Operation Manual

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connected.
In the case of a defective sensor or if it is not connected, the boiler is controlled in the tEr (like at P3.1 = 1) mode.
otP 4 Heating is controlled by external regulator which is connected by way of the OpenTherm Plus
interface.
In the case of defective communication or regulator, the boiler is controlled in the tEr (like at P3.1 = 1) mode.
ot- 5 Heating is controlled by external regulator which is connected by way of the OpenTherm Lite
interface.
In the case of defective communication or regulator, the boiler is controlled in the tEr (like at P3.1 = 1) mode.
diS P3.2 Menu display type (mnemotechnical texts/numerical parameters)
Settings options:
diS = 012, AbC (P3.2 = 0, 1 ), leading value AbC (1).
9. Putting the boiler into operation
Service engineer with authorization from the manufacturer is obliged to make a verifiable
demonstration for the user of the boiler operation, its individual parts, safety components and control
methods prior to putting the boiler into operation and fill in the letter of guarantee and hand over this
Operation and Maintenance Manual to the user.
User is bound to observe the correct use of the boiler in accordance with this Manual; this is a basic
precondition for acknowledgement of the warranty. It is further strictly forbidden to interfere with any of the
sealed parts inside the boiler!
Warning:
The settings of the boiler output range and other parameters must be in compliance with the technical data.
Any excess loads or incorrect use of the boiler can cause damage to its components. Warranty does not apply to
the components which suffer this kind of damage!
♦ General instructions:
The following must be checked before the electric boiler is set into operation:
 connection to the heating system
 opening of the fittings separating the electric boiler from the system and securing them against
manipulation
 charging (may be followed by pressurizing) the system by soft water and subsequent bleeding
 electric connection and protection in line with the CSN standards. For further details refer to the
Chapter “Wall-mounting of the boiler”.
The procedure for setting the boiler into operation is as follows:
 switch on the main circuit breaker (switch) in the power intake, switch on the boiler by pressing the O/I
button for heating actuation
 set the desired outlet boiler temperature to maximum
 check the correct functioning of all safety thermostats and control components
 check the settings of the boiler output range, potentially adjust the settings on the basis of the heated
building.