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Fig. 13

Note

The rotary switch can be found on the PCB of the elec-

tronics module.

Set rotary switch S1.

System with one heating circuit with mixer:

■

Heating circuit 2 with mixer: Rotary switch on exten-

sion kit to 1

■

EM-P1 extension (heating circuit 1 without mixer):

Rotary switch to 2

System with several heating circuits with mixer:

■

Heating circuit 2 with mixer: Rotary switch on exten-

sion kit to 1

■

Heating circuit 3 with mixer: Rotary switch on exten-

sion kit to 2

■

Heating circuit 4 with mixer: Rotary switch on exten-

sion kit to 3

■

EM-P1 extension (heating circuit 1 without mixer):

Rotary switch to 4

Connecting the PlusBus to the heat generator

1 2

jF jF

Fig. 14

Extension (electronics module)

PlusBus to heat generator

Note

If making the connection to the heat generator with an

external plug for the bus connection, disconnect plug

and connect the wires directly.

Heat generator installation and service instruc-

tions

Installation sequence

Rotary switch S1 for subscriber number addressing

5838001

Installation

Viessmann EM-M1 User Manual

Questions and Answers: