REFRIGERATION STRAINERS

Transcription

1 REFRIGERATION STRAINERS AC & R OIL FILTER - POE OIL FILTER-DRIER S-4004 AC&R Components S-4004 Oil Filter removes foreign material from the oil as it passes through the filter. The filter easily captures any debris that may be in the system, such as dirt, metal chips, etc. (particle retention 10 micron). The S-4004 is required on all Electronic Oil Level Controllers to protect the solenoid manifold. S-4005 The use of polyolester Oil (POE) is required for use with the new HFC refrigerants. However, there are some drawbacks. 1. POE oil is more hygroscopic. It absorbs moisture at a much greater rate than mineral oils. Moisture in any system can produce harmful conditions. 2. POE oil is a potent solvent, capable of cleaning up pipe scale, sludge, and other system contaminants In order to trap these contaminants and moisture, frequent changing of the liquid and suction line filter-driers is recommended. Because the contaminants and moisture can return with the POE oil to the compressor s crankcase, why not clean the oil at its source? AC&R Components, Inc. has developed the POE Oil Filter & Drier for POE oil return on systems using Oil Separators and Oil Control Systems. This is not a refrigerant Filter Drier. It is designed to operate at a very low pressure drop in a 100% oil environment. The New POE Oil Filter & Drier, Catalog No. S-4005, was designed to clean and dry POE oil as it is returned to the compressor crankcase or Oil Reservoir in parallel systems. Clean and dry POE oil assures the proper operation of the float assemblies in the Oil Separator and the Oil Level Regulators. The S-4005 POE Filter Drier features: 1. Extra large filter area: 325 sq. inches, to ensure cleanup of the oil. 2. Filled with 8 cubic inches of XH9 desiccant, the recommended desiccant for high moisture removal from POE oil. 3. High flow capacity with low pressure drop. 4. Same connection size as oil return line from Oil Separator (3/8-in.male flare). 5. UL approved. 6. No need to install multiple strainers to each oil level regulator. 7. Also for use with Alkybenzene and Mineral Oil. 8. Replace after 15 psig pressure drop. HENRY STRAIGHT-THROUGH STRAINERS NON-CLEANABLE Design Features: 1. Steel. 2. Stainless steel screen. 3. Maximum working pressure: 500 PSI (35 KG/CM²). 4. Temperature rating: -20 F (-29 C) to +300 F (+149 C). 5. Suitable for refrigerants and other industrial fluids non-corrosive to steel. PART NO. 891S-1/4 1/4 FLARE S-3/8 3/8 FLARE S-5/8S 5/8 ODS

2 REFRIGERATION STRAINERS HENRY ANGLE, FLANGED CLEANOUT BRASS SHELL & END CAP STRAINERS P383 ANGLE 866 ( ) MONEL REPLACEABLE SCREEN CARTRIDGE REINFORCED WITH 10 MESH BRASS SCREEN. SCREEN CARTRIDGES ARE SECURELY LOCATED BY MEANS OF SPRING TENSION, PREVENTING BY-PASSING OF REFRIGERANT. SCREEN DATA DIMENSIONS SIZE ODS FACE OF INLET CENTER TO CONNECTIONS MESH SIZE AREA LENGTH OVERALL TO CENTER OUTLET (sq. in.) LENGTH OF OUTLET FACE P/N 5/ /2 4-3/4 2-1/16 7-1/ /8 7/ /2 5-1/16 2-3/8 7-3/ /8 1-1/ /2 5-1/16 2-1/2 7-3/ /8 NOTE: *Dimension is the minimum space required to remove the cartridge from the shell. WATTS STRAINERS BRONZE. Y STRAINERS FOR WATER AND STEAM SERVICE. 20 MESH STAINLESS STEEL, OTHER OPTIONS AVAILABLE F, WSP F. 777S THREADED CONNECTIONS. S777S SWEAT CONNECTIONS. TAPED FOR CLOSURE PLUG (CLOSURE PLUG NOT INCLUDED). MAXIMUM PRESSURE RATINGS FOR SWEAT IS F AND REQUIRES 95-5 SOLDER (REF. ANSI B16.18) AND STEAM 15 PSI MAXIMUM. SIZE DIMENSIONS MFG P/N P/N A B C THREADED SWEAT THREADED SWEAT 1/ /8 NPT 1/2 777S 1/2 S777S WAT 1/2 777S WAT 1/2 S777S 3/4 3-5/16 2-5/16 3/4 NPT 3/4 777S 3/4 S777S WAT 3/4 777S WAT 3/4 S777S 1 4-1/2 2-15/16 3/4 NPT 1 777S 1 S777S WAT 1 777S WAT 1 S777S 1-1/4 5-1/8 3- I/8 3/4 NPT 1-1/4 777S 1-1/4 S777S WAT 11/4 777S WAT 11/4 S777S 1-1/2 5-7/8 3-1/4 1 NPT 1-1/2 777S 1-1/2 S777S WAT 11/2 777S WAT 11/2 S777S 2 6-3/16 5-7/8 1-1/4 NPT 2 777S 2 S777S WAT 2 777S WAT 2 S777S /8 6-1/16 1-1/2 NPT 3 777S WAT 3 777S /2 1-1/2 NPT 4 777S WAT 4 777S 740

3 REFRIGERATION STRAINERS PARKER COPPER STRAINERS/STRAINER DISTRIBUTORS Strainers are low cost filtration devices designed to protect refrigeration components, including valves, compressors and capillary tubes, from system contaminants. P4092 Key Features and Benefits Copper construction to resist corrosion. 500 psig design pressure. Available in a variety of inlet and outlet sizes. UL recognized (File SA-8570) and CSA certified (LR-87950). Proper selection of strainers is based on two parameters: 1. Maximum operating pressure 2. Contaminants present in the system. Maximum Operating Pressure Information regarding operating pressure is required to adequately size the wall thickness of the strainer to attain the ultimate burst pressure. In accordance with Underwriters Laboratories (UL) and Canadian Standards Association (CSA), the burst pressure for Parker strainers is rated as five times the design working pressure of the system. Listed in the catalog as design working pressure, this value can be correlated to tube diameter and wall thickness in order to meet specific UL specifications. Contaminants To determine the type and area of the screen, information about contaminants is needed. The size, type and cleanliness of the refrigeration system and its components, as well as the control of the assembly process, all determine the amount and size of the contaminants to be trapped by the strainer. The most common size of screen is 150 x 140 mesh which is used to protect capillary tubes. An extra large screen area should be selected if the strainer is expected to trap large amounts of foreign material. The large screen area will ensure there is enough area for passage of fluid without causing pressure drop. Recommended Screen Area SCREEN AREA (sq in.) LOW TEMP MED. TEMP R-12 & R-134a R-12 & R-134a 0 or Below 0 F or Above Strainer Screen Dimensions LOW TEMP R-22 AIR COND. R /8 hp 1/4 hp 1/8 hp 1/3 hp 1.8 1/4 hp 1/3 hp 1/3 hp 1/2 hp 2.2 1/3 hp 1/2 hp 1/2 hp 3/4 hp 2.3 1/2 hp 3/4 hp 3/4 hp 1 hp /2 hp 2 hp 1-1/2 hp 3 hp 6 2 hp 3 hp 2 hp 5 hp MESH DIAMETER OF WIRE PARTICLE SIZE MAXIMUM DIAMETER SCREEN MICRON MATERIAL SIZE % OPEN AREA 100 x s.s % 120 x brass % 150 x s.s % Strainer Dimensions PART NO. OVERALL LENGTH AREA (sq in.) INLET I.D. OUTLET I.D. SCREEN PS-2S /4 1/4 120 mesh brass PS-3S /8 3/8 120 mesh brass PS-4S /2 1/2 100 mesh stainless steel PS-5S /8 5/8 100 mesh stainless steel PS-7S /8 7/8 100 mesh stainless steel PS-9S /8 1-1/8 100 mesh stainless steel PS-11S /8 1-3/8 100 mesh stainless steel PS-13S /8 1-5/8 40 mesh stainless steel 741

