Safety Information; General Information; Installation - Ista Ultego III perfect Manual

ultego® III perfect

Safety information

Do not pick up by the electronic unit
Be careful of sharp edges (thread, flange, measuring tube)
Installation and removal must be performed by qualified personnel only
Mounting and unmounting are only permitted when the system is not under pressure
After installation, a tightness test must be conducted with cold pressure
Only ever use under service conditions, otherwise dangers can arise and the warranty may be voided
Breaking the calibration seal voids the warranty
The 110 V / 230 V versions must only be connected by an electrician
The lithium batteries must be properly returned
Lightning protection cannot be ensured; this must be provided by the building wiring
Only one compartment for the power supply must be equipped – do not remove the red locking hatch

General information

The electronic unit is plugged onto an adapter plate and can be separated by pushing the volume measuring unit upward.
The packaging should be kept so that the heat meter can be shipped in its original packing after the calibation period has
elapsed.
If the heat meter was not supplied with a battery connected, the current date and time must be entered during start-up (see
"Parameter setting").
The 110 V / 230 V power supply units comply with safety class II, so the line voltage does not need to be disconnected when
changing the unit.
All cables must be laid at a minimum distance of 300 mm from power cables or radio-frequency cables.
By overpressure, cavitation must be avoided in the entire measuring range, i.e. at least 1 bar at qp and approx. 3 bar at qs
(applies to approx. 80°C).
The heat meter left the factory in perfect safe condition. Calibration, maintenance, component replacement, and repairs must
only be performed by trained personnel who are familiar with the hazards involved. The manufacturer will provide further
technical support on request. Heat meter safety marks that are relevant for calibration must not be damaged or removed!
Otherwise the warranty and calibration validity of the device will expire.

Installation

Choose the mounting location (return or flow) in accordance with the labeling on the heat meter. Study the table for the
dimensions and check that there is enough clearance.
No inlet or outlet sections are necessary. However, if the heat meter is installed in the shared return of two heating systems,
e.g. heating and hot water, the mounting location must be a sufficient distance from the T element that forms the junction
(min. 10°x°DN) to allow the different water temperatures to mix well.
Before the heat meter is installed, the system must be rinsed thoroughly.
As shown in the examples on Page 2, mount the volume measuring unit horizontally or vertically between two shut-off valves
in accordance with the arrow for the direction of flow. The sensors must be mounted in the same heating circuit as the volume
measuring unit. For installation as a cold meter, see the following notes.
The sensor can be mounted in ball valves, in pockets or direct immersed. The end of the sensors must extend in any case as
far as the center of the pipe cross-section. Temperature sensors and screw joints must be sealed for protection from tam-
pering.
Small heat meters (qp 0.6 - 2.5 m³/h)
Overall length 110 mm
(thread)
G.83.0101
ultego® III perfect
ista International GmbH – Grugaplatz 2 – D-45131 Essen
Overall length 130 mm
(thread)
6.1 - 230608
Overall length 190 mm (thread)
Overall length 190 mm (flan-
ge)