Gree GC201808-III, Руководство по обслуживанию

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GREE GMV5 HR HEAT RECOVERY UNITS
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(2) Burrs and turn ups inside the pipe opening must be cleared.
(3) Install flaring nuts in the pipe before pipe flaring.
(4) The flared opening must be concentric with the main pipe. No eccentricity is allowed.
(5) Put the pipe into the root of the pipe expander.
(6) Longitudinal cracks cannot be generated.
1.3 Installation of Refrigerant Pipes
1.3.1 Operation Sequence
The sequence for installing the refrigerant pipe is as follows:
Preparing and installing the support, hanger, and bracket
– Piping according to the drawing –
Cleaning the pipe
→
Processing the pipe
→
Adding an insulation sleeve
→
Connecting the pipe
→
Fixing the
pipe
→
Blowing contaminants in the pipe system
→
Performing a air-tightness test
→
Performing insulation
1.3.2 Construction of Built-in Metal Fittings
(1) Construction of supports, hangers, and brackets for pipes
These parts must be fixed securely in reasonable type and style without any tilt. The surface is clean
without any dirt. The parts embedded into the wall or floor cannot be painted or coated and must be free
from grease stains.
(2) Construction of fixing bolts for devices
Ensure sufficient rigidity for the devices. Take anticorrosive measures for exposed part of built-in
fittings. If the foundation must be waterproof, takes waterproof measures.
(3) Construction of steel casings
Equip a steel casing for all pipes which are led through the wall or floor. Pipe welding joints cannot
be placed inside the sleeve. The steel casing must be parallel with the bottom of the wall or floor but be
20 mm(0.8inch) or more above the bottom. The diameter of the steel casing must be determined based
on the thickness of the insulation layer and the inclination degree of the condensate water pipe. Fill the
gap between the pipe and the sleeve with flexible and non-flammable materials. The sleeve cannot be
used as a support point of the pipe.
(4) Operation Sequence
Drawing of built-
in metal fittings
Making
ink lines
Installing built-in
metal fittings
If possible, make ink lines on the ground and project them to the top of the building.
(5) Installing Built-in Metal Fittings
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.