4 REFRIGERATION STRAINERS PARKER COPPER STRAINERS/STRAINER DISTRIBUTORS 5/8 O.D. Copper Strainers Standard Products PART NO. DESIGN WORKING PRESSURE (psig) FILTRATION CAPACITY MICRONS SCREEN AREA (sq in.) INLET I.D. (B) OUTLET I.D. (C) OVERALL LENGTH (A) / /4 O.D. Copper Strainers PART NO. DESIGN WORKING PRESSURE (psig) FILTRATION CAPACITY MICRONS SCREEN AREA (sq in.) INLET I.D. (B) OUTLET I.D. (C) OVERALL LENGTH (A) /4 1/ /8 5/ /8 3/8 OD /8 3/ /2 1/2 OD /2 1/ /8 3/ P4093 P O.D. Copper Strainers Part No. Design Working Pressure (psig) STANDARD PRODUCT Filtration Capacity Microns Screen Area (sq in.) Inlet I.D. (B) Outlet I.D. (C) Overall Length (A) /8 1/ MODIFIED STANDARD see chart below P4095 Outlet Options Outlet No. of Holes Outlet No. of Holes , 2, 3, 4, 5, 6, / / / , 2, 3, 4, 5, 6, 8 3/ /2 1 NOTE: All 1-in. O.D. strainers are Underwriters Laboratories recognized file SA-8570, guide card SMGT-2 and Canadian Standards Association certified file No. LR Model Inlet Options Inlet No. of Holes 3/16 1 1/4 1, 2 5/16 1, 2 3/8 1 1/2 1 5/

5 REFRIGERATION STRAINERS PARKER COPPER STRAINERS/STRAINER DISTRIBUTORS 1-3/16 O.D. Copper Strainers Part No. Design Working Pressure (psig) STANDARD PRODUCT Filtration Capacity Microns Screen Area (sq in.) Inlet I.D. (B) Outlet I.D. (C) Overall Length (A) /2 1/ MODIFIED STANDARD see chart below P4096 Outlet Options Outlet No. of Holes Outlet No. of Holes , 2, 3, 4, 5, 6 1/ , 2, 4 5/ , 3, 4, 6 3/8 1, , 2 1/2 1 NOTE: All 1-3/16-in. O.D. strainers are Underwriters Laboratories recognized file SA-8570, guide card SMGT-2 and Canadian Standard Association certified file No. LR Model 319. Inlet Options Inlet No. of Holes 1/4 1 5/16 1, 2 3/8 1, 2 1/2 1 5/ /8 O.D. Copper Strainers PART NO. DESIGN WORKING PRESSURE (psig) FILTRATION CAPACITY MICRONS SCREEN AREA (sq in.) INLET I.D. (B) OUTLET I.D. (C) OVERALL LENGTH (A) /4 1/ / OD 5.44 NOTE: All 1-5/8-in. O.D. strainers are Underwriters Laboratories recognized file SA-8570, guide card SMGT-2 and Canadian Standard Association certified file No. LR Model P

6 REFRIGERATION STRAINERS A-1 STRAINERS Designed to trap particulates in the refrigerant to protect the system from clogging. Features: Available with 1, 2, 3, and 4 outlets. Inlet dimensions of 1/4 to 3/8. Outlet dimensions of to 3/8. Equipped with S.S. mesh screen. PRODUCT NO. INLET OUTLET NO. OF OUTLETS LENGTH ORDER NO. S-4 1/ / S-6 1/4 1/ / S-8 1/ S-84 1/4 1/ S-842 1/4 1/ S-86 3/8 3/ S-862 3/8 1/ S-132 3/8 1/ S-134 3/8 1/ S-136 3/8 3/ S-152 1/4 1/ S-154 1/4 1/ S-842D 1/ S-862D 3/ S-942D 1/ S-962D 3/ S-942T 1/ S-962T 3/ S-861Q 3/ S-942Q 1/ S-962Q 3/ P

7 PACKLESS VIBRATION ABSORBERS VIBRATION ABSORBERS Sixteen models available to fit copper tubing from 1/4 through 4-1/8 in. O.D. UL and CSA approved. Each unit pressure and vacuum tested, cleaned, dehydrated and sealed in plastic film. P4215 PART NUMBER TO FIT COPPER TUBING HAVING: Actual O.D. Nominal I.D. SHIPPING WEIGHT (lb) *UL and CSA approved for low side (suction side) use only. Flex Tubing I.D. A Tube End Length B DIMENSIONS Flex Tubing Length C Overall Length D Ferrule Length E UL STYLE NUMBER MAX WORKING PRESSURE (psig) BURST PRESSURE (psig) PAC-VAF-1 1/4 1/8 1/4 1/4 1/ /2 P PAC-VAF-2 1/4 1/8 1/4 1/4 1/2 6-1/2 7-1/2 1/2 P PAC-VAF-3 3/8 1/4 3/8 3/8 5/ /4 1/2 P PAC-VAF-4 1/2 3/8 3/8 3/8 3/4 7-1/2 9 1/2 P PAC-VAF-5 5/8 1/2 5/8 1/2 7/ /4 1/2 P PAC-VAF-6 3/4 5/8 5/8 1/ /2 P PAC-VAF-7 3/4 5/8 1-1/4 3/4 1-1/ /4 5/8 P PAC-VAF-8 7/8 3/4 1-1/4 3/4 1-1/ /2 5/8 P PAC-VAF-9 1-1/ / / /16 P PAC-VAF /8 1-1/4 2-1/2 1-1/4 1-5/8 11-1/2 14-3/4 1 P PAC-VAF /8 1-1/2 3-3/4 1-1/ /8 P PAC-VAF / / /2 P PAC-VAF /8 2-1/ / P PAC-VAF / / P PAC-VAF /8 3-1/ / /8 2 P * 525 PAC-VAF / / /8 2 P *

