chapter).
25
Installation
Installation sequence Electrical connections (cont.)
Power supply and PlusBus connection of accessories
Power supply of all accessories at the HMU heat management unit
A
B
C
D
74 40 96/156 74 74 40A 40 74 74 40A 40 74 74 40A 40
E
Fig. 20
Some accessories with direct power supply
A
B
C
D
74 40 96/156 74 74 40A 40 74 74 40A 40 74 74 40A 40
E
Fig. 21
A
HMU heat management unit, heat generator
B
Mixer extension kit (ADIO electronics module)
C
Mixer extension kit (ADIO electronics module)
D
EM-EA1 extension (DIO electronics module)
and/or EM-S1 extension (ADIO or SDIO/
SM1A electronics module)
PlusBus system length max. 50 m for 0.34 mm2 cable cross-section and unshielded cable. If the current flowing to the connected working parts (e.g. circulation pumps) is higher than the fuse rating of the relevant accessory, only use the output concerned to control an on-site relay.
Accessories
EM-M1, EM-MX mixer extension kit EM-EA1 extension EM-S1 extension (not for
Vitodens 222-F, 222-W and 333-F)
Internal fuse protection 2 A
2 A 2 A
E
ON/OFF switch
fÖ
Mains input
fÖA Power outlet
jF
PlusBus
lH/aBH Power outlet on HMU heat management unit
Danger Incorrect wiring can lead to serious injury from electrical current and
result in appliance damage. Route extra low voltage (ELV) leads < 42 V
separately from cables > 42 V/230 V~. Only strip the minimum of insulation
from
cables as close as possible to the terminals and bundle tightly to the
corresponding terminals. Secure cables with cable ties.
5593275
26
Electrical connections (cont.)
Installation sequence
5593275
Installation
Power supply fÖ
Danger Incorrectly executed electrical installations can result in injuries
from electrical current and damage to the appliance.
Connect the power supply and implement all safety measures (e.g. RCD circuit)
in accordance with the following regulations: IEC 60364-4-41 IEEE Wiring
Regulation; BS 7671:2018 Connection conditions of the local grid opera-
tor
Install an isolator in the power cable to provide omnipolar separation from
the mains for all active conductors, corresponding to overvoltage category III
(3 mm) for complete isolation. The isolator must be fitted in the permanent
electrical installation, in line with installation requirements. We also
recommend installing a pulse current-sensitive RCD (RCD class A ).
Connect the power cable to the electricity supply using a fixed connection.
If the power supply to the appliance is connected with a flexible power cable,
ensure that the live conductors are pulled taut before the earth conductor in
the event of strain relief failure. The length of the earth conductor wire
will depend on the design.
Max. fuse rating 16 A.
Danger The absence of system component earthing can lead to serious injury
from electric current if an electrical fault occurs. The appliance and
pipework must be connected to the equipotential bonding of the building.
WiFi operational reliability and system requirements
WiFi router system requirement WiFi router with activated WiFi:
The WiFi router must be protected by a sufficiently secure WPA2 password. The
WiFi router must always have the latest firmware update. Do not use
unencrypted connections between the heat generator and the WiFi router.
Internet connection with high availability: Flat rate (flat rate tariff
without restriction on time or data volume) Dynamic IP addressing (DHCP,
delivered condition) in the network (WiFi): Have this checked on site by an IT
expert prior to commissioning. Arrange for set up if required. Set routing and
security parameters in the IP network (LAN). Enable the following ports for
direct outgoing connections: Port 80 Port 123 Port 443 Port 8883 Have
this checked on site by an IT expert prior to commissioning. Set up enabling
if required.
Wireless signal range of WiFi connection
The range of wireless signals may be reduced by walls, ceilings and interior
fixtures. These weaken the wireless signal, causing poor reception due to the
following circumstances. On their way between transmitter and receiver, wire-
less signals are damped, e.g. by air or when penetrating walls. Wireless
signals are reflected by metallic objects, e.g. reinforcements embedded in
walls, metal foil of thermal insulation and thermal glazing with metallised
thermal vapour deposit. Wireless signals are isolated by service ducts and
lift shafts. Wireless signals are disrupted by devices that also operate with
high frequency signals. Maintain a distance of at least 2 m from these
devices: Computers Audio and video systems Devices with active WiFi
connection Electronic transformers Pre-ballasts Install the heat generator
as close as possible to the WiFi router to ensure a good WiFi connection. The
signal strength can be displayed on the programming unit: See operating
instructions.
Note The WiFi signal strength can be increased with commercially available WiFi repeaters.
27
Installation
5593275
Installation sequence Electrical connections (cont.)
Angle of penetration
The reception quality remains best if radio signals hit the walls vertically.
Depending on the angle of penetration, the effective wall thickness changes
and so does the extent to which the electromagnetic waves are damped.
Flat (unfavourable) angle of penetration
A
Ideal angle of penetration
A
C B
C
Fig. 23
B
A WiFi router B Heat generator C Wall
Fig. 22
A WiFi router B Heat generator C Wall
Routing connecting cables/leads
!
Please note If connecting cables/leads come into contact
with hot components, they will be damaged.
When routing and securing cables/leads on site,
ensure that the maximum permissible tempera-
tures for these cables/leads are not exceeded.
Closing the wiring chamber
3. 2. 2x
Fig. 24 28
Fitting the front panel and programming unit
1. 2.
A
Fig. 25 Lightguide A at the bottom
Installation sequence
5593275
Installation
29
Commissioning, inspection, maintenance Steps – commissioning, inspection and
maintenance
Commissioning steps Inspection steps Maintenance steps
Page
···
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·
·
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·
·
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·
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·
·
·
·
·
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·
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·
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30
1. Filling the trap with water…………………………………………………………………………………….. 32 2. Removing the front panels…………………………………………………………………………………… 32 3. Moving the programming unit to the maintenance position…………………………………… 32 4. Commissioning the system………………………………………………………………………………….. 33 5. Filling the heating system……………………………………………………………………………………. 37 6. Venting the boiler………………………………………………………………………………………………… 39 7. Venting the heating system………………………………………………………………………………….. 39 8. Filling the DHW cylinder on the DHW side……………………………………………………………. 40 9. Checking the connections on the heating water and DHW sides…………………………… 40 10. Naming the heating circuits…………………………………………………………………………………. 40 11. Checking the gas type…………………………………………………………………………………………. 41 12. Converting the gas type (only for operation with LPG)………………………………………….. 41 13. Checking the static pressure and supply pressure……………………………………………….. 42 14. Function sequence and possible faults………………………………………………………………… 43 15. Setting the max. heating output……………………………………………………………………………. 44 16. Activating screed drying……………………………………………………………………………………… 44 17. Adjusting the pump rate of the integral circulation pump……………………………………… 45 18. Checking the balanced flue system for leaks (annular gap check)…………………………. 47 19. Removing the burner…………………………………………………………………………………………… 48 20. Checking the burner gasket and burner gauze assembly………………………………………. 49 21. Checking and adjusting the ignition and ionisation electrodes……………………………… 50 22. Checking the back draught safety devices……………………………………………………………. 50 23. Cleaning the heating surfaces……………………………………………………………………………… 51 24. Checking the condensate drain and cleaning the trap…………………………………………… 52 25. Installing the burner…………………………………………………………………………………………….. 53 26. Checking the neutralising system (if installed) 27. Checking the anode connection and anode earth current with an anode tester……… 54 28. Draining the boiler on the DHW side…………………………………………………………………….. 55 29. Cleaning the loading cylinder………………………………………………………………………………. 56 30. Checking and replacing the protective magnesium anode (if necessary)………………. 57 31. Re-assembling and filling the loading cylinder……………………………………………………… 58 32. Checking the diaphragm expansion vessel and system pressure………………………….. 59 33. Checking the pre-charge pressure and the DHW expansion vessel (if installed)…….. 60 34. Checking the safety valve function 35. Checking the electrical connections for firm seating 36. Checking gas equipment for leaks at operating pressure……………………………………… 60 37. Checking the combustion quality…………………………………………………………………………. 60 38. Checking the flue system for unrestricted flow and leaks 39. Checking the external LPG safety valve (if installed)
5593275
Commissioning, inspection, maintenance Steps – commissioning, inspection and… (cont.)
Commissioning steps Inspection steps Maintenance steps
Page
· ·
· ··· ·
40. Matching the control unit to the heating system…………………………………………………… 62 41. Adjusting heating curves…………………………………………………………………………………….. 62 42. Calling up and resetting the maintenance display…………………………………………………. 62 43. Fitting the front panel………………………………………………………………………………………….. 63 44. Instructing the system user…………………………………………………………………………………. 63
5593275
31
Commissioning, inspection, maintenance Filling the trap with water
!
Please note Only commission the appliance with a fully filled
trap.
Check that the trap has been filled with water.
Pour at least 0.3 l of water into the flue gas connection.
!
Please note During commissioning, flue gas may escape
from the condensate drain.
Always fill the trap with water before commis-
sioning.
Fig. 26
Removing the front panels
See page 17, steps 1 to 5
Moving the programming unit to the maintenance position
To carry out various maintenance jobs, move the programming unit downwards.
5593275
32
Commissioning, inspection, maintenance Moving the programming unit to the
maintenance… (cont.)
1. 2.
- Fig. 27
Commissioning the system
Commissioning assistant
1. Open the gas shut-off valve.
Commissioning via software tool
2. If the appliance has not been switched on yet: Turn on the ON/OFF switch. The commissioning assistant starts automatically. If the appliance has already been switched on: See chapter “Calling up the commissioning assistant at a later point”.
Note Apps for commissioning and service are available for iOS and Android devices.
3. For further steps, see commissioning assistant in the following overview.
Note Once the commissioning assistant has finished, run an actuator test to
check that the actuators are connected correctly and working properly.
Note Depending on the type of heat generator, connected accessories and other
settings, not all menu points will be displayed and not all functions are
available. See the technical guide or hydraulic scheme browser.
The appliance automatically switches on the WiFi access point.
1. Open the gas shut-off valve.
2. and OK should be pressed simultaneously for approx. 4 s.
3. Use / to select “Connect with software tool” and confirm with OK.
4. Follow the instructions in the app.
33
5593275
Commissioning, inspection, maintenance Commissioning the system (cont.)
Commissioning assistant Explanations and references sequence
Commissioning
Language
With programming unit
If commissioning is to be carried out at the programming unit of the heat generator.
