19/75
G.83.0170 - Release 8.1.0 CH 2014
ista International GmbH - Grugaplatz 2 - 45131 Essen
http://www.ista.com
Application / Function
This meter is a measuring instrument for physically correct
acquisition of energy consumption. The device consists of
a high-tech plastic flow sensor, two permanently connected
temperature sensors and a calculator calculating the ener-
gy consumption from volume and temperature delta. The
volume acquisition works on the principle of wear-free ul-
trasonic measuring without mechanically moved parts. The
metered flow is calculated with utmost precision by the
comparison of the downstream and upstream ultrasonic
signal runtimes and allowing for temperature dependence.
The long-life battery has been dimensioned for the whole
service life of the meter (see type plate). The meter cannot
be opened without destroying the security stamp.
Notes
▪
The ultego III smart is exclusively intended to be used
with circuit water in heating systems. Do not use with
drinking water.
▪
The requirements on circulating water of the German
Heat and Power Association (AGFW) must be followed.
▪
Flash protection cannot be guaranteed. This must be
secured via the domestic installation.
Safety information
Transport / reverse logistics
▪
You may only transport the ultego III smart in its original
packaging.
▪
Protect the meter from knocks and vibrations.
Installation notices
▪
The unit may only be mounted by authorized expert per-
sonell!
▪
The devices may only be installed and deinstalled in de-
pressurized systems.
▪
After installation, perform a leak test (cold flush).
▪
Only use the meter under operating conditions as de-
scribed on the nameplate, otherwise risks can occur and
the warranty expires.
▪
Breaking the security stamp voids both the warranty and
conformity or calibration.
▪
Only clean the ultego III smart with a soft, damp cloth.
▪
In no case carry out any welding, soldering or drilling
work in the vicinity of the meter.
▪
The meter should remain in the original packaging until
all connection, insulation and rinsing work has been do-
ne.
▪
Prior to installing the ultego III smart, rinse the system
thoroughly.
▪
Avoid any cavitation in the whole measurement range
using overpressure, i.e. minimum 1 bar up to q
p
and ap-
prox. 2 bar at overload q
s
(applies for approx. 80 °C).
▪
The ultego III smart must be installed strainless into the
pipelines.
▪
Only use the rubber EPDM seals included in the ship-
ment!
▪
The meter is made of robust and very resistant material.
During installation, care must nonetheless be taken to
ensure that the maximum range of the tightening torque
of 10–25 Nm (for ¾" meter thread) and 20–50 Nm (for 1"
meter thread) is not exceeded, otherwise the meter
could be damaged! In the case of flush pipe joints it is
sufficient to turn the union nut through 120° from the
point of contact of the gasket with the union nut.
▪
A meter equipped with the ‘M-Bus’ option is delivered
with a two-core connection cable that can be extended
(fit junction box).
Installation instruction
WARNING!
Explosion risk
►
Do not heat the battery above 80 °C.
►
Do not throw the battery into fire.
►
Do not expose the battery to water.
►
Do not short-circuit the battery.
►
Do not open or damage the battery.
►
Do not charge the battery.
►
Do not weld or solder the battery
