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4. Multilink module installation requirements
(1)
Connection requirements for multilink technology communication systems
A mix-connection of wired and wireless communication is recommended for MRV systems utilizing wireless communications.
The master ODU connects to the nearest IDU ( Valve box ) by wire, and the remaining IDUs connect wireless subsequently. The
ODU does not require a multilink module. The first or closest IDU is equipped with the master (IGU09) multilink module, and
the remaining IDUs are equipped with slave (IGU10) multilink modules.
Note: The number of IDU communication addresses connected to the master IDU multilink module(IGU09) must be smaller than that of
other slave IDUs.
(2) Indoor Unit (IDU) multilink module installation requirements
a. Installation as an accessory: Connect module to port CN34 of the IDU PC board. The multilink module will be installed
at the factory if the IDU is ordered with the option.
b. The IDU multilink module antenna is rotatable. Keep the antenna 4 inches(10cm) away from metal surfaces.
c. Indoor units with multilink modules should be located 30 feet(10m) away other WiFi devices in the room.
(3) Repeater installation requirements
a. Add a repeater if the distance between any two multilink modules exceeds 330 feet(100m).
b. Add (N-1) repeaters if N walls exists between any two multilink modules. (N >=2)
Note: Do not need to add the repeater when there is only one wall between two multilink modules.
c. Repeaters should be installed in open spaces and with the antenna as far as possible from metals.
d. Repeaters must be powered by its power adapter and separate for any other devices. Installation locations should
consider 220v power source connection convenience.
Note: The number of repeaters should be calculated in advance. The stability and reliability of the multilink technology communication
system should be considered when selecting the quantity and location of repeaters.
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