Trade fair mode Off On
Only for demonstration purposes. Do not select for normal heating mode.
Units Temperature Length Pressure
Select the required units of measurement (e.g. °C or °F)
Date Format
Time Format Time changeover
System pressure
Set value Area
Select the set system pressure, e.g. 1.5 bar. Select the range within which the system pressure can fluctuate around the set value, e.g. +/-0.5 bar. Example: If the value falls below the set range for a certain period of time (set value [1.5 bar] – range [0.5 bar] = 1.0 bar), fault message F.74 or warning message A.11 is displayed.
Filling Venting
Filling: See chapters “Filling the heating system” and “Venting the heating system”.
Gas type
If operating with LPG, switch to “LPG”
Flue system
Single connection
Only one heat generator is connected to the flue system (factory setting).
Multiple connections
Several heat generators are connected to the flue system at positive pressure (only suitable for systems that run on natural gas).
After confirmation with OK, an automatic test of the flue gas temperature sensor is carried out. See the following chapter.
Building type
Detached house
One shared holiday program and time program for DHW heating
Apartment building
Holiday program is set separately (room temperature-dependent operation not possible)
Continue in the commissioning assistant with Yes or end commissioning with No.
Operating mode
Weather-compensated The outside temperature sensor must be connected.
Constant mode
Operation with constant flow temperature
Room temperature-dependent
A room temperature controller/room thermostat (accessories) must be connected to plug 96. Only one heating circuit without mixer in the system (only available for detached houses).
5593275
34
Commissioning the system (cont.)
Commissioning, inspection, maintenance
Commissioning assistant sequence System scheme
Heating circuit 1
Heating circuit 2, 3, 4 DHW Not installed Cylinder with one sensor Cylinder
with one sensor
and DHW circulation pump DHW comfort function Loading cylinder with one sensor
Loading cylinder with one sensor and DHW circulation pump Loading cylinder
with 2 sensors Loading cylinder with 2 sensors and DHW circulation pump
Explanations and references
Heating circuit without mixer or heating circuit without mixer with external
hook-up or Heating circuit without mixer with pump (without low loss header
and without further heating circuits, max. 1 heating circuit in the system)
for e.g. fixed value control station. Heating circuits with mixer or heating
circuit with mixer with external hook-up Settings for DHW heating according to
the system components System without DHW heating System with DHW cylinder with
1 cylinder temperature sensor System with DHW cylinder with 1 DHW cylinder
temperature sensor and DHW circulation pump
Only for gas condensing combi boilers (not adjustable) Gas condensing storage
combi boiler with integral loading cylinder
Gas condensing storage combi boiler with integral loading cylinder and DHW
circulation pump
Gas condensing storage combi boiler or gas/solar condensing storage combi
boiler with integral loading cylinder Gas condensing storage combi boiler or
gas/solar condensing storage combi boiler with integral loading cylinder and
DHW circulation pump
Note DHW circulation pump not possible with Vitodens 222-W.
Low loss header/buffer cyl- Settings for the consumer circuits according to the system components inder
Not installed
There is no low loss header or heating water buffer cylinder in the system.
Low loss header, heating System with low loss header, without DHW heating only
DHW heating upstream DHW heating with e.g. separate DHW cylinder connected upstream of the low
of low loss header
loss header
DHW heating down-
DHW heating with e.g. separate DHW cylinder connected downstream of the
stream of low loss head- low loss header
er
Buffer cylinder, heating System with heating water buffer cylinder, without DHW heating only
DHW heating upstream DHW heating with e.g. separate DHW cylinder connected upstream of the
of buffer cylinder
heating water buffer cylinder
DHW heating down-
DHW heating with e.g. separate DHW cylinder connected downstream of the
stream of buffer cylinder heating water buffer cylinder
Solar Note Not for Vitodens 222-W, type B2LF and Vitodens 222-F, type B2SF
Solar thermal system connected to heat generator via solar extension (ADIO,
SDIO/SM1A electronics module) Setting subject to the design of the solar
thermal system
Solar extension installation and service instructions
5593275
35
Commissioning, inspection, maintenance Commissioning the system (cont.)
Commissioning assistant Explanations and references sequence
No solar function With DHW heating
With central heating backup
Only adjustable for SDIO/SM1A electronics module (not for Vitodens 242-F)
With 2nd cylinder preheating
Only adjustable for SDIO/SM1A electronics module (not for Vitodens 242-F)
With thermostat function Only adjustable for SDIO/SM1A electronics module (not for Vitodens 242-F)
Plug 96
Function selection if a contact has been connected to plug 96 of the HMU heat management unit
No function
External demand, DHW Pushbutton function, DHW circulation pump runs for 5 min. circulation pump
External demand
Heat generator demand with adjustable set flow temperature (parameter 528.0) and set primary circuit pump speed (parameter 1100.2)
External blocking
EM-EA1 (DIO) function
If an EM-EA1 extension (DIO electronics module) is connected as a function extension Selection of the connected function according to the table in the installation instructions for the EM-EA1 extension
Remote control
Set the type of remote control and subscriber no. as assignment to the respective heating circuit. Up to 3 heating circuits can be assigned to one remote control unit. It is not possible for several remote control units to act on one heating circuit.
Maintenance
Interval in burner hours run Interval adjustable in steps of 100 h. until next maintenance
Interval until next maintenance
Interval adjustable to 3, 6, 12, 18 or 24 months.
The system carries out a restart.
Automatic flue gas sensor check
The display shows: “Testing, flue gas temperature sensor” and “Enabled, please
wait …”. If the flue gas temperature sensor is not positioned correctly, fault
message F.416 appears on the display. For further details regarding the flue
gas temperature sensor test, see “Repairs”. If fault message F.416 appears,
reposition the flue gas temperature sensor in the flue gas connection. Check
for leaks on the flue gas side.
Note The burner remains locked out until the test has been passed.
When the fault has been remedied, turn the ON/OFF switch off and back on
again. Confirm the message with OK.
Switching WiFi ON/OFF
The appliance is equipped with an integrated WiFi communication module with
extended type plate. The internal communication module supports commissioning,
maintenance and servicing with “ViGuide” online/the “ViGuide” app as well as
operation via the “ViCare” app. The access details required for establishing a
connection are recorded in the form of an access code with “WiFi symbol”.
Three copies of this code are located on the front of the programming unit.
Remove the access code label and for commissioning, affix one label to the
space marked out on the type plate. Switch on the WiFi connection and
establish a connection to the router. See also page 27. Activating the
internet connection:
Operating instructions
36
5593275
Commissioning the system (cont.)
Commissioning, inspection, maintenance
Affix a further label here so you can find it again for use at a later time:
Fig. 28 Affix a label in the operating instructions. Calling up the
commissioning assistant at a later point If you need to continue commissioning
later, the commissioning assistant can be reactivated at any time.
Tap the following buttons:
1. and OK simultaneously for approx. 4 s, then release.
2. Use / to select “Basic settings”.
3. OK
4. Use / to select “Commissioning assistant”.
5. OK
Entering contact details
The system operator can call up contact details when required and notify the
heating contractor.
1. and OK simultaneously for approx. 4 s, then release.
2. Use / to select “Connect with software tool”.
3. Follow the instructions on the programming unit display.
Filling the heating system
Fill water
As a heat transfer medium for DHW heating, the heating water must meet fluid category 3. This requirement is met if water of potable quality is used as heating water. For example, if additives are used, the additive manufacturer must specify which category the treated heating water comes under.
!
Please note Unsuitable fill water increases the level of
deposits and corrosion and may lead to appli-
ance damage.
Flush the heating system thoroughly before
filling.
Only use fill water of potable water quality.
Special antifreeze suitable for heating systems
can be added to the fill water. The antifreeze
manufacturer must verify its suitability.
Fill and top-up water with a water hardness
above 300 ppm must be softened, e.g. with a
small softening system for heating water.
5593275
37
Commissioning, inspection, maintenance Filling the heating system (cont.)
B A B D E
C
Fig. 29 Shown with the connections at the top
1. Check the pre-charge pressure of the expansion vessel.
2. Close the gas shut-off valve.
3. Connect the fill hose to boiler drain & fill valve A in the heating flow.
Either on the side or top of the boiler depending on the connection set.
4. Open shut-off valves B on the heating water side.
5. Fit hose to air vent valve C. Route the hose into a suitable container or
drain outlet.
6. Activate the filling function (see commissioning assistant or following
chapter).
7. Fill the heating system via boiler drain & fill valve A. Minimum system
pressure > 1.0 bar (0.1 MPa). Check the system pressure at pressure gauge D.
Indicator must be in the green band.
Note Close air vent valve C and adjust system pressure at boiler drain & fill
valve A.
8. Close boiler drain & fill valve A.
Activating the filling function
If the filling function is to be activated after commissioning.
Tap the following buttons:
1. and OK press simultaneously for approx. 4 s, then release.
2. Use / to select “Basic settings”.
3. OK
4. Use / to select “Commissioning assistant”.
5. OK
6. / for “Next” and OK until “Filling” appears.
7. OK The filling function is activated. The display shows the system
pressure. The filling function ends automatically after 20 min or when you tap
OK.
38
5593275
Venting the boiler
Commissioning, inspection, maintenance
!
Please note To prevent appliance damage,
Do not vent the boiler via the safety valve on the
heating water side.
1. Close shut-off valves B on the heating water side.
2. Open air vent valve C and fill valve A in the heating flow. Vent (flush) under mains pressure until no more air noise is audible.
3. Close air vent valve C and fill valve A. At the same time, adjust
operating pressure > 1.0 bar (0.1 MPa).
Note Call up the pressure indicator in the “System overview” menu point. See
operating instructions.
4. Open shut-off valves B on the heating water side.
5. Remove drain hose from air vent valve C and keep safe.
Venting the heating system
A
Fig. 30
1. Check whether the air vent screw in quick-action air vent valve A of the
heating circuit pump is open.
2. Close the gas shut-off valve. Switch the appliance on.
3. Activate venting function (see following steps).
4. Call up the pressure display with “System overview”. Check the system
pressure.
Activating the venting function
If the venting function is to be activated after commissioning.
Tap the following buttons:
1. and OK press simultaneously for approx. 4 s, then release.
2. Use 3. OK 4. Use 5. OK
/ to select “Basic settings”. / to select “Commissioning assistant”.
