Aaon LL-540 Bedienungsanleitung

LL Series Chillers and Outdoor Mechanical Rooms Installation, Operation & Maintenance FIRE OR EXP

10 1. Startup and service must be performed by a Factory Trained Service Techni

11 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB

12 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB0

13 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB

14 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB0

15 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB

16 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB0

17 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB

18 LL Series Feature String Nomenclature :SIZEVLTCONFIGA1A2A3A4B1B2B31A1B1C1D2345A5B5C6A6B6C7891011121314A14B151617181920212223LL– 0 7 5 – 3 – 0 –DB0

19 General Information AAON LL Series chiller outdoor mechanical rooms are complete self-contained liquid chilling units. They are ass

20 Outdoor Mechanical Room Failure to observe the following instructions will result in premature failure of your system, an

21 Scroll compressors must be on a minimum of 5 minutes and off for a minimum of 5 minutes. The cycle rate must be no more than 6 st

22 coupled together. The primary loop has a constant flow rate in order to keep the chiller heat exchanger from freezing, and the secondar

23 the building loop and circulates through the bypass water line. On the other hand, as the flow in the secondary loop increases above the flow i

24 all fluid has exited the diaphragm area and proper charging will occur. If the pre-charge adjustment is necessary, oil and water free compress

25 and after the pump. There is also a needle valve at each of these points to isolate the pressure. To measure the pressure at any given

26 Installation Outdoor Mechanical Room Placement The AAON LL Series is designed for outdoor applications and mounting at ground level o

27 Figure 4 - Steel Mounting Rail with Dimensions Table 2 - Mounting Dimensions Tons A B C D 35-115 (Scroll) 100” 96” 92” 97” 125-365 (Scroll) 14

28 Figure 6 - LL Series Lifting Detail Lifting slot locations are unit specific. Unit must be rigged at all marked lifting points. Water Connecti

29 Gas Connection For LL Series outdoor mechanical units with boiler systems, size gas piping to supply the unit with proper press

3 Table of Contents Safety ...

30 sheet metal screws, locate the exhaust piping that is also shipped along with the unit. The exhaust piping that must be attached to the internal

31 Figure 10 - Incorrect Vent Pipe Connection Stop bead on male end must be pushed directly against the flared end of the female end. When

32 modulates to bypass discharge gas around the condenser. The discharge gas warms the liquid in the receiver and raises the pressure to the v

33 Figure 12 - Piping Schematic of Example System using the OROA Valve. ORI/ORD Valves This system uses a two valve arrangement. The head pressur

34 Figure 13 - Piping Schematic of Example System using the ORI/ORD Valve. The pressure setting of the ORI valve determines how well the

35 Table 4 - Condenser Flooding PERCENTAGE OF CONDENSER TO BE FLOODED Ambient Temperature (°F) Evaporating Temperature (°F) 0° 10° 20° 30° 35° 40° 4

36 Figure 14 - Terminal Block Startup technician must check for proper motor rotation and check fan motor amperage listed on the motor

37 penetrating into the building. Any piping through the base should go through a field cutout in this cap. The pipes must be sealed to the c

38 Startup (See back of the manual for startup form) Before the startup of the chiller and boilers be sure that the following ite

39 Axial Flow Condenser Fans Multi-Wing Z Series Aluminum Fan Blade Pitch Angle Setting Instructions 1. Maintain the balance of fan Mark

4 E-Coated Coil Cleaning ... 47 Recommended

40 5. Determine whether the pin is in the HUB or RET Figure 19 - Fan HUB and RET Castings 6. Determine the current blade pitch and the pin loca

41 7. Replace fan blades in the new pin location and reassemble the fan Replace the blades with the pin in the 1, 2, 3, or 4 groove position

42 Maintenance General Qualified technicians must perform routine service checks and maintenance. This includes reading and recording the c

43 system with an expansion valve liquid sub-cooling is more representative of the charge than evaporator superheat but both measurements must b

44 set with one compressor running. The suction superheat should be 10-13°F with one compressor running. The suction superheat will i

45 in the summer when the ambient temperature is cold: Once enough charge has been added to get the evaporator superheat and sub-cooling v

46 Table 11 - R-410A and R-22 Refrigerant Temperature-Pressure Chart F PSIG F PSIG F PSIG F PSIG F PSIG R-410A R-22 R-410A R-22 R-410A R-22 R-

47 Lubrication All original motors and bearings are furnished with an original factory charge of lubrication. Certain applications require b

48 Quarterly cleaning is essential to extend the life of an e-coated coil and is required to maintain coating warranty coverage. Coil clean

49 corrosion, sludge build-up and biological fouling. A water treatment monitoring and control system has been furnished with this unit. B

5 Horizontal and Vertical Expansion Tanks ... 72 Suction Guides ...

50 Figure 23 - Improper Unit Locations Performance Improper location of the evaporative-cooled condenser may seriously degrade the capacity of

51 ready to connect to the piping. Rotate the shaft periodically (At least monthly) to keep rotating element free and bearings fully fun

52 If the water in the sump is below the low probe, it will not allow the condenser pump or the sump heater to operate. It will activate the mak

53 aluminum, ABS plastic and PVC. Batch feed processes should never be used as concentrated chemicals can cause corrosion. Never use hydr

54 will change the speed of the VFD to maintain 195 psig. The unit controller will monitor the sump temperature and if it exceeds 105°F

55 should be made with the circulation pump on and fans off. Mist Eliminators The mist eliminators must be correctly positioned when th

56 rejected), if the bleed setting is manual based on design heat load, too much water will be removed when the heat load is less that design.

