Viessmann VITOTRONIC 300-K Technical data

Installation and Service
Instructions
for use by heating contractor
Vitotronic 300, Type GW5B
Digital boiler control unit
Vitotronic 300-K, Type MW1B
Weather-compensated digital cascade control unit
VITOTRONIC 300, GW5B
VITOTRONIC 300-K, MW1B
Vitotronic 300, GW5B
Vitotronic 300-K, MW1B
Product may not be exactly as shown
IMPORTANT
Certified as a component
part for Viessmann boilers
5693 973 - 05
02/2015
Read and save these instructions
for future reference.
Please file in Service Binder
General
Vitotronic 300, GW5B and MW1B Installation and Service
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).
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.
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.
For a listing of applicable literature,
please see section entitled “Important
Regulatory and Safety Requirements”.
Operating and Service Documentation
Licensed professional heating contractor
The installation, adjustment, service and maintenance
of this equipment must be performed by a licensed
professional heating contractor.
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.
Please see section entitled
“Important Regulatory and Installation
Requirements”.
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 begin.
Warranty
Information contained in this and
related product documentation must
be read and followed. Failure to do
so renders the warranty null and void.
Product Information
Vitotronic 300, Type GW5B
For installation in or mounting on Viessmann boilers only.
Applicable to the following control units
Order No. 7134555, 7143156, 7511362 from
Serial No. 7143000
Order No. 7134555, 7143156, 7511362 from
Serial No. 7187101
2
5693 973 - 05
Order No. 7134555, 7143156, 7511362 from
Serial No. 7248248
Vitotronic 300, GW5B and MW1B Installation and Service
Table of Contents
Page
5693 973 - 05
General
Safety, Installation and Warranty Requirements..............2
Product documentation......................................2
Warranty..........................................................2
Licensed professional heating contractor..............2
Advice to owner................................................2
Operating and Service Documentation..................2
Product Information....................................................2
Safety
About these Instructions.............................................6
For your Safety..........................................................7
Operation.........................................................7
Flue gas smell...................................................7
Working on the equipment..................................7
Maintenance and cleaning .................................7
Technical Data Manual.......................................7
If you smell gas................................................7
In emergencies..................................................7
Installation of additional components...................7
Boiler room conditions.......................................7
Safety Terminology.....................................................7
Preparing for Installation
Designation in the System Example...............................8
Overview of System Example.......................................8
System Example.........................................................9
Installation, Vitotronic 300, GW5B
Overview of Electrical Connections.............................15
120V External Connection Overview....………………..…17
Inserting Cables and Applying Strain Relief..................18
Inserting the Boiler Coding Card.................................18
Inserting the LON Communication Module...................19
Connecting Sensors..................................................19
120V External Connection…………………………..………19
Connecting Actuators................................................21
Connection the Central Fault Massage Facility..............22
Connection of low Water Cut-off Device…………………22
Connections to Terminal 150………………………….……23
Connections to Terminal 151………………………….……23
Blocking Boiler Externally / Adding to the Boiler Sequence...24
Connecting a Burner.................................................25
Preparing Boilers for Cascade Mode…………………....…25
Installation, Vitotronic 300-K
Overview of Electrical Connections.............................26
Mounting the Control Unit.........................................28
Inserting Cables/Leads and Applying Strain Relief………29
Connecting Pumps....................................................30
Connecting Sensors..................................................31
120V External Connection……………………………..……32
Connecting Actuators...............................................33
Connection Central Fault Massage Facility...................34
External Demand Via Switching Contact......................34
External Demand via 0-10V Input...............................35
External Blocking via Switching Contact......................35
External “Mixing Valve Closed” / “Mixing Valve Open”......36
External Heating Program Changeover.........................36
Making the LON Connection.......................................37
3
Table of Contents
Vitotronic 300, GW5B and MW1B Installation and Service
Power Supply
Power Supply...........................................................38
Opening and Closing the Control Units
Fitting the Control Unit Front......................................39
Opening the Control Unit...........................................39
Commissioning
Testing the High Limit Safety Cut-out..........................40
Changing the Language on the Vitotronic 300-K...........40
Setting the Date and Time the Vitotronic 300-K...........40
Matching the Coding Addresses to the System Version....41
Selecting the Boiler Sequence at the Vitotronic 300-K...42
Connecting the Control Unit to the LON......................43
Checking Actuators and Sensors at the
Vitotronic 300 GW5B...............................................46
Checking Actuators and Sensors at the
Vitotronic 300-K......................................................47
Adjusting Heating Curves...........................................48
Preparing for Installation
Installation Sequences
4
Service Scans, Vitotronic 300, GW5B
Calling up Service Menu............................................50
Exiting Service Menu................................................50
Service Scans, Vitotronic 300-K
Calling up Service Menu............................................51
Scanning Operating Data...........................................51
Brief Scan...............................................................52
Scanning and Resetting Service Display.......................52
Troubleshooting, Vitotronic 300, GW5B
Fault Codes.............................................................53
Troubleshooting, Vitotronic 300-K
Fault Display............................................................55
Fault Codes..............................................................56
Function Description
Boiler Temperature Control of the
Vitotronic 300 GW5B...............................................60
Cascade Control of the Vitotronic 300-K.....................62
Heating Circuit Control Unit of the Vitotronic 300-.......65
DHW Tank Temperature Control of the
Vitotronic 300-K.......................................................69
5693 973 - 05
Page
Vitotronic 300, GW5B and MW1B Installation and Service
Table of Contents
Page
Code 1, Vitotronic 300, GW5B
Calling up Coding Level 1..........................................71
Group 1 “General”....................................................71
Group 2 “ Boiler”......................................................72
Code 2, Vitotronic 300, GW5B
Calling up Coding Level 2..........................................73
Group 1 “General”....................................................74
Group 2 “ Boiler”......................................................78
Code 1, Vitotronic 300-K
Calling up Coding Level 1..........................................79
“General” Group.......................................................80
“Cascade” Group.....................................................81
“DHW” Group………….………………………………….……81
“Solar” Group..........................................................82
“Heating Circuit 1”, “Heating Circuit 2”,
“Heating Circuit 3” Group..........................................83
Code 2, Vitotronic 300-K
Calling up Coding Level 2..........................................86
“General” Group.......................................................87
“Cascade” Group.....................................................92
“DHW” Group..........................................................93
“Solar” Group...........................................................95
“Heating Circuit 1”, “Heating Circuit 2”,
“Heating Circuit 3” Group..........................................98
Wiring, Vitotronic 300, GW5B
Connection and Wiring Diagram................................103
Wiring, Vitotronic 300-K
Connection and Wiring Diagram................................106
Components
Sensors.................................................................110
Boiler Coding Card..................................................111
Mixing Valve Motor Kit............................................111
Extension EA1 Accessory (optional).........................112
Parts Lists
5693 973 - 05
Specification
Parts List Vitotronic 300, GW5B..............................113
Parts List Vitotronic 300-K......................................114
Specification Vitotronic 300, GW5B.........................115
Specification Vitotronic 300-K.................................115
5
Safety
Vitotronic 300, GW5B & MW1B Installation and Service
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.
WARNING
Warnings draw your attention to the presence of
potential hazards or important product information.
Indicates an imminently hazardous situation which,
if not avoided, could result in loss of life, serious injury
or substantial product/property damage.
CAUTION
Cautions draw your attention to the presence of
potential hazards or important product information.
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product/
property damage.
IMPORTANT

Helpful hints for installation, operation or maintenance
which pertain to the product.
This symbol indicates that additional, pertinent
information is to be found.
6
5693 973 - 05
This symbol indicates that other instructions must
be referenced.
Safety
Vitotronic 300, GW5B & MW1B Installation and Service
For your Safety
CAUTION
Follow these safety instructions closely to avoid the risk
of injury and damage to property.
H 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.
H Flue gas smell
- Deactivate heating equipment.
- Open windows and doors.
- Inform your heating contractor.
H 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.
H Dangerous conditions
- Deactivate main power immediately.
- Close gas supply valve.
H Maintenance and cleaning
Regular inspection and service by a qualified heating
contractor is important to the performance of the boiler.
Neglected maintenance impacts on warranty; regular
inspection ensures clean, environmentally friendly and
efficient operation. We recommend a maintenance
contract with a qualified heating contractor.
H Technical Data Manual
- Installation Instruction and Service Instructions
- Operating Instructions and User’s Information Manual
Additional applicable literature:
- Accessory manuals
If you smell gas
H Don’t smoke! Don’t use naked flames or cause sparks
(e.g. by switching lights or electrical appliances on
and off)
H Open windows and doors
H Close the gas shut-off valve
H Inform your heating engineers/service contractors from
outside the building
H Observe the safety regulations of your gas supply
company (see gas meter) and those of your heating
engineers (see start-up or instruction report).
In emergencies
H Immediately switch off the power supply, e.g. at the
separate fuse or power supply disconnect switch
(unless there is a smell of gas).
H Close the shut-off valves in the oil pipes or close the
gas shut-off valve, whichever applicable.
H Use suitable extinguishers in the event of fire.
Installation of additional components
The installation of additional components which have not
been tested together with the boiler can adversely affect
the function and performance of the boiler.
Our warranty does not cover and weaccept no liability
for damage attributable to the installation of such
components.
Boiler room conditions
H Do not use a room in which the air is polluted by
halogenated hydro-carbons (e.g. as contained in
aerosols, paints, solvents and cleaning agents)
H Do not use a room subject to high levels of dust
H Do not use a room subject to permanently high humidity
H The room should be frost-protected
H Max. ambient temperature 95° F (35° C).
H Provide good ventilation and do not close or obstruct
vents (if installed).
This symbol indicates a reference to other instructions
which must be observed.
Safety Terminology
Take note of all symbols and notations intended to draw attention to potential hazards or important product
information. These include ”WARNING” and ”CAUTION”. See below.
WARNING
5693 973 - 05
Indicates an imminently hazardous situation which,
if not avoided, could result in substantial product /
property damage, serious injury or loss of life.
CAUTION
Indicates an imminently hazardous situation which,
if not avoided, may result in minor injury or product /
property damage.
7
Preparing for Installation
Vitotronic 300, GW5B and MW1B Installation and Service
Designations in the System Example
Overview of System Example
Boiler
Characteristics
Page
Vitocrossal, 200 CM2
Multi-boiler installation
9
H This system example is merely a generic layout and
must therefore be checked on site for completeness
and function.
H Connect three-phase consumers via additional
contactors.
8
5693 973 - 05
H With the Vitotronic 300-K, the communication module
is integrated.
Vitotronic 300, GW5B & MW1B Installation and Service
Preparing for Installation
System Example
Multi boiler system: Vitocrossal 200 CM2
Hydraulic installation layout
5693 973 - 05
Note: This layout is a basic example without shut-off
devices or safety equipment. This does not replace
the need for local engineering.
9
Preparing for Installation
System Example
6
7
8
9
qP
qQ
qE
qR
qT
qZ
qU
qI
wP
qO
wQ
qO
wQ
wW
wR
wE
wT
wE
wT
wZ
wI
wU
wO
10
(continued)
required
Description
Boiler I (cascade mode)
Neutralizing system
Boiler water temperature sensor KTS
Supply temperature sensor, common heating supply VTS as
contact temperature sensor (standard delivery for Vitotronic 300-K)
or
immersion temperature sensor
Outside temperature sensor ATS
Vitotronic 300-K
Vitotronic 300, GW5B
Boiler II (cascade mode)
Neutralizing system
Boiler water temperature sensor KTS
Vitotronic 300, GW5B
DHW tank
DHW tank temperature sensor STS
Circulation pump for DHW tank heating UPSB
DHW recirculation pump ZP
Heating circuit 2
Heating circuit pump M2
Extension kit for one heating circuit with mixing valve:
Supply temperature sensor M2 as contact temperature sensor
and
Mixing valve motor M2
or
Supply temperature sensor M2 as
contact temperature sensor
or
immersion temperature sensor
and
Mixing valve motor for flanged mixing valve M2
Heating circuit 3
Heating circuit pump M3
Extension kit for one heating circuit with mixing valve:
Supply temperature sensor M3 as contact temperature sensor
and
Mixing valve motor M3
or
Supply temperature sensor M3 as
contact temperature sensor
or
immersion temperature sensor
and
Mixing valve motor for flanged mixing valve M3
Heating circuit 1 at the Vitotronic 200-H
Heating circuit pump M1
Extension kit for one heating circuit with mixing valve:
Supply temperature sensor M1 as contact temperature sensor
and
Mixing valve motor M1
or
5693 973 - 05
Equipment
Pos.
1
2
3
5
Vitotronic 300, GW5B & MW1B Installation and Service
Vitotronic 300, GW5B & MW1B Installation and Service
System Example
Preparing for Installation
(continued)
Equipment required
Pos.
Description
Supply
temperature
sensor
M1
as
wU
contact temperature sensor
or
immersion temperature sensor
and
Mixing valve motor for flanged mixing valve M1
wO
Vitotronic 200-H
eP
and
LON communication module (accessory)
and
LON connecting cable (accessory)
Outside temperature sensor ATS
eQ
Boiler accessories
eE
eI
Connection to safety equipment aBÖ (see page 23)
Minimum pressure limiter SDB
Maximum pressure limiter SDB
Low water cutoff
Central fault message system
External hook-ups
- External changeover of stepped/modulating burners
- External boiler blocking
- Start boiler externally as the last one in the boiler sequence
System accessories
Vitotrol 200 A or Vitotrol 300 A
Central fault message system
rP
rI
tP
zP
zQ
ON/OFF switch
Vitocom 100 LAN1
KM BUS distributor, for several KM BUS participants
Extension EA1
1 switching output (floating changeover contact):
eR
eT
eZ
eU
eI
zR
zI
zO
- Switching a accessories pump to a substation
zW
zE
5693 973 - 05
zT
zZ
zU
uP
- Signalling reduced mode for a heating circuit
1 analogue input (0–10V):
- Specifying the set system supply temperature
3 digital inputs:
External heating program changeover, separately adjustable for heating circuits 1 to 3
External demand
External blocking with fault message
Fault message input
Short term operation of DHW recirculation pump
External hook-ups
- External blocking/mixing valve closed
- External demand
- External heating program changeover/mixing valve open
LON communication module (standard delivery Vitotronic 300-K) for communication with the following
components:
Vitotronic boiler and heating circuit control units
11
Preparing for Installation
System Example
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
12
5693 973 - 05
Electrical installation wiring
Vitotronic 300, GW5B & MW1B Installation and Service
5693 973 - 05
System Example
Preparing for Installation
(continued)
13
Preparing for Installation
System Example
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
Code required at every Vitotronic 300, GW5B
01:2
Group
Function
2 “Boiler”
Multi boiler system with cascade control via LON
Boiler number at the Vitotronic:
07:2
2 “Boiler”
Boiler 2
07:3
2 “Boiler”
Boiler 3
07:4
2 “Boiler”
Boiler 4
77:2
1 “General”
Vitotronic 300-K with two Vitotronic 300, GW5B
77:3
1 “General”
Boiler 3
77:4
1 “General”
Boiler 4
LON participant number at the Vitotronic:
Code required at the Vitotronic 300-K
Group
14
Function
System scheme without system circuit (heating circuit A1)
35:1
“Cascade”
Vitotronic 300-K with one Vitotronic 300, GW5B
35:2
“Cascade”
Vitotronic 300-K with two Vitotronic 300, GW5B
35:3
“Cascade”
Vitotronic 300-K with three Vitotronic 300, GW5B
35:4
“Cascade”
Vitotronic 300-K with four Vitotronic 300, GW5B
5693 973 - 05
00:3,
00:4,
00:7,
00:8
Installation, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Overview of Electrical Connections
Note: When connecting plugs aVD and aVH, bundle the
individual cores of the cables close to the terminals.
This prevents the cores from shifting into the
neighboring voltage area.
Main PCB low voltage
Main PCB 120V~
aJA Return temperature sensor T1
(optional accessory, not used)
aJB Return temperature sensor T2
(optional accessory, not used)
sÖA1
sL
fÖ
fA
gÖ
gSA1
aBÖ
aVD
aVG
aVH
External hook-up
KM BUS participant (accessory)
External hook-up
aBA
aBH
Switching output pump
Boiler circuit pump
Power supply
Burner (call for heat)
Central fault message
Isolation valve
External connections, e.g. supplementary safety
equipment
Safety chain, floating
Power supply connection for accessories
5693 973 - 05
Prior to making any connections ensure that the
control control and junction box have been installed as
per the boiler Installation Instructions.
15
Overview of Electrical Connections
16
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
5693 973 - 05
Installation, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300, GW5B
120V External Connection Overview
Legend
A Pumps
B To the control unit
Pumps 120V
Available pump connections
sÖM1/A1 Switching contact
sL
Boiler pump
5693 973 - 05
Rated current: 2A~
* Maximum output 6FLA shared between all
120V outputs.
17
Installation, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Inserting Cables and Applying Strain Relief
H Control unit fitted on the boiler:
Route cables from below through the front panel of the
boiler into the wiring chamber of the control unit.
H Control unit fitted to the side of the boiler:
Route cables from below out of the cable channel into
the control unit.
Legend
A Cables with moulded strain relief
B On-site cables; strip up to 4 in. (100 mm) insulation
Inserting the Boiler Coding Card
Only use the boiler coding card supplied with the boiler
(see table in chapter “Components”).
Insert the boiler coding card into slot “X7”, through the
recess in the cover.
Coding card Part no.
Vitocrossal 200, CM2
1042
7841113
5693 973 - 05
18
Boiler
Installation, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Inserting the LON Communication Module
Making the LON connection, see page 37.
Connecting Sensors
Legend
Main PCB low voltage
aJA Return temperature sensor T1 (optional accessory)
aJB Return temperature sensor T2 (optional accessory)
120V External Connection
5693 973 - 05
120V pumps with an amperage draw of <2FLA
A Din rail
B Pump
19
Installation, Vitotronic 300, GW5B
120V External Connection
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
120V pumps with an amperage draw of >2FLA
Contactor specification 120VAC 1A
A Din rail
B Contactor/relay (field supplied)
C Pump
D Power supply w/disconnect and protection
240V pumps
Contactor specification 120VAC 1A
A Din rail
B Contactor/relay (field supplied)
C Pump
D Power supply w/disconnect and protection
208/460/575V 3 phase pumps
20
5693 973 - 05
Contactor specification 120VAC 1A
A Din rail
B Contactor/relay (field supplied)
C Pump
D Power supply w/disconnect and protection
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300, GW5B
Connecting Actuators
Legend
A 24V Mixing Valve Adaptor
B DIN Rail (in junction box)
C 24V Valve Actuator
D Valve
Legend
A 120V Mixing Valve Adaptor
B DIN Rail (in connection enclosure)
C 120V Valve Actuator
D Valve
120V Valve Adaptor
Rated voltage:
Rated current:
1. Disconnect power to control.
120VAC
max. 0.1 FLA
2. Install 120V or 24V valve adaptor on DIN rail inside
connection enclosure.
3. Insert the plug gS into socket gS on the Vitotronic
control.
24V Valve Adaptor
Rated voltage:
Rated current:
24VAC
max. 0.15 FLA
Operating time: 5 to 199 sec. selected via coding
address “40”.
4. Fasten cable with tie.
5. Connect black wire of the adaptor to terminals 8,9 or
10 on the Din rail.
6. Connect valve actuator wires to the adaptor terminals
Available connections
5693 973 - 05
gS A1 Motor for 3-way mixing valve, primary store system
gS M2 For heating circuit 2
gS M3 For heating circuit 3
Rated voltage:
Rated current Max.:
Motor runtime for
3-way mixing valve:
120V~
0.1A~
10 to 255 sec, adjustable via
coding addresses “6A” in
the”DHW”group, “C3” in the HC2
group and “C3” in the HC3 group.
21
Installation, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Connecting the Central Fault Message Facility
Rated voltage
Rated current
120V~
max. 2A~
Connection of Low Water Cut-off Device
1. Remove jumper between terminals 12 and 15.
2. Make connection as shown in diagram.
CAUTION
The diagram shown is only a simplified conceptual
drawing of a typical low water cut off (LWCO) device.
Refer to the manual specific to the device for
interconnection details.
22
5693 973 - 05
aBH Power supply for accessories.
aBÖ Connection for external equipment.
A Low water cut-off (typical)
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300, GW5B
Connections to Safety Equipment
1. Connect the external safety equipment in series.
Legend
A DIN rail
B Low water cutoff
C Other safety controls
Connections to Terminal aBA
External shut-off
1. Remove jumper between terminals 19 and 20.
2. Connect dry contact. Controlled switch-off takes place
when the contact is opened.
WARNING
5693 973 - 05
The terminals should be used for safety switch-off
purposes only (e.g. through a high limit thermostat).
During switch-off, there is no frost protection of the
heating system and the boiler is not kept at the minimum
boiler water temperature.
23
Installation, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Blocking Boiler Externally/Adding to the Boiler Sequence
Connection at plug aVD.
Note: ‘Live’ contacts lead to short circuits or phase
failure. The external connection must be floating.
Contact A:
H Contact closed:
The boiler is removed from the boiler sequence.
