25
Installing the device
WARNING!
Always pull the mains plug before opening the casing!
Only work inside the controller with the power cable disconnected.
Unscrew the screws on the top of the case and lift the cover. The control electronics are in
the cover. The connection to the terminals in the lower case is made by contact pins when
the cover is later replaced. The body of the case can be screwed securely to the wall through
the two holes using the fastening materials provided (
with the cable glands downwards
).
Electrical connection
Warning:
Electrical connection may only be carried out by a technician according to the
pertinent local regulations. The sensor lines must not be laid in the same cable channel as
the supply voltage. The maximum load of output A1 equals 1.5A while that of outputs A2 and
A3 each equals 2.5A! All outputs are fused together with the device itself with 3.15A. In-
creasing the fuse protection to max. 5A (medium time lag) is permitted. The appropriate strip
terminal
PE
is to be used for all protective conductors.
Notice:
The system has to be grounded properly and furnished with surge arresters to pro-
tect it from damage due to lightening. Sensor failures due to storms and static electricity are
usually the result of faulty construction.
All sensor grounds
are interconnected and fully interchangeable.
Содержание UVR 63H
Страница 1: ...UVR 63H Version 7 6 EN Universal heating controller Operation Installation instructions en ...
Страница 2: ......
Страница 67: ......