Tuesday, April 12, 2016
PRODUCT LAUNCH - R410A Air Conditioning System
R410A Refrigerant is used in small and medium commercial air
conditioning systems. When working on these systems, high nitrogen
pressures are needed to conduct leak and strength tests. Not all
nitrogen regulators available can deliver the required
pressures.
A leak test is required to be done at 3300 kPa, which is the
operating or working pressure and a strength test should be carried
out at 1.3 times this, at a nitrogen pressure of 4300 kPa. It is
clear from these pressures that a nitrogen regulator must be used
that can effectively deliver a pressure of 4,300 kPa to conduct the
strength test. This is causing some frustration for the HVAC
industry which previously has only been required to test other
refrigerant systems at much lower pressures and consequrently have
nitrogen regulators that cannot deliver these high pressures.
IMAGE 1:R410A
No regulator operates effectively at the upper limit of the
pressure range, this means that you would need a regulator with an
outlet pressure of between 4,000 and 5,500 kPa to conduct both the
leak and strength test.
IMAGE 2: Above- RI1SNI60 and Below -R410A
The Tesuco/Oxy Turbo high outlet pressure nitrogen regulator has
this range covered. With a maximum outlet pressure of 6000 kPa,
both the required pressures are well in the effective operating
range. It has a high flow rate of 150m3/hour, has a robust
construction, large easy to read pressure gauges, gauge protectors,
a 1/4 SAE flare male outlet, and shortly will include a 5/16 SAE
flare adaptor.
Mark Stadtmiller
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