Viessmann Vitocal 300-G Installation And Service Instructions Manual page 40

Installation sequence
Electrical connection
Connection of primary circuit flow/return temperature sensor, 2-stage heat pump
Fig. 29
Flow temperature sensor, primary circuit
aS
Return temperature sensor, primary circuit
aD
Using the cable ties provided, fasten sensor leads and
dismantled leads (with plug
other low voltage leads.
!
Please note
Unmarked sensor leads cannot be uniquely
identified.
Mark sensor leads.
Swimming pool heating
Note
Swimming pool heating is controlled via EA1 exten-
■
sion with KM-BUS.
■ Make connections to EA1 extension only in accord-
ance with Fig. 30.
■ A filter circuit pump cannot be controlled via the heat
pump control unit.
40
(cont.)
2.
< 42 V
3.
/ ) together with the
aS aD
1.