Gree /E-X, Руководство по обслуживанию

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GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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Select built-in metal fittings in accordance with local regulations.
6) Installing Expansion Bolts
Use expansion bolts when built-in metal fittings are unavailable due to design change.
7) Installing Expansion Bolts
If the foot pedal is 2 m or more from the ground, there must be three points of support.
The foot pedal must be tightened securely with the ladder.
Do not perform operations on the top of the ladder.
(3) Shaping and Fixing of Pipes
When installing refrigerant pipes, ensure that the directions and branches are correct with minimum
length. Use minimum number of braze welding junctions and elbows. Alignment and insulation after
installation cannot affect the pipe location and elevation. There shall not be flat bending or corrugation on
the pipe after piping.
Use angle steel support, bracket, round steel hanger, U-type pipe clip, or flat steel to fix pipes
outside the insulation layer. It is better that the insulation materials be not compressed to ensure good
insulation.
The style and workmanship of supports, hangers, and brackets must follow the standard T616
HVAC Systems Design Handbook.
The minimum distance between supports, hangers, and brackets is listed in the table below:
External Diameter of the Pipe (mm)
Φ≤16
40>
Φ≥19.05 Φ≥40
Distance between Horizontal Pipes (mm) 1000 1500 2000
Distance between Vertical Pipes (mm) 1500 2000 2500
The pipe led through a wall or beam must be fixed by a support, hanger, or bracket on both ends at
the position 300 mm away from the hole.
(4) Pipe Connection
a) Flaring Connection
The refrigerant pipes and IDUs are connected by using the flare opening. Therefore, the quality of
flaring connection must be ensured. The flaring depth of the bell mouth cannot be smaller than the
caliber. The flaring direction must face towards the direction of medium flow. Use two torque wrenches to
fasten the connection
b) Socket Welding
The gap between socket components should be proper to ensure that the connection will not loose
from the friction surface. The flaring direction of the socket component must face towards the direction of
medium flow. During pipe connect, protect the braze welding part according the length specified below: