AAON V3-E User Manual

H3/V3 Series

Horizontal and Vertical Indoor Air Handling Units

Installation, Operation

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 liquids in the vicinity of this or any other appliance.

WARNING

QUALIFIED INSTALLER

Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Startup and service must be performed by a Factory Trained Service Technician. A copy of this IOM should be kept with the unit.

WARNING

& Maintenance

Table of Contents

Safety .............................................................................................................................................. 6

H3/V3 Base Model Description .................................................................................................... 10

General Information ...................................................................................................................... 16

Codes and Ordinances ............................................................................................................... 16

Receiving Unit ........................................................................................................................... 17

Storage ....................................................................................................................................... 17

Direct Expansion (DX) Systems ............................................................................................... 17

Wiring Diagrams ....................................................................................................................... 18

Condensate Drain Pans .............................................................................................................. 18

Installation..................................................................................................................................... 18

Locating the Unit ....................................................................................................................... 19

Lifting and Handling the Unit ................................................................................................... 22

Electrical .................................................................................................................................... 22

Duct Connection ........................................................................................................................ 25

Condensate Drain Piping ........................................................................................................... 25

Heating Coils ............................................................................................................................. 26

Chilled Water Coil .................................................................................................................... 26

Electric Preheat ......................................................................................................................... 26

Refrigerant Piping ..................................................................................................................... 26

Determining Refrigerant Line Size ........................................................................................... 28

Startup ........................................................................................................................................... 32

Supply Fans ............................................................................................................................... 32

Fan Air Flow Adjustment .......................................................................................................... 32

Filters ......................................................................................................................................... 34

Adjusting Refrigerant Charge ................................................................................................... 34

Operation....................................................................................................................................... 37

Electric Heating Operation ........................................................................................................ 37

Steam or Hot Water Preheating Operation ................................................................................ 37

Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 37

Modulating Electric Preheat ...................................................................................................... 37

Maintenance .................................................................................................................................. 37

DX Cooling ............................................................................................................................... 37

Condensate Drain Pans .............................................................................................................. 37

E-Coated Coil Cleaning ............................................................................................................ 38

Supply Fans ............................................................................................................................... 39

Filter Replacement .................................................................................................................... 39

Replacement Parts ..................................................................................................................... 40

AAON-Longview Customer Service Department .................................................................... 40

Filter Information .......................................................................................................................... 41

Refrigerant Piping Diagrams ........................................................................................................ 52

H3/V3 Series Startup Form ........................................................................................................... 64

Maintenance Log .......................................................................................................................... 69

Literature Change History............................................................................................................. 70

Index of Tables and Figures

Tables:

Table 1 - H3 and V3 Series Clearances ........................................................................................ 19

Table 2 - Control Wiring............................................................................................................... 24

Table 3 - Drain Trap Dimensions ................................................................................................. 26

Table 4 - Acceptable Air-Cooled Refrigeration Circuit Values ................................................... 35

Table 5 - Acceptable Water-Cooled Refrigeration Circuit Values ............................................... 35

Table 6 - R-410A Refrigerant Temperature-Pressure Chart ......................................................... 36

Table 7 - H3 Series A Cabinet Pre Filters..................................................................................... 41

Table 8 - V3 Series A Cabinet Pre Filters..................................................................................... 41

Table 9 - H3 Series B Cabinet Pre Filters ..................................................................................... 42

Table 10 - V3 Series B Cabinet Pre Filters ................................................................................... 42

Table 11 - H3 Series C Cabinet Pre Filters ................................................................................... 43

Table 12 - V3 Series C Cabinet Pre Filters ................................................................................... 43

Table 13 - H3 Series D Cabinet Pre Filters................................................................................... 44

Table 14 - V3 Series D Cabinet Pre Filters................................................................................... 44

Table 15 - H3 Series E Cabinet Pre Filters ................................................................................... 45

Table 16 - V3 Series E Cabinet Pre Filters ................................................................................... 45

Table 17 - H3 Series A Cabinet Unit Filters ................................................................................. 46

Table 18 - V3 Series A Cabinet Unit Filters ................................................................................. 46

Table 19 - H3 Series B Cabinet Unit Filters ................................................................................. 47

Table 20 - V3 Series B Cabinet Unit Filters ................................................................................. 47

Table 21 - V3 Series C Cabinet Unit Filters ................................................................................ 48

Table 22 - V3 Series D Cabinet Unit Filters ................................................................................. 48

Table 23 - H3 Series A Cabinet Final Filters ................................................................................ 49

Table 24 - V3 Series A Cabinet Final Filters ................................................................................ 49

