Aaon RQ-006 Manuale Utente

RQ SERIES Packaged Rooftop Units, Heat Pumps, & Outdoor Air Handling Units Installation, Operation, & Maintenance

10 FIRE, EXPLOSION OR CARBON MONOXIDE POISONING HAZA

11 UNIT HANDLING To prevent injury or death lifti

12 1. Startup and service must be performed by a Factory Trai

13 4. Provide adequate combustion ventilation air to the furnace. If a vent duct extension is used, a class III approved vent is require

14 RQ Series Feature String Nomenclature Model Options : Unit F

15 RQ Series Feature String Nomenclature Model Options : Unit F

16 RQ Series Feature String Nomenclature Model Options : Unit Featu

17 RQ Series Feature String Nomenclature Model Options : Unit Feature

18 RQ Series Feature String Nomenclature Model Options : Unit Feature

19 RQ Series Feature String Nomenclature Model Options : Unit Feature

20 RQ Series Feature String Nomenclature Model Options : Unit Feature

21 RQ Series Feature String Nomenclature Model Options : Unit Feature

22 RQ Series Feature String Nomenclature Model Options : Unit Feature

23 General Information RQ Series packaged rooftop units, heat pumps and outdoor air handling units have been designed for outdoor installation o

24 Installation of RQ Series units must conform to the ICC standards of the International Mechanical Code, the International Building Code, an

25 The warranty card must be completed in full and returned to AAON not more than 3 months after unit is delivered. Storage If installation

26 to the compressor. As the liquid concentration builds up, oil is washed out of the compressor, leaving it starved for lubrication. The

27 Table 2 - Auxiliary Electric Heating Capacities Feature 3 kW (208V) kW (230V, 460V, 575V) *K = Heat K 7.5 10.0 *L = Heat L 15.0 20.0 *M = Heat M 22

28 Installation AAON equipment has been designed for quick and easy installation. Unit Location The curb should be mounted first and must be l

29 only. Do not make openings larger than necessary. Set the curb to coincide with the openings. Make sure the curb is level. Unit must be lev

3 Table of Contents Safety ...

30 Figure 3 - RQ Cabinet Standard and Power Exhaust Gasket Locations

31 Forklifting the Unit Units can be lifted using a forklift. Forks must be 48” in length. Standard units can be lifted from all sides

32 Lifting the Unit The RQ Series units must be lifted using the lifting points in the side base rails. A spreader bar must be used to

33 Figure 7 - Lifting Details of a 2-6 ton Energy Recovery Wheel Unit

34 Vertical Duct Connection Note: If outside air will be in contact with the air tunnel base the unit should include the base insulation option

35 Seismic Curb Installation Using a standard curb with a seismic unit will void the certification of the unit. All mounting details lis

36 Figure 10 - Seismic Solid Bottom Curb without Filters Cross Section Figure 11 - Seismic Solid Bottom Curb without Filters Detail A Figure 12

37 Figure 13 - Seismic Rigid Mount Curb Cross SectionHorizontal Duct Connection Note: If outside air will be in contact with the air tunnel base

38 Figure 15 - RQ Series unit Closed Rain Hood Figure 16 - RQ Series unit Open Rain HoodMetal Mesh Filters Metal mesh outside air filt

39 Electrical Verify the unit nameplate agrees with power supply. Connect power and control wiring to the unit as shown in Figure 12 and in t

4 Discharge and Suction Line Piping ... 49 Heating Coils ...

40 the current National Electric Code, ANSI/NFPA 70 or the current Canadian Electrical Code CSA C22.1. Note: All units are factory wired f

41 Wire control signals to the unit’s low voltage terminal block located in the controls compartment. If any factory installed wiring

42 After verifying gas inlet pressure and manifold pressure the service technician must time the gas flow rate through the gas meter with

43 From the natural gas maximum capacities table, at 100 ft and 1080 ft3/hr the required minimum pipe size is 2”. A 100 ft pipe run is needed fo

44 Additional Gas Piping Considerations Local codes will usually require a field provided and installed manual main shutoff valve and union ex

45 Leak Testing All components of gas supply system, including manual shut off valves and the piping in the interior of the unit, should be

46 Common forms of chlorides include: 1. Sea water mist entering an open cooling tower system. 2. Contaminated make-up water containing salt water

47 Glycol solution should be used if ambient temperatures are expected to fall below freezing or if the loop entering

48 Condenser water pump must be field sized and installed between the cooling tower/geothermal loop and self-contained unit. System should be

49 Piping systems should not exceed 10 ft/sec fluid velocity to ensure tube wall integrity and reduce noise. Condensate Drain Piping 2-6 ton

