Please file in Service Binder
5673 650 - 04 02/2023
Operating Instructions
VITOCROSSAL 300
With Vitotronic 200 KW6B Controls
Vitocrossal 300 CU3A
Models 26, 35, 45, 57, 94, 125, 160, 199
Floor mounted, gas-fired condensing boiler with MatriX gas burner and Lambda Pro control
For operation with natural gas and liquid propane gas
Heating input 19 to 199 MBH
5.6 to 58 kW
Read and save these instructions
for future reference.
Product may not be exactly as shown
IMPORTANT
H
Do not store or use gasoline or other
ammable liquids in the vicinity of this
or any other appliance.
WHAT TO DO IF YOU SMELL GAS
g Do not try to light any appliances.
g Do not touch any electrical switches,
do not use any phone in your building.
g Immediately call your gas supplier
from a neighbor’s phone. Follow
the gas supplier’s instructions.
g If you cannot reach your gas supplier,
call the re department.
Installation and service must be
performed by a qualied installer,
service agency or the gas supplier.
If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
WARNING
Improper installation, adjustment, and/
or operation could cause carbon monoxide
poisoning resulting in injury or loss of life.
This product must be installed and serviced
by a professional service technician who is
experienced and qualified in hot water boiler
installation and gas combustion.
WARNING
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
Safety
Safety, Installation and Warranty Requirements
Please ensure that these instructions are read and understood before commencing installation. Failure to comply with
the instructions listed below and details printed in this manual can cause product/property damage, severe personal
injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information
found in manual subsections).
WARNING
Installers must follow local regulations with respect to
installation of carbon monoxide detectors. Follow the
Viessmann maintenance schedule of the boiler contained
in this manual.
Product documentation
Read all applicable documentation before commencing
installation. Store documentation near boiler in a
readily accessible location for reference in the future
by service personnel.
uFor a listing of applicable literature,
please see section entitled “Important
Regulatory and Safety Requirements”.
Warranty
Information contained in this and
related product documentation must
be read and followed. Failure to do
so renders the warranty null and void.
Licensed professional heating contractor
The installation, adjustment, service and maintenance
of this equipment must be performed by a licensed
professional heating contractor.
uPlease see section entitled
“Important Regulatory and Installation
Requirements”.
Contaminated air
Air contaminated by chemicals can cause by-products
in the combustion process, which are poisonous to
inhabitants and destructive to
Viessmann equipment.
uFor a listing of chemicals which
cannot be stored in or near the
boiler room, please see subsection
entitled “Mechanical room” in the
“Installation Instructions”.
Advice to owner
Once the installation work is complete, the heating
contractor must familiarize the system operator/
ultimate owner with all equipment, as well as safety
precautions/requirements, shutdown procedure, and
the need for professional service annually before the
heating season begins.
Carbon monoxide
Improper installation, adjustment, service and/or
maintenance can cause flue products to flow into
living space. Flue products contain poisonous carbon
monoxide gas.
uFor information pertaining to the
proper installation, adjustment, service
and maintenance of this equipment to
avoid formation of carbon monoxide,
please see subsection entitled
“Mechanical room” and “Venting
requirements” in the “Installation Instructions”.
Fresh air
This equipment requires fresh air for
safe operation and must be installed
ensuring provisions for adequate
combustion and ventilation air exist.
uFor information pertaining to the
fresh air requirements of this product,
please see subsection entitled
“Mechanical room” in the “Installation
Instructions”.
Equipment venting
Never operate boiler without an installed venting
system. An improper venting system can cause
carbon monoxide poisoning.
uFor information pertaining to
venting and chimney requirements,
please see section entitled “Venting
Connection”. All products of
combustion must be safely vented
to the outdoors.
Operating and Service Documentation
It is recommended that all product documentation such
as parts lists, operating and service instructions be handed
over to the system user for storage. Documentation is to
be stored near boiler in a readily accessible location for
reference by service personnel.
WARNING
This boiler requires fresh air for safe operation and must
be installed with provisions for adequate combustion
and ventilation air (in accordance with local codes and
regulations of authorities having jurisdiction).
Do not operate this boiler in areas with contaminated
combustion air. High levels of contaminants such as
dust, lint or chemicals can be found at construction
sites, home renovations, in garages, workshops, in dry
cleaning/laundry facilities, near swimming pools and in
manufacturing facilities.
Contaminated combustion air will damage the boiler
and may lead to substantial property damage, severe
personal injury and/or loss of life. Ensure boiler/burner
is inspected and serviced by a qualified heating
contractor at least once a year in accordance with the
Service Instructions of the boiler.
2
Table of Contents
3
Page
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
Safety
General Information
Controls
Operation
Safety, Installation and Warranty Requirements..............2
About these Instructions.............................................6
For your Safety ..........................................................6
Operation .............................................................6
Working on the equipment ......................................6
Maintenance and cleaning .......................................6
Flue gas smell .......................................................6
Dangerous conditions .............................................6
Technical information .............................................6
Carbon monoxide ................................................... 7
For safe operation ..................................................7
Frozen water pipe hazard ........................................8
Replacement components, spare and wear parts ........ 8
Installation area conditions ......................................8
Sources of combustion and ventilation air
contaminants ........................................................8
Commissioning ..........................................................9
Terminology ..............................................................9
Your System is Preset at the Factory ............................9
Central heating ......................................................9
Time and date .......................................................9
Power failure ......................................................... 9
DWH heating ........................................................9
Frost protection .....................................................9
Wintertime/summertime changeover .........................9
Energy Savings Tips .................................................10
Central heating .................................................... 10
DHW heating ......................................................10
Tips for More Comfort ..............................................11
DHW heating ......................................................11
Central heating .................................................... 11
Opening the Control Unit ........................................... 11
Overview of Controls ................................................ 12
Modular structure ................................................12
Programming unit (H01B) ......................................12
Programming Unit ....................................................13
“Help” menu .......................................................13
Symbols .............................................................13
Standard Menu ........................................................14
Setting the standard room temperature for the
primary heating circuit .......................................... 14
Setting the operation program for the
primary heating circuit .......................................... 14
Extended Menu ........................................................ 14
How to Use the Controls ........................................... 15
Zone Circuit Steps .................................................... 16
Operating Program ...................................................17
Operating programs for central heating, DHW, frost
protection ...........................................................17
Special operating programs ...................................17
With frost protection monitoring ............................17
Without frost protection monitoring........................17
Information on a prolonged shutdown.....................17
Time Program ..........................................................18
Example of time phases within the time program for
central heating ....................................................18
Setting a time program .........................................18
Setting a time program using central heating ...........18
Setting the time program efficiently .......................19
Deleting time phases ............................................19
Table of Contents
4
Page
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
Start-up/Shutdown
Central Heating
Zone Circuits
DHW Heating
Starting the Heating System ......................................20
Shutting Down the Heating System ............................20
With frost protection monitoring ............................20
For the primary heating circuit ...............................20
For all heating circuits ..........................................20
Pump exercise function ........................................20
Ending the heating program “Standby mode” ..........20
Without frost protection monitoring........................20
Information on an extended shutdown .................... 20
Room Temperature ...................................................21
Setting the standard room temperature for central
heating ............................................................... 21
Setting the reduced room temperature for central
heating .............................................................. 21
Setting the Operating Program for Central Heating ........21
Time Program ..........................................................21
Setting the time program for central heating ............21
Heating Curve ..........................................................22
Setting the heating curve ...................................... 22
End Central Heating .................................................. 22
For the primary heating circuit ...............................22
Comfort Function “Party Mode ...................................23
Selecting the comfort function “Party mode” ...........23
Setting “Party mode” for central heating ................. 23
Cancelling “Party mode” .......................................23
Energy Saving Function “Economy Mode” ...................23
Selecting the energy savings function “Economy mode” 23
Setting “Economy mode” for central heating ...........23
Cancelling “Economy mode” .................................23
Energy Saving Function “Holiday Program” .............24
Selecting the energy savings function “Holiday
