Rotary Switch S1; Connecting The Plusbus To The Heat Generator - Viessmann EM-S1 Installation And Service Instructions For Contractors

Installation sequence

Rotary switch S1

Fig. 3

Connecting the PlusBus to the heat generator

A
jF jF
1 2 3 4
Fig. 4
Extension (electronics module)
A
B PlusBus to heat generator
10
B
Set rotary switch S1 to 0 (factory setting is 1).
Note
The rotary switch can be found on the PCB of the elec-
tronics module.
Note
For connection to heat generators with external plug,
luster terminals or spring-loaded terminals for bus con-
nection, disconnect plug jF
directly.
Heat generator installation and service instruc-
tions
. Connect the wires