TA UDV User manual

UDV
Version 1.0 EN
¾" Universal 3-way valve
Installation instructions
en

Table of contents
Safety requirements ..............................................................................................................4
Maintenance...........................................................................................................................4
Function..................................................................................................................................4
Structure and assembly of the 3-way valve.........................................................................5
Valve:drive unit connection..................................................................................................6
Camshaft.............................................................................................................................6
Use of locking plate as a lever.........................................................................................7
Selecting the rotation angle (90° or 180°)........................................................................7
Control cam valve position indicator................................................................................9
Mounting the drive motor...................................................................................................10
Electrical connection...........................................................................................................11
3-point control signal.....................................................................................................11
2-point control signal.....................................................................................................12
Technical data......................................................................................................................13
Dimensions........................................................................................................................14

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.

5
Structure and assembly of the 3-way valve
Upper casing section
Drive motor
Drive shaft
Camshaft
Terminals
Motor terminals
Locking plate
Valve body with
ball valve
2 limit switches

6
Valve:drive unit connection
Depending on requirements, the valve body can be connected to the drive in 4 different
positions. To secure this connection, the locking plate must be inserted into the slot provided
in the upper casing section.
Examples:
Camshaft
When positioning the camshaft on the valve shaft, ensure that the marking on the valve
shaft coincides with the marking at the lower end of the camshaft:
The marking on the valve shaft indicates the position of the ball valve.

7
If the camshaft is positioned correctly, then the indicator on the camshaft disc coincides with
the position of the ball valve:
Use of locking plate as a lever
The valve shaft can be brought into the correct position with the help of the locking plate. If
pliers are used, they could damage the valve shaft.
Selecting the rotation angle (90° or 180°)
The factory setting for the ball valve rotation angle is 180°. This rotation angle is determined
by the fixed control cam located on the shaft. In its end positions, this control cam actuates a
limit switch, thereby switching off the drive motor.
Fixed control cam
Control cam for
90° rotation angle

8
If a switching angle of 90° is required, then a second control cam must be inserted into the
shaft. To do this, break the control cam (coloured grey in the drawings) out of the disc and
slide it into the groove provided for this purpose.
View of the correctly inserted 90° control cam
If the control cam has been broken out, but is no longer required, then it can be twisted by
180° and inserted into the groove, so that it can no longer actuate the limit switch:
Control cam for
90° rotation
angle active
Control cam
inactive

9
Control cam valve position indicator
When the upper casing section is attached, the current position of the valve is indicated by
the camshaft disc. In the following example, the upper part of the "cross" is red, which
means that this branch is closed.
The position of the
spherical head is therefore:

10
Mounting the drive motor
To connect the drive motor to the camshaft, insert the drive shaft into the motor shaft. Then
secure the motor to the lower casing section with 2 fixing screws.
The motor is connected to the motor terminals at the factory. These connections must not be
interchanged.
Drive shaft
Fixing screws