The isolation valve or the 3- way mixing valve are
closed for constant return temperature control.
Shunt pump or boiler circuit pump are switched off.
The heat demand has to be met by the other boilers.
Legend
A Blocking boiler externally (dry contact)
B Start boiler externally as the last one in the boiler
sequence (dry contact)
Note: If all boilers are blocked or there is no other boiler
available for duty, there will be no frost protection
for the heating system.
H Contact open:
The boiler is integrated into the current boiler sequence.
Contact B:
H Contact closed:
The heat demand of the heating system is met by the
other boilers. This boiler is started if the output of these
boilers is insufficient.
24
5693 973 - 05
H Contact open:
The boiler is integrated into the current boiler sequence.
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300, GW5B
Connecting the Burner
The burner cables are included in the standard boiler
delivery.
Max. power consumption 3A.
Terminal codes
L
Burner control power supply
? Ground conductor to burner
N
Neutral conductor to burner
T1 120V~ from boiler control unit
T2 Base load demand
S3 Connection for burner fault
B4 Connection for hours run meter
Legend
A To the Vitotronic control
B To the burner (burner control unit)
C KM BUS cable
Preparing Boilers for Cascade Mode
IMPORTANT
The following procedure must be done to configure each
boiler for constant temperature control (cascade control)
mode.
1. Turn on the boiler and set the language then press
‘OK’.
2. Set the time and date and press ‘OK’.
Refer to the boiler Installation Instructions.
3. Press and hold OK and
up.
until service menu comes
4. Scroll using
to the service functions, press OK.
5. Scroll using
to the multi-boiler system.
6. Press OK.
7. Scroll using
to “Yes”.
8. Press OK.
Note: The boiler will restart in cascade mode.
5693 973 - 05
9. Set the language and press ‘OK’.
Refer to the boiler Installation Instructions.
25
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Overview of Electrical Connections
Note: When connecting plugs aVD, aVH, sA, sK, ?
M2/M3 and sÖ M2/M3, bundle the individual
wires of the cables close to the terminals.
This ensures that, should there be an error, for
example when detaching a wire, the wires cannot
drift into the adjacent voltage area.
Extension for heating circuits 2 and 3 with mixing valve
Main PCB 120V~
? M2/M3 Supply temperature sensor
sÖ M2/M3 Heating circuit pump
gS M2/M3 Mixing valve motor
sÖA1 Heating circuit pump
or
Primary pump, primary store system
sA
Circulation pump for DHW tank heating
(optional accessory, not used)
!
§/?
%A
%B
aJB
aVD
aVG
aVH
LON
26
Outside temperature sensor
Supply temperature sensor, common heating flow
DHW tank temperature sensor
DHW tank temperature sensor 2 for primary store
system (optional accessory, not used)
Return temperature sensor T2 (optional accessory,
not used)
or
Temperature sensor primary store system
(optional accessory, not used)
External hook-up
KM BUS participant (optional accessory, not used)
External hook-up
LON BUS, connecting cable for data exchange with
the Vitotronic 300, GW5B, 200-H, Vitocom and
Vitogate
sK
sL
fÖ
gÖ
gSA1
aBH
DHW recirculation pump (on site)
Shunt pump or distribution pump (on site)
Power supply
Central fault message
Motor for 3-way mixing valve, primary store system
or
Motor for 3-way mixing valve, return temperature
control
Power supply connection for mixing valve module
circuit M2 and M3
Note: When inserting cables and applying strain relief
see page 29.
5693 973 - 05
Main PCB low voltage
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300-K
Overview of Electrical Connections, Vitotronic 300-K
(continued)
5693 973 - 05
Legend
A Vitotronic 300-K
B Din rail
27
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Mounting the Control Unit
1. Fasten metal backplate onto mounting surface with
four fasteners.
2. Position midplate between backplate and connection
enclosure.
3. Install midplate and connection enclosure onto
backplate.
4. Fasten connection enclosure and midplate onto
backplate with two fasteners.
5. Install control rear section onto connection enclosure
housing. Hook control onto backplate tabs and pivot
downwards.
28
5693 973 - 05
6. Fasten control rear section onto connection enclosure
with two fasteners.
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Inserting Cables/Leads and Applying Strain Relief
Run the cables from the connection enclosure into the
control unit.
Apply strain relief to cables.
Cables with moulded strain relief clamp:
Connect cable and strain relief clamp.
OR
Fasten cable to the cable lead with cable tie.
5693 973 - 05
Legend
A Cables with moulded strain relief
B On-site cables; strip up to 4 in. (100 mm) insulation.
29
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Connecting Pumps
*
*
Rated current: 2 A~
* Maximum pump output 6FLA shared between all
120V outputs.
30
Pumps 120V
Available pump connections
sÖM1/A1 High temperature circuit pump/
primary store pump
sÖM2
Heating circuit 2 pump
sÖM3
Heating circuit 3 pump
sA
DHW pump
sK
DHW recirculation pump
sL
System pump
5693 973 - 05
Legend
A120V outputs
B To the control unit
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300-K
Connecting Sensors
Installation point for outside temperature sensor
H North or north-western wall, 6.6 to 8.2 ft. (2 to 2.5 m)
above ground level; in multi storey buildings, in the
upper half of the second floor
H Not above windows, doors or ventilation outlets
H Not immediately below balconies or gutters
H Never render over
Outside temperature sensor connection
Two wire communication cable 18 AWG
5693 973 - 05
Legend
!
Outside temperature sensor
§/? Common supply temperature sensor
%A DHW tank temperature sensor 1
%B DHW tank temperature sensor 2 for primary
store system (optional accessory, not used)
aJB Return temperature sensor T2
or
Temperature sensor primary store system
(optional accessory, not used)
31
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
120V External Connection
120V pumps with an amperage draw of <2FLA
A Din rail
B Pump
120V pumps with an amperage draw of >2FLA
Contactor specification 120VAC 1A
A Din rail
B Contactor/relay (field supplied)
C Pump
D Power supply w/disconnect and protection
240V pumps
Contactor specification 120VAC 1A
A Din rail
B Contactor/relay (field supplied)
C Pump
D Power supply w/disconnect and protection
32
5693 973 - 05
208/460/575V 3 phase pumps
Contactor specification 120VAC 1A
A Din rail
B Contactor/relay (field supplied)
C Pump
D Power supply w/disconnect and protection
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300-K
Connecting Actuators
Legend
A 24V Mixing Valve Adaptor
B DIN Rail (in junction box)
C 24V Valve Actuator
D Valve
Legend
A 120V Mixing Valve Adaptor
B DIN Rail (in junction box)
C 24V Valve Actuator
D Valve
120V Valve Adaptor
Rated voltage:
120 VAC
Rated current:
max. 0.1 FLA
Recommended connection wire size: AWG 14
1. Disconnect power to control.
24V Valve Adaptor
Rated voltage:
24 VAC
Rated current:
max. 0.15 FLA
Recommended connection wire size: AWG 14
4. Fasten cable with tie.
Operating time: 5 to 199 sec. selected via coding
address “40”.
Available connections
2. Install 120V or 24V valve adaptor on DIN rail inside
connection enclosure.
3. Insert the plug gS into socket gS on the control.
5. Connect black wire of the adaptor to terminals 8,9 or
10 on the Din rail.
6. Connect valve actuator wires to the adaptor terminals
Refer to the mixing valve adaptor Installation
Instructions for additional information.
gS A1 Motor for 3-way mixing valve, primary store system
gS M2 For heating circuit 2
gS M3 For heating circuit 3
5693 973 - 05
Rated voltage:
Rated current Max.:
Motor runtime for
3-way mixing valve:
120V~
0.1A~
10 to 255 sec, adjustable via
coding addresses “6A” in
the”DHW”group, “C3” in the HC2
group and “C3” in the HC3 group.
33
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Connecting the Central Fault Message Facility
Rated voltage
Rated current
120V~
max. 2 A~
External Demand Via Switching Contact
Connection
Note: ‘Live’ contacts lead to short circuits or phase
failure. The external connection must be floating.
Connection options:
H Plug aVH
H Extension EA1 (accessory, see page 113)
Legend
A Floating contact
B Plug aVH of the control unit
With the contact closed, the boiler burners are started
subject to load. They heat to the set supply temperature
selected in coding address “9B” in the “General” group.
The temperature is limited by this set value and the
electronic maximum supply temperature limit (coding
address “37” in the “Cascade” group).
Legend
A Floating contact
B Extension EA1
34
Plug aVD
Extension EA1
No code required.
Set “5D”, “5E” or “5F” in the “General” group to 2.
5693 973 - 05
Codes
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
External Demand via 0–10V Input
Connection at input 0 – 10V at extension EA1
(see page 113).
0 - 1V
no default set supply temperature
1V
set value 50° F (10° C)
10V
set value 212° F (100° C)
Observe coding address “1E” in the “General” group.
External Blocking via Switching Contact
Connection options:
H Plug aVD
H Extension EA1 (accessory, see page 113)
Connection
Note: ‘Live’ contacts lead to short circuits or phase
failure. The external connection must be floating.
Legend
A Floating contact
B Plug aVD of the control unit
With the contact closed, the burners of all boilers will be
subject to a control shutdown.
Any connected shunt or distribution pump is stopped.
Shut-off devices are closed.
Note: The heating system has no frost protection during
blocking. The boilers are not held at the lower boiler
water temperature.
Legend
A Floating contact
B Extension EA1
5693 973 - 05
Codes
Plug aVD
Extension EA1
Set coding address “99” in the “General” group, which
the input should influence.
Set “5D”, “5E” or “5F” in the “General” group to 3 or 4.
35
Installation, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
External “Mixing Valve Closed”/”Mixing Valve Open”
Connection at plug aVD.
Note: ‘Live’ contacts lead to short circuits or phase failure.
The external connection must be floating.
Codes
External “Mixing valve
open”
External “Mixing valve
closed”
Via coding address “9A”
in the “General” group,
this function is assigned
to the heating circuits.
Via coding address “99”
in the “General” group,
this function is assigned
to the heating circuits.
Legend
A External “Mixing valve open” (floating contact)
B External “Mixing valve closed” (floating contact)
External Heating Program Changeover
Connection
Note: ‘Live’ contacts lead to short circuits or phase
failure. The external connection must be floating.
Connection options:
H Plug aVD
H Extension EA1 (accessory, see page 112)
Codes
Legend
A Floating contact
B Plug aVD of the control unit
Plug aVD
Extension EA1
This function is assigned
to the heating circuits via
coding address “91” in the
“General” group.
Set “5D”, “5E” or “5F” in
the “General” group to 1.
This function can be
assigned to the heating
circuits via coding address
“D8” in the “Heating
circuit...” group.
Legend
A Floating contact
B Extension EA1
(Contact open)
9
or
w
or
36
w
Central heating OFF/
DHW OFF
Central heating
OFF/DHW ON
Central heating
ON/DHW ON
Coding
D5:0

(factory set condition)
D5:1

Changed heating program
(Contact closed)
Permanent operation with reduced room
temperature/DHW OFF
Constant operation with standard room
temperature, DHW in accordance with
coding address “64”
5693 973 - 05
Preselected heating program
Vitotronic 300, GW5B & MW1B Installation and Service
Installation, Vitotronic 300-K
Making the LON Connection
Connection with Viessmann LON cable
The line may be up to ≤ 23 ft. (7 m) long
The Viessmann LON system is designed for the
“Line” BUS topology with a terminator at both ends
(accessories). The transfer distances for LON are subject
to the electrical properties of the respective cabling.
For this reason, only use the stated cable types.
Use only one type of cable within the LON.
Observe the cabling requirements for the operation of
the LON interface FTT 10-A (see www.echelon.com).
Legend
A Control unit or Vitocom
B LON cable, 23 ft. (7 m) long
C Terminator
All Viessmann equipment is connected via RJ45 plugs.
The Viessmann LON system always requires the cores
“1” and “2” and the screen. The cores are
interchangeable. The installation is therefore safe from
pole errors.
Connection with Viessmann LON cable and coupling
Connection with on-site cable and LON plug
≤ 3000 ft.
Installation spacing 23 to 69 ft. (7 to 21 m)
Legend
A Control unit or Vitocom
B LON cable, 23 ft. (7 m) long
Max. 3 cables between 2 appliances
C Terminator
D LON coupling
The line may be up to ≤ 3000 ft. (900 m)
(with LON plug)
Legend
A Control unit or Vitocom
B On-site cable
C Terminator
D LON plug
E Up to 99 participants
Connection with LON cable, on-site cable and LON
junction box
≤ 3000 ft.
5693 973 - 05
The line may be up to ≤ 3000 ft. (900 m) (with LON
junction boxes)
Legend
A Control unit or Vitocom
B LON cable, 23 ft. (7 m) long
C Terminator
D LON junction boxes
E On-site cable
F Up to 99 participants
37
Power Supply
Vitotronic 300, GW5B & MW1B Installation and Service
Power Supply
Legend
L: Line
N: Neutral
G: Ground
A Power supply 120VAC, 1PH, 60Hz, provide
disconnect means and overcurrent protection
as per local codes
B Terminals N, G and 11 (in junction box)
C Junction box
1. Ensure that the main power supply to the control
contains overcurrent protection with a minimum
rating of 6A and 2-pole disconnect.
WARNING
The control must be grounded.
Ensure that “L”, “N” and “G” are not interchanged.
38
5693 973 - 05
2. Connect power supply wire to the connection fÖ
terminals 11, N and G on the DIN rail inside the
junction box.
Vitotronic 300, GW5B & MW1B Installation and Service
Opening and Closing the Control Units
Fitting the Control Unit Front
Legend
A Cable retaining tab
Note: Route the ribbon cable through retainer A.
5693 973 - 05
Opening the Control Unit
39
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Testing the High Limit Safety Cut-out
The minimum circulation volume should be 10% of the
circulation volume at rated load.
Reduce the heat consumption as far as possible.
1.
Hold down the “TEST” key until the burner has shut
down: Thermostat is bridged. The high limit safety
cut-out must shut down the burner at the latest when
the safety temperature has been reached.
2.
Release the “TEST” key.
3.
Wait until the boiler water temperature has dropped
approx. 15 to 20 K below the selected safety
temperature.
4.
Reset the high limit safety cut-out by pressing reset
button.
Operating instructions
Changing the Language on the Vitotronic 300-K
At the commissioning stage, the display is in German
(default setting).
Extended menu:
1.
2. “Einstellungen” (Settings)
3. “Sprache” (Language) Deutsch DE (German)
4. Set the required language with
Setting the Date and Time on the Vitotronic 300-K
During commissioning, or after prolonged time out of use,
the time and date need to be reset.
Extended menu:
40
2.
“Settings”
3.
“Time / Date”
4.
Set current time and date.
5693 973 - 05
1.
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Matching the Coding Addresses to the System Version
Vitotronic 300, GW5B (set codes at every Vitotronic 300,
GW5B - boiler control)
Switching mode from standalone/weather compensated
control to constant temperature control (see page 25).
Vitotronic 300, GW5B
Check all addresses in Code 1 and adjust if required.
Check the following coding addresses and adjust
accordingly in Code 2:
Group
Function
“4C”
1 “General”
Function plug sÖ
“4D”
1 “General”
Function plug sL
“4E”
1 “General”
Function plug gS
“98”
1 “General”
Viessmann system number
“9C”
1 “General”
Monitoring LON participants
Vitotronic 300-K
Check all addresses in Code 1 and adjust if required.
Check the following coding addresses
and adjust accordingly in Code 2:
5693 973 - 05
Group
Function
“39”
“Cascade”
Permanent lead boiler
“3A”
“Cascade”
Permanent last boiler
“4C”
“General”
Function plug sÖ
“4D”
“General”
Function plug sL
“4E”
“General”
Function plug gS
“55”
“DHW”
DHW tank temperature control function
“7A”
“General”
Central control
“98”
“General”
Viessmann system number
“9C”
“General”
Monitoring LON participants
41
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Selecting the Boiler Sequence at the Vitotronic 300-K
Subject to the set codes in the “Cascade” group and
internal control calculations, the control unit offers various
boiler sequences.
Coding addresses that influence the boiler sequence:
“38”
Changing the lead boiler and the boiler
sequence
“39”
Permanent lead boiler
“3A”
Permanent last boiler
“41” to “44”
ECO thresholds
H Via the ECO threshold, every boiler can be blocked or
enabled subject to the outside temperature.
H If the boiler is required to achieve the set supply
temperature in the case of enabled boilers failing, the
ECO threshold is disabled.
H At least the lead boiler remains active if all boilers in
a system are blocked by the ECO threshold.
Press
“Boiler sequence”
.
3.
Select the required boiler sequence and confirm with
OK.
5693 973 - 05
42
1.
2.
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Connecting the Control Unit to the LON
Example of a multi boiler system
Legend
A Vitotronic 300 GW5B
B Vitotronic 300 GW5B
C Vitotronic 300-K
D Vitotronic 200-K
E Vitocom
F LON system
G Terminator
H The LON communication module must be fitted into
every Vitotronic 300, GW5B (see page 61).
Note: The communication module is integrated in the
Vitotronic 300-K.
H Vitotronic 200-H:
The LON communication module (accessory) must be
fitted.
Installation and service instructions,
Vitotronic 200-H
H Within one LON, the same participant number must not
be allocated twice.
H Within one LON, the system number (coding address
“98” in the “General” group) must always be the same.
H Only one Vitotronic may be programmed as fault
manager.
5693 973 - 05
H The data transfer via the LON system can take several
minutes.
43
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
A
B
Multi boiler system.
Set code “01:2” in
group 2 “Boiler”.
Multi boiler system.
Set code “01:2” in
group 2 “Boiler”.
--
--
--
Boiler number 1.
Code “07:1” in
group 2 “Boiler”.
Boiler number 2.
Set code “07:2” in
group 2 “Boiler”.
--
--
--
With LON
communication
module
Code “76:1” in
group 1 “General”;
automatic
recognition.
With LON
communication
module
Code “76:1” in
group 1 “General”;
automatic
recognition.
--
C
--
D
With LON
communication
module
Code “76:1” in
the “General”
group; automatic
recognition.
Number of connected
boilers.
Set codes
“35:1” to
“35:4” in the
“Cascade”group.
E
With LON
communication
module
Code “76:1” in
the “General”
group; automatic
recognition.
--
--
--
Participant no. 1.
Code “77:1” in group
1 “General”.
Participant no. 2.
Set code “77:2” in
group 1 “General”.
Participant no. 5.
Set code “77:5” in
the “General” group.
Participant no. 10.
Set code “77:10” in
the “General” group.
Participant no. 99.
Control unit is not
fault manager.
Code “79:0” in group
1 “General”.
Control unit is not
fault manager.
Code “79:0” in group
1 “General”.
Control unit is fault
manager.
Set code “79:1” in
the “General” group.
Control unit is not
fault manager.
Set code “79:0” in
the “General” group.
Device is fault
manager.
--
--
Control unit transmits
the time.
Code “7B:1” in the
“General” group.
The control unit
receives the time.
Set code “81:3” in
the “General” group.
Device receives the
time.
--
--
Control unit transmits
outside temperature.
Set code
“97:2” in the
“General” group.
Control unit
receives the outside
temperature.
Set code “97:1” in
the “General” group.
--
LON participant
remote monitoring.
Code “9C:20” in the
“General” group.
LON participant
remote monitoring.
Code “9C:20” in the
“General” group.
--
LON participant
remote monitoring.
Code “9C:20” in
group 1 “General”.
44
(continued)
LON participant
remote monitoring.
Code “9C:20” in
group 1 “General”.
5693 973 - 05
Connecting the Control Unit to the LON
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Connecting the Control Unit to the LON
(continued)
Carrying out a LON participant check at the Vitotronic
300-K
Communication with the system devices connected to the
fault manager is tested by means of a participant check.
Preconditions:
H The control unit must be programmed as fault manager
(code “79:1”).
H The LON participant no. must be programmed in all
control units (coding address “77”).
The LON participant list in the fault manager must be
up to date.
Carrying out the participant check:
1.
Press OK and
2.
“Service functions”
3.
“Participant check”
4.
Select participant (e.g. participant 10).
The participant check for the selected participant is
initiated.
H Successfully tested participants are designated with
“OK”.
H Unsuccessfully tested participants are designated
with “Not OK”.
simultaneously for approx. 4 sec.
Note: To carry out a new participant check, create a new
participant list with “Delete list?” (participant list is
updated).
5693 973 - 05
Note: H Vitotronic 300, GW5B:
During the participant check, the display for the
relevant participant flashes for approx. 1 min.
H Vitotronic 200-H:
During the participant check, the display for the
relevant participant shows the participant no.
and “Wink” for approx. 1 min.
45
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Checking Actuators and Sensors at the Vitotronic 300 GW5B
Testing the relay
1. Press OK and
simultaneously for approx. 4 sec.
2. “Actuator test”
Before an actuator is selected, all actuators are off.
The following actuators (relay outputs) can be switched subject to system equipment level:
Display
Off All actuators have been switched off.
“Burner modulation”
Open Modulating burner.
“Burner modulation”
Neutral Modulating burner.
