Water Quality Requirements - Carrier 50YFV Installation, Operation And Maintenance Instructions

R e s i d e n t i a l D i g i t a l P a c k a g e d U n i t s G T- P B S e r i e s - 6 0 H z P u r o n
Table 5: Water Quality Requirements
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
The Water Quality Table provides water quality requirements for coaxial heat exchangers. When water properties are outside of those requirements, an external
The ClimateMaster Water Quality Table provides water quality requirements for ClimateMaster coaxial heat exchangers. When water properties are outside of those
secondary heat exchanger must be used to isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the warranty for the coaxial
requirements, an external secondary heat exchanger must be used to isolate the heat pump heat exchanger from the unsuitable water. Failure to do so will void the
heat exchanger.
warranty for the coaxial heat exchanger and any other components damaged by a leak.
Notes:
Notes:
• Closed Recirculating system is identifi ed by a closed pressurized piping system.
• Recirculating open wells should observe the open recirculating design considerations.
Application not recommended.
• NR - Application not recommended.
• "-" No design Maximum.
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 Requirements

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 NR
<150 ppm NR
<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 A p r i l , 1 4
38 C
NR
NR
<150 ppm
< 375 ppm
>375 ppm
Rev.: 3/22/2012
23