Viessmann Vitocal 242-S Installation And Service Instructions Manual page 13

System example, ID: 4605415_1202_02
Pos. Designation
Heat source
1 Internal unit, heat pump, Vitocal 242-S, type AWT-AC 241.A
2 Heat pump control unit Vitotronic 200, type WO1C
3 Outside temperature sensor ATS
4
Instantaneous heating water heater with switching module (integral)
5 3-way diverter valve "Heating/DHW heating" (integral)
6 Secondary pump (integral)
8
KM BUS distributor (accessories)
qW Safety assembly
qE Heating circuit expansion vessel
qT Flow switch
Primary circuit
wU Hot gas line
wI
Liquid line
wO External unit of the heat pump Vitocal 242-S
DHW heating with heat pump
eP DHW cylinder (integral)
eQ Cylinder temperature sensor STS (integral)
eU DHW circulation pump ZP (accessories)
DHW heating with a solar thermal system
rQ High limit safety cut-out (accessories)
rW Solar Divicon
rE Solar circuit pump
rR Collector temperature sensor KOL
rT Solar collector
rO Solar circuit expansion vessel
zP Heating water buffer cylinder
zQ Buffer temperature sensor PTS
zW System flow temperature sensor VTS
Preparing for installation
(cont.)
13