5 Boiler control panel
26
FA ROTEX ESU - 07/2008
Installation (observe sequence)
1.
Insert the boiler control panel into the mounting. Insert and tighten the fixing screws.
2.
Insert the fill level probe, attach the covering cap and screw it on.
3.
Plug safety temperature limiter (STL) into immersion tube of the heat generator flow.
4.
Place all sensor and connecting cables into the cable ducts of the control panel. Ensure the correct cable routing through the
strain relief plates.
5.
Plug all connectors onto the circuit board. The connectors are shape-coded to prevent them being mixed up.
Do not force the connector!
6.
Mount the control panel cover.
7.
Connect cables A + B with the power supply terminal box and tighten cable glands (C + D).
8.
Connect terminals L1, L2, L3, N, PE and 1 to 5 of the cables to the control panel. Close the terminal box.
9.
Screw in the pressure gauge capillary tube. Ensure the correct seating of the ring seal.
10.
Install heat insulation at the return connection and connect the return flow temperature sensor cable.
11.
Top up with water until the required system pressure is restored.
12.
Open the stopcocks for heating. Vent the system again (top up with water if required).
13.
Put on cover and tighten safety screws.
5.3
Changing cables
The connecting cables must either be released from the boiler control panel or from the relevant components.
– The cables for the internal components in the unit are connected to the circuit board connectors and cannot be released.
They can be released from the respective components where they are plugged in.
– The cables of external components (e. g. external temperature sensor) or of components that are not included in the scope
of delivery (e. g. mixer), are connected to the circuit board connectors via screw terminals.
Changing the cables (observe sequence)
1.
Remove the protective cover.
2.
Unscrew the control panel cover and remove the cable duct cover.
3.
Pull out the corresponding sensor or connection cable from the cable duct of the control panel.
4.
Pull the relevant connectors off the circuit board.
5.
Separate the other cable end from the component (release plug connection or remove the cable from the terminal).
6.
Replace the cable. Ensure that the cable cross section is correct.
Install the new cable in reverse order. Whilst doing so, ensure the following:
– The technical specification of the new cable must correspond to the values of the replaced cables (e. g. conductor cross
section).
– The circuit board connectors are shape-coded. Do not force the connector!
DANGER!
Danger of death due to electric shock.
Live parts can cause fatal burns or injuries on contact.
• Before starting any maintenance work on the central unit, disconnect it from the power supply (switch off
fuse, main switch) and secure it against unintentional restart.
Содержание E-Solar Unit ESU 509
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