“Burner modulation”
Close Modulating burner.
“Output 20”
On Output 20 active.
“Output 52”
Open
“Output 52”
Neutral
“Output 52”
Close
“Output 29”
On Output 29 active.
“Compiled fault message”
On
“EA1 output 1”
On Contact “P - S” on plug aBJ of extension EA1 closed.
“AM1 output 1”
On Output active.
“AM1 output 2”
On Output active.
Note: During burner operation, the pumps connected
to the control unit are started.
46
Checking sensors
Service menu:
1. Press OK and
simultaneously for approx. 4 sec.
2. “Diagnosis”
3. Select group (see page 50).
4. Scan actual temperature of the relevant sensor.
5693 973 - 05
“All actuators”
Explanation
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Checking Actuators and Sensors at the Vitotronic 300-K
Carrying out a relay test
1.
Press OK and
2.
“Actuator test”
simultaneously for approx. 4 sec.
The following relay outputs can be controlled subject to the system equipment level:
Display
Explanation
“All actuators”
OFF
All actuators have been switched off.
“Output 20”
ON
Output 20 enabled.
“Output 52”
Open
-
“Output 52”
Neutral
-
“Output 52”
Closed
-
“DHW tank prim pump”
ON
Output for circulation pump for DHW tank heating enabled.
“DHW circ pump”
ON
Output for DHW recirculation pump enabled.
“Output 29”
ON
Output 29 enabled.
“Central fault mess.”
ON
-
“Htg circ pump HC2”
ON
Output heating circuit pump enabled (heating circuit with mixing valve M2).
“Mixing valve HC2”
Open
Output “Mixing valve open” enabled (heating circuit with mixing valve M2).
“Mixing valve HC2”
Closed
Output “Mixing valve closed” enabled (heating circuit with mixing valve M2).
“Htg circ pump HC3”
ON
Output heating circuit pump enabled (heating circuit with mixing valve M3).
“Mixing valve HC3”
Open
“Mixing valve open” enabled (heating circuit with mixing valve M3).
“Mixing valve HC3”
Closed
Output “Mixing valve open” enabled (heating circuit with mixing valve M3).
“EA1 output 1”
ON
Contact “P - S” on plug aBJ for extension EA1 closed.
“AM1 output 1”
ON
Output enabled.
“AM1 output 2”
ON
Output enabled.
“Solar circuit pump”
ON
Output for solar circuit pump sF at solar control module, type SM1, enabled.
“Solar circ pmp min”
ON
Output for solar circuit pump sF at solar control module, type SM1, switched
to minimum speed.
“Solar circ pmp max”
ON
Output for solar circuit pump sF at solar control module, type SM1, switched
to maximum speed.
“SM1 output 22”
ON
Output sS at solar control module, type SM1, enabled.
5693 973 - 05
Checking sensors
simultaneously for approx. 4 sec.
1.
Press OK and
2.
“Diagnosis”
3.
Select group (see overview on page 51).
4.
Scan actual temperature of the relevant sensor.
47
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Adjusting Heating Curves
Boiler water or supply
temperature
The heating curves illustrate the relationship between
the outside temperature and the boiler water or supply
temperature.
To put it simply: The lower the outside temperature,
the higher the boiler water or supply temperature.
The room temperature, again, depends on the boiler
water or the supply temperature.
Settings in the factory set condition:
H Slope = 1.4
H Shift = 0
Room
set-point
temperature
Outdoor temperature
Example of outside temperature 7° F (−14° C)
Legend
A Underfloor heating system, slope 0.2 to 0.8
B Low temperature heating system, slope 0.8 to 1.6
C Heating systems with a boiler water temperature in
excess of 167° F (75° C), slope greater than 1.6
Selecting the set room temperature
230 °F
(110 °C)
79 °F
(26 °C)
68 °F
(20 °C)
Individually adjustable for each heating circuit.
The heating curve is offset along the axis of the set room
temperature. When the heating circuit pump logic function
has been enabled, it modifies the starting and stopping
characteristics of the heating circuit pump.
Standard set room temperature
Changing the standard room temperature from 68 to 79° F
(20 to 26° C)
-4 °F
(-20 °C)
Operating instructions
48
5693 973 - 05
Legend
A Boiler water temperature or supply temperature
B Outside temperature
C Set room temperature
D Heating circuit pump OFF
E Heating circuit pump ON
Commissioning
Vitotronic 300, GW5B & MW1B Installation and Service
Adjusting Heating Curves
(continued)
Reduced set room temperature
Changing the reduced room temperature from 37 to 57° F
(3 to 14° C)
Operating instructions
Legend
A Boiler water temperature or supply temperature
B Outside temperature
C Set room temperature
D Heating circuit pump OFF
E Heating circuit pump ON
Changing the slope and shift
Individually adjustable for each heating circuit.
Boiler water or
supply temperature
Extended menu:
1.
Outside temperature
2.
“Heating”
3.
Select heating circuit.
4.
“Heating curve”
5.
“Slope” or “Shift”
6.
Select heating curve according to the system
requirements.
Example:
Heating curve setting with slope 1.5:
5693 973 - 05
Legend
A Changing the slope
B Changing the shift (vertical parallel offset of the
heating curve)
49
Service Scans, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Calling up the Service Menu
Service menu overview
Press OK and
simultaneously for approx. 4 sec.
Service
General
Diagnosis
Brief scan
Reset data
Actuator test
Coding level 1
Coding level 2
Fault history
Participant check
Service functions
Service PIN
Service reset
End service?
“Coding level 2” is only displayed if this level has
been enabled:
Press OK and
simultaneously for approx. 4 sec.
Exiting the Service Menu
1. Select “End service?”.
2. Select “Yes”.
3. Confirm with OK.
50
5693 973 - 05
Note: The system exits the service menu automatically
after 30 min.
Service Scans, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Calling up the Service Menu
Service menu overview
Press OK and
simultaneously for approx. 4 sec.
Service
General
Heating circuit 1 HC1
Heating circuit 2 HC2
Heating circuit 3 HC3
Diagnosis
Actuator test
DHW
Solar
Brief scan
Reset data
Coding level 1
Coding level 2
Fault history
Participant check
Service functions
Service PIN
Service reset
Terminate service?
“Coding level 2” is only displayed if this level has been
enabled:
Press OK and
simultaneously for approx. 4 sec.
Scanning Operating Data
Operating data can be scanned in six areas (see
“Diagnosis” in the overview “Service menu”).
Operating data on heating circuits with mixing valves and
solar can only be scanned if the components are installed
in the system.
For further information on operating data, see chapter
“Brief scan”.
Note: “- - -” appears on the display if a sensor that has
been scanned is faulty.
Calling up operating data
1.
Press OK and
simultaneously for approx. 4 sec.
2.
“Diagnosis”
3.
Select required group, e.g. “General”.
Resetting operating data
5693 973 - 05
Saved operating data (e.g. hours run) can be reset to 0.
The value “Adjusted outside temp” is reset to the actual
value.
1.
Press OK and
2.
“Diagnosis”
3.
“Reset data”
4.
Select required value or “All details”.
simultaneously for approx. 4 sec.
51
Service Scans, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Brief Scan
In the brief scan, you can scan temperatures, software
versions and connected components, for example.
1.
2.
3.
4.
Press OK and
simultaneously for approx. 4 sec.
“Diagnosis”
“Brief scan”.
Press OK. The display shows 9 lines with 6 fields each.
For an explanation of the relevant values in the individual lines, see the following table:
Line (brief scan)
Field
1
2
3
4
5
6
1:
System schemes 01 to 10
Control unit software version
Programming unit software
version
2:
2
0
0
Appliance identification
ZE-ID
3:
0
0
Number of KM BUS participants Software version
Solar control module
4:
0
0
0
0
0
0
5:
0
0
0
0
Software
version,
extension
AM1
Software
version,
extension
EA1
6:
0
0
0
0
0
0
7:
Subnet address/system number
Node address
0
0
8:
SNVT
config.
0: Auto
1: Tool
Software version
Neuron Chip
Number of LON participants
System circuit HC1
Heating circuit HC2
Heating circuit HC3
9:
0
0
0
0
0
0
10:
0
0
0
0
0
0
11:
0
0
Software
version,
extension
for heating
0
Software
version,
extension
for heating
0
Software
version
Communic.
coproc.
0
circuits
2
and 3 with
mixing valve
circuits
2
and 3 with
mixing valve
Note: The displays in fields 3 and 5 are the same.
Scanning and Resetting Service Display
52
Note: If a service display appears on the Vitotronic 300,
GW5B, the display will show “Participant fault” and
the participant number.
5693 973 - 05
No service interval can be set at the Vitotronic 300-K. In
other words, no service display is shown.
Troubleshooting, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Fault Codes
Displayed fault
code
0F
Cause
Measures
Control mode.
Service “0F” is only
displayed in the fault
history.
Service the appliance.
30
The burner is started and stopped via a
temperature controller.
Short circuit, boiler water
temperature sensor
38
The burner is started and stopped via a
temperature controller.
Lead break, boiler water
temperature sensor
60
Boiler with maximum temperature, no
output reduction, mixing valve return
temperature control “Open”.
Boiler with maximum temperature, no
output reduction, mixing valve return
temperature control “Open”.
Short circuit, temperature
sensor aJA
68
5693 973 - 05
System characteristics
70
Shunt pump constantly “ON”.
78
Shunt pump constantly “ON”.
A0
Boiler cools down.
A1
Boiler cools down.
A2
Boiler cools down.
A3
Boiler cools down.
AA
Control mode.
AC
Control mode.
Note: After the service, set
code “24:0” in group 2
“Boiler”.
Check the boiler water
temperature sensor
(see page 110).
Check the boiler water
temperature sensor
(see page 110).
Check temperature sensor
(see page 110).
Lead break, temperature
sensor aJA
Check temperature sensor
(see page 110).
Without temperature sensor:
Set code “4A:0” in group 1
“General”.
Short circuit, temperature Check temperature sensor
sensor aJB
(see page 110).
Lead break, temperature
Check temperature sensor
sensor aJB
(see page 110).
Without temperature sensor:
Set code “4B:0” in group 1
“General”.
Fault, safety equipment
Check safety equipment, and
at “X7” of plug-in adaptor reset if required.
2 for external safety
equipment
Fault, safety equipment
Check safety equipment, and
at “X3” of plug-in adaptor reset if required.
2 for external safety
equipment
Fault, safety equipment
Check safety equipment, and
at “X2” of plug-in adaptor reset if required.
2 for external safety
equipment
Fault, safety equipment
Check safety equipment, and
at “X1” of plug-in adaptor reset if required.
2 for external safety
equipment
Therm-Control
Insert plug aJA.
configuration fault:
For Vitocrossal, code “0D:
Plug aJA not plugged in. 0” in group 2 “Boiler” must be
selected.
Return temperature
Insert plug aJA and check
control configuration
codes.
error:
Code “0C:1” in group 2
“Boiler” has been set, but
plug aJA is not plugged
in and/or code “4E:0” in
group 1 “General” is not
set.
53
Troubleshooting, Vitotronic 300, GW5B
Displayed fault
code
AD
System characteristics Cause
Measures
Control mode.
B0
Control mode.
B1
Control mode.
B5
Control mode.
Isolation valve configuration error:
Code “0C:2”, “0C:
3” or “0C:4” in group 2 “Boiler”
is set and code “4E:1” in group 1
“General” is set.
Short circuit, flue gas temperature
sensor
Communication fault, programming
unit
Internal fault
B6
Control mode.
Invalid hardware recognized
B7
Boiler is regulated
by the temperature
controller.
Control mode.
Boiler coding card faulty
With isolation valve:
Set code “4E:0” in group 1
“General”.
Without isolation valve:
Set code “0C:1” in group 2 “Boiler”.
Check the flue gas temperature
sensor (see page 110).
Check connections and replace the
programming unit if required.
Check PCB and plug-in connections;
replace PCB if required.
Check coding address
“92” in group 1 “General”;
“92:161” must be set.
Plug in boiler coding card or replace.
B8
BF
54
(continued)
C1
Control mode.
No communication via
LON.
Boiler cools down.
C8
Boiler cools down.
C9
Boiler cools down.
CA
Boiler cools down
CB
Boiler cools down
CE
Control mode.
CF
D1
D2
Control mode.
No communication via
LON.
Boiler cools down
Control mode.
D4
Boiler cools down
Lead break, flue gas temperature
sensor
Incorrect LON communication
module
External safety equipment at plug
abÖ
Fault, low water
indicator at “X7” of plug-in adaptor 1
for external safety equipment
Fault, maximum pressure limiter at
“X3” of plug-in adaptor 1 for external
safety equipment
Fault, minimum or maximum pressure
limiter 2 at “X2” of plug-in adaptor 1
for external safety equipment
Additional high limit safety cut-out
fault
or
temperature limiter at “X1” of
plug-in adaptor 1 for external safety
equipment
Communication fault, plug-in adaptor
1 for external safety equipment
Check the flue gas temperature
sensor (see page 110).
Without flue gas temperature
sensor:
Set code “1F:0” in group 2 “Boiler”.
Replace LON communication
module.
Check connection and external
safety equipment.
Check the system water level; reset
low water indicator.
Check system pressure; reset
maximum pressure limiter.
Check system pressure, reset
minimum or maximum pressure
limiter 2.
Check system temperature; reset
high limit safety cut-out.
Check plug-in adaptor.
Without plug-in adaptor:
Set code “30:0” in group 1 “General”.
Check LON communication module
and replace if required.
Communication fault, LON
communication module of control
unit
Burner fault
Check the burner
Communication fault, plug-in adaptor Check plug-in adaptor.
2 for external safety equipment
Without plug-in adaptor:
Set code “31:0” in group 1 “General”.
The high limit safety cut-out has
Check the high limit safety cut-out or
responded or fuse F2 has blown
the burner, burner loop and fuse F2.
5693 973 - 05
Fault Codes
Vitotronic 300, GW5B & MW1B Installation and Service
Troubleshooting, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Fault Display
In the event of a fault, the red fault display flashes at the
control unit. “Fault” is displayed and flashes.
The fault code is displayed with OK.
Note: If a central fault message facility is connected, this
is started.
For an explanation of the fault code, see chapter “Fault
codes”.
For some faults, the type of fault is also displayed in plain
text.
Acknowledging faults
Follow the instructions on the display.
Note: The fault message is transferred to the menu.
A fault message facility, if connected, will be
switched off.
If an acknowledged fault is not remedied, the fault
message will be re-displayed the following day and
the fault message facility restarted.
Calling up acknowledged fault messages
Extended menu:
1.
2.
“Fault”
Calling up fault codes from the fault memory (fault
history)
5693 973 - 05
The 10 most recent faults (including those remedied) are
saved and can be called up.
Faults are sorted by date.
1.
Press OK and
2.
“Fault history”
3.
“Display?”
simultaneously for approx. 4 sec.
55
Troubleshooting, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Fault Codes
System characteristics
Cause
Measures
Short circuit, outside temperature
sensor
Lead break, outside temperature
sensor
Short circuit, common supply
temperature sensor
Check outside temperature
sensor (see page 110).
Check outside temperature
sensor (see page 110).
Check supply temperature sensor
(see page 110).
Lead break, common supply
temperature sensor
Check supply temperature sensor
(see page 110).
40
Activates at 32 °F (0° C)
outside temperature.
Activates at 32 °F (0° C)
outside temperature.
Stand-alone control unit without
supply temperature sensor (poss.
supply temperature not high
enough).
Stand-alone control unit without
supply temperature sensor (poss.
supply temperature not high
enough).
Mixing valve is closed.
Check supply temperature sensor
(see page 110).
44
Mixing valve is closed.
48
Mixing valve is closed.
4C
Mixing valve is closed.
50
DHW tank primary pump “ON”:
Set DHW temperature = set
supply temperature
Priority control is cancelled.
or
With primary store system:
DHW tank heating is started
and stopped by DHW tank
temperature sensor 2.
With primary store system:
DHW tank heating is started
and stopped by DHW tank
temperature sensor 1.
DHW tank primary pump “ON”:
Set DHW temperature = set
supply temperature
Priority control is cancelled.
or
With primary store system:
DHW tank heating is started
and stopped by DHW tank
temperature sensor 2.
With primary store system:
DHW tank heating is started
and stopped by DHW tank
temperature sensor 1.
Short circuit, supply temperature
sensor, heating circuit with mixing
valve M2 (heating circuit 2)
Short circuit, supply temperature
sensor, heating circuit with mixing
valve M3 (heating circuit 3)
Lead break, supply temperature
sensor, heating circuit with mixing
valve M2 (heating circuit 2)
Lead break, supply temperature
sensor, heating circuit with mixing
valve M3 (heating circuit 3)
Short circuit, DHW tank
temperature sensor 1
18
20
28
51
58
59
56
Short circuit, DHW tank
temperature sensor 2
Check supply temperature sensor
(see page 110).
Check supply temperature sensor
(see page 110).
Check supply temperature sensor
(see page 110).
Check the DHW tank
temperature sensor
(see page 110).
Check the DHW tank
temperature sensor
(see page 110).
Lead break, DHW tank temperature Check the DHW tank temperature
sensor 1
sensor (see page 110).
Lead break, DHW tank temperature Check the DHW tank
sensor 2
temperature sensor
(see page 110).
5693 973 - 05
Displayed
fault code
10
Vitotronic 300, GW5B & MW1B Installation and Service
Fault Codes
Displayed
fault code
60
(continued)
System characteristics
Cause
Measures
Boiler with maximum
temperature, no output
reduction, mixing valve return
temperature control “Open”.
Boiler with maximum
temperature, no output
reduction, mixing valve return
temperature control “Open”.
Short circuit, temperature sensor
aJA
Check temperature sensor
(see page 110).
Lead break, temperature sensor
aJA
Shunt pump constantly “ON”.
With primary store system:
3-way mixing valve “Closed”;
no DHW heating.
Shunt pump constantly “ON”.
With primary store system:
3-way mixing valve “Closed”;
no DHW heating.
Short circuit, temperature sensor
aJB
Check temperature sensor
(see page 110).
Without temperature sensor:
Set code “4A:0” in the
“General” group.
Check temperature sensor
(see page 110).
Lead break, temperature sensor
aJB
Check temperature sensor
(see page 110).
Without temperature sensor:
Set code “4b:0” in the
“General” group.
90
Control mode.
Short circuit, temperature sensor
/, connection to solar control
module.
Check temperature sensor /
(see separate installation and
service instructions).
91
Control mode.
Short circuit, temperature sensor
aÖ, connection to solar control
module.
92
No solar DHW heating.
93
Control mode
94
No solar DHW heating.
98
Control mode
99
Control mode
9A
No solar DHW heating.
68
70
78
5693 973 - 05
Troubleshooting, Vitotronic 300-K
Check temperature sensor aÖ
(see separate installation and
service instructions).
Short circuit, collector
Check sensor at the solar control
temperature sensor, connection
unit (see separate installation and
of temperature sensor & at solar service instructions).
control module or sensor at S1 of
the Vitosolic.
Short circuit, temperature sensor, Check sensor at the solar control
connection at S3 of the Vitosolic unit (see separate installation and
service instructions).
Short circuit, DHW tank
Check sensor at the solar control
temperature sensor, connection
unit (see separate installation and
of temperature sensor % at solar service instructions).
control module or sensor at S2 of
the Vitosolic.
Lead break, temperature sensor
Check temperature sensor /
/, connection to solar control
(see separate installation and
module.
service instructions).
Set coding address “20” in the
“Solar” group.
Lead break, temperature sensor
Check temperature sensor aÖ (see
aÖ, connection to solar control
separate installation and service
module.
instructions).
Set coding address “20” in the
“Solar” group.
Lead break, collector temperature Check sensor at the solar control
sensor, connection of temperature unit (see separate installation and
sensor & at solar control module service instructions).
or sensor at S1 of the Vitosolic.
57
Troubleshooting, Vitotronic 300-K
58
(continued)
Displayed
fault code
9B
System characteristics
Cause
Measures
Control mode.
Lead break, temperature sensor,
connection at S3 of the Vitosolic
9C
No solar DHW heating.
9E
Control mode.
Lead break, DHW tank temperature
sensor, connection of temperature
sensor % at solar control module or
sensor at S2 of the Vitosolic.
No flow rate in solar circuit or flow
rate too low, or temperature limiter
has responded.
Check sensor at the solar control unit
(see separate installation and service
instructions).
Check sensor at the solar control unit
(see separate installation and service
instructions).
9F
Control mode.
AB
Control mode, DHW
tank may be cold.
B1
Control mode.
B5
B6
Control mode.
Constant mode.
BA
Mixing valve “Closed”.
BC
Control mode without
remote control.
BD
Control mode without
remote control.
BE
Control mode without
remote control.
BF
Control mode.
No communication via
LON.
Solar control module or Vitosolic
faulty.
Displayed if a fault occurs at these
devices for which there is no fault
code in the Vitotronic.
Primary store system configuration
error:
Code “55:3” has been selected in the
“DHW” group, but plug aJB is not
plugged in and/or codes “4C:1” and
“4E:2” in the “General” group have
not been set.
