Viessmann Vitocal 300-G Installation And Service Instructions Manual page 15

Primary circuit, type BW 301.A, BWC 301.A...
Required equipment
Pos. Description
1
Heat pump
2 Heat pump control unit
qT Primary pump
wP
Brine accessory pack
wQ Pressure switch, primary circuit
wW Brine distributor for geothermal probes/collectors
wU
Geothermal probes/collectors
Electrical installation scheme
For an overview of the electrical connec-
tions and more information on the PCBs,
see from page 72 and the separate
service instructions, Vitotronic 200 heat
pump control unit.
2
X3.9
X1.
X3.8
Preparing for installation
(cont.)
230 V; 0.15 A
21
15