Aaon LN-140 Bedienungsanleitung

LN Series Chillers and Outdoor Mechanical Rooms Installation, Operation, & Maintenance FIRE OR EXPLOSION HAZARD F

10 LN Series Feature String Nomenclature Model Options : Unit Feature Options GEN MJREV SIZE SERIES MNREV VLT A1 A2 A3 A4 A5 B1 B2 B3 B4 1 2

11 LN Series Feature String Nomenclature Model Options : Unit Feature Options GEN MJREV SIZE SERIES MNREV VLT A1 A2 A3 A4 A5 B1 B2 B3 B4 1 2 3A

12 LN Series Feature String Nomenclature GEN MJREV SIZE SERIES MNREV VLT A1 A2 A3 A4 A5 B1 B2 B3 B4 1 2 3A 3B 3C 3D 4A 4B 4C 4D 5A 5B 5C 5D 6

13 LN Series Feature String Nomenclature Model Options : Unit Feature Options GEN MJREV SIZE SERIES MNREV VLT A1 A2 A3 A4 A5 B1 B2 B3 B4 1 2 3A

14 LN Series Feature String Nomenclature Model Options : Unit Feature Options GEN MJREV SIZE SERIES MNREV VLT A1 A2 A3 A4 A5 B1 B2 B3 B4 1 2 3A

15 General Information AAON LN Series chillers are complete self-contained liquid chilling units. They are assembled, wired, charged and r

16 Chiller Failure to observe the following instructions will result in premature failure of your system, and possible voi

17 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

18 Dual Pumps When redundant pumping is required, factory installed dual pumps can be ordered. A dual pump is a pump with two independent

19 Installation Chiller Placement The AAON LN Series is designed for outdoor applications and mounting at ground level or on a rooft

20 Figure 2 - Steel Mounting Rail with Dimensions Table 2 - Mounting Dimensions Tons A B C D 45-140 142” 138” 134” 139” Lifting and Handling If ca

21 Figure 4 - Lifting Detail of a 45-75 ton Unit Figure 5 - Lifting Detail of a 95-140 ton Unit Lifting slot locations are unit specific. Unit

22 Water Connection Connect the supply and return water lines. The connection size is listed on the unit rating sheet, along with the

23 Low Ambient Operation If the chiller is ordered for a Low Ambient application, the liquid system must use a glycol solution and the pip

24 may be a function of the variable frequency drive and must not be bypassed. Note: All units are factory wired for 208/230V, 460V, or 575V.

25 Startup (See back of the manual for startup form) Before the startup of the chiller be sure that the following items have bee

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

27 5. Determine whether the pin is in the HUB or RET Figure 11 - Fan HUB and RET Castings 6. Determine the current blade pitch and the pin loc

28 Multi-Wing W Series Black Glass Reinforced Polypropylene Fan Blade Pitch Angle Setting Instructions Contact the AAON parts department to ac

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

3 Table of Contents Safety ...

30 Convert the pressure obtained to a saturated temperature using the appropriate refrigerant temperature-pressure chart. Subtract the measured l

31 Correct an undercharged system by adding refrigerant to the system to reduce superheat and raise sub-cooling. If the sub-cooling is correct

32 Table 7 - R-410A Refrigerant Temperature-Pressure Chart F psig F psig F psig F psig F psig 20 78.3 50 142.2 80 234.9 110 364.1 140 540.1 21 80.0

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

34 A monthly clean water rinse is recommended for coils that are applied in coastal or industrial environments to help to remove chlorides

35 the entire area to be cleaned is wetted. After the substrate has been thoroughly wetted, the salts will be soluble and is now only n

36 Appendix - Water Piping Component Information Automatic Air Vent Valves Automatic Air Vent Valves provide automatic air venting for hot or c

37 of at least 1⁄2" diameter between the “Float Vent” valves and installation. Installation When the air vent valve is installed as

38 Dimensions – Weights: Pumps - Installation and Operating Instructions Introduction This document contains specific information regarding th

39 rotating element free and bearings fully functional. For long term storage, the pump must be placed in a vertical position in

4 Pump Piping - General ... 39 Pump Operat

40 Alignment Alignment is unnecessary on close-coupled pumps as there is no shaft coupling. Split-coupled units are accurately aligned at the factor

41 Check rotation arrow prior to operating the unit. The rotation of all Vertical In-Line units is “clockwise” when viewed from the driv

42 Mechanical seals may ‘weep’ slightly at start-up. Allow the pump to continue operating for several hours and the mechanical seal

43 Vibration Levels Vertical In-Line pumps are designed to meet vibration levels set by Hydraulic Institute Standard HI Pump Vibration 9.6.4. Standa

44 Discharge Valve This valve performs the dual function of automatically sealing the discharge of the inactive pump when one pump is

45 Locking 1. Loosen suction side set screw (11) to release the locking handle (3). 2. Rotate the suction side locking handle (3) so th

46

47

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

49 systems and could easily clog with debris if left in place. This will be detrimental to the operation of the pump. Inspect the cover O-ring

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

50 The gasket cavity should face out to the adjoining flange. 2. Lubricate the inner and outer diameter of the gasket with the lubricant pro

51 Step 2. With valve in fully open position, locate the differential pressure on the Performance curve, and for the given valve size in use,

52 Note: To prevent premature valve failure it is not recommended that the valve operate in the throttled position with more than 25 ft

53 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

54 LN Series Startup Form Job Name:_______________________________________________ Date:______________ Address:_________________________________

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

56 Condenser Fans Alignment Check Rotation Nameplate Amps________ Number hp L1 L2 L3 1 2 3 4 5 6 7 8 Pumping P

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

Literature Change History February 2014 Initial version.

59

6 Safety ELECTRIC SHOCK, FIRE OR EXPLOSION HAZARD Failu

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

7 FIRE, EXPLOSION OR CARBON MONOXIDE POISONING HAZ

8 PVC (Polyvinyl Chloride) and CPVC (Chlorinated Poly

9 1. Startup and service must be performed by a Factory Trained Service Technician 2. The unit is for outdoo