Communication fault, programming
unit
Internal fault
Invalid hardware recognized
Communication fault, PCB, extension
for heating circuits 2 and 3 with
mixing valve
Communication fault, remote control
Vitotrol system circuit A1 (heating
circuit 1)
Check solar circuit.
Acknowledge fault message (see
separate installation and service
instructions).
Check solar control unit (see separate
installation and service instructions).
Insert plug aJB and check codes.
Check connections and replace the
programming unit if required.
Check PCB is plugged in correctly.
Check coding address
“92” in the “General” group; “92:187”
must be set.
Note: Code “8A:176” must be selected
so that coding address “92” is
displayed.
Check that the PCB and ribbon cable are
plugged in, and replace PCB if required.
Check connections, lead (see separate
installation and service instructions) and
coding address “A0” in the “Heating
circuit...” group.
Communication fault, remote control
Check connections, lead (see separate
Vitotrol, heating circuit with mixing
installation and service instructions) and
valve M2 (heating circuit 2)
coding address “A0” in the “Heating
circuit...” group.
Communication fault, remote control
Check connections, lead (see separate
Vitotrol with mixing valve M3 (heating installation and service instructions) and
circuit 3)
coding address “A0” in the “Heating
circuit...” group.
Incorrect LON communication module Replace LON communication module.
5693 973 - 05
Fault Codes
Vitotronic 300, GW5B & MW1B Installation and Service
Vitotronic 300, GW5B & MW1B Installation and Service
5693 973 - 05
Fault Codes
Troubleshooting, Vitotronic 300-K
(continued)
Displayed
fault code
C2
System
characteristics
Control mode.
Cause
Measures
Lead break, KM
BUS to solar control module or
Vitosolic
Communication fault, LON
communication module of
control unit
Check KM BUS cable and appliance.
Without solar control unit:
Set code “54:0” in the “General” group.
Check LON communication module and
replace if required.
CF
Control mode.
No communication
via LON.
D3
Control mode.
Communication fault extension EA1 Check connections (see page 88).
Without extension EA1:
Set code “5B:0” in the “General” group.
D5
Boiler ramps to the
electronic maximum
boiler water
temperature limit.
Boiler does not log in at the
cascade control unit
Check communication via participant check,
leads/ cables to the Vitotronic 300, GW5B
and codes.
D6
Control mode.
Input DE1 at extension EA1
reports a fault
Remove fault at appliance concerned.
D7
Control mode.
Input DE2 at extension
EA1 reports a fault
Remove fault at appliance concerned.
D8
Control mode.
Input DE3 at extension EA1
reports a fault
Remove fault at appliance concerned.
DA
Control mode without Short circuit, room temperature
room influence.
sensor, system circuit A1
(heating circuit 1)
Check the room temperature sensor
(see page 110).
DB
Control mode without Short circuit, room temperature
room influence.
sensor, heating circuit with mixing
valve M2 (heating circuit 2)
Check the room temperature sensor
(see page 110).
DC
Control mode without Short circuit, room temperature
room influence.
sensor, heating circuit with mixing
valve M3 (heating circuit 3)
Check the room temperature sensor
(see page 110).
DD
Control mode without Lead break, room temperature
room influence.
sensor, system circuit A1
(heating circuit 1)
Check room temperature sensor (see page
110) and adjustment of the remote control
(see separate installation and service
instructions).
DE
Control mode without Lead break, room temperature
room influence.
sensor, heating circuit with mixing
valve M2 (heating circuit 2)
Check room temperature sensor (see page
110) and adjustment of the remote control
(see separate installation and service
instructions).
DF
Control mode without Lead break, room temperature
room influence.
sensor, heating circuit with mixing
valve M3 (heating circuit 3)
Check room temperature sensor (see page
110) and adjustment of the remote control
(see separate installation and service
instructions).
59
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Boiler Temperature Control of the Vitotronic 300 GW5B
Brief description
H The boiler water temperature is regulated by starting
and stopping the burner or through modulation.
H The set boiler water temperature is specified by the
Vitotronic 300-K cascade control unit.
Functions
The boiler water temperature is captured by the following
equipment:
Upper control range limits
H High limit safety cut-out 210° F (99º C)
H Temperature controller TR 203/212/230° F
(95/100/110º C)
H Electronic maximum temperature limit:
– Setting range: 68 to 260° F (20 to 127º C)
– Changed via coding address “06” in the “Boiler”
group.
Lower control range limits
60
5693 973 - 05
H In standard mode and when frost protection is enabled,
the boiler water temperature will be regulated subject
to the respective boiler.
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Boiler Temperature Control of the Vitotronic 300, GW5B
(continued)
Burner
Switching hysteresis, burner
Permanent switching hysteresis
ON
Time
OFF
Heat demand-dependent switching hysteresis
The heat demand-dependent switching hysteresis takes
the boiler load into account.
The switching hysteresis, i.e the burner runtime varies
subject to actual heat demand.
set
low heat
demand
Burner
Code “04:0”
average heat
demand
high heat
demand
ERB50 function
ON
Time
OFF
Code “04:1”
Subject to heat demand, values between 6 and 12 K
result.
set
Burner
low heat
demand
average heat
demand
high heat
demand
ON
ERB80 function
Time
OFF
Code “04:2”
Subject to heat demand, values between 6 and 20 K
result.
Control sequence
Boiler goes cold
set
low heat
demand
average heat high heat
demand
demand
(set value −2 K)
The burner start signal is selected as the set boiler water
temperature minus 2 K, and the burner starts its own
monitoring program.
Note: The burner start may be delayed by a few minutes
subject to the number of auxiliary circuits and the
combustion type.
Boiler heats up
5693 973 - 05
(Set value +2 K)
The burner shuts down.
Modulating burner:
The burner stop point is determined by the stop
differential (coding address “13” in the “Boiler” group).
61
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Cascade Control of the Vitotronic 300-K
The supply temperature is regulated by starting or
stopping the burners or by starting/stopping individual
burner stages.
H Stand-alone control
H Sequential control
H Subject to the system version, we differentiate between
condensing strategy and two conventional strategies.
Set supply temperature
The set supply temperature is determined from the
following parameters:
H Without supply temperature sensor:
Set code “3B:0” or “3B:2” in the “Cascade” group.
To determine the start and stop criteria, the control
deviation is calculated from the set boiler water
temperature and the estimated average actual boiler
water temperature of the currently active boilers.
Only boilers with open isolation valves are taken into
consideration.
H Set supply temperature of system circuit A1 (heating
circuit 1) and heating circuits with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
Sequential control
H Set supply temperature of further consumers.
H Set code “3B:4” in the “Cascade” group.
H Set DHW temperature.
H The control strategy is set automatically to conventional
strategy 2, code “3C:2” (see page 64).
H External demands.
Upper control range limits:
Maximum limit of the system supply temperature
(coding address “37” in the “Cascade” group).
Lower control range limits:
Minimum limit of the system supply temperature
(coding address “36” in the “Cascade” group).
Cascading Layouts
Boilers connected in parallel
H Without and with supply temperature sensor.
H Set code “3B:0” or “3B:1” in the “Cascade” group.
H The cascade control specifies the set boiler water
temperature for all currently active boilers. Every boiler
control unit regulates to the specified set value.
The following control strategies are available:
H Condensing strategy
H Conventional strategy 1 (see page 64)
H Conventional strategy 2 (see page 64)
Boilers connected in series
H Without and with supply temperature sensor.
H Set code “3B:2” or “3B:3” in the “Cascade” group.
H The control strategy is set automatically to conventional
strategy 2, code “3C:2” (see page 64).
H The cascade control specifies the set boiler water
temperature for all currently active boilers. Every
boiler control unit regulates to the specified set value.
If the lead boiler (condensing boiler) does not achieve
the specified set value, it will only act to control
the return temperature of the conventional boiler
downstream. The conventional boiler is started late and
is also shut down late.
62
H With supplytemperature sensor:
Set code “3B:1” or “3B:3” in the “Cascade” group.
The control deviation is calculated from the set supply
temperature and the actual supply temperature to
determine the start and shutdown criteria.
H With supply temperature sensor.
H The cascade control unit regulates to the specified set
supply temperature by stipulating the output for each
individual boiler. The lead boiler can be operated in
modulating mode. All other boilers are operated in two
stages via a specified output (incl. modulating burners).
Control strategies
Condensing strategy
Benefit:
Optimum utilisation of the condensing effect and long
burner runtimes.
Set code “3C:0” in the “Cascade” group.
It is the aim of the condensing strategy to operate as
many boilers as possible at the lowest output level.
H Starting criterion:
Boilers are started via an output statement
(code “3D:1” in the “Cascade” group).
An additional boiler will start if the currently required
output can also be achieved by the currently active
boilers plus the next boiler in the boiler sequence (see
page 63).
H Shutdown criterion:
The boilers are shut down via a shutdown integral.
The shutdown criterion is met when the shutdown
integral exceeds a limit set via coding address “46” in
the “Cascade” group and the boiler started last will be
shut down.
5693 973 - 05
Brief description
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Cascade Control of the Vitotronic 300-K
Condensing strategy (code “3C:0” in the “Cascade”
group)
Example for the different control strategies
Two-boiler system with modulating burners:
H Boiler 1: 100% rated output (base load set to 33%)
H Boiler 2: 100% rated output (base load set to 33%)
Starting
5693 973 - 05
Boiler 2
t
Shutdown
Rated output in %
H Starting criterion:
The boilers are started via a starting integral. The next
boiler in the boiler sequence will be started if the value
set in coding address “45” in the “Cascade” group is
exceeded (see page 93).
H Shutdown criterion:
The boilers are shut down via a shutdown integral.
The shutdown criterion is met when the shutdown
integral exceeds a limit set via coding address “46” in
the “Cascade” group and the boiler started last will be
shut down.
Total
Benefit:
Long burner runtimes.
Code “3C:2” in the “Cascade” group (factory set
condition).
An additional boiler will only be started if the maximum
output of all currently active burners is insufficient to
achieve the set supply temperature.
A boiler will be shut down if the burners were returned to
their minimum output because of a large negative control
deviation and the output is still too high.
Boiler 1
Conventional strategy 2
Rated output in %
H Shutdown criterion:
Boilers are shut down via an output statement (code
“3D:1” in the “Cascade” group). A boiler is shut down
when the currently required output can be achieved
without the boiler that was started last.
Boiler 1
H Starting criterion:
The boilers are started via a starting integral. The next
boiler in the boiler sequence will be started if the value
set in coding address “45” in the “Cascade” group is
exceeded (see page 93).
Boiler 2
Benefit:
As few boilers as possible are active.
Set code “3C:1” in the “Cascade” group.
Conventional boilers are preferably operated at their upper
output range, to reliably prevent formation of condensate
due to low return temperatures. With this strategy, an
additional boiler will only be started if the maximum
output of all currently active burners is insufficient to
achieve the set supply temperature. A boiler will be shut
down when the remaining boilers can achieve the required
output on their own.
Total
Conventional strategy 1
(continued)
63
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Cascade Control of the Vitotronic 300-K
(continued)
Conventional strategy 2 (code “3C:2” in the “Cascade”
group)
Starting
Starting
5693 973 - 05
Shutdown
Boiler 1
Boiler 1
Rated output in %
Total
Boiler 2
Rated output in %
Total
Boiler 2
Shutdown
64
Rated output in %
Total
Boiler 2
Rated output in %
Total
Boiler 2
Boiler 1
Boiler 1
Conventional strategy 1 (code “3C:1” in the “Cascade”
group)
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Heating Circuit Control Unit of the Vitotronic 300-K
Brief description
Outside temperature
H The control unit has control circuits for one system
circuit A1 (heating circuit 1) and two heating circuits
with mixing valve M2 (heating circuit 2) and M3
(heating circuit 3).
A heating curve must be set for matching the control unit
to the building and the heating system.
The heating curve characteristics determine the set boiler
water temperature subject to outside temperature. An
average outside temperature is used for control purposes.
This comprises the actual and the adjusted outside
temperature.
H The set supply temperature of every heating circuit is
determined from the following parameters:
– Outside temperature
– Set room temperature
– Operating mode
– Heating curve slope and shift
H The supply temperature of the system circuit
corresponds to the common system supply temperature.
H The supply temperature of the heating circuits with
mixing valve is regulated by the gradual opening or
closing of the mixing valves. The mixing valve motor
control changes the actuating and pause times subject
to the control differential (control deviation).
Functions
The system circuit is subject to the boiler water
temperature and its control range limits.
The heating circuit pump is the only actuator.
The supply temperature of the heating circuits with
mixing valve is recorded by the supply temperature sensor
of the relevant heating circuit.
H Upper control limit: Electronic maximum supply
temperature limit Coding address “C6” in the “Heating
circuit...” group.
H Lower control range limit: Electronic minimum supply
temperature limit Coding address “C5” in the “Heating
circuit...” group.
Time program
5693 973 - 05
In accordance with the time program in the “Heating
and DHW” heating program, the control unit regulates
between “Central heating at standard room temperature”
and “Central heating at reduced room temperature”.
Every operating mode has its own set level.
4 time phases per day can be selected.
Room temperature
In conjunction with the remote control and room
temperature hook-up (coding address “B0” in the
“Heating circuit...” group):
Compared with the outside temperature, the room
temperature has a greater influence on the set boiler
water temperature (changed via coding address “B2” in
the “Heating circuit...” group).
In conjunction with heating circuits with mixing valve:
For control differentials (actual value deviation) above
2 K room temperature, the influence can be increased
again (coding address “B6” in the “Heating circuit...”
group):
H Quick heat-up
The set room temperature must be raised by at least
2 K by the following measures:
– Enabling party mode
– Changing from central heating with reduced
temperature to central heating with standard
temperature
– Start optimization (coding address “B7” in the
“Heating circuit...” group)
Quick heat-up will stop when the set room temperature
has been reached.
H Quick setback
The set room temperature must be reduced by at least
2 K by the following measures:
– Enabling economy mode
– Changing from central heating with standard
temperature to central heating with reduced
temperature
– Stop optimization (coding address “C1” in the
“Heating circuit...” group)
Quick setback will stop when the set room temperature
has been reached.
65
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Heating Circuit Control Unit of the Vitotronic 300-K
(continued)
DHW temperature
System dynamics
Priority control
You can influence the control characteristics of the mixing
valves via coding address “C4” in the “Heating circuit...”
group.
H With priority control: (code “A2:2” in the “Heating
circuit...” group):
The set supply temperature is set to 32° F (0° C)
during DHW tank heating. The mixing valve closes and
the heating circuit pump is switched off.
H Without priority control: The heating circuit control unit
continues to operate with the same set value.
Heating circuit pump logic (economy mode)
The heating circuit pump is switched off [set supply
temperature set to 32° F (0° C)] if the outside
temperature exceeds the value selected via coding
address “A5” in the “Heating circuit...” group.
Extended economy mode
The heating circuit pump is switched off [set supply
temperature set to 32° F (0° C)] if one of the following
criteria is met:
H The adjusted outside temperature exceeds the value
selected via coding address “A6” in the “Heating
circuit...” group.
Central control
Central control for a heating circuit can be programmed
via coding address “7A” in the “General” group.
The heating and holiday program then applies to all
additional heating circuits of the system.
For these heating circuits, when the heating and holiday
program is enabled, “Central control” is displayed. Any
holiday programs that may have been set will be deleted.
Party and economy modes cannot be enabled on all
control units.
Frost protection
The supply temperature is maintained in accordance with
the heating curve for the reduced set room temperature,
but at min. 50° F (10° C).
A variable frost limit can be set in accordance with coding
address “A3” in the “Heating circuit...” group.
H The heating circuit pump can be switched off for a time
calculated by the control unit when changing over from
heating mode to reduced mode.
Requirement:
– There is no risk of frost.
– Coding address “B0” in the “Heating circuit...” group
must be set to 0.
The idle period can be individually adjusted via coding
address “A9” in the “Heating circuit...” group.
Note: If, during the pump idle period, the system is
switched over to heating mode or the set room
temperature is increased, the heating circuit pump
is switched on, even if the period has not yet
expired.
H The actual room temperature exceeds the value
selected via coding address “B5” in the “Heating
circuit...” group.
66
5693 973 - 05
H The mixing valve has been closed for 12 min. (mixing
valve economy function, coding address “A7” in the
“Heating circuit...” group).
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Heating Circuit Control Unit of the Vitotronic 300-K
(continued)
Supply temperature control
Supply temperature
Differential temperature:
The differential temperature is adjustable via coding
address “9F” in the “General” group, factory set condition
8 K.
The differential temperature is the value by which the
common supply temperature should be higher than the
highest currently required supply temperature of the
heating circuit with mixing valve.
H System with only one heating circuit with mixing valve:
The common set supply temperature is regulated
automatically to 8 K above the set supply temperature
of the heating circuit with mixing valve.
Outside temperature
Legend
A Maximum supply temperature limit (coding address
“37” in the “Cascade” group)
B Slope = 1.8 for system circuit
C Slope = 1.2 for heating circuit with mixing valve
D Common supply temperature (at a differential
temperature = 8 K)
E Lower common supply temperature
H System with system circuit and heating circuits with
mixing valve:
The common set supply temperature operates in
accordance with its own heating curve. The differential
temperature of 8 K towards the set supply temperature
of the heating circuits with mixing valve is set at the
factory.
Raising the reduced room temperature
During operation with reduced room temperature, the
reduced set room temperature can be automatically raised
subject to the outside temperature. The temperature is
raised in accordance with the selected heating curve, but
no higher than the set standard room temperature.
The outside temperature limits for the start and end of the
temperature raising can be adjusted via coding addresses
“F8” and “F9” in the “Heating circuit...” group.
Example using the settings in the factory set condition
Boiler water or
Supply temperature
Reducing the heat-up time
Se
t ro
om
During the transition from operation with reduced room
temperature to operation with standard room temperature,
the boiler water or supply temperature will be raised in
accordance with the selected heating curve. The boiler
water or supply temperature increase can be automatically
raised.
The value and duration of the additional increase of the
set boiler water or supply temperature can be adjusted in
coding addresses “FA” and “FB” in the “Heating circuit...”
group.
tem
pe
rat
ure
Outside temp.
5693 973 - 05
Legend
A Heating curve for operation with standard room
temperature
B Heating curve for operation with reduced room
temperature
67
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
Heating Circuit Control Unit of the Vitotronic 300-K
Example using the settings in the factory set condition
(continued)
Control sequence
Mixing valve circuit
Set boiler water or flow temperature
The mixing valve motor will not be controlled within the
“neutral zone” (±1 K).
Supply temperature drops
(Set value −1 K)
The mixing valve motor receives the signal “Mixing valve
open”. The signal duration lengthens with an increasing
control differential.
The duration of pauses reduces with an increasing control
differential.
Supply temperature rises
Time in h
(Set value +1 K)
The mixing valve motor receives the signal “Mixing valve
closed”. The signal duration lengthens with an increasing
control differential.
The duration of pauses reduces with an increasing control
differential.
68
5693 973 - 05
Legend
A Start of operation with standard room temperature
B Set boiler water or supply temperature in accordance
with the selected heating curve
C Set boiler water or supply temperature in accordance
with coding address “FA”:
122° F + 20% = 146° F
(50° C + 20% = 60° C)
D Duration of operation with raised set boiler water or
supply temperature in accordance with coding address
“FB”: 60 min.
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
DHW Tank Temperature Control of the Vitotronic 300-K
Brief description
Frost protection
H The DHW tank temperature control is a constant
temperature control. This is the result of starting and
stopping the circulation pump for DHW tank heating.
The switching differential is ±2.5 K.
The DHW tank will be heated to 68° F (20° C) if the
DHW temperature sinks below 41° F (5° C).
H When the DHW tank is heated, a set supply
temperature is specified that is 20 K higher than the set
DHW temperature (adjustable via coding address “60”
in the “DHW” group).
This function is activated by providing a second set DHW
temperature via coding address “58” in group “DHW”
and activating the fourth DHW phase for DHW heating.
Functions
Time program
An automatic or an individual time program may be
selected for DHW heating and the DHW recirculation
pump.
Compared with the heating circuit heatup phase, DHW
heating starts 30 min. earlier in automatic mode.
The individual time program enables up to 4 time
phases per day to be set for DHW heating and the DHW
recirculation pump for every day of the week.
All DHW tank heating sequences will be completed
independently of the time program.
In conjunction with coding address “7F” in the “General”
group
H Detached house Code
“7F:1”:
– Automatic mode
The heating times for heating circuit 1 are applied to
systems with two or three heating circuits.
– Individual time program
The time phases for DHW heating and the DHW
recirculation pump have the same effect on all heating
circuits.
H Apartment building
Code “7F:0”:
– Automatic mode
For systems with two or three heating circuits, the
heating times for the relevant heating circuit will be
applied.
– Individual time program
The time phases for DHW heating and the DHW
recirculation pump can be adjusted individually for
each heating circuit.
Auxiliary function for DHW heating
Set DHW temperature
The set DHW temperature can be adjusted between 50
and 140° F (10 and 60° C).
The set value range can be extended to 203° F (95 ºC)
via coding address “56” in the “DHW” group.
