Viessmann VITOFLEX 300-UF Mode d'emploi
Service instructions
for contractors
Viesmann
Export operating data via Modbus – Ecocontrol
for Ecocontrol boiler control unit
Export operating data via Modbus – Ecocontrol
5836373 GB 10/2018 Please keep safe.
2
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for quali-
fied contractors.
■Work on the refrigerant circuit may only be carried
out by authorised refrigeration engineers.
■Work on electrical equipment may only be carried
out by a qualified electrician.
■The system must be commissioned by the system
installer or a qualified person authorised by the
installer.
Regulations to be observed
■National installation regulations
■Statutory regulations for the prevention of accidents
■Statutory regulations for environmental protection
■Codes of practice of the relevant trade associations
■Relevant country-specific safety regulations
Safety instructions for working on the system
Working on the system
■Isolate the system from the power supply, e.g. by
removing the separate fuse or by means of a mains
isolator, and check that it is no longer live.
Note
In addition to the control circuit there may be several
power circuits.
Danger
Contact with live components can result in
severe injuries. Some components on PCBs
remain live even after the power supply has
been switched off.
Prior to removing covers from the appliances,
wait at least 4 minutes until the voltage has
completely dropped out.
■Safeguard the system against reconnection.
■Wear suitable personal protective equipment when
carrying out any work.
Danger
Hot surfaces and fluids can lead to burns or
scalding.
■Before maintenance and service work, switch
OFF the appliance and let it cool down.
■Never touch hot surfaces on the appliance, fit-
tings or pipework.
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a safety func-
tion can compromise the safe operation of the
system.
Replace faulty components only with genuine
Viessmann spare parts.
Auxiliary components, spare and wearing parts
!Please note
Spare and wearing parts that have not been tes-
ted together with the system can compromise its
function. Installing non-authorised components
and making non-approved modifications or con-
versions can compromise safety and may inva-
lidate our warranty.
For replacements, use only original spare parts
supplied or approved by Viessmann.
Safety instructions
Safety instructions
5836373
3
Safety instructions for operating the system
What to do if water escapes from the appliance
Danger
If water escapes from the appliance there is a
risk of electrocution.
Switch OFF the heating system at the external
isolator (e.g. fuse box, domestic distribution
board).
Danger
If water escapes from the appliance there is a
risk of scalding.
Never touch hot heating water.
Safety instructions
Safety instructions (cont.)
5836373
4
1. Information Description ............................................................................................. 5
Boiler control unit Modbus address ....................................................... 5
Modbus function codes .......................................................................... 5
2. Vitoflex 300-UF data point
list
Vitoflex 300-UF set values ..................................................................... 6
Vitoflex 300-UF actual values ................................................................ 6
Status (data point 173) .......................................................................... 7
Faults 1 (data point 399 – 400) .............................................................. 7
Faults 2 (data point 401 – 402) .............................................................. 8
Warnings 1 (data point 403 – 404) ........................................................ 8
Bit pattern 1 (data point 437 – 438) ....................................................... 9
Bit pattern 2 (data point 439 – 440) ....................................................... 10
Heating water buffer cylinder, actual values .......................................... 10
3. Vitoflex 300-RF data point
list
Vitoflex 300-RF set values ..................................................................... 11
Vitoflex 300-RF actual values ................................................................ 11
Status (data point 173) .......................................................................... 12
Faults 1 (data point 399 – 400) .............................................................. 12
Faults 2 (data point 401 – 402) .............................................................. 12
Warnings 1 (data point 403 – 404) ........................................................ 13
Bit pattern 1 (data point 437 – 438) ....................................................... 13
Bit pattern 2 (data point 439 – 440) ....................................................... 14
Heating water buffer cylinder, actual values .......................................... 15
4. Commissioning/service
reports
Change log ............................................................................................ 16
Index
Index
5836373
5
The Ecocontrol boiler control unit can be extended with
an optional Modbus module. This extension module
enables data communication between the boiler con-
trol unit and a higher ranking control unit via a TCP/IP
interface.
For a detailed description of the Modbus protocol, see
www.modbus.org.
Boiler control unit Modbus address
The IP address of the boiler control unit can be set at
the programming unit.
Factory settings
IP address 172.168.50.5
Subnet mask 255.255.255.0
Modbus function codes
Modbus distinguishes between several function codes.
The boiler control unit can only process function
codes 03 and 16 (register only, no coils).
