GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
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In the network above, L3 is the line for RJ45; L2 and L1 are the twisted pair line.
Notes: the total length of L2 cannot exceed 500m and a matched resistance shall be added at
both ends.
4.4.2 How to Configure the Gateway
Note: Before configuring BACnet, download JRE or JDK from the Oracle website first, which will
assist you in configuring BACnet via a browser.
One BACnet gateway can connect up to 8 ODUs and 48 IDUs (that is, when the IDUs are more than 48
or the ODUs are more than 8, another gateway will be required). Specific relation exists between the air
conditioning units and the gateway and there is always a minimal IDU number and a minimal ODU
number for a gateway. Suppose the minimal IDU number is M, then all IDUs will be numbered among M
to M+47. Suppose the minimal IDU number is N, then all IDUs will be numbered among N to N+7. During
field installation, when only IDUs or ODUs are present for a gateway, then it will fail to process the data
from them.
The gateway shall be configured after its installation, however, before this please set the IP address of
the PC the same with that of the BACnet gateway. See Appendix A for more details.
(1) Open the IE browser and input the default IP address http://192.168.1.150 into the address field.
(2) The default username and password are both ―Config‖.
After input, press the ―ENTER‖ button to go to the setting page as shown below. The configurable objects
include the minimum IDU number, the minimum ODU number, CAN IP, BACnet IP address, subnet mask,
and gateway address. Then, click the ―Confirm‖ button.
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