What is the purpose of a P trap on the suction line before the compressor?
A suction p-trap is a discharge line trap that serves an important function both when the compressor is on, and the act of cooling is occurring, and when the compressor is off. It’s a critical piece for proper and efficient operation of the equipment.
When should you trap refrigerant lines?
If the condenser is as much as 8 or 10 ft above the compressor, provisions should be made to trap the oil and refrigerant that might otherwise condense in the compressor heads when the compressors are stopped.
Which refrigerant line is high pressure?
Discharge Line
The high pressure refrigerant flows to the condenser by way of the “Discharge Line”. The condenser changes the high pressure refrigerant from a high temperature vapor to a low temperature, high pressure liquid and leaves through the “Liquid Line”.
What is the purpose of AP trap in refrigeration system?
The primary purpose of the P-trap in a plumbing system is to form an isolation seal between that system and the sanitary sewer, thereby preventing sewer gases and other contaminants from entering the building. For this application, the operating conditions are such that the P-trap provides an effective seal.
What is an inverted P trap?
Oil traps (P-traps) installed at the coil outlet, inverted P-traps where the refrigeration lines exit to the roof, and riser traps for risers of more than 20 feet, are crucial ingredients in a well-designed system.
What is refrigerant piping?
Refrigeration piping involves extremely complex relationships in the flow of refrigerant and oil. Fluid flow is the study of the flow of any fluid, whether it is a gas or a liquid, and the interrelationship of velocity, pressure, friction, density, and the work required to cause the flow.
Which is bigger suction line or liquid line?
Refrigerant Lines The larger line typically carries a cool gas and is insulated. This is commonly referred to as the suction line, but it is also called the return line or vapor line. The smaller uninsulated line typically carries a warm liquid. It is most often called the liquid line.
What is superheat and subcooling?
Superheat occurs when that vapor is heated above its boiling point. Condensation is when a vapor loses heat and turns into a liquid, but subcooling is when that liquid is cooled below the temperature at which it turns into a liquid.
What causes high pressure in AC?
Once the air gets to the condenser, it will remain at its top and not condense. The subcooled liquid seal at the condenser’s bottom will prevent the air from passing out of the condenser. This air and water vapor will take up valuable condenser surface area and cause high-head pressures.
Do I need ap trap for AC drain?
For the most part evaporator condensate traps are required by the manufacturer help to meet the energy efficiency standards as without it air will blow through that hole. If there is a trap tell them tho clean it all the time because it’ll clog and when it does they might call you.
What is AP trap in AC?
Why do I need P-traps for my refrigerant piping?
So, why do I need p-traps for my refrigerant piping? A suction p-trap is a discharge line trap that serves an important function both when the compressor is on, and the act of cooling is occurring, and when the compressor is off. It’s a critical piece for proper and efficient operation of the equipment.
How are high and low side of refrigerant piping tested?
The high side and low side of each completed refrigeration piping system must be pressure tested at a pressure not less than the lower of the system test pressure or the setting of the pressure-relief device protecting the high side or low side of the system as per approved specifications and manufacturer recommendation.
When do you use a suction P trap?
A suction p-trap is a discharge line trap that serves an important function both when the compressor is on, and the act of cooling is occurring, and when the compressor is off.
What should be the design of a refrigerant system?
designed and installed refrigerant piping system should: • Provide adequate refrigerant flow to the evaporators, using practical refrigerant line sizes that limit pressure drop • Avoid trapping excessive oil so that the compressor has enough oil to operate properly at all times • Avoid liquid refrigerant slugging • Be clean and dry