13
- Connect the BT tank temperature sensor (supplied optionally) to the sensor connection strip
J7
(
Sbt
; terminals
18
and
19
)
(see "Connection Diagram")
.
- Insert the temperature sensor bulb in the bulb-holder sheath provided in the buffer tank.
- Connect the BT tank feed pump to the component connection strip
J2
(
Bbt
; terminals
N
and
7
)
(see "Connection Diagram")
.
- Connect the boiler to the mains power.
- Using the control panel, access parameter
P.08
in the "Technician" menu
(see "Technician
Menu")
and set the value to "
2
".
- After that, if it is necessary, set also the parameter
P.28
"BT buffer tank temperature hysteresis".
For the correct hydraulic and electrical installation of a Sanit DHW tank with a
BioClass TR
boiler,
carefully follow the directions in the section
"Installing a Sanit tank"
in this manual.
Once the hydraulic and electrical connection described above has been completed, to adjust and
configure the BT buffer tank operation, carefully read the section
"Operation with a BT buffer tank"
in this manual.
3.9.3
Installation with Sanit DHW tank after BT tank and control by thermostat (P.08 = 3)
In this installation mode, all heating circuits, as well as the circuit for producing DHW by
accumulation, if present, must be hydraulically connected to the BT buffer tank. In other words, as
shown in the following hydraulic diagram, the BT buffer tank is connected to the boiler, interposing
a circulation pump (
Bbt
), and all the heating circuits of the system are connected to the BT tank.
The temperature of the BT tank is controlled and managed by a thermostat (
Tbt
) installed and
immersed in the buffer tank and electrically connected to the boiler. The temperature control
thermostat is not supplied by DOMUSA TEKNIK but can be purchased at any specialist central
heating supplies warehouse.
Heating
Instal
DHW
After the hydraulic installation of all the system components, proceed as follows to carry out the
correct electrical connection of the BT buffer tank to the
BioClass TR
boiler:
-
Unplug the boiler from the mains power.
- Disconnect the electrical resistance (
Rbt
) connected between terminals
18
and
19
of
connection strip
J7
(see "Connection Diagram")
.
- Connect the
NC
contact (normally closed) on the BT tank control thermostat on the sensor
connection strip
J7
(
Sbt
; terminals
18
and
19
)
(see "Connection Diagram")
.
- Insert the thermostat bulb into the bulb-holder sheath provided in the buffer tank.
- Connect the BT tank feed pump to the component connection strip
J2
(
Bbt
; terminals
N
and
7
)
(see "Connection Diagram")
.
- Connect the boiler to the mains power.