8 HEAD PRESSURE CONTROLS TOTALINE HEAD PRESSURE CONTROLS OPERATION The HeadMaster control is a three-way modulating valve controlled by the discharge pressure. At outdoor temperatures which cause the compressor discharge pressure to be above the head pressure control valve setting, there is no refrigerant flow through the B port of the valve. The flow is through the condenser and valve ports C and R, as shown in FIGURE A. P387 Maintains proper air cooled condenser pressures during periods of low outdoor ambient conditions. Without proper control of condensing pressure, poor refrigeration and component damage can occur. The Totaline HeadMaster control offers an efficient and economical approach to this common industry problem on air cooled condensers. The HeadMaster 3-way head pressure control valve eliminates the need for special piping or multiple control valves. As a single unit it simplifies piping and reduces the installation costs. PRECAUTIONS 1. The HeadMaster control should not be used on a system which does not have a liquid receiver or on one with a receiver which is too small. If the receiver does not have adequate storage space, the refrigerant will back up in the condenser to produce excessively high discharge pressures during high ambient air temperatures. This will cause system damage and/or personal injury. 2. The HeadMaster control should be used only on systems which employ a thermostatic expansion valve. 3. Good refrigeration practice states that the total system charge should not exceed 75% of the receiver capacity. 4. Condenser fans should not be cycled when using the Head- Master control. The sudden changes in high side pressure caused by fan cycling will result in erratic thermostatic expansion valve performance and shortened head pressure control life. FIGURE A As ambient air temperature falls, there will be a corresponding decrease in head pressure. When the discharge pressure fails below the valve setting, discharge gas will flow through the B port into the receiver, creating a higher pressure at the condenser outlet. The higher pressure at the condenser outlet reduces the flow from Port C and causes the level of condensed liquid to rise in the condenser, as shown in FIGURE B. The flooding of the condenser with liquid reduces the available condensing surface. The result is to increase the pressure in the condenser and maintain an adequate high side pressure. P273-2 P273-1 FIGURE B ADDITIONAL REFRIGERANT On most systems, an additional amount of refrigerant will be required. It is essential to have enough to completely fill the condenser for the lowest ambient condition. To accurately determine the amount of additional refrigerant charge required to fill the condenser, find the total length of condenser tubing in feet, and multiply by the number of pounds of refrigerant per foot for a given size tubing. Table #1 shows the liquid refrigerant per foot, per lowest winter temperature to be encountered. TABLE #1 - REFRIGERANT POUNDS PER FOOT* CONDENSER TUBE SIZE - O.D.** REFRIGERANT 3/8 1/2 5/8 AMBIENT TEMPERATURE ( F) R R R *Return bends: 3/8 O.D ft., 1/2 O.D ft., 5/ ft. **Wall thickness:.016-3/8 O.D.,.017-1/2 O.D.,.018-5/8 O.D. 746

9 HEAD PRESSURE CONTROLS HEAD PRESSURE CONTROLS FACTORY SETTING The HeadMaster control is factory set to provide an average condensing temperature consistent with good system performance. The complete type number includes the service reference code, port size, connection size and style, see FIGURE C. For sizing selection see Table #2. When ordering be sure to specify the complete type number. NOTE: Be sure valve is not required to operate at conditions exceeding maximum safe working pressure of 440 PSI. SERVICE REFERENCE CODE REFRIGERANT SERVICE SERVICE CODE CONDENSING TEMP. R-12 A 98 F + 6 deg. R-22 B R-502 B 95 F + 6 deg. FIGURE C CAPACITY AND SELECTION The nominal HeadMaster control capacity in tons is shown in Table #3 for R-12, R-22 and R-502. The nominal capacity is based on 100 F liquid, 40 F evaporator and the pressure drop shown. To obtain capacities in tons at other liquid and evaporator conditions, multiply the nominal capacity at the desired pressure drop by the factor in Table #4 given for the existing liquid temperature and evaporator temperature. TABLE #2 - SIZING SELECTION SERIES NUMBER P520-HP5 P520-HP8 P520-HP14 SIZE & STYLE CONN. REFRIGERANT R-12 R-22 & R-502 P/N 3/8 ODF P520-HP5T3-A P520-HP5T3-B 1/2 ODF P520-HP5T4-A P520-HP5T4-B 1/2 ODF P520-HP8T4-A P520-HP8T4-B 5/8 ODF P520-HP8T5-A P520-HP8T5-B 7/8 ODF P520-HP8T7-A P520-HP8T7-B 7/8 ODF P520-HP14T7-A P520-HP14T7-B 1-1/8 ODF P520-HP14T9-A P520-HP14T9-B 1-3/8 ODF P520-HP14T11-A P520-HP14T11-B Do not select a valve for a capacity rating exceeding 5 psi pressure drop from Port C to Port B or for a system with more than 20 psi pressure drop across the condenser. During normal ambient conditions the available liquid sub-cooling in the condenser shall be adequate to cover the existing pressure drop through the HeadMaster control. If a valve is selected for a given flow rate, the resultant pressure drop must not cause the liquid pressure to drop below saturation and produce flash gas. If sufficient sub-cooling is not available to cover this pressure drop, it is suggested that more than one valve be installed in parallel to reduce the pressure drop to tolerable limits (see FIGURE D). Do not parallel valves of different capacities. Liquid drain lines from the condenser to receiver are generally sized for a velocity of 150 ft./min. P274 FIGURE D TABLE #3 - NOMINAL CAPACITY (TONS)* REFRIGERANT PRESSURE DROP - PSI P/N P520-HP5 R P520-HP P520-HP P520-HP5 R P520-HP P520-HP P520-HP5 R P520-HP P520-HP14 *Based on 100 F liquid and 40 F evaporator.. TABLE #4 - MULTIPLIER FACTORS FOR CAPACITIES AT CONDITIONS OTHER THAN NOMINAL RATINGS LIQUID TEMPERATURE ( F) R-12 R-22 R-502 EVAPORATOR TEMPERATURE

10 PRESSURE REGULATORS TOTALINE CRANKCASE PRESSURE REGULATORS - CPR P525 - PART NUMBER SIGNIFICANCE D = DANFOSS E = IPR/EPR (EVAP) C = OPR/CPR (CC) H = CPCE L = LG (LIQUID MIXER) PORT DIA IN 1/8 06 = 3/4 10 = 1-1/4 CONNECTION SIZE IN 1/8 CONNECTION F = SAE T = ODF/ODM NOMINAL ADJUSTABLE PSIG RANGE A = 0-50 B = C = D = 0-60 E = 0-80 F = 0-85 G = 7-85 H = NON- ADJUSTABLE P388 The CPR crankcase pressure regulator is mounted in the suction line ahead of the compressor. Its purpose is to protect the compressor motor against overload due to high suction pressures during start up after long standstill periods (high temperature in the cold room) and after defrost periods. Type CPR makes it possible to use a small motor on low temperature systems. A smaller motor will, during normal operation, operate with improved efficiency, since the motor size is better suited to the load. At the same time the improved efficiency means that the motor does not overheat. This is important in the case of suction gas cooled hermetic and semi-hermetic compressors. PULSATION DAMPING DESIGN minimizes flow noise; extends regulator life. COMPACT ANGLE DESIGN for ease of installation. HERMETIC, brazed construction design, no synthetic o-rings, or gaskets to wear and leak. APPLICABLE TO R-12, R-22, R-502, and other fluorinated refrigerants. TECHNICAL DATA CPR 12, 15, 22 CPR 28, 35 *Other fluorinated refrigerants, for example R-500, can be used at the stated temperatures and pressures. **P-band = proportional band. Proportional band is the change in pressure required to move valve from full closed to full open position. ORDERING REFRIGERANTS R-12, R-22, R-502* R-12, R-22, R-502* REGULATION RANGE (psig) MAX. TEMPERATURE ( F) MAX. OPERATING PRESSURE (psig) MAX.TEST PRESSURE (psig) P-BAND** (psi) C v FACTOR GAL/MIN AT THE STATED P-BAND** 7 to to NOMINAL CAPACITY TONS* FLARE CONNECTION SOLDER CONNECTION R-12 R-22 R-502 SAE P/N ODF P/N CPR /2 P525-C06F04GD 1/2 P525-C06T04GD CPR /8 P525-C06F05GD 5/8 P525-C06T05GD CPR /8 P525-C06T07GD CPR /8 P525-C10T09GD CPR /8 P525-C10T11GD *Nominal capacity is the regulator capacity at: Evaporating temperature t o = +15 F Condensing temperature t k = +100 F Pressure drop in regulator p = 2 psi P-band for CPR = 20 psi. NOTE: The connections chosen must be too small in diameter since gas velocities in excess of 130 ft./sq. in the connector of the regulator can cause flow noise. 748

