29
BIOCLASS iC 66
6
OPERATION WITH A BT BUFFER TANK (OPTIONAL)
The
BioClass iC 66
boiler can be accompanied by a
BT Buffer tank
from the wide range of tanks offered
by
DOMUSA TEKNIK
. This tank accumulates heat energy that improves the performance of the system
when switching the boiler on and off. For its correct installation, carefully follow the assembly instructions
included with the tank and for its correct integration with the
BioClass iC 66
boiler, read the instructions
in the section
"Installing a BT Buffer tank"
in this manual.
The electronic control of the
BioClass iC 66
boiler is able to manage four different installation
configurations of the BT buffer tank. Depending on the configuration of the installation (parameter
P.08
in the "Technician" menu) there are 2 operating modes:
6.1
Operation with a temperature sensor in the BT buffer tank (P.08 = 1 or 2)
In this operating mode you must select the desired set point temperature of the buffer tank
(see
"Selecting the buffer tank set point temperature")
and the temperature of the the room thermostat No.
1 (
TA
1
) or remote control
LAGO FB OT+
(if present). The burner will start working to heat the water
in the boiler. When the boiler temperature exceeds 60 ºC the feed pump for the buffer tank (
Bbt
) will
start up to heat the BT tank. The modulating burner of the
BioClass iC 66
boiler will keep the water
in the buffer tank at the set temperature. When the temperature of the tank reaches the selected set
point temperature the burner will shut down until its temperature drops to the value set in parameter
P.28
(by default 5 ºC) below that desired, once again starting a new heating cycle.
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 buffer tank
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
=
1
) or to the boiler (
P.08
=
2
).
NOTE: This operating mode is only activated when parameter P.08 of the "Technician"
menu is set to 1 or 2 and when there is a buffer tank installed.
