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R-407c. pages - HVAC-Talk Checking superheat or sub-cooling or figuring coil temperature on R-407c is different and can be confusing with the many chart styles and big a temperature glide Look at the three charts below at 40*f The 1st chart shows shows two corresponding pressures at 40*f Vapor pressure and liquid pressure
Discharge Superheat - HVAC-Talk discharge superheat is one of my favorite topics and checks it is the sum accumulation of the entire refrigeration system but, at the end of the day, it isn't a directly adjustable measurement no valve no knob nothing to adjust
Discharge Superheat - HVAC-Talk Sometimes referred to as compressor superheat, total superheat consists of evaporator superheat plus suction line superheat A technician can measure total superheat by placing a thermistor or thermocouple at the compressor's inlet and taking the temperature
IDEAL SUPERHEATS FOR WALK IN COOLERS FREEZERS - HVAC-Talk Good morning everyone! Just wondering if I could get some input on the ideal superheats for walk in coolers freezers in Fahrenheit? I work with both Celsius and Fahrenheit and alot of answers I found online just state "degrees" which isn't totally succinct Evaporator SH specifically
LOW SUB COOLING WITH HIGH SUPER HEAT - HVAC-Talk High suction superheat results when there is insufficient refrigerant to fill the evaporator properly If you have insufficient refrigerant in both places - it is likely that the system is undercharged
What is normal R22 superheat? - HVAC-Talk The correct answer is that there is no "normal" superheat Even if the system is TXV metered, the superheat could be vastly different from one system to the next If it is a txv metered system, you only want to check superheat to tell if the txv is operating properly, never to charge
Suction Superheat on a LT paralell Rack - HVAC-Talk I was having a little discussion about suction superheat at the suction header of a low temp rack yesterday (-10 -15F SST) The discussion was where does all the superheat come from? I know and have witnessed that if multiple cases are set well to an 8F degrees superheat at the evaporator
The theory of charging an R22 system without a TXV - HVAC-Talk Actually superheat = Suction line temperature – the refrigerant boiling point for the measured suction line pressure I’ve found different sources that claim this is the correct method including the manual for my condensing unit
Low Discharge Superheat - HVAC-Talk Do you understand where the discharge superheat comes into play and how it is monitored? Something is causing the discharge temperature to read "low", that is, lower than the expected setpoint minus the saturated temp pressure of the condenser That being said, the condenser temp sensor may be out of whack as well
Discharg Super heat - HVAC-Talk Discharge superheat is the temperature of the superheated gas leaving the compressor just clamp your thermometer in the discharge line, 6" away from the compressor The operating discharge temp should be 160F to 212F, a reading over 212F is an indicator of trouble, an old rule of thumb to figure the DS temp is: out side air temp plus 100 F= discharge super heat depending on the type of