Viessmann EA1 Guide rapide

5443233 GB 3/2020 Dispose after installation.

Installation and service

instructions

for contractors

VIESMANN

EA1 extension

Function extension

Safety instructions

Please follow these safety instructions closely to prevent accidents

and material losses.

Safety instructions explained

Danger

This symbol warns against the

risk of injury.

!Please note

This symbol warns against the

risk of material losses and envi-

ronmental pollution.

Note

Details identified by the word "Note"

contain additional information.

Installation, commissioning, inspection,

maintenance and repairs must only be

carried out by an authorised, competent

person (heating engineer/installation

contractor).

Before working on the appliance/heat-

ing system, isolate it from the power

supply (e.g. by removing a separate

mains fuse or by means of a mains iso-

lator) and safeguard against unauthor-

ised reconnection.

When using gas as fuel, also close the

main gas shut-off valve and safeguard

against unintentional reopening.

Check for gas tightness after installa-

tion.

Wear suitable personal protective

equipment when carrying out any work.

Repairing components that fulfil a

safety function can compromise the

safe operation of the system.

For replacements, use only original

spare parts supplied or approved by

Viessmann.

Install the components with new gas-

kets.

Please dispose of packaging waste in

line with statutory regulations.

Disposal of packaging

5443233

Sym-

bol

Meaning

Reference to other document

containing further information

Step in a diagram:

The numbers correspond to

the order in which the steps

are carried out.

Warning of material losses and

environmental pollution

Live electrical area

Pay particular attention.

■ Component must audibly

click into place.

■ Acoustic signal

■ Fit new component.

■ In conjunction with a tool:

Clean the surface.

Dispose of component correct-

ly.

Dispose of component at a

suitable collection point. Do

not dispose of component in

domestic waste.

Symbols

5443233

Spare parts lists

Information about spare parts can be

found at www.viessmann.com/etapp

or in the Viessmann spare part app.

Application

Note

In the following, the different Vitotronic

control units are designated as group

A, B or C.

To find out the control unit designation,

please refer to the type plate on the

control unit or heat generator.

Group A

■ Vitotronic 100, type HC1B

■ Vitotronic 100, type HC2B

■ Vitotronic 100, type KC2B

■ Vitotronic 100, type KC4B

■ Vitotronic 100, type GC7B

■ Vitotronic 200, type HO1B

■ Vitotronic 200, type HO1C

■ Vitotronic 200, type KO1B

■ Vitotronic 200, type KO2B

■ Vitotronic 200, type KW6B

■ Vitotronic 200, type HO1D

■ Vitotronic 200, type HO2B

■ Vitotronic 200, type GW7B

Group B

■ Vitotronic 100, type GC1B

■ Vitotronic 100, type GC4B

■ Vitotronic 200, type GW1B

■ Vitotronic 200-H, type HK1B

■ Vitotronic 200-H, type HK3B

■ Vitotronic 300, type GW2B

■ Vitotronic 300, type GW4B

■ Vitotronic 300-K, type MW1B

■ Vitotronic 300-K, type MW2B

Group C

■ Vitotronic 200, type WO1C

Group D

■ Vitotronic 100, type CC1E, CC1I

■ Vitotronic 200, type CO1E, CO1I

■ Vitotronic 300, type CM1E, CM1I

Symbols (cont.)

5443233

Overview of electrical connections

aVG

LNL

fÖ

aBJ

[{S

DE [{{]

0-10V f-]

[{A

DE [{D

+ -5 61 2 1 2 3 4

AEA1 extension

DE1 Digital input 1

DE2 Digital input 2

DE3 Digital input 3

0 - 10 V 0 - 10 V input

fÖ Power supply

fÖ A Power supply for additional

accessories

aBJ Central fault message facility/

feed pump/DHW circulation

pump (floating switching con-

tact)

aVG KM-BUS to the control unit

Wall mounting

5443233

!Please note

Electronic assemblies can be

damaged by electrostatic loads.

Before beginning work, touch

earthed objects, such as heating

or water pipes, to discharge

static loads.

Note

Apply strain relief to on-site cables.

Seal any unnecessary apertures with

cable grommets (not cut open).

Connecting digital inputs (groups A and B)

The following functions can alterna-

tively be connected:

■ External operating program change-

over for each heating circuit

■ External blocking

■ External blocking with central fault

message input

■ External demand with set flow tem-

perature

■ Central fault message

■ Brief operation of the DHW circula-

tion pump

This function is enabled when the input

is closed.

External contacts must be potential-

free. When connecting external con-

tacts, observe the requirements of pro-

tection class II, i.e. 8.0 mm air and

creep path or 2.0 mm insulation thick-

ness to live parts.

