SG Ready heat pump

This page describes the connection of an SG Ready heat pump via a Shelly 3EM or via a coupling relay to the SOLARWATT Manager.
Table of contents

    Compatibility

    EnergyManager proManager flex
    Connection option
    SG Ready heat pump
    • via Shelly 3 EM

    Information on the SG Ready interface

    Functionality

    The SOLARWATT Manager calculates the current PV surplus power (grid feed-in). If a (freely definable) value of excess PV power is reached, a potential free contact (coupling relay or O/I output of the Shelly 3EM) is switched, which activates the SG Ready interface of the heat pump and thus triggers the operating states according to 1-4.

    Interface assignment

    • the SG Ready interface consists of 2 inputs (terminals)
    • Inputs can be switched via a potential-free contact
    • this allows the following operating states of the heat pump to be realized:
    Terminal 1Terminal 2
    Operating state 1OnOffSwitch off heat pump (max. 2h)
    Operating state 2OffOffNormal operation
    Operating status 3OffOnStart-up recommendation for boosted operation (internal controller decides)
    Operating state 4OnOn

    Start-up command

    Variant 1: Switching on the heat pump

    Variant 2: Higher setpoint temperature or use of heating element

    Note

    For information on the technical design of the SG-Ready interface, please refer to the heat pump manufacturer's Installation instructions. Operating state 3 is selected as standard for PV Optimization operation. The heat pump is operated independently by the heat pump controller. Triggering operating state 3 does not necessarily lead to the heat pump starting up.

    Shelly 3EM for recording an SG Ready heat pump

    Number of connectable SG Ready heat pumps: 1

    Interface: WiFi (via Shelly 3EM)

    Applicable documents

    List of heat pump models with SG Ready label

    Connect devices: Shelly 3EM

    Danger

    Dangerous voltage
    Danger to life and health due to electric shock
    Shelly 3EM and the heat pump must be installed by a qualified electrician.

    • Connect the devices in a disconnected state.
    • Secure the system against being switched on again.
    • Only restore the 230 V mains voltage in the last step.
    • Install the SG Ready heat pump in accordance with the heat pump manufacturer's Installation instructions.
    • Configure the control of the SG Ready heat pump in accordance with the heat pump manufacturer's Installation instructions.
    • Install the Shelly 3EM so that the electrical power consumption of the heat pump is measured. Observe the manufacturer's Installation instructions.
    • Observe the installation direction of the current transformer terminals (see illustration below)
    • Connect the potential free outputs of the Shelly 3EM to the SG Ready interface of the heat pump
    • Information on the technical connection of the Shelly 3EM relay to the SG Ready interface of the heat pump can be found in the heat pump manufacturer's Installation instructions.
    Shelly 3EM Installation direction Current transformer terminals according to application
    Connection diagram SG Ready heat pump to Shelly 3EM

    Setup in SmartSetup

    • Start the Smart Setup

    Search for devices

    • Select Shelly in the Select or search for devices search field.
    • Enter the complete host name or the IP address of the Shelly. You can find the host name in the Shelly user interface, in the router user interface or using an IP scanner (note: a network scan requires the prior consent of your customer). Confirm Add device to search.
    • Click on Add device to search.
    • If necessary, add further devices (inverters, battery storage, etc.) to the search. You can find instructions on connecting additional devices under Connecting devices.
    • Click on Search and install devices.
    • After successful installation, the Shelly meter appears under Energy meter and Shelly device under Other devices.
    • Configure the Shelly meter by clicking on Select device type (field highlighted in yellow).
    • Configure the Shelly meter as device type: SG Ready heat pump.
    • Confirm the entry by clicking Select device type.

    PV optimization settings

    Additional settings are required to operate the device with a maximum proportion of solar power (PV optimization).

    The settings for PV optimization are made in the SOLARWATT Manager portal under Optimization.

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