Table 25 - H3 Series B Cabinet Final Filters ................................................................................ 49

Table 26 - V3 Series B Cabinet Final Filters ................................................................................ 49

Table 27 - H3 Series C Cabinet Final Filters ................................................................................ 50

Table 28 - V3 Series C Cabinet Final Filters ................................................................................ 50

Table 29 - H3 Series D Cabinet Final Filters ................................................................................ 50

Table 30 - V3 Series D Cabinet Final Filters ................................................................................ 50

Table 31 - H3 Series E Cabinet Final Filters ................................................................................ 51

Table 32 - V3 Series E Cabinet Final Filters ................................................................................ 51

Figures:

Figure 1 - Lockable Handle .......................................................................................................... 17

Figure 2 – Minimum Clearance Required for Access to Unit (V3 Series plan view) .................. 19

Figure 3 – Minimum Clearance Required for Access to Unit (H3 Series plan view) .................. 19

Figure 4 – H3 Series Platform Suspension Installation ................................................................ 20

Figure 5 – H3 Series Parallel Beam Suspension Installation ........................................................ 20

Figure 6 - H3 Series Unit Orientation ........................................................................................... 21

Figure 7 - V3 Series Unit Orientation ........................................................................................... 21

Figure 8 - Drain Trap .................................................................................................................... 25

Figure 9 - TXV Bulb Position ....................................................................................................... 27

Figure 10 - Supply Fan Banding ................................................................................................... 33

Figure 11 – A/C only piping, AHU above CU ............................................................................. 52

Figure 12 – A/C only piping, AHU below CU ............................................................................. 53

Figure 13 – Modulating hot gas reheat piping, AHU above CU .................................................. 54

Figure 14 – Modulating hot gas reheat piping, AHU below CU .................................................. 55

Figure 15 – Hot gas bypass piping, AHU above CU .................................................................... 56

Figure 16 – Hot gas bypass piping, AHU below CU .................................................................... 57

Figure 17 – Modulating hot gas reheat with hot gas bypass piping, AHU above CU .................. 58

Figure 18 – Modulating hot gas reheat with hot gas bypass piping, AHU below CU.................. 59

Figure 19 – Heat pump piping, AHU above CU .......................................................................... 60

Figure 20 – Heat pump piping, AHU below CU .......................................................................... 61

Figure 21 – Heat pump with modulating hot gas reheat piping, AHU above CU ........................ 62

Figure 22 – Heat pump with modulating hot gas reheat piping, AHU below CU ........................ 63

R94201 · Rev. A · 140521

(ACP J00188)

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 statements are given to prevent actions that could result in

equipment damage, property damage, personal injury or death.

DANGER - Danger statements are given to prevent actions that will result in equipment

damage, property damage, severe personal injury or death.

ELECTRIC SHOCK, FIRE OR EXPLOSION HAZARD

Failure to follow safety warnings exactly could result in dangerous operation, serious injury, death or property damage.

Improper servicing could result in dangerous operation, serious injury, death or property damage.

 Before servicing, disconnect all

electrical power to the unit. More than one disconnect may be provided.

 When servicing controls, label all

wires prior to disconnecting. Reconnect wires correctly.

 Verify proper operation after

servicing. Secure all doors with key-lock or nut and bolt.

WARNING

Electric shock hazard. Before servicing, disconnect all electrical power to the unit, including remote disconnects, to avoid shock hazard or injury from rotating parts. Follow proper Lockout-Tagout procedures.

WARNING

FIRE, EXPLOSION OR CARBON MONOXIDE POISONING HAZARD

Failure to replace proper controls could result in fire, explosion or carbon monoxide poisoning. Failure to follow safety warnings exactly could result in serious injury, death or property damage. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this appliance.

WARNING

Safety

VARIABLE FREQUENCY DRIVES

Do not leave VFDs unattended in hand mode or manual bypass. Damage to personnel or equipment can occur if left unattended. When in hand mode or manual bypass mode VFDs will not respond to controls or alarms.

WARNING

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 accordance with these code requirements.

WARNING

During installation, testing, servicing and troubleshooting of the equipment it may be necessary to work with live electrical components. Only a qualified licensed electrician or individual properly trained in handling live electrical components shall perform these tasks.

Standard NFPA-70E, an OSHA regulation requiring an Arc Flash Boundary to be field established and marked for identification of where appropriate Personal Protective Equipment (PPE) be worn, should be followed.

WARNING

UNIT HANDLING

To prevent injury or death lifting equipment capacity shall exceed unit weight by an adequate safety factor. Always test-lift unit not more than 24 inches high to verify proper center of gravity lift point to avoid unit damage, injury or death.

