![Viessmann PLC VITOCAL 350-HT PRO Operating Instructions For The System User Download Page 20](http://html1.mh-extra.com/html/viessmann/plc-vitocal-350-ht-pro/plc-vitocal-350-ht-pro_operating-instructions-for-the-system-user_1017681020.webp)
20
Coolant buffer cylinder
To call up the
"Coolant buffer cylinder"
page, tap on
the following buttons:
■
"Menu"
■
"Coolant"
Fig. 13
A
Set value for coolant buffer cylinder
B
Coolant buffer cylinder temperature, top
C
Coolant circulation pump
D
Mixing valve, low temperature maintenance
E
Primary pump
F
Inlet temperature, primary heat pump
G
Outlet temperature, primary heat pump
H
Flow temperature, coolant buffer cylinder
K
Coolant buffer cylinder temperature, bottom
Cooling method
"AC"
"Active cooling": The coolant buffer cylinder is
actively cooled by the heat pump
"NC"
"Natural cooling": The coolant buffer cylinder is
cooled by the heat source (e.g. geothermal
probes)
Operation
Programming unit
(cont.)
5801 531 GB