57 Replacement Parts Parts for AAON equipment may be obtained from AAON at www.aaonparts.com. When ordering parts reference the unit serial num

58 Appendix - Water Piping Component Information Water Pressure Reducing Valve Water Pressure Reducing Valves are designed to reduce incomin

59 Capacity Maintenance Instructions To clean strainer remove the bottom plug and pull out strainer. Adjustment To adjust pressure sett

6 Index of Tables and Figures Tables: Table 1 - Service Clearances...

60 Water Pressure Relief Valve Overview ASME Rated, Design Certified and Listed by C.S.A. Used for protection against excessive pressure

61 Operating Range: Minimum working pressure: 1.45psi (10 kPa) Maximum working pressure: 150psi (10 bars) Temperature Range: 33°F – 240°

62 Maintenance No maintenance is normally necessary. However, if the FV-4M1 is disassembled for inspection or cleaning it is important

63 Where under normal operating conditions the limit of 68°C/155°F (Restricted Zone) for normal touch, or 80°C/176°F (Unrestricted Zon

64 Pump Piping - General The discharge valve only is to be used to throttle pump flow, not the suction valve. Care must be

65 into the units of the pump head as stated on the pump nameplate and compare the values. Should the actual pump operating head be signif

66 Mechanical Seal Mechanical seals require no special attention. The mechanical seal is fitted with a flush line. The seal is flushed fr

67 Noise Levels Estimated Pumping Unit Sound Power Level, Decibels, A-Weighted, at 1 m (3 ft.) from unit. Vibration Levels Vertical In-Line pumps

68 2. Fill the dry casing with system fluid by opening the seal flush line interconnecting valve and the air vent fitting. 3. Allow the pr

69 locates in the recess on the locking handle (3). 5. Loosen set screw (11) and raise locking arm (3) to the vertical position, locking the

7 Safety ELECTRIC SHOCK, FIRE OR EXPLOSION HAZARD Fail

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72 Horizontal and Vertical Expansion Tanks ASME PRE-PRESSURIZED DIAPHRAGM EXPANSION TANKS FOR HEATING & COOLING SYSTEMS Vessel Description Tank

73 Suction Guides Introduction Suction Guides are designed for bolting directly onto the suction flange of horizontal or vertical shaft cent

74 Temporary strainer must be removed following system clean up. After all debris has been removed from the system, or a maximum of 24 running h

75 The flow rates from the unit are designed for make-up rates. It is therefore suggested that the system is back-filled with due precautions t

76 6. Repeat for standby pump (where fitted). 7. Close the system-isolating valve. 8. Open suction isolating valve. 9. Switch on unit, initially

77 Table A1. Armgrip Flange Adapter Details Valve Size 125 psi/150 psi 250 psi/300 psi Ductile Iron Bolt Ductile Iron Bolt No. Size No. Size 2-1/

78 Step 1. Measure and record the differential pressure across the valve. Step 2. With valve in fully open position, locate the diffe

79 From the flow characteristic curve, a 4 inch valve at 50% open represents 34% of maximum flow. The approximate flow of a 4 inch valve with

8 FIRE, EXPLOSION OR CARBON MONOXIDE POISONING HAZA

80 Pressure-Temperature Limits Flo-Trex Cross Section 1. Body Main 2. Eye Bolt 3. Shaft 4. Spring 5. Spacer 6. Disc 7. Seat 8. O ring body 9. Bod

81 LL Series Startup Form Job Name:_______________________________________________ Date:______________ Address:_________________________________

82 Water/Glycol System 1. Has the entire system been flushed and pressure checked? Yes No 2. Have isolation valves to the chiller been in

83 Compressors/DX Cooling Check Rotation Number Model # L1 L2 L3 Head Pressure PSIG Suction Pressure PSIG Crankcase Heater Amps 1 2

84 Refrigeration System 4 - Cooling Mode Pressure Saturated Temperature Line Temperature Sub-cooling Superheat Discharge N/A N/A Suction N/A

85 Condenser Fans Alignment Check Rotation Nameplate Amps________ Number hp L1 L2 L3 1 2 3 4 5 6 7 8 9 10

86 Boilers Boiler Water In Temperature ________°F Boiler Water Out Temperature ________°F Boiler Amps Boiler Amps 1 3 2 4

87 Maintenance Log This log must be kept with the unit. It is the responsibility of the owner and/or maintenance/service contractor to

88 Literature Change History June 2010 Revision of the IOM adding PVC and CPVC piping Caution. November 2010 Revision of the IOM changing the recom

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9 PVC (Polyvinyl Chloride) and CPVC (Chlorinated Pol

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AAON 2425 South Yukon Ave. Tulsa, OK 74107-2728 Phone: 918-583-2266 Fax: 918-583-6094 www.aaon.com LL Series Installation, Operation & Ma