11 PRESSURE REGULATORS TOTALINE EVAPORATOR PRESSURE REGULATORS - EPR P525 - PART NUMBER SIGNIFICANCE D = DANFOSS P276 E = IPR/EPR (EVAP) C = OPR/CPR (CC) H = CPCE L = LG (LIQUID MIXER) PORT DIA IN 1/8 06 = 3/4 10 = 1-1/4 CONNECTION SIZE IN 1/8 CONNECTION F = SAE T = ODF/ODM NOMINAL ADJUSTABLE PSIG RANGE A = 0-50 B = C = D = 0-60 E = 0-80 F = 0-85 G = 7-85 H = NON- ADJUSTABLE The EPR evaporating pressure regulator is mounted in the suction line after the evaporator and is used for: 1. Maintaining a constant evaporating pressure and thus a constant evaporator surface temperature. Regulation is modulating. In the event of throttling in the suction line, the extracted quantity of refrigerant gas is matched to the evaporator load. 2. Protection against too low an evaporating pressure for example, as a safeguard against freezing up of a water chiller. The regulator closes when the pressure in the evaporator drops below the set value. Type EPR is highly suitable for these functions since it has a relatively small P-band and regulation accuracy even with large load variations. TECHNICAL DATA The drawing shows a EPR mounted in the suction line on a system having two evaporators. On systems where more than one evaporator is connected to the same compressor the EPR is mounted in the suction line from the evaporator in which the pressure is to be kept higher than the design suction pressure. The regulator will then throttle the suction gas from the required higher evaporating pressure to the design suction pressure. PULSATION DAMPING DESIGN minimizes flow noise; extends regulator life. COMPACT ANGLE DESIGN for ease of installation. HERMETIC, brazed construction design, no synthetic o-rings, or gaskets to wear and leak. APPLICABLE TO R-12, R-22, R-502, and other fluorinated refrigerants. *Other fluorinated refrigerants, for example R-500, can be used at the stated temperatures and pressures. **P-band = proportional band. Proportional band is the change in pressure required to move valve from full closed to full open position. ORDERING REFRIGERANTS REGULATION RANGE (psig) MAX. TEMPERATURE ( F) MAX. OPERATING PRESSURE (psig) MAX.TEST PRESSURE (psig) P-BAND** (psi) C v FACTOR GAL/MIN AT THE STATED P-BAND- EPR 12, 15, 22 R-12, R-22, R-502* 3 to EPR 28, 35 R-12, R-22, R-502* 0 to NOMINAL CAPACITY TONS* SOLDER CONNECTION SAE P/N R-12 R-22 R-502 ODF P/N EPR /2 P525-E06F04ED 1/2 P525-E06T04ED EPR /8 P525-E06F05GD 5/8 P525-E06T05ED EPR /8 P525-E06T07ED EPR /8 P525-E10T09ED EPR /8 P525-E10T11ED *Nominal capacity is the regulator capacity at: Evaporating temperature t o = +15 F Condensing temperature t k = +100 F Pressure drop in regulator p = 3 psi Offset = 8 psi. NOTE: The connections chosen must be too small in diameter since gas velocities in excess of 130 ft./sq. in the connector of the regulator can cause flow noise. 749

12 PRESSURE REGULATORS TOTALINE HOT-GAS BYPASS REGULATORS P525 - PART NUMBER SIGNIFICANCE D = DANFOSS P390 P277 E = IPR/EPR (EVAP) C = OPR/CPR (CC) H = CPCE L = LG (LIQUID MIXER) PORT DIA IN 1/8 06 = 3/4 10 = 1-1/4 CONNECTION SIZE IN 1/8 CONNECTION F = SAE T = ODF/ODM NOMINAL ADJUSTABLE PSIG RANGE A = 0-50 B = C = D = 0-60 E = 0-80 F = 0-85 G = 7-85 H = NON- ADJUSTABLE Hot-gas bypass Regulators are used to adapt compressor capacity to actual evaporator load. Capacity regulation by hot-gas injection at the evaporator inlet has the advantage that the thermostatic expansion valve reacts to the increased superheat of the refrigerant at the evaporator inlet, and injects the extra amount of liquid necessary to remove the superheat. This method avoids the installation of a special injection valve to cool the suction gas. Another advantage is that gas velocity in the evaporator is increased so that oil return is improved. This is especially important when the evaporator is positioned lower than the compressor. Hot-gas bypass regulators are installed in a bypass between the high and low pressure sides of the refrigeration system. When the load on the evaporator and the corresponding load on the compressor falls, the suction pressure of the compressor falls. This opens the regulator to produce a false load (replacement load) on the evaporator, in the form of hot-gas from the high pressure side. Hot-gas bypass regulators are especially suitable for hot-gas injection at the evaporator inlet, between the thermostatic expansion valve and the liquid distributor. Hot-gas bypass regulators are equipped with a control pressure connection for the refrigeration system suction line. In this way, the degree of opening of the regulator is directly determined by the compressor suction pressure, independent of the pressure drop on the evaporator side. Hot-gas bypass regulators are primarily designed for refrigeration systems with one evaporator. TECHNICAL DATA *Other fluorinated refrigerants, for example R-500, can be used at the stated temperatures and pressures. **Control pressure when the regulator begins to open. ORDERING REFRIGERANTS *Nominal capacity is the regulator capacity at: REGULATION RANGE (psig) MAX. TEMPERATURE ( F) Suction temperature t s = +26 F Condensing temperature t k = +100 F After a suction temperature reduction of t s = 6 F. MAX. OPERATING PRESSURE (psig) MAX. TEST PRESSURE (psig) 2, 15, 22 R-12, R-22, R-502* 7 to 85** NOMINAL CAPACITY TONS* FLARE CONNECTION SOLDER CONNECTION R-12 R-22 R-502 SAE P/N ODF P/N /2 P525-H02F04FD /2 P525-H02T04FD /8 P525-H03T05FD /8 P525-H06T07FD 750

