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BIOCLASS iC 66
16
DHW CIRCUIT'S SETUP PARAMETERS
BioClass iC 66
is equipped with an electronic controller to regulate a Domestic Hot Water production
service, if a DHW tank is connected to the boiler. The following parameters are used to set the parameters
related to DHW service. These parameters are only displayed if a DHW tank is connected. They only may
be modified by a person with sufficient technical knowledge of the meaning of each parameter. Any
inappropriate setting of a parameter of
“Technical Menu”
can cause a serious malfunctioning of the boiler
and could cause damages to people, animals or things.
16.1
DHW installation mode (P.09)
BioClass iC 66
could be set to be connected to a DHW production installation managed by a 3-way
DHW diverter valve or by a hot water tank pump. These two operating modes can be selected by means
of
P.09
parameter:
P.09
= 0=> 3-way DHW diverter valve installation.
P.09
= 1=> Hot water tank pump installation (by default).
16.2
DHW pump post-circulation time (P.16)
This function keeps the DHW valve or pump running for a period of time after deactivating de DHW
service, to avoid the overheating of the boiler due to the temperature inertias of the DHW installation.
By means of parameter
P.16
the period of time that the pump/valve continues to operate may be set.
The range of values selectable is 0 - 20 minutes (by default 5 minutes).
16.3
Legionella protection function (P.17)
This option prevents the proliferation of legionella bacteria in the DHW tank. Every 7 days the
temperature of tank hot water is increased to 70 ºC to kill the bacteria. This function is only active if
the boiler is turned on and a DHW tank is connected. By means of parameter
P.17
the protection
against Legionella bacteria function may be activate or deactivate. By default this function is set
deactivated.
16.4
DHW re-circulation function (P.20 = 2)
The multifunction of the auxiliary relay output allows to install a DHW re-circulating pump in DHW
hydraulic circuit, in order to increase the comfort of DHW service. To activate this function read
“Multifunction-Relay functions”
section.
