Viessmann Vitocal 300-G Installation And Service Instructions Manual page 45

System version 3 (type BW/WW)
Pos. Description
DHW heating with a cylinder primary system
eP Dual-mode DHW cylinder
eQ Cylinder temperature sensor, heat pump
eW DHW circulation pump
eE Two-way valve, normally closed
eR Flow limiter (Taco Setter)
eT Plate-type heat exchanger (e.g. Vitotrans 100)
eZ Cylinder primary pump
Solar DHW heating
rP Solar-Divicon with solar circuit pump and expansion vessel
rQ Vitosolic 100/200 (observe separate installation instructions)
rW Collector temperature sensor (Vitosolic standard delivery)
rE Solar collectors
rR Cylinder temperature sensor in the solar return (Vitosolic standard de-
livery)
rT High limit safety cut-out (option, see technical guide Vitosol)
Heating water buffer cylinder
tP Heating water buffer cylinder
tQ Heating water buffer cylinder temperature sensor
Heating circuit with mixer (M2)
zP Underfloor heating circuit with directly controlled mixer M2 (observe
DIP switch)
zQ Vitotrol 200 remote control for heating circuit M2; for connection of se-
parate room temperature sensor, see Vitotrol installation instructions;
observe DIP switch
zW Overflow valve, heating circuit M2
zE Flow temperature sensor heating circuit M2
zR Temperature limiter as maximum limiter for underfloor heating systems
zT Temperature sensor of the natural cooling mixer
zZ Motor for three-way mixer, heating circuit M2
zU Heating circuit pump M2 (max. 100 W)
Natural cooling function (NC)
uP NC-Box with mixer
uQ Primary cooling circuit pump (contained in the NC-Box)
uW Secondary cooling circuit pump (contained in the NC-Box)
uE Contact humidistat
Direct heating circuit (A1)
iP Radiator heating circuit A1
iQ Vitotrol 200 remote control for heating circuit A1, for connection of se-
parate room temperature sensor, see Vitotrol installation instructions;
observe DIP switch
iW Overflow heating circuit A1
Preparing for installation
(cont.)
45