Viessmann Vitocal 300-G Installation And Service Instructions Manual page 89

Electrical connections
Sensors
Plug Sensor
F0 Outside temperature sensor, connect on site
F2 Primary circuit flow temperature sensor, connect on site
(X5.2/X5.3) with two-stage heat pump (see the following chapter)
F3 Primary circuit return temperature sensor, connect on
(X5.4/X5.5) site with two-stage heat pump (see the following chap-
ter)
F4 Buffer temperature sensor, top; connect on site
(X5.6/X5.7)
F6 Cylinder temperature sensor, top; connect on site
(X6.1/X6.2)
F7 Cylinder temperature sensor, bottom; connect on site
(X6.1/X6.3)
F12 Flow temperature sensor, heating circuit with mixer (M2);
connect on site
F13 System flow temperature sensor (with sensor well, down-
stream of heating water buffer cylinder), connect on site
F14 Flow temperature sensor, cooling circuit (direct heating
circuit A1 or separate cooling circuit); connect on site
F16 Room temperature sensor for separate cooling circuit
(requirement) or for direct heating/cooling circuit (recom-
mendation); connect on site
F17 Do not connect anything here
(X6.4/X6.5)
F18 Return temperature sensor, secondary circuit for heat
(X6.6/X6.7) pump stage 2 (if installed), connect on site
F20 Boiler temperature sensor, external heat source, connect
(X6.8/X6.9) on site
aVG KM BUS
On-site component connection (wires interchangeable);
for several appliances, use the KM BUS distributor
(accessory).
■ Extension kit for one heating circuit with mixer M3
■ Vitotrol 200A remote control (assign the heating cir-
cuits at the remote control)
■ External extension H1
■ Vitocom 100 communication interface
■ Vitosolic 100/200 solar control units
(cont.)
Installation sequence
Type
Ni 500
(PTC)
Pt 500
(PTC)
Pt 500
(PTC)
Pt 500
(PTC)
Pt 500
(PTC)
Pt 500
(PTC)
Ni 500
(PTC)
Pt 500
(PTC)
Ni 500
(PTC)
Ni 500
(PTC)
Pt 500
(PTC)
Pt 500
(PTC)
Pt 500
(PTC)
89