Installation and Operation Manual H2 / V2 Air Handlers Horizontal / Vertical 800 – 10,000 CFM FOR YOUR SAFETY DO NOT STORE OR USE GASOLINE OR OTHER FLAMMABLE VAPORS AND LIQUIDS IN THE VICINITY OF THIS OR ANY OTHER APPLIANCE. WARNING If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. Owner should pay particular attention to the words: NOTE, CAUTION, and WARNING.
Feature Overview 1 2 10 Fully Insulated 1” Double-Wall Construction 9 Painted Galvanized Steel Construction 8 3 Plenum Fan Access Cast Half-Turn Handles Duct or Accessory Flange 7 4 Duct or Accessory Flange Control Panel Access & More Coil Access Filter Access 6 5 Drain Connection on Either Side Coil Access 1 Double-wall construction for reduced cabinet loss, better air quality, and easier cleaning.
Contents 1. Description……………….....………... 4 Important Safety Information Unit Data Unit Orientation (Left or Right Hand) Model Number Nomenclature 4 5 7 8 4. Start-Up…...……………….....………... General Check Out Procedures Commissioning 15 15 15 15 16 Base Model Number 5. Feature Number 2. Delivery…...……………….....………... Receipt & Inspection Storage 3. Installation……..………….....………...
1. Description WARNING Important Safety Information RISK OF DAMAGE, INJURY, AND LOSS OF LIFE – Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. A qualified installer or service agency must perform installation and service. ONLY QUALIFIED PERSONNEL SHOULD PERFORM INSTALLATION, OPERATION, AND MAINTENANCE OF EQUIPMENT DESCRIBED IN THIS MANUAL.
Unit Data Table 5.1 H2 General Data Cabinet Size A B Coil Face Area Designation 1 1 1 2 3 4 1 2 CFM Range 800 - 1200 800 - 2000 1800 - 3000 1800 - 4000 2000 - 4800 2500 - 6000 3000 - 6000 4300 - 10000 Electric Heating KW 7, 14 7, 14, 21 1 / 10” / FC 1 / 15” / BI 1 / 18.5” / BI 1 / 18.5” / BI 1 / 27” / BI 1 1 2 3 2** 2 3 5 Double Oversize 3 5 7.5 Triple Oversize 5 7.5 10 24”x24”x2” (3) 16”x20”x2” (10) Blower Quantity / Wheel Dia.
Table 6.1 Water Coil Connection Sizes GPM 1.5 – 2.5 2.6 – 7 7.1 – 14 14.1 – 24 24.1 – 40 40.1 – 80 80.1 – 150 150.1 – 250 Sweat Conn. Size (In.) 5/8 7/8 1 1/8 1 3/8 1 5/8 2 1/8 2 5/8 3 1/8 MPT Conn. Size (In.) 1/2 1/2 1 1 1/4 1 1/2 2 2 1/2 3 Table 6.2 DX Coil Stub Out Connection Sizes Cabinet Size Coil Face Area Designation A B C 1 1 1 7/8” – 1/2 ” 7/8” – 1/2 ” 1 1/8” – 5/8” Coil Selection Single Circuit Double Circuit www.aaon.
Unit Orientation Determine left hand or right hand piping connections: Figure 7a, Unit Orientation Horizontal Air Handler Return Air Connections & service access on right side for right hand orientation Left Hand Side AIRFLOW Top View Supply Air Right Hand Side Remember: Consider the air to be “hitting the back of your head” as you face the return air inlet.
Model Number Nomenclature The base model number identifies main unit features. The feature number identifies optional features ordered with the equipment. Together, they comprise the complete model number. Figure 8a, Model Number Structure Feature Number Base Model Number H2 – C1 – 2 – 10 – 3B1 : A000D0A000 Complete Model Number www.aaon.
Base Model Number MAIN FEATURES CABINET SIZE TYPE 2 VOLTAGE - - HEATING - VOLTAGE TYPE H= V= COOLING - 1= 2= 3= 4= 5= 6= 7= 8= Horizontal Vertical 208-230V/1Ø/60HZ 208-230V/3Ø/60HZ 460V/3Ø/60HZ 575V/3Ø/60HZ 115V/1Ø/60HZ 380-415V/3Ø/50HZ 265V/1Ø/60HZ 115V/1Ø/60HZ CABINET SIZE Coil Face Area COOLING A 1 = Standard Only B 1 = Standard Only C 1 = Standard 2 = Oversize C+ 3 = Double Oversize 4 = Triple Oversize D 1 = Standard 2 = Oversize 00 = 10 = 16 = 50 = 56 = 20 = 30 = 40 = 99 = No C
Feature Number FEATURE OPTIONS MOTOR 1 FILTERS 2 ORIEN. CTRLS. 3 4 REFRIG. 5 ELECT. PULLEY OPEN 7 6 CABINET SPECIAL 9 8 10 MOTOR 0= A= B= C= E= F= G= H= SPECIAL Standard Oversize Double Oversize Triple Oversize Standard High Efficiency Oversize High Efficiency Double Oversize High Efficiency Triple Oversize High Efficiency 0= X= Standard (Lt.
