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.

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

5836373

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

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

5836373

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

Data

point

number

Data point Resolution Minimum val-

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

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

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

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

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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