39
5593275
Commissioning, inspection, maintenance Venting the heating system (cont.)
6. / for “Next” and OK until “Venting” appears.
7. OK The venting function is activated. The display shows the system pressure. The venting function ends automatically after 20 min or when you tap OK.
Filling the DHW cylinder on the DHW side
1. The lever on the valve must be in position A.
2. Open the on-site DHW supply and a DHW draw-off point.
3. Once air stops coming out of the DHW draw-off point, the DHW cylinder is
completely filled.
4. If there is still air in the cylinder loading circuit, it can be released
via air vent screw D on the cylinder loading pump.
Fig. 31
A
C
B
D
Fig. 32
Checking the connections on the heating water and DHW sides
Danger There is a risk of electric shock from escaping
!
heating water or DHW.
When commissioning and after carrying out
maintenance work, check all water side connec-
tions for leaks.
Please note Leaking hydraulic connections lead to appliance damage. Check the
internal and on-site hydraulic con-
nections for leaks. In the event of leaks, switch off the appliance
immediately. Drain the heating water. Check the seating of seal rings. Always
replace displaced seal rings.
Naming the heating circuits
In the delivered condition, the heating circuits are designated “Heating circuit 1”, “Heating circuit 2”, “Heating circuit 3” and “Heating circuit 4”. If the system user prefers, the heating circuits can be renamed to suit the specific system.
To enter names for heating circuits: Operating instructions
5593275
40
Checking the gas type
Commissioning, inspection, maintenance
The boiler is equipped with an electronic combustion controller that adjusts
the burner for optimum combustion in accordance with the prevailing gas
quality. For operation with natural gas, no adjustment is
therefore required across the entire Wobbe index range. The boiler can be
operated within the Wobbe index range 9.5 to 15.2 kWh/m3 (34.2 to 54.7 MJ/m3).
For operation with LPG, the gas type needs to be changed on the control unit
(see following chapter).
1. Determine the gas type and Wobbe index by asking your local gas supply
utility or LPG supplier.
2. Record the gas type in the service report.
Converting the gas type (only for operation with LPG)
1. To change the gas type on the control unit, see “Commissioning the system
with the commissioning assistant”
Note No mechanical adjustments are made to the gas solenoid valve.
2. Affix label “G31” (supplied with the technical documentation) adjacent to
the type plate on the out-
side of the appliance.
5593275
41
Commissioning, inspection, maintenance Checking the static pressure and supply
pressure
C
B
A
Fig. 33
A Cover panel B Test connector C Type plate
Danger CO formation as a result of incorrect burner adjustment can have
serious health implications. Carry out a CO test before and after work on gas
appliances.
Operation with LPG Purge the LPG tank twice on commissioning/replacement. Vent
the tank and gas connection line thoroughly after purging.
01. Close the gas shut-off valve.
02. Undo clips and remove cover panel A.
03. Undo screw in test connector B on the gas train, but do not remove it.
Connect the pressure gauge.
04. Open the gas shut-off valve.
07. Check the supply (flow) pressure. For set values, see the following
table.
Note Use a suitable measuring device with a resolution of at least 0.1 mbar
(0.01 kPa) to check the supply pressure.
08. Record the actual value in the report. Implement measures as indicated in
the table below.
09. Shut down the boiler. Close the gas shut-off valve.
10. Remove the pressure gauge. Tighten the screw in test connector B.
11. Open the gas shut-off valve and start the appliance.
05. Test the static pressure and record it in the report. Max. 57.5 mbar
(5.75 kPa).
06. Start the boiler.
Danger Gas escaping from the test connector leads
to a risk of explosion. Check gas tightness at test connector B.
Note During commissioning, the appliance can enter a fault state if there are airlocks in the gas line. Reset the appliance after approx. 5 s (see operating instructions).
12. Fit cover panel A.
42
5593275
Commissioning, inspection, maintenance Checking the static pressure and supply pressure (cont.)
Supply pressure (flow pressure)
For natural gas
For LPG
< 13 mbar (1.3 kPa)
< 25 mbar (2.5 kPa)
13 to 25 mbar (1.3 to 2.5 kPa)
25 mbar (2.5 kPa)
25 to 57.5 mbar (2.5 to 5.75 kPa)
57.5 mbar (5.75 kPa)
Measures
Do not start the boiler. Notify the gas supply utility or LPG supplier. Start
the boiler.
Install a separate gas pressure governor upstream of the system. Set the pre-
charge pressure to 20 mbar (2.0 kPa) for natural gas and 50 mbar (5.0 kPa) for
LPG. Notify the gas supply utility or LPG supplier.
Function sequence and possible faults
Control unit issues a heat demand
Display No
Measure
Increase set value. Ensure heat transfer.
Yes
Fan starts
No Fault F.59, F.457
Ignition
Yes No Fault F.359
Yes Gas train opens
Yes Ionisation current builds
No Fault F.357 No Fault F.369, F.380
Yes Burner in operation
No Shuts down below the set boiler water temperature and restarts immediately.
Check connection cables on fan. Check power supply on fan.
Check ignition module (control voltage 230 V across plugs “X18.1” and “X18.3”
on the burner control units). Check the gas supply.
Check the gas supply pressure.
Check distance of ionisation electrode on burner gauze assembly. Purge the gas
line.
Check the flue system for tightness (flue gas recirculation). Check gas flow
pressure.
5593275
43
Commissioning, inspection, maintenance Function sequence and possible faults (cont.)
Yes
Automatic calibration of the combustion controller
Fault F.62, F.373 No
Fault F.346, F.377
Ensure adequate heat transfer. Reset device.
Check gap between ionisation electrode and burner gauze assembly. Check flue
system. Remove flue gas recirculation if required. Reset device.
Operating instructions
For further details regarding faults, see page “Troubleshooting”.
Setting the max. heating output
A limit can be set on the maximum heating output for heating mode. The limit
is set via the modulation range.
Note The flow rate must be checked before the max. heating output can be
adjusted. Ensure adequate heat transfer.
Tap the following buttons:
1. and OK press simultaneously for approx. 4 s, then release.
2. Use / to select “System configuration”.
3. OK
4. Use / to select “Boiler”.
5. OK
6. Use / to select parameter 596.0 “Maximum heating output”.
7. OK
8. Use / to set the required value in % of rated heating output. Delivered
condition 100 %.
9. OK
Activating screed drying
Screed drying
6 different temperature profiles can be set for screed drying: Preset
temperature profiles can be adjusted via parameter 897.0 “Screed drying” in
the General group. For further details, see “Function description”.
Note Screed drying applies to all connected heating circuits simultaneously. With a combi boiler, DHW heating is not possible during screed drying. With a system boiler or storage combi boiler, after 30 minutes DHW heating is suspended for an hour (parameter 1087.1) in order to run the screed drying program.
5593275
44
Commissioning, inspection, maintenance Adjusting the pump rate of the integral circulation pump
The pump speed and consequently the pump rate are regulated subject to the
outside temperature and the switching times for heating mode or reduced mode.
The minimum and maximum speeds for heating mode can be matched to the existing
heating system at the control unit.
100
Max
Speed in %
Min
+30
+20
-20
-30
Outside temperature in °C
Fig. 34
Setting (%) in the heating circuit 1 group: Min. speed: Parameter 1102.0 Max. speed: Parameter 1102.1
In the delivered condition, the minimum pump rate and the maximum pump rate are set to the following values: Note The minimum speed of 60 % is not undershot, in order to ensure the required flow rate via the internal overflow valve. Having the minimum pump rate set to 40 % ensures that the pump works more energy efficiently in weather-compensated mode.
Rated heating output Speed settings in the
in kW
delivered condition in %
Min. pump Max. pump
rate
rate
11
40
60
19
40
70
25
40
85
32
40
100
In conjunction with a low loss header, heating water
buffer cylinder and heating circuits with mixer, the
internal circulation pump runs at a constant speed.
Speed setting (%): Parameter 1100.2 in the Boiler
group
5593275
45
Commissioning, inspection, maintenance Adjusting the pump rate of the integral… (cont.)
Residual head of integral circulation pump
700 70 650 65 E
600 60 D
550 55
500 50 450 45 C
400 40 350 35 B 300 30 250 25 A
200 20 150 15
F 100 10 50 5
0 0 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 Flow rate
in l/h
Fig. 35
F Upper operational limit (integral bypass opens)
Curve A B C D E
Pump rate of circulation pump
60 % 70 % 80 % 90 % 100 %
Residual head mbar kPa
5593275
46
Commissioning, inspection, maintenance Checking the balanced flue system for
leaks (annular gap check)
A
Fig. 36 A Combustion air aperture (ventilation air)
For balanced flue systems tested together with the heat generator, there is no requirement for a tightness test (overpressure test) during commissioning by the flue gas inspector. In this case, we recommend that a simple tightness test is carried out during system commissioning. For this, check the CO2 or O2 concentration in the combustion air at the annular gap of the balanced flue pipe. If the CO2 concentration is less than 0.2 % or the O2 concentration is greater than 20.6 %, the flue pipe is deemed to be sufficiently gas-tight.
If actual CO2 values are greater or O2 values are lower, then pressure test the flue pipe with a static pressure of 200 Pa.
!
Please note If the test port is not sealed, combustion air is
drawn in from the room.
After the tightness test, re-seal the test port with
the plug.
5593275
47
Commissioning, inspection, maintenance Removing the burner
4x G
D
E
C
B
F
A
Fig. 37
1. Turn off the ON/OFF switch.
2. Close the gas shut-off valve and safeguard against reopening.
3. Release the clips and remove the cover panel.
4. Disconnect cables and leads from: Fan motor A Adaptor, CAN bus fan
Ionisation electrode B Ignition unit C Earth D
5. Undo gas supply pipe fitting E. 6. Detach Venturi extension F from fan
unit. 7. Undo 4 screws G and remove the burner.
Note Cover gas connection E so that no small parts can fall into it.
5593275
48
Commissioning, inspection, maintenance Checking the burner gasket and burner gauze assembly
D E
F G
C
A
B
CH
Fig. 38
Check burner gauze assembly D, electrodes B, thermal insulation ring F and
gasket G for damage. Only
remove and replace components if they are damaged
or worn.
6. Insert thermal insulation ring F and burner gauze assembly D with gasket E. Observe correct installation position. Align the tab as per the diagram.
Note If replacing the burner gauze assembly, also replace the gauze assembly
gasket and the fixing screw.
