Aaon CL-230 Manuel d'utilisateur

CL SERIES ROOFTOP CONDENSING UNITS INSTALLATION, SERVICE & OWNER’S INFORMATION MANUAL

10 Diagram of Evaporative-cooled condenser Section including field water connections and base cutout tap

11STARTUP Pre-Startup: After the installation and immediately before the startup of the condenser be sure that these items have been checked. 1. Ve

12STARTUP cont. Step 2. Find Blade Pitch Angle: ( 20, 25, 27.5, 30, 32.5, 35, 37.5, 40, 45 or 50 ) • Carefully disassemble fan on flat surface and n

13STARTUP cont. Step 3. Determine blade rotation – on the concave side of the blade is a blade marking showing 6WR, 6WL, 7WL, 7WR, or 9WR. The “L”

14SERVICING AND MAINTENANCE cont. Charging Refrigerant: • Charging a system in the field must be based on determination of liquid sub-cooling and ev

15SERVICING AND MAINTENANCE cont. Adjusting Sub-cooling and Superheat Temperatures: The system is overcharged if: 1. the sub-cooling temperature is

16AAON, Inc. www.aaon.com Customer Service Department 2425 South Yukon Ave • Tulsa, OK 74107 Phone: 918-583-2266 • Fax: 918-382-6364 ALWAYS USE AAON

17EVAPORATIVE-COOLED CONDENSER cont. Performance: Improper location of the evaporative-cooled condenser may seriously degrade the capacity of the

18EVAPORATIVE-COOLED CONDENSER cont. 4. Turn rotating element by hand to assure that it rotates freely. Running: Periodically inspect pump while r

19EVAPORATIVE-COOLED CONDENSER cont. Water Treatment System: • All AAON evaporative-cooled condensers come equipped with a water treatment system th

2TABLE OF CONTENTS SECTION Page GENERAL DESCRIPTION………………………………………………………………………………………………… Unpacking…………………………………………………………………………………………………………..04 04 OW

20EVAPORATIVE-COOLED CONDENSER cont. MAINTENANCE RECOMMENDATIONS Pump Maintenance: • Cleaning - Remove oil, dust, water, and chemicals from exterio

21EVAPORATIVE-COOLED CONDENSER cont. WATER QUALITY Recirculating Water Quality Guidelines: • Cycles of concentration (the ratio of dissolved soli

22REFRIGERANT PIPING cont. • Excessive suction line pressure drop causes loss of compressor capacity and increased power usage resulting in reduced

23REFRIGERANT PIPING cont. • If the velocity of refrigerant in the liquid line is too great, it could cause excessive noise or piping erosion. The r

24REFRIGERANT PIPING cont. Hot Gas Bypass Line: • Hot Gas Bypass is available for use with DX systems that may experience low suction pressure durin

25REFRIGERANT PIPING cont. (ASHRAE Handbook 2006 - Refrigeration p. 2.19). Hot gas bypass pipe diameters are selected to maintain velocity below a

26REFRIGERANT PIPING cont. TABLE RP-1 Predetermined Line sizes for Dual Circuit CL units with R-410A Tons System R-410A Connection Size Predetermin

27REFRIGERANT PIPING cont. TABLE RP-2 Predetermined Line sizes for Dual Circuit CL units with R-22 Tons System R-22 Connection Size Predetermined L

28REFRIGERANT PIPING cont. TABLE RP-3 Predetermined Line sizes for Single Circuit CL units with R-410A Tons System R-410A Connection Size Predeterm

29REFRIGERANT PIPING cont. FIGURE RP-1. Riser height versus total equivalent line length for R-410A split system applications with dual circuited CL

3 It is the intent of AAON, Inc. to provide accurate and current specification information. However, in the interest of product

30REFRIGERANT PIPING cont. FIGURE RP-3. Riser height versus total equivalent line length for R-410A split system applications with single circuited

31 FIGURE RP-2. Hot Gas Bypass Piping Diagram with air handler above condenser. Note: Components shown within air handler and condensing unit are fac

