Viessmann Vitocal 300-G Installation And Service Instructions Manual page 20

Preparing for installation
Primary circuit, type BW 301.A + BWS 301.A...
Equipment required
Pos. Description
1
Heat pump stage 1
2 Heat pump control unit
9 Heat pump stage 2
qT
Primary pump, heat pump stage 1
qZ Flow temperature sensor, primary circuit
qU Return temperature sensor, primary circuit
wP
Brine accessory pack
wQ Pressure switch, primary circuit
wW Brine distributor, geothermal probes/collectors
wT
Primary pump, heat pump stage 2
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.
211.1
X1.
X2.N
X1.
X2.N
X3.9
X1.
X3.8
20
2
224.2
F2
F3
(cont.)
200 W
M
UP
1~
200 W
M
UP
1~
230 V; 0.15 A
12
PT500
13
PT500
15
25
21
16
17