3-Way Valves - Viessmann PLC VITOCAL 350-HT PRO Service Instructions For Contractors

Operating conditions and actuator tests

3-way valves

Launch with the 3-way valve symbol
Fig. 35 Example
■ "Act.sig"
Displays the position of the valve
■ "Manl actuat. sig"
To change between manual switching and automatic
operation
"AUTO" The position of the valve is determined by
the heat pump.
"MANL" The position of the valve is determined by
the value in the entry field:
100 %: Outlet straight through the valve is
fully open.
0 %: Outlet to the bypass is fully open.
(cont.)
Diagnosis
49