Viessmann Vitodens 200, Service Instructions Manual

Page: 45 / 116

45
Troubleshooting
Repairs
(cont.)
Extension kit for one heating circuit with mixer
Checking the rotational direction of mixer motor
A Switch for rotational direction
B Main ON/OFF switchĂ" 8 "
1. Switch OFF and restart the motor
at the main ON/OFF switch. The
device will carry out the following
self-test:
H close mixer (150Ăseconds)
H pump on (ă10Ăseconds)
H open mixer (ă10Ăseconds)
H close mixer (ă10Ăseconds)
Then normal control mode
recommences.
2. Note the rotational direction of the
mixer motor during the self-test.
Then set the mixer manually to
"Open".
The flow temperature sensor must
now sense a higher temperature.
If the temperature falls, either the
motor is turning in the wrong
direction or the mixer set is
incorrectly fitted.
Mixer installation
instructions
3. Adjust the rotational direction of
the mixer motor (if required).
H Switch positionĂI for the central
heating return from the l.h. side
(as delivered condition).
H Switch positionĂII for central
heating return from the r.h. side
DIP switchĂS
Ă
1.1
If an extension kit for a heating circuit
with mixer and a VitotronicĂ050 are
connected, the DIP switchĂS
Ă
1.1 on the
extension kit must be set to "OFF".
5692Ă485
G
B
1
0
I II
1
2
3
4
S1
ON