13 PRESSURE REGULATORS DANFOSS HOT-GAS BYPASS REGULATORS, CPCE LIQUID-GAS MIXERS, LG DANFOSS HEAT RECOVERY REGULATORS, HEAD PRESSURE REGULATORS, KVR, DIFFERENTIAL PRESSURE VALVES, NRD TECHNICAL DATA A liquid-gas mixer type LG should be used for hot-gas injection. The object of the LG is to create a monogeneous mixture of the hot-gas from the CPCE regulator and the liquid from the thermostatic expansion valve so that the function of the liquid distributor (next in the system) remains unimpaired. REFRIGERANTS REGULATION RANGE (BEGINNING TO OPEN) (psig) OPENING DIFFERENTIAL PRESSURE P PSI BEGINNING COMPLETELY OPEN OPEN MAX. TEMPERATURE ( F) MAX. OPERATING PRESSURE (SWIP) (psig) MAX. TEST PRESSURE (psig) KVR 12, 15, 22 R-12, R-22, R-502* 70 to ** KVR 28, 35 R-12, R-22, R-502* 70 to ** NRD R-12, R-22, R-502* *Other fluorinated refrigerants, for example R-500, can be used at the stated temperatures and pressures. **Provided that the Schraeder valve is removed and the connector is sealed with seal cap and nut otherwise +200 F. ORDERING NOMINAL LIQUID CAPACITY (TONS) NOMINAL HOT-GAS CAPACITY (TONS)* FLARE CONNECTION SOLDER CONNECTION R-12 R-22 R-502 R-12 R-22 R-502 SAE P/N ODF P/N KVR / / KVR / / KVR / KVR / KVR / NRD 1/ *The rated capacity is the regulator capacity at evaporating temperature to = +40 F concerning liquid and 0 F concerning hot-gas, condensing temperature t k = +100 F and pressure drop across the valve p = 3 p. EXPANSION VALVE ODM CONNECTION FOR HOT-GAS ODM LIQUID DISTRIBUTOR ODF P/N LG 12/16 5/8 1/2 5/ LG 12/22 7/8 1/2 7/ LG 16/28 1-1/8 5/8 1-1/ LG 22/35 1-3/8 7/8 1-3/ The liquid-gas mixer type LG can also be used in connection with hot-gas defrosting or with reverse cycle systems. P392 P278 Regulator systems KVR + NRD are used to maintain a constant and sufficiently high condensing and receiver pressure in systems with heat recovery or in refrigeration and air conditioning systems with air-cooled condensers. During winter operation the ambient temperature falls and with it the condensing pressure of the air-cooled condenser falls. KVR-regulation is dependent on the inlet pressure. It begins to throttle when the pressure falls below the pressure setting. Consequently, the condenser is partially filled with liquid, so that the effective condensing surface is reduced. In this way the required condensing pressure is restored. Since the real regulation task during winter operation is to keep the receiver pressure at a suitably high value, KVR is combined with a differential pressure valve type NRD, which is sitted in the bypass line shown. NRD begins to open at a differential pressure of 20 psi. When the condensing pressure falls, KVR will begin to throttle. This increases the total pressure drop across the condenser + KVR. When this pressure drop reaches 20 psi, NRD will begin to open thus ensuring that the receiver pressure is maintained. As a rule of thumb, it can be assumed that the pressure in the receiver is equal to the set pressure of the KVR less 14 psi. During summer operation, when the KVR is fully open, the total pressure drop across the condenser and KVR is less than 20 psi. The NRD is therefore closed. To avoid inadvertent opening of the NRD the pressure drop across the condenser at max. load must not exceed 10 psi. If this pressure is exceeded, two NRD units can be used in series instead of one. During summer operation the charge can accumulate in the receiver. Therefore the system must be equipped with a sufficiently large receiver to store the excess refrigerant. 751

14 PRESSURE REGULATORS ALCO EPRB(S) BRASS BODY UPSTREAM REGULATOR This Evaporator Pressure Regulator is a new lightweight, energy-efficient pilot operated regulator. It is supplied with copper connections to allow easy installation into the system. The pilot operation is dependent upon high side system pressure which minimizes the pressure drop across the regulator. This regulator is of normally-open construction so that a manual operator is not required for system evacuation. A solenoid version having the suction stop is available as an option. ALCO EPRB(S) series regulators are pilot operated and designed to maintain a predetermined minimum inlet pressure. They are available in a S version for gas defrost applications. For information on other refrigerant applications please contact ALCO s Applications Engineering Department. FEATURES Energy efficient as it uses high side pressure for pilot operation, which minimizes system pressure drop. 25 lb. system pressure differential needed for valve operation. Uses copper line connections allowing installation with phos-copper alloy, i.e.: no flux. Can be installed without disassembly. Has a wide adjustment range (0-110 psig). Pilot connection available in 1/4-in. SAE or ODF. Easily disassembled to allow easy serviceability. Available with suction stop feature using a take-apart solenoid for additional serviceability. May be installed in either a vertical or horizontal refrigeration line. Pressure tap on inlet connection. External leak tested to less than 1/10 oz. a year. Corrosion resistant to 1000 hour salt spray. Reduced discharge to suction bleed. SPECIFICATIONS Maximum Working Pressure: 450 psig (3100 KPa). MOPD: 350 psi (2412 KPa) S version. Maximum Temperature: 250 F (121 C). S version for use with DMG, AMG or AMC coils only. EPRB(S) EXPLODED VIEW pg592b EPRB(S) REPLACEMENT PARTS When 1/4 ODF pilot repair kits are needed, the following repair kits should be ordered: EPRB Pilot Assembly KR50071 EPRB(S) Pilot Assembly KR ODF PILOT ONLY VALVE SIZE EPRB UPPER EPRB(S) UPPER SUB-ASSEMBLY SUB-ASSEMBLY 12 KR KR KR KR KR KR SAE & ODF SOLENOID ONLY GASKETS KR KR NOTE: Both the Bell/Piston Assembly and the Upper Subassembly Kits contain the main body gasket and spring. SAE PILOT ONLY VALVE SIZE BELL/ PISTON EPRB UPPER SUBASSEMBLY EPRBS UPPER SUBASSEMBLY 12 KR50045 KR50048 KR KR50046 KR50049 KR KR50047 KR50050 KR50056 PILOT ASSEMBLY SAE ONLY EPRB EPRB(S) KR KR

15 PRESSURE REGULATORS ALCO EPRB(S) BRASS BODY UPSTREAM REGULATOR EPRB(S) DIMENSIONAL DATA VALVE A B EPRBS 12 T 9 SAE PILOT 1-1/8 ODF VLC EPRBS 12 T 9 6-7/8 8-1/2 ODF PILOT 1-1/8 ODF VLC EPRBS 16 T 11 ODFPILOT 1-3/8 ODF VLC EPRBS 16 T /2 11-1/16 SAE PILOT 1-3/8 ODF VLC EPRBS 20 T 13 SAE PILOT 1-5/8 ODF VLC EPRBS 20 T /4 12-3/8 ODF PILOT 1-5/8 ODF VLC pg593 UL file number MP604 NOMENCLATURE Guide number Y10Z EPRB S 12 T 9 Valve Suction Stop Port Size Connection Style Connection Size Series (optional) (in 1/16 ) T = ODF (in 1/8 ) example Above: EPRBS 12T9 EPRB(A) EXTENDED CAPACITY TABLES EVAPORATOR TEMP. R-134a + 45 F + 35 F + 25 F + 20 F PRESSURE DROP ACROSS VALVE PSI VALVE EPRBS 12T EPRBS 16T EPRBS 20T EVAPORATOR TEMP. R-134a + 15 F + 10 F + 5 F + 0 F PRESSURE DROP ACROSS VALVE PSI VALVE EPRBS 12T EPRBS 16T EPRBS 20T EVAPORATOR TEMP. R F + 35 F + 20 F +10 F PRESSURE DROP ACROSS VALVE PSI VALVE EPRBS 12T EPRBS 16T EPRBS 20T EVAPORATOR TEMP. R F - 10 F - 20 F - 30 F PRESSURE DROP ACROSS VALVE PSI VALVE EPRBS 12T EPRBS 16T EPRBS 20T

16 PRESSURE REGULATORS ALCO EPRB(S) BRASS BODY UPSTREAM REGULATOR R404A/ R507 EPRB(A) EXTENDED CAPACITY TABLES EVAPORATOR TEMP F + 35 F + 20 F + 10 F PRESSURE DROP ACROSS VALVE PSI VALVE EPRBS 12T EPRBS 16T EPRBS 20T R404A/ R507 EVAPORATOR TEMP. + 0 F - 10 F - 20 F - 30 F PRESSURE DROP ACROSS VALVE PSI VALVE EPRBS 12T EPRBS 16T EPRBS 20T

