Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 33

Type awc-i-m, aw-o-m compact heat pump with electric drive, 230 v~
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External heat pump type AW-O-M
B Secondary return temperature
sensor
D LPG temperature sensor
E Safety high pressure switch
I Schrader valve, high pressure
side
J Schrader valve, low pressure side
L Low pressure sensor
Preparing for installation
(cont.)
M Suction gas temperature sensor
P High pressure sensor
R Hot gas temperature sensor
V Secondary flow temperature sen-
sor
1 Quick-acting air vent valve
2 Safety valve
33

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