57
Start-up
•
The “5 safety rules” to be used:
Disconnect from mains; Safeguard from switching on
again; Check that system is deenergised; Earth and short
circuit; Cover or cordon off neighbouring live parts;
•
Select suitable tool, measuring equipment and, if neces-
sary, personal safety equipment;
•
Evaluation of measuring results;
•
Selection of electrical installation material for safeguard-
ing shut-off conditions;
•
IP protection types;
•
Installation of electrical installation material;
•
Type of supply network (TN system, IT system, TT system)
and the resulting connecting conditions (classical zero
balancing, protective earthing, required additional meas-
ures etc.).
Installation may only take place in normal com-
mercial switch boxes (device boxes) in accord-
ance with DIN 49073-1.
Please observe the hazard information in section
„2 Hazard information“ on page 50 during in-
stallation.
Permitted cable cross sections for connecting to the wall
thermostat are:
rigid cable
[mm
2
]
flexible cable with/without ferrule
[mm
2
]
0.75 – 1.50
0.75 – 1.50
