3
Installation – Volume meter
a
Close the upstream and downstream shut-off valves nearest to the point where the
SENSONICAL ULTRA heat meter is to be installed.
b
Open the nearest drain valve to decrease the pressure.
c
Remove and empty the tube portion where the hydraulic section of the SENSONICAL ULTRA
is to be installed.
d
Take out the old seals and remove any residues.
e
Position the new seals.
f
Install the volume meter on which the tailpiece-nut fittings have previously been secured
observing the direction of the flow (check the direction of the arrow on the instrument).
g
Tighten the fitting to a suitable torque for the seal supplied.
h
Turn the electronic unit into the correct position for reading.
Installation – flow temperature probe
a
If installing in a dedicated probe holder valve, close it, if in a probe holder TEE, close the
nearest shut-off valves.
b
Remove the cap on the probe connection and clean the surfaces to remove any residues.
c
Remove the O-ring from the probe and place it on the probe connection of the ball
valve/TEE.
d
Insert the probe and adjust its depth of immersion by means of the nipple.
e
Tighten until it stops.
Commissioning the meter
a
Slowly open the shut-off device, check the hydraulic tightness and functionality of
SENSONICAL ULTRA, and clean the electronic unit if needed.
b
Verify the operation of the display by pressing the front button.
c
After verifying the instrument works properly, apply the seals on the temperature probes and
on the volume section of the flow meter.
d
In case the heat meter has to be replaced, note the last displayed consumption data and the
serial number of the instrument being replaced and of the new one as well as all the previous
readings stored in the instrument deemed necessary.
Connecting the two additional pulse inputs (CAL19185MI)
The pulse inputs enable acquiring the consumption of hot and cold water from two volume
meters, according to the following wiring diagram:
IE: pulse input
In pulse emitters with an open collector output it is mandatory to respect the polarity. During
installation, the
conductors must not touch one another to avoid that the instrument logs
the pulses.
Conductor
Colour
1
white
IE1 +
2
brown
IE1 -
3
yellow
IE2 +
4
green
IE2 -
5
grey
M-Bus
6
pink
M-Bus
