Carrier 09RH - Manuals

17 Table 12 — Compressor Ratings; R-507/404A LEGEND NOTES: 1. Shaded ratings require water-cooled heads, if the dis- charge temperature exceeds 275 F. 2. An oil cooler is recommended for all long stroke compressors (5H46, 66, 86, 126). 3. Oil cooler required when SST is below –20 F.4. Refer to Table...

19 Table 15 — Weight Distribution, Compressor Units (See drawing, Table 14) LEGEND NEMA — National Electrical Manufacturers Association *Oversize frame. Capacity Control — For all 5F,H compressors, a pressure-type cylinder unloader is used. On 5F20 and 5F30compressors, the capacity control valve is ...

20 Table 16 — Capacity Control Reduction Steps *Two controlled cylinders (to 33 1 / 3 %) available on request for 5F30. Principle of Operation of the System — An increase in suc-tion gas pressure, which requires increased compressorcapacity, causes the needle valve to close. Therefore, lubrica-tion ...

21 Table 17 — Initial and Final Unloading Oil Pressures — 5F20, 5F30 5F40 THROUGH 5H86 (Fig. 7)Major Elements of Capacity Control Systems: 1. Capacity Control Valve: Function is to raise or lower the control oil pressure to the hydraulic relay piston inresponse to refrigerant suction pressure. Incre...

22 5H120, 5H126 CAPACITY CONTROL (Fig. 8) — This ca-pacity control system is slightly different from the system on5F40 through 5H86 compressors. Unloaded starting and capac-ity reduction is obtained by holding open the suction valves ofa number of cylinders. For capacity control purposes, asuction-p...

23 Control Pressurestats — Dual pressurestats are furnished withall 5F,H compressors. They are often referred to as high- andlow-pressure cutouts. Their function is to cut the circuit to theholding coil of the compressor motor starter when pressuresetting limits are exceeded. The high pressurestat h...

24 2 2R* 1R 1 1L 3 2L 4 B D C E A * PUMP OIL PRESS. DUMP TOCRANKCASE OIL TO UNLOADERPOWER ELEMENTS *STEP 2R DOES NOT EXIST ON A 5F40 COMPRESSOR. NO HOLE IS REQUIRED AT POINT A FRONT VIEW BOTTOM VIEW HANDHOLE COVER (ALL PIPE PLUGS 1/8 NPT) FROM UNLOADERCONNECTIONS WHEN UNLOADING DESIRED,SOLENOID VALV...

25 CAPACITY CONTROL MODIFICATIONS FOR HEATPUMP APPLICATION — Where 5F40, 5F60, and 5H com-pressors are used in refrigerant cycle reversing heat pumpapplications, it is usually necessary to modify the standardcapacity control arrangement to satisfy unloading require-ments. On summer cycle, the compre...

26 Application Requiring 50% Capacity Reductions — This isthe usual specification for heat pump applications and shouldcover majority of cases. The necessary modifications to com-pressor capacity control can be accomplished by ordering thecompressor with factory modifications and then completingmodi...

27 The variety of systems using 5F,H compressors make it impractical to cover all aspects of hot gas bypass operation.The following guidelines will aid in determining the properapplication. The hot gas bypass valve is basically a pressure regulating valve installed to hold a constant compressor suct...

28 Table 20 — Belt Drive Packages LEGEND NOTE: Compressor shaft diameter before taper begins:5F20, 30 = 1.0 in.5F40, 60 = 1.5 in.All 5H = 2.0 DRIVE PACKAGE PART NUMBER COMPR SIZE HP FRAME SHAFT DIAM (in.) COMPR RPM CENTER TO CENTER (in.) FLYWHEEL PULLEY BELTS Pkg No. OD Pkg No. PD Pkg No. No. of Bel...

30 When a capacity safety factor is used, the compressor is selected at its maximum speed to handle design load plus safe-ty factor. Multiplying factors for non-standard speeds areshown in Fig. 20. Whether or not added capacity offered by the safety factor is incorporated at once is a matter of judg...

31 Table 23 — Booster “R” Factors Air-cooled (R-12 and R-22) Water-cooled (R-22 only) Determining Intermediate Pressure — In applica- tion of commercial compressors to staged systems, the lowesttotal bhp per ton and most economical equipment selectionresults when using approximately equal compressio...

32 Control Pressurestat for Booster Applica-tion — The standard dual pressure switch furnished with the 5F,H compressor cannot be used for booster application.Replace it with an appropriate low temperature dualpressurestat that can operate at values shown in Table 24. Anycommercial pressure switch i...

37 Table 28 — Booster Compressor Starting Data *Based on 1750 rpm with 5F,H compressors. Will vary directly with rpm at other speeds. CONDENSERS Condenser Physical Data — Refer to Table 29. Re- fer to 5F,H Product Data for information on the currentP701 water-cooled condensers used with the 5F,H wat...

39 Water Circuiting Arrangements — The water cir- cuiting arrangement selected for 5F and 09RH condensersdepends on available condenser water pressure, temperature,quantity and source. Refer to Table 32. Refer to the Carrier System Design Manual for specific information and recommendations for refri...

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. New PC 802 Catalog No. 510-509 Printed in U.S.A. Form 5F,H/09RH-2XA Pg 40 8-02 Replaces: 5F,H/09RH-1XA Copyright 2002 Carrier Cor poration Book 3 Tab DE1...