Installation; Engineering Installation Preparation And Notice; Installation Materials Selection - Gree FGR20Pd/DNa-X Service Manual

GREE

INSTALLATION

1 Engineering Installation Preparation and
Notice
1.1 Installation notice
Personnel and property safety are highly concerned during the entire installation process. Installation
implementation must abide by relevant national safety regulations to ensure personnel and property
safety.
All personnel involved in the installation must attend safety education courses and pass
corresponding safety examinations before installation.Only qualified personnel can attend the installation.
Relevant personnel must be held responsible for any violation of the regulation.
1.2 Installation key points and importance
The system use refrigerant, instead of other agent, to directly evaporate to carry out the system heat.
High level of pipe cleanness and dryness is required in the system. Since various pipes need to be
prepared and laid out onsite, carelessness or maloperation during installation may leave impurities, water,
or dust inside refrigerant pipes. If the design fails to meet the requirement, various problems may occur
in the system or even lead to system breakdown.
Once the unit is energized and turned on for the first time, the display tube of outdoor unit displays
"A0", which indicates debugging standby status. At this time, hold SW3 button successively for 5s on the
main module to enter into the automatic debugging, and then the engineering debugging will perform
according to the set procedures. Step 3 (conformation of outdoor unit' quantity) and step 4
(conformation of indoor unit' quantity) should be confirmed manually by pressing "SW3", while other
procedures will be performed automatically. Once the debugging for each step is finished, "oC" will be
displayed; once all engineering debugging are finished, "oF" will be displayed, which indicates the unit is
under standby status.

2 Installation Materials Selection

The materials, equipment and instruments used during air conditioning engineering construction
must have certifications and test reports.Products with fireproof requirements must be provided with
fireproof inspection certificates and must meet national and relevant compulsory standards.If
environmentally-friendly materials are to be used as required by customers, all such materials must meet
national environmental protection requirement and be provided with relevant certificates.
Duct type split Air conditioner Inverter Series
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