program” ............................................................24
Setting “Holiday Program” for central heating .......... 24
Display in the extended menu ................................24
Cancelling or deleting the “Holiday program” ........... 24
Room Temperature ...................................................25
For all fixed setpoint zone circuits ..........................25
Heating Curve ..........................................................25
Setting the heating curve ...................................... 25
End central heating ................................................... 25
For the primary heating circuit ...............................25
Setting the DHW Temperature ...................................26
Factory setting 122ºF (50ºC) ................................26
Operating Program ...................................................26
Setting the operating program for DHW heating ....... 26
Time Program ..........................................................27
Setting the time program for DHW heating .............. 27
DHW heating outside of the time program ...............27
Setting the time program for the DHW recirculation
pump .................................................................27
Switching Off DHW Heating ......................................28
Table of Contents
5
Page
5673 650 - 04
Setting the Display Contrast ......................................29
Setting the Display Brightness....................................29
Entering Names for the Heating Circuits ......................29
Setting the Primary Heating Circuit for the
Standard Menu ........................................................30
Setting the Time and Date ......................................... 30
Language Selection ..................................................30
Setting the Temperature Unit ºF ºC .............................31
Restoring Factory Settings .........................................31
Scanning Information ................................................ 32
Calling up the solar yield in conjunction with solar
thermal systems ..................................................32
Resetting data .....................................................32
Scanning the Service Messages .................................33
Calling up an acknowledged service message ..........33
Scanning Fault Messages ..........................................34
Calling up an acknowledged fault message..............34
Emissions Test Mode ................................................35
Ending emissions test mode ..................................35
Rooms are too Cold ..................................................36
Rooms are too Hot ...................................................37
There is no Hot Water ...............................................37
The DHW is too Hot .................................................37
“
2
“
Flashes and “Fault” is Displayed .........................38
“ “
Flashes and “Service” is Displayed .......................38
“Controls Locked Out” is Displayed ............................38
“External Hook-up” is Displayed .................................38
“External Program” is Displayed .................................38
Inspection/Cleaning/Maintenance ................................39
Cleaning .............................................................39
Inspection and maintenance ..................................39
Boiler .................................................................39
DHW tank ...........................................................39
Safety valve (DHW tank) ......................................39
Potable water filter (if installed) .............................39
Overview of Extended Menu ...................................... 40
Calling up Options Under “Information” ....................... 41
Scanning options in the extended menu .................. 41
Terminology ............................................................42
Operating program ...............................................42
Operating status ..................................................42
Extension kit for heating circuit with mixing valve ....42
Mixing valve .......................................................42
Under floor heating system ...................................42
Standard heating mode .........................................42
Reduced heating mode .........................................42
Room temperature-dependent heating mode ............ 42
Weather-compensated heating mode ......................42
Heating curve ......................................................43
Heating circuit ..................................................... 44
Heating circuit pump ............................................44
Room temperature ...............................................44
Safety valve ........................................................ 44
Solar circuit pump ................................................44
Set temperature ...................................................44
DHW pump .........................................................44
Drinking water filter .............................................44
Weather-compensated heating mode ......................44
DHW recirculation pump .......................................44
Vitocrossal 300 CU3A 26 to 199 Operating
Additional Adjustments
Scanning
Emissions
Troubleshooting
Maintenance
Additional Information
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
6
Safety
About these Instructions
Take note of all symbols and notations intended to draw attention to potential hazards or important product
information. These include “WARNING”, “CAUTION”, and “IMPORTANT”. See below.
u
IMPORTANT
uWarnings draw your attention to the presence of
potential hazards or important product information.
u
Cautions draw your attention to the presence of
potential hazards or important product information.
u
Helpful hints for installation, operation or maintenance
which pertain to the product.
u
This symbol indicates that additional, pertinent
information is to be found.
u
This symbol indicates that other instructions must
be referenced.
WARNING
Indicates an imminently hazardous situation which,
if not avoided, could result in loss of life, serious injury
or substantial product/property damage.
CAUTION
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product/
property damage.
For your Safety
Operation
Before operating the boiler, make sure you fully
understand its method of operation. Your heating
contractor should always perform the initial start-up
and explain the system. Any warranty is null and void
if these instructions are not followed.
Working on the equipment
All personnel working on the equipment or the heating
system must have the proper qualifications and hold all
necessary licenses.
Ensure main power to equipment, heating system, and
all external controls has been deactivated. Close main
gas supply valve. Take precautions in all instances to
avoid accidental activation of power during service work.
Maintenance and cleaning
Regular inspection and service by a qualified heating
contractor is important to the performance of the
Viessmann Vitocrossal 300 CU3A.
Neglected maintenance impacts on warranty; regular
inspection ensures clean, environmentally friendly and
efficient operation. We recommend a maintenance
contract with a qualified heating contractor.
Flue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor.
Dangerous conditions
- Deactivate main power immediately.
- Close gas supply valve.
Technical information
Literature applicable to all aspects of the Vitocrossal
300 CU3A:
- Technical Data Manual
- Installation Instructions
- Service Instructions
- Operating Instructions and User’s Information Manual
Additional applicable literature:
- Accessory manuals
7
5673 650 - 04
Vitocrossal 300 CU3A 26 to 199 Operating
For your Safety (continued)
Safety
WARNING
As there are no user-serviceable parts on the boiler,
burner or control, the end-user must not perform
service activities or adjustments of any kind on system
components. Failure to heed this warning can cause
property damage, severe personal injury, or loss of life.
CAUTION
Should overheating occur or the gas supply fail to
shut off, do not disconnect the electrical supply to the
pump. Instead, shut off the gas supply at a location
external to the appliance.
WARNING
The operator/ultimate owner is required to have the
heating boiler, burners, and controls checked, as a
minimum once per year, by the original installer or
by a competent heating contractor familiar with the
equipment. Defects must be corrected immediately.
CAUTION
Do not use this boiler if any part has been under water.
Immediately call a qualified heating contractor to
inspect the boiler and to replace any part of the control
system and any gas control which has been under
water.
WARNING
Improper installation, adjustment, service, or
maintenance can cause flue products to flow into
living space. Flue products contain poisonous carbon
monoxide gas which can cause nausea or asphyxiation
resulting in severe personal injury or loss of life.
Carbon monoxide
The U.S. Consumer Product Safety Commission strongly
recommends the installation of carbon monoxide detectors
in buildings in which gas-burning equipment is installed.
Carbon monoxide (CO) is a colorless, odorless gas, which
may be produced during incomplete combustion of fuel and/
or when the flame does not receive an adequate supply of
combustion air.
Carbon monoxide can cause severe personal injury or loss of
life.
Therefore, carbon monoxide detectors that are in compliance
with a nationally recognized standard (e.g. ANSI/UL 2034,
CSA 6.19 latest edition) should be installed and maintained
in buildings that contain gas-burning equipment.
Note: Viessmann does not test any detectors and makes
no representation regarding any brand or type of
detector.
For safe operation
We recommend that you frequently:
- Check for debris which could obstruct the flow of
flue gases. The vent or chimney must not be blocked.
A blocked or partially blocked vent or chimney can
cause flue gases to leak into the structure.
Flue gases leaking into the house can cause injury
or loss of life. Blocked or partially blocked chimneys
must have the blockage removed by a qualified
heating contractor.
- Check pressure gage for correct system (water)
pressure. Check for water on the floor from the
discharge pipe of the pressure relief valve or any
other pipe, pipe joint, valve or air vent.
- Check for moisture, water, or appearance of rust
on the flue gas pipes, their joints as well as vent
dampers, or side wall vent terminals (if so equipped).
- Ensure that nothing is obstructing the flow of
combustion and ventilation air and no chemicals,
garbage, gasoline, combustible materials, flammable
vapors and liquids are stored (not even temporarily)
in the vicinity of the boiler.
- Do not allow unsupervised children near the boiler.
Service/inspection of the boiler and the system is
recommended once a year. Maintenance, service and
cleaning are specified in the Installation Instructions.
Before the heating season begins, it is recommended that
the boiler and burner be serviced by a qualified heating
contractor. Service contracts may be established through
gas suppliers or other licensed contractors in your area.
WARNING
This product burns gas to produce heat. The appliance
must be properly installed, operated and maintained
to avoid exposure to appreciable levels of carbon
monoxide and the installer is required to confirm that
at least one carbon monoxide alarm is installed in the
living space before the appliance is put into operation.
It is important for the carbon monoxide alarms to be
installed, maintained, and replaced following the alarm
manufacturer’s instructions and applicable local codes.
