To Next Page

To Previous Page

5774 470 - 02

EA1 Extension Module Installation

Assigning the heating program changeover function to the

heating circuits

Assign the heating program changeover function for the

respective heating circuit via code d8 at the boiler control

unit:

H Changeover via input DE1: Code d8:1

H Changeover via input DE2: Code d8:2

H Changeover via input DE3: Code d8:3

H Select the effect of the heating program changeover

via code d5

H Set the duration of the changeover via code F2

Effect of the external blocking function on the pumps

H Select the effect on the internal boiler circulation pump

(Vitotronic, type H ...) with code 3E

H Select the effect on the respective heating circuit pump

with code d6

H Select the effect on the circulation pump for DHW tank

heating (Vitotronic, type H ...) with code 5E

Effect of the external demand function on the pumps

H Select the effect on the internal boiler circulation pump

(Vitotronic, type H ...) with code 3F

H Select the effect on the respective heating circuit pump

with code d7

H Select the effect on the circulation pump for DHW tank

heating (Vitotronic, type H ...) with code 5F

Set flow temperature for external demand

H The set flow temperature can be selected with code 9b

Runtime of the DHW recirculation pump

Set the runtime:

H Vitotronic, type H ...: Code 3d

H Vitotronic, type G ...: Code 12

Refer to the boiler Service Instructions

Connecting Digital Inputs (continued)

Connections

Viessmann EA1 User Manual

Other manuals for Viessmann EA1