Viessmann Vitocal 300-G Installation And Service Instructions For Contractors page 85

Electrical connections in the heat pump control...
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)
or
■ Return temperature sensor, solar circuit (with integral
solar control module)
Connect on site
F20 Boiler temperature sensor, external heat source, connect
(X6.8/X6.9) on site
F21 Solar circuit flow temperature sensor (with integral solar
control module), connect on site
Installation sequence
(cont.)
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)
Pt 500
(PTC)
85