WARNING

ROTATING COMPONENTS

Unit contains fans with moving parts that can cause serious injury. Do not open door containing fans until the power to the unit has been disconnected and fan wheel has stopped rotating.

WARNING

Electric motor over-current protection and overload protection may be a function of the Variable Frequency Drive to which the motors are wired. Never defeat the VFD motor overload feature. The overload ampere setting must not exceed 115% of the electric motors FLA rating as shown on the motor nameplate.

CAUTION

Failure to properly drain and vent coils when not in use during freezing temperature may result in coil and equipment damage.

CAUTION

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.

WATER PRESSURE

Prior to connection of condensing water supply, verify water pressure is less than maximum pressure shown on unit nameplate. To prevent injury or death due to instantaneous release of high pressure water, relief valves should be field supplied on system water piping.

To prevent damage to the unit, do not use acidic chemical coil cleaners. Do not use alkaline chemical coil cleaners with a pH value greater than

8.5, after mixing, without first using an aluminum corrosion inhibitor in the cleaning solution.

CAUTION

WARNING

CAUTION

Do not use oxygen, acetylene or air in place of refrigerant and dry nitrogen for leak testing. A violent explosion may result causing injury or death.

WARNING

Always use a pressure regulator, valves and gauges to control incoming pressures when pressure testing a system. Excessive pressure may cause line ruptures, equipment damage or an explosion which may result in injury or death.

WARNING

Do not work in a closed area where refrigerant or nitrogen gases may be leaking. A sufficient quantity of vapors may be present and cause injury or death.

WARNING

Rotation must be checked on all MOTORS AND COMPRESSORS of 3 phase units at startup by a qualified service technician. Scroll compressors are directional and can be damaged if rotated in the wrong direction. Compressor rotation must be checked using suction and discharge gauges. Fan motor rotation should be checked for proper operation. Alterations should only be made at the unit power connection

CAUTION

Some chemical coil cleaning compounds are caustic or toxic. Use these substances only in accordance with the manufacturer’s usage instructions. Failure to follow instructions may result in equipment damage, injury or death.

WARNING

Door compartments containing hazardous voltage or rotating parts are equipped with door latches to allow locks. Door latch are shipped with nut and bolts requiring tooled access. If you do not replace the shipping hardware with a pad lock always re-install the nut & bolt after closing the door.

CAUTION

PVC (Polyvinyl Chloride) and CPVC (Chlorinated Polyvinyl Chloride) are vulnerable to attack by certain chemicals. Polyolester (POE) oils used with R-410A and other refrigerants, even in trace amounts, in a PVC or CPVC piping system will result in stress cracking of the piping and fittings and complete piping system failure.

CAUTION

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 refer to the unit nameplate for specific ratings unique to the model you have purchased.

4. READ THE ENTIRE INSTALLATION,

OPERATION AND MAINTENANCE MANUAL. OTHER IMPORTANT SAFETY PRECAUTIONS ARE PROVIDED THROUGHOUT THIS MANUAL.

5. Keep this manual and all literature

safeguarded near or on the unit.

H3/V3 Series Feature String Nomenclature

Model Options

Unit Feature Options

GEN SIZE

ORENT

MJREV VLT CORR A1

A4 B1

1D 2 3 4 5A

5C 6A

6C 7 8 9

14A

14B

- A R B - 3 - 0 - 1 6 1 C

1 2 F : A A B B - 0 C 0 - F T B - 0 G 0 - 0 0 A A A C 0 0

A 0 0 0 0 0 0 0 0

BASE MODEL

SERIES AND GENERATION

H3 = Horizontal - Back Intake, Front Discharge V3 = Vertical - Back Intake, Top Discharge

UNIT SIZE

A = Up to 1,200 cfm B = Up to 2,000 cfm C = Up to 4,000 cfm D = Up to 6,000 cfm E = Up to 10,000 cfm

UNIT ORIENTATION

R = Right Hand Connections L = Left Hand Connections

REVISION

A = First Revision B = Second Revision

VOLTAGE

1 = 230V/1Φ/60Hz 2 = 230V/3Φ/60Hz 3 = 460V/3Φ/60Hz 4 = 575V/3Φ/60Hz 8 = 208V/3Φ/60Hz 9 = 208V/1Φ/60Hz

CORROSION PROTECTION

0 = None A = Interior Corrosion Protection

H3/V3 Base Model Description

Model Option A: COOLING

A1: COOLING TYPE

0 = No Cooling 1 = R-410A DX Cooling 2 = Chilled Water Cooling

A2: COOILNG ROWS

0 = No Cooling 4 = 4 Row Coil 6 = 6 Row Coil 8 = 8 Row Coil

A3: COOLING STAGES

0 = No Cooling 1 = Single Circuit 2 = Two Circuits - Interlaced Coil D = Double Serpentine F = Single Serpentine H = Half Serpentine Q = Quarter Serpentine

