19/63
G.83.0074 - Release 8.1.0 CH 2014
ista International GmbH - Grugaplatz 2 - 45131 Essen
http://www.ista.com
Commissioning
Parameterizing
Switch to the parameterising loop of the ultego III eco as
described above. The first - flashes in the display. Keep
pressing the button to enter the respective digit of the cur-
rent date (date format: DDMMYY). Press button briefly to
switch to the next digit. After entering correctly, a rolling
menu appears, which every 1.5 s switches to the next
menu item of the parameterising loop. Press button for 3
seconds and then release to switch to Edit mode for the pa-
rameter currently displayed. After entering the new value,
press the button briefly to return to the rolling menu.
Commissioning
1.
Open the shut-off valves in front and behind the instal-
lation site.
2.
Check the heating system for impermeability and ven-
tilate it thoroughly.
3.
The message “F0” disappears at latest after 100s.
Then check the measuring values “Temperatures” and
“Flow” for plausibility.
4.
Remove air from the system until the flow indication is
stable.
5.
Attach the seals to the screw fittings and the sensors.
Exchange
1.
Note the direction of flow and compare with the arrow
on the meter.
2.
Close the shut-off devices in front and behind the in-
stallation site.
3.
Remove the seals.
4.
Detach the calculator from the wall, if applicable.
5.
Remove the temperature sensor from the tee, ball
valve or immersion sleeve.
6.
Slowly open threaded fittings as there could still be
pressure on the line (e.g. shut-off valve no longer clos-
es correctly).
7.
Dismount meter.
8.
Remove seals.
9.
Continue as from Mounting point 9.
Reading
At the end of each month, the calculator saves the values
for the following readings for 15 months
▪
Thermal energy (meter reading)
▪
Volume (meter reading)
▪
Downtime meter (meter reading)
You can read out the meter in two ways:
1.Via the optical interface
2.Manually via the indication loops
Error codes and IDs
The heat meter carries out self-diagnostics continuously
and can therefore indicate various installation and device
errors:
NOTICE
►
If the meter is already connected to the
MBus, a voltage change must be generated
at the MBus to manually accept a new
MBus address in the MBus.
►
The device number and the number for the
firmware version are assigned by the man-
ufacturer.
NOTICE
►
The allowable average readout frequency
is 1x every 24 h with 300 Bd or 1x every 3 h
with 2400 Bd. A more frequent readout is
not allowed can can cause the device to
malfunction!
Error
code
Error
Action
FL nEG
Wrong flow direction Check / correct the
flow or installation
direction
DIFF nEG Negative tempera-
ture difference
Check / replace the
place in which the
sensors are installed
F0
no measurable flow
Air in measuring sec-
tion/pipe, vent the
pipe (as-delivered
condition)
F1-F3, F5
- F6
Temperature mea-
surement error
Replace the meter
F4
Battery empty
Replace the meter