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
8
For your Safety (continued)
Safety
Frozen water pipe hazard
Your heating boiler is designed to provide a warm and
comfortable living environment. It is not designed to
ensure against freezing of water pipes.
The boiler is equipped with several safety devices that
are designed to shut down the boiler and to prevent it
from restarting in the event of various unsafe conditions.
If your boiler remains off for an extended period of time
during cold weather, water pipes may freeze and burst,
resulting in extensive water damage and conditions in
which mold could grow. Certain molds are known to
cause respiratory problems, as well as to pose other
serious health risks. In case of water damage, immediate
measures should be taken to dry out affected areas as
quickly as possible to prevent mold from developing.
If your home will be unattended for an extended period
of time during cold weather, you should...
Shut off the water supply to the building, drain the
water pipes and add an antifreeze for potable water
to drain traps and toilet tanks. Open faucets where
appropriate.
Or..
Have someone check the building frequently during
cold weather and call a qualified service agency if
required.
Or...
Install a reliable remote temperature sensor that will
notify somebody of freezing conditions within the
home.
WARNING
Failure to protect against frozen pipes could result in
burst water pipes, serious property damage and/or
personal injury. Boiler may shut down. Do not leave
your home unattended for long periods of time during
freezing weather conditions without turning off the
water supply and draining water pipes or otherwise
protecting against the risk of frozen pipes.
Replacement components, spare and wear parts
Components which are not tested with the heating
system may damage the heating system or affect its
functions. Installation or replacement may only be
performed by a qualified heating contractor.
IMPORTANT
Installation area conditions
Ensure ambient temperatures are higher than 32°F (0°C)
and lower than 104°F (40°C).
Prevent the air from becoming contaminated by
halogenated hydrocarbons (e.g. as contained in
paint solvents or cleaning fluids) and excessive dust
(e.g. through grinding or polishing work).
Combustion air for the heating process, and
ventilation of the boiler room must be free of
corrosive contaminants. To that end, any boiler
must be installed in an area that has no chemical
exposure.
The list below indicates the main, currently known
sources.
Avoid continuously high levels of humidity
(e.g. through frequent drying of laundry).
Never close existing ventilation openings.
Sources of combustion and ventilation air contaminants
Areas likely to contain contaminants:
New building construction
Swimming pools
Remodelling areas, hobby rooms
Garages with workshops
Furniture refinishing areas
Dry cleaning/laundry areas and establishments
Auto body shops
Refrigeration repair shops
Metal fabrication plants
Plastic manufacturing plants
Photo processing plants
Beauty salons
Products containing contaminants:
Chlorine-type bleaches, detergents and cleaning
solvents found in household laundry rooms
Paint and varnish removers
Hydrochloric acid, muriatic acid
Chlorine-based swimming pool chemicals
Spray cans containing chlorofluorocarbons
Chlorinated waxes and cleaners
Cements and glues
Refrigerant leaks
Calcium chloride used for thawing
Sodium chloride used for water softening salt
Permanent wave solutions
Adhesives used to fasten building products and
other similar items
Antistatic fabric softeners used in clothes dryers
WARNING
Incorrect ambient conditions can lead to damage to
the heating system and put safe operation at risk.
9
5673 650 - 04
Vitocrossal 300 CU3A 26 to 199 Operating
General Information
Commissioning
DHW heating
Constant 24 h, the DHW tank is heated
to 122°F (50°C) “Set DHW temperature”.
Any installed DHW recirculation pump is on.
Set time program for night setback.
Frost protection
Your boiler and DHW tank are protected against
frost.
Wintertime/summertime changeover
This changeover is automatic.
The commissioning and matching of the control unit to
local conditions and building characteristics, as well as
instructing the user in the operation of the system, must
be carried out by your heating contractor.
Terminology
To provide you with a better understanding of the
functions of your Vitotronic control unit some terminology
is explained.
The terms are marked as follows:
Further information can be found in the “Terminology”
section.
Your System is Preset at the Factory
Your heating system is preset factory preset to ‘Heating
and DHW’ and is therefore ready for use.
Central heating
Constant 24 h, the rooms are heated
to 68°F (20°C) “Room temp setpoint” (standard
heating mode).
Reduced room temperature, the rooms are heated to
64°F (18°C) “Red. room temp setpoint” (reduced
room temperature, frost protection when used with
time program).
Your heating contractor can make further settings
for you during commissioning. You can change any
settings individually at any time to suit your
requirements (see “Central heating”).
Time and date
The day and time were set by your heating contractor
during commissioning.
Power failure
All settings are saved if there is a power failure.
If the heating system has been powered off for a
prolonged period, reset the date and time (refer to
page 30).
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
10
Energy Saving Tips
Central heating
Standard room temperature (“Room temp setpoint”,
refer to page 21):
Never overheat your home. Every degree of room
temperature reduction saves up to 6% on your
heating bills.
Never set your standard room temperature higher
than 68°F (20°C).
Time program (refer to page 18):
Heat your rooms to the standard room temperature
during the day and the reduced temperature at night.
Set the time program for this.
Operating program:
If you do not require central heating, select one of the
following operating programs:
– “Only DHW” (refer to page 25):
If you require no heating for your home in summer,
but you need hot water.
– “Standby mode” (refer to page 22):
If you don’t need to heat your home and don’t need
hot water for longer periods.
Short absence (refer to page 23):
Reduce the room temperature if you are going
shopping, for example. For this, select “Economy
mode”.
Holidays (refer to page 24):
If you are going away, select the “Holiday program”:
The room temperature will be reduced, and DHW
heating will be turned off.
Ventilation:
To ventilate, close the thermostatic valves and open
the windows fully for a short time.
Roller shutters:
Close roller shutters (where installed) at dusk.
Thermostatic valves:
Ensure that thermostatic valves are properly set.
Radiators:
Never cover radiators or thermostatic valves.
DHW heating
DHW recirculation pump (refer to page 26):
Only activate the DHW recirculation pump for periods
in which DHW is regularly drawn off. Set the time
program for this.
DHW consumption:
Consider showering instead of running a bath.
A shower generally uses less energy than a full bath.
For additional energy saving functions of the
Vitocrossal 300 CU3A, please contact your heating
contractor.
General Information
11
5673 650 - 04
Vitocrossal 300 CU3A 26 to 199 Operating
Tips for More Comfort
Central heating
Standard room temperature (“Room temp setpoint”,
refer to page 21):
You can select your desired temperature at any time
in the standard menu.
Primary heating circuit (refer to page 30):
If your heating system consists of several heating
circuits, you can make the most important adjustments
for a primary heating circuit directly via the standard
menu.
Time program (refer to page 18):
Make use of the time program. In the time program,
you can set time phases with different room
temperatures, for example different temperatures for
day and night time.
Heating curve (refer to page 22):
The heating curve enables you to individually adjust
the heating system to the actual heat demand in your
home. If set correctly, your desired temperature will
be achieved all year round.
“Party mode” (refer to page 23):
Select “Party mode” if you want to heat your home
to a temperature that is different from that dictated by
the time program.
Example: The time program determines that in the
evening, your home is heated to a reduced
room temperature, but you have visitors
staying into the evening.
General Information/Controls
Vitotronic 200, type KW6B
Legend
A Top part of control unit with programming unit
B Push button for changing the angle
DHW heating
Time program (refer to pages 18 and 27):
Use the time program for DHW heating.
Use the time program for the DHW recirculation pump.
During the selected time phases, DHW will be available
at the draw-off points at the required temperature.
Opening the Control Unit
Vitocrossal 300 CU3A 26 to 199 Operating
5673 650 - 04
12
Overview of Controls
Controls
Modular structure
The control unit is integrated into the boiler. The control
unit comprises a standard unit, electronics modules and
a programming unit.
Standard unit:
■ ON/OFF switch
■ Optolink laptop interface
■ Operating and fault indicators
■ Reset button
■ Fuses
Programming unit (HO1B):
■ Easy operation through:
– Plain text display with graphic ability
– Large font and black & white depiction for good
contrast
– Context-sensitive help text
■ With digital time switch
■ Control keys for:
– Navigation
– Confirmation
– Help and additional information
– Menu
■ Setting the:
– Standard room temperature
– Reduced room temperature
– DHW temperature
– Heating program
– Time programs for central heating, DHW heating
and DHW recirculation
– Economy mode
– Party mode
– Holiday program
– Heating curves
– Coding addresses
– Actuator tests
– Test mode
■ Displaying the:
– Boiler water temperature
– DHW temperature
– Operating details
– Diagnostic details
– Fault messages
Zone control interface
Heating circuit interface
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5673 650 - 04
Vitocrossal 300 CU3A 26 to 199 Operating
Operation
Programming Unit
You can change any settings on your heating system
centrally at the programming unit of the boiler control
unit.
