Gree DC Inverter Multi VRF

DC INVERTER MULTI VRF CONTROL
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Mark C: Centralized controller cabinet is mainly used to put communication modules together. Refer to Section 3
Instruction to Installation Procedure of System about its figure and connection method of communication modules.
Mark D: Centralized Controller ZJ701. For the first use of it, address mapping setting must be made to specify
addresses of communication modules which should be controlled. In this project example there are 3 communication
modules with the address of 01, 02 and 03 which are displayed in the centralized controller correspondingly.
Mark S1, S2, and S3: Telephone 3-way triple adapters are used to connect communication modules with
communicating net of indoor and outdoor units. Refer to Section 3 Instruction to Installation Procedure of System for its
connection method.
3） Instruction to Installation Procedure of System
z Step 1: Integral Design of the Whole System.
In consideration of features of building and installation of the unit, the building is divided into a lot of monitoring
regions and then confirm required systems, their quantity and installation locations. As for this example:
A. Division of monitoring regions: According to needs of the users, the whole floor is divided into 3 monitoring regions,
south area (office 1-6), north area (assembly room1-2 and office 7-8) and monitor room.
B. Confirmation of quantity of systems
Name Qty Installation Location Notes
Communication
modules
3 Centralized control cabinet
The quantity required for the pinboards is the
same as communication modules. If no pinboard,
only one module is needed. So, there should be 3
modules in total.
Centralized control
cabinet
1 Monitor room Installed indoors according to user’s conditions.
Centralized
controller
1 Monitor room Installed indoors
z Step 2: Wiring and Installation
A. Centralized controller as extension function of GMV unit can be installed and debugged after communication
connection between outdoor unit and indoor unit and normal operation of the unit.
B. Make of centralized control cabinet
If a lot of communication modules are used, centralized control cabinet is recommended. Heavy current wires
and communication lines should be wired separately. The distance between them should keep above 15cm.The
following figure is an example of centralized control cabinet, but its design should be according to quantity of
communication modules.
Pinboard 1：
3-core neilsbed connects
with indoor unit or
modules, and 4-core
neilsbed with outdoor unit
Pinboard 2：
3-core neilsbed connects with indoor unit
or communication module and 4-core
neilsbed with outdoor unit