Taconova - ES 5941Z

If the warm holding function is active, the temperature in the heat

exchanger is maintained at BAS01 DHW TEMP.SETPOINT plus minimum

temperature loss STE14 MIN. TDIFF CHILLER at the heat exchanger.

This prevents the heat exchanger from cooling down even after a pro-

longed tapping break and enables rapid domestic hot water control

when tapping recommences. If warm holding is not achieved after

WHF02 MAX SWITCH ON TIME, the function is suspended for WHF01 MIN

SWITCH OFF TIME.

In this mode, multiple stations can be interconnected for domestic

hot water preparation. In standby mode, all stations are hydraulically

separated by a zone valve ZV (L4/N/PE). The zone valve of the fore-

most station is always open.

Tapping active, SEK04 FLOW RATE DHW > STE15 MIN FLOW RATE. The

first station enters operation. If this switch-on threshold is reached

for a station, the second station is switched on. The switch-on

threshold corresponds to the speed of the primary pump and can

be adjusted KAS05 SWITCH-ON POINT CAS.. A defined time KAS03

TIME LAG STATION must be exceeded in relation to this threshold.

Both stations control the domestic hot water setpoint temperature at

the outlet sensor TWW, see

Ä Chapter 6.1 ‘Fresh water preparation’

on page 36.

If the switch-off threshold is not reached, the most recently acti-

vated station is shut down. The stations that are still active continue

to control the domestic hot water setpoint temperature TWWset. The

switch-off threshold corresponds to the speed of the primary pump

and can be adjusted via KAS06 SWITCH-OFF POINT CAS.. A defined

time KAS03 TIME LAG STATION must be undershot in relation to this

threshold.

For each station in the cascade, STN 1 ... 5 for short, a 4-digit status

is displayed in the master STN1 ... 5 STATUS STATION CAS..

Cascade

Function

Status

The switch-off threshold should always be greater

than the minimum speed of the primary pump STE03

MIN SPEED PRIM. PUMP.

Digit 1= sequential number of

the station

0: Station not available

1...5: Current position in the

cyclical change from station 1 to

03/2024 Item no. 215790 EA no. 1321