5 Appendix B - Thermistor Temperature vs. Resistance Values ... 75 RQ Series Startup Form ...

50 Figure 22 - Post Corner Hole Location Figure 23 - Post Back Hole Location

51 Figure 24 - Post Corner Hole Piping Figure 25 - Post Back Hole Piping

52 Heating Coils One or two row hot water and steam heating and preheating coils can be factory installed. All valve controls for heating operation a

53 Startup (See back of the manual for startup form.) During startup, it is necessary to perform routine checks on the pe

54 The type of unit and options determine the ranges for liquid sub-cooling and evaporator superheat. Refer to Table 13 below when determining

55 The system is undercharged if the superheat is too high and the sub-cooling is too low Correct an undercharged system by adding refrigerant to t

56 Table 15 - R-410A Refrigerant Temperature-Pressure Chart °F PSIG °F PSIG °F PSIG °F PSIG °F PSIG 20 78.3 47 134.7 74 213.7 101 321.0 128 463.2 21

57 Gas Heater Instructions Figure 26 - Gas Heater Instructions

58 Supply Fan EC Motor Startup Figure 27 - PIN Connectors on EC Supply Fan Motor Electronics Speed adjustment is made by varying the DC vol

59 If there is no rotation and/or no speed change, try the following: 1. Check the line-to-line voltage on the fuse block connected t

6 Index of Tables and Figures Tables: Table 1 - Electric and Gas Heating Capacities ...

60 Operation Unit operations should be controlled with thermostat, or unit controller, never at the main power supply, except for se

61 or by an auxiliary limit mounted in the supply fan compartment. Electric Heating Operation When a call for heating (G and W1, W2, e

62 Maintenance (See back of the manual for maintenance log) At least once each year, a trained, qualified service technician should check out

63 consultation with an AAON service representative. If induced draft blower/motor assembly has to be replaced, care must be taken to provide an

64 Condenser Fan Removal Take off the fan grill by removing the screws that attach it to the top of the unit. Disconnect

65 Figure 30 - Evaporator Coil Access Remove screws attaching filter rack to the evaporation coil at the front and back of the coil. It may

66 temperature is less than 130°F and pressure is less than 900 psig to avoid damaging the fin edges. An elevated water temperature (not to ex

67 Rinse - It is highly recommended that a hose be used, but a pressure washer will damage the fins. The water to be used for the rinse is recommended

68 Figure 31 - 2-6 ton Supply Fan Remove wire connections from motor. For EC motors unplug the wire harness at the control module that c

69 measured voltage on the single or three phase lines. Adjust the knob labeled %± to either SINGLE PHASE on the left side of the dial or

7 Figures: Figure 1 - Lockable Handle ... 24 F

70 Variable Capacity Compressor Controller Units with variable capacity scroll compressors may include the following compressor controller

71 Figure 36 - Compressor Controller Flash Code Details Filter Replacement Monthly air filter inspection is required to maintain optimum unit

72 Table 19 - RQ Series 2-6 ton Unit Filters Feature 6B Quantity / Size Type 0 2 / 20” x 20” x 2” Fiberglass Throwaway, 25% Eff, MERV 4 A Pleated, 3

73 Appendix A - Heat Exchanger Corrosion Resistance The resistance guide provides the corrosion resistance of stainless steel type AISI 316 and pure

74 Water Containing Concentration (mg/l or ppm) Time Limits - Analyze Before AISI 316 SMO 254 Copper Alloy Nickel Alloy Total Hardness (°dH) 4.0-8.5

75 Appendix B - Thermistor Temperature vs. Resistance ValuesDeg C Deg F Resistance (kOhms) -40 -40 2889.6 -35 -31 2087.22 -30 -22 1522.20 -25 -13 1121

76 RQ Series Startup Form Job Name:_______________________________________________ Date:______________ Address:_________________________________

77 Supply Fan Assembly Alignment Check Rotation Nameplate Amps________ Number hp L1 L2 L3 1 Band Size_____________________ VAV Contro

78 Compressors/DX Cooling Check Rotation Number L1 L2 L3 Head Pressure PSIG Suction Pressure PSIG 1 - Full Capacity 1 - Reduced Capacity

79 Water/Glycol System 1. Has the entire system been flushed and pressure checked? Yes No 2. Has the entire system been filled with fluid

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

81 Literature Change History February 2011 Added information regarding the charging of a heat pump and added additional information regarding freezi

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

9 Safety ELECTRIC SHOCK, FIRE OR EXPLOSION HAZARD Failur