The set default value of the programming unit and/or the
Vitotrol 300A remote control units can be allocated via
coding address “66” in the “DHW” group.
DHW recirculation pump
This delivers hot water to the draw-off points at
adjustable times.
Four time phases can be selected at the control unit for
every day.
Auxiliary circuits
DHW heating in conjunction with the heating circuits
can be disabled or enabled by changing over the heating
program (see coding address “D5” in the “Heating circuit
...” group).
System with primary store system
The above functions also apply in conjunction with
primary store systems.
Set the following codes:
“55:3” in the “DHW” group; “4C:1”, “4E”:
2 in the “General” group.
System with solar control unit
A third set DHW temperature can be specified via coding
address “67” in the “DHW” group.
The DHW tank is only reheated by the boiler if the
temperature falls below this value.
Priority control
H With priority control: (code “A2:2” in the “Heating
circuit...” group):
The set supply temperature is set to 32° F (0° C)
during DHW tank heating. The mixing valve closes
and the heating circuit pump is switched off.
5693 973 - 05
H Without priority control:
The heating circuit control unit continues to operate
with the same set value.
69
Function Description
Vitotronic 300, GW5B & MW1B Installation and Service
DHW Tank Temperature Control of the Vitotronic 300-K (continued)
Control sequence
Code “55:0” in the “DHW” group, DHW tank heating
The DHW tank goes cold (set value −2.5 K, adjustable
via coding address “59”):
H The common set supply temperature is set 20 K higher
than the set DHW temperature (adjustable via coding
address “60”).
The DHW tank is hot (set value +2.5 K):
Code “55:2” in the “DHW” group, DHW tank temperature
control with 2 DHW tank temperature sensors
DHW tank temperature sensor 1 enables the circulation
pump for DHW tank heating and is evaluated for stop
conditions during the pump run-on time.
DHW tank temperature sensor 2:
The DHW tank heating will be switched on early if a lot
of hot water is drawn off. The DHW tank heating will be
switched off early if no hot water is drawn off.
H The common set supply temperature is returned to the
set weather-compensated value.
DHW tank goes cold:
H Pump run-on:
The circulation pump runs on after DHW tank heating
until one of the following criteria is met:
– The set DHW temperature is exceeded by 5 K.
– The set max. run-on time is reached (coding address
“62”).
H Actual DHW temperature at sensor 2 < set DHW
temperature x factor for start time (adjustment via
coding address “69”)
H Without pump run-on (code “62:0”).
Code “55:1” in the “DHW” group, adaptive DHW tank
heating
With adaptive DHW tank heating, the speed of the
temperature rise during DHW heating is taken into
account.
The DHW tank goes cold (set value −2.5 K, adjustable
via coding address “59”):
H The common set supply temperature is set 20 K higher
than the set DHW temperature (adjustable via coding
address “60”).
The DHW tank is hot:
H The control unit checks whether the boiler will
be required to supply heat after the DHW tank
has been heated up or whether residual boiler
heat should be transferred to the DHW tank.
Accordingly, the control unit determines the burner and
circulation pump stop times to prevent the set DHW
temperature being substantially exceeded after the
DHW tank has been heated up.
H Set value −2.5 K, adjustable via coding address “59”
or
The DHW tank is hot:
H Set value +2.5 K
and
H Actual DHW temperature at sensor 2 > set DHW
temperature x factor for stop time (adjustment via
coding address “68”)
Code “55:3” in the “DHW” group, DHW tank temperature
control, primary store system
The DHW tank goes cold (set value −2.5 K, adjustable
via coding address “59”):
H The common set supply temperature is set 20 K higher
than the set DHW temperature (change via coding
address “60”).
H The primary pump in the primary store system starts.
H The 3-way mixing valve opens and then regulates to
the specified set value.
H The circulation pump for DHW tank heating cycles
(briefly switches on and off) until the set supply
temperature has been reached (set DHW temperature
+ 5 K). Then it runs constantly. If, during heating, the
actual value falls below the required set temperature,
the circulation pump for DHW tank heating will
temporarily cycle again.
The DHW tank is hot:
H DHW tank temperature sensor 1:
Actual value ≥ set value
and
DHW tank temperature sensor 2:
Actual value > set value −1.5 K:
H The circulation pump for DHW tank heating stops
immediately when the 3-way mixing valve is fully
opened.
or
H The circulation pump for DHW tank heating stops after
expiry of the run-on time that is selected via code “62”.
70
5693 973 - 05
H The common set supply temperature is returned to the
set weather-compensated value.
Coding 1, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Calling up Coding Level 1
Prior to coding the Vitotronic 300 GW5B, ensure the
boiler is in cascade mode. Refer to page 25.
For the Vitotronic 300 GW5B, see boiler
Service Instructions
1.
2.
3.
3.
4.
5.
6.
and OK for approximately 4 seconds.
Press
to scroll to serviceand select with OK.
Use
to scroll to service functionsand select
Use
with OK.
to scroll to multi-boiler systemand select
Use
with OK.
to select ‘yes’.
Use
Allow control to restart.
Upon restart, use
to select ‘language’.
Note: Codes are displayed as plain text.
Codes that have no function due to the heating
system equipment level or the setting of other
codes are not displayed.
for approximately 4 seconds.
1. Press OK and
2. “Coding level 1”
3. Select group of required coding address:
- “General”
- “Boiler”
- “All codes std. device”
In this group, all coding addresses from coding level 1
4. Select coding address.
5. Select value according to the following tables and
confirm with OK.
6. If you want to reset all codes to their factory setting:
Select “Standard setting” in “Coding level 1”.
Note: This also resets codes from coding level 2.
5693 973 - 05
Group 1 “General”
Coding
Coding in the factory set condition
System design
00:0
Set automatically if code “01:2” is set.
Boiler control unit is linked into the
cascade.
Servomotor runtime
40:...
Runtime, isolation valve servomotor at
plug gSA1.
Factory set condition specified by boiler
coding card.
Participant no.
77:1
LON participant number. If this address
does not appear, power down the
control and install the LON card and
restart.
8F:0
Operation in the standard menu and
extended menu enabled.
Note: The respective code is only
activated when you exit the service
menu(see page 37).
Possible change
00:1
No function.
40:5
to
40:199
Runtime adjustable from 5 to 199 sec.
77:1
to
77:99
LON participant number,
adjustable from 1 to 99.
8F:1
Operation in standard menu and
extended menu blocked.
Operation enabled in the standard menu
and blocked in the extended menu.
8F:2
71
Coding 1, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Group 2 “Boiler”
Coding
Coding in the factory set condition
Possible change
System design
01:2
Multi boiler system with cascade control
via LON.
01:1
Single boiler system.
01:3
Do not adjust.
Boiler
07:1
Consecutive boiler number in multi boiler 07:2
system.
to
07:4
Consecutive boiler number in multi
boiler system.
Flue gas monitor
1F:0
With flue gas temperature sensor:
Flue gas temperature is not monitored
for service display.
1F: 34 (1)
to
1F: 482° F
(250° C)
When the limit for the flue gas
temperature is exceeded,
is
displayed.
21:1
to
21:100
The number of hours run before the
burner should be serviced is adjustable
from 100 to 10,000 h;
1 step 100 h
Burner service in 100 hour
21:0
No service interval (hours run) selected.
Service interval in months
23:0
No interval for service.
to
23:24
Interval adjustable from 1 to 24
months.
Service status
72
No
display.
24:1
display (the address is automatically
set and must be manually reset after a
service has been carried out).
5693 973 - 05
24:0
Coding 2, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Calling up Coding Level 2
Note: At coding level 2, all codes are accessible,
including the codes at coding level 1.
5693 973 - 05
Codes that have not been assigned due to the
heating system equipment level or the setting of
other codes are not displayed.
simultaneously for approximately
1.
Press OK and
4 seconds.
2.
Press OK and
4 seconds.
3.
“Coding level 2”
4.
Select group of required coding address:
- “General”
- “Boiler”
5.
Select coding address.
6.
Select value according to the following tables and
confirm with “OK”.
7.
If you want to reset all codes to their factory setting:
Select “Standard setting” in “Coding level 2”.
Note: This also resets codes at coding level 1.
simultaneously for approximately
73
Coding 2, Vitotronic 300, GW5B
Group 1 “General”
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
Coding
Coding in the factory set condition
Possible change
00:0
Set automatically if code “01:2” is set.
Boiler control unit is linked into the
cascade.
00:1
No function.
30:0
Without plug-in adaptor 1, external
safety equipment.
30:1
With plug-in adaptor 1, external safety
equipment; automatic recognition.
31:0
Without plug-in adaptor 2, external
safety equipment.
31:1
With plug-in adaptor 2, external safety
equipment; automatic recognition.
32:0
Without extension AM1.
32:1
With extension AM1; automatic
recognition.
33:1
Function output A1 at extension AM1:
Heating circuit pump.
33:3
Circulation pump for neutralizing system or
flue gas/ water heat exchanger.
34:0
Function output A2 at extension AM1:
DHW recirculation pump.
34:3
Circulation pump for neutralizing system or
flue gas/ water heat exchanger.
40:...
Runtime, isolation valve servomotor at
plug gSA1.
Factory set condition specified by boiler
coding card.
40:5
to
40:199
Runtime adjustable from 5 to 199 sec.
4A:0
Sensor aJA not available.
4A:1
Sensor aJA available (e.g. ThermControl temperature sensor); automatic
recognition.
4B:0
Sensor aJB not available.
4B:1
Sensor aJB available (e.g. return
temperature sensor T2); automatic
recognition.
4C:2
Connection at plug sÖ:
Switching contact,
Therm-Control.
4C:1
Do not adjust.
4C:3
Circulation pump – flue gas/water heat
exchanger.
Connection at plug sL:
Shunt pump.
4D:2
Boiler circuit pump.
4D:3
Boiler circuit pump with isolation valve
function.
Connection at plug gS:
Motor for isolation valve.
4E:1
Motor for 3-way mixing valve for return
temperature control.
4E:2
Do not adjust.
4E:0
4F:5
74
Run-on time, shunt or boiler circuit pump 4F:0
5 min.
4F:1
to
4F:60
No pump run-on.
Run-on time adjustable from 1 to 60 min.
5693 973 - 05
4D:1
Coding 2, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Group 1 “General”
(continued)
Coding
Coding in the factory set condition
Do Not Adjust
--
--
54:0
Do Not Adjust
--
--
5B:0
Without extension EA1.
5B:1
With extension EA1; automatic recognition.
Function, output aBJ at extension EA1:
Central fault message.
5C:1
No function.
5C:2
No function.
5C:3
No function.
5C:4
No function.
5C:5
No function.
5D:1
No function.
5D:2
No function.
5D:3
External blocking.
5D:4
External blocking with fault message.
5D:5
Fault message input.
5D:6
No function.
5E:1
No function.
5E:2
No function.
5E:3
External blocking.
5E:4
External blocking with fault message.
5E:5
Fault message input.
5E:6
No function.
5C:0
5D:0
5E:0
5693 973 - 05
Possible change
52:0
Function input DE1 at extension EA1:
No function.
Function input DE2 at extension EA1:
No function.
75
Coding 2, Vitotronic 300, GW5B
76
(continued)
Coding in the factory set condition
Possible change
5F:0
5F:1
No function.
5F:2
No function.
5F:3
External blocking.
5F:4
External blocking with fault
message.
5F:5
Fault message input.
5F:6
No function.
Function input DE3 at extension EA1:
No function.
6C:0
No run-on time neutralizing system.
6C:1
to
6C:255
Run-on time neutralizing system at
output A1 at extension AM1, adjustable
from 1 to 255 sec.
6D:0
No run-on time neutralizing system.
6D:1
to
6D:255
Run-on time neutralizing system at
output A2 at extension AM1, adjustable
from 1 to 255 sec.
76:0
Without LON communication module.
76:1
With LON communication module;
automatic recognition.
77:1
LON participant number.
77:1
to
77:99
LON participant number, adjustable from
1 to 99.
78:1
LON communication enabled.
78:0
LON communication disabled.
79:0
Control unit is not fault manager.
79:1
Control unit is fault manager.
5693 973 - 05
Group 1 “General”
Vitotronic 300, GW5B & MW1B Installation and Service
Coding 2, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Group 1 “General”
Coding in the factory set condition
Possible change
80:6
If a fault occurs for at least
30 sec., a fault message is displayed.
88:0
Immediate fault message.
80:2
to
80:199
The minimum fault duration until a fault
message is issued is adjustable from
10 to 995 sec;
1 step 5 sec.
88:0
Temperature displayed in °C (Celsius).
88:1
Temperature displayed in °F
(Fahrenheit).
8A:175
Do Not Adjust.
--
--
8B:0
Do Not Adjust.
--
--
8F:0
Operation in the standard menu and
extended menu enabled.
Note: The respective code is only
activated when you exit the service
menu (see page 50).
8F:1
Operation in standard menu and
extended menu blocked.
8F:2
Operation enabled in the standard menu
and blocked in the extended menu.
93:0
Fault messages during emissions test
function/service display do not affect
central fault messages.
93:1
Fault messages during emissions test
function/ service display affect central
fault messages.
95:0
Do Not Adjust.
95:1
98:1
Viessmann system number (in
conjunction with monitoring several
systems via Vitocom 300).
98:1
to
98:5
9B:0
Do not adjust.
9C:20
Monitoring LON participants:
If there is no response from a
participant, values specified by the
control unit are used after 20 min
and a fault message is issued
9D:0
5693 973 - 05
(continued)
Do not adjust.
-System number adjustable from 1 to 5.
--
--
9C:0
No monitoring
9C:5
to
9C:60
Time adjustable from 5 to 60 min.
--
--
77
Coding 2, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Coding in the factory set condition
Possible change
01:2
Multi boiler system with cascade control via
LON.
01:1
Single boiler system.
01:3
Do not adjust.
07:1
Consecutive boiler number in multi boiler
system.
07:2
to
07:4
Consecutive boiler number in multi boiler
system.
0C:5
Modulating isolation valve, independent of
the set boiler water temperature.
0C:0
No function.
0C:1
Constant return temperature control.
0C:2
Time-controlled isolation valve.
0C:3
Isolation valve switching, subject to the set
boiler water temperature.
0C:4
Modulating isolation valve, subject to the set
boiler water temperature.
With Therm-Control,
affects the isolation valve (function disabled
with code “0C:1”).
0D:0
Without Therm-Control.
0D:1
With Therm-Control, affects the mixing
valves of downstream heating circuits.
1F:0
With flue gas temperature sensor:
Flue gas temperature is not monitored for
service display.
1F: 34 (1)
to
1F: 482°F
(250°C)
When the flue gas temperature limit is
exceeded,
is displayed.
21:0
No service interval (hours run) selected.
21:1
to
21:100
The number of hours run before the burner
should be serviced is adjustable from 100 to
10,000 h.
1 step 100 h.
23:0
No interval for service.
23:1
to
23:24
Interval adjustable from 1 to 24 months.
24:0
No
24:1
display (the address is automatically set
and must be manually reset after a service
has been carried out).
2B:5
Maximum preheating time of the isolation
valve
5 min.
2B:0
No preheating time.
2B:1
to
2B:60
Preheating adjustable from 1 to 60 min.
Maximum run-on time of the isolation valve
5 min.
2C:0
No run-on time.
2C:1
to
2C:60
Run-on time adjustable from 1 to 60 min.
Shunt pump control function only “ON” if
the boiler is enabled.
2D:1
Shunt pump control function permanently
“ON”.
0D:2
2C:5
2D:0
78
display.
5693 973 - 05
Group 2 “Boiler” (continued)
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Calling up Coding Level 1
Note:
H The codes are displayed as plain text.
H Codes that have no function due to the heating system
equipment level or the setting of other codes are not
displayed.
5693 973 - 05
H Heating systems with one system circuit and one
or two heating circuits with mixing valve: In the
following, the system circuit is designated “Heating
circuit 1” and the heating circuits with mixing
valve as “Heating circuit 2” or “Heating circuit 3”.
If the heating circuits were given individual
designations, the selected designation and “HC1”,
“HC2” or “HC3” appear instead.
1.
Press OK and
simultaneously for approx. 4 sec.
2.
“Coding level 1”
3.
Select group of required coding address:
H “General”
H “Cascade”
H “DHW”
H “Solar”
H “Heating circuit 1/2/3”
H “All codes std device”
In this group, all coding addresses from coding
level 1 (except the coding addresses from the
“Solar” group) are displayed in ascending order.
4.
Select coding address.
5.
Select value according to the following tables and
confirm with OK.
6.
If you want to reset all codes to their factory set
condition:
Select “Standard setting” in “Coding level 1”.
Note: This also resets codes from coding level 2.
79
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“General” Group
Coding
Coding in the factory set condition
System design
00:1
One system circuit A1 (heating circuit
1), without DHW heating
6
7
8
9
10
For system schemes, see the following
table.
Description
One system circuit A1 (heating circuit 1) with DHW heating (automatic recognition)
One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating
One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating
One system circuit A1 (heating circuit 1) One heating circuit
with mixing valve M2 (heating circuit 2) without DHW heating (automatic recognition)
One system circuit A1 (heating circuit 1) One heating circuit
with mixing valve M2 (heating circuit 2) with DHW heating (automatic recognition)
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
without DHW heating
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
with DHW heating
One system circuit A1 (heating circuit 1)
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
without DHW heating (automatic recognition).
One system circuit A1 (heating circuit 1)
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
with DHW heating (automatic recognition).
Coding in the factory set condition
Servomotor runtime
40:125
3-way mixing valve servomotor runtime
in conjunction with permanent return
temperature control at plug gSA1 125 s.
Participant no.
77:5
LON participant number.
Possible change
40:5
to
40:199
Runtime adjustable from 5 to 199 sec.
77:1
to
77:99
LON participant number, adjustable from
1 to 99:
1 - 4 = Boiler control unit
5 = Cascade control unit
10 - 98 = Vitotronic 200-H
99 = Vitocom
Detached house/apartment building
7F:1
Detached house.
7F:0
Apartment building.
Separate adjustment of holiday program
and time program for DHW heating
possible.
General
8F:0
8F:1
Operation in the standard menu and
extended menu blocked.
Operation enabled in the standard menu;
blocked in the extended menu.
Operation in the standard menu and
extended menu enabled.
Note: The relevant code is only enabled
when you exit the service level
(see page 51)
Set supply temperature for external demand
9B:70
Set supply temperature for external
demand 158° F (70° C).
80
00:2
to
00:10
8F:2
9B:0
9B:1
to
9B:127
No default set value.
Set supply temperature adjustable from
34 to 260° F (1 to 127° C).
5693 973 - 05
Value address
00: ...
2
3
4
5
Possible change
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Cascade” Group
Coding
Coding in the factory set condition
Possible change
Number of boilers in cascade
35:4
4 boilers connected to the Vitotronic
300-K.
35:1
to
35:4
1 to 4 boilers connected to the
Vitotronic 300-K.
36:1
to
36:127
Minimum limit adjustable from 32 to
260° F (0 to 127° C).
37:20
to
37:127
Maximum limit adjustable from 68 to
260° F (20 to 127° C).
3B:0
Stand-alone parallel boiler circuit without
supply temperature sensor (see page 62).
3B:2
Stand-alone serial boiler circuit without
supply temperature sensor (see page 62).
3B:3
Stand-alone serial boiler circuit with supply
temperature sensor (see page 62).
3B:4
Sequential control with supply
temperature sensor (see page 62).
3C:0
Condensing strategy (see page 63).
3C:1
Conventional strategy 1 (see page 64).
Min. system supply temperature
36:0
Electronic minimum system supply
temperature limit set to 32° F (0° C).
Max. system supply temperature
37:80
Electronic maximum system supply
temperature limit set to 176° F (80° C).
Note: Value must not be higher than the
lowest value of coding address
“06” in the “Boiler” group of
every Vitotronic 300, GW5B.
Control type
3B:1
Stand-alone parallel boiler circuit with
supply temperature sensor
(see page 62).
Control strategy
3C:2
Conventional strategy 2 (see page 64).
“DHW” Group
Coding
Coding in the factory set condition
Possible change
DHW
67:40
For solar DHW heating:
Set DHW temperature 104° F (40° C).
Reheating is suppressed above the selected
set temperature (DHW heating by the boiler
only if solar energy is not sufficient).
67:0
No third set value.
67:10
to
67:95
Set DHW temperature adjustable from 50
to 203° F (10 to 95° C) (limited by boiler
specific parameters).
Observe the setting of coding address “56”.
73:1
to
73:6
“ON” from once per hour for 5 min up to
6 times per hour for 5 min. during the time
program.
73:7
Constantly “ON”.
Enable DHW recirculation pump
5693 973 - 05
73:0
DHW recirculation pump:
“ON” according to time program.
81
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Solar” Group
Only in conjunction with solar control module, type SM1.
Coding
Coding in the factory set condition
Possible change
Speed control solar circuit pump
02:0
Solar circuit pump (multi stage) without
speed control by solar control module SM1.
02:1
Solar circuit pump (multi stage) is speedcontrolled with wave pack control.
02:2
Solar circuit pump is speed-controlled with
PWM control.
