Combined Buffer Upper and Lower Water Temperature Control

For a proper functionality of the PD controller for the lower sensor, we recommend to set a relative high P-band (UWT-01).

Only with high P-bands and a higher control deviation it can be avoided that the lower sensor control will always be overridden by the upper sensor control.

This function is useful for small DHW storage tanks, but you have to be aware that the upper temperature can be significantly higher than the setpoint (upper sensor measured value = calculated setpoint ("CalcDHWTempSp") + ½ P-band (UWT-01))

Table 25.   Parameter List

Description

Range

Default

Units

UWT-01: P-band buffer temperature control


1...20

5
(change to 10)

K