EN
30
BIOCLASS iC 66
6.2
Operation with a control thermostat in the BT buffer tank (P.08 = 3 or 4)
In this operating mode you must select the desired set point temperature of the boiler
(see "Selecting
the boiler set point temperature")
and, using the control thermostat installed in the buffer tank, you
must also select the desired set point temperature in the buffer tank.
It is essential for the
operation of the installation that the set point temperature selected for the boiler exceeds
the set point selected for the control thermostat of the buffer tank and it is recommended
that it be at least 5 to 10 °C higher
. The modulating burner of the
BioClass iC 66
boiler will start
working to heat the water within it. When the boiler temperature exceeds 60 ºC the feed pump for the
buffer tank (
Bbt
) will start up to heat the BT tank, provided that its control thermostat is activated
(demanding heating). When the buffer tank thermostat reaches the desired temperature and turns off
the heating demand, operation of the buffer tank feed pump (
Bbt
) will be disabled.
Regarding the central heating service of the boiler, the circulation pump (
BC
) will be activated whenever
room thermostat No. 1 (
TA
1
), or the remote control
LAGO FB OT+
(if present), demands heating. In
other words, when the room temperature where the thermostat or the remote control is installed is
lower than that which is set. When the atmosphere reaches the desired temperature and after a time
of post-circulation (parameter
P.15
in the "Technician Menu"), the operation of the heating pump (
BC
)
will turn off.
The boiler's central heating service can be totally disabled (
Summer
mode
) by selecting a boiler set
point value of "
OFF
". In this operating mode, only the DHW production function will remain enabled,
providing there is a DHW tank connected to the tank (
P.08
=
3
) or to the boiler (
P.08
=
4
).
IMPORTANT: It is essential for the operation of the installation that the set point
temperature of the boiler exceeds the set point selected for the control
thermostat of the buffer tank.
NOTE: This operating mode is only activated when parameter P.08 of the "Technician"
menu is set to 3 or 4 and when there is a buffer tank installed.
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