Viessmann VITOTRONIC 200 Service Instructions Manual page 112

Diagnosis
System overview
(cont.)
Meaning of the symbols and values
Column : Primary source
1
Line Symbol/value
A
0
B
7
D
3
E
L
Column 2 : Heat pump
Line Symbol/value
A
B
42
C
2
D
38
E
25
F
G
88
H
2
K
10
L
112
Outside temperature sensor
Adjusted outside temperature (long term average) in °C
Primary circuit flow tem-
perature: Heat pump brine
inlet temperature in °C
Primary circuit return tem-
perature: Heat pump brine
outlet temperature in °C
—
Primary source, brine
Primary source, solar air
absorber
Primary source, ice store
Primary source, coolant
buffer cylinder
Heat pump
Heating
Secondary circuit flow temperature
Stage of instantaneous heating water heater
Secondary circuit return temperature
Secondary pump output in %
Central heating
Central cooling
—
For heat pumps with out-
put control:
Compressor frequency in
Hz
Evaporator temperature
Primary pump output in % Fan rating in %
Air intake temperature in °C
Air outlet temperature in °C
Primary source, air
—
—
—
—
Heat pump/compressor 1
with 2-stage refrigerant
circuit
Defrost
Compressor output in %
—
—
—
—
Heat pump
Compressor frequency in
Hz
Fan speed in rpm