Viessmann Vitocal 300-G Installation And Service Instructions Manual page 37

System version 2 (type BW/WW)
Pos. Description
3 Compressor
Implement the compressor power supply with 5 x 2.5 mm
For information regarding the power connection, see page 89
On-site fuse protection
If a full wave soft starter is installed (see type plate), fuses must have
Z characteristics
4 Integral control unit (implement the control unit power supply with 3 x
2
1.5 mm ; on-site fuse protection
Integral three-way valve "heating/DHW" (only for type BWC)
5 Primary pump (max. 200 W)
6 Secondary pump, system flow (130 W)
7 Circulation pump for cylinder heating (only for type BW, max. 130 W)
8 Safety equipment block with safety assembly (already integrated in
type BWC/WWC)
9 Expansion vessel (accessory)
qP Outside temperature sensor
qW Geothermal probe/geothermal collector
qE Brine distributor for geothermal probes/collectors
qR Brine accessory pack
qT Brine pressure limiter (if no brine pressure limiter is used, always insert
the jumpers supplied across the connections, otherwise the heat pump
will fail to operate)
DHW heating
wP DHW cylinder
wQ Cylinder temperature sensor
wW Switching times, auxiliary output (e.g. DHW circulation pump)
Heating water buffer cylinder
eP Heating water buffer cylinder
eQ Buffer temperature sensor inside the heating water buffer cylinder
eW System flow temperature sensor
Active cooling function (AC)
qQ AC-Box (active cooling) with primary and secondary cooling circuit
pump and contact humidistat
rP Separate cooling circuit
rQ Room temperature sensor, separate cooling circuit (part no. 7408012)
rW Flow temperature sensor, separate cooling circuit
rE Cooling convector
rR Condensate drain
rT Circulation pump, separate cooling circuit
Heating circuit with mixer (M2)
tP Underfloor heating circuit M2
tQ Overflow valve
Preparing for installation
(cont.)
16 A)
2
37