17 PRESSURE REGULATORS ALCO ESR ELECTRONIC STEPPER REGULATOR The ESR is a direct driven suction regulator that uses a linear actuating bi-polar stepper motor to move the piston. The stepper motor is actuated by a voltage pulse to energize each of the motor phases and move the piston in discrete.001 inch increments. In individual cases, the ESR, along with appropriate control electronics, provides state-of-the-art temperature control within less that ± 1 F of the desired setpoint temperature. The ESR is compatible with many control electronics widely available in the market today. Applications for the ESR include case control, line-up and rack mounted control, as well as transportation applications on refrigerated trucks, trailers and containers. FEATURES No external sealing o-rings. Connections - 7/8 ODF (ESR 12) - 1-3/8 ODF (ESR 20) Removable external connector. Excellent repeatability. Corrosion resistant design. Solenoid tight shut-off. SPECIFICATIONS Operating temperatures: - Ambient: -40 F to 150 F - Refrigerant: -40 F to 140 F Maximum working pressure: 500 psi Linear actuating bi-polar stepper motor Direct drive with no hysteresis Two motors available Step rate: 50 ± 10 steps per second - 12 VDC - 24 VDC Steps full travel: steps (ESR 12) steps (ESR 20) of rated voltage Voltage tolerance: +10% and -15%.001 inch of linear travel per step Resistance (each phase): 29 ohms ± 10% (12 V) or 116 ohms ± 10% (24 V) NOMENCLATURE ESR T 7/11 12/24 V NC ELECTRIC POINT DIAMETER CONNECTION CONNECTION SIZE 12 VOLT/ NO EXTERNAL STEPPER IN 1/16 INCREMENTS T = ODF IN 1/8 INCREMENTS 24 VOLT CONNECTOR REGULATOR ESR-12 = 3/4 DIA. 7 = 7/8 BIPOLAR STEPPER ESR-20 = 1 1/4 DIA. 11 = 1 3/8 MOTOR ESR DIMENSIONAL DATA ESR 12 pg595e pg595b MTB-1 HAND-HELD STEPPER DRIVER Alco Controls provides a hand-held stepper driver to allow the user to verify the Alco ESR (or ESV) responds properly to known driver commands. Compact and easy to use, the MTB-1 and a common multi-meter are the only tools required to completely troubleshoot any Alco electronically driven product. ESR 20 pg595c 755

18 PRESSURE REGULATORS ALCO ESR ELECTRONIC STEPPER REGULATOR ESR EXTENDED CAPACITIES IN TONS R-22 EVAPORATOR TEMPERATURE ESR ESR ESR ESR ESR ESR ESR ESR R-404A/507 EVAPORATOR TEMPERATURE ESR ESR ESR ESR ESR ESR ESR ESR

19 PRESSURE REGULATORS ALCO ESR ELECTRONIC STEPPER REGULATOR ESR EXTENDED CAPACITIES IN TONS R-134a EVAPORATOR TEMPERATURE ESR ESR ESR ESR ESR ESR ORDERING INFORMATION FOR ESR DESCRIPTION ESR 12 T 7 12V NC ESR 12 T 7 24V NC ESR 20 T 11 12V NC ESR 20 T 11 24V NC ESR EXTERNAL MOLDED CONNECTOR 5 ESR EXTERNAL MOLDED CONNECTOR 22 MTB-1 HAND HELD CONTROLLER 757

20 PRESSURE REGULATORS PARKER PRESSURE REGULATING VALVES Features For R-22, R-502, R-404A, R-507 and other common refrigerants Pilot operated for close control at desired set point. Long life diaphragms. No bellows to fail. Lightweight and compact for easy handling. Sweat-in-place without disassembly for fast installation. In-line disassembly for fast service. Available with pilot electric shut-off or pilot electric wide opening. Excellent regulation at light load. Parabolic plug for precise regulation at reduced capacities. A8 Series Features Available for inlet, outlet or differential pressure control function. Dual set spring for smooth response from 10 hg to 400 psi. Low pressure drop 1-1/2 psi at rated capacity allows maximum compressor efficiency, saves energy. One valve handles high side or low side pressure control, reduces inventory. Controlled pressure remains constant within 1-1/2 psi of set point regardless of load fluctuations. Manual bypass opens regulator for quick pumpdown and ease in setting TXV superheat during startup. Furnished with access fitting for monitoring upstream system pressure. All servicing can be done with valve in line; A8 s required only top access. Interchangeable capacity cartridges for all A8 s. Stable drain control down to 20% of rated capacity when properly sized. Parker Type A8A 5/8-1-1/8 ODS Connections P4130 Parker Type A81S 1-1/8-2-1/8 ODS Connections P4131 A9 Series Features External or internal equalizer available. A9 for outlet control function; high pressure difference applications. P4132 Parker Type A82 1-5/8-2-5/8 ODS Connections Selection Guide REGULATOR FUNCTION APPLICATION A8A/A81/A82 Control inlet pressure Evaporator pressure regulator Discharge pressure regulator Liquid drain regulator A8AS/A81S/A82S Control inlet pressure with electric shutoff (defrost) Evaporator pressure regulator A8AB/A81B/A82B Control inlet pressure with wide opening (bypass) Evaporator pressure regulator Discharge pressure regulator A8AL/A81L/A82L Control differential pressure Discharge pressure regulator Liquid supply regulator Oil pressure regulator A8ABL/A81BL/A82BL Control differential pressure with wide opening (bypass) Discharge pressure regulator Liquid supply regulator 758

21 PRESSURE REGULATORS PARKER PRESSURE REGULATING VALVES P4133 Parker Type A81OE 1-1/8-2-1/8 ODS Connections P4134 Parker Type A9E Externally Equalized 5/8, 7/8 and 1-1/8 ODS Connections P4135 Parker Type A9SE Externally Equalized with Pilot Solenoid 5/8, 7/8 and 1-1/8 ODS Connections Condenser Pressure Regulating Applications Fig. 1 Liquid Drain Control Method Fig. 2 Discharge Gas Control Method NOTES: All capacities are in terms of cooling effect at evaporator, not heat rejected at condenser - CANNOT READ REST of manuscript page. Sizing Guide for Condenser Applications Size valve by effective port size. For Liquid Drain Regulator Applications (Fig. 1) Conditions: 3 psi Pressure Drop Type Effective U.S. Capacity in Tons Port R-12 R-22 R-502 A8A 5/8 Reduced A8A 5/8 Full A8A 7/ A81 7/ A81 1-1/ A81 1-3/ A82 1-5/ A82 2-1/ A82 2-5/ For Discharge Regulator Applications (Fig. 2) Conditions: 5 psi Pressure Drop Type Effective U.S. Capacity in Tons Port R-12 R-22 R-502 A8A 5/8 Reduced A8A 5/8 Full A8A 7/ A81 7/ A81 1-1/ A81 1-3/ A82 1-5/ A82 2-1/ A82 2-5/ For Conductor Bypass Regulator Applications (Fig. 1 and 2) Conditions: 0 F Ambient 10 psi Pressure Drop Type Effective U.S. Capacity in Tons Port R-12 R-22 R-502 A9 5/8 Reduced A9 5/8 Full A9 7/ A9 1-1/ For Alternate Condenser Bypass Regulator (Range A Only) Applications (Fig. 1 and 2) Conditions: 0 F Ambient 10 psi Pressure Drop Type Effective U.S. Capacity in Tons Port R-12 R-22 R-502 A8AL 5/8 Reduced A8AL 5/8 Full A8AL 7/ A81L 7/ A81L 1-1/ A81L 1-3/ A82L 1-5/ A82L 2-1/ A82L 2-5/

22 EVAPORATOR PRESSURE REGULATORS PARKER (S)PORT, (S)PORT II Ports 9 mm (3/8 ) to 35 mm (2-1/8 ) Nominal Features Pilot operated for close control at desired set point. Excellent regulation at light loads. Interchangeable capacity cartridges. Low pressure drop. Few moving parts. Long-life stainless steel diaphragms (no bellows to fail). Variations available for pilot electric shutoff and shutoff with electric wide-opening (bypass). Manual opening feature (except (S)PORT-B version). All service from the top. Sweat-in-place without disassembly. Furnished with access fitting. UL listed (except 50 hertz versions). Full open operates at less than 1 psig. Specifications Design pressure (M.R.P.): 31.0 bar (450 psig). Range: 250 mm hg to 8.3 bar (10 hg to 120 psig). Connections: 7/8, 1-1/8, 1-3/8, 1-5/8, 2-1/8, 2-5/8. (S)PORT-7-9 P

