Viessmann SDIO User Manual

10
Danger
Incorrect wiring can lead to serious injury from
electrical current and result in appliance dam-
age.
■
Route extra low voltage (ELV) leads < 42 V
and > 42 V/230 V~ cables separately.
■
Only strip the minimum of insulation from
cables as close as possible to the terminals
and bundle tightly to the corresponding termi-
nals.
■
Secure cables with cable ties.
SDIO/SM1A electronics module
% &aVG
[{]
PWM
L
?
N
L
?
N
sF fÖ
M
1~
/ aÖ
L
?
N
M
1~
sS
230 V∼
jF
aVG
KM-BUS
jF
PLUS-
BUS
50 Hz
F1 T 2 A
SDIO/SM1A
TS1 TS2 TS3 TS4
Fig. 1
%
Cylinder temperature sensor, NTC 10 kΩ (TS1,
standard delivery) with plug
%
&
Collector temperature sensor, NTC 20 kΩ (TS2,
standard delivery)
/
Temperature sensor, NTC 10 kΩ (TS3, standard
delivery)
aÖ
Temperature sensor, NTC 10 kΩ (TS4, standard
delivery)
sS
Transfer pump or 3-way diverter valve
sF
Solar circuit pump (only with PWM signal)
fÖ
Power supply
jF
PlusBus for connection to the HMU heat man-
agement unit, DIO electronics module or ADIO
electronics module
aVG
KM-BUS for connection to the Vitotronic boiler
control unit
PWM Solar circuit pump speed control
!
Please note
Electronic assemblies can be damaged by static
loads.
Before beginning work, touch an earthed object
such as a heating or water pipe to discharge any
static.
Note
Apply strain relief to on-site cables.
Seal any unnecessary apertures with cable grommets
(not cut open).
Installation sequence
Overview of electrical connections
6131981
Installation

Viessmann SDIO Specifications

General

Brand	Viessmann
Model	SDIO
Category	Control Unit
Language	English