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  4. F1-024
  5. Installation, operation & maintenance manual

AAON F1-024 Installation, operation & maintenance manual

Manual is about: Indoor Air Handing Units F1 Series

Summary of F1-024

  • Page 1

    F1 series indoor air handing units installation, operation & maintenance 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. For your safety do not store or use gasoline or other flammable vapors and liqu...

  • Page 2

    Table of contents safety .............................................................................................................................................. 5 f1 series feature string nomenclature .......................................................................................... 9...

  • Page 3

    3 lubrication ................................................................................................................................ 29 blower assembly ...................................................................................................................... 29 coils .............

  • Page 4

    Index of table and figures tables: table 1 - electric heat minimum circuit ampacity .................................................................... 17 table 2 - electric heat maximum overcurrent protection ........................................................... 17 table 3 - factory preset a...

  • Page 5: Safety

    5 safety attention should be paid to the following statements: note - notes are intended to clarify the unit installation, operation and maintenance. Caution - caution statements are given to prevent actions that may result in equipment damage, property damage, or personal injury. Warning - warning ...

  • Page 6: Warning

    6 grounding required all field installed wiring must be completed by qualified personnel. Field installed wiring must comply with nec/cec, local and state electrical code requirements. Failure to follow code requirements could result in serious injury or death. Provide proper unit ground in accordan...

  • Page 7: Warning

    7 do not clean dx refrigerant coils with hot water or steam. The use of hot water or steam on refrigerant coils will cause high pressure inside the coil tubing and damage to the coil. Some chemical coil cleaning compounds are caustic or toxic. Use these substances only in accordance with the manufac...

  • Page 8: Caution

    8 1. Startup and service must be performed by a factory trained service technician. 2. The unit is for indoor use only. See general information section for more unit information. 3. Every unit has a unique equipment nameplate with electrical, operational, and unit clearance specifications. Always re...

  • Page 9

    9 f1 series feature string nomenclature f1 - b - 060 - 1 - m - c : c 0 0 0 c 000 0 0 series and generation rev. Unit size voltage app. Heat mtrs filters cntls blank refri. Blank cabinet special base model series and generation f1 revision b = design sequence unit size 024 = 24 mbh (2 ton) 036 = 36 m...

  • Page 10: General Information

    10 general information f1 series air handling units are designed for safe operation when installed, operated and maintained within design specifications and the instructions set forth in this manual. It is necessary to follow these instructions to avoid personal injury or damage to equipment or prop...

  • Page 11: Warning

    11 this unit. Failure to follow these regulations may harm the environment and can lead to the imposition of substantial fines. Because regulations may vary due to passage of new laws, aaon suggests a certified technician perform any work done on this unit. Should you have any questions please conta...

  • Page 12

    12 4. Do not move or discard damaged freight packaging materials 5. After losses have been acknowledged by the freight carrier, contact factory for a repair or replacement part quote. 6. With permission of freight carrier, order parts and/or make repairs. 7. Stay in contact with freight carrier to e...

  • Page 13: Caution

    13 direct expansion (dx) systems all dx systems include evaporator coils and thermal expansion valves (txv). Never turn off the main power supply to the unit, except for servicing, emergency, or complete shutdown of the unit. When power is cut off from the unit crankcase heaters cannot prevent refri...

  • Page 14: Installation

    14 installation aaon equipment has been designed for quick and easy installation. Startup and service must be performed by factory trained service technician. General f1 series air handling units are designed as heating, cooling or combination units for indoor installation only. They are designed fo...

  • Page 15

    15 units are designed for up flow and horizontal applications only. Suspended the f1 series multi-position air handling unit can be easily suspended for suspended horizontal installations. The air handling unit should be lifted into position, supporting the entire unit from the bottom throughout the...

  • Page 16: Warning

    16 lifting and handling the unit before lifting unit, be sure that all shipping material has been removed from unit. Care should be taken if using spreader bars, blocking or other lifting devices to prevent damage to the cabinet, coil or fans. Sealing it is very important to keep outside air from in...

  • Page 17

    17 8. Pull and install power wires per wiring diagram and mca, mop information herein and secure all wires firmly 9. Replace the front control panel(s) of the unit field installed wires should be single strand wires. Use of romex wires is not acceptable. Heating is accomplished by passing electrical...

  • Page 18

    18 ecm driven fan the electrically commutated motor (ecm) has selectable fan speeds as determined by the configuration of four pins as shown in figure 2. Figure 2 - example configuration of ecm fan taps adjust the taps as desired for cooling, dehumidification, and heating according to the following ...

  • Page 19

    19 heating: the fan speed for the heating cycle is selected by adjusting the heat tap (see figure 2) according to table 6. Table 6 - heating fan speed tap settings f1-060/ f1-036/ heat tap f1-048 f1-024 (cfm) (cfm) 1800 1000 a 1400 800 b 1200 600 c 1800 1000 d ecm fan notes 1. Fan only = 50% of max ...

  • Page 20

    20 service of the air handling unit with the placement of the check valve. 2. After installing the check valve, mount the receiver (shipped loose). The receiver tank must be mounted horizontally for proper operation. The receiver may be mounted on the air handling unit or at a convenient location ne...

  • Page 21: Caution

    21 all cooling coils must have drain pans equipped with “p” traps to avoid pulling air from outside the unit back through the drain line. All drain connection ports are sealed. Knock out only the connection port to be used. The trap should be located in warm ambient spaces. An additional drain pan m...

  • Page 22: Caution

    22 thermostat units without the neutral air dehumidification feature will operate with most common thermostats. Units with the neutral air dehumidification feature must use thermostats with a normally closed (nc) dehumidification option. The following stats have been approved for usage with the dehu...

