Carrier 50YDV Installation, Operation And Maintenance Instructions

Carrier 50YDV Installation, Operation And Maintenance Instructions Manual pdf 15 page image

15R e s i d e n t i a l P a c k a g e d U n i t s - 6 0 H z P u r o n ®R e v. : 4 J a n . , 2 0 1 2Water QualityParameterHXMaterialClosedRecirculating Open Loop and Recirculating WellScaling Potential - Primary MeasurementpH/Calcium Hardness All - pH < 7.5 and Ca Hardness <100ppmMethodIndex Limits for Probable Scaling Situations - (Operation outside these limits is not recommended)Ryznar All - 6.0 - 7.5Stability Index If >7.5 minimize steel pipe use.Langelier All - -0.5 to +0.5Saturation Index If <-0.5 minimize steel pipe use. Based upon 66°C HWG andDirect well, 29°C Indirect Well HXIron FoulingIron Fe 2+ (Ferrous) All - <0.2 ppm (Ferrous)(Bacterial Iron potential) If Fe2+ (ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.Iron Fouling All - <0.5 ppm of OxygenAbove this level deposition will occur .Corrosion PreventionpH All6 - 8.5 6 - 8.5Monitor/treat asneeded Minimize steel pipe below 7 and no open tanks with pH <8Hydrogen Sulfide (H2 S) All- <0.5 ppmAt H2S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.Rotten egg smell appears at 0.5 ppm level.Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.Ammonia ion as hydroxide, chloride,nitrate and sulfate compounds All - <0.5 ppmMaximumMaximum Allowable at maximum water temperature.Chloride Levels10$C 24$C 38 CCopperCupronickel- <20ppm NR NR- <150 ppm NR NR304 SS - <400 ppm <250 ppm <150 ppm316 SS - <1000 ppm <550 ppm < 375 ppmTitanium - >1000 ppm >550 ppm >375 ppmErosion and CloggingParticulate Size andErosionAll<10 ppm of particlesand a maximumvelocity of 1.8 m/sFiltered for maximum841 micron [0.84 mm,20 mesh] size.<10 ppm (<1 ppm "sandfree” for reinjection) of particles and a maximumvelocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm,20 mesh] size. Any particulate that is not removed can potentiallyclog components.Notes: Rev.: 4/6/201115Application not recommended. 1R GHVLJQ 0D[LPXP&ORVHG5HFLUFXODWLQJV\VWHPLVLGHQWLILHGE\Dclosed pressurized piping system.5HFLUFXODWLQJRSHQZHOOVVKRXOGREVHUYHWKHRSHQUHFLUFXODWLQJGHVLJQFRQVLGHUDWLRQVAbove the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits belowScaling indexes should be calculated at 66°C for direct use and HWG applications, and at 32°C for indirect HX use.A monitoring plan should be implemented.Water Quality StandardsTable 3: Water Quality Standards