Installation; Installation Notes; Examples Of Installation - Landis+Gyr ULTRACOLD T550 Technical Description

Installation

4 Installation

Installation Notes

Examples of installation

To install the meter proceed as follows:

Determine the place of installation in line with the inscription on the meter.
Note: At a heating meter or combined heating/cooling meter the
mounting place of the flow sensor cold side is equivalent to return
flow. The mounting place of the flow sensor hot side is equivalent
to flow.
Note: At a cooling meter the mounting place of the flow sensor
hot side is equivalent to the return flow. The mounting place of the
flow sensor cold side is equivalent to flow.

Observe the dimensions of the meter and check whether there is sufficient
space available.

Rinse the system thoroughly before installing the meter.

Fit the meter vertically or horizontally between two slide valves so that the
arrow on the housing and the flow direction match. Also observe the instal-
lation situations and the following examples of installation.

Fit the temperature sensors in the same circuit as the meter. Observe the
admixtures.

Seal the temperature sensors and the fittings to protect against manipula-
tion.

Loosen the elastic band or the cable tie, provided for the transport, from the
volume measurement unit. In operation, the temperature sensor and the
control cable should not depend directly on the volume measurement unit.

If you install the meter for cooling metering, follow the appropriate notes.
Inlet or outlet sections are not necessary. If you install the meter in the com-
mon return of two circuits, determine a place of installation with a minimum
distance of 10 × DN from the T-piece. This distance ensures a good thorough
mixing of the different water temperatures. You can install the temperature
sensors in T-pieces, ball valves, directly immersed or in pockets depending on
the version. The temperature sensor ends must reach to at least the middle of
the pipe cross section.
Note: During installation it must be ensured that no water can
enter the electronic unit during operation.
Ball valve
Fig. 9: Installation with a ball valve (recommended up to and including qp 6)
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