1. Disconnect plug with ignition electrode leads from ignition unit A.
2. Remove electrodes B.
3. Undo Torx screw C. Hold onto burner gauze assembly D when undoing the
screw.
4. Remove burner gauze assembly D with gasket E and thermal insulation ring
F. Check components for damage.
5. Install new burner gasket G. Observe correct installation position. Align
the tab as per the diagram.
7. Align the hole in burner gauze assembly D with burner door pin H.
!
Please note Incorrect positioning of the burner gauze
assembly on the burner door will cause
damage to the burner door.
Insert the burner door pin into the hole in the
burner gauze assembly.
Secure burner gauze assembly D and gasket E with Torx screw C. Tighten screws as tightly as necessary and ensure that the components are undamaged and are functioning correctly throughout service life. Observe torque settings if a torque wrench is available. Torque: 3.0 Nm.
8. Check thermal insulation ring F for firm seating.
49
5593275
Commissioning, inspection, maintenance
Checking the burner gasket and burner gauze… (cont.)
9. Fit electrodes B. Check clearances, see following chapter. Tighten screws
as tightly as necessary and ensure that the components are undamaged and are
functioning correctly throughout service life. Observe torque settings if a
torque wrench is available. Torque: 4.5 Nm.
Checking and adjusting the ignition and ionisation electrodes
6.5
+1 0
A
5+30 A
10 ±0.5 B
4+00.5
Fig. 39
A Ignition electrodes B Ionisation electrode
1. Check the electrodes for wear and contamination.
2. Clean the electrodes with a small brush (not a wire brush) or sandpaper.
3. Check the electrode gaps. If the gaps are not as specified or the electrodes are damaged, replace the electrodes and gaskets and adjust them as required. Tighten screws as tightly as necessary and ensure that the components are undamaged and are functioning correctly throughout service life. Observe torque settings if a torque wrench is available. Tighten the electrode fixing screws to a torque of 4.5 Nm.
Checking the back draught safety devices
Only for multiple connections to a flue system or multi boiler systems with a
flue gas cascade.
5593275
50
Commissioning, inspection, maintenance Checking the back draught safety devices (cont.)
Back draught safety device in the mixing shaft of the burner
Back draught safety device in the flue gas connection
A
B
Fig. 41
A
Fig. 40 1. Undo 2 screws and remove fan A.
1. Remove the balanced flue system.
Note If the balanced flue system cannot be removed, clean and check the back
draught safety device via the inspection cover.
2. Check back draught safety device A for dirt, ease of movement and
function.
2. Remove back draught safety device B.
3. Refit the balanced flue system.
3. Check the damper and gasket for dirt and damage. Replace if necessary.
4. Refit back draught safety device B.
4. Pour a small amount of water through the inspection port to ensure the
back draught safety device
is working.
Note Observe correct installation position.
5. Refit fan A and secure with 2 screws. Tighten screws as tightly as necessary and ensure that the components are undamaged and are functioning correctly throughout service life. Observe torque settings if a torque wrench is available. Torque: 4.0 Nm
Cleaning the heating surfaces
!
! Please note
Scratches to the surfaces of the heat exchanger
Please note Prevent damage due to cleaning water.
that come into contact with hot gas can result in
Cover electronic components with suitable
corrosion damage. Brushing can cause deposits
watertight material.
to become lodged in the gaps between the coils.
Never use brushes to clean the heating surfaces.
Note Discolouration on the heat exchanger surface is a normal sign of use. It has no bearing on the function and
service life of the heat exchanger.
The use of chemical cleaning agents is not required.
51
5593275
Commissioning, inspection, maintenance Cleaning the heating surfaces (cont.)
A Fig. 42
1. Use a vacuum cleaner to remove combustion residues from heating surface A
of the heat exchanger.
2. Flush heating surface A with water.
3. Check condensate drain. Clean the trap: See the following chapter.
4. Check the thermal insulation mat (if installed) in the heat exchanger for
damage, replace if necessary.
Checking the condensate drain and cleaning the trap
!
Please note Prevent damage due to condensate.
Cover electronic components with suitable
watertight material.
2. 4. 3.
Fig. 43
1. Pivot the HMU heat management unit forwards.
2. Undo the hose retainer. Remove the supply hose.
!
Please note Do not undo using a sharp object. This can
damage the condensate hose.
The hose retainer is detachable.
52
3. Undo hose clip and pull off drain hose.
4. Release trap from retaining clip. Hold trap as straight as possible and
remove. Ensure that no condensate runs out.
5. Clean the trap.
5593275
Commissioning, inspection, maintenance Checking the condensate drain and cleaning the… (cont.)
6. Refit the trap.
7. Refit the hoses. Secure the drain hose with the hose clip and attach the
supply hose with the retainer.
8. Check that connections on the trap and the heat exchanger are seated
correctly.
9. Flush the heating surface again with min. 0.3 l of water. This will also fill the trap with water.
!
Please note If the trap is not filled with water, flue gas
can escape.
Only start the appliance when the trap has
been filled.
Note Route the drain hose without any bends and with a constant fall.
Danger Risk of electric shock from escaping condensate and risk of poisoning from escaping flue gas. Check the connections for leaks and check that the trap is seated correctly.
Installing the burner
4x G
D
E
C
B
F A
Fig. 44
1. If necessary, move the programming unit.
53
5593275
Commissioning, inspection, maintenance Installing the burner (cont.)
2. Insert the burner and tighten screws G diagonally. Tighten the screws as
much as necessary to ensure that the components are not damaged and function
correctly throughout their service life. Observe torque settings if a torque
wrench is available. Torque: 6.5 Nm
Note Before installation, check burner gasket for damage.
3. Attach Venturi extension F to fan unit.
4. Fit gas supply pipe E with a new gasket. Tighten the screws as much as
necessary to ensure that the components are not damaged and function correctly
throughout their service life. Observe torque settings if a torque wrench is
available. Torque: 30 Nm
5. Check the gas connections for leaks.
Danger Escaping gas leads to a risk of explosion. Check the fitting for gas
tightness.
6. Connect the cables/leads: Fan motor A Connect CAN bus fan to adaptor.
Ionisation electrode B Ignition unit C Earth D
7. Fit cover panel.
Checking the neutralising system (if installed)
Ctehsetecrking the anode connection and anode earth current with an anode
Check that the earth cable is connected to the protective magnesium anode.
Note We recommend checking the function of the protective magnesium anode
annually. This function test can be carried out without interrupting
operation, by measuring the earth current with an anode tester.
5593275
54
Commissioning, inspection, maintenance Checking the anode connection and anode earth… (cont.)
A
CB
Fig. 45 1. Remove cover A (two-part design up to 26 kW). 2. Remove earth cable B from tab C.
3. Connect tester (up to 5 mA) in series between tab C and earth cable B. If the current measures > 0.3 mA the protective magnesium anode is OK. If the current measures < 0.3 mA or if there is no current at all, inspect the protective magnesium anode visually (see page 57).
Draining the boiler on the DHW side
1. Shut off the DHW supply upstream of the appliance.
5593275
55
Commissioning, inspection, maintenance Draining the boiler on the DHW side (cont.)
2. Connect the hose to the drain valve and route it into a suitable container or drain outlet.
Note Ensure adequate ventilation in the DHW pipework.
3. Turn the drain valve from lever position A (opera-
tional) to lever position B or C as required.
Lever position B: The DHW circuit in the appli-
ance excluding the DHW cylinder is drained via
the cold water connection.
Lever position C: The DHW circuit in the appli-
ance and the DHW cylinder are drained via the
hot water connection.
A
C
The cold water connection remains filled.
B
Fig. 46
Cleaning the loading cylinder
Note According to EN 806, a visual inspection and (if necessary) cleaning must
be carried out no later than 2 years after commissioning, and as required
thereafter.
5593275
56
Cleaning the loading cylinder (cont.)
Commissioning, inspection, maintenance
1. 8x
2.
- Fig. 47
1. Drain the loading cylinder.
2. Remove flange cover A.
3. Disconnect the loading cylinder from the pipework to prevent contamination
from entering the pipe-
work.
4. Remove loose deposits with a pressure cleaner. Use a chemical cleaning agent to remove hard deposits that cannot be removed with a pressure cleaner.
!
Please note Do not damage the cylinder:
Only use plastic cleaning equipment to
clean the inside.
Never use cleaning agents containing
hydrochloric acid.
5. Thoroughly flush the loading cylinder after cleaning.
Checking and replacing the protective magnesium anode (if necessary)
Visual inspection of protective magnesium anode. If the anode has degraded to
between 10 and 15 mm Ø, we recommend replacing the magnesium protective anode.
57
5593275
Commissioning, inspection, maintenance Re-assembling and filling the loading cylinder
D C E
B A
Fig. 48
1. Reconnect the loading cylinder to the pipework.
2. Insert new gasket A underneath flange cover B.
3. Fit flange cover B and tighten 8 screws D with a maximum torque of 25 Nm.
4. Push earth cable C onto the tab. 5. Fit cover E (two-part design up to 26 kW). 6. Fill the loading cylinder with potable water.
5593275
58
Commissioning, inspection, maintenance Checking the diaphragm expansion vessel and system pressure
A
Fig. 49 A Diaphragm expansion vessel valve
Note The expansion vessel can lose some of its charge pressure over time. If
the boiler heats up, the pressure rises to 2 or 3 bar (0.2 or 0.3 MPa). The
safety valve may also respond and discharge the excess pressure. Therefore
check the expansion vessel pre-charge pressure annually.
Check whether the installed expansion vessel is adequate for the system water
volume. Carry out this test on a cold system.
1. Drain the system until “0” is shown on the pressure indicator.
2. If the pre-charge pressure of the expansion vessel is lower than the
static system pressure: Top up with nitrogen at the valve of the diaphragm
expansion vessel until the pre-charge pressure is 0.1 to 0.2 bar (10 to 20
kPa) higher than the static system pressure.
3. Top up with water until the charge pressure of the cooled system is at
least 1.0 bar (0.1 MPa), and is 0.1 to 0.2 bar (10 to 20 kPa) higher than the
precharge pressure of the expansion vessel. Permiss. operating pressure: 3 bar
(0.3 MPa)
Note The expansion vessel is supplied from the factory with a pre-charge
pressure of 0.7 bar (70 kPa). Do not allow the pre-charge pressure to fall
below this value (boiling noises). This also applies to single floor heating
systems or attic heating centres (no static pressure). Top up with water until
the charge pressure is 0.1 to 0.2 bar (10 to 20 kPa) above the pre-charge
pressure.
