Installation Requirements For Mrv-Link - Haier MRV5-H Service Manual

10.6 Installation Requirements for MRV-Link

(1). The connection requirements for wireless communication in MRV systems adopting MRV-link includes a
wired connection from the outdoor unit to the closest indoor unit which will be identified as the Master unit. The
master unit will be equipped with a master MRV-link module, and the remaining indoor units will be equipped with
Slave MRV-link modules. The ODU does not need to be equipped with a wireless module. The main IDU wireless
module(IGU09) needs to be installed, and the slave IDU wireless module (IGU10) are installed the other IDU.
(2) IDU wireless module installation requirements:
a. MRV-link modules can be ordered installed in the IDU from the factory. Be aware which IDU has the master
module and which IDUs are slave modules.
MRV-link modules ordered as an accessory need to be plugged into the CN34 port on the IDU circuit board.
b. The antenna of the IDU wireless module is rotatable. Keep the antenna more than 4 inches away from metals
c. Keep the IDUs with wireless module more than 33 feet away from the Wifi devices in the room.
(3) Repeater installation requirements
a. Add one repeater when the distance between any two wireless modules (both ODU wireless module and IDU
wireless module) exceeds 328 feet.
b. Add a repeater when there is one wall or other similar structure between any two wireless modules.
c. Repeater should be installed in the open space as much as possible, especially keeping the antenna more than
4 inches away from metals
d. Repeater must have it's own power supply provided by its own power adapter. Power supply and a dry area
should be a consideration when choosing repeater locations.
Note:
The quantity of repeaters needed should be established prior to installation to assure network reliability and
commissioning can proceed smoothly.
(4) Indoor unit installation requirements
a. Wireless communication systems should use a network structure rather than line-type structure.
b. Do not install indoor units in spaces surrounded by metal such as computer rooms and x-ray rooms.
c. Install indoor units utilizing MRV-link more than 33 feet away from WiFi devices.
CN34
Installation Location Diagram of IDU Wireless Module
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