23 EVAPORATOR PRESSURE REGULATORS PARKER (S)PORT, (S)PORT II Parker Inlet Pressure Tap or Fitting Port Size in eights (ex: 7 = 7/8 ) S P OR T B 7 11 Electric Shut-Off Open on Rise of Inlet Pressure Bypass Feature or Wide Opening Connection Size in eights (ex: 11 = 1-3/8 ODS Available Port Sizes: 3/8, 5/8, 7/8, 1-1/8,. 1-3/8, 1-5/8, 2-1/8, 2-5/8 Available Connection Sizes: 7/8, 1-1/8, 1-3/8, 1-5/8, 2-1/8, 2-5/8 Selection Procedure This brochure has been developed for easy sizing and selection of the (S)PORT valve. Valve operation and parts information is available in the (S)PORT product Bulletin Selecting the proper port size EPR valve is relatively easy when using the capacity tables. Certain basic information must be known and some specific steps should be followed to ensure accurate port size selection. The following guidelines have been provided to help make the selection process simple. Coil Voltages: (24/60 24/50) (120/60 110/50) (240/60 220/50) (480/60 440/50) Specific operating conditions need to be known: 1. What is the refrigerant being used? 2. What is the medium flowing through the valve? (Suction vapor, hot gas, sub-cooled liquid, etc.). 3. How much is flowing through the valve? (Tons, btu/hr, MBH). 4. What is the valve inlet pressure or temperature? 5. What is the valve outlet pressure or temperature? 6. What is the liquid temperature to the evaporator? Once the preceding information is known, a selection from the capacity table can be made. (S)PORT Selection Table R-404A Low Temperature Effective Port Size (Port size designation in model #) Compr. Rack Case Evap Suction Temp ( F) Temp ( F) /8 (3) 5/8 (5) NOTE: Capacities are based on 100 F liquid, saturated evaporator and 10 F superheat at valve inlet (per ARI ). For each 10 F liquid is below 100 F, INCREASE capacity values by 6%. 7/8 (7) 1-1/8 (9) Valve Capacities MBH /8 (11) 1-5/8 (13) 2-1/8 (17) 761

24 EVAPORATOR PRESSURE REGULATORS DANFOSS EVAPORATOR PRESSURE REGULATORS INTRODUCTION KVP evaporator pressure regulators are mounted in the suction line of refrigeration and air conditioning systems. They are used to maintain a constant pressure corresponding to a constant temperature on the evaporator. They also protect against too low an evaporating pressure by throttling down when pressure falls below the set value. They are also used to differentiate the evaporating pressures in two or more evaporators in systems with one compressor. FEATURES Accurate, adjustable pressure regulation. Wide capacity and operating range. Pulsation damping design. Stainless steel bellows. Compact angle design for easy installation in any position. Hermetic" brazed construction. 1/4 in. Schrader valve for pressure testing. Available with flare and ODF solder connections. For use with CFC, HCFC and HFC refrigerants. APPROVALS UL listed, file SA7200. CSA approved. P4311 TECHNICAL DATA Refrigerants: CFC, HCFC, HFC Regulation range: 0 to 80 psig Factory setting = 29 psig Maximum working pressure: MWP = 200 psig Maximum test pressure: KVP 12 to 22: p = 410 psig KVP 28 to 35: p = 370 psig Maximum temperature of medium: 212 F* Minimum temperature of medium: 40 F* P band (full valve stroke): KVP 12 to 22 = 26 psi KVP 28 to 35 = 40 psi *If the Schrader valve cone is removed and the connector is sealed with cap and nut, the maximum temperature is 300 F and the minimum temperature is 330 F. P4311A 762

25 EVAPORATOR PRESSURE REGULATORS DANFOSS EVAPORATOR PRESSURE REGULATORS ORDERING RATED CAPACITY* (Tons) FLARE CONNECTION SOLDER CONNECTION R-22 R-134a R-404A/R-507 R-407C in. Code No in. ODF Code No. KVP /2 034L0021 1/2 034L0023 KVP /8 034L0022 5/8 034L0029 KVP /8 034L0025 KVP /8 034L0026 KVP /8 034L0032 *Rated capacity is based on: Evaporating temperature t e = 40 F Condensing temperature t c = 100 F Pressure drop across regulator p = 2 psi Offset (design evaporating pressure minus minimum allowable evaporator pressure) = 9 psi. KVP supplied without flare nuts. Separate flare nuts can be supplied: 1/2 in., code no. 011L1103 5/8 in., code no. 011L1167 NOTE: The connection dimensions chosen must not be too small, as gas velocities in excess of 130 ft/s at the inlet of the regulator can result in flow noise. CAPACITY Maximum Regulator Capacity Q e * R-22 PRESSURE DROP CAPACITY Q e IN TONS AT EVAPORATING TEMPERATURE t e F ACROSS REGULATOR p psi KVP KVP KVP KVP KVP Maximum Regulator Capacity Q e * PRESSURE DROP CAPACITY Q e IN TONS AT EVAPORATING TEMPERATURE t e F ACROSS REGULATOR p psi KVP KVP KVP KVP KVP *The capacities are based on: Liquid temperature ahead of expansion valve t l = 100 F Regulator offset p = 9 psi R-134a 763

26 EVAPORATOR PRESSURE REGULATORS DANFOSS EVAPORATOR PRESSURE REGULATORS CAPACITY (cont) Maximum Regulator Capacity Q e * R-404A and R-507 PRESSURE DROP ACROSS REGULATOR CAPACITY Q e IN TONS AT EVAPORATING TEMPERATURE t e F p psi KVP KVP KVP KVP KVP Maximum Regulator Capacity Q e * * The capacities are based on: Liquid temperature ahead of expansion valve t l = 100 F Regulator offset p = 9 psi R-407C PRESSURE DROP ACROSS REGULATOR CAPACITY Q e IN TONS AT EVAPORATING TEMPERATURE t e F p psi KVP KVP KVP KVP KVP Correction factors for liquid temperature t l t l F R R-134a R-404A/R R-407C Correction factors for offset OFFSET PSI KVP 12 KVP KVP 22 KVP KVP

27 EVAPORATOR PRESSURE REGULATORS DANFOSS EVAPORATOR PRESSURE REGULATORS Dimensions and Weights P4311B CONNECTION NV 1 NV 2 H 1 H 2 H 3 B 1 B 2 C DIA. D WEIGHT Flare Solder ODF (lbs) KVP 12 1/2 1/ KVP 15 5/8 5/ KVP 22 7/ KVP / KVP /