59
5593275
Commissioning, inspection, maintenance Clehde) cking the pre-charge pressure and the DHW expansion vessel (if instal-
1. Check the static pressure of the DHW line downstream of the pressure
reducer and adjust if
required. Set value: Max. 3.0 bar (0.3 MPa)
2. Close the on-site shut-off valve in the cold water line.
Relieve the water pressure.
3. Turn lever on valve to position B.
4. Check the pre-charge pressure of the DHW expansion vessel and adjust if
required. Set value: Static
pressure minus 0.2 bar (20 kPa).
A
C
5. Turn lever on valve back to position A. Open the on-site shut-off valve in the cold water line.
B
Fig. 50
Checking the safety valve function
Checking the electrical connections for firm seating
Checking gas equipment for leaks at operating pressure
Danger Escaping gas leads to a risk of explosion. Check gas equipment (including inside the appliance) for gas tightness.
Note Only use suitable and approved leak detection agents (EN 14291) and devices for the leak test. Leak detection agents with unsuitable constituents (e.g. nitrides, sulphides) can cause material damage. Remove residues of the leak detection agent after testing.
Checking the combustion quality
The electronic combustion controller automatically ensures optimum combustion quality. During commissioning/maintenance, only the combustion values need to be checked. For this, measure the CO content and the CO2 or O2 content.
Note To prevent operating faults and damage, operate the appliance with uncontaminated combustion air.
Permissible CO content The CO content must be < 1000 ppm for all gas types.
5593275
60
Commissioning, inspection, maintenance Checking the combustion quality (cont.)
Permissible CO2 or O2 content
Operation with natural gas
Rated heating output (kW)
CO2 content (%)
Upper heating output
11
7.3 to 10.5
19
7.3 to 10.5
25
7.3 to 10.5
32
7.3 to 10.5
Lower heating output 7.5 to 10.5 7.5 to 10.5 7.5 to 10.5 7.5 to 10.5
O2 content (%) Upper heating output 2.1 to 7.9 2.1 to 7.9 2.1 to 7.9 2.1 to 7.9
Lower heating output 2.1 to 7.6 2.1 to 7.6 2.1 to 7.6 2.1 to 7.6
Operation with LPG CO2 content: 8.4 to 11.8 %
O2 content: 3.1 to 8.1 %
If the actual CO2 or O2 values lie outside their respec-
A
tive ranges, proceed as follows:
Check the balanced flue system for leaks; see
page 47.
Check ionisation electrode and connecting cable.
Note During commissioning, the combustion controller carries out an automatic calibration. Only measure the emissions approx. 50 s after the burner has started.
Fig. 51
1. Connect a flue gas analyser at flue gas port A on the boiler flue connection.
6. Adjust the upper heating output. See the following chapter.
2. Open the gas shut-off valve. Start the boiler. Create a heat demand.
3. Adjust the lower heating output. See the following chapter.
7. Check the CO2 content. If the actual value deviates from the permissible
ranges by more than 1 %, implement steps listed above.
8. Enter the actual value into the report.
4. Check the CO2 content. If the actual value deviates from the permissible
ranges, implement steps listed above.
5. Enter the actual value into the report.
9. Re-seal test port A.
Danger Escaping flue gas can damage your health. Check test port A for leaks.
Setting the upper/lower heating output Note Ensure adequate heat transfer.
Tap the following buttons: 01. and OK simultaneously for approx. 4 s, then
release.
02. Use / to select “Actuator test”.
03. OK 04. Use / to select the “Heating” group. 05. OK 06. Use / to set the
max. value.
Primary circuit pump running at 100 %
61
5593275
Commissioning, inspection, maintenance Checking the combustion quality (cont.)
07. OK 08. 09. Use / to select the “Boiler” group. 10. OK 11. Use / to select
the “Burner modulation
target”. 12. OK
13. Set the lower heating output: Select “Minimum heating output”. Confirm
with “OK”. The burner now operates at the lower heating output.
14. Set the upper heating output: Select “Maximum heating output”. Confirm
with “OK”. The burner now operates at the upper heating output.
Checking the flue system for unrestricted flow and leaks
Checking the external LPG safety valve (if installed)
Matching the control unit to the heating system
The control unit must be matched to the system equipment level. Set the parameters according to the accessories fitted:
Accessory installation instructions
Adjusting heating curves
Tap the following buttons: 01. (press for 3 sec if the display shows a house)
02. Use / to select “Settings”. 03. OK 04. Use / to select “Heating curve”.
05. OK 06. Use / to select “Heating circuit …” for the
required heating circuit.
07. OK 08. Use / to select “Slope” or “Level”. 09. OK 10. Use / to adjust the
value according to the
system requirements.
11. OK to confirm
Calling up and resetting the maintenance display
Checking service messages 1. (press for 3 sec if the display shows a house) 2. Use / to select “Active messages”. 3. OK
4. Use / to select “Maintenance”.
5. OK Existing messages are displayed.
62
5593275
Commissioning, inspection, maintenance Calling up and resetting the maintenance display (cont.)
Service reset (after service has been carried out)
1. and OK simultaneously for approx. 4 s, then release.
2. Use / to select “Service messages reset”. 3. OK
Fitting the front panel
- Fig. 52
Instructing the system user
The system installer should hand the operating instructions to the system user and instruct the user in operating the system.
DHW hygiene
For optimum DHW hygiene, avoid DHW temperatures that are < 50 °C. For larger
systems and systems with low water exchange, the temperature should not drop
below < 60 °C.
Hygiene function
The DHW can be heated to a specified (higher) set DHW temperature for a period
of one hour.
To activate the function, see the operating instructions. Inform the system user what DHW temperatures should be set and the risks associated with having a raised outlet temperature at the draw-off points.
63
5593275
System configuration (parameters) Calling up parameters
Parameters are split into the following groups: “General” “Boiler” “DHW”
(domestic hot water) “Heating circuit 1/2/3/4” “Solar”
Heating systems with one heating circuit without mixer and one or 2 heating
circuits with mixer: Below, the heating circuit without mixer is designated
“Heating circuit 1” and the heating circuits with mixer as “Heating circuit
2”, “Heating circuit 3” or “Heating circuit 4”. If the heating circuits have
been renamed, the chosen designation appears.
Note The display and setting of some parameters is dependent on: Heat
generator Connected accessories and the functions associated
with them
Tap the following buttons: 1. and OK simultaneously for approx. 4 s, then
release. 2. Use / to select “System configuration”. 3. OK 4. Use / to select
the required group. 5. OK 6. Use / to select the parameter for adjust-
ment. See tables below. 7. OK 8. / for the required value. 9. OK
General
Note Parameter values in bold are factory settings.
508.0 “UTC time zone” Setting
2 24 to +24
Explanations
Setting of the UTC time zone in which the appliance is located.
The factory setting is UTC +1 h
Time difference adjustable from 12 h to +12 h in increments of 0.5 h
528.0 “Set flow temperature for external demand” Setting
70 20 to 82
Explanations
Set flow temperature for external demand Set flow temperature in the delivered
condition 70 °C Set flow temperature adjustable from 20 to 82 °C in 1 °C
increments
896.0 “Display correction for outside temperature” Setting
0 10 to +10
Explanations Correction of measured outside temperature No correction Correction adjustable from 10 to +10 K
Parameter
5593275
64
General (cont.)
System configuration (parameters)
897.0 “Screed drying” Setting Not active
Chart A Chart B Chart C Chart D Chart E Chart F
Explanations
0
Screed drying can be set in accordance with selecta-
ble temperature/time profiles. For individual profile
curves, see chapter “Function description”.
2
3
4
5
6
7
912.0 “Automatic summer/wintertime changeover”
Setting
No
0
Yes
1
Explanations Automatic changeover disabled Automatic changeover enabled
912.1 “Earliest day of changeover from winter to summertime”
Setting
Explanations
25
Changeover from 02:00 h to 03:00 h occurs on the
Sunday after or on this set date.
1 to 31
Day of changeover adjustable from 1st to 31st of the month
912.2 “Month of changeover from winter to summertime”
Setting
Explanations
3
Month of changeover: March
1 to 12
Month of changeover adjustable from January to December
912.3 “Earliest day of changeover from summer to wintertime”
Setting
Explanations
25
Changeover from 03:00 h to 02:00 h occurs on the
Sunday after or on this set date.
1 to 31
Day of changeover adjustable from 1st to 31st of the month
912.4 “Month of changeover from summer to wintertime”
Setting
Explanations
10
Month of changeover: October
1 to 12
Month of changeover adjustable from January to December
1098.4 “Gas volume correction factor” Setting
1.0000
0.7000 to 1.0000
Explanations Value is provided on the gas supplier’s bill. Used for gas
consumption data.
Gas volume correction factor adjustable from 0.7000 to 1.0000 in increments of
0.0001.
5593275
Parameter
65
System configuration (parameters) General (cont.)
1098.5 “Calorific value” Setting
10.0000
5.0000 to 40.0000
Explanations Value is provided on the gas supplier’s bill. Used for gas
consumption data.
Calorific value adjustable from 5.0000 to 40.0000 kWh/m3 in increments of
0.0001
1139.0 “Outside temperature limit for cancelling reduced set room temperature”
Setting
Explanations
Temperature limit for cancelling reduced set room temperature
5
Temperature limit in the delivered condition 5 °C
61 to +10 Temperature limit adjustable from 61 to +10 °C in 1 °C increments
1139.1 “Outside temperature limit for raising the reduced set room temperature to the standard set room temperature”
Setting
Explanations
Temperature limit for raising the reduced set room temperature (see function description)
14
Temperature limit in the delivered condition 14 °C
60 to +10 Temperature limit adjustable from 60 to +10 °C in 1 °C increments
1504.0 “Source for date and time” Setting
Local
0
1
Explanations
Selection of source for date and time The setting depends on the heat
generator and accessories.
Factory setting: The date and time are adopted from the control unit.
Internet protocol (see parameter “508.0”)
Boiler
Note Parameter values in bold are factory settings.
521.0 “Time interval in burner hours until the next service”
Setting
Explanations
Number of burner hours to run until next service
0
0 to 25500 Burner hours until next service adjustable from 0 to 25500
Parameter
5593275
66
Boiler (cont.)
