Installation

Mounting the product

Mount CMi6110 in either a L+G UH50 heat meter (FW ≥ 5.15) or L+G UC50 calculator (FW ≥ 8.06) by following the procedure below:

Caution

This is an ESD-sensitive product. Before and during installation, apply appropriate ESD protection measures and ensure that you are grounded (for example by touching the meter’s metal pipe or another metal part electrically connected to it).

  1. Insert a SIM card (size nano) in the SIM card holder (7).

    CMi6110_SIMcard_mounting_.jpg

  2. Open the meter housing. If possible, disconnect the meter power supply (battery or mains) and wait until the LCD display turns off.

  3. Apply ESD precautions. Make sure you are grounded (e.g., by touching the meter’s metal pipe or a metal part which is electrically connected to it).

  4. Install the module by gently pressing it into the module slot 2.

  5. Reconnect power (if disconnected) and wait until the meter LCD turns on and no errors are shown.

  6. Activate the module using the Elvaco OTC App, or by carefully pressing the button on the CMi6110 until the green LED lights up (see the activation section for details).

  7. Close and seal the meter housing.

Note

If the meter was previously battery-powered and already equipped with a module, please consider replacing the battery. If not, the remaining battery life cannot be predicted.

Connection of the antenna

CMi6110 supports either an internal or an external antenna, via its on-board MCX connector.

Note

The internal antenna is only an option for battery powered devices.

Connecting an internal antenna

  1. Remove the lid of the meter and place the antenna to the right of the module. The foam on the antenna will keep its position secured.

  2. Route the cable as shown in the image below:

    CMi6110_productimage_internal_antenna_.png

  3. Connect the antenna cable to the MCX antenna connector on the module.

Connecting an external antenna

  1. Remove the lid of the meter and connect an external antenna (provided by the supplier) with MCX connector to the module in the meter.

  2. Route the antenna cable. If necessary, make a hole in the rubber grommets in the meter bottom. The following image shows which hole to use for the antenna cable.

  3. Connect the antenna cable to the MCX antenna connector on the module.

    CMi6110_product_image_connections_.jpg

Caution

If using an external antenna, make sure to mount it at least 0.5 meters away from the meter in order not to cause interference.

Note

  • The rubber grommets may not be cut.

  • Punch a hole with a 3 mm diameter through the grommet. A 3 mm hex key (Allen key), for example, is a suitable tool.

  • Make sure to remove the strain relief (metallic clip) and do not remount it due to the risk of damaging the antenna cable. If you want to add additional strain relief, mount a cable tie on the antenna cable, close to the cable entry inside the enclosure.

Power connection

The CMi6110 can be either battery or mains powered. Before installing any of the options, read the instructions below carefully.

Connecting and mounting battery power

Follow the procedure below to connect the module battery. Note that the module uses a separate battery from the meter.

  1. Remove the red flap inside the meter.

  2. If the right compartment contains a power supply, remove that battery or power supply unit.

  3. For the meter supply, a Landis+Gyr WZU-BC+GUM battery must be inserted into the left compartment.

  4. Mount the Landis+Gyr WZU-NB-IoT-BAT (battery + holder) in the right compartment.

CMi6110_product_image_connections_.jpg

CMi6110 connections

Warning

To prevent accidental short circuits or damage to the internal fuse of the NB-IoT battery, do not use any conductive tools (e.g., metallic tweezers, pliers, etc.) when connecting the battery plug.

Caution

The battery that supplies the meter must be connected before connecting the CMi6110 battery.

Caution

Removing the meter’s red flap is only allowed for the purpose of replacing it with a battery. The battery holder (made of isolating material) replaces the function of the red flap. Once inserted into the meter it cannot be removed.

Note

Battery operation is available from FW 1.0.3. Current FW can be read via the Elvaco OTC App, or over LwM2M. Modules with earlier FW can be remotely updated.

Connecting and mounting mains power

  1. Remove the top cover of the Landis+Gyr UH50/UC50 enclosure. To expose the appropriate battery compartment, flip the red locking flap to the left compartment. Do not remove the red locking hatch.

  2. Grab the power supply and press it gently into position.

    Mounting_the_power_supply.jpg

  3. When the power supply has been placed into the correct position, secure the power cable (1).

  4. Remove the plastic seal to create hole (2) in the Landis + Gyr UH50/UC50 enclosure, and bring the power cable through that hole.

    Fixating_the_power_cable.jpg

  5. Connect the Landis + Gyr UH50 power connector (1) to the on-board connector of the module.

    Connecting_the_power.jpg

  6. Cut the wiring to a proper length and attach it to a mains plug. The power must be connected to a clearly marked and easily accessible switch (IEC 60947-1 and IEC 60947-3). This ensures that the product can be switched off during service work.

Warning

The installation must be performed by a qualified electrician or another professional with the required knowledge.

Caution

The power supply must be protected with a 10 A circuit breaker of characteristics C or slow blow fuse.

Activating the module

Upon delivery, the module is set to inactive mode, meaning no messages are transmitted. The module can be activated in one of the following ways:

Via the Activation at flow feature

  1. Make sure the module is configured with the Automatic activation at flow feature enabled. Use the Elvaco OTC App to check that the correct configuration is applied. To have the function enabled, Power mode should be set to Standby.

  2. Once the meter has registered sufficient water flow, the module will be activated and start delivering meter data. The module checks hourly for sufficient water flow.

Via the module push button

  1. Carefully press the device push button for at least five seconds.

  2. Release the button when the green LED lights up.

  3. Wait up to 10 seconds for the module to start.

Start-up is indicated by flashing red and green LEDs for one second.

Via Elvaco OTC app

  1. Open the Elvaco OTC App (available for Android and iOS).

  2. Scan the device (make sure NFC is enabled on the phone).

  3. Go to Apply mode.

  4. Set the power mode to Active.

  5. Select Apply settings.

  6. Scan the device again to apply new settings.

    To verify that it has been activated, go to Inspect, scan the device, and make sure that power mode is set to Active.

Tip

If the module is installed in the meter, the NFC field is most easily accessible by placing your smartphone on the lower right-hand side of the meter.

Connecting to the network

After activation, the module automatically connects to the NB-IoT network. A successful connection is indicated by the green LED lighting for 8 seconds, after which a meter readout is sent automatically.

If connection fails, the module retries automatically. A manual connection attempt can be triggered using the push button or the Elvaco OTC App.

LED indication_network_join_NBIot_.png

LED indications, network connection

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