If remote control units are installed in your rooms, you
can also adjust the settings at the remote control units.
Refer to the remote control
operating instructions
Legend
Takes you to the previous step in the menu or
cancels a setting that has been started
Cursor keys To scroll through the menu or to set
values
OK
Confirms your selection or saves the setting
?
Calls up help or additional information on the
selected menu.
Calls up the extended menu
Two control levels are available:
The standard menu: Refer to page 14.
The extended menu: Refer to page 14.
Note: The screen saver is activated if you have not made
any adjustments on the programming unit for a few
minutes (refer to page 15).
“Help” menu
Displays explanations about operation in the form of a
short guide.
Call up the short guide as follows:
If the screen saver is active (refer to page 15):
Press
?
.
From anywhere in the menu:
Keep pressing the key until the standard menu
is displayed (refer to page 14).
Press
?
.
Symbols
These symbols are not always displayed, but appear
subject to the system version and the operating state.
Indicators:
e
Frost protection enabled
s
Central heating to standard room temperature
m
Central heating with reduced room temperature
Party mode enabled
Economy mode enabled
In conjunction with a solar thermal system:
Solar circuit pump is running
Heating circuits:
Heating circuit ...
Operating programs:
For an explanation of the symbols (refer to page 17).
Messages:
2
Fault
Service
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14
Standard Menu
Legend
A Header (shows the operating program for displayed
heating circuit D)
B Current outside temperature
C Set room temperature
D Heating circuit which is selected for operation in the
standard menu (primary heating circuit)
The following settings for the primary heating circuit
D can be called up and adjusted in the standard
menu:
Standard room temperature
Operating program
Call up the standard menu as follows:
If the screen saver is active (refer to page 15):
Press OK.
If you are in the extended menu:
Keep pressing the button until the standard menu
appears.
Note:
Settings for the primary heating circuit can also
be adjusted in the extended menu
The settings for any other connected heating
circuits can only be adjusted in the extended
menu.
Your heating contractor can block the operation
of the standard menu. In such cases, you will
not be able to make adjustments in either the
standard menu or in the extended menu.
Setting the standard room temperature for the primary
heating circuit (displayed in the header D)
Press the following keys:
for the required value.
OK to confirm.
Setting the operating program for the primary
heating circuit (displayed in the header D)
Press the following keys:
for the required operating program.
OK to confirm.
Extended Menu
In the extended menu, all settings for the Vitotronic
control unit’s range of functions can be called up and
adjusted, including for example adjustments to the holiday
program and time programs.
The menu overview can be found on page 40.
Call up the extended menu as follows:
If the screen saver is active (refer to page 15):
Press OK and then .
From anywhere in the menu:
Press .
Note: Your heating contractor can block access to the
extended menu. In this case, you can only call up
service and fault messages.
Operation
Legend
A Header zone circuit which is selected for operation
in the standard menu.
B Heating
C Zone circuit pump output active
D Current outdoor temperature. Only for zone circuits
with weather compensated operation.
E In conjunction with solar thermal system:
Solar circuit pump running
F Set zone circuit temperature
G Burner in operation with modulation rate in %.
Legend
A Dialogue line
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How to Use the Controls
The screen saver will become active if you have not
adjusted any settings on the programming unit for a few
minutes. The display brightness is reduced.
1. Press
OK
. This takes you to the standard menu
(refer to page 14).
2. Press This takes you to the extended menu (refer
to page 14). The selected menu option is highlighted
in white. The dialogue line E (refer to diagram on
page 14) then shows the necessary instructions.
Adjustments to the central heating can be made for
every heating circuit. It is therefore necessary to select
the respective heating circuit prior to making any
adjustments (e.g. standard room temperature).
The following diagram shows how to make adjustments,
using the standard room temperature as an example.
The diagram shows the adjustment without and with
selection of the heating circuit, as well as different dialog
lines.
Legend
B Current outside temperature
C Standard room temperature
Operation
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Zone Circuit Steps
Operation
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Vitocrossal 300 CU3A 26 to 199 Operating
Operation
Operating Program
Symbol Operating program Function
Central heating and DHW heating
w
“Heating and DHW” H The rooms of the selected heating circuit are heated
in accordance with the room temperature and time
program specified (see section “Central heating”).
H DHW is heated in accordance with the DHW
temperature and time program specified (see section
“DHW heating”).
“Only DHW”
w
“Only DHW” H DHW is heated in accordance with the DHW
temperature and time program specified (see section
“DHW heating”).
H No central heating.
H Frost protection enabled.
Frost protection
9
“Standby mode” H No central heating.
H No DHW heating.
H Frost protection for the boiler and the DHW tank is active.
Operating programs for central heating, DHW, frost protection
Legend
F Special operating programs
Special operating programs
“External hook-up”
Your heat pump control unit is regulated by a higher
control unit.
“External program”
The operating program was changed by a
communications interface (e.g. Vitocom 100).
“Holiday program”
Refer to page 24.
Note: In the extended menu, you can call up the set
operating program under “Information”
(refer to page 40).
IMPORTANT
With frost protection monitoring
For every heating circuit select the “Standby mode”
operating program
H No central heating
H No DHW heating
H Frost protection for the boiler and the DHW tank
is active.
Single boiler system control: Refer to page 21
If outdoor temperatures of below 37°F (3°C) are expected,
take appropriate measures to protect the heating system
from frost.
If necessary, contact your heating contractor.
Information on a prolonged shutdown
H Circulation pumps may seize up as they are not being
supplied with power.
H It may be necessary to reset the date and time
(refer to page 30).
Without frost protection monitoring (shutdown)
When the boiler control and accessories are de-energized,
frost protection is not active for the boiler or the DHW
tank.
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Time Program
Operation
The following explains how to input the settings for a
time program. The special features of each individual
time program are assigned to the relevant chapters.
Setting a time program for the following functions:
H Central heating (refer to page 21)
H DHW heating (refer to page 26)
H DHW recirculation pump (refer to page 26)
H You can set the time program individually, to be the
same for every day of the week or different: You can
select up to 4 time phases per day for standard heating
mode. Set the start and end points for each time phase.
Between these time phases, the rooms are heated with
the reduced room temperature (see chapter “Setting the
room temperature for reduced heating mode”).
H When setting, bear in mind that your heating system
requires some time to heat the rooms to the required
temperature.
H You can set the time program individually, to be the
same, or different, for every day of the week.
H You can select up to 4 time phases per day.
H For each time phase you will need to select the start
and end points.
The selected time phase is illustrated by a white bar
on the time chart. The length of the bar reflects the
length of time.
H In the extended menu, you can call up the time
programs under “Information” (refer to page 40).
Setting a time program using central heating as an example
Extended menu:
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating time program”
5. Select part of the week or a day.
6. Select a time phase ! to $. The selected time
phase is illustrated by a white bar on the time chart.
7. Set the start and end points for the relevant time
phase. The length of the white bar in the time diagram
is adjusted accordingly.
8. Press to exit the menu.
Note: If you want to terminate a time phase setting
process prematurely, keep pressing until the
required display appears.
Example of time phases within the time program for
central heating
H Time program for the following part of the week:
“Monday–Friday” (“Mo-Fr”)
H Time phase !:
05:00 to 08:30 h
H Time phase ?:
16:30 to 23:00 h
In between these time phases the system heats to a
reduced temperature.
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Operation
Time Program (continued)
Setting the time program efficiently
If you would like to set a different time program for just
one day of the week, proceed as follows:
Example: You want to set a different time program for
Monday:
1. Select the period “Monday–Sunday” and set the
time program.
Note: The check mark is always set at the sections of
the week with identical time phases.
Factory setting: Same for all days of the week,
therefore “Monday-Sunday” is checked.
2. Then select “Monday” and adjust the time program
for that day.