System configuration (parameters)
522.3 “Interval until the next service” Setting
0 1 2 3 4 5
Explanations Interval until the next service No interval selected 3 months 6 months 12 months 18 months 24 months
596.0 “Maximum heating output” Setting
100 0 to 100
Explanations
A limit can be set on the maximum heating output for heating mode. Heating
output in the delivered condition 100 % Adjustable from 0 to 100 %
597.0 “Limit, max. heating output for DHW heating” Setting
100 0 to 100
Explanations
A limit can be set on the maximum heating output for DHW heating. Heating
output in the delivered condition 100 % Adjustable from 0 to 100 %
1100.2 “Set speed of the primary circuit pump in heating mode”
Setting
Explanations
Target speed of internal circulation pump In heating operation With external demand With demand in conjunction with a low loss header
…
Factory settings defined by settings specific to the ap-
pliance
The setting range depends on the appliance
1240.0 “Operating mode of primary circuit pump” Setting
Explanations
1 7
1411.0 “Clear maintenance messages” Setting
No
0
Yes
1
“Automatic” Switched on regardless of current temperature level Shutdown in
reduced mode (in conjunction with continuous operation or when no demand via
room thermostat)
Explanations Clear maintenance messages once maintenance has been performed.
Maintenance messages are active (if present). Clear maintenance messages once.
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Parameter
67
System configuration (parameters) Boiler (cont.)
1432.1 “Residual head control of primary circuit pump”
Setting
Explanations
Residual head limit value for reducing pump speed of the internal circulation pump, in mbar
0
Internal circulation pump is controlled in line with the
outside temperature
1 to 255
Internal circulation pump is operated with constant residual head. Recommended setting: 120 mbar 1 step 1 mbar
1432.2 “Operating mode of primary circuit pump” Setting
0
1 to 20
Explanations
Internal circulation pump is operated with constant differential pressure.
Internal circulation pump is operated with rising differential pressure.
Adjustable from 1 to 20 mbar
1503.0 “Minimum heating output” Setting
… 5 to 100
Explanations
A limit can be set on the minimum heating output for heating mode.
Delivered condition specified by settings specific to the appliance
Adjustable from 5 to 100 %
1606.0 “Minimum burner pause time” Setting
0 1
Explanations
The minimum burner pause time can be set subject to boiler load.
Fixed setting for minimum burner pause time
Delivered condition, integral method (see parameter 1606.4)
1606.4 “Integral threshold for burner switch-off” Setting
50 5 to 255
Explanations
Only effective if parameter 1606.0 has been set to 1. Factory setting 50 K x
min Adjustable from 5 to 255 K x min The higher the value, the later the
burner switches off.
DHW
Note Parameter values in bold are factory settings.
Parameter
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68
DHW (cont.)
System configuration (parameters)
497.0 ” Operating mode of DHW circulation pump” Setting
0 4
Explanations DHW circulation pump: Time program Selected cycle (see parameter 497.3)
497.1 “DHW circulation pump for hygiene function” Setting
OFF
0
ON
1
Explanations
Activation criterion for the DHW circulation pump when the function “Increased
DHW hygiene” is active
According to time program
Switched on if function “Increased DHW hygiene” is active
Danger High DHW temperatures may cause scalding. Where necessary implement on-
site meas-
ures. E.g. install automatic thermostatic mixing valves in the DHW pipe.
Inform the system operator. Admix cold water at the draw-off points.
497.2 “DHW circulation pump for DHW heating” Setting
OFF
0
ON
1
497.3 “Number of cycles DHW circulation pump” Setting
0 1 2 3 4 5
Explanations Activation criterion for DHW circulation pump According to time
program ON during DHW heating to set cylinder temperature
Explanations Within the time phase, the DHW circulation pump is switched on
cyclically for 5 min at a time. Number of switching cycles per hour: 1
switching cycle 2 switching cycles 3 switching cycles 4 switching cycles 5
switching cycles 6 switching cycles
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Parameter
69
System configuration (parameters) DHW (cont.)
503.0 “Scald protection” Setting
OFF
0
ON
1
Explanations The adjustable water temperature is limited to a maximum value.
Scald protection OFF
Danger Risk of injury due to increased DHW temperature. Inform the system user
of the risk from the higher outlet temperature at the taps.
Scald protection ON (maximum DHW temperature 60 °C)
Note Even with the scald protection switched on, higher outlet temperatures
may occur at the draw-off points in the following cases: With active hygiene
function While the appliance is being calibrated
Parameter
5593275
1087.0 “Max. duration, DHW heating” Setting
240 0 1 to 240
Explanations
After a set period of time has elapsed, DHW heating ends even though the set
DHW temperature has not yet been reached. Not adjustable on gas condensing
combi boilers
Factory setting 240 min
No time limit for DHW heating
Duration of DHW heating adjustable from 1 to 240 min in 1 min increments
1087.1 “Min. delay until next DHW heating” Setting
Explanations
Minimum delay before DHW heating starts again, even though there is a demand.
Note Function becomes effective when the set “Max. duration, DHW heating” (1087.0) is exceeded.
60 60 to 240
Cannot be adjusted on gas condensing combi boilers
Delivered condition, delay of 60 min
Delay adjustable from 60 to 240 min in 1 min increments
1101.2 “Set speed of the primary circuit pump for DHW heating”
Setting
Explanations
Target speed of the internal circulation pump when operated as a DHW pump
…
Factory settings defined by settings specific to the ap-
pliance
The setting range depends on the appliance.
70
System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating circuit 3, Heating circuit 4
Note Parameter values in bold are factory settings.
424.3 “Set flow temperature increased when switching from operation with reduced room temperature to
operation with standard/comfort room temperature, heating circuit 1”
Setting
Explanations
Set flow temperature increased when changing from operation at reduced room temperature to operation at standard room temperature or comfort room temperature. See also chapter “Function description”
0 K
0
Delivered condition increase 0 K
0 to 20
Temperature rise adjustable from 0 to 20 K
424.4 “Duration for set flow temperature increase, heating circuit 1”
Setting
Explanations
Duration for set flow temperature increase See also chapter “Function description”
60 min
60
Delivered condition 60 min
0 to 120 Temperature rise adjustable from 0 to 120 min
426.3 “Set flow temperature increased when switching from operation with reduced room temperature to
operation with standard/comfort room temperature, heating circuit 2”
Setting
Explanations
Set flow temperature increased when changing from operation at reduced room temperature to operation at standard room temperature or comfort room temperature. See also chapter “Function description”
0 K
0
Delivered condition increase 0 K
0 to 20
Temperature rise adjustable from 0 to 20 K
426.4 “Duration for set flow temperature increase, heating circuit 2”
Setting
Explanations
Duration for set flow temperature increase See also chapter “Function description”
60 min
60
Delivered condition 60 min
0 to 120 Temperature rise adjustable from 0 to 120 min
428.3 “Set flow temperature increased when switching from operation with reduced room temperature to operation with standard/comfort room temperature, heating circuit 3”
Setting
Explanations
Set flow temperature increased when changing from operation at reduced room temperature to operation at standard room temperature or comfort room temperature. See also chapter “Function description”
0 K
0
Delivered condition increase 0 K
0 to 20
Temperature rise adjustable from 0 to 20 K
5593275
Parameter
71
System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.)
Parameter
5593275
428.4 “Duration for set flow temperature increase, heating circuit 3”
Setting
Explanations
Duration for set flow temperature increase See also chapter “Function description”
60 min
60
Delivered condition 60 min
0 to 120 Temperature rise adjustable from 0 to 120 min
430.3 “Set flow temperature increased when switching from operation with reduced room temperature to
operation with standard/comfort room temperature, heating circuit 4”
Setting
Explanations
Set flow temperature increased when changing from operation at reduced room temperature to operation at standard room temperature or comfort room temperature. See also chapter “Function description”
0 K
0
Delivered condition increase 0 K
0 to 20
Temperature rise adjustable from 0 to 20 K
430.4 “Duration for set flow temperature increase, heating circuit 4”
Setting
Explanations
Duration for set flow temperature increase See also chapter “Function description”
60 min
60
Delivered condition 60 min
0 to 120 Temperature rise adjustable from 0 to 120 min
933.3 “Priority, DHW heating, heating circuit 1” Setting
Off
0
DHW
1
Explanations
Priority of DHW heating over the heating circuit No priority for DHW heating
(only if the DHW cylinder is installed downstream of the low loss header) With
DHW heating priority
933.6 “Operating mode of heating circuit 1” Setting
Weather-compensated without room tem- 4 perature hook-up Weather-compensated
with room tempera- 7 ture hook-up
Explanations
Only adjust for systems with one heating circuit. Heating mode:
Weather-compensated without room temperature influence
Weather-compensated with room temperature influence (see also parameter 933.7)
933.7 “Room influence factor, heating circuit 1” Setting
8 0 to 64
Explanations
The higher the value, the greater the influence of the room temperature on the
set flow temperature of the heating circuit (heating curve). Operation with
room temperature hook-up must be set for the heating circuit (parameter
933.6). Only change the value for systems with one heating circuit. For a
sample calculation, see chapter “Heating curve” in the “Function description”
Room influence factor
Room influence adjustable from 0 to 64
72
Heating circuit 1, Heating circuit 2, Heating… (cont.)
System configuration (parameters)
934.3 “Priority, DHW heating, heating circuit 2” Setting
OFF
0
DHW
1
934.5 “Differential temperature, heating circuit 2” Setting
8 K
8
0 to 20
934.6 “Operating mode of heating circuit 2” Setting
Weather-compensated without room tem- 4 perature hook-up
Weather-compensated with room tempera- 7 ture hook-up
934.7 “Room influence factor, heating circuit 2” Setting
8 0 to 64
935.3 “Priority, DHW heating, heating circuit 3” Setting
OFF
0
DHW
1
Explanations Priority of DHW heating over heating circuit pump and mixer No
priority for DHW heating (only if the DHW cylinder is installed downstream of
the low loss header) With DHW heating priority
Explanations The flow temperature of the heat generator is higher than the
flow temperature of the heating circuit with mixer by an adjustable
differential temperature. See also chapter “Function description”.
