System Version 2 (Type Aw-O) - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

System version 1 (type AW-O)
Setting parameters
Parameter
Basic settings
System diagram
Wtimer DHW Circ. (e.g.
DHW circulation pump)
Electric heating
Inst.htg.water heater

System version 2 (type AW-O)

Select system diagram 6 (see
page 132)
1 heating circuit without mixer (A1)
1 heating circuit with mixer (M2)
DHW heating with DHW cylinder
(cont.)
Setting ID
2 7000 System definition
Setting switch- 701B System definition
ing times
Yes 7900 Electric heating
Solar DHW heating (alternative)
Heating water buffer cylinder
Note
The hydraulic diagram is shown
with heat pump type AW-O.
For type AWC-I, the secondary
pump and 3-way valve are already
installed and electrically connected
inside the appliance (electrical con-
nection from page 68).
The appliance starts immediately
after switching ON; the insertion of
a jumper in the safety chain is not
required.
Preparing for installation
Parameter group
31