Note: The “Saturday-Sunday” part of the week is
checked because the set time phases correspond
only to this part of the week.
Deleting time phases
H Set the time for the end point to the same time that
was set for the start point.
Or
H For the start point, select a time prior to 00:00 h.
The display shows the selected time phase as
“- - : - -”.
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Starting the Heating System
Start-up/Shutdown
Legend
A Fault indicator (red)
B On indicator (green)
C Reset button
D ON/OFF switch
Vitotronic 200, type KW6B
Ask your heating contractor about the following:
H Boiler type and relevant control unit type
H Required system pressure
H Location of the pressure gauge, shut-off valve, gas
shut-off valve, ventilation apertures
1. Check the heating system pressure at the pressure
gauge. If the pressure of the heating system is too low,
top up the water or notify your heating contractor.
2. In boilers for room air dependant operation:
Check that the ventilation apertures of the mechanical
room are open and unrestricted.
3. Open the gas shut-off valve(s).
4. Switch ON the power supply, e.g. at a separate
MCB/fuse or a mains isolator.
5. Switch ON the ON/OFF switch
After a short time, the standard menu is displayed
(refer to page 14) and the green ON indicator illuminates.
Your heating system and, if installed, your remote control
unit are now ready for use.
Shutting Down the Heating System
With frost protection monitoring
For every heating circuit, select heating program “Standby
mode”.
H No central heating.
H No DHW heating.
H Frost protection for the boiler and the DHW tank
is enabled.
For the primary heating circuit (displayed in the header)
Standard menu
1. for the operating program
OK
to confirm
For all heating circuits
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Operating program”
5. “Standby mode”
Pump exercise function
Circulation pumps are started for 10 sec. once every 24
hours to prevent the pumps from seizing up. This function
is active during all operating programs and during warm
weather shutdown.
Ending the heating program “Standby mode”
Select another heating program.
Without frost protection monitoring
1. Switch the ON/OFF switch OFF.
2. Close the shut-off valves.
3. Isolate the heating system from its main power
supply, e.g. at a separate MCB/fuse or a mains
isolator.
4. Where outside temperatures of below 37°F (3°C)
are anticipated, please take suitable measures to
protect the heating system against frost. If necessary,
contact your heating contractor.
Information on an extended shutdown
H Circulation pumps may seize up if they are not supplied
with power.
H After an extended shutdown, it may be necessary to
reset the date and time (refer to page 30).
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Room Temperature
Central Heating - Heating Circuit (HC)
Setting the Operating Program for Central Heating
Setting the reduced room temperature for central heating
(night setback)
Factory setting: 64°F (18°C)
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Reduced room temp setpoint”
5. Set the required value.
Central heating to this temperature:
H Between the time phases for standard heating mode.
H In the holiday program (refer to page 24).
For all heating circuits
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Operating program”
5. For example “Heating and DHW”
For information on the operating programs, refer to
page 17.
Further information can be found in “Terminology” page 42.
Setting the standard room temperature for central heating
Factory setting: 68°F (20°C)
For the primary heating circuit (refer to page 30)
Standard menu
1. for the required value.
2. OK to confirm.
For all heating circuits
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Room temp setpoint”
5. Set the required value.
Further information can be found in “Terminology” page 42.
Setting the time program for central heating
Factory setting: One time phase from 0:00 to 24:00 h
for every day of the week.
Extended menu:
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating time program”
5. Set the required time phases.
Procedure for setting a time program, refer to page 18.
Note: When setting, bear in mind that your heating
system requires some time to heat the rooms
to the required temperature.
Further information can be found in “Terminology” page 42.
Setting the operating program for central heating
For the primary heating circuit (refer to page 30)
Standard menu
1. for the operating program:
“Heating and DHW”
2. OK to confirm.
Time Program
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Central Heating - Heating Circuit (HC)
Heating Curve
Example: Changing the heating curve slope to 1.5
A graph clearly shows the change in the
heating curve as soon as you alter the value
for the slope or shift.
Depending on various outside temperatures (shown on
the horizontal axis), the assigned set supply temperatures
for the heating circuit are highlighted in white.
Your system’s heating characteristics are affected by the
slope and the shift of the selected heating curve. Further
information about the heating curve can be found under
“Terminology” on page 42.
Factory setting:
H Slope: 1.4
H Heating curve shift: 0
H Standard room temperature (set value): 68°F (20ºC)
H Reduced room temperature (set value): 64°F (18ºC)
Setting the heating curve
Factory setting:
H “Slope”: 1.4
H “Shift” of the heating curve: 0
Extended menu:
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating curve”
5. “Slope” or “Shift”
6. Set the required value.
Note: Tips on when and how to change the heating curve
slope and shift are displayed by pressing ?.
End Central Heating
For the primary heating circuit (refer to page 28)
Standard menu
1. for the operating program:
“Only DHW” (no central heating)
Or
“Standby mode” (frost protection active)
2. OK to confirm.
For all heating circuits
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating program”
5. “Only DHW” (no central heating)
Or
“Standby mode” (frost protection active)
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Central Heating - Heating Circuit (HC)
Comfort Function “Party Mode”
Energy Saving Function “Economy Mode”
Selecting the comfort function “Party mode”
With this function, you can change the room temperature
for several hours, e.g. if guests unexpectedly stay longer
in the evening. You do not have to change any existing
control settings. The DHW is reheated in this function to
the selected set temperature.
Setting “Party mode” for central heating
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Party mode”
5. Set the required room temperature for “Party mode”.
Note: The display of the set standard room
temperature does not change.
H The rooms are heated to the required temperature.
H Provided your heating contractor has not altered the
settings, DHW is heated to the selected set temperature
first, before central heating begins.
H The DHW recirculation pump is switched ON
(if installed).
Cancelling “Party mode”
H Automatically after 8 hours.
Note: If you want to make changes to this, contact
your local heating contractor.
Or
H Automatically when the system switches to standard
heating mode in accordance with the time program.
Or
H Set “Party mode” to “OFF”.
Display in the standard menu
Selecting the energy saving function “Economy mode”
To save energy, you can reduce the room temperature
in standard heating mode. For example, if you leave the
house for a few hours.
Setting “Economy mode” for central heating
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Economy mode”
Note: The display of the set room temperature does
not change.
Cancelling “Economy mode”
H Automatically when the system switches to reduced
heating mode in accordance with the time program.
Or
H Set “Economy mode” to “OFF”.
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Central Heating - Heating Circuit (HC)
Energy Saving Function “Holiday Program”
Display in the standard menu
Selecting the energy saving function “Holiday program”
To save energy, for example over long holidays, you can
activate the “Holiday program”.
Setting the “Holiday program” for central heating
Note: The holiday program affects all heating circuits.
If you want to make changes to this, contact your
local heating contractor.
The holiday program starts at 00:00 h on the day following
your departure and ends at 00:00 h on the day of your
return. This means the selected time program is active on
the days of departure and return (refer to page 24).
Extended menu:
1.
2. “Heating”
3. “Holiday program”
4. Set the required departure and return dates.
The holiday program has the following effect:
H Central heating:
– For heating circuits in the operating program
“Heating and DHW”:
The rooms are heated to the selected reduced
room temperature (refer to page 21).
– For heating circuits in the operating program “Only
DHW”:
No central heating. Frost protection for the boiler
and the DHW tank is active.
H DHW heating:
There is no DHW heating while ‘holiday program is
active. Frost protection for the DHW tank is active.
Display in the extended menu
In the extended menu, you can call up the set holiday
program under “Information” (refer to page 41).
Cancelling or deleting the “Holiday program”
Extended menu
1.
2. “Heating”
3. “Holiday program”
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Central Heating - Zone Circuits (ZC)
Room Temperature
Further information can be found in “Terminology” page 42.
Factory setting: 165°F (74°C)
For all fixed setpoint zone circuits
Extended menu
1.
2. “Zone Circuits”
3. Poss. for the required zone circuit.
4. “Zone temp setpoint”
5. Set the required value.
6. OK to confirm
Heating Curve
Example: Changing the heating curve slope to 1.5
A graph clearly shows the change in the
heating curve as soon as you alter the value
for the slope or shift.
Depending on various outside temperatures (shown on
the horizontal axis), the assigned set supply temperatures
for the heating circuit are highlighted in white.
