Viessmann VITOCAL 222-S Installation And Service Instructions Manual page 71

Overview of internal components: External unit
External unit 5 to 7 kW, type AWT/AWT-AC 221.A05/A07
B
A
Fig. 60
Fan
A
Heat exchanger (evaporator)
B
Temperature sensor, air intake, evaporator (OAT)
C
Evaporator temperature sensor (OMT)
D
4-way diverter valve
E
Electronic expansion valve (EEV)
F
(cont.)
C
Compressor head temperature sensor (CTT)
G
High pressure switch (pHi)
H
Liquid separator
K
Temperature sensor, refrigerant inlet, evaporator
L
(OCT)
Compressor
M
Maintenance
D
E
F
G
H
K
L
M
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