Function code Description
0x03 Read Holding Registers Reading one or more registers
0x16 Write Single Register Writing one register
Note
Depending on the system configuration, not all data
points may be available.
Information
Description
5836373
6
Data
point
number
Data point Resolution Minimum val-
ue
Maximum
value
Length
0 Flow temperature 0.1 ºC 750 950 2 bytes
1 Return temperature 0.1 ºC 650 800 2 bytes
2 Residual oxygen content, flue gas 0.1 % 40 180 2 bytes
Vitoflex 300-UF actual values
Data point
number
Data point Resolution Length
151 Flow temperature 0.1 ºC 2 bytes
152 Flow temperature
(calculated)
0.1 ºC 2 bytes
153 Return temperature 0.1 ºC 2 bytes
154 Return temperature
(calculated)
0.1 ºC 2 bytes
156 Valve opening for return temperature raising 0.1 % 2 bytes
157 Flue gas temperature 0.1 ºC 2 bytes
158 Residual oxygen content 0.1 % 2 bytes
159 Residual oxygen content
(calculated)
0.1 % 2 bytes
160 Feed temperature 0.1 ºC 2 bytes
161 Speed, flue gas fan 0.1 % 2 bytes
163 Boiler output 0.1 % 2 bytes
164 Default output 0.1 % 2 bytes
167 Internal use 0.1 % 2 bytes
168 Internal use 0.1 % 2 bytes
169 Speed, feed 0.1 % 2 bytes
173 Status See page 7 2 bytes
174 Hours run, load 1 h 2 bytes
175 Software version 0.00 2 bytes
177 Not assigned 1 h 2 bytes
186 Recirculation damper 0.1 % 2 bytes
187 Fresh air damper 0.1 % 2 bytes
188 Hours run, maintaining 1 h 2 bytes
189 Hours run, standby 1 h 2 bytes
190 Speed, secondary air fan 0.1 % 2 bytes
191 Speed, secondary air fan
(calculated set value)
0.1 % 2 bytes
192 Speed, primary air fan 0.1 % 2 bytes
193 Speed, primary air fan
(calculated set value)
0.1 % 2 bytes
194 Speed, recirculation fan 0.1 % 2 bytes
195 Speed, recirculation fan
(calculated set value)
0.1 % 2 bytes
196 Vacuum pressure
(calculated set value)
0.1 Pa 2 bytes
Vitoflex 300-UF data point list
Vitoflex 300-UF set values
5836373
7
Data point
number
Data point Resolution Length
197 Combustion chamber temperature 1 ºC 2 bytes
199 Vacuum pressure 0.1 Pa 2 bytes
399 – 400 Faults 1 See page 7 4 bytes
401 – 402 Faults 2 See page 8 4 bytes
403 – 404 Warnings 1 See page 8 4 bytes
437 – 438 Bit pattern 1 See page 9 4 bytes
439 – 440 Bit pattern 2 See page 10 4 bytes
457 – 467 Heating water buffer cylinder
Data points for cylinder management
See page 10 2 bytes
468 – 473 Heating water buffer cylinder
Data points for boiler sequence control
See page 10 2 bytes
Status (data point 173)
Data point content
Value
Description
0 Boiler off
2 Flushing combustion chamber
3 Filling fuel hopper
4 Filling screw conveyor
5 Filling combustion chamber
6 Ignition
7 Load operation
8 Maintaining
9 Running screw conveyor until empty
10 Burnout
11 Emergency burnout
12 Emergency mode
13 Standby
15 Relay test
16 Cleaning
Faults 1 (data point 399 – 400)
Data point content
Bit
Description
1 High limit safety cut-out (STB)
2 Low water indicator
3 Water pressure
4 Inverter, flue gas fan
5 Repeating heat-up
6 Combustion chamber positive pressure
7 High limit safety cut-out, fuel store
Vitoflex 300-UF data point list
Vitoflex 300-UF actual values (cont.)