Differential temperature in delivered condition 8 K Differential temperature
adjustable from 0 to 20 K
Explanations Heating mode: Weather-compensated without room temperature
influence Weather-compensated with room temperature influence See also
parameter 934.7
Explanations The higher the value, the greater the influence of the room
temperature on the set flow temperature of the heating circuit (heating
curve). Operation with room temperature hook-up must be set for the heating
circuit (parameter 934.6). Change value for heating circuit with mixer only.
For a sample calculation, see chapter “Heating curve” in the “Function
description” Room influence factor Room influence adjustable from 0 to 64
Explanations Priority of DHW heating over heating circuit pump and mixer No
priority for DHW heating (only if the DHW cylinder is installed downstream of
the low loss header) With DHW heating priority
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Parameter
73
System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.)
935.5 “Differential temperature, heating circuit 3” Setting
8 K
8
0 to 20
935.6 “Operating mode of heating circuit 3” Setting
Weather-compensated without room tem- 4 perature hook-up
Weather-compensated with room tempera- 7 ture hook-up
935.7 “Room influence factor, heating circuit 3” Setting
8 0 to 64
936.3 “Priority, DHW heating, heating circuit 4” Setting
Off
0
DHW
1
936.5 “Differential temperature, heating circuit 4” Setting
8 K
8
0 to 20
Explanations The flow temperature of the heat generator is higher than the
flow temperature of the heating circuit with mixer by an adjustable
differential temperature. See also chapter “Function description”.
Differential temperature in delivered condition 8 K Differential temperature
adjustable from 0 to 20 K
Explanations Heating mode: Weather-compensated without room temperature
influence Weather-compensated with room temperature influence See also
parameter 935.7
Explanations The higher the value, the greater the influence of the room
temperature on the set flow temperature of the heating circuit (heating
curve). Operation with room temperature hook-up must be set for the heating
circuit (parameter 935.6). Change value for heating circuit with mixer only.
For a sample calculation, see chapter “Heating curve” in the “Function
description” Room influence factor Room influence adjustable from 0 to 64
Explanations Priority of DHW heating over heating circuit pump and mixer No
priority for DHW heating (only if the DHW cylinder is installed downstream of
the low loss header) With DHW heating priority
Explanations The flow temperature of the heat generator is higher than the
flow temperature of the heating circuit with mixer by an adjustable
differential temperature. See also chapter “Function description”.
Differential temperature in delivered condition 8 K Differential temperature
adjustable from 0 to 20 K
Parameter
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74
Heating circuit 1, Heating circuit 2, Heating… (cont.)
System configuration (parameters)
936.6 “Operating mode heating circuit 4” Setting
Weather-compensated without room tem- 4 perature hook-up Weather-compensated
with room tempera- 7 ture hook-up
Explanations
See also parameter 936.7 Heating mode:
Weather-compensated without room temperature influence
Weather-compensated with room temperature influence
936.7 “Room influence factor, heating circuit 4” Setting
8 0 to 64
Explanations
The higher the value, the greater the influence of the room temperature on the
set flow temperature of the heating circuit (heating curve). Operation with
room temperature hook-up must be set for the heating circuit (parameter
936.6). Change value for heating circuit with mixer only. For a sample
calculation, see chapter “Heating curve” in the “Function description”
Room influence factor
Room influence adjustable from 0 to 64
1102.0 “Min. speed of speed-controlled primary/heating circuit pump in standard mode, heating circuit 1”
Setting
Explanations
Minimum speed of the internal circulation pump in heating mode with standard room temperature
…
Delivered condition specified by settings specific to
the heat generator
Setting range depends on the appliance.
1102.1 “Max. speed of speed-controlled primary/heating circuit pump in standard mode, heating circuit 1”
Setting
Explanations
Maximum speed of the internal circulation pump in heating mode with standard room temperature
…
Delivered condition specified by settings specific to
the heat generator
Setting range depends on the appliance.
1192.0 “Minimum flow temperature limit, heating circuit 1”
Setting
Explanations
Minimum flow temperature limit for the heating circuit
20 °C
20
Min flow temperature 20 °C
1 to 90
Setting range limited by parameters, depending on appliance variant
1192.1 “Maximum flow temperature limit, heating circuit 1”
Setting
Explanations
Maximum flow temperature limit for the heating circuit
74 °C
74
Max. flow temperature 74 °C
10 to 100 Setting range limited by parameters, depending on appliance variant
5593275
Parameter
75
System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.)
1193.0 “Minimum flow temperature limit, heating circuit 2”
Setting
Explanations
Minimum flow temperature limit for the heating circuit
20 °C
20
Min flow temperature 20 °C
1 to 90
Setting range limited by parameters, depending on appliance variant
1193.1 “Maximum flow temperature limit, heating circuit 2”
Setting
Explanations
Maximum flow temperature limit for the heating circuit
74 °C
74
Max. flow temperature 74 °C
10 to 100 Setting range limited by parameters, depending on appliance variant
1194.0 “Minimum flow temperature limit, heating circuit 3”
Setting
Explanations
Minimum flow temperature limit for the heating circuit
20 °C
20
Min flow temperature 20 °C
1 to 90
Setting range limited by parameters, depending on appliance variant
1194.1 “Maximum flow temperature limit, heating circuit 3”
Setting
Explanations
Maximum flow temperature limit for the heating circuit
74 °C
74
Max. flow temperature 74 °C
10 to 100 Setting range limited by parameters, depending on appliance variant
1195.0 “Minimum flow temperature limit, heating circuit 4”
Setting
Explanations
Minimum flow temperature limit for the heating circuit
20 °C
20
Min flow temperature 20 °C
1 to 90
Setting range limited by parameters, depending on appliance variant
1195.1 “Maximum flow temperature limit, heating circuit 4”
Setting
Explanations
Maximum flow temperature limit for the heating circuit
74 °C
74
Max. flow temperature 74 °C
10 to 100 Setting range limited by parameters, depending on appliance variant
Parameter
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76
Heating circuit 1, Heating circuit 2, Heating… (cont.)
System configuration (parameters)
1395.1 “Heating limit: Economy function, outside temperature, heating circuit 1”
Setting
Explanations
Heating circuit pump logic function (summer economy control): Heating circuit pump switches off when outside temperature is 1 K above selected value. Heating circuit pump switches back on when outside temperature is 1 K below selected value.
25 °C
25
Heating limit at outside temperature 25 °C
10 to 35 Heating limit adjustable from 10 to 35 °C
1396.1 “Heating limit: Economy function, outside temperature, heating circuit 2”
Setting
Explanations
Heating circuit pump logic function (summer economy control): Heating circuit pump switches off when outside temperature is 1 K above selected value. Heating circuit pump switches back on when outside temperature is 1 K below selected value.
25 °C
25
Heating limit at outside temperature 25 °C
10 to 35 Heating limit adjustable from 10 to 35 °C
1397.1 “Heating limit: Economy function, outside temperature, heating circuit 3”
Setting
Explanations
Heating circuit pump logic function (summer economy control): Heating circuit pump switches off when outside temperature is 1 K above selected value. Heating circuit pump switches back on when outside temperature is 1 K below selected value.
25 °C
25
Heating limit at outside temperature 25 °C
10 to 35 Heating limit adjustable from 10 to 35 °C
1398.1 “Heating limit: Economy function, outside temperature, heating circuit 4”
Setting
Explanations
Heating circuit pump logic function (summer economy control): Heating circuit pump switches off when outside temperature is 1 K above selected value. Heating circuit pump switches back on when outside temperature is 1 K below selected value.
25 °C
25
Heating limit at outside temperature 25 °C
10 to 35 Heating limit adjustable from 10 to 35 °C
Energy saving functions (setting only via software tool)
1791.0 “3-way valve target position” Setting
1. Heating 2. Central position 3. DHW
Explanations
The 3-way valve assumes the set position when there is no demand from heating
operation or DHW heating.
5593275
Parameter
77
System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.)
2426.1 “Weather-compensated heating circuit pump logic for heating circuit 1” (only for weather-compen-
sated control units)
Setting
Explanations
Setting
If the outside temperature rises above the threshold
range -9 to value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the outside temperature falls below the threshold
value (set room temperature plus offset in K), the
heating circuit pump is switched on.
2426.3 “Room temperature-dependent heating circuit pump logic for heating circuit 1” (only for weather-
compensated control units with room temperature hook-up).
Setting
Explanations
Only activate this function for the heating circuit with mixer or if there is only one direct heating circuit in the system.
Setting
If the actual room temperature rises above the thresh-
range -2 to old value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the actual room temperature falls below the thresh-
old value (set room temperature plus offset in K), the
heating circuit pump is switched on.
2427.1 “Weather-compensated heating circuit pump logic for heating circuit 2” (only for weather-compensated control units).
Setting
Explanations
Setting
If the outside temperature rises above the threshold
range -9 to value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the outside temperature falls below the threshold
value (set room temperature plus offset in K), the
heating circuit pump is switched on.
2427.3 “Room temperature-dependent heating circuit pump logic for heating circuit 2” (only for weathercompensated control units with room temperature hook-up).
Setting
Explanations
Only activate this function for the heating circuit with mixer or if there is only one direct heating circuit in the system.
Setting
If the actual room temperature rises above the thresh-
range -2 to old value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the actual room temperature falls below the thresh-
old value (set room temperature plus offset in K), the
heating circuit pump is switched on.
2428.1 “Weather-compensated heating circuit pump logic for heating circuit 3” (only for weather-compen-
sated control units).
Setting
Explanations
Setting
If the outside temperature rises above the threshold
range -9 to value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the outside temperature falls below the threshold
value (set room temperature plus offset in K), the
heating circuit pump is switched on.
Parameter
5593275
78
Heating circuit 1, Heating circuit 2, Heating… (cont.)
System configuration (parameters)
2428.3 “Room temperature-dependent heating circuit pump logic for heating circuit 3” (only for weather-
compensated control units with room temperature hook-up).
Setting
Explanations
Only activate this function for the heating circuit with mixer or if there is only one direct heating circuit in the system.
Setting
If the actual room temperature rises above the thresh-
range -2 to old value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the actual room temperature falls below the thresh-
old value (set room temperature plus offset in K), the
heating circuit pump is switched on.
2429.1 “Weather-compensated heating circuit pump logic for heating circuit 4” (only for weather-compen-
sated control units).
Setting
Explanations
Setting
If the outside temperature rises above the threshold
range -9 to value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the outside temperature falls below the threshold
value (set room temperature plus offset in K), the
heating circuit pump is switched on.