28 CONDENSER PRESSURE REGULATORS DANFOSS CONDENSER PRESSURE REGULATORS INTRODUCTION KVR condenser regulators can be mounted in either the gas or liquid side of the condenser in refrigeration and air conditioning systems. They are used to maintain a constant and sufficiently high condensing pressure with systems using air-cooled condensers. They can also be used with valve types NRD or KVD to assure that adequate pressure is maintained on the receiver. FEATURES Accurate, adjustable pressure regulation Wide capacity and operating range Pulsation damping design Stainless steel bellows Compact angle design for easy installation in any position "Hermetic" brazed construction 1/4-in. Schrader valve for pressure testing Available with flare and ODF solder connections For use with CFC, HCFC and HFC refrigerants Can be used as a relief valve from high pressure to suction side P4312 APPROVALS UL listed, file SA7200. CSA approved. TECHNICAL DATA Refrigerants: CFC, HCFC, HFC Regulation range: 70 to 250 psig Factory setting = 145 psig Maximum working pressure: KVR: MWP = 400 psig NRD: MWP = 400 psig Maximum test pressure: KVR: p' = 450 psig NRD: p' = 530 psig Maximum temperature of medium: KVR: 212 F* NRD: 275 F Minimum temperature of medium: 40 F P band (full valve stroke): KVR 12 to 22: 90 psi KVR 28 to 35: 72.5 psi Opening differential pressure for NRD: Fully open: p = 43 psi *If the Schrader valve cone is removed and the connector is sealed with cap and nut, the maximum temperature is 265 F. P4312A 766

29 CONDENSER PRESSURE REGULATORS DANFOSS CONDENSER PRESSURE REGULATORS CAPACITY Maximum regulator capacity Q e * CONDENSING TEMPERATURE t c ( F) *The capacities are based on: Evaporating temperature t e = 40 F For other evaporating temperatures, see correction table. LIQUID CAPACITY IN TONS (Evaporator Capacity) Offset 45 psi Pressure Drop psi HOT GAS CAPACITY IN TONS (Evaporator Capacity) Offset 45 psi Pressure Drop p psi R-22 R-22 KVR KVR KVR KVR KVR Maximum regulator capacity Q e * CONDENSING TEMPERATURE t c ( F) LIQUID CAPACITY IN TONS (Evaporator Capacity) HOT GAS CAPACITY IN TONS (Evaporator Capacity) Offset 45 psi Offset 45 psi Pressure Drop psi Pressure Drop p psi R-134a Correction Factors (Evaporating Temperature) t e F R R-134a R-404A R-407C R System capacity x correction factor = table capacity. R-134a KVR KVR KVR KVR KVR R-404A/R-507 R-404A/R-507 KVR KVR KVR KVR KVR R-407C R-407C KVR KVR KVR KVR KVR

30 CONDENSER PRESSURE REGULATORS DANFOSS CONDENSER PRESSURE REGULATORS DIMENSIONS AND WEIGHTS P4312B CONNECTIONS NV 1 NV 2 H 1 H 2 H 3 L L 1 B 1 B 2 C DIA. D WEIGHT Flare Solder ODF (lbs) KVR 12 1/2 1/ KVR 15 5/8 5/ KVR 22 7/ KVR / KVR / NRD 1/

31 HOT GAS BYPASS CAPACITY REGULATORS DANFOSS HOT GAS BYPASS CAPACITY REGULATORS INTRODUCTION KVC capacity regulators are used to adapt compressor capacity to actual evaporator load by supplying a replacement capacity in form of hot/cool gas. It is installed in a bypass line between the high and low pressure sides of the refrigeration system and is designed for direct gas injection into the suction line. FEATURES Accurate, adjustable pressure regulation. Wide capacity and operating range. Pulsation, damping design. Stainless steel bellows. Compact angle design for easy installation. Hermetic brazed construction. Available with flare and ODF solder connections. For CFC, HCFC and HFC refrigerants. P4313 APPROVALS UL listed, file SA7200. CSA approved. TECHNICAL DATA Refrigerants: CFC, HCFC, HFC Regulation range: 3 to 85 psig Factory setting = 29 psig Maximum working pressure: MWP = 400 psig Maximum test pressure: p' = 450 psig Maximum temperature of medium: 300 F Minimum temperature of medium: 40 F Maximum P-band: 29 psi P4313A ORDERING RATED CAPACITY* (Tons) FLARE CONNECTION SOLDER CONNECTION R-22 R-134a R-404A/R-507 R-407C in. Code No. in. ODF Code No. KVC /2 034L0141 1/2 034L0143 KVC /8 034L0142 5/8 034L0147 KVC /8 034L0144 *Rated capacity is based on: Suction gas temperature t s = 10 F Liquid temperature t l = 100 F Offset p = 10 psi KVC are delivered without flare nuts. Separate flare nuts can be supplied: 1/2 in. code no. 011L1103; 5/8 in. code no. 011L1167. NOTE: The connection dimensions chosen must not be too small, as gas velocities in excess of 130 ft/s at the inlet of the regulator can result in flow noise. If the temperature in the discharge gas line is too high according to the compressor specifications, it is recommended to install a liquid injection valve in a bypass from the liquid line to the suction line. P4313B 769

32 HOT GAS BYPASS CAPACITY REGULATORS DANFOSS HOT GAS BYPASS CAPACITY REGULATORS REPLACEMENT CAPACITY Maximum Regulator Capacity Q e * OFFSET REGULATOR CAPACITY Q TONS SUCTION GAS TEMPERATURE t s AFTER PRESSURE/TEMPERATURE REDUCTION F p psi R-22 KVC KVC KVC R-134a KVC KVC KVC *The capacities are based on: Liquid temperature ahead of the expansion valve t l = 100 F. Correction factors for liquid temperature t l When liquid temperature t l ahead of the evaporator is other than 100 F, adjust the table capacities by multiplying them by the appropriate correction factor found in the following table. t l F R R-134a System capacity x correction factor = table capacity. 770

33 HOT GAS BYPASS CAPACITY REGULATORS DANFOSS HOT GAS BYPASS REGULATORS REPLACEMENT CAPACITY Maximum Regulator Capacity Q e * OFFSET p psi *The capacities are based on: Liquid temperature ahead of the expansion valve t l = 100 F. Correction factors for liquid temperature t l When liquid temperature t l ahead of the evaporator is other than 100 F, adjust the table capacities by multiplying them by the appropriate correction factor found in the following table. REGULATOR CAPACITY Q TONS SUCTION GAS TEMPERATURE t s AFTER PRESSURE/TEMPERATURE REDUCTION F R-404A/R-507 KVC KVC KVC R-407C KVC KVC KVC t l F R-404A/R R-407C System capacity x correction factor = table capacity. SIZING For optimum performance, it is important to select a KVC valve according to system conditions and application. The following data must be used when sizing a KVC valve: Refrigerant: CFC, HCFC or HFC. Suction temperature at maximum compressor/evaporator load t s in F/psig. Minimum suction temperature t s in F/psig. Compressor capacity in tons. Evaporating load in tons. Liquid temperature ahead of expansion valve t l in F. Connection type flare or solder. Connection size in inches. 771

34 CRANKCASE PRESSURE REGULATORS DANFOSS CRANKCASE PRESSURE REGULATORS INTRODUCTION KVL crankcase pressure regulators are used to protect the compressor motor against overload experienced during startup after long off periods or just after defrost periods. They are installed in the suction line of refrigeration systems. FEATURES Accurate, adjustable pressure regulation. Wide capacity and operating range. Pulsation damping design. Stainless steel bellows. Compact angle design for easy installation in any position. Hermetic brazed construction. Available with flare and ODF solder connections. For use with CFC, HCFC and HFC refrigerants. P4314 APPROVALS UL listed, file SA7200. CSA approved. TECHNICAL DATA Refrigerants: CFC, HCFC, HFC Regulation range: 3 to 85 psig Factory setting = 29 psig Maximum working pressure: KVL 12 to 22: MWP = 200 psig KVL 28 to 35: MWP = 200 psig Maximum test pressure: KVL 12 to 22: p' = 405 psig KVL 28 to 35: p' = 370 psig Maximum temperature of medium: 300 F Minimum temperature of medium: 325 F Maximum P-band: KVL 12 to 22: 29 psi KVL 28 to 35: 22 psi P4314A 772