Viessmann EA1 Installation And Service Instructions

7
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

Viessmann EA1 Specifications

General

Brand	Viessmann
Model	EA1
Category	Control Unit
Language	English