407C
407c is a binary blend true or false?
False
R410A is also Called
Suva, AZ 20, Puron
Compression Ratio is?
Absolute discharge pressure divided by absolute suction pressure
R410A Tank is colored
Rose
The Compressor internal pressure relief (IPR) for R410A systems are set at?
550-625psig
What makes 407c like 410A
Its ability to fractionate
R410A was invented and Patented by?
Allied Signal now known as Honeywell
The Low Pressure control for R410A system will open at?
50psig
Subcooled liguid in the reciever will_______depending on the surroundings
Lose or gain subcooling
Evaporator or Indoor coil should be______when changing out an existing R22 system.
Replaced with a Coil that meets UL standard of 235psig
What is the boiling point for R407C
-43.8
R410A contains Flourine, True or False
True
Because of its higher vapor heat capacity, discharge temp is_____than R22
Lower
When a blend is zeotropic, or near-zeotropic it should be?
Transferred from cylinders as a liquid
The flow area of a R410A metering device is...
Smaller than that of R22 metering device.
What was R407C intended for?
Replace R22
Why cant R410A be used in R22 systems
40%-70% higher Pressures
Liguid line Filter Drier for R410A needs to be rated for?
600psig
The closer a blend comes to being a true azeotrope...
the less temperature glide it will have.
To charge a R410A system you should______to not damage the compressor?
Throttle refrigerant in to the low side.
What is the formula make up of R407C
R32 (23%), R125 (25%), R134A (52%)
The Boiling point of R410A is?
-48.5
R410A System use high pressure switch that will open at?
600psig plus or minus 10psig
When Charging a R410A system that uses a capillary tube metering device, the proper charge can be calculated by?
Superheat
To remove moisture from Polyol Ester lubricant you should...
Change the filter drier and evacuate to 500 microns