Water Quality Standards - Carrier 50YDV Installation, Operation And Maintenance Instructions

Table 3: Water Quality Standards
Water Quality
Parameter
Scaling Potential - Primary Measurement
Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below
pH/Calcium Hardness
Method
Index Limits for Probable Scaling Situations -
Scaling 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.
Ryznar
Stability Index
Langelier
Saturation Index
Iron Fouling
Iron Fe 2+ (Ferrous)
(Bacterial Iron potential)
Iron Fouling
Corrosion Prevention
pH
Hydrogen Sulfide (H S)
2
Ammonia ion as hydroxide, chloride,
nitrate and sulfate compounds
Maximum
Chloride Levels
Erosion and Clogging
Particulate Size and
Erosion
Notes:
Application not recommended.
R 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
HX Closed
Material Recirculating
-
All
(Operation outside these limits is not recommended)
-
All
-
All
-
All
-
All
6 - 8.5
All
Monitor/treat as
needed
-
All
-
All
Copper -
-
Cupronickel
304 S S -
316 SS -
Titanium -
<10 ppm of particles
and a maximum
velocity of 1.8 m/s
All
Filtered for maximum
841 micron [0.84 mm,
20 mesh] size.
closed pressurized piping system.

Water Quality Standards

Open Loop and Recirculating Well
pH < 7.5 and Ca Hardness <100ppm
6.0 - 7.5
If >7.5 minimize steel pipe use.
-0.5 to +0.5
If <-0.5 minimize steel pipe use. Based upon 66°C HWG and
Direct well, 29°C Indirect Well HX
<0.2 ppm (Ferrous)
2+
If Fe (ferrous)>0.2 ppm with pH 6 - 8, O2<5 ppm check for iron bacteria.
<0.5 ppm of Oxygen
Above this level deposition will occur .
6 - 8.5
Minimize steel pipe below 7 and no open tanks with pH <8
<0.5 ppm
At H S>0.2 ppm, avoid use of copper and copper nickel piping or HX's.
2
Rotten egg smell appears at 0.5 ppm level.
Copper alloy (bronze or brass) cast components are OK to <0.5 ppm.
<0.5 ppm
Maximum Allowable at maximum water temperature.
10 C 24 C
<20ppm
<150 ppm
<400 ppm <250 ppm
<1000 ppm <550 ppm
>1000 ppm >550 ppm
<10 ppm (<1 ppm "sandfree" for reinjection) of particles and a maximum
velocity of 1.8 m/s. Filtered for maximum 841 micron 0.84 mm,
20 mesh] size. Any particulate that is not removed can potentially
clog components.
R e v. : 4 J a n . , 2 0 1 2
38 C
NR NR
NR NR
<150 ppm
< 375 ppm
>375 ppm
Rev.: 4/6/2011
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