A4: COOLING FPI

0 = No Cooling A = 10 fpi B = 8 fpi C = 12 fpi

H3/V3 Series Feature String Nomenclature

Model Options

Unit Feature Options

GEN SIZE

ORENT

MJREV VLT CORR A1

A4 B1

1D 2 3 4 5A

5C 6A

6C 7 8 9

14A

14B

H3 - A R B - 3 - 0 - 1 6 1 C -

1 2 F : A A B

- 0 C 0 - F T B - 0 G 0 - 0 0 A A A C 0 0

A 0 0 0 0 0 0 0 0

Model Option B: HEATING

B1: HEATING TYPE

0 = No Heating 1 = Hot Water 3 = Electric Heating 4 = Steam Distributing

B2: HEATING DESIGNATION

0 = No Heating 1 = 1 Row Coil 2 = 2 Row Coil A = 7 kW (5.3 kW @ 208V) B = 14 kW (10.5 kW @ 208V) C = 21 kW (15.8 kW @ 208V) D = 28 kW (21.0 kW @ 208V) E = 35 kW (26.3 kW @ 208V) F = 42 kW (31.5 kW @ 208V) G = 49 kW (37.0 kW @ 208V) H = 56 kW (42.0 kW @ 208V) J = 63 kW (47.3 kW @ 208V) K = 70 kW (52.5 kW @ 208V) L = 77 kW (57.8 kW @ 208V) M = 84 kW (63.0 kW @ 208V)

B3: HEATING STAGES

0 = No Heating 1 = 1 Stage 2 = 2 Stage 3 = 3 Stage 4 = 4 Stage S = Modulating/SCR Electric F = Single Serpentine 12 fpi H = Half Serpentine 12 fpi Q = Quarter Serpentine 12 fpi

Feature 1: SUPPLY FAN

1A: SUPPLY AIR BLOWER CONFIGURATION

0 = 1 Blower + Premium Eff. Motor 1 = 1 Blower + Premium Eff. Motor + 1 VFD A = 1 Blower + 1 High Efficiency EC Motor B = 2 Blowers + 2 High Efficiency EC Motors

1B: SUPPLY AIR BLOWER

1 = 15” Backward Curved Plenum Fan 2 = 15” BC Plenum, 50% Width with Banding 3 = 18.5” Backward Curved Plenum Fan 4 = 18.5” BC Plenum Fan, 70% Width with Banding 5 = 22” Backward Curved Plenum Fan 6 = 24” Backward Curved Plenum Fan 7 = 27” Backward Curved Plenum Fan 8 = 27” BC Plenum Fan, 70% Width with Banding

A = 310 mm Direct Drive BC Plenum Fan B = 355 mm Direct Drive BC Plenum Fan C = 450 mm Direct Drive BC Plenum Fan

1C: SUPPLY AIR BLOWER MOTOR

1 = 1 hp - 1760 rpm 2 = 2 hp - 1760 rpm 3 = 3 hp - 1760 rpm 4 = 5 hp - 1760 rpm 5 = 7.5 hp - 1760 rpm 6 = 10 hp - 1760 rpm B = 1.0 kW (1.34 hp) C = 1.7 kW (2.28 hp) D = 3.0 kW (4.02 hp) E = 5.4 kW (8.00 hp)

1D: SUPPLY BLOWER CONTROL/CONTROL VENDORS

0 = Standard - Terminal Block A = Potentiometer Supply Fan Control B = WattMaster Orion Controls System C = Field Installed Controls by Others

H3/V3 Series Feature String Nomenclature

Model Options

Unit Feature Options

GEN SIZE

ORENT

MJREV VLT CORR A1

A4 B1

1D 2 3 4 5A

5C 6A

6C 7 8 9

14A

14B

H3 - A R B - 3 - 0 - 1 6 1 C - 1 2

F : A A B B -

0 C 0 - F T B

- 0 G 0 - 0 0 A A A C 0 0

A 0 0 0 0 0 0 0 0

Feature 2: REFRIGERATION OPTIONS

0 = Standard - None A = Single Circuit External Hot Gas Bypass B = Dual Circuit External Hot Gas Bypass C = Heat Pump D = Option B + H E = Options B + J F = Options C + H G = Options C + J H = Modulating Hot Gas Reheat J = Factory Installed Modulating Hot Gas Reheat K = Dual Circuit Modulating Hot Gas Reheat + Option B L =Factory Installed Dual Circuit Modulating Hot Gas Reheat + Option B M = Dual Circuit Modulating Hot Gas Reheat + Option C N = Factory Installed Dual Circuit Modulating Hot Gas Reheat + Option C P = Option H (Circuit 1) + Option A (Circuit 2) Q = Option J (Circuit 1) + Option A (Circuit 2)

