TA UDV, Installation Instructions Manual

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4
Safety requirements
All installation and wiring work on the 3-way valve may only be carried
out in a zero volt state.
The opening, connection and commissioning of the device may only be
carried out by competent personnel. While doing so, they must observe
all local safety requirements.
This device is state of the art and meets all necessary safety regulations. It may only be used
in accordance with the technical data, safety requirements and regulations listed below.
When using the device, also observe all statutory and safety regulations apposite to the
particular use.
► The device may only be installed in a dry interior room.
► It must be possible to isolate the 3-way valve from the mains using an omnipolar isolating
facility.
► Before starting installation or wiring work, the 3-way valve must be completely isolated
from the mains and protected against reconnection.
► Safe operation is no longer possible if the 3-way valve exhibits visual damage, no longer
functions or has been stored for lengthy periods under unsuitable conditions. If this is the
case, disable the 3-way valve and secure against unintentional use.
Maintenance
The device does not require any maintenance and cannot be adjusted.
The design characteristics of the device must not be changed during repairs. Spare parts
must correspond to the original spare parts and must be used in accordance with the build
version.
Function
The UDV 3-way valve is a ball valve suitable for temperatures up to 100 °C with T-bore and
3/4" connections. The valve position is indicated on the casing.
Internal spring terminals permit free wiring in place of a fixed connection cable.
The valve may be switched both with relay changeover contact (3-point control signal), or
with continuous phase and N/O relay (2-point control signal, virtual return spring).
Internal coding and random positioning of the motor allows free selection of the hydraulic
paths (left-right, straight-left and straight-right).
All materials in the hydraulic area are approved for use with drinking water. However, it is not
DVGW-certified as a unit.