DualTherm
12
3.9
Installation with a BT Buffer Tank
The
DualTherm
boiler can be installed with a
BT Buffer Tank
during the installation from the wide
range offered by DOMUSA TEKNIK, which may increase the benefits provided by the boiler in the
heating service.
For this reason, the electronic control of the boiler is equipped with an input for a temperature
sensor or a temperature thermostat (
Sbt
; terminals 18-19 on connection strip
J7
) and a circulation
pump output (
Bbt
; terminals N-7 on the connection strip
J2
) dedicated exclusively to managing the
heating of the buffer tank. Using these control elements of the boiler it is possible to manage 4
different modes of buffer tank hydraulic installation. The installation type will be selected using
parameter
P.08
in the "Technician" menu on the control panel.
The boiler is supplied with this installation option disabled. To enable it, the electrical resistance
(
Rbt
) connected between terminals
20
and
21
of connection strip
J7
(see "Connection Diagram")
must be removed and replaced with a temperature sensor (supplied as an option by DOMUSA
TEKNIK) or a control thermostat installed in the BT buffer tank. After disconnecting the
P.08
parameter "Technician" menu of the control panel must be enabled, from where you can select the
installation mode desired.
3.9.1
Installation with Sanit DHW tank after BT tank and control by temperature sensor (P.08 = 1)
In this installation mode, all heating circuits, as well as the circuit for DHW production by
accumulation 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 temperature sensor (
Sbt
) immersed in
the buffer tank and electrically connected to the boiler. The temperature sensor is optionally
supplied by DOMUSA TEKNIK.
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 HM
boiler:
-
Unplug the boiler from the mains.
- Disconnect the electrical resistance (
Rbt
) connected between terminals
20
and
21
of
connection strip
J7
(see "Connection Diagram")
.
- Connect the BT tank temperature sensor (supplied optionally) to the sensor connection strip
J7
(
Sbt
; terminals
20
and
21
)
(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 terminal strip
J2
(
Bbt
; terminals
N
and
7
)
(see
"Connection Diagram")
.
- Connect the boiler to the mains power.
Содержание Dualtherm 25
Страница 1: ...INSTALLATION AND OPERATING INSTRUCTIONS DUALTHERM ...
Страница 74: ...DualTherm 72 Boiler 2 3 4 5 7 10 9 15 16 20 21 8 17 18 19 1 6 14 11 13 12 23 28 31 29 27 25 24 22 30 26 ...
Страница 82: ...DualTherm 80 Electrical board Burner SELEDUA001 8 9 2 1 3 4 5 6 7 SELEDUA000 14 14 17 16 10 11 12 13 18 19 15 ...
Страница 90: ...DualTherm 88 NOTES ...
Страница 91: ...89 NOTES ...
