Overview Of Internal Components; Maintenance - Viessmann VITOCAL 300-G Installation And Service Instructions For Contractors

Overview of internal components

T6
Z
Y
F3
X
W
V
U
T
S
R
P
T7
O
N
Fig. 43
Oil separator
A
B Safety high pressure switch
High pressure sensor
C
Low pressure sensor
D
Low pressure Schrader valve
E
F Compressor
Electronic expansion valve
G
Filter
H
Evaporator
K
High limit safety cut-out, instantaneous heating
L
water heater
Primary circuit drain & fill valve
M
Instantaneous heating water heater
N
O Secondary circuit drain & fill valve
Drain valve, instantaneous heating water heater
P
Primary pump
R
Secondary pump
S
Secondary circuit air vent valves
T
Secondary circuit air vent valve on the DHW side
U
High pressure Schrader valve
V
Note regarding the temperature sensors
F.. Temperature sensor is connected to the controller
and sensor PCB.
T.. Temperature sensor is connected to EEV PCB.
A
T1
T2
B
C
D
T4
T5
E
F
G
H
T3
K
L
M
Primary circuit air vent valves
W
Secondary circuit air vent valve, condenser
X
Condenser
Y
3-way diverter valve "central heating/DHW heat-
Z
ing"
F3 Primary circuit return temperature sensor (Viess-
mann Pt500A)
T1 Secondary circuit flow temperature sensor
(NTC 10 k )
Ω
T2 Secondary circuit flow temperature sensor down-
stream of instantaneous heating water heater
(NTC 10 k )
Ω
T3 Secondary circuit return temperature sensor
(NTC 10 k )
Ω
T4 Suction gas temperature sensor (NTC 10 k
T5 Primary circuit flow temperature sensor
(NTC 10 k )
Ω
T6 Hot gas temperature sensor (NTC 10 k
T7 Liquid gas temperature sensor (NTC 10 k
"Vitotronic 200" service instructions

Maintenance

)
Ω
)
Ω
)
Ω
65