  • Page 23: Caution

    23 checking liquid sub-cooling 1. Measure the temperature of the liquid line as it leaves the condenser coil. 2. Read the gauge pressure reading of the liquid line close to the point where the temperature was taken. You must use liquid line pressure, as it will vary from discharge pressure due to co...

  • Page 24: Caution

    24 correct an undercharged system by adding refrigerant to the system to reduce superheat and raise sub-cooling. If the sub-cooling is correct and the superheat is too high, the txv may need adjustment to correct the superheat. Elevation limitations see cb series installation, operation, and mainten...

  • Page 25

    25 table 8 - 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 80.0 48 137.2 75 217.1 102 325.6 129 469.3 22 81.8 49 139.7 76 220.6 103 330.2 130 475.4 23 83.6 50 142.2 77 224.1 104 334.9 131 481.6 24 85.4 51 144.8 ...

  • Page 26: Startup

    26 startup general only qualified, authorized personnel should power on, or startup this equipment. Before starting up the equipment, building construction should be complete, and start- up personnel should: have a working knowledge of general hvac and mechanical commissioning procedures and practic...

  • Page 27: Warning

    27 electric heat section procedures 1. Perform final visual inspection. Check all equipment ductwork and piping to verify that all work is complete. Improperly installed equipment or ductwork can affect readings. 2. Ensure that there is no construction debris in the unit. 3. Check the unit for exter...

  • Page 28

    28 optional equipment procedures if modulating hot gas reheat is equipped, additional installation steps are required. 1. Field installed piping is required. 2. The field supplied thermostat and humidistat must be wired to the reheat control as shown in the unit wiring diagram. 3. Verify that the co...

  • Page 29: Caution

    29 quarterly: check operation of heating and cooling sections. Check inlet and outlet air temperatures. Determine cause for abnormal changes. Annually: clean the condenser and evaporator coils with steam or a non-corrosive cleaner. Clean the drain line, “p” trap and condensate pan. Check refrigerant...

  • Page 30: Caution

    30 permanent type filters may be vacuumed and/or washed but should not be reinstalled until thoroughly dry. Most air filters are marked to indicate the direction of airflow, and this should be carefully noted when they are being installed. The blower and motor bearings are permanently lubricated and...

  • Page 31

    31.

  • Page 32

    32 refrigerant piping diagrams figure 4 - modulating hot gas reheat piping diagram with air handling unit above condensing unit..

  • Page 33

    33 figure 5 - modulating hot gas reheat piping diagram with air handling unit below condensing unit.

  • Page 34

    34 figure 6 - modulating hot gas reheat piping diagram with air handling unit above condensing unit with optional accumulator.

  • Page 35

    35 figure 7 - modulating hot gas reheat piping diagram with air handling unit below condensing unit with optional accumulator.

  • Page 36

    36 figure 8 - heat pump piping diagram with indoor unit above outdoor unit.

  • Page 37

    37 figure 9 - heat pump piping diagram with outdoor unit above indoor unit.

  • Page 38

    38 figure 10 - heat pump piping diagram with modulating hot gas reheat and indoor unit above outdoor unit.

  • Page 39

    39 figure 11 - heat pump piping with modulating hot gas reheat and outdoor unit above indoor unit.

  • Page 40

    40 thermostat installation and wiring figure 12 - 2 stage cooling with electric heat.

  • Page 41

    41 figure 13 - 2 stage cooling with heat pump and electric heat.

  • Page 42

    42 figure 14 - 2 stage cooling and electric heat with hot gas reheat and humidistat.

  • Page 43

    43 figure 15 - main control board for units equipped with modulating hot gas reheat.

  • Page 44

    44 figure 16 - field wiring connections for an f1 series air handling unit. Electric heating connections are made at lvtb3..

  • Page 45

    45 f igure 17 - 5kw ele ct ric he at.

  • Page 46

    46 f igure 18 - 10 kw ele ct ric he at.

  • Page 47

    47 f igure 19 - 15 kw ele ct ric he at.

  • Page 48

    48 f igure 20 - 20 kw ele ct ric he at.

  • Page 49

    49 f igure 21 - 25 kw ele ct ric he at.

  • Page 50: F1 Series Startup Form

    50 f1 series startup form job name:_______________________________________________ date:______________ address:______________________________________________________________________ ______________________________________________________________________________ model number:__________________________...

  • Page 51

    51 supply fan assembly alignment check rotation nameplate amps________ number hp l1 l2 l3 1 compressors/dx cooling check rotation number l1 l2 l3 head pressure psig suction pressure psig crankcase heater amps 1 - full capacity 2 - reduced capacity refrigeration system 1 full capacity - cooling mode ...

  • Page 52

    52 unit configuration water-cooled condenser air-cooled condenser no water leaks condenser safety check water flow ________ gpm water inlet temperature ________°f water outlet temperature ________°f water/glycol system 1. Has the entire system been flushed and pressure checked? Yes no 2. Has the ent...

  • Page 53

    53 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 service, repair or adjustments. Aaon service and warranty departments are available to advise and provide phone help for proper operation and replacemen...

  • Page 54

    54 literature change history november 2009 update of the iom formatting to match with other ioms and adding some variable capacity scroll compressor information. April 2009 update of the iom adding the f1 series model number description. June 2010 revision of the iom adding pvc and cpvc piping cauti...

  • Page 55

    55.

  • Page 56

    Aaon 203 gum spring rd. Longview, tx 75602-1721 phone: 903-236-4403 fax: 903-236-4463 www.Aaon.Com f1 series installation, operation & maintenance r58420 · rev. B · 171016 (acp 29902) it is the intent of aaon to provide accurate and current product information. However, in the interest of product im...