Viessmann Vitotwin 300-W Installation And Service Instructions For Contractors page 27

Preparing for installation
Pos. Designation
2A
230 V∼ extension
2B
Junction box for sensors and accessories (low voltage)
3A Remote control unit FBE
3B Wireless base station FB
4
Outside temperature sensor ATS
5 Cylinder temperature sensor STS B3
6 Buffer temperature sensor PTSO B4, top
7 Buffer temperature sensor PTSU B42, bottom
8 Sensor for power demand function B41
9 Sub-mounting kit with 3/2-way valve
Solid fuel boiler
qP Vitoligno 100-S
qQ Boiler control unit
qW
Boiler water temperature sensor KTS
qE Flue gas temperature sensor AGS
qR Return temperature raising facility
qT Boiler circuit pump KKP
qZ Thermostatic control valve
qU Safety equipment block
qI Diaphragm expansion vessel
DHW heating
wP Vitocell mono mode DHW cylinder
wQ DHW circulation pump CP (electrical connection on site)
Heating water buffer
eP Heating water buffer cylinders
eQ
Vitosolic for buffer changeover
eW 3-way diverter valve (R1 on Vitosolic)
eE Temperature sensor (S1 on Vitosolic, collector temperature sensor)
eR
Temperature sensor (S2 on Vitosolic, collector temperature sensor)
rP Heating circuit 1 with mixer
rQ
Extension kit for one heating circuit with mixer with integral mixer motor
and
rW Flow temperature sensor heating circuit M1
rE Heating circuit pump, heating circuit M1
rR 3-way mixer
or
Divicon (with 3-way mixer and heating circuit pump)
tP Heating circuit 2 with mixer
tQ Extension kit for one heating circuit with mixer with integral mixer motor
and
(cont.)
Preparing for installation
27