Water Pipeline System Installation - Midea LSBLG MCF Series Technical & Service Manual

MCAC-CTSM-2018-1
Note:
(1) Pads must extend the full length of the saddle when an isolation pad is used.
(2) Level the unit to within 5mm of its length and width after absorbers are installed.
4).Spaces
Ensure sufficient space for maintenance:
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Place without the interference of sunlight or other kind of heat source.
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Place close to electrical source for wiring.
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Place on a solid base to prevent vibration and noise.
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Position in a clean, bright and well ventilated place.
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Place where it is convenient for piping and water drainage with the least influence on the
surroundings caused by noise, cold or hot wind.
2.

Water pipeline system installation

1) Water quality control
When industrial water is used as chilled water, a little furring may occur; however, well water or river
water, when used as chilled water, may cause much sediment, such as furring, sand, and so on.
Therefore, well water or river water must be filtered and softened using softening water equipment
before it enters into chilled water system. Sand and clay in the evaporator may block the circulation
of chilled water , and lead to freezing. If the hardness of chilled water is too high, furring may occur
easily, and corrode the devices. Therefore, the quality of chilled water should be analyzed, including
PH value, conductivity, and the concentration of chloride and sulfide ions.
1. Avoid NH4+ ammonium ions in the water, as they are very damaging to copper. This is one of the
most important factors for the service life of copper pipes. A content of several tenths mg/l will badly
corrode copper over time.
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2. Cl Chloride ions are damage, corrode and can perforate copper. If possible, keep below <50 ppm.
2-
3. SO sulphate ions can cause perforation corrosion. If possible, keep below <50 ppm.
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4. No fluoride ions (<0.1 mg/l).
5. If possible keep Calcium ion below <50 ppm.
2+ 3+
6. No Fe and Fe ions with non-negligible levels of dissolved oxygen must be present. Dissolved iron
< 5 mg/l with dissolved oxygen < 5 mg/l. If possible, keep below <0.3 ppm.
7. Dissolved silicon: silicon is an acidic element of water and can lead to corrosion. Content <30 ppm
8. Water hardness: Total hardness <50 ppm is recommended. This will facilitate scale deposits that can
limit corrosion of copper. A total alkalimetric titer (TAC) below 100 is desirable.
9. Dissolved oxygen: Avoid any sudden change in water oxygenation conditions. Do not deoxygenate
Flooded type water cooled screw chiller (MIC)
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