08:10
to
08:90
The maximum DHW tank temperature is
adjustable from 50 to 194° F (10 to 90° C).
0A:0
Stagnation time reduction is disabled.
0A:1
to
0A:40
Value for stagnation time reduction is
adjustable from 1 to 40 K.
0F:1
to
0F:255
Flow rate adjustable from 0.1 to 25.5 l/min;
1 step 0.1 l/min.
20:1
Additional function for DHW heating.
20:2
Differential temperature control 2.
20:3
Differential temperature control 2 and
auxiliary function.
20:4
Differential temperature control 2 for central
heating backup.
20:5
Thermostat function.
20:6
Thermostat function and auxiliary function.
20:7
Solar heating via external heat exchanger
without additional temperature sensor.
20:8
Solar heating via external heat exchanger
with additional temperature sensor.
20:9
Solar heating of two DHW tanks.
DHW tank maximum temperature
08:60
The solar circuit pump stops when the
actual DHW temperature reaches the
maximum DHW tank temperature 140° F
(60° C).
Stagnation time reduction
0A:5
To protect system components and heat
transfer medium: the speed of the solar
circuit pump is reduced if the actual DHW
temperature is 5 K below the maximum
DHW tank temperature.
Flow rate solar circuit
0F:70
The solar circuit flow rate at maximum
pump speed is 7 l/min.
20:0
82
No extended control functions enabled.
5693 973 - 05
Extended solar control functions
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding
Coding in the factory set condition
Possible change
Priority DHW heating
A2:2
DHW tank priority applicable to heating circuit
pump and mixing valve.
A2:0
Without DHW tank priority applicable to
heating circuit pump and mixing valve.
A2:1
DHW tank priority applies only to the
mixing valves.
A5:0
Without heating circuit pump logic
function.
A5:1
to
A5:15
With heating circuit pump logic function:
Heating circuit pump “OFF”; see the
following table.
Economy function outside temperature
A5:5
With heating circuit pump logic function
(economy circuit): Heating circuit pump “OFF”
when the outside temperature (AT) is 1 K
higher than the set room temperature (RTset)
AT > RTset + 1 K
Parameter address A5:...
With heating circuit pump logic function: Heating circuit pump “OFF”
1
AT > RTset + 5 K
AT > RTset + 4 K
2
3
4
AT > RTset + 3 K
AT > RTset + 2 K
5
AT > RTset + 1 K
6
AT > RTset
AT > RTset - 1 K
7
to
15
AT > RTset - 9 K
Coding in the factory set condition
Possible change
Extended economy function mixing valve
A7:0
Only for heating circuits with mixing valve:
Without mixing valve economy function.
A7:1
With mixing valve economy function (extended
heating circuit pump logic):
Heating circuit pump also “OFF”:
- If the mixing valve has been closed for
longer than 20 min.
Heating circuit pump “ON”:
- If the mixing valve changes to control
function.
- If there is a risk of frost.
Pump idle time, transition reduced mode. Operation
5693 973 - 05
A9:7
With pump idle time (heating circuit pump
“OFF”).
(See function description on page 51).
A9:0
Without pump idle time.
A9:1
to
A9:15
With pump idle time; adjustable from 1 to 15.
1: short idle period
15: long idle period
83
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding in the factory set condition
(continued)
Possible change
Extended economy function mixing valve
Weather-compensated/room temperature hook-up
B0:0
With remote control:*2
Heating mode/reduced mode: weathercompensated.
B0:1
Heating mode: weather-compensated
Reduced mode: with room temperature hook-up
B0:2
Heating mode: with room temperature hook-up
Reduced mode: weather-compensated
B0:3
Heating mode/reduced mode: with room
temperature hook-up
B5:1
to
B5:8
Heating circuit pump logic function, see the
following table.
Economy function room temperature
B5:0
*2
With remote control:*2
No room temperature dependent heating circuit
pump logic function.
Only change the code for the system circuit A1 for boilers without lower temperature limit or for the heating circuits
with mixing valve if a remote control is connected to them.
With heating circuit pump logic function:
Parameter address B5:...
Heating circuit pump “OFF”
Heating circuit pump “ON”
1
RTactual > RTset + 5 K
RTactual > RTset + 4 K
RTactual < RTset + 4 K
RTactual < RTset + 3 K
RTactual > RTset + 3 K
RTactual > RTset + 2 K
RTactual < RTset + 2 K
RTactual < RTset + 1 K
RTactual > RTset + 1 K
RTactual > RTset
RTactual < RTset
RTactual < RTset - 1 K
RTactual > RTset - 1 K
RTactual > RTset - 2 K
RTactual < RTset - 2 K
RTactual < RTset - 3 K
2
3
4
5
6
7
8
Coding in the factory set condition
Min. supply temperature heating circuit
C5:20
Electronic minimum supply temperature limit
68° F (20° C) (only in operation at standard
room temperature).
Max. supply temperature heating circuit
C6:75
Electronic maximum supply temperature limit
set to 167° F (75° C).
Possible change
C5:1
to
C5:127
Minimum limit adjustable from 32 to 260° F
(1 to 127° C) (limited by boiler-specific
parameters).
C6:10
to
C6:127
Maximum limit adjustable from 50 to 260° F
(10 to 127° C) (limited by boiler-specific
parameters).
D5:1
The heating program changes to “Constant
operation with standard room temperature”.
D8:1
Heating program changeover via input DE1 at
extension EA1.
Heating program changeover via input DE2 at
extension EA1.
Heating program changeover via input DE3 at
extension EA1.
D5:0
With external heating program changeover
(observe setting for coding addresses “5D”,
“5E” and “5F” in the “General” group).
Heating program switches to “Constant central
heating with reduced room temperature” or
“Standby mode” (subject to the settings of the
set reduced room temperature).
External heating program changeover to heating circuit
D8:0
No heating program changeover via extension
EA1.
D8:2
D8:3
84
5693 973 - 05
Heating program - changeover
Coding 1, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding in the factory set condition
(continued)
Possible change
Slab curing function (Not used)
F1:0
Slab curing function disabled. (Not used)
F1:1
to
F1:6
Only for heating circuits with mixing valve:
Slab curing function adjustable in accordance
with 6 optional temperature/time profiles.
(Not used)
F1:15
Constant supply temperature 68° F (20° C).
F2:0
No time limit*1.
F2:1
to
F2:12
Time limit adjustable from 1 to 12 h*1.
F8:+10
to
F8:-60
Temperature limit adjustable from
+50 to -76° F (+10 to -60° C).
F8:-61
Function disabled.
F9:+10
to
F9:-60
Limit for raising the set room temperature to
the value selected for standard mode adjustable
from +50 to -76° F (+10 to -60° C).
FA:0
to
FA:50
Temperature rise adjustable from 0 to 50%.
FB:0
to
FB:150
Duration adjustable from 0 to 300 min;
1 step 2 min.
Party mode time limit
F2:8
Time limit for party mode or external heating
program changeover via pushbutton: 8 h*1.
Note: Observe settings of coding addresses
“5D”, “5E”, “5F” in the “General”
group, as well as “D5” and “D8” in the
“Heating circuit...” group.
Start temperature raising
F8:-5
Temperature limit for raising reduced mode
23° F (-5º C); see example on page 67.
Observe the setting of coding address “A3”.
End temperature raising
F9:-14
Temperature limit for raising the reduced set
room temperature 7° F (-14º C); see example
on page 67.
Set supply temperature increase
FA:20
Raising the set boiler water or supply
temperature by 20% when changing from
operation with reduced room temperature to
operation with standard room temperature.
See example on page 67.
Duration set supply temperature increase
FB:30
5693 973 - 05
*1
Duration for raising the set boiler water or
supply temperature (see coding address “FA”)
60 min.
See example on page 67.
Party mode ends automatically in the “Heating and DHW” heating program when the system changes over to
operation with standard room temperature.
85
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Calling up Coding Level 2
Note:
H In coding level 2, all codes are accessible, including the
codes from coding level 1.
H Codes that have no function due to the heating system
equipment level or the setting of other codes are not
displayed.
H Heating systems with one system circuit and
one or two heating circuits with mixing valve:
In the following, the system circuit is designated
“Heating circuit 1” and the heating circuits with mixing
valve as “Heating circuit 2” or “Heating circuit 3”.
If the heating circuits were given individual
designations, the selected designation and “HC1”,
“HC2” or “HC3” appear instead.
Press OK and
2.
Press OK and
simultaneously for approx. 4 sec.
3.
“Coding level 2”
4.
Select group of required coding address:
H “General”
H “Boiler”
H “DHW”
H “Solar”
H “Heating circuit 1/2/3”
H “All codes std device” In this group, all coding
addresses (except the coding addresses from the
“Solar” group) are displayed in ascending order.
5.
Select coding address.
6.
Select value according to the following tables and
confirm with “OK”.
7.
If you want to reset all codes to their factory set
condition:
Select “Standard setting” in “Coding level 2”.
Note: This also resets codes from coding level 1.
simultaneously for approx. 4 sec.
5693 973 - 05
86
1.
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“General” Group
Coding
Coding in the factory set condition
Possible change
00:1
00:2
to
00:10
One system circuit A1 (heating circuit 1),
without DHW heating.
For system schemes, see the following table.
5693 973 - 05
Coding
Value
address
00: ...
Description
2
One system circuit A1 (heating circuit 1) with DHW heating (automatic recognition)
3
One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating
4
One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating
5
One system circuit A1 (heating circuit 1)
One heating circuit with mixing valve M2 (heating circuit 2) without DHW heating (automatic recognition)
6
One system circuit A1 (heating circuit 1)
One heating circuit with mixing valve M2 (heating circuit 2) with DHW heating (automatic recognition).
7
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
without DHW heating
8
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
with DHW heating
9
One system circuit A1 (heating circuit 1)
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
without DHW heating (automatic recognition).
10
One system circuit A1 (heating circuit 1)
Two heating circuits with mixing valve M2 (heating circuit 2) and M3 (heating circuit 3)
with DHW heating (automatic recognition).
Coding in the factory set condition
12:5
With extension EA1:
DHW recirculation pump runtime for brief
operation:
5 min.
1E:0
With extension EA1 (analogue input 0-10 V):
Temperature demand from 32 to 212° F
(0 to 100° C):
1V
50° F (10° C)
10 V 212° F (100° C)
2E:0
Do not adjust.
2F:0
Do not adjust.
40:125 3-way mixing valve servomotor runtime in
conjunction with permanent return temperature
control at plug gSA1 125 sec.
4A:0
Sensor aJA not available.
Possible change
12:1
Runtime adjustable from 1 to 60 min.
to
12:60
1E:1
Temperature demand from 86 to 248° F
(30 to 120° C):
1 V 86° F (30° C)
10 V 248° F (120° C)
40:5
to
40:199
4A:1
Runtime adjustable from 5 to 199 sec.
4B:0
Sensor aJB not available.
4B:1
4C:0
Connection at plug sÖA1:
Heating circuit pump.
4C:1
Sensor aJB available (e.g. return temperature
sensor T2); automatic recognition.
Primary pump, primary store system.
Sensor aJA available (e.g. return temperature
sensor T1); automatic recognition.
87
Coding 2, Vitotronic 300-K
(continued)
Coding in the factory set condition
4D:1
Connection at plug sL:
Shunt pump.
4E:1
Connection at plug gSA1:
3-way mixing valve for return temperature
control.
4F:5
Run-on time, shunt or distribution pump 5 min.
54:0
Without solar thermal system.
Possible change
4D:0
Distribution pump.
4E:2
Motor for 3-way mixing valve, primary store
system.
4F:0
4F:1
to
4F:60
54:1
54:2
54:3
No pump run-on.
Run-on time adjustable from 1 to 60 min.
54:4
5B:0
5C:0
Without extension EA1.
Function output aBJ at extension EA1:
Central fault message.
5B:1
5C:1
5C:2
5C:3
5C:4
5C:5
5D:0
Function input DE1 at extension EA1:
No function.
5D:1
5D:2
5D:3
5D:4
5D:5
5D:6
5E:0
Function input DE2 at extension EA1:
No function.
5E:1
5E:2
5E:3
5E:4
5E:5
5E:6
88
With Vitosolic 100; automatic recognition.
With Vitosolic 200; automatic recognition.
With solar control module, type SM1, without
auxiliary function; automatic recognition.
With solar control module, type SM1, with
auxiliary function, e.g. central heating backup;
automatic recognition.
With extension EA1; automatic recognition.
Accessories pump.
No function.
Heating circuit pump A1 is switched to low
speed (reduced mode).
Heating circuit pump M2 is switched to low
speed (reduced mode).
Heating circuit pump M3 is switched to low
speed (reduced mode).
Heating program changeover.
External demand with minimum set supply
temperature.
Selection of set value in coding address “9B”
in the “General” group.
External blocking.
External blocking with fault message.
Fault message input.
Brief operation, DHW recirculation pump
(pushbutton function).
Setting of runtime for DHW recirculation pump
in coding address “12” in the “General” group.
Heating program changeover.
External demand with minimum set supply
temperature.
Selection of set value in coding address “9B”
in the “General” group.
External blocking.
External blocking with fault message.
Fault message input.
Brief operation, DHW recirculation pump
(pushbutton function).
Setting of runtime for DHW recirculation pump
in coding address “12” in the “General” group.
5693 973 - 05
“General” Group
Vitotronic 300, GW5B & MW1B Installation and Service
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“General” Group
(continued)
Coding in the factory set condition
5F:0
Function input DE3 at extension EA1:
No function.
6E:50
No display correction of the outside
temperature.
76:0
Without LON communication module.
77:5
LON participant number.
78:1
79:1
LON communication enabled.
With LON communication module:
Control unit is fault manager.
Without central control of heating circuits.
7A:0
Possible change
5F:1
Heating program changeover.
5F:2
External demand with minimum set supply
temperature.
Selection of set value in coding address “9B”
in the “General” group.
5F:3
External blocking.
5F:4
External blocking with fault message.
5F:5
Fault message input.
5F:6
Brief operation, DHW recirculation pump
(pushbutton function).
Setting of runtime for DHW recirculation pump
in coding address “12” in the “General” group.
6E:0
Display correction –5 K
to
to
6E:49
Display correction –0.1 K
6E:51
Display correction +0.1 K
to
to
6E:99
Display correction +4.9 K
76:1
With LON communication module (automatic
recognition).
77:1
LON participant number, adjustable from 1 to
to
99:
77:99
1 – 4 = Boiler control unit
5 = Cascade control unit
10 – 97 = Vitotronic 200-H
98 = Vitogate
99 = Vitocom
78:0
LON communication disabled.
79:0
Control unit is not fault manager.
7A:1
7A:2
7A:3
7B:1
7F:1
With LON communication module:
Control unit transmits the time.
Detached house.
80:6
If a fault occurs for at least
30 s, a fault message is displayed.
81:1
Automatic summer/wintertime changeover.
7B:0
7F:0
80:0
80:2
to
80:199
81:0
81:2
5693 973 - 05
81:3
82:3
Summer time starts:
March
83:5
Summer time starts:
Week 5 of the selected month.
82:1
to
82:12
83:1
to
83:5
With central control (see page 66):
System circuit A1 (heating circuit 1).
Heating circuit with mixing valve M2
(heating circuit 2).
Heating circuit with mixing valve M3
(heating circuit 3).
Time not transmitted.
Apartment building.
Separate adjustment of holiday program and
time program for DHW heating possible.
Immediate fault message.
The minimum fault duration until a fault
message is issued is adjustable from 10 to
995 sec; 1 step 5 sec.
Manual summer/wintertime changeover.
Use of the radio clock receiver (automatic
recognition).
With LON communication module:
The control unit receives the time.
January to December
Week 1 to week 5 of the selected month
89
Coding 2, Vitotronic 300-K
(continued)
Coding in the factory set condition
84:7
Summer time starts:
Last Sunday of the selected month.
Possible change
84:1
Monday to Sunday
to
84:7
85:1
January to December
to
85:12
86:1
Week 1 to week 5 of the selected month
to
86:5
87:1
Monday to Sunday
to
87:7
88:1
Temperature displayed in °F (Fahrenheit).
-
85:10
Wintertime starts:
October.
86:5
Wintertime starts:
Week 5 of the selected month.
87:7
Summer time starts:
Last Sunday of the selected month.
88:0
8A:175
Temperature displayed in °C (Celsius).
Do not adjust.
8F:0
Operation in the standard menu and extended
menu enabled.
8F:1
Operation in the standard menu and extended
menu blocked.
Note: The relevant code is only enabled when
you exit the service level (see page 51).
8F:2
Operation enabled in the standard menu;
blocked in the extended menu.
90:128
Time constant for calculating adjusted outside
temperature 21.3 h.
90:1
to
90:199
Fast (low values) or slow (high values)
matching of the supply temperature, subject
to the set value when the outside temperature
changes. 1 step 10 min.
91:0
91:1
Connection at terminals 1 and 2 in plug aVD
disabled (external heating program changeover)
(see page 36).
91:2
96:1
97:2
With extension for heating circuits 2 and 3
with mixing valve.
With LON communication module:
The control unit sends the outside temperature
to the Vitotronic 200-H.
90
Heating circuit with mixing valve M2 (heating
circuit 2).
91:3
Heating circuits without mixing valve A1
(heating circuit 1) and heating circuit with
mixing valve M2 (heating circuit 2).
91:4
Heating circuit with mixing valve M3 (heating
circuit 3).
91:5
Heating circuits without mixing valve A1
(heating circuit 1) and heating circuit with
mixing valve M3 (heating circuit 3).
91:6
Heating circuits with mixing valve M2 (heating
circuit 2) and M3 (heating circuit 3).
91:7
System circuit A1 (heating circuit 1) and
heating circuits with mixing valve M2 (heating
circuit 2) and M3 (heating circuit 3).
96:0
Without extension for heating circuits 2 and 3
with mixing valve.
The outside temperature of the sensor
connected to the control unit is only utilized
internally.
The control unit receives the outside
temperature from the Vitotronic 200-H.
System number adjustable from 1 to 5.
97:0
97:1
98:1
Contact affects the following heating circuits:
System circuit A1 (heating circuit 1).
With LON communication module:
98:1
Viessmann system number (in conjunction with to
monitoring several systems via Vitocom LAN1). 98:5
5693 973 - 05
“General” Group
Vitotronic 300, GW5B & MW1B Installation and Service
Vitotronic 300, GW5B & MW1B Installation and Service
“General” Group
Coding 2, Vitotronic 300-K
(continued)
Coding in the factory set condition
99:0
Connection at terminals 2 and 3 in plug aVD
disabled (external blocking/ external “Mixing
valve closed”) (see page 36).
9A:0
9B:70
9C:20
5693 973 - 05
9F:8
Possible change
99:1
No function.
99:2
External “Mixing valve closed”
Heating circuit with mixing valve
M2 (heating circuit 2).
99:3
No function.
99:4
External “Mixing valve closed”
Heating circuit with mixing valve
M3 (heating circuit 3).
99:5
No function.
99:6
External “Mixing valve closed”
Heating circuits with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
99:7
No function.
99:8
External blocking.
99:9
No function.
99:10
External blocking/external
“Mixing valve closed”
Heating circuits with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
99:11
No function.
99:12
External blocking/external
“Mixing valve closed”
Heating circuit with mixing valve
M3 (heating circuit 3).
99:13
No function.
99:14
External blocking/external
“Mixing valve closed”
Heating circuits with mixing valve M2
(heating circuit 2) and M3 (heating circuit 3).
99:15
No function.
9A:1
No function.
Connection at terminals 1 and 2 in plug aVD
9A:2
External “Mixing valve open”
disabled (external “Mixing valve open”)
Heating circuit with mixing valve M2
(see page 36).
(heating circuit 2).
9A:3
No function.
9A:4
External “Mixing valve open”
Heating circuit with mixing valve M3
(heating circuit 3).
9A:5
No function.
9A:6
External “Mixing valve open”
Heating circuits with mixing valve M2 (heating
circuit 2) and M3 (heating circuit 3).
9A:7
No function.
Set supply temperature for external demand
9B:0
Set value adjustable from 32 to 260° F
158° F (70° C).
to
(0 to 127° C).
9B:127
With LON communication module:
9C:0
No monitoring.
Monitoring LON participants.
9C:5
Time adjustable from 5 to 60 min.
If there is no response from a participant after to
20 min., the values specified inside the control 9C:60
unit are used. Only then will a fault message
be issued.
Differential temperature 8 K; only in
9F:0
Differential temperature adjustable from 0 to
conjunction with heating circuits with mixing
to
40 K.
valve M2 and M3.
9F:40
91
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Cascade” Group
Coding
Coding in the factory set condition
Possible change
35:4
4 boilers connected to the Vitotronic 300-K.
35:1
to
35:4
1 to 4 boilers connected to the Vitotronic 300-K.
36:0
Electronic minimum system supply temperature
limit set to 32° F (0° C).
36:1
to
36:127
Minimum limit adjustable from 32 to 260° F
(0 to 127° C).
37:80
Electronic maximum system supply temperature 37:20
limit set to 176° F (80° C).
to
37:127
Maximum limit adjustable from 68 to 260° F
(20 to 127° C).
