System Configuration - Viessmann PLC VITOCAL 350-HT PRO Service Instructions For Contractors

Configuration
(cont.)

System configuration

Launch with
■ "Menu"
■ "Configuration"
■ "Sys."
Fig. 6
Buttons:
"No. of comprssr stages" "2"/"3"
■
Number of compressors which are installed in the
machine
■ "Maintaining spec. set val"
Method of assigning set values for high temperature
maintenance
"Intrnl" Fixed default specified by entering a value
"0-10V" Analogue specification from a separate
system
"BUS" Specification via Modbus, see page 28
"Heat source"
■
"Groundwater"
–
– "Geoth. pr."
– "Waste ht"
■ "Priority DHW or HWBC"
Cylinder which has priority when there is simultane-
ous demand.
"DHW" DHW cylinder (domestic hot water)
"HWB" Heating water buffer cylinder
"GLS mode" "Y"/"N"
■
Is the system being controlled by a building manage-
ment system (BMS)?
The Modbus stage enable from the BMS is taken as
the stage request.
"Modbus stage enable" "Y"/"N"
■
Stage enable via Modbus?
"Refrig. sensor installed" "Y"/"N"
■
Is a refrigerant sensor installed which must be evalu-
ated?
Description/external control options
With full external control, the primary pump, secondary
pump, the 3-way mixing valve for low temperature
maintenance and the 3-way mixing valve for high tem-
perature maintenance are controlled. The number of
enabled compressor stages can be specified via the
Modbus.
Configuring the system
13