Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 87

Electrical connections
Additional pumps for two stage heat pump (type BW/BWS)
Appliance
Circulation pump for cylin-
der heating, heat pump
stage 2 (heating water
side)
(max. 130 W)
Primary pump, heat pump
stage 2
(max. 130 W)
Secondary pump, heat
pump stage 2
(max. 200 W)
(cont.)
Connection
224.5
X1.?
X2.N
224.2
X1.?
X2.N
224.3
X1.?
X2.N
Installation sequence
Required parameters:
Parameter Ó setting
"System definition"
■ "System scheme 7000" Ó
with DHW heating
Note
Two-stage operation is enabled
during commissioning by the
certified heat pump contractor.
No parameters need to be set
"System definition"
■ "System scheme 7000" Ó
"1" to "11"
87