92
No lead boiler or boiler sequence changeover;
see function description in chapter “Cascade
control”.
38:1
Lead boiler changeover:
Every first day of the month, the boiler with
the shortest number of hours run by its burner
becomes the lead boiler.
38:2
to
38:200
Lead boiler changeover after 200 to 20,000
hours run.
1 step 100 hours run
39:0
No permanent lead boiler.
39:1
to
39:4
Boiler 1, 2, 3 or 4 is the permanent lead boiler.
3A:0
No permanent last boiler.
3A:1
to
3A:4
Boiler 1, 2, 3 or 4 is permanently the last boiler.
3B:1
Stand-alone parallel boiler circuit:
With supply temperature sensor (see page 62).
3B:0
Stand-alone parallel boiler circuit:
Without supply temperature sensor
(see page 62).
3B:2
Stand-alone serial boiler circuit:
Without supply temperature sensor
(see page 62).
3B:3
Stand-alone serial boiler circuit:
With supply temperature sensor
(see page 62).
3B:4
Sequential control with supply temperature
sensor (see page 62).
Condensing strategy (see page 63).
3C:2
3C:2 Conventional strategy 2 (see page 64).
3C:0
3C:1
Conventional strategy 1 (see page 64).
3D:1
Output statement for condensing strategy and
conventional strategy 1.
3D:0
No output statement.
3E:0
Distribution pump only runs when there is a
heat demand.
3E:1
Distribution pump always runs; shutdown
through “External blocking” signal.
3F:0
Without DHW tank priority control for
distribution pump.
3F:1
With DHW tank priority control for distribution
pump.
41:31
No ECO threshold boiler 1.
41:−30
to
41:+30
ECO threshold boiler 1 adjustable from
-22 to +86° F (−30 to +30° C).
42:31
No ECO threshold boiler 2.
42:−30
to
42:+30
ECO threshold boiler 2 adjustable from
-22 to +86° F (−30 to +30° C).
Note: Vitotronic 300-K regulates only
according to conventional strategy 2.
5693 973 - 05
38:0
Note: Value must not be higher than the lowest
value of coding address “06” in the
“Boiler” group of every Vitotronic 300,
GW5B.
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Cascade” Group
(continued)
Coding in the factory set condition
Possible change
43:31
No ECO threshold boiler 3.
43:−30
to
43:+30
ECO threshold boiler 3 adjustable from
-22 to +86° F (−30 to +30° C).
44:31
No ECO threshold boiler 4.
44:−30
to
44:+30
ECO threshold boiler 4 adjustable from
-22 to +86° F (−30 to +30° C).
45:60
Start integral threshold set to 60 K x min.
45:1
to
45:255
Start integral threshold adjustable from 1 to
255 K x min.
46:1
to
46:255
Stop integral threshold adjustable from 1 to
255 K x min.
47:2
to
47:30
Stop differential adjustable from 2 to 30 K.
46:40
47:15
Stop integral threshold set to 40 K x min.
Stop differential set to 15 K.
Note: If the threshold is exceeded, one boiler
or one burner stage is switched on.
Note: If the threshold is exceeded, one boiler
or one burner stage is switched off.
Note: One boiler or one burner stage will
be switched off if the actual supply
temperature exceeds the set supply
temperature by this value.
48:35
Do not adjust.
--
--
49:40
Do not adjust.
--
--
“DHW” Group
Coding in the factory set condition
55:0
DHW tank heating, hysteresis ± 2.5 K.
56:0
58:0
Without auxiliary function for DHW heating.
59:0
DHW tank heating:
Set start point –2.5 K
Set stop point +2.5 K
For DHW heating:
The set supply temperature is determined
by the highest system supply temperature
demand.
5A:0
60:20
5693 973 - 05
Set DHW temperature adjustable from 50 to
140° F (10 to 60° C).
61:1
During DHW heating, the common supply
temperature is max. 20 K higher than the set
DHW temperature.
The circulation pump for DHW tank heating is
started immediately.
Possible change
55:1
Adaptive DHW tank heating enabled.
55:2
DHW tank temperature control with 2 DHW tank
temperature sensors.
55:3
DHW tank temperature control, primary store
system.
56:1
Set DHW temperature adjustable from 50 to 194° F
(10 to 95° C).
58:10
to
58:60
59:1
to
59:10
5A:1
60:10
to
60:50
61:0
Note: Observe the max. permissible DHW
temperature.
Adjust the temperature controller “R”.
Input of a second set DHW temperature,
adjustable from 50 to 194° F (10 to 95° C).
(observe coding addresses “56” and “63”).
Start point adjustable from 1 to 10 K below set
value.
For DHW heating:
The set supply temperature is determined by the
DHW tank supply temperature demand.
The differential between the common supply
temperature and the set DHW temperature is
adjustable from 10 to 50 K.
The circulation pump for DHW tank heating is
started depending on the boiler water temperature.
93
Coding 2, Vitotronic 300-K
(continued)
Coding in the factory set condition
Possible change
62:10
Circulation pump with a run-on time after DHW
tank heating of max. 10 min.
64:2
During party mode and after external changeover
to constant operation with the standard room
temperature:
Constant DHW heating enabled and DHW
recirculation pump “ON”.
Input of the set DHW temperature:
At the control unit programming unit and all
installed Vitotrol 300A remote controls.
62:0
62:1
to
62:15
64:0
66:4
64:1
66:0
66:1
66:2
66:3
66:5
66:6
66:7
67:40
For solar DHW heating:
Set DHW temperature 104° F (40° C).
Reheating is suppressed above the selected set
temperature (DHW heating by the boiler only if
solar energy is not sufficient).
67:0
67:10
to
67:95
68:8
With 2 DHW tank temperature sensors
(code “55:2”):
DHW tank heating stop point at set value x 0.8.
With 2 DHW tank temperature sensors
(code “55:2”):
DHW tank heating start point at set value x 0.7.
Runtime, servomotor, mixing valve, heat
exchanger set, Vitotrans 222, (80 and 120 kW):
75 sec.
DHW recirculation pump “ON” according to time
program when DHW heating is enabled.
DHW recirculation pump:
“ON” according to time program.
68:2
to
68:10
69:1
to
69:9
6A:10
to
6A:255
70:1
69:7
6A:75
70:0
71:0
72:0
DHW recirculation pump:
“ON” according to time program.
71:1
71:2
72:1
72:2
94
73:0
DHW recirculation pump:
“ON” according to time program.
75:0
DHW recirculation pump “ON” during economy
mode according to time program.
73:1
to
73:6
73:7
75:1
Circulation pump without run-on.
Run-on time adjustable from 1 to 15 min.
No DHW heating, DHW recirculation pump
“OFF”.
DHW heating and DHW recirculation pump
according to time program.
At the control unit programming unit.
At the control unit programming unit and remote
control system circuit A1 (heating circuit ).
At the control unit programming unit and
remote control heating circuit with mixing valve
M2 (heating circuit 2).
At the control unit programming unit and
remote control heating circuit with mixing valve
M3 (heating circuit 3).
At the remote control system circuit A1
(heating circuit 1).
At the remote control heating circuit with
mixing valve M2 (heating circuit 2).
At the remote control heating circuit with
mixing valve M3 (heating circuit 3).
No third set value.
Set DHW temperature adjustable from 50 to
194° F (10 to 95° C). (limited by boiler specific
parameters).
Observe the setting of coding address “56”.
Factor adjustable from 0.2 to 1;
1 step 0.1
Factor adjustable from 0.1 to 0.9;
1 step 0.1
For heat exchanger set Vitotrans 222 (240 kW):
set 113 sec.
Runtime adjustable from 10 to 255 sec.
DHW recirculation pump “ON” according to
time program.
“OFF” during DHW heating to the first set value.
“ON” during DHW heating to the first set value.
“OFF” during DHW heating to the second set
value.
“ON” during DHW heating to the second set
value.
“ON” from once per hour for 5 min. up to
6 times per hour for 5 min. during the time
program.
Constantly “ON”.
DHW recirculation pump “OFF” during economy
mode.
5693 973 - 05
“DHW” Group
Vitotronic 300, GW5B & MW1B Installation and Service
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Solar” Group
Only in conjunction with solar control module, type SM1.
Coding
5693 973 - 05
Coding in the factory set condition
Possible change
00:8
The solar circuit pump starts when the
00:2
collector temperature exceeds the actual DHW to
temperature by 8 K.
00:30
The differential between the actual DHW
temperature and the start point for the solar
circuit pump is adjustable from 2 to 30 K.
01:4
The solar circuit pump stops when the
differential between the collector temperature
and the actual DHW temperature is less than
4 K.
01:1
to
01:29
The differential between the actual DHW
temperature and the stop point for the solar
circuit pump is adjustable from 1 to 29 K.
02:0
Solar circuit pump (multi stage) without speed
control by solar control module SM1.
02:1
Solar circuit pump (multi stage) is speedcontrolled with wave pack control.
02:2
Solar circuit pump is speed-controlled with
PWM control.
03:10
The temperature differential between the
collector temperature and actual DHW
temperature is regulated to 10 K.
03:5
to
03:20
The differential temperature control between
the collector temperature and actual DHW
temperature is adjustable from 5 to 20 K.
04:4
Controller amplification of the speed control
4%/K.
04:1
to
04:10
Controller amplification adjustable from 1 to
10%/K.
05:10
Minimum speed of the solar circuit pump
10% of the maximum speed.
05:2
to
05:100
Minimum speed of the solar circuit pump is
adjustable from 2 to 100%.
06:75
Maximum speed of the solar circuit pump
75% of the maximum possible speed.
06:1
to
06:100
Maximum speed of the solar circuit pump is
adjustable from 1 to 100%.
07:0
Interval function of the solar circuit pump
switched off.
07:1
Interval function of the solar circuit pump
switched on.
To capture the collector temperature more
accurately, the solar circuit pump starts for
short cycles.
08:60
The solar circuit pump stops when the actual
08:10
DHW temperature reaches the maximum DHW to
tank temperature 140° F (60° C).
08:90
The maximum DHW tank temperature is
adjustable from 50 to 194° F (10 to 90° C).
09:130
The solar circuit pump stops if the collector
temperature reaches 266° F (130° C)
(maximum collector temperature to protect
the system components).
09:20
to
09:200
The temperature is adjustable from 68 to
392° F (20 to 200° C).
0A:5
To protect system components and heat
transfer medium:
The speed of the solar circuit pump is reduced
if the actual DHW tank temperature is 5 K
below the maximum DHW tank temperature.
0A:0
Stagnation time reduction is disabled.
0A:1
to
0A:40
Value for stagnation time reduction is
adjustable from 1 to 40 K.
0B:0
Frost protection function for solar circuit
switched off.
0B:1
Frost protection function for solar circuit
switched on (not required with Viessmann
heat transfer medium).
0C:1
Delta T monitoring switched on.
No flow rate captured in the solar circuit, or
flow rate too low.
0C:0
Delta T monitoring switched off.
95
Coding 2, Vitotronic 300-K
“Solar” Group
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
Coding in the factory set condition
Possible change
0D:1
Night circulation monitoring switched on.
0D:0
Unintentional flow rate is captured in the solar
circuit (e.g. at night).
Night circulation monitoring switched off.
0E:1
Calculation of solar yield with Viessmann heat 0E:2
transfer medium.
Calculation of solar yield with water as heat
transfer medium (never adjust, as operation
is only possible with Viessmann heat transfer
medium).
0E:0
Calculation of solar yield switched off.
0F:70
The solar circuit flow rate at maximum pump
speed is 7 L/min.
0F:1
to
0F:255
Flow rate adjustable from 0.1 to 25.5 l/min.
1 step 0.1 l/min
10:0
Target temperature control switched off (see
coding address “11”).
10:1
Target temperature control switched on.
11:50
Set solar DHW temperature 122° F (50° C).
11:10
to
- Target temperature control switched on
11:90
(code “10:1”): Temperature at which the
solar heated water in the DHW tank is to be
stratified.
The set solar DHW temperature is adjustable
from 50 to 194° F (10 to 90° C).
12:10
20:0
22:8
96
Minimum collector temperature 50° F (10° C).
The solar circuit pump will only start when
the set minimum collector temperature is
exceeded.
12:0
Minimum collector temperature function disabled.
12:1
to
12:90
The minimum collector temperature is
adjustable from 1
No extended control functions enabled.
20:1
Additional function for DHW heating.
20:2
Differential temperature control 2.
20:3
Differential temperature control 2 and auxiliary
function.
20:4
Differential temperature control 2 for central
heating backup.
20:5
Thermostat function.
20:6
Thermostat function and auxiliary function.
20:7
Solar heating via external heat exchanger
without additional temperature sensor.
20:8
Solar heating via external heat exchanger with
additional temperature sensor
20:9
Solar heating of two DHW tanks.
22:2
to
22:30
Start temperature differential for central
heating backup is adjustable from 2 to 30 K.
Start temperature differential for central
heating backup: 8 K.
Switching output sS is switched on when
the temperature at sensor / exceeds the
temperature at sensor aÖ by the selected
value.
5693 973 - 05
- Extended control functions set to heat two
DHW tanks (code “20:8”): The second
DHW tank is heated when one DHW tank
reaches its set DHW temperature.
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
5693 973 - 05
“Solar” Group
(continued)
Coding in the factory set condition
Possible change
23:4
Stop temperature differential for central heating
backup: 4 K.
Switching output sS is switched off when the
temperature at sensor / falls below the stop
point. The stop point is the sum of the temperature
at sensor aÖ and the value selected for the stop
temperature differential.
23:2
to
23:30
Stop temperature differential for
central heating backup is adjustable
from 1 to 29 K.
24:40
Start temperature for thermostat function 104° F
(40° C).
Start temperature for thermostat function ≤ stop
temperature for thermostat function:
Thermostat function, e.g. for reheating.
Switching output sS is switched on when the
temperature at sensor / falls below the start
temperature for the thermostat function.
Start temperature for thermostat function > stop
temperature for thermostat function:
Thermostat function, e.g. for utilizing excess heat.
Switching output sS is switched on when the
temperature at sensor / exceeds the start
temperature for the thermostat function.
24:0
to
24:100
Start temperature for thermostat
function is adjustable from 0 to 100 K.
25:50
Stop temperature for thermostat function 122° F
(50° C).
Start temperature for thermostat function ≤ stop
temperature for thermostat function:
Thermostat function e.g. for reheating. Switching
output sS is switched off when the temperature
at sensor / exceeds the start temperature for the
thermostat function.
Start temperature for thermostat function > stop
temperature for thermostat function:
Thermostat function e.g. for utilizing excess heat.
Switching output sS is switched off when the
temperature at sensor / falls below the start
temperature for the thermostat function.
25:0
to
25:100
Start temperature for thermostat
function is adjustable from 0 to 100 K.
26:1
Priority for DHW tank 1 – with alternate heating.
Only when setting code “20:8”
26:0
Priority for DHW tank 1
– without alternate heating
26:2
Priority for DHW tank 2
– without alternate heating.
26:3
Priority for DHW tank 2
– with alternate heating.
26:4
Alternate heating without priority for
one of the DHW tanks.
27:15
Alternate heating time 15 min.
The DHW tank without priority is heated at most
for the duration of the set alternate heating time if
the DHW tank with priority is heated up.
27:5
to
27:60
The alternate heating time is adjustable
from 5 to 60 min.
28:3
Alternate pause time 3 min.
After the selected alternate heating time for the
DHW tank without priority has expired, the rise
in collector temperature is captured during the
alternate pause time.
28:1
to
28:60
The alternate pause time is adjustable
from 1 to 60 min.
97
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding
Coding in the factory set condition
A0:0
Without remote control.
A1:0
A2:2
A3:2
Only with Vitotrol 200A: All possible settings
at the remote control can be accessed.
DHW tank priority applicable to heating circuit
pump and mixing valve.
Outside
Heating
Outside
Heating
temperature below 34° F (1° C):
circuit pump “ON”.
temperature above 37° F (3° C):
circuit pump “OFF”.
Possible change
A0:1
With Vitotrol 200A; automatic recognition.
A0:2
A0:2 With Vitotrol 300A or Vitohome 300;
automatic recognition.
A1:1
Only party mode can be set at the remote
control.
A2:0
Without DHW tank priority applicable to
heating circuit pump and mixing valve.
A2:1
DHW tank priority applies only to the mixing
valves.
A3:-9
Heating circuit pump “ON/ OFF” (see the
to
following table).
A3:15
Note: If a value below 34° F (1° C) is selected, there is a risk that pipes outside the thermal envelope of the building
could freeze up. The standby mode in particular should be taken into consideration, e.g. during holidays.
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
to
15
Heating circuit pump
“ON”
14° F (-10° C)
16° F (-9° C)
18° F (-8° C)
19° F (-7° C)
21° F (-6° C)
23° F (-5° C)
25° F (-4° C)
27° F (-3° C)
28° F (-2° C)
30° F (-1° C)
32° F (0° C)
34° F (1° C)
to
57° F (14° C)
Coding in the factory set condition
A4:0
With frost protection.
A5:5
With heating circuit pump logic function
(economy circuit): Heating circuit pump
“OFF” when the outside temperature (AT)
is 1 K higher than the set room temperature
(RTset) AT > RTset + 1 K.
Parameter address A5:...
1
2
3
4
5
6
7
to
15
98
“OFF”
18° F (-8° C)
19° F (-7° C)
21° F (-6° C)
23° F (-5° C)
25° F (-4° C)
27° F (-3° C)
28° F (-2° C)
30° F (-1° C)
32° F (0° C)
34° F (1° C)
36° F (2° C)
37° F (3° C)
to
61° F (16° C)
Possible change
A4:1
No frost protection; this setting is only
possible if code “A3:-9” has been selected.
Note: Observe information regarding coding
address “A3”.
A5:0
Without heating circuit pump logic function.
A5:1
With heating circuit pump logic function:
to
Heating circuit pump “OFF”; see the
A5:15
following table.
With heating circuit pump logic function: Heating circuit pump “OFF”
AT > RTset + 5 K
AT > RTset + 4 K
AT > RTset + 3 K
AT > RTset + 2 K
AT > RTset + 1 K
AT > RTset
AT > RTset - 1 K
AT > RTset - 9 K
5693 973 - 05
Parameter Address A3:...
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding in the factory set condition
A6:36
Extended economy control disabled.
A7:0
Only for heating circuits with mixing valve:
Without mixing valve economy function.
(continued)
Possible change
A6:5
Extended economy control enabled, i.e.
to
the burner and heating circuit pump will be
A6:35
stopped and the mixing valve closed at a
variable value, adjustable between 41 to 95° F
(5 and 35° C) plus 34° F (1° C).
The base value is the adjusted outside
temperature.
This value is based on the actual outside
temperature and a time constant, which takes
the cooling down of an average building into
consideration.
A7:1
With mixing valve economy function
(extended heating circuit pump logic):
Heating circuit pump also “OFF”:
- If the mixing valve has been closed for
longer than 12 min.
Heating circuit pump “ON”:
- If the mixing valve changes to control
function.
A9:7
With pump idle time
(heating circuit pump “OFF”)
(See function description on page 51).
AA:2
With output reduction by temperature sensor
aJA.
With remote control:*2
Heating mode/reduced mode: weathercompensated.
B0:0
A9:0
A9:1
to
A9:15
AA:0
AA:1
B0:1
B0:2
B0:3
B2:8
B5:0
*2
Heating circuit pump logic function, see the
following table.
Only change the code for the system circuit A1 for boilers without lower temperature limit or for the heating circuits
with mixing valve if a remote control is connected to them.
Parameter address B5:...
With heating circuit pump logic function:
Heating circuit pump “OFF”
Heating circuit pump “ON”
1
1 RTactual > RTset + 5 K
2 RTactual > RTset + 4 K
RTactual < RTset + 4 K
RTactual < RTset + 3 K
3 RTactual > RTset + 3 K
4 RTactual > RTset + 2 K
RTactual < RTset + 2 K
RTactual < RTset + 1 K
5
5 RTactual > RTset + 1 K
RTactual < RTset
6
7
6 RTactual > RTset
7 RTactual > RTset
RTactual < RTset - 1 K
- 1 K RTactual < RTset - 2 K
8
8 RTactual > RTset
- 2 K RTactual < RTset - 3 K
2
3
4
5693 973 - 05
With remote control and for the heating
B2:0
circuit, operation with room temperature hook- B2:1
up must be programmed:*2
to
Room influence factor 8.
B2:64
With remote control:*2
B5:1
No room temperature dependent heating
to
circuit pump logic function.
B5:8
- If there is a risk of frost.
Without pump idle time.
With pump idle time; adjustable from 1 to 15.
1: short idle period
15: long idle period
Without output reduction.
No function.
Heating mode: weather-compensated
Reduced mode: with room temperature hook-up
Heating mode: with room temperature hook-up
Reduced mode: weather-compensated
Heating mode/reduced mode: with room
temperature hook-up
Without room influence.
Room influence factor adjustable from 1 to
64.
99
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding in the factory set condition
B6:0
With remote control:*2
Without quick heat-up/ quick setback.
