Landis+Gyr T450 Installation Instructions Manual Download Page 3

4.1 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 "PoS" 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 "F8" appears on the LCD.

Press button 1 briefly several times until "PoS" appears on

the LCD.

Briefly press button 2 to display the current installation

location. Depending on the installation location, "PoS Cold"

or "PoS Hot" is displayed.

To change the installation location, press button 1.
The display changes.

Press button 2 briefly until 

 appears on the LCD.

To complete the parameterisation, briefly press button 1

several times until "nb-----" appears on the LCD.

Press button 2 briefly to complete the change.

The change can be checked using the symbols (

 or 

)

on the LCD.

If necessary, adjust the temperature sensors according to

the installation requirements.

4.2 Installation recommendations

During installation, make sure that water cannot enter into

the calculator during operation.

Inlet or outlet sections are not necessary but are

recommended.

If you install the meter in the common return of two circuits,

select an installation location with a minimum distance of 10

× DN from the T-piece.

The temperature sensor ends should reach at least into the

middle of the pipe cross-section.

4.3 Installation examples

Figure 3: Integration with ball valve (recommended up to and

including DN 25)

Figure 4: Integration for circuit with admixture; placement of the

temperature sensors

Figure 5: Integration for circuit with throttle circuit, for example

(flow sensor in flow direction before the control valve/

differential pressure regulator)

4.4 Installation instructions for the adapter set (direct

immersion temperature sensor)

An installation set is included for meters with a Ø 5.2 × 45 mm

temperature sensor. This allows you to immerse the temperature

sensor directly in an installation piece or a ball valve, for example.

© Gyr

Subject to change without prior notice

07.02.2020

3

Summary of Contents for T450

Page 1: ...arantees Caution Comply with the requirements for circulation water CEN TR 16911 2016 Caution The meter is only suitable for circulation water in heating systems Caution The meter is not suitable for...

Page 2: ...ion corresponds to the return and the cold side installation location to the supply Proceed as follows to install the meter 1 Compare the installation location with the symbol on the LCD or to determi...

Page 3: ...Press button 2 briefly to complete the change The change can be checked using the symbols or on the LCD If necessary adjust the temperature sensors according to the installation requirements 4 2 Inst...

Page 4: ...e temperature sensors are horizontal or vertical Figure 7 Recommended installation position of cooling meters and combined heat cooling meters 5 Calculator The ambient temperature of the calculator mu...

Page 5: ...follows to change the battery If necessary open the battery compartment cover by loosening the screw Remove the old batteries from the battery compartment Insert the battery into the battery compartm...

Page 6: ...on Note No later than 60 seconds after installation the meter automatically detects the inserted modules and is ready for communication or pulse output 7 2 Terminal blocks 2 pin or 4 pin terminals are...

Page 7: ...be displayed without incorrect installation Error Incorrect flow direction negative Check whether the flow direction arrows on the volume meter correspond to the flow direction of the system If the di...

Page 8: ...necessary or Error in internal memory Change the device The measurements of the meter may no longer be used for legally calibrated billing Error code Error Information for Service F2 F3 F5 or F6 pers...

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