Viessmann Vitocal 300-G Installation And Service Instructions Manual page 81

Connection of electrical components
Equipment
External demand See the previous
screen
Function "External See previous illus-
mixer open" tration and
page 143
External operating See the previous
mode changeover illustration 143
"Ext. Blocking", "Ext. mixer close"
These functions can also be connected via the "External extension H1". The
switching function via "H1" can only be used for one function at the time (e.g.
swimming pool water heating or "Ext. demand").
Installation instructions
"External extension H1"
Note
Requires a zero volt N/O contact,
breaking capacity AC 230; 0.1 A
Connection Comments
ID
Observe parameter 730C
Observe parameter 730C
7014 Set external demand/mixer
7011 Changing the operating
7012 Effect of operating mode
7013 Duration of operating mode
A Terminals on PCB 1
B Zero volt N/O contact
Installation sequence
(cont.)
Setting parameters (group)
No parameters need to be
set
open
0 Ó 7 (system definition)
mode heating circuit
0 Ó 11 (system definition)
changeover
0 Ó 3 (system definition)
changeover
0 Ó 720 (system definition)
81