2429.3 “Room temperature-dependent heating circuit pump logic for heating circuit 4” (only for weathercompensated control units with room temperature hook-up).
Setting
Explanations
Only activate this function for the heating circuit with mixer or if there is only one direct heating circuit in the system.
Setting
If the actual room temperature rises above the thresh-
range -2 to old value (set room temperature plus offset in K), the
+5 °C
heating circuit pump is switched off.
If the actual room temperature falls below the thresh-
old value (set room temperature plus offset in K), the
heating circuit pump is switched on.
Frost protection configuration (setting only via software tool)
2855.1 “Additional (passive) frost protection configuration, heating circuit 1”
Setting
Explanations
1
= 1 °C
Setting range: -9 °C to +3 °C If the outside temperature falls below the set outside temperature limit, the corresponding heating circuit pump switches on (applies only to weather-compensated operation).
2856.1 “Additional (passive) frost protection configuration, heating circuit 2”
Setting
Explanations
1
= 1 °C
Setting range: -9 °C to +3 °C If the outside temperature falls below the set outside temperature limit, the corresponding heating circuit pump switches on (applies only to weather-compensated operation).
5593275
Parameter
79
System configuration (parameters) Heating circuit 1, Heating circuit 2, Heating… (cont.)
2857.1 “Additional (passive) frost protection configuration, heating circuit 3”
Setting
Explanations
1
= 1 °C
Setting range: -9 °C to +3 °C If the outside temperature falls below the set outside temperature limit, the corresponding heating circuit pump switches on (applies only to weather-compensated operation).
2858.1 “Additional (passive) frost protection configuration, heating circuit 4”
Setting
Explanations
1
= 1 °C
Setting range: -9 °C to +3 °C If the outside temperature falls below the set outside temperature limit, the corresponding heating circuit pump switches on (applies only to weather-compensated operation).
Subscriber numbers of connected extensions
All extensions connected to the heat generator (except the SDIO/SM1A
electronics module) must have a subscriber number. The subscriber number is
set on rotary switch S1 at each extension.
Parameter
5593275
Fig. 53 80
Subscriber numbers of connected extensions (cont.)
System configuration (parameters)
Rotary switch S1 settings: EM-S1 extension (system with solar collectors): 0
EM-EA1 extension (max. 3 extensions in one sys-
tem) Consecutive no. (any sequence): 1 up to 3 EM-P1 extension If no heating
circuits with mixer are available in the
system: 1 If heating circuits with mixer (EM-M1 or EM-MX
extensions) are present in the system: Always set subscriber number for EM-P1
extension to the consecutive number after EM-M1 or EM-MX extensions. EM-M1 or
EM-MX extensions Heating circuit 2 with mixer: Rotary switch on extension
kit to 1 Heating circuit 3 with mixer: Rotary switch on extension kit to 2
Note EM-EA1 extensions may have the same subscriber number as the EM-P1, EM-M1 or EM-MX extensions. The following table shows an example of how a system may be equipped.
Function
System with solar collectors Heating circuit 2 with mixer Heating circuit 3
with mixer Heating circuit 4 with mixer Heating circuit 1 without mixer
(circulation pump downstream of low loss header) Function extensions (e.g.):
Fault message input Fault message output Operating mode changeover
Electronics module ADIO ADIO ADIO ADIO ADIO
Extension
EM-S1 EM-M1/EM-MX EM-M1/EM-MX EM-M1/EM-MX EM-P1
DIO
EM-EA1
DIO
EM-EA1
DIO
EM-EA1
Setting Rotary switch S1 0 1 2 3 4
1 2 3
5593275
Parameter
81
Diagnosis and service checks Service menu
Calling up the service menu
Tap the following buttons:
1. and OK simultaneously for approx. 4 s, then release.
2. Select the required menu section, e.g. “Connect with software tool”.
Note Not all menu areas will be available, depending on the system equipment
level.
Service menu overview
Note Tap ” ” to return to the “Service main menu”
Service Active messages Reset service messages Connect with software tool
Diagnostics
General Burner Heating circuit 1 Heating circuit 2 Heating circuit 3 Heating
circuit 4 DHW Solar WiFi
Actuator test System configuration Message history Basic settings
Factory settings Commissioning assistant
Recognised devices Exit trade fair mode
Diagnosis
5593275
Diagnosis
Checking operating data
Operating data can be checked in various areas. See “Diagnosis” in the service
menu overview. Operating data on heating circuits with mixer can only be
called up if such components are installed in the system.
82
Note If a called up sensor is faulty, “- – -” appears on the display.
Diagnosis (cont.)
Diagnosis and service checks
Calling up operating data
Tap the following buttons:
1. and OK press simultaneously for approx. 4 s, then release.
2. Use / to select “Diagnosis”.
3. OK 4. Use / to select the required group. 5. OK 6. Select the required information with / .
5593275
Diagnosis
Checking outputs (actuator test)
Note When the actuator test is started, all actuators are initially disabled and valves moved to their central position.
06. OK
07. Use / below.
to select the actuator. See the table
Tap the following buttons:
08. OK
01. and OK simultaneously for approx. 4 s, then release.
02. “Actuator test”
03. OK
09. / for the required value. 10. OK
Note The function is active for 30 min.
04. OK to confirm the message.
11. Use to end the Actuator test.
05. Use / to select the required group.
The following actuator functions can be controlled subject to the system and appliance equipment level:
Display
Explanation
Boiler group
Fan speed
Set value
Burner fan speed in rpm (rotations/minute)
Burner modulation, set value
Off Minimum
heating output Maximum heating output Maximum DHW output
Modulation level (in accordance with specific heat generator settings)
3-way valve target posi- Heating
tion
Middle
3-way diverter valve set to heating mode 3-way diverter valve in central position (filling/draining)
DHW
3-way diverter valve set to DHW heating
Heating group
Primary circuit pump speed
Set value
Internal circulation pump speed in %
3-way valve target posi- Heating
tion
Middle
3-way diverter valve set to heating mode 3-way diverter valve in central position (filling/draining)
DHW
3-way diverter valve set to DHW heating
Heating circuit 1 pump Set value speed
Speed, heating circuit pump, heating circuit 1 without mixer in %
Heating circuit 2 pump Set value speed
Speed, heating circuit pump, heating circuit 2 with mixer in %
83
Diagnosis and service checks Checking outputs (actuator test) (cont.)
Display
Heating circuit 3 pump Set value speed
Heating circuit 4 pump Set value speed
Mixer, heating circuit 2 Open
Stop
Close
Mixer, heating circuit 3 Open
Stop
Close
Mixer, heating circuit 4 Open
Stop
Close
DHW group (domestic hot water)
Primary circuit pump, set speed
Set value
3-way valve target posi- Heating
tion
Middle
DHW
Cylinder loading pump On
Off
DHW circulation pump On
Off
Transfer pump hygiene On
function
Off
Circulation pump for cyl- On
inder heating
Off
Solar group
Solar circuit pump, set Set value speed
Transfer pump hygiene On
function
Off
Solar circulation pump On
Off
Solar 3-way valve, tar- Open
get position
Close
Stop
Explanation Speed, heating circuit pump, heating circuit 3 with mixer in %
Speed, heating circuit pump, heating circuit 4 with mixer in % Output for
“Mixer open” enabled (mixer extension kit) Current position is maintained
Output for “Mixer close” enabled Output for “Mixer open” enabled (mixer
extension kit) Current position is maintained Output for “Mixer close” enabled
Output for “Mixer open” enabled (mixer extension kit) Current position is
maintained Output for “Mixer close” enabled
Internal circulation pump in % 3-way diverter valve set to heating mode 3-way
diverter valve in central position (filling/draining) 3-way diverter valve set
to DHW heating
Speed, solar circuit pump in %
Diagnosis
5593275
84
Fault display on the programming unit
Troubleshooting
If there is a fault, the display shows “Burner fault” or “Active messages”.
Note If a central fault message facility is connected, this is switched on.
If “Connection error” appears on the display: Check connecting cable and plug between HMU heat management unit and HMI programming unit.
Calling up fault messages
Tap the following buttons:
5. OK
1. ” ” (press for 3 sec if the display shows a house)
2. / for: “Details”, if burner faults are present. “Active messages”, if
further faults are present.
6. / for the required message For an explanation of the fault codes, see the
following table.
7. OK
3. OK
8. ” ” for “Error”
4. / for “Error” to display all fault messages.
9. / to call up further messages
Acknowledging the fault display 1. ” ” (press for 3 sec if the display shows a
house) 2. / for “Active message” 3. OK 4. / for “Error” to display all fault
messages. 5. OK 6. / for “Acknowledge” to acknowledge all
fault messages. Note Service messages are also acknowledged.
Note Any connected central fault message facility is switched off. If an acknowledged fault is not remedied, the fault message will be redisplayed the following day at 07:00 h, and the fault message facility restarts.
Calling up acknowledged fault messages Tap the following buttons: 1. ” ” 2. / for “Active messages”. 3. OK 4. / for “Error”
5. OK
Note When troubleshooting, always observe the subscriber number of the
component. Check the component displayed. Remedy fault if applicable. The
subscriber number of the component depends on the position of rotary switch S1
on the corresponding extension module. The rotary switch position was set
during installation. To identify the affected module, check the position of
rotary switch S1 on the module if required.
The following is displayed: Date and time of the occurrence of the fault Fault
code
5593275
Service
85
Troubleshooting Fault display on the programming unit (cont.)
Description of the fault
Subscriber number of the component on which the
fault has occurred:
PlusBus subscriber components
0
EM-S1 extension (ADIO electronics mod-
ule)
1 to 15 EM-M1, EM-MX and EM-P1 extensions
(ADIO electronics module)
17 to 31 EM-EA1 extension (DIO electronics mod-
ule)
32 to 47 Cylinder module, extensions (electronics
module M2IO)
48 to 63 Vitotrol 200-E
64
SDIO/SM1A electronics module
CAN BUS subscriber components
1 HMU heat management unit
50 BCU burner control unit
58 Communication module (TCU 200)
59 HMI programming unit
60 Fan unit
90 Gateway
Low power radio subscriber components
48 to 63 Vitotrol 300-E
Calling up fault messages from the fault memory (message history)
The 10 most recent faults (including those remedied) and service messages are
saved and can be called up. Faults are sorted by date.
Tap the following buttons:
1. and OK simultaneously