Connecting The Room Thermostat; Connecting The Outdoor Sensor; Service Connection (Service); Connecting The Domestic Hot Water Tank Sensor - DeDietrich 24 Installation And Service Manual

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6 Installation
6.6.3

Connecting the Room Thermostat

Fig.121 Connecting the Room Thermostat
(OT) or (R-Bus)
OT-RT
TS
R-Bus
6.6.4

Connecting the outdoor sensor

Connect the external probe to terminal X13 (Tout/OS) of the boiler's electronic board, as shown in the wiring diagram at the
beginning of the manual.
Important
Set the type of outdoor sensor used by setting parameter AP056 (see table in the paragraph "Installer parameters
list").
See also
Installing the outside sensor (accessory available upon request), page 166
6.6.5

Service connection (SERVICE)

Connect the wireless interface to terminal X10 on the boiler PCB, as shown in the chapter entitled "Electrical diagram".
6.6.6

Connecting the domestic hot water tank sensor

Connect the external boiler swnsor to terminal X14 (TS) of the boiler's electronic board, as shown in the wiring diagram at the
beginning of this manual.
6.7

Filling the installation

Fig.122 Display of the system pressure
value in standby
F1 F2
180 INIDENS
OS
F3 F4
BO-0000271-1
Before connecting the room thermostat (RT), the Open Therm (OT) or (R-
Bus) device on terminal X12 of the boiler PCB, remove the jumper as
shown on the electrical diagram at the beginning of this manual.
Important
The room thermostat must be in low voltage.
Caution
It is recommended to pay particular attention when filling the
heating system. In particular, open the thermostatic valves if fitted
to the system and let the water flow slowly in order to avoid the
formation of air inside the primary circuit, until the necessary
operating pressure is reached. Finally, degas any radiant
elements in the system. De Dietrich does not accept any liability
for damage arising from the presence of air bubbles inside the
heat exchanger due to any failure to correctly or accurately follow
the aforementioned instructions.
1. Before filling the heating installation, clean it properly and flush it
thoroughly.
2. Fill the system until the pressure reaches between 1.0 and 1.5 bar.
3. For degassing, activate the function as described in the chapter
entitled "Degassing operation".
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