B7:0
With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:*2
Without start optimization.
Possible change
B6:1
With quick heat-up/quick setback (see
function description on page 65).
B7:1
With start optimization, max. heat-up time
delay 2 h 30 min.
B7:2
With start optimization, max. heat-up time
delay 15 h 50 min.
B8:10
B8:11
to
B8:255
Heat-up gradient adjustable from 11 to 255
min/K.
B9:1
With learning start optimization.
C0:1
With stop optimization, max. setback time
delay 1 h.
With stop optimization, max. setback time
delay 2 h.
B9:0
C0:0
With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:*2
Heat-up gradient start optimization 10 min/K.
With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:*2
Without learning start optimization.
With remote control:*2
Without stop optimization.
C0:2
C1:0
With remote control:*2
Without stop optimization.
C2:0
With remote control:*2
Without learning stop optimization.
Only for heating circuits with mixing valve:
Mixing valve runtime 125 sec.
C3:125
C1:1
to
C1:12
C2:1
With stop optimization of setback time
delay, adjustable from 10 to 120 min;
1 step 10 min
With learning stop optimization.
C3:10
to
C3:255
C4:0
to
C4:3
Runtime adjustable from 10 to 255 sec.
C4:1
System dynamics:
Mixing valve control characteristics
C5:20
Electronic minimum supply temperature limit C5:1
68° F (20° C) (only in operation at standard to
room temperature).
C5:127
Electronic maximum supply temperature limit C6:10
set to 167° F (75° C).
to
C6:127
C6:75
Controller responds too quickly (cycles
between “Open” and “Closed”):
select a lower value.
Controller responds too slowly (temperature
is not held sufficiently):
select a higher value.
Minimum limit adjustable from 34 to 260° F
(1 to 127° C).
Maximum limit adjustable from 50 to 260° F
(10 to 127° C).
C8:31
With remote control and for the heating
circuit, operation with room temperature
hook-up must be programmed:*2
No room influence limit.
C8:1
to
C8:30
Room influence limit adjustable from 1 to 30 K.
D5:0
With external heating program changeover
(observe setting of coding address “5D”,
“5E” and “5F” and “91” in the “General”
group):
Heating program switches to “Constant
central heating with reduced room
temperature” or “Standby mode” (subject
to the settings of the set reduced room
temperature).
D5:1
The heating program changes to “Constant
operation with standard room temperature”.
*2
100
(continued)
Only change the code for the system circuit A1 for boilers without lower temperature limit or for the heating circuits
with mixing valve if a remote control is connected to them.
5693 973 - 05
Coding 2, Vitotronic 300-K
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding in the factory set condition
D8:0
E1:1
E2:50
Possible change
No heating program changeover via extension D8:1
EA1
Heating program changeover via input DE1
at extension
EA1.
D8:2
Heating program changeover via input DE2
at extension
D8:3
Heating program changeover via input DE3
at extension
With remote control:
Set day temperature adjustable at the remote
control unit from 50 to 86° F (10 to 30º C).
E1:0
Set day temperature adjustable from 37 to 73° F
(3 to 23º C).
E1:2
Set day temperature adjustable from 63 to 99° F
(17 to 37º C).
50 With remote control:
No display correction of the actual room
temperature.
E2:0
to
E2:49
Display correction –5 K
to
Display correction –0.1 K
E2:51
to
E2:99
Display correction +0.1 K
to
Display correction +4.9 K
F1:0
Slab curing function disabled. (Not used)
F1:1
to
F1:6
Only for heating circuits with mixing valve:
Slab curing function adjustable in accordance
with 6 optional temperature/time profiles.
(Not used)
F1:15
Constant supply temperature 68° F (20° C).
F2:8
Time limit for party mode or external heating
program changeover via pushbutton: 8 h*1.
F2:0
No time limit*1.
F2:1
to
F2:12
Time limit adjustable from 1 to 12 h*1.
Note: Observe settings of coding addresses
“5D”, “5E”, “5F” in the “General”
group, as well as “D5” and “D8” in the
“Heating circuit...” group.
F8:-5
Temperature limit for raising reduced mode
23° F (-5º C); see example on page 67.
Observe the setting of coding address “A3”.
F8:+10 Temperature limit adjustable from
to
+50 to -76° F (+10 to -60° C).
F8:-60
F8:-61
Function disabled.
F9:-14
Temperature limit for raising the reduced set
room temperature 7° F (-14º C); see example
on page 67.
F9:+10 Limit for raising the set room temperature to
the value selected for standard mode adjustable
to
F9:-60
from +50 to -76° F (+10 to -60° C).
FA:20
Raising the set boiler water or supply
temperature by 20% when changing from
operation with reduced room temperature to
operation with standard room temperature.
See example on page 68.
FA:0
to
FA:50
Temperature rise adjustable from 0 to 50 %.
FB:30
Duration for raising the set boiler water or
supply temperature (see coding address
“FA”) 60 min.
See example on page 68
FB:0
to
FB:150
Duration adjustable from 0 to 300 min;
1 step 2 min.
*1
5693 973 - 05
(continued)
Party mode ends automatically in the “Heating and DHW” heating program when the system changes over to
operation with standard room temperature.
101
Coding 2, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
“Heating Circuit 1”, “Heating Circuit 2”, “Heating Circuit 3” Group
Coding in the factory set condition
Possible change
F2:8
F2:0
No time limit*1.
F2:1
to
F2:12
Time limit adjustable from 1 to 12 h*1.
F8:+10
to
F8:-60
Temperature limit adjustable from
+50 to -76° F (+10 to -60° C).
F8:-61
Function disabled.
Time limit for party mode or external heating
program changeover via pushbutton: 8 h*1.
Note: Observe settings of coding addresses
“5D”, “5E”, “5F” in the “General”
group, as well as “D5” and “D8” in the
“Heating circuit...” group.
F8:-5
Temperature limit for raising reduced mode
23° F (-5º C); see example on page 67.
Observe the setting of coding address “A3”.
F9:-14
Temperature limit for raising the reduced set
room temperature 7° F (-14 ºC); see example
on page 67.
F9:+10
to
F9:-60
Limit for raising the set room temperature
to the value selected for standard mode
adjustable from +50 to -76° F (+10 to -60° C).
FA:20
Raising the set boiler water or supply
temperature by 20% when changing from
operation with reduced room temperature to
operation with standard room temperature.
See example on page 68.
FA:0
to
FA:50
Temperature rise adjustable from 0 to 50 %.
FB:30
Duration for raising the set boiler water or
supply temperature (see coding address “FA”)
60 min.
See example on page 68
FB:0
to
FB:150
Duration adjustable from 0 to 300 min;
1 step 2 min.
Party mode ends automatically in the “Heating and DHW” heating program when the system changes over to
operation with standard room temperature.
5693 973 - 05
*1
102
(continued)
Wiring, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Connection and Wiring Diagram
5693 973 - 05
A1 PCB, extension for heating circuit 2 and 3 with
mixing valve (optional accessory)
A2 PCB, low voltage
A3 PCB 120V~
A6 Programming unit
A7 Optolink PCB/emissions test switch
A8 PCB
A9
A10
A11
A12
X
Boiler coding card
LON communication module (accessories)
Power supply unit PCB
Programming unit ON/OFF switch
Electrical interfaces
103
Wiring, Vitotronic 300, GW5B
Connection and Wiring Diagram
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
Main PCB low voltage
104
aVD
aVG
aVH
LON
S3
V1
V2
X
External hook-up
KM BUS participant
External hook-up
Connecting cable for data exchange (accessory)
Emissions test switch “S”
Fault indicator (red)
ON indicator (green)
Electrical interfaces
5693 973 - 05
Legend
!
Outdoor air temperature sensor (No function)
§
Boiler water temperature sensor
%A No function
%B No function
)
No function
aG
Flue gas temperature sensor
aJA Therm-Control temperature sensor
or
Return temperature sensor T1
aJB Return temperature sensor T2
Wiring, Vitotronic 300, GW5B
Vitotronic 300, GW5B & MW1B Installation and Service
Connection and Wiring Diagram (continued)
PCB 120V~
sÖA1
sA
sK
sL
fÖ
fA
gÖ
gSA1
aBÖ
5693 973 - 05
aBA
aBH
High temperature circuit pump
DHW circulation pump
DHW recirculation pump
Accessories pump
Power supply, 120V/60 Hz
Burner (call for heat)
Central fault message
Isolation valve
or
3-way mixing valve, primary store system (optional
accessory)
External connections, e.g. supplementary safety
equipment
Safety chain, potential free
Power supply for accessories
F1, F2
K1-K10
S1
X
Fuse/MCB
Relay
ON/OFF switch
Electrical interfaces
105
Wiring, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Connection and Wiring Diagram
Overview
106
A8
A10
A11
A12
X
PCB
LON communication module (accessory)
Power supply unit PCB
ON/OFF switch
Electrical interfaces
5693 973 - 05
Legend
A1
PCB, extension for heating circuits 2 and 3 with
mixing valve
A2
PCB low voltage
A3
PCB 120V~
A6
Programming unit
A7
Optolink PCB/emissions test switch
Wiring, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Connection and Wiring Diagram
(continued)
PCB 120V~
5693 973 - 05
Legend
sÖ
Heating circuit pump
sA
Circulation pump for DHW tank heating
(accessory)
sK
DHW recirculation pump (on site)
sL
Shunt pump or distribution pump (on site)
Power supply, 120V/60 Hz
Central fault message
Motor for 3-way mixing valve, primary store
system
abH
Power supply connection for accessories
F
Fuse
K1-K10 Relay
S1
ON/OFF switch
X
Electrical interfaces
fÖ
gÖ
gS
107
Wiring, Vitotronic 300-K
Connection and Wiring Diagram
Vitotronic 300, GW5B & MW1B Installation and Service
(continued)
PCB low voltage
)
aG
aJA
aJB
108
No function
No function
No function
Return temperature sensor T2
or
Temperature sensor primary store system
aVD
aVG
aVH
LON
S3
V1
V2
X
External hook-up
KM BUS participant
External hook-up
Connecting cable for data exchange (accessory)
Emissions test switch “S”
Fault indicator (red)
ON indicator (green)
Electrical interfaces
5693 973 - 05
Legend
!
Outside temperature sensor
?
Supply temperature sensor
%A DHW tank temperature sensor
%B DHW tank temperature sensor 2 for primary store
system)
Wiring, Vitotronic 300-K
Vitotronic 300, GW5B & MW1B Installation and Service
Connection and Wiring Diagram
(continued)
PCB, extension for heating circuits 2 and 3 with mixing valve
5693 973 - 05
Legend
?
Supply temperature sensors
sÖ
Heating circuit pumps
fÖ
Power supply
gS
Mixing valve motors
K1-K6 Relay
X
Electrical interfaces
109
Components
Vitotronic 300, GW5B & MW1B Installation and Service
Sensors
Boiler water, DHW tank, supply, return and room
temperature sensors
Note:
H The supply temperature sensor can be used as a
contact or immersion temperature sensor.
Note: The supply temperature sensor in the mixing
valve extension kit is a contact temperature
sensor.
H The room temperature sensor is connected at terminals
3 and 4 in the Vitotrol 300A.
Installation and service instructions,
Vitotronic 200-H
Resistance in k ohms
Viessmann NTC 10 kΩ (blue identification)
1.
Pull corresponding plug.
2.
Check the sensor resistance and compare it with the
curve.
3.
In the case of severe deviation, check the installation
and replace the sensor if required.
Temperature
Outside temperature sensor
Resistance in k ohms
Viessmann NTC 10 kΩ (blue identification)
1.
Pull plug !.
2.
Check the sensor resistance across plug terminals
“1” and “2” and compare with the curve.
3.
If the results are very different from the curve,
disconnect the wires from the sensor and repeat the
test on the sensor.
4.
Depending on the result, replace the lead or the
outside temperature sensor.
110
5693 973 - 05
Temperature
Components
Vitotronic 300, GW5B & MW1B Installation and Service
Boiler Coding Card
Boiler
Boiler coding card
Display in brief scan
Part no.
Vitocrossal 200, type CM2
1042
7841113
Mixing Valve Motor Kit
Components:
H Mixing valve motor (not for flanged mixing valve)
H Connecting plug for the heating circuit pump
H Supply temperature sensor as contact temperature
sensor for measuring the supply temperature, with
connecting cable 19 ft. (5.8 m) long.
Changing the rotational direction (if required)
1.
Insert 3-pin plug A in the mixing valve motor rotated
through 180°.
2.
Check the rotational direction.
Manual mixing valve adjustment
Lift the motor lever, unhook the mixing valve handle
and pull plug A.
Specification mixing valve motor
Rated voltage
Rated frequency
Power consumption
120V~
60 Hz
4W
Permissible ambient temperature
Mixing
valve “Open”
Mixing valve “Closed”
5693 973 - 05
Legend
A Mixing valve plug
B Field wiring
C Connection to mixing valve adaptor
H during operation
32 to 104° F (0 to +40° C)
H during storage and
transport
-4 to +149° F (–20 to +65° C)
111
Components
Vitotronic 300, GW5B & MW1B Installation and Service
Extension EA1 Accessory (optional)
Duration of the heating program changeover
Contact constantly closed:
The changeover is active as long as the contact
is closed.
Contact only closed briefly via pushbutton:
The changeover is enabled for the time selected in
coding address “F2” in the “Heating circuit...” group.
DHW recirculation pump runtime for brief operation
The DHW recirculation pump can be started outside the
times when it is enabled according to the time program.
Digital data inputs DE1 to DE3
Functions:
External heating program changeover,
separate for heating circuits 1 to 3
External blocking
External blocking with fault message input
External demand with minimum boiler water
temperature
Fault message input
Brief operation of the DHW recirculation pump
When connecting external contacts, observe the
requirements of safety category II, i.e. 8.0 mm air-gap
and creep path or maintain a 2.0 mm insulation thickness
against ‘live’ parts.
Input function assignment
Select the input functions by means of the following
codes in the “General” group at the boiler control unit:
DE1: Coding address “5D”
DE2: Coding address “5E”
DE3: Coding address “5F”
Assigning the heating program changeover
function to the heating circuits
The allocation of the heating program changeover to the
relevant heating circuit is selected via coding address
“D8” in the “Heating circuit...” group:
Code “D8:1”: Changeover via input DE1
Code “D8:2”: Changeover via input DE2
Code “D8:3”: Changeover via input DE3
The DHW recirculation pump is started by closing the
contact at DE1, DE2 or DE3 by means of a pushbutton.
The runtime is adjusted via coding address “3D” in the
“General” group.
Analogue input 0–10V
The 0–10V hook-up provides an additional set boiler
water temperature:
0–1V Is taken as “no default for set boiler water
temperature”.
Note: Ensure DC separation between the LV output
and the earth conductor of the onsite voltage
source.
Coding address “1E” in the “General” group:
“1E:0” ≙ temperature demand adjustable in the
range from 32 to 212° F (0 to 100° C) 1V ≙ 50° F
(10° C) set value change 10V ≙ 212° F (100° C)
set value change
“1E:1” ≙ temperature demand adjustable in the
range from 86 to 248° F (30 to 120° C) 1V ≙ 86° F
(30° C) set value change 10V ≙ 248° F (120° C)
set value change
Output aBJ
Connection of a central fault messaging facility or
signalling reduced mode (reduction of the heating
circuit pump speed).
Select the function of output aBJ via coding address
“5C” in the “General” group.
Refer to the EA1 module Installation Instructions
112
5693 973 - 05
The effect of the heating program changeover is selected
via coding address “D5” in the “Heating circuit...” group.
Vitotronic 300, GW5B & MW1B Installation and Service
Parts Lists
Parts List Vitotronic 300, GW5B
Ordering Replacement Parts:
Please provide model no. from rating plate and serial no.
when ordering replacement parts. Order replacement
components from your Viessmann distributor.
Parts
0001
0008
0011
0013
0014
0015
0016
0018
0019
0020
0021
0022
0023
0024
0025
0037
0038
0040
0042
0045
0048
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0049
0050
0051
0052
0054
0056
0057
0058
0074
0080
0081
0092
0100
0101
0102
0103
0104
0105
0106
0108
0109
Hinge
Supporting stay
Safety valve with wiring
Casing front with frame
PCB cover
Front flap
Casing, rear section
Programming unit
Fascia, left
Fascia, right
Ribbon cable, 14-pole
Connecting cable for extension for
heating circuit 2 and 3 with mixing valve
Connecting cable,
emissions test switch
Fuse holder cap for control fuse
Fuse holder for control fuse
Emissions test switch, single-pole
ON/OFF switch, 2-pole
Outside temperature sensor !
Temperature sensor with plug
Contact temperature sensor with plug
(supply temperature sensor)
PCB, extension heating circuits 2 and 3
with cover
PCB, low voltage
PCB
PCBs, Optolink and emissions test switch
PCB 120V~
Power supply unit PCB
LON communication module
LON cable
Terminator (2 pieces)
Connecting cable
Installation and service instructions
Operating instructions
Fuse 6.3 A/250V~, slow
Plug for LV (7 pieces)
Plug for pumps (3 pieces)
Plug gS (3 pieces)
Plug aBH (3 pieces)
Power plug fÖ (3 pieces)
Plug aBÖ
Plug gÖ (3 pieces)
Plug aVD, aVG, aVH (3-pole)
Burner plug (3-pole)
113
Parts Lists
Vitotronic 300, GW5B & MW1B Installation and Service
Parts List Vitotronic 300-K
Ordering parts
The following information is required:
H Serial no. (see type plate A)
H Position number of the part (from this parts list)
Obtain standard parts from your local supplier.
Parts
0013
0014
0015
0016
0018
0019
0020
0021
0022
0023
0024
0025
0037
0038
0040
0042
0045
0049
0048
0050
0051
0052
0054
0056
0057
0058
0074
0080
0081
0092
0100
0101
0102
0103
0104
0106
0108
114
Hinge
Supporting stay
Safety valve with wiring
PCB cover, extension for heating
circuits 2 and 3 with mixing valve
Casing front with frame
PCB cover
Front flap
Rear section of enclosure
Programming unit
Fascia left
Fascia right
Ribbon cable, 10-pole
Connecting cable for extension for heating
circuits 2 and 3 with mixing valve
Connecting cable, emissions test switch
Fuse holder cap for control fuse
Fuse holder for control fuse
Emissions test switch, single-pole
ON/OFF switch, 2-pole
Outside temperature sensor !
Temperature sensor with plug
Contact temperature sensor with plug
(supply temperature sensor)
PCB low voltage
Extension for heating circuits 2 and 3
with mixing valve
PCB
PCBs, Optolink and emissions test switch
PCB 120V~
Power supply unit PCB
LON communication module
LON connecting cable
Terminator (2 pce)
Connecting cable, 16-pole
Installation and service instructions
Operating instructions
Fuse 6.3 A (slow)/250V~
Plug for LV (7 pce)
Plug for pumps (3 pce)
Plug gS (3 pce)
Plug aBH (3 pce)
Power supply plug fÖ (3 pce)
Plug gÖ (3 pce)
Plug aVD, aVG, aVH (3-pole)
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0001
0008
0011
0012
Specification
Vitotronic 300, GW5B & MW1B Installation and Service
Specification Vitotronic 300, GW5B
Rated voltage
120V~
Rated frequency
60 Hz
Rated current
2 x 6A~
Power consumption
10 W
Permissible ambient temperature:
During operation
32 to 104° F (0 to +40° C)
Installation in living spaces or boiler rooms (standard
ambient conditions)
During storage and transport -4 to 149° F (−20 to +65° C)
Rated relay output breaking capacity at 120V~
sÖ
Primary pump, primary store system
or
Circulation pump – flue gas/water heat exchanger 2A~*1
sA
Circulation pump for DHW tank heating
2A~*1
sL
Shunt pump or boiler circuit pump
2A~*1
gÖ
Central fault message
2A~*1
gS
Isolation valve
Mixing valve motor, return temperature raising facility
or
Motor, 3-way mixing valve, primary store system 0.1A~*1
fA
Burner
3A~
*1
Total max. 6A~ (shared between all 120V outputs)
Specification Vitotronic 300-K
Rated voltage
Rated frequency
Rated current
Power consumption
Permiss. ambient temperature
H During operation
120V~
60 Hz
6A
10 W
32 to 104° F (0 to +40° C)
Installation in living spaces or boiler rooms (standard ambient conditions)
H During storage and transport -4 to 149° F (−20 to +65° C)
Rated relay output breaking capacity at 120V~
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sÖ Heating circuit pump
or
Primary pump, primary store system
sA Circulation pump for DHW tank heating
sK DHW recirculation pump
sL Shunt pump/distribution pump
gÖ Central fault message
gS Mixing valve motor, extension kit, mixing valve
or
Motor, 3-way mixing valve,
return temperature control
or
Motor, 3-way mixing valve,
primary store system
*2
2A~*2
2A~*2
2A~*2
2A~*2
2A~*2
0.1A~*2
Total max. 6A~ (shared between all 120V outputs)
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Technical information subject to change without notice.
Printed on environmentally friendly
(recycled and recyclable) paper.
Vitotronic 300, GW5B and MW1B Installation and Service