Feature 3: SPECIAL CONTROLS

0 = Standard - None A = Constant Volume Controller - CV Cool + CV Heat B = Constant Volume Controller with Modulating Hot Gas Reheat - CV Cool + CV Heat C = VAV Controller - VAV Cool + CV Heat D = VAV Controller with MHGR - VAV Cool + CV Heat E = Make Up Air Controller - CV Cool + CV Heat F = Make Up Air Controller with Modulating Hot Gas Reheat - CV Cool + CV Heat G = WattMaster Modulating Hot Gas Reheat Controller

Feature 4: ADDITIONAL CONTROLS

0 = Standard - None A = Phase and Brownout Protection B = Return and Supply Air Firestat C = Return Air Smoke Detector D = Options A + B E = Options A + C F = Options B + C G = Options A + B + C

Feature 5: MIXING BOX

5A: RETURN AIR DAMPER POSITION

0 = Standard - None F = Front L = Left Hand (Front OA Damper Required) R = Right Hand (Front OA Damper Required) T = Top (Front OA Damper Required)

5B: OUTSIDE AIR DAMPER POSITION

0 = Standard - None F = Front L = Left Hand (Front RA Damper Required) R = Right Hand (Front RA Damper Required) T = Top (Front RA Damper Required)

5C: MIXING BOX DAMPER CONTROL

0 = Standard - None A = 2 Position Actuators B = Fully Modulating Actuators C = Fixed Position Dampers

H3/V3 Series Feature String Nomenclature

Model Options

Unit Feature Options

GEN SIZE

ORENT

MJREV VLT CORR A1

A4 B1

1D 2 3 4 5A

5C 6A

6C 7 8 9

14A

14B

H3 - A R B - 3 - 0 - 1 6 1 C - 1 2

F : A A B B - 0 C 0 - F T B -

0 G 0 - 0 0 A A A

C 0 0

A 0 0 0 0 0 0 0 0

Feature 6: FILTER BOX

6A: PRE FILTER BOX

0 = Standard - None

A = 2” Pleated - 30% Eff. - MERV 8 B = 4” Pleated - 30% Eff. - MERV 8 C = 4” Pleated - 65% Eff. - MERV 11 D = 4” Pleated - 85% Eff. - MERV 13 E = 4” Pleated - 95% Eff. - MERV 14 F = 2” Pleated - 30% Eff. - MERV 8 + 4” Pleated -

30% Eff. - MERV 8 G = 2” Pleated - 30% Eff. - MERV 8 + 4” Pleated 65% Eff. - MERV 11 H = 2” Pleated - 30% Eff. - MERV 8 + 4” Pleated 85% Eff. - MERV 13 J = 2” Pleated - 30% Eff. - MERV 8 + 4” Pleated 95% Eff. - MERV 14

6B: UNIT FILTER

0 = Standard - None

6C: FINAL FILTER BOX

0 = Standard - None

A = 2” Pleated - 30% Eff. - MERV 8 B = 12” Cartridge - 65% Eff. - MERV 11 C = 12” Cartridge - 85% Eff. - MERV 13 D = 12” Cartridge - 95% Eff. - MERV 14 E = 2” Pleated - 30% Eff. - MERV 8 + 12” Cartridge

- 65% Eff. - MERV 11 F = 2” Pleated - 30% Eff. - MERV 8 + 12” Cartridge

- 85% Eff. - MERV 13 G = 2” Pleated - 30% Eff. - MERV 8 + 12” Cartridge

- 95% Eff. - MERV 14

Feature 7: FILTER OPTIONS

0 = Standard - None A = Magnehelic Gauge B = Clogged Filter Switch C = Options A + B