5836373
8
Data point content
Bit
Description
8 Flue gas damper sticking
9 – 32 Not assigned
Faults 2 (data point 401 – 402)
Data point content
Bit
Description
1 Emergency stop switch activated
2 Carbon monoxide (CO)/carbon dioxide (CO2)
3 Thermal contact, boiler circuit pump
4 Not assigned
5 Thermal contact, infeed grate
6 Overfilling/extinguishing
7 Level, extinguishing water container
8 Feed warm
9 Shut-off gate valve sticking
10 Rotational direction reversal, rotary lock valve
11 Light barrier, firebed
12 Material shortage
13 Light barrier, feed
14 – 17 Not assigned
18 Motor overload relay, feed
19 Burn-back
20 Limit switch, conveyor device
21 Motor overload relay, conveyor device
22 Frequency converter, recirculation fan
23 Frequency converter, primary air fan
24 Frequency converter, secondary air fan
25 – 32 Not assigned
Warnings 1 (data point 403 – 404)
Data point content
Bit
Description
1 Runtime, ash removal
2 Residual oxygen (O2) control
3 Feed warm
4 Return temperature raising, manual mode
5 Feed, manual mode
6 Not assigned
7 Internal use
8 CAN, charging
9 Not assigned
10 Motor overload relay, ash removal
Vitoflex 300-UF data point list
Faults 1 (data point 399 – 400) (cont.)
5836373
9
Data point content
Bit
Description
11 Internal use
12 Internal use
13 Combustion chamber door open
14 Bottom combustion chamber sensor faulty
15 Internal use
16 Ash container removed
17 Pressure switch, extinguishing water device
18 – 32 Internal use
Bit pattern 1 (data point 437 – 438)
Data point content
Bit
Description
1 Light barrier: Firebed
2 Internal use
3 Motor: Ash removal
4 Motor: Ascending ash screw conveyor
5 Motor: Infeed grate
6 Ignition: Fan
7 Ignition: Heating
8 Internal use
9 Motor: Flue gas fan
10 Internal use
11 Motor: Feed screw conveyor
12 Light barrier: Feed screw conveyor
13 Internal use
14 Thermal contact: Motor infeed grate
15 Float switch: Extinguishing water container
16 Light barrier: Ash removal
17 High limit safety cut-out: Boiler
18 Low water indicator
19 Water pressure
20 Motor overload relay: Ash removal
21 Motor overload relay: Conveyor devices
22 Limit switch: Conveyor devices
23 Internal use
24 Internal use
25 Temperature level, hydraulics, push floor
26 Temperature level, hydraulics, silo cover
27 Motor: Boiler circuit pump
28 Thermal contact: Boiler circuit pump
29 External demand
30 Motor: Control panel fan
Vitoflex 300-UF data point list
Warnings 1 (data point 403 – 404) (cont.)
5836373
10
Data point content
Bit
Description
31 Internal use
32 Motor: Recirculation fan/ventilation air fan
Bit pattern 2 (data point 439 – 440)
Data point content
Bit
Description
1 Motor: Primary air fan
2 Internal use
3 Motor: Secondary air fan
4 Internal use
5 Pressure switch, combustion chamber
6 Internal use
7 Power supply, Lambda probe transducer
8 High limit safety cut-out, fuel store
9 Internal use
10 Proximity switch, ash container
11 Boiler operating message
12 Emergency stop switch
13 Sensor: Carbon monoxide (CO)/carbon dioxide (CO2)
14 Switch, extinguishing water pressure
15 – 32 Not assigned
Heating water buffer cylinder, actual values
Data point
number
Data points for cylinder management Resolution Length
457 Heating water buffer cylinder sensor B 28.1 temperature 0.1 ºC 2 bytes
458 Heating water buffer cylinder sensor B 28.2 temperature 0.1 ºC 2 bytes
459 Heating water buffer cylinder sensor B 28.3 temperature 0.1 ºC 2 bytes
460 Heating water buffer cylinder sensor B 28.4 temperature 0.1 ºC 2 bytes
461 Heating water buffer cylinder sensor B 28.5 temperature 0.1 ºC 2 bytes
467 Outside temperature sensor 0.1 ºC 2 bytes
Data point
number
Data points for boiler sequence control Resolution Length
468 Heating water buffer cylinder sensor B 28.1 temperature 0.1 ºC 2 bytes
469 Heating water buffer cylinder sensor B 28.2 temperature 0.1 ºC 2 bytes
470 Heating water buffer cylinder sensor B 28.3 temperature 0.1 ºC 2 bytes
471 Heating water buffer cylinder sensor B 28.4 temperature 0.1 ºC 2 bytes
472 Heating water buffer cylinder sensor B 28.5 temperature 0.1 ºC 2 bytes
473 Outside temperature sensor 0.1 ºC 2 bytes
Vitoflex 300-UF data point list
Bit pattern 1 (data point 437 – 438) (cont.)
5836373
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