Your system’s heating characteristics are affected by the
slope and the shift of the selected heating curve. Further
information about the heating curve can be found under
“Terminology” on page 42.
Setting the heating curve
Factory setting:
H “Slope”: 1.4
H “Shift” of the heating curve: 0
Extended menu:
1.
2. “Zone Circuit”
3. Poss. for the required heating circuit.
4. “Heating curve slope”
5. Set the required valve.
6. Heating curve shift.
7. Set the required value.
Note: Tips on when and how to change the heating curve
slope and shift are displayed by pressing ?.
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DHW Heating
Setting the DHW Temperature
Operating Program
Further information can be found in “Terminology” page 42.
Setting the operating program for DHW heating
For the primary heating circuit (refer to page 30)
Standard menu
1. for the operating program:
“Heating and DHW”
Or
“Only DHW”
2. OK to confirm.
For all heating circuits
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating program”
5. “Heating and DHW”
Or
“Only DHW” (summer mode no central heating)
For information on the operating programs (refer to
page 17).
Factory setting 122°F (50ºC)
Extended menu:
1.
2. “DHW”
3. “DHW temperature setpoint”
4. Using set the required value
5. Ok to confirm
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DHW Heating
Time Program
Further information can be found in “Terminology” page 42.
Setting the time program for DHW heating
Factory setting: One time phase from 00:00 to 24:00 h
for every day of the week.
Extended menu:
1.
2. “DHW”
3. “DHW time program”
4. Set the required time phases.
Procedure for setting a time program, refer to page 18.
Note: Between the time phases, DHW is not heated;
only frost protection for the DHW tank is active.
When setting time programs, please bear in mind
that your heating system requires some time to
heat the DHW tank to the required temperature.
DHW heating outside of the time program
Note: The operating program “Heating and DHW” or
“Only DHW” must be set for at least one system
heating circuit.
Extended menu
1.
2. “Heating”
3. “Party mode”
4. Disable “Party mode” again with “OFF” to prevent
unintentional central heating with standard room
temperature.
Setting the time program for the DHW recirculation pump
The time program for the DHW recirculation pump is
preset to Automatic mode at the factory. In other words,
the DHW recirculation pump operates in parallel to the
DHW heating time program.
H If you don’t want the automatic mode, you can select
up to 4 individual time phases per day for the DHW
recirculation pump, which can be the same for every
day of the week or different. Set the start and end
points for each time phase.
H In the “Information” menu, you can scan the current
time program (see chapter “Scanning information”,
“DHW” group).
Note: Activating the DHW recirculation pump is only
advisable for those times when DHW is actually
drawn.
Extended menu:
1.
2. “DHW”
3. “DHW circ time prog”
4. Set the required time phases.
Procedure for setting a time program, refer to page 18.
Note: Between time phases the DHW recirculation pump
remains off.
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Switching Off DHW Heating
DHW Heating
You do not want to heat DHW or provide central
heating
You do not want to heat DHW, but do want to provide
central heating
For the primary heating circuit (refer to page 30)
Standard menu
1. for the operating program “Standby mode”
(frost protection is active).
2. OK to confirm.
--
For all heating circuits
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating program”
5. “Standby mode” (frost protection active)
Extended menu
1.
2. “Heating”
3. Poss. for the required heating circuit.
4. “Heating program”
5. “Heating and DHW”
6. until the menu is displayed.
7. “DHW”
8. “Set DHW temperature”
9. Set 50°F (10°C).
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Additional Adjustments
Setting the Display Contrast
Setting the Display Brightness
Entering Names for the Heating Circuits
Extended menu
1.
2. “Settings”
3. “Contrast”
4. Set the required contrast.
Extended menu
1.
2. “Settings”
3. “Brightness”
4. “Control” or “Screen saver”
5. Set the required brightness.
You can name all heating circuits individually. The
abbreviations “HC1”, “HC2” and “HC3” will be retained.
Extended menu
1.
2. “Settings”
3. “Name for heating circ.”
4. “Heating circuit 1”, “Heating circuit 2” or “Heating
circuit 3”
5. “Change?”
6. You can select the required symbol with .
7. takes you to the next character.
8. Press OK to accept all entered characters at once
and simultaneously exit this menu.
Note: You can delete the name entered with “Reset?”.
Example: Name for “Heating circuit 2”: Apartment
The menu shows “Apartment” for “Heating circuit 2”.
If you would like the texts in the menu to be more
clearly legible, change the brightness for “Control”.
You can also alter the screen saver brightness.
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Additional Adjustments
Setting the Primary Heating Circuit for the Standard Menu
The time and date are factory-set. If your heating system
has been without power for a long time, it may be
necessary to set the time and date.
Extended menu:
1.
2. “Settings”
3. “Time/Date”
4. Set the time and date.
Setting the Time and Date
Language Selection
Extended menu:
1.
2. “Settings”
3. “Language”
4. Select the required language with
5. Accept by pressing OK.
If your heating system has several heating circuits,
you can select the heating circuit to be displayed in
the standard menu.
Extended menu
1.
2. “Settings”
3. “Standard menu”
4. Select the heating circuit:
- “Heating circuit 1” (for heating circuit 1)
“HC1” is displayed
- “Heating circuit 2” (for heating circuit 2)
“HC2” is displayed
- “Heating circuit 3” (for heating circuit 3)
“HC3” is displayed
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Additional Adjustments
You can reset the factory settings of all modified values
for each heating circuit separately.
Extended menu:
1.
2. “Settings”
3. “Standard setting”
4. “Heating circuit 1”, “Heating circuit 2” or
“Heating circuit 3”
Setting the Temperature Unit °F (°C)
Restoring Factory Settings
Factory setting: °C
Extended menu:
1.
2. “Settings”
3. “Temperature unit”
4. Select the temperature unit “°C” or “°F”.
System setting Settings and values that are reset
“Heating circuit 1”, “Heating circuit
2” or “Heating circuit 3”
H Set room temperature: 68°F (20°C)
H Set reduced room temperature
H Operating program
H Set DHW temperature
H Time program for central heating
H Time program for DHW heating
H Time program for DHW recirculation pump
H Heating curve slope and shift
H Comfort and energy saving functions (“Party mode”,
“Economy mode”, “Holiday program”) are deleted.
Note: If heating circuits have been named (see chapter
“Naming heating circuits”) the assigned name is
retained.
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32
Scanning
Scanning Information
Subject to the connected components and settings
made, you can scan current temperatures and operating
conditions.
The extended menu splits the information into groups:
H “General”
H “Heating circuit 1”
H “Heating circuit 2”
H “Heating circuit 3”
H “DHW”
H “Solar”
H “Reset data”
Note: If heating circuits have been named, the name is
displayed (see section “Entering names for the
heating circuits”). Detailed options for calling up
data on individual groups can be found in chapter
“Calling up options under information”.
Extended menu:
1.
2. “Information”
3. Select the group.
4. Select the required information.
Calling up the solar yield in conjunction with solar thermal
systems
Extended menu:
1.
2. “Solar energy”
The solar energy yield is shown in diagrammatic form.
The flashing line on the graph indicates that the current
day is not yet over.
Note: Further options for calling up data, e.g. for the
solar circuit pump hours run, can be found in the
extended menu under “Information” in the “Solar”
group.
Resetting data
You can reset the following data:
H Burner hours run.
H Fuel consumption.
H In conjunction with a solar thermal system:
Solar energy yield, solar circuit pump hours run and
hours run output 22.
H All the above data simultaneously.
Extended menu:
1.
2. “Information”
3. “Reset data”
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Scanning
Scanning the Service Messages
If your heating system is due for a service, the symbol
flashes in the display, and “Service” appears.
1. You can call up the reason for the service with
OK
.
2. Pressing
?
calls up information on the service that
is due.
3. If you want to acknowledge the service message,
follow the instructions in the menu. Contact your
local heating contractor. The service message is
transferred to the menu.
Note: If the service can only be carried out at a later date,
the service message is displayed again the following
Monday.
Calling up an acknowledged service message
Extended menu:
1.
2. “Service”
Display in the standard menu
Display in the extended menu
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Scanning
Scanning Fault Messages
If any faults have occurred in your heating system, the
symbol
2
flashes in the display, and “Fault” appears.
