V3.2 03.2015•
Subject to modification
14
UL marked actuators is optional, please contact your local Sales Representative for details.
Maintenance
The system must not be returned to service until the ball valve and the rotary actuator have
been properly reassembled in accordance with the instructions and the pipelines have been
refilled in the proper manner.
Flow direction
The direction of flow, specified by an arrow on the housing, is to be complied with, since
otherwise the flow rate will be measured incorrectly.
Earthing
Above DN65, it is imperative that the measuring pipe be correctly earthed in order to ensure
that the volumetric flow sensor does not make any unnecessary incorrect measurements.
Inlet section
In order to achieve the specified measuring accuracy, a flow-calming section or inflow
section in the direction of the flow is to be provided upstream from the measuring pipe
flange. Its dimensions should be at least 5x DN.
Installation of immersion sleeve and
temperature sensor
DN15-DN50
The valve is equipped with two fully-wired temperature sensors.
• T2: This sensor is installed on site near the valve unit.
• T1: This sensor is mounted at the installation site ahead of the consumer (valve in the
return line) or after the consumer (valve in the supply line).
Two T-pieces for installation of the temperature sensors in the pipelines are included in the
shipment.
~ 0.8 m
~ 3.0 m
DN L min.
15 5 x 15 mm = 75 mm
20 5 x 20 mm = 100 mm
25 5 x 25 mm = 125 mm
32 5 x 32 mm = 160 mm
40 5 x 40 mm = 200 mm
50 5 x 50 mm = 250 mm
L ≥ 5 x DN
DN
L min.
65
5 x 65 mm = 325 mm
80
5 x 80 mm = 400 mm
100
5 x 100 mm = 500 mm
125
5 x 125 mm = 625 mm
150
5 x 150 mm = 750 mm
L
≥
5
x
DN
EV..R+BAC / P6..W..EV-BAC
Installation notes
DN
L min.
15
5 x 15 mm = 75 mm
20
5 x 20 mm = 100 mm
25
5 x 25 mm = 125 mm
32
5 x 32 mm = 160 mm
40
5 x 40 mm = 200 mm
50
5 x 50 mm = 250 mm
L ≥5xDN
DN
L min.
65
5 x 65 mm = 325 mm
80
5 x 80 mm = 400 mm
100
5 x 100 mm = 500 mm
125
5 x 125 mm = 625 mm
150
5 x 150 mm = 750 mm
L ≥5xDN
