3
x
Set-up and Installation
22
FA ROTEX A1 BO - 10/2007
Installing the central unit
The oil condensing boiler can be operated either with the ROTEX Control ALPHA 23R or with the ROTEX Control THETA 23R.
The central control unit to be used is supplied separately and must be fitted at the time of installation (also refer to chapter 5.2).
• Push the central unit carefully into the boiler control panel. Ensure that the connecting pins are not damaged.
•
Tighten the fixing screws (right handed threads).
•
Close the bayonet lock (90° rotation).
Establishing the electrical connection
• Check the supply voltage (
~230 V, 50 Hz
).
• Disconnect the junction box of the domestic electrical installation.
• Connect the cables for connecting to the mains in the junction box. Ensure that the polarity is correct.
• Restore power supply to the junction box of the domestic electrical installation.
Switchboard panel:
3.10 Temperature sensor
3.10.1 General instructions for the temperature sensors
The oil condensing boiler has a weather-driven control for the flow temperature. This function requires an external temperature
sensor. A 3 m flexible cable is already connected inside the unit and placed in the control panel on the connecting circuit board.
The temperatures captured by the unit's internal temperature sensors (flow and return flow temperature sensor, flue gas
temperature sensor) are used for the output control of the burner and for fault detection. The temperature sensors are already
factory-connected and can be plugged directly to the respective sensor, if they need to be swapped.
If a hot water storage tank is used, the connected storage tank temperature sensor must be mounted at the suitable position in
the hot water storage tank (observe installation instructions for the hot water storage tank). The mixer circuit flow sensor
(
TMKF
,
15 60 62
) is required to control the mixer circuit.
q
a
Fig. 3-10 Connection diagram of the circuit board connectors and cable colours of the factory-installed connection cables
Connections of the circuit board connectors:
J1
Pump P
K
J2
3-way diverter valve or storage tank charging pump P
L
*
J3
Burner power supply
J4
Burner
communication
J6
Mains connection
J7
Mixer
J8
Communication,
sensors
J10
Sensors
J14
Circulation pump P
Z
Cable colours:
bl
blue
br
brown
ge
yellow
gn
green
gr
grey
rt
red
sw
black
ws
white
n.b.
Contact not assigned
* The adapter cable (
E 1500430
) is needed for connecting a storage tank charging pump.
The electronic control unit detects the existing sensor configuration automatically when switching on the oil
condensing boiler for the first time.
You will find more instructions and an exact description in the documentation "ROTEX Control". It is included
in the scope of supply of the particular electronic control to be ordered separately.
