Operation Mode

The buffer operation mode with values defined in the next table available at the output ”OperationMode“.

It can be connected to a multistate point for display purposes or used in the control program.

Table 6.   Operation Mode

OperationMode

Function

Comments

1

buffer feed the system

Discharging control and “ChgOverValve1” = buffer

2

heat generator feeds the system

Discharging control and “ChgOverValve1” = boiler

3

buffer charging

Charging control and buffer charging; transmit heat demand to heat generator

4

buffer discharging

Charging control and buffer discharging

5

stop buffer loading at high outdoor temperatures

“FilteredOATemp” > OAT-01

6

buffer overheat protection

Charging control and (“BufUpperTemp” < OVHT-01 or “BufLowerTemp” > OVHT-02)