7
Notes ball valves
■
Mount ball valves up- and downstream of the
meter.
■
Mount a ball valve with bore M10x1 for direct
sensors in the supply. This is required for the
installation of the supply sensor
■
For symmetrical temperature sensor installa-
tion, mount an identical ball valve in the return.
This one is used for mounting the return sensor.
Mounting heating- / cooling energy meter
■
Flush the system thoroughly before installing
the heating-/cooling energy meter.
■
Close valves and release pressure.
■
Dismount the existing flow sensor or meter blank.
■
Use only new and flawless sealing material
and check the seal face for damage.
■
Install the new flow sensor according to the
correct flow direction and installation position.
■
Turn heat computer to desired reading position.
Information:
The best measuring results can be
achieved by mounting with horizontal diallevel.
Combi-devices are, for example, used in tight
installation points without room for the calculator
on the flow sensor or when the calculator is dif-
ficult to read. Therefore the device still remains
easy to read enabling optimum use of the space
available for installation of the flow meter.
Installing the temperature sensor
■
The installation of the temperature sensors
should be preferably symmetrical and direct
installation.
■
Do not remove the return sensor if already
mounted in the VMU.This is also valid for all
the safety seals which are mounted on the de-
vice as standard.
■
Sensors are colour-coded (red = supply, blue
= return).
■
The connecting cables may not be buckled, ex-
tended or shortened.
■
The seal at the sensor installation point on the
measuring capsule may not be damaged.
■
Remove locking screw and seal at the ball
valve completely, if existing.
■
Attach the O-ring to the installation aid (the 2nd
O-ring is only a spare O-ring).
■
Using the installation aid, insert the O-ring into
the installation point according to DIN EN 1434
with a slight circular motion.
■
Using the other end of the installation aid bring
the O-ring into the correct position.
■
Insert the 2 halves of the plastic connector into
the sensor’s three notches (crimps) and press
them together.
■
Use the installation aid as positioning aid.
■
Insert the temperature sensor into the installa-
tion point and screw it in tightly until the dead
stop of the seal on the 12-point is reached
(mounting torque 3-5 Nm).
■
The sensor optional integrated in the VMT has
to be secured
■
Secure the sensor after installation against
unauthorised removal with appropriate sealing
(available as a sealing set).
Montage DF- Adapter
