Technische Alternative UVR 16x2

Charging pump
94
Charging pump
Standard diagram
Function description
Charging pump A is switched on if the feed temperature T.feed is above the minimum temperature
and is higher than the reference temperature T.ref by a given differential. In addition, T.ref must not
have reached its maximum limit yet.
Input variables
Enable
General enabling of the function (digital value ON/OFF)
Feed temperature
Analogue input signal for the feed temperature
Reference temperature
Analogue input signal for the reference temperature
Minimum feed temp.
Analogue value specifying the minimum temperature at the feeding
appliance (e.g. boiler)
Max. reference temp.
Analogue value specifying the maximum reference temperature (e.g.
cylinder)
➢ The minimum temperature at the feeding appliance and the maximum reference
temperature are normally defined by the user. These two thresholds are defined as input
variables to maximise the programmer's linking options.
Example: Link with burner demand for DHW heating. The DHW demand supplies the
effective set temperature for the cylinder as an output variable. That allows the set
temperature to be used as the maximum temperature for the Charging pump function as
well.