Viessmann VITOCAL 300-A Installation And Service Instructions Manual page 18

Preparing for installation
Internal heat pump, type AWC-I-M
D Two electrical connecting cables,
wired ready to plug in (5, 15 or
30 m):
Control cable 230 V~, required
cable length inside the heat pump:
1.85 m
LV cable < 42 V, required cable
length inside the heat pump:
1.70 m
E Compressor/fan power supply
(230 V/50 Hz; 1/N/PE)
Required cable length inside the
heat pump: 2.50 m
Internal components
A Heating water return
B Secondary return temperature
sensor
18
(cont.)
F Instantaneous heating water hea-
ter power supply
(230 V/50 Hz; 1/N/PE; max. out-
put 9 kW)
Required cable length inside the
heat pump: 2.50 m
G Instantaneous heating water hea-
ter (accessory)
H Heat pump type AWC-I-M
C Condenser
D LPG temperature sensor
E Safety high pressure switch
F Electronic expansion valve (EEV)
G Evaporator
H Air outlet temperature sensor
K Air inlet temperature sensor
L Low pressure sensor
M Suction gas temperature sensor
N Digital scroll valve
O Compressor
P High pressure sensor
R Hot gas temperature sensor
S Four-way diverter valve
T Instantaneous heating water hea-
ter (accessory)
U Secondary heating circuit pump
V Secondary flow temperature sen-
sor
W DHW cylinder flow
X Three-way diverter valve
y Heating water flow