oventrop 4205904, Installation And Operating Instructions Manual

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The nominal temperature value, at which the valve
opens, can be set at the inner stem (pos. 3) with a flat
screwdriver. When leaving the factory, the valve is set
to 8°C (item no. 4205904) (pos. 1) or 20°C (item no.
4206304) (pos. 2).
The temperature is adjusted by setting the flattened
side of the stem (pos. 4) to the required nominal tem-
perature value. The minimum value amounts to 6°C
(item no. 4205904) or 12°C (item no. 4206304)!
Temperature increase:
Turn anticlockwise.
Temperature reduction:
Turn clockwise.
The calibrating range must not be exceeded!
NOTICE
Example – Setting from 20°C to 14°C:
Illustr. 7.2 Setting of the nominal temperature value
7.3 Checking the calibration
Illustr. 7.3 Checking the calibration
Item no. 4205904
(6°C - 18°C)
Item no. 4206304
(12°C - 24°C)
The calibration of the valve can be checked as fol-
lows:
– Turn the nominal temperature value to 18°C (item
no. 4205904) (pos. 1) or 24°C (item no. 4206304)
(pos. 2) with the flattened side of the stem.
– The calibration range is correct if the inner setting
stem and the outer splined stem are at the same
level. If this is not the case, wrong temperature va-
lues will be reached during operating!
– If the two stem are not at the same level at a setting
of 18°C or 24°C, the inner stem has to be turned
by 360°.
7.4 Isolation
Isolation of the valve is carried out by turning the
handwheel clockwise until stop.
If the valve shall be opened again after all work has
been completed, the handwheel has to be turned
anticlockwise until stop.
To guarantee a perfect regulation function, iso-
lated valves must be opened completely when
putting the system into operation again!
NOTICE
햲
햳
햴 햴