Master-Slave Operation: Setting Up Parallel Units - Trane Exergy S 180 Installation And Operation Manual

● Wired connection: Plug a network cable into the Tosibox unit's WAN port and the
other end into your internet connection port. Note that the local network connected
to the Tosibox WAN port cannot be accessed through Tosibox.
● Mobile USB modem: A mobile USB modem is required.* Plug the modem in the
Tosibox unit's USB port. Either disable the modem's PIN code query, set the PIN
to 1234, or enter the modem's PIN code in the Tosibox unit's settings. Note that
the USB modem's APN settings might need to be changed to meet your ISP's
requirements.
● Wi-Fi connection: Open the Tosibox unit's network settings (see the instructions
above). Select a Wi-Fi network, and enter the network's password. Note that after
this, Tosibox can no longer be accessed through its own Wi-Fi network, and its
settings can be changed only using a LAN cable.
* The modem can be obtained from us or from an external supplier. For a list
of compatible modems, see https://helpdesk.tosibox.com/support/solutions/
articles/2100033964-which-usb-modems-are-supported.
4.10 Master–Slave operation: setting up parallel units
Physical configuration
1. Start the circulation and open up all throttling valves to the fully open position.
a. If the circuit is capacity-controlled, make sure the system is running at the
maximum flow.
2. Measure the individual flows and compare to the specified flows.
a. If the flow notably deviates from the specified flow, search for the reason for this
deviation. Possible reasons can be the pump, filter, valves, pipe length, air, gas,
or dirt in the system.
3. To distribute the flow, start by reducing the flow, where necessary.
a. Measure and adjust all individual flows until correct distribution is achieved.
a. Keep at least one throttling valve fully open, unless the pressure drop is required
to feed a subcooler or other equipment.
Basic Master–Slave control can be activated through the heat pump user interface. For
a more thorough setup, use the Oilon Heat Pump Configurator.
Activating Master–Slave control through the user interface
To activate master and slave control:
In the master heat pump, open Control settings and select Slaves (see section
Control settings).
EXES01 2150EN
Note down all set and measured flows into a copy of the PI diagram.
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