The red fault indicator also flashes (see chapter “Starting
the heating system”).
1. You can call up the cause of the fault with
OK
.
2. Pressing
?
calls up information on the heating system
performance. Tips on which measures you can take
yourself before notifying your heating contractor are
also displayed.
3. Make a note of the cause of the fault and the fault
code next to it on the right. In this example: “Outside
temp sens 18” and “Fault A2”. This enables the
heating contractor to be better prepared for the
service call and may save additional time and costs.
4. If you want to acknowledge the fault
message, follow the instructions in the menu.
The fault message is transferred to the menu.
Note: - If you have connected up signalling equipment
(e.g. a buzzer) for fault messages, this is
deactivated when the fault message is
acknowledged.
- If the fault can only be rectified later, the fault
message will be displayed again the next day at
7:00 h, when the signalling equipment (if installed)
is switched on again.
Calling up an acknowledged fault message
Extended menu:
1.
2. “Fault”
WARNING
If faults are not rectified, they can have life threatening
consequences. Do not acknowledge fault messages
several times in quick succession. If a fault occurs
repeatedly, notify your heating contractor so the cause
can be analyzed and the fault rectified.
Display in the standard menu
Display in the extended menu
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Emissions
Emissions Test Mode
Emissions test mode should only be activated by a
certified technician during the annual inspection.
Extended menu:
1.
2. “Test mode”
3. “Flue gas test °C ON”
The following functions are activated:
H The burner is switched on (the display shows symbol
A).
Note: Burner start-up can be delayed, e.g. through fuel
oil preheating.
- The pumps are started and the mixing valves
remain in control function.
- The temperature controller regulates the boiler
water temperature.
Note: You can also enable emissions test mode if the
controls are locked out by your heating contractor.
Ending emissions test mode
H Automatically after 30 min.
H Press
OK
.
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36
Troubleshooting
Rooms are too Cold
Cause Remedy
The heating system is off. - Switch the ON/OFF switch ON (refer to diagrams on
page 20).
- Switch ON the mains isolator, (if installed outside the
boiler room).
- Reset the MCB in the power distribution board (main
domestic MCB).
H Control unit incorrectly adjusted.
H Remote control (if installed) set incorrectly.
See separate operating instructions
Central heating must be enabled.
Check settings and correct if required:
- Operating program (refer to page 21)
- Room temperature (refer to page 21)
- Time (refer to page 30)
- Time program central heating (refer to page 21)
- Heating curve (refer to page 22)
The DHW tank is being heated. Wait until the DHW tank has been heated up.
Possibly reduce the DHW draw-off rate or temporarily
reduce the standard DHW temperature.
No fuel. With LPG:
Check the fuel reserves and re-order if required.
With natural gas:
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
“Fault” is displayed, and the red fault indicator flashes. Call up and acknowledge the type of fault (refer to
page 34). If necessary, notify your heating contractor.
“Slab curing” is active. No action required.
After expiry of the slab curing time, the selected operating
program will become active.
“Combustion controller” is shown on the display. Press R (refer to diagram on page 20).
Acknowledge the fault (refer to page 34).
“Fault” is displayed and the red fault indicator on the
burner is illuminated.
Press the reset button on the burner. If there is no reset
button, switch the ON/OFF switch (refer to diagrams from
page 19) first OFF and then ON again.
Mixing valve motor faulty. Adjust the mixing valve manually.
WARNING
If faults are not rectified, they can have life threatening
consequences. Do not acknowledge fault messages
several times in quick succession. If a fault occurs
repeatedly, notify your heating contractor so the cause
can be analyzed and the fault rectified.
WARNING
If faults are not rectified, they can have life threatening
consequences. Do not acknowledge fault messages
several times in quick succession. If a fault occurs
repeatedly, notify your heating contractor so the cause
can be analyzed and the fault rectified.
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Troubleshooting
Cause Remedy
H Control unit incorrectly adjusted.
H Remote control (if installed) set incorrectly.
See separate operating instructions
Check settings and correct if required:
- Operating program (refer to page 21)
- Room temperature (refer to page 21)
- Time (refer to page 30)
- Time program central heating (refer to page 21)
- Heating curve (refer to page 22)
“Fault” is displayed, and the red fault indicator flashes. Scan and acknowledge the type of fault (refer to page
34. If necessary, notify your heating contractor.
Mixing valve motor faulty. Adjust the mixing valves manually.
Cause Remedy
The heating system is off. - Switch the ON/OFF switch ON (refer to diagrams on
page 20).
- Switch ON the mains isolator, if installed (outside the
boiler room).
- Reset the fuse/MCB in the power distribution board
(main domestic fuse/ MCB).
H Control unit incorrectly adjusted.
H Remote control (if installed) set incorrectly.
See separate operating instructions
Check settings and correct if required:
- DHW heating must be enabled (refer to page 26).
- DHW temperature (refer to page 26).
- Time program (refer to page 27).
- Time (refer to page 30).
No fuel. With LPG:
Check the fuel reserves and re-order if required.
With natural gas:
Open the gas shut-off valve. If necessary, check with
your gas supply utility.
“Fault” is displayed, and the red fault indicator flashes. Call up and acknowledge the type of fault (refer to page
34).
There is no Hot Water
Rooms are too Hot
The DHW is too Hot
Cause Remedy
The control unit is incorrectly adjusted. Check and correct the DHW temperature if required
(refer to page 26).
Check and correct settings, if required, at the solar
control unit.
See separate operating instructions
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Troubleshooting
“ ” Flashes and “Service” is Displayed
Cause Remedy
Control was blocked by your heating contractor. Your heating contractor can lift this block.
Cause Remedy
The operating program set at the control unit was
changed by an external device, e.g. extension EA1.
No remedy is required.
Cause Remedy
The operating program set at the control unit was
changed by the Vitocom communication interface
You can change the operating program.
Cause Remedy
The time for a service, as specified by your heating
contractor, has arrived.
Proceed as described on page 33.
“Controls Locked Out” is Displayed
“External Hook-up” is Displayed
”External Program” is Displayed
“
2
” Flashes and “Fault” is Displayed
Cause Remedy
Heating system fault. Proceed as described (refer to page 34).
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Maintenance
Inspection/Cleaning/Maintenance
Safety valve (DHW tank)
The safety valve function should be checked every six
months by venting, either by the system user or the
local heating contractor. The valve seat may become
contaminated (see the valve manufacturer’s instructions).
Potable water filter (if installed)
To maintain high hygienic standards, proceed as follows:
H Replace filter element on non-back flushing filters every
six months (visual inspection every two months).
H On back flushing filters, back flush every two months.
Cleaning
All equipment can be cleaned with a commercially
available domestic cleaning agent (non-scouring).
Clean the surface of the programming unit with the
microfibre cloth provided.
Inspection and maintenance
Regular maintenance ensures trouble free, energy
efficient, environmentally responsible and safe heating.
Your heating system must be serviced by an authorised
contractor at least every 2 years. For this, we advise
you to arrange an inspection and maintenance contract
with your local heating contractor.
Boiler
Increasing boiler contamination raises the flue gas
temperature and thereby increases energy losses.
For that reason, all boilers should be cleaned annually.
DHW tank
Maintenance and cleaning should be carried out no later
than two years after commissioning and thereafter as
required.
Only a qualified heating contractor should clean the
inside of a DHW tank and the DHW connections.
Refill any water treatment equipment (e.g. water softener
or water filtration unit) on time, if such equipment is
installed in the cold water supply of the DHW tank.
Observe the manufacturer’s instructions.
Additionally for a Vitocell 100:
We recommend that the correct function of the sacrificial
anode is checked annually by your heating contractor.
The anode function can be checked without interrupting
the system operation. The heating contractor will
check the earth current with an anode tester.
Vitocrossal 300 CU3A 26 to 199 Operating
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40
Overview of Extended Menu
Additional Information
Heating
DHW
Information
Settings
Test mode
Solar energy
General
Heating circuit 1 HC1
Heating circuit 2 HC2
Heating circuit 3 HC3
DHW
Solar
Reset data
Time / Date
Language
Contrast
Brightness
Temperature unit
Name for heating circ.
Main menu
Factory default setting
DHW temp setpoint
Detailed scan
options
see following
page.
