Refrigerant Circuit - Viessmann VITOTRONIC 200 Service Instructions Manual

Heat pump
(cont.)
4. "Runtime compressor" for single-stage heat
pump
5. Compressor hours run ("Runtime") can be scan-
ned with for every "Load class".
Runtime compressor
Ü
h
Load class
1
Runtime
Select with
Fig. 26

Refrigerant circuit

Note
■ For assignment of refrigerant circuit controllers to
heat pump types: See page 24.
For further information on refrigerant circuit control-
■
lers: See page 183.
Refrigerant circ controller
For heat pumps with an electronic expansion valve
and refrigerant circuit controller [2] or [6].
The following information can be called up:
■ Refrigerant circuit temperature and pressure values
■ Refrigerant circuit operating conditions
1. Service menu:
Press OK + simultaneously and hold for
å
approx. 4 s.
2. "Diagnosis"
3 4 5
?
230h
[2] / [6]
Load class assignment:
Load class Hours run at
1 T
Δ
2 25 K <
3 32 K <
4 41 K <
5 T
Δ
T Differential between evaporation and condensa-
Δ
V/K
tion temperature
3. "Refrigerant circuit"
4. "Refrigerant circ controller"
Notes
■ For some heat pumps, not all symbols and values
shown are displayed.
The symbols on the display are animated if the com-
■
ponents are operational (e.g. pumps).
■ The values shown are examples.
Diagnosis
T
∆
V/K
< 25 K
V/K
T < 32 K
Δ
V/K
T < 41 K
Δ
V/K
T < 50 K
Δ
V/K
50 K
>
V/K
137