When should a suction line be drier?
The Emerson Advantage Compressor manufacturers recommend the installation of suction line filter-driers to protect their equipment from contaminants left in the system after a burnout.
What is a Biflow drier?
Bi Flow Driers bi-flow drier is designed specifically for heat pump or reverse cycle application. The core design filters out contaminant particles down to 25 microns. It’s powder paint exterior coating surpasses the 500 hour ASTM salt spray test and resists corrosion.
Can you use a liquid line drier on a suction line?
If the proper style drier is not available, then a suction line filter-drier can be used in the suction or liquid line; and a liquid line filter-drier can be used in the suction line. The pressure drop characteristics of the two types of driers are essentially the same for given line size.
Can you put a suction line drier on a heat pump?
THE SUCTION LINE DRIER LOCATION – A filter-drier should be installed in the suction line to clean up a heat pump after a severe hermetic motor burnout. First, make sure the burnout is “severe” by testing the acidity of the oil from the burned out compressor using the Sporlan TA-1 Acid Test Kit.
Where do you put a suction line filter drier?
Suction Line Filter-Driers and Suction Filters should be installed as close to the compressor as possible. If a suction vibration eliminator is used, the drier or filter should be installed upstream of it. Suction Line Filter-Driers and Suction Filters may be installed either in a horizontal or vertical position.
What are the two types of filter driers?
There are generally two main types of liquid-line driers. One is the straight-through sealed type and the angle replaceable core type. Both types offer protection in heating and cooling cycles and use the singular filter drier.
Are filter driers directional?
One drier is installed directly ahead of the expansion valve in the outdoor coil, and the other drier is installed directly ahead of the check valve that leads to the expansion valve on the indoor coil. Each of these locations has refrigerant flow in only one direction at all times.
What is the difference between a liquid line filter drier and a suction line filter drier?
The liquid line filter drier is often factory-installed and is installed near the expansion valve of the refrigeration unit. On the other hand, the suction line drier is often used after repair work is done after a motor blowout.
What is the purpose of a suction line filter drier?
The SLFD suction line filter-driers are designed to clean-up the system after a compressor burnout. It contains a solid core with desiccant and activated alumina to remove moisture and acid while filtering out contaminants. It also has access valves to measure pressure drop across the filter-drier.
Does filter drier size matter?
As there are usually several filter sizes available for a given connection diameter, the drying capacity is also a good selection criterion. For quick selection without further consideration of the drying capacity or liquid capacity, you should always choose a slightly larger drier.
What are the two types of filter-driers?
Where should filter drier be installed?
Standard driers are often installed directly ahead of the expansion device – one in the outdoor section and one in the indoor section. Another common design is to locate both driers in the outdoor section, where they are easier to service.
Can a filter drier be too big?
Yes, it is possible to have too large of a drier. This is especially true on small fractional horsepower cap tube refrigeration equipment. The drier can start to act as the metering device if too large.
What happens when you put a filter drier in backwards?
When installing a new filter drier, an arrow on the filter drier’s housing will indicate which direction refrigerant is designed to flow. If installed backwards, the filter drier will become useless.
How do I choose filter drier?
To select a suitable drier for a specific system, first consider the pipe diameter of the liquid line. As there are usually several filter sizes available for a given connection diameter, the drying capacity is also a good selection criterion.
What happens if you install a filter drier backwards?
What is a suction line filter drier?
Suction line filter-driers give excellent performance in removing water, dirt and acid. A larger size filter-drier is required than if it had been placed in the liquid line. The refrigerant velocity in the suction line is about six times the velocity in the liquid line.
What are the recommendations for suction line use of filter-driers?
Recommendations for suction line use of filter-driers are in Form 40-109. Form 40-109 is a quick reference guide for suction line filter- drier selection. Drier manufacturers establish ratings for their product, but…
What are the liquid line ratings and selection recommendations for filter driers?
Liquid Line Ratings and Selection Recommendations Sealed Type – Refrigerant 407C NOTE: The variation in flow ratings of filter-driers having the same size core and shell is caused by the difference in connection sizes used. TYPE SURFACE FILTERING AREA
Why is a larger size filter drier required?
A larger size filter-drier is required than if it had been placed in the liquid line. The refrigerant velocity in the suction line is about six times the velocity in the liquid line. Therefore, a larger filter- drier is required in order to maintain a sufficiently low pressure drop.