Feature 8: COIL COATING

0 = Standard - None A = E-coated Cooling and Heating Coils

Feature 9: EXPANSION VALVE

0 = None A = Thermal Expansion Valves

Feature 10: EXPANSION VALVE CONTROLS

0 = None A = Standard Control

Feature 11: EXTERNAL PAINT

0 = Standard - None A = AAON Gray Paint B = Special Paint

H3/V3 Series Feature String Nomenclature

Model Options

Unit Feature Options

GEN SIZE

ORENT

MJREV VLT CORR A1

A4 B1

1D 2 3 4 5A

5C 6A

6C 7 8 9

14A

14B

H3 - A R B - 3 - 0 - 1 6 1 C - 1 2

F : A A B B - 0 C 0 - F T B - 0 G 0 - 0 0 A A

C 0 0

A 0 0 0 0

0 0 0

Feature 12: TONNAGE

0 = Standard - None A = 2 ton Capacity B = 3 ton Capacity C = 4 ton Capacity D = 5 ton Capacity E = 6 ton Capacity F = 7 ton Capacity G = 8 ton Capacity H = 10 ton Capacity J = 14 ton Capacity K = 17 ton Capacity L = 22 ton Capacity M = 25 ton Capacity N = 30 ton Capacity P = 31 ton Capacity Q = 34 ton Capacity R = 40-45 ton Capacity S = 50-55 ton Capacity T = 63 ton Capacity

Feature 13: ADDED OR MODIFIED SYSTEMS

0 = Standard - None

Feature 14: GPM

14A: GPM COOLING COIL

0 = Standard - None A = 1.5-2.5 gpm B = 2.6-7.0 gpm C = 7.1 -14.0 gpm D = 14.1-24.0 gpm E = 24.1-40.0 gpm F = 40.1-80.0 gpm G = 80.1-150.0 gpm H = 150.1-250.0 gpm

14B: GPM HEATING COIL

0 = Standard - None A = 1.5-2.5 gpm B = 2.6-7.0 gpm C = 7.1 -14.0 gpm D = 14.1-24.0 gpm E = 24.1-40.0 gpm F = 40.1-80.0 gpm G = 80.1-150.0 gpm H = 150.1-250.0 gpm

Feature 15: CONTROL PANEL

0 = None A = Small Control Panel - 12” x 12” B = Medium Control Panel - 25” x 22” C = Large Control Panel - 48” x 22”

Feature 16: CABINET

0 = Standard – None A = Horizontal Split B = Vertical Split C = Horizontal and Vertical Split

Feature 17: BLANK

0 = Standard - None

Feature 18: BLANK

0 = Standard - None

Feature 19: BLANK

Digit 41:

0 = Standard - None

Feature 20: CRATING

0 = Standard – None A = Export Crating B = Forkliftable Base – 5” Base D = Option A + B E = Shipping Shrink Wrap F = Options B + E G = Options A + B + E

H3/V3 Series Feature String Nomenclature

Model Options

Unit Feature Options

GEN SIZE

ORENT

MJREV VLT CORR A1

A4 B1

1D 2 3 4 5A

5C 6A

6C 7 8 9

14A

14B

H3 - A R B - 3 - 0 - 1 6 1 C - 1 2

F : A A B B - 0 C 0 - F T B - 0 G 0 - 0 0 A A A C 0 0

A 0 0 0 0

0 0 0

Feature 21: PULLEY COMBINATION

0 = Standard – None A = 1000-1400 rpm B = 1401-1800 rpm C = 1801-2200 rpm

Feature 22: WARRANTY

0 = Standard - 1 Year Parts

Feature 23: TYPE

0 = Standard X = Special Pricing Authorization

WARNING

The Clean Air Act of 1990 bans the intentional venting of refrigerant as of July 1, 1992. Approved methods of recovery, recycling, or reclaiming must be followed.

CAUTION

Coils and sheet metal surfaces present sharp edges and care must be taken when working with equipment.

WARNING

These units must not be used as a

“construction heater” at anytime

during any phase of construction. Very low return air temperatures, harmful vapors, and misplacement of the filters will damage the unit and its efficiency.

CAUTION

General Information

AAON® H3 and V3 Series indoor air handling units have been designed for indoor installation only. Units are assembled, wired, charged with dry nitrogen and run-tested at the factory. H3 and V3 Series units are not intended for residential use. Startup and service must be performed by a Factory Trained Service Technician.

Certification of Steam or Hot Water Heat Models

a. Certified as a forced air heating system

with or without cooling.

b. Certified for indoor installation only.

Certification of Electric Heat Models

a. Certified as an electric warm air furnace

with or without cooling.

b. Certified for indoor installation only.

Certification of Cooling Models

a. Certified as a commercial central air

conditioner with or without electrically operated compressors.

b. Certified for indoor installation only. c. Certified with refrigerant R-410A coils

or with chilled water cooling coils.

Codes and Ordinances

H3 and V3 Series units have been tested and certified, by ETL, in accordance with UL Safety Standard 1995/CSA C22.2 No. 236.

System should be sized in accordance with the American Society of Heating, Refrigeration and Air Conditioning Engineers Handbook.