DHW time program
DHW circ time prog
Party mode
Economy mode
Room temp setpoint
Red. room temp setpoint
Operating program
Heating time program
Holiday program
Heating curve
Heating and DHW
Only DHW
Standby mode
Zone circuit 3
Zone circuits
Zone circuit 1
Zone circuit 2
Zone circuit 3
Zone circuit 1
Zone circuit 2
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Additional Information
Calling up Options Under “Information”
Scanning options in the extended menu
Note: Subject to the actual heating system equipment
level, not all of the scans listed here may be
available. You can view more details on the
information marked with .
Solar
“Collector temp”
“Solar DHW”
“Solar circuit pump” (hours run)
“Solar energy history”
“Solar energy”
“Solar circuit pump” (ON/OFF) or
“Solar circ pump speed”
“Heating suppr. DHW”
“SM1 output 22” (ON/OFF)
“SM1 output 22” (hours run)
“Sensor 7”
“Sensor 10”
“Heat suppr. heating”
“Temperature set point”
“Slope”
“Shift”
“Contact Input”
DHW
“DHW time program”
“DHW circ time prog”
“DHW temperature”
“DHW loading pump”
“DHW circ pump”
Heating circuit 2, 3 (HC2, HC3)
“Operating program”
H “External hook-up”
H “Holiday program”
H “External program”
H “Party mode”
H “Economy mode”
H “Heating and DHW”
H “Only DHW”
H “Standby mode”
“Operating status:”
H “Standard heating mode”
H “Reduced mode”
H “Standby mode”
“Time program”
“Set room temperature”
“Room temperature”
“Set reduced room temp”
“Set ext. room temp”
“Set party temp”
“Slope”
“Shift”
“Heating circ pump”
“Mixing valves”
“Supply temperature”
“Return temp”
“Holiday program”
Heating curve slope
Heating curve shift
Zone circuit 1
Zone circuit 2
Zone circuit 3
Heating circuit 1 (HC1)
“Operating program”
H “External hook-up”
H “Holiday program”
H “External program”
H “Party mode”
H “Economy mode”
H “Heating and DHW”
H “Only DHW”
H “Standby mode”
“Operating status:”
H “Standard heating mode”
H “Reduced mode”
H “Standby mode”
“Time program”
“Room temp setpoint”
“Room temperature”
“Red. room temp setpoint”
“Set ext. room temp”
“Set party temp”
“Slope”
“Shift”
“Heating circ pump”
“Holiday program”
General
“Outside temp”
“Boiler temperature”
“Flue gas temp”
“Sensor 9”
“Burner”
“Operating hours”
“Burner stage 1”
“Hours run”
“Burner stage 2”
“Hours run”
“Fuel consumption”
“Feed pump”
“Block 3rd pty dev”
“Compiled fault msg.”
“Participant no.”
“Input ext. EA1”
“Time”
“Date”
“Radio clock signal”
Vitocrossal 300 CU3A 26 to 199 Operating
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42
Additional Information
Terminology
Operating program
The operating program determines whether you heat
your rooms and DHW, or only heat DHW, or whether
you switch off central heating (with frost protection
monitoring).
Operating status
In the operating program “Heating and DHW”, the
operating status changes from “Standard heating mode”
to “Reduced heating mode” and vice versa.
The times for the operating status changeover are defined
by you when setting the time program.
Extension kit for heating circuit with mixing valve
Assembly (accessory) for controlling a heating circuit
with mixing valves. See “Mixing valves”.
Mixing Valve
A mixing valve mixes the water heated in the boiler
with the cooled water returning from the heating circuit.
The water, heated to the right temperature in line with
demand, is delivered to the heating circuit by the heating
circuit pump. The control unit adjusts the heating circuit
supply temperature via the mixing valve to the various
conditions, e.g. different outside temperature.
Under floor heating system
Under floor heating systems are slow, low temperature
heating systems and only respond very slowly to short
term temperature changes.
Therefore, heating to the reduced room temperature at
night and enabling “Economy mode” during short
absences do not result in significant energy savings.
Heating mode
Standard heating mode
For periods when you will be at home during the day,
use the standard room temperature to heat your
rooms. Set the periods (time phases) using the time
program for central heating.
Reduced heating mode
For periods when you will be absent or during the
night, heat your rooms to the reduced room temperature.
Set the periods using the time program for central
heating. With underfloor heating systems, reduced
heating mode only yields limited energy savings (see
“Underfloor heating”).
Room temperature-dependent heating mode
With room temperature-dependent operation a room
will be heated until the selected set room temperature
has been reached. A separate temperature sensor
must be installed in the room for this purpose.
The heating output is regulated independent of the
outside temperature.
Weather-compensated heating mode
In weather-compensated operation, the supply
temperature is controlled according to the outside
temperature.
This means that only that amount of heat is generated
that is necessary to heat the rooms to the room
temperature you selected.
The outside temperature is captured and transmitted to
the control unit by a sensor fitted outside the building.
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Additional Information
Terminology (continued)
Heating curve
Heating curves illustrate the relationship between the
outside temperature, room temperature (set value) and
boiler water or (heating circuit) supply temperature. The
lower the outside temperature, the higher the boiler
water temperature or heating circuit supply temperature.
In order to guarantee sufficient heat and minimum fuel
consumption at any outside temperature, the conditions
of your building and your heating system must be
taken into consideration. For this, you can adapt the
heating curve yourself.
Note: If your heating system includes heating circuits with
mixing valves, then the supply temperature for the
heating circuit without mixing valve is higher by
a selected differential than the supply temperature
for the heating circuits with mixing valve.
The illustrated heating curves apply with the following
settings:
H Heating curve shift = 0
H Standard room temperature (set value) = 68°F (20ºC)
Note: Setting the slope or shift of the heating curve too
high or too low will not result in damage to your
heating system.
Both settings affect the shift of the supply
temperature, which may then be too low or
unnecessarily high.
Tips on when and how to change the heating curve
slope and shift are displayed by pressing ?.
Boiler water or supply
temperature
Room
set-point
temperature
Outdoor temperature
Slope
Example:
For outside temperature 7°F (-14°C):
A Underfloor heating system, slope 0.2 to 0.8
B Low temperature heating system, slope 0.8 to 1.6
C Heating system with a boiler water temperature in
excess of 167°F (75°C), slope 1.6 to 2.0
Legend
A Changing the slope:
The gradient of the heating curves changes.
B Changing the shift:
The heating curves are shifted in parallel in a vertical
direction.
C Changing the standard room temperature (set
value):
The heating curves are offset along the “Set room
temperature” axis.
Room
set-point
temperature
Outdoor temperature
Boiler water or supply
temperature
Technical information subject to change without notice. Printed on environmentally friendly
(recycled and recyclable) paper.
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Vitocrossal 300 CU3A 26 to 199 Operating
Heating circuit
A heating circuit is a sealed circuit between the boiler
and radiators, in which the heating water circulates.
A heating system may comprise several heating circuits.
For example, one heating circuit for the rooms
occupied by you and one heating circuit for the rooms
of a separate apartment.
Heating circuit pump
Circulation pump for the circulation of the heating
water in the heating circuit.
Room temperature
H Standard room temperature:
For periods when you will be at home during the day,
set the standard room temperature.
H Reduced room temperature:
For periods when you will be absent or during the
night, set the reduced room temperature. See also
“Heating mode”.
Safety valve
A safety device that must be installed in the cold water
pipe by your heating contractor. The safety valve
opens automatically to prevent excess pressure in the
DHW Tank.
Solar circuit pump
In conjunction with solar thermal systems.
The solar circuit pump transports the heated heat
transfer medium from the collectors into the indirect
coil of the DHW tank
Set temperature
Default temperature that should be reached; e.g. set
DHW temperature.
DHW pump
Circulation pump for heating the DHW in the DHW tank.
Drinking water filter
A device that removes solids from the drinking water.
The drinking water filter is installed in the cold water
pipe upstream of the DHW tank or the instantaneous
water heater.
Weather-compensated heating mode
See “Heating mode”.
DHW recirculation pump
The DHW recirculation pump transports the DHW
around a ring pipeline between the DHW tank and
the draw-off points (e.g. hot tap). This ensures that hot
water is rapidly available at the draw-off point.
Terminology (continued)
Additional Information