32 FIGURE RP-3. Hot Gas Bypass Piping Diagram with air handler below condenser. Note: Components shown within air handler and condensing unit are fa

33 FIGURE RP-4. Hot Gas Reheat Piping Diagram with air handler above condenser. Note: Components shown within air handler and condensing unit are f

34 FIGURE RP-5. Hot Gas Reheat Piping Diagram with air handler below condenser. Note: Components shown within air handler and condensing unit are fa

35 FIGURE RP-6. Hot Gas Reheat Piping Diagram with air handler above condenser and field installed suction line accumulator. Note: Components shown w

36 FIGURE RP-7. Hot Gas Reheat Piping Diagram with air handler above condenser and field installed suction line accumulator. Note: Components shown w

37 FIGURE RP-8. Reheat/Hot Gas Bypass Piping Diagram with air handler above condenser. Note: Components shown within air handler and condensing unit

38 FIGURE RP-9. Reheat/Hot Gas Bypass Piping Diagram with air handler below condenser. Note: Components shown within air handler and condensing unit

39 FIGURE RP-10. Reheat/Hot Gas Bypass Piping Diagram with air handler evaporator above condenser and field installed suction line accumulator. Note:

4GENERAL DESCRIPTION All AAON 'CL Series' condensers are factory assembled, wired, and charged with 15 lbs. of refrigerant per system. Mod

40 FIGURE RP-11. Reheat/Hot Gas Bypass Piping Diagram with air handler below condenser and field installed suction line accumulator.Note: Components

41 FIGURE RP-5. Hot Gas Bypass Piping Diagram with air handler above condenser. Note: Components shown within air handler and condensing unit are fac

42 FIGURE RP-6. Hot Gas Bypass Piping Diagram with air handler below condenser. Note: Components shown within air handler and condensing unit are fa

43 FIGURE RP-7. Hot Gas Reheat Piping Diagram with air handler above condenser. Note: Components shown within air handler and condensing unit are f

44 FIGURE RP-8. Hot Gas Reheat Piping Diagram with air handler below condenser. Note: Components shown within air handler and condensing unit are fa

45 FIGURE RP-9. Hot Gas Reheat Piping Diagram with air handler above condenser and field installed suction line accumulator. Note: Components shown w

46 FIGURE RP-10. Hot Gas Reheat Piping Diagram with air handler above condenser and field installed suction line accumulator. Note: Components shown

47 FIGURE RP-11. Reheat/Hot Gas Bypass Piping Diagram with air handler above condenser. Note: Components shown within air handler and condensing unit

48 FIGURE RP-12. Reheat/Hot Gas Bypass Piping Diagram with air handler below condenser. Note: Components shown within air handler and condensing unit

49 FIGURE RP-13. Reheat/Hot Gas Bypass Piping Diagram with air handler evaporator above condenser and field installed suction line accumulator. Note:

5OWNER'S INFORMATION cont. General Maintenance: When the initial startup is made and on a periodic schedule during operation, it is necessary t

50 FIGURE RP-14. Reheat/Hot Gas Bypass Piping Diagram with air handler below condenser and field installed suction line accumulator.Note: Components

Condenser and Condenser Unit Startup Form Date:______________ Job Name:_____________________________________________________________________ Address

Refrigeration System 1 Pressure Saturated Temperature Line Temperature Sub-cooling Superheat Discharge N/A N/A Suction N/A Liquid N/A Ref

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

CL SERIES CONDENSING UNIT • INSTALLATION, SERVICE & OWNERS INFORMATION MANUAL AAON, Inc. 2425 South Yukon Tulsa, Oklahoma 74107

6INSTALLATION cont. low, there will be insufficient pressure to operate the expansion valve properly. During low ambient temperatures, it is diffic

7INSTALLATION cont. OROA Valve: This system uses a nonadjustable head pressure control valve that performs the function of limiting the flow of liq

8INSTALLATION cont. Piping Schematic of Example system using the ORI/ORD valve. The pressure setting of the ORI valve determines how well the syst

9INSTALLATION cont. During higher ambient temperatures the entire condenser is required to condense refrigerant. During these higher ambient temper