Landis+Gyr T450, Техническое описание

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Installation 10/36
5 Installation
Note: For a heat meter or combined heat / cooling meter, the
cold side installation location corresponds to the return and
the hot side installation location to the flow .
Note: For a cooling meter , the hot side installation location
corresponds to the return and the cold side installation loca-
tion to the flow .
Proceed as follows to install the meter:
•
Compare the installation location with the symbol on the LCD ( or ). If
necessary, adjust the installation location of the meter to match the condi-
tions (see chapter “Changing the installation location”).
•
Note the dimensions of the meter and check whether there is sufficient free
space.
•
Flush the system thoroughly before installing the meter.
•
Install the meter vertically or horizontally between two gate valves so that
the arrow on the body matches the flow direction. Please note the following
installation examples.
•
Install the temperature sensors in the same circuit as the meter.
•
Seal temperature sensors and screw connections to prevent manipulation.
•
Remove the rubber band from the volume measuring part. During opera-
tion, the temperature sensor cable and control line should not be in direct
contact with the volume measuring part.
•
If you install the meter as a cooling meter, follow the corresponding instruc-
tions.
Recommendation: If you install several meters, the same installation condi-
tions should apply to all meters.
Changing the installation location
Note: The installation location can be changed in the field if this
function has been enabled at the factory. This function locks after 5
changes and can then no longer be used. The entries can be
checked via the LCD loop "LE".
Note: Alternatively, you can change the installation location using
UltraAssist.
Note: If the symbol is not displayed, this function is
not available.
For meters with an adjustable installation location, the installation location can
be determined manually. Proceed as follows:
•
Press and hold the Service button (for more than 3 seconds) until "Para"
appears on the LCD.
•
Press button 2 briefly until appears on the LCD.
•
Press button 1 briefly several times until appears on the LCD.