Overview Of Internal Components - Viessmann Vitocal 300-A Installation And Service Instructions Manual

Overview of internal components

A
Y
X
W
V
U
Fig. 51
Low pressure sensor
A
Electronic expansion valve for suction gas super-
B
heating (AHX)
Electronic expansion valve for refrigerant collector
C
level control (PHX)
Filter dryer
D
Manual air vent valve
E
4-way diverter valve
F
G Safety high pressure switch
Schrader valve, high pressure side
H
High pressure sensor
K
Secondary circuit return temperature sensor
L
(Pt500A)
Drain valve
M
Flow switch
N
B C D
T S R Q P
E F
O
Liquid separator
O
Liquid gas temperature sensor (downstream of
P
condenser) (NTC 10 k
Suction gas temperature sensor (downstream of
Q
evaporator) (NTC 10 k
Filter dryer
R
Schrader valve, low pressure side
S
Suction gas temperature sensor (upstream of com-
T
pressor) (NTC 10 k )
Ω
Refrigerant collector
U
Intermediate injection solenoid valve
V
Liquid gas temperature sensor (downstream of
W
refrigerant collector) (NTC 10 k
Schrader valve, high pressure side
X
Refrigerant collector fill level sensor
Y
Maintenance
G
H
K
N M L
)
Ω
)
Ω
)
Ω
65