WHF00 WARM HOLDING FUNCTION
NAC00 RECHARGING PRIMARY
Thermal disinfection
Total fault message
WHF00 WARM HOLDING FUNCTION is a local option for each station.
NAC00 RECHARGING PRIMARY is a central option. It is activated and
installed on one device in the cascade and applies centrally to all
devices in the cascade.
The parameters for thermal disinfection are set at the master. The
corresponding info messages are also specified at the master. With
regard to a fixed command station (cascade mode = 0) with a local
circulation pump, the zone valves of the slave stations remain closed
and are therefore not disinfected. If the circulation pump is central
(KAS07 = 1), all zone valves are opened for disinfection to enable flow
through the entire installation.
The total fault message output is non-floating (relay L5 (Error): 230V
AC). The total fault message is triggered as soon as an error occurs in
the controller. In order to identify the error in question, it is necessary
to check the controller display. The logic of the relay switching can
be defined with the parameter KOM03. The total fault message is a
local function. With regard to cascade operation, each station needs
to be connected individually as slave stations do not relay their error
messages to the master.
03/2024 Item no. 215790 EA no. 1321
45
Any interruption of charging “11” due to the primary
energy being too low applies to all stations.