DOMUSA TEKNIK Dualtherm 25, Инструкция по установке и эксплуатации

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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
Installation
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
DualTherm boiler:
- Unplug the boiler from the mains power.
- Disconnect the electrical resistance ( Rbt ) connected between terminals 20 and 21 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 20 and 21 )
(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.
- Using the control panel, access parameter
P.08 in the "Technician" menu
(see "Technician
Menu") and set the value to " 4 ".
For the correct hydraulic and electrical installation of a Sanit DHW tank with a DualTherm 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.
3.10 Installation with a BT-DUO buffer tank (Optional)
The DualTherm boiler can be accompanied by a BT-DUO 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. This tank has a hot water storage tank inside, thereby adding the provision of
DHW in addition to the buffer tank functionality. For this reason, its connection to the boiler as well
as its operating configuration are specific.
For this reason the electronic control of the boiler is equipped with an input for connecting the
primary control thermostat
Tcp of the BT-DUO tank (input Sbt ; terminals 20-21 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. Also, for correctly managing the DHW
production in the tank integrated in the BT-DUO tank, a DHW temperature sensor (supplied
optionally) must be included in the installation.