Function assignment of inputs DE1 to DE3

Select the input functions by means of

the codes on the heat generator control

unit:

Digital input Control unit coding address

Group A Group B

DE1 3A 5d

DE2 3b 5E

DE3 3C 5F

Depending on the function and the digi-

tal input selected for it, set the following

codes at the Vitotronic control unit:

Overview of electrical connections (cont.)

5443233

Function Setting at relevant coding ad-

dress

No function 0

Operating program changeover 1

External demand with set flow temperature 2

External blocking 3

External blocking with fault message input 4

Fault message input 5

Brief operation, DHW circulation pump 6

Complete description of the coding

addresses:

Control unit or heat generator

installation and service instruc-

tions

Assigning the operating program

changeover function to the heating

circuits

Assign the operating program change-

over function for the relevant heating

circuit via coding address d8 at the con-

trol unit:

■ Changeover via input DE1:

Code d8:1

■ Changeover via input DE2:

Code d8:2

■ Changeover via input DE3:

Code d8:3

■ Select the effect of the operating pro-

gram changeover via coding

address d5.

■ Set the duration of the changeover

via coding address F2.

Effect of the "External blocking"

function on the pumps (group A)

■ Select the effect on the internal boiler

circulation pump (Vitotronic, type

HC1B, HC2B, HO1B and HO1C) in

coding address 3E.

■ Select the effect on the relevant heat-

ing circuit pump in coding

address d6.

■ Select the effect on the circulation

pump for cylinder heating (Vitotronic,

group A) in coding address 5E.

Effect of the "External demand"

function on the pumps (group A)

■ Select the effect on the internal boiler

circulation pump (Vitotronic, type

HC1B, HC2B, HO1B and HO1C) in

coding address 3F.

■ Select the effect on the relevant heat-

ing circuit pump in coding

address d7.

■ Select the effect on the circulation

pump for cylinder heating (Vitotronic,

group A) in coding address 5F.

Connecting digital inputs (groups A and B) (cont.)

5443233

Set flow temperature for external

demand

■ Select the set flow temperature in

coding address 9b.

Connecting digital inputs (group C)

Function assignment of inputs DE1 to DE3

Input functions are permanently

assigned for the Vitotronic 200, type

WO1C. See the following table:

Input Function

DE1 Swimming pool heating de-

mand

DE2 External blocking

DE3 External demand/external

changeover of operating

status

External contacts must be potential-

free. When connecting external con-

tacts, observe the requirements of pro-

tection class II, i.e. 8.0 mm air and

creep path or 2.0 mm insulation thick-

ness to live parts.

Further details:

Vitotronic 200, type WO1C serv-

ice instructions

Connecting digital inputs (group D)

The following functions can alterna-

tively be connected:

■ External operating program change-

over for each heating circuit

■ External blocking

■ External blocking with central fault

message input

■ External demand with set flow tem-

perature

■ Central fault message

■ Brief operation of the DHW circula-

tion pump

This function is enabled when the input

is closed.

External contacts must be potential-

free. When connecting external con-

tacts, observe the requirements of pro-

tection class II, i.e. 8.0 mm air and

creep path or 2.0 mm insulation thick-

ness to live parts.

Connecting digital inputs (groups A and B) (cont.)

5443233

Function assignment of inputs DE1 to DE3

Select the input functions by means of

the parameter settings on the heat gen-

erator control unit:

Digital input Control unit parameters (General

group)

DE1 42

DE2 43

DE3 44

Depending on the function and the digi-

tal input selected for it, set the following

parameters at the Vitotronic control

unit:

Function Settings at parameters 42, 43,

44 (General group)

No function 0

Operating program changeover 1

External demand with set flow temperature 2

External blocking 3

External blocking with fault message input 4

Fault message input 5

Brief operation, DHW circulation pump 6

Complete description of the parame-

ters:

Control unit or heat generator

installation and service instruc-

tions

Assigning the operating program

changeover function to the heating

circuits

Select assignment of the operating pro-

gram changeover function for the rele-

vant heating circuit via parameter 20

(Heating circuit group) at the control

unit:

■ Changeover via input DE1: Parame-

ter 20:1

■ Changeover via input DE2: Parame-

ter 20:2

■ Changeover via input DE3: Parame-

ter 20:3

Connecting digital inputs (group D) (cont.)

5443233

■ Select the effect of the operating pro-

gram changeover via parameter 1F

(Heating circuit group).

■ Set the duration of the changeover

via parameter 24 (Heating circuit

group).

Set flow temperature for external

demand

■ Select the set flow temperature in

parameter 0B (General group).

Connecting a circulation pump or a fault message facility

Connection aBJ is floating.

The following components can be con-

nected to plug aBJ:

Groups A, B and D:

■ Feed pump to substation

■ DHW circulation pump

■ Fault message facility

? ?

fÖaBJ

230 V~

f-]

ACirculation pump or fault message

facility 230 V

Connecting digital inputs (group D) (cont.)

5443233

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