Installation of H3 and V3 Series units must conform to the ICC standards of the International Mechanical Code, the International Building Code, Installation of Air Conditioning and Ventilating Systems Standard, NFPA 90A, and local building, plumbing and waste water codes. All appliances must be electrically grounded in accordance with local codes, or in the absence of local codes, the current National Electric Code, ANSI/NFPA 70 or the current Canadian Electrical Code CSA C22.1.

Failure to observe the following instructions will result in premature failure of your system and possible voiding of the warranty.

WARNING

Receiving Unit

When received, the unit should be checked for damage that might have occurred in transit. If damage is found it should be noted

on the carrier’s Freight Bill. A request for inspection by carrier’s agent should be made

in writing at once.

Nameplate should be checked to ensure the correct model sizes and voltages have been received to match the job requirements.

If repairs must be made to damaged goods, then the factory should be notified before any repair action is taken in order to protect the warranty. Certain equipment alteration, repair, and manipulation of equipment without the manufacturer’s consent may void the product warranty. Contact the AAON Warranty Department for assistance with handling damaged goods, repairs, and freight claims: (903) 236-4403.

Note: Upon receipt check shipment for items that ship loose such as filters and remote sensors. Consult order and shipment documentation to identify potential looseshipped items. Loose-shipped items may have been placed inside unit cabinet for security. Installers and owners should secure all doors with locks or nuts and bolts to prevent unauthorized access.

Figure 1 - Lockable Handle

Storage

This equipment is not suitable for outdoor use of storage. If installation will not occur immediately following delivery, store equipment in a dry protected area away from construction traffic and in the proper orientation as marked on the packaging with all internal packaging in place. Secure all loose-shipped items.

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 refrigerant migration into the condensing unit compressors. This means the compressor may cool down and liquid refrigerant may accumulate in the compressor. The compressor is designed to pump refrigerant gas and damage may occur when power is restored.

Unit should not be operated without a p-trap. Failure to install a p-trap may result in overflow of condensate water.

CAUTION

CRANKCASE HEATER

OPERATION

Some units are equipped with compressor crankcase heaters, which should be energized at least 24 hours prior to cooling operation, to clear any liquid refrigerant from the compressors.

CAUTION

Emergency drain pan is recommended for all applications where a risk of water damage to surrounding structure or furnishings. Refer to local codes.

CAUTION

If power to the unit must be off for more than an hour, turn the thermostat system switch to "OFF", or turn the unit off at the control panel, and leave the unit off until the main power switch has been turned on again for at least 24 hours for units with compressor crankcase heaters. This will give the crankcase heater time to clear any liquid accumulation out of the compressor before it is started.

Always control the unit from the thermostat, or control panel, never at the main power supply, except for emergency or complete shutdown of the unit.

During the cooling season, if the air flow is reduced due to dirty air filters or any other reason, the cooling coils can get too cold which will cause excessive liquid to return to the compressor. As the liquid concentration builds up, oil is washed out of the compressor, leaving it starved for lubrication.

The compressor life will be seriously shortened by reduced lubrication and the pumping of excessive amounts of liquid oil and refrigerant.

Note: Low Ambient Operation Air-cooled DX units without a low ambient option, such as condenser fan cycling or the

0°F low ambient option, will not operate in the cooling mode of operation properly when the outdoor temperature is below 55°F. Low ambient and/or economizer options are recommended if cooling operation below 55°F is expected.

Wiring Diagrams

Unit specific wiring diagrams are laminated and affixed inside the controls compartment door.

Condensate Drain Pans

Units require field installed drain p-traps and lines to be connected to the condensate drain pans of the unit. The lines should be the same pipe size or larger than the drain connection, include a p-trap, and pitch downward toward drain. An air break should be used with long runs of condensate lines.

Installation

AAON equipment has been designed for quick and easy installation. Startup and service must be performed by Factory Trained Service Technician.

Unit Size

Access Side

Clearance

(dimension X on

Figure 2 and

Figure 3)

All Other

Sides

V3-A

36 inches*

6 inches**

V3-B

V3-C

V3-D

V3-E

H3-A

H3-B

H3-C

H3-D

45 inches*

H3-E

60 inches*

(See Table 1)

Front

Back

Left

Right

Back

Front

Left

Right

Locating the Unit

Placement of the unit relative to ductwork, electrical and plumbing must be carefully considered. Return air plenum or duct can be mounted directly to the return air flanges. Use flexible gasket material to seal the duct to the unit.

Verify floor, foundation or suspension support can support the total unit weight, including accessory weights. Unit must be level in both horizontal axes to support the unit and reduce noise and vibration from the unit.

