Checking The Plate Heat Exchanger; Mixer Extension Kit; Checking The Setting Of Rotary Selector S1; Checking The Rotational Direction Of The Mixer Motor - Viessmann Vitosorp 200-F Installation Instructions For Contractors

Checking the plate heat exchanger

Fig. 70
Drain the heating water side of the heating system
(secondary circuit and process circuit, see page 104).
1. Cut through the cable ties.
2. Release 4 clips and pull the plate heat exchanger
from the pipes.
Note
During and after removal, small amounts of water
may trickle from the plate heat exchanger.

Mixer extension kit

Checking the setting of rotary selector S1

The rotary selector on the PCB of the extension kit
defines the assignment to the relevant heating circuit.

Checking the rotational direction of the mixer motor

After being switched on, the appliance performs a self-
test. During this, the mixer is opened and closed again.
Note
The mixer motor can also be started via the actuator
test (see chapter "Checking outputs").
2.
1.
3. Check all 4 connections for contamination and
scaling. Replace plate heat exchanger if required.
4. Install in reverse order using new gaskets.
5. Fill and vent the heating system (see pages 41
and 44).
Heating circuit
Heating circuit with mixer M2
(heating circuit 2)
Heating circuit with mixer M3
(heating circuit 3)
Observe the rotational direction of the mixer motor dur-
ing its self-test.
Then manually set the mixer to "OPEN".
Note
The flow temperature sensor must now capture a
higher temperature. If the temperature drops, either
the motor is turning in the wrong direction or the mixer
insert is incorrectly fitted.
Mixer installation instructions
Maintenance
Rotary selector S1
setting
2
4
111