2.9.1
Biodegradability
The fluid shall not be less than 90 percent biodegradable.
2.9.2
Properties
The fluid shall conform to the following requirements, and tests shall be
performed in accordance with specified test methods on the fluid.
2.9.2.1
Flash Point
The flash point shall not be lower than 90 degrees C 194 degrees F,
determined in accordance with ASTM D 92.
2.9.2.2
Biological Oxygen Demand (BOD)
For 5 days the BOD, at 10 degrees C 50 degrees F, shall not exceed 0.2 gram
0.007 ounce oxygen per gram nor be less than 0.1 gram 0.0035 ounce oxygen
per gram.
2.9.2.3
Freezing Point
The freezing point shall not exceed [-9 degrees C 15 degrees F], determined
in accordance with ASTM D 1177.
2.9.2.4
Toxicity
The toxicity shall not be less than LD 50 (oral-rats) of 5 grams 0.175 ounce
per kilogram. The NFPA hazardous material rating for health shall not be
more than 1 (slight).
2.9.2.5
Storage Stability
The fluid, tested in accordance with ASTM F 1105, shall neither show
separation from exposure to heat or cold nor show an increase in turbidity.
2.9.3
Quality
The fluid, shall be homogeneous, uniform in color, and free from skins,
lumps, and foreign materials detrimental to usage of the fluid.
2.10
CHEMICAL FEED TANK
Construct of steel for minimum working pressure of 862 kPa (gage) 125 psi.
Provide chemical pipe, fittings, and valves as specified for water piping.
2.10.1
Aboveground Condenser Water Piping System
Add borate-nitrite corrosion inhibitors, acceptable to heat pump component
manufacturers, to initial fill water for heating and cooling water systems
in concentrations of [0.0039 liter/liter0.5 ounce/gal] of system water if
corrosion inhibitors are not contained in freeze protection solution in the
ground heat exchanger loop.
2.10.2
Chilled/Hot Water Piping System
Add borate-nitrite corrosion inhibitors, acceptable to heat pump component
manufacturers, to initial fill water for heating and cooling water systems
in concentrations of [0.0039 liter/liter0.5 ounce/gal] of system water if
SECTION 15741N
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