Taconova - ES 5941Z

Some parameters mentioned in the following section

are only visible in the controller with the appropriate

code and, for this reason, such parameters are not

always listed in the parameter lists in the previous

chapter. Changes to these parameters have a deci-

sive impact on the functional capability of the con-

troller and such changes should only be made by

personnel with appropriate training.

Tapping

Primary pump speed control

Maximum domestic hot water tempera-

ture

If tapping is active, flow rate greater than STE15 MIN FLOW RATE,

the domestic cold water is heated to the setpoint temperature,

e.g. BAS01 DHW TEMP.SETPOINT. To this end, power is supplied via

the speed-controlled pump on the primary side in order to reach

and maintain the setpoint temperature at the heat exchanger outlet

sensor TWW.

At each start-up, the primary pump controller for the STE04 RUNTIME

START SPEED time remains at the starting point in order to reach the

setpoint quickly.

The primary pump speed control is carried out between the set min-

imum and set maximum speed. STE01 MIN SPEED PRIM. PUMP, STE28

MAX SPEED PRIM. PUMP. This control range is in line with the primary

pump that was originally installed.

If the measured domestic hot water temperature exceeds the value

BAS02 DHW TEMP. MAXIMUM, the primary pump is switched off.

Setpoint reduction

This function protects against the heat source on the primary side

discharging too significantly. At sensor TPV or TO1, if the following

minimum setpoints [TPV; TO1]set_min are not reached by 1 K, a set-

point reduction becomes active:

n = BAS01 DHW TEMP.SETPOINT + STE14 MIN TDIFF CHILLER.

n = SEK06 SETPOINT CIRCULATION T + STE14 MIN TDIFF CHILLER.

n = LEG01 TEMP TERM. DISINFECTION. + STE14 MIN TDIFF CHILLER.

03/2024 Item no. 215790 EA no. 1321