2. Delivery NOTE NOTICE OF PILFERING – Check packing list against delivered goods. Ensure that equipment and loose-shipped items have not been pilfered or misplaced during staging or transit. The factory is not responsible for missing items after shipment. ALL SHIPMENTS ARE FOB THE FACTORY. IT IS THE RESPONSIBILITY OF THE RECEIVING PARTY TO INSPECT THE EQUIPMENT UPON ARRIVAL. Receipt & Inspection Units should be inspected for damage that may have occurred in transit.
3. Installation Handling General Be aware of what is contained in the equipment! Dependent upon the optional accessories that were ordered, this equipment may contain fragile components and delicate electronics. Although the unit is constructed of sturdy materials, avoid impacts and handling methods that may damage internal apparatus and structure, or the exterior painted surfaces of the unit.
Mounting & Suspension Sealing It is very important to keep outside air from infiltrating the unit cabinet. Seal all piping penetrations with Armaflex, Permagum, or other suitable sealant. Also seal around drain connections, electrical connections, and all other inlets where air may enter the cabinet. This is especially important when the unit is installed in an unconditioned area.
primary drain. An air break should be used with long runs of condensate lines. Heating Equipment When heat is called for, the cooling section is inoperable except for the indoor blower motor. Actual heating is accomplished by the air handling unit with hot water, steam or electric heating capabilities. Water supply lines must be insulated, properly fastened, drained and supported according to local code requirements.
without proper ductwork and access panels installed, except as required during start-up and air balancing. 4. Start-Up General 1. Check all electrical connections to be sure they are tight. 2. Open all access panels, and remove all shipping screws, or restraints. 3. Clean out any debris that may have been left. 4. Check belt alignment, and tightness of fan drives. 5. Check bearing locking collars, and fan wheel set screws for tightness. 6. Turn fan wheels to assure free rotation. 7.
13. If correct, take blower amp readings, and compare to see if the amp draw is within the safety factor area of the motor. 14. Check, and record ambient temperature. 15. Check for Guaranteed Off Timers (GOT), and/or Time Delay Relays (TDR). 16. Start the first stage cooling circuit, and blower circuit. 17. After all stages of cooling have been on for at least five minutes, record the return air temperature, and supply air temperature. 2. Ensure there is no construction debris in the unit. 3.
Controls A variety of controls and electrical accessories may be provided with the equipment. Identify the controls on each unit by consulting appropriate submittal, or order documents, and operate according to the control manufacturer’s instructions. If you cannot locate installation, operation, or maintenance information for the specific controls, then contact your sales representative, or the control manufacturer for assistance. WARNING Do not alter factory wiring.
5. Operation & Maintenance − − General − Immediately following building occupancy, the air conditioning system requires a maintenance schedule to assure continued successful operation. A maintenance program similar to the example given below should be scheduled for routine maintenance of this equipment in order to provide continued efficient, and reliable operation for the owner.
Figure 19c, Belt Deflection Belts Belt drive misalignment is one of the most common causes of premature belt failure. A belt can be destroyed in a matter of days if the drives have been aligned incorrectly. Sheave Centers The most common tool for measuring misalignment is a straightedge. Hold the straightedge flush across one pulley to gauge the degree of misalignment of the two sheaves.
Table 20.1, Fan Bearing Lubrication Schedule Cleaning Inspect and clean unit interior at the beginning of each heating and cooling season and as operating conditions require.
6. Troubleshooting Common Problems Table 21.
7. Factory Start-Up Form The factory start-up form is provided for the customer’s convenience only. It is not required to be returned to the factory. However, it is advisable to complete a start-up form to file with permanent unit records. Additionally, the form opposite this page may be completed and sent to the factory to be kept in the customer’s order file. You may complete and return the form to: AAON Coil Products, Inc.
You may complete this form at start-up and fax to 903-247-9219, or mail to: 23
www.aaon.
www.aaon.
Pressure – Temperature Chart, R-410A & R-22 PSIG PSIG PSIG PSIG PSIG (°F) R-410A R-22 (°F) R-410A R-22 (°F) R-410A R-22 (°F) R-410A R-22 (°F) R-410A R-22 20 78.3 43.1 50 142.2 84.1 80 234.9 143.6 110 364.1 226.4 140 540.1 337.4 21 80.0 44.2 51 144.8 85.7 81 238.6 146.0 111 369.1 229.6 141 547.0 341.6 22 81.8 45.3 52 147.4 87.4 82 242.3 148.4 112 374.2 232.8 142 553.9 345.9 23 83.6 46.5 53 150.1 89.1 83 246.0 150.8 113 379.4 236.
Typical Filter Sizes Table 28.1, Pleated Filter Sizes Horizontal (H2) Units Cabinet Size (CFM Range) C C+ A B (800 – 1,200) (1,200 – 2,000) 1 2 16” x 20” x 2” Pleated Qty. (2,000 – 4,000) D (6,000 – 10,000) 10 24” x 24” x 2” 2 Pleated Qty. Vertical (H2) Units (3,000 – 6,000) 3 A B C C+ D (800 – 1,200) (1,200 – 2,000) (2,000 – 4,000) (3,000 – 6,000) (6,000 – 10,000) 4 6 9 16” x 20” x 2” Pleated Qty. 1 24” x 24” x 2” Pleated Qty. 1 Optional 4” AAON 2425 S. Yukon Ave.
