General Set Values - Viessmann PLC VITOCAL 350-HT PRO Service Instructions For Contractors

Adjusting set values

General set values

Launch with
■ "Menu"
■ "Set val."
■ "General"
Fig. 18
The following settings can be changed:
"Max. casing temp"
■
The temperature of the casing at which the system is
switched off (priority 1 fault message is triggered)
■ "Start temp, room vent."
Room temperature from which room ventilation is
requested
"Stop temp, room ventilation"
■
Room temperature below which room ventilation is
no longer requested
■ "Start temp, casing vent."
Casing temperature from which the casing fan is
switched on
(cont.)
"Stop temp, casing ventilation"
■
Casing temperature below which the casing fan is
switched off
■ "Frost protection (evaporation temp)"
To avoid the risk of frost, the evaporation tempera-
ture should not drop below this value
"Limit, refrigerant pre-alarm (ppm)"
■
Concentration of refrigerant in the measured air at
which a pre-alarm is triggered
■ "Limit, refrigerant alarm (ppm)"
Concentration of refrigerant in the measured air at
which the main alarm is triggered
Configuring the system
25