Overview Of Possible System Schemes - Viessmann Vitocal 300-A Series Installation And Service Instructions Manual

Preparing for installation
External heat pump type AWO-M-AC 301.A
U Instantaneous heating water heater
control
Recommended cable: 5 x 1.5mm
V Power cable, instantaneous heating
water heater (if installed), max. out-
put 9 kW
Recommended cable:
230 V/50 Hz; 1/N/PE: 7 x 2.5 mm
W Two connecting cables, fully wired
(5, 15 or 30 m):
■ Control cable 230 V~
■ LV lead < 42 V
X Connection cables for further com-
ponents and functions (e.g. pumps,
sensors, fault messages etc.)

Overview of possible system schemes

The following table provides an overview of all possible system schemes.
System schemes are explained using system examples (from page 25).
24
Y Power cable for heat pump control
unit 230 V/50 Hz
2
Recommended cable: 3 x 1.5 mm
(5 x 1.5 mm
power supply utility)
Z Heat pump control unit
2
Required cable lengths:
■ For the heat pump control unit (wall
outlet centrally directly below the heat
pump control unit):
0.6 m from the wall outlet
■ Inside the heat pump (to the control
panel):
2.6 m from the top edge of the foun-
dations
(cont.)
2
with power-off by the
2