Cascade Control - Viessmann VITOCAL 300-A Installation And Service Instructions Manual

System definition control settings

Cascade control

The lead appliance of a cascade as
well as each of the max. three lag
appliances must be set. Cascade con-
trol via "Ext. extension H1" possible.
Press the following keys:
1. "Device settings"
2. "Programming"
3. "System definition"
4. y/x for "Cascade control"
(700A).
Number of external heat pumps
Details of the number of heat pumps
(lag appliances) that are connected in
addition to the main heat pump (lead
appliance).
Press the following keys:
1. "Device settings".
2. "Programming".
3. "System definition".
Output lag heat pump
To set the output of all lag heat pumps
as the average value.
Entry only in the lead appliance.
134
5. l/m for the selected value:
"0" for every lag appli-
ance (delivered
condition)
"1" for the lead appli-
ance
"2" No function
6. "BACK" to confirm.
Note
Observe parameter "No. of ext. heat
p".
4. y/x for "No. of ext. heat p"
(5735).
5. l/m for the selected value:
"0" No lag heat pump
(delivered condi-
tion)
"1" up to "3"
Number of lag heat
pumps
"4" No function
6. "BACK" to confirm.
Example:
Lag heat pump 1 = 10 kW
Lag heat pump 2 = 14 kW
Average value = 12 kW