Allow adequate space for piping access and panel removal. To ensure proper access

for field service, maintain minimum clearances for field piping and other obstructions as indicated by Table 1 and Figure 2 and Figure 3. Consult local

building codes for additional service clearance requirements. Condensate drain connections are located on the access side of the unit.

Table 1 - H3 and V3 Series Clearances

Floor Mounted Units

Make sure the unit is level and mounted on a field supplied platform with a minimum height to allow for proper depth of the condensate line p-trap. Other installation provisions may be necessary according to job specifications. V3 Series vertical air handling units are designed for upflow applications only

Figure 2 – Minimum Clearance Required for

Access to Unit (V3 Series plan view)

Figure 3 – Minimum Clearance Required for

Access to Unit (H3 Series plan view)

*Additional clearance may be required to allow for coil removal. **May be installed flush depending upon local codes.

Suspended Units

H3 Series horizontal air handling units are equipped for suspended installations. The unit should be lifted into position by supporting the unit with the skid used for shipping. The air handling unit must be installed level and care should be taken to prevent damage to the cabinet. Other

installation provisions may be necessary according to job specifications. Figure 4 and Figure 5 show factory recommended methods for suspended installations. It is the responsibility of the specifying engineer or installing contractor to ensure the installation is structurally safe and sound.

Figure 4 – H3 Series Platform Suspension Installation

Figure 5 – H3 Series Parallel Beam Suspension Installation

H3 Series

Return Air

“Back”

Supply Air

“Front”

Right Hand Side

Left Hand Side

Connections and service

Top View

Air Flow

Connections and service

access on right side for

right hand orientation

Right Hand Side

Left Hand Side

Return Air

“Back”

Top View

V3 Series

Air Flow

Consider the air flow to be

hitting the back of your head.

Consider the air flow to be

hitting the back of your head.

Supply Air

“Front”

access on right side for

right hand orientation

Figure 6 - H3 Series Unit Orientation

Note: Access doors may be on the “left” or “right” side as designated by the unit orientation on

the configurator string. “Back” will always be the same side as the pre-filter and return air opening. “Front” will always be the side opposite the pre-filter and return air opening.

Figure 7 - V3 Series Unit Orientation

UNIT HANDLING

Incorrect lifting can cause damage to the unit, injury or death. Lifting equipment capacity should exceed unit weight by an adequate safety factor. Always test lift unit not more than 24 inches high to verify proper center of gravity lift point.

WARNING

The foam insulation releases dangerous fumes when it is burnt. Do not cut a foam part with a cutting torch or plasma cutter. Do not weld to a foam filled part.

WARNING

Electric shock hazard. Before attempting to perform any installation, service, or maintenance, shut off all electrical power to the unit at the disconnect switches. Unit may have multiple power supplies. Failure to disconnect power could result in dangerous operation, serious injury, death, or property damage.

WARNING

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.

Electrical

Verify the unit name plate agrees with power supply. H3 and V3 Series units are provided with single point power wiring connections. Connection terminations are made to the main terminal block. A complete set of unit specific wiring diagrams, showing factory and field wiring are laminated in plastic and located inside the control compartment door.

Route power and control wiring, separately, through the utility entry in the unit. Do not run power and control signal wires in the same conduit.

All units require field supplied electrical overcurrent and short circuit protection. Device must not be sized larger than the Maximum Overcurrent Protection (MOP) shown on the unit nameplate.

Codes may require a disconnect switch be within sight of the unit.

It is recommended that the field installed overcurrent protection or disconnect switch not be installed on the unit.

Electrical supply can enter through the bottom or side of the controls compartment.

A single point connection to a terminal block is provided. High voltage conductors should enter the control panel in a separate opening and separate conduit than low voltage conductors.

To pass wires through the wall or roof of the unit, a hole should be cut and conduit passed through it. Use the following procedure to cut a round hole in a foam panel.

Cutting Electrical Openings

1. Locate the placement of the hole. Be sure that the conduit will not interfere with the operation of any component or prevent access of any door or removable panel. Field cut openings must be a minimum of 6

Installing Contractor is responsible for proper sealing of the electrical and gas entries into the unit. Failure to seal the entries may result in damage to the unit and property.

Three phase voltage imbalance will cause motor overheating and premature failure.

CAUTION

inches away from all components and wiring to prevent damage due to drilling or cutting.

2. Drill a pilot hole all the way through the foam panel.

3. Using a hole saw cut the hole through the metal on both sides of the foam part.

4. With a knife cut the foam out of the hole.

5. After the conduit is installed in the hole caulk the entire perimeter of the hole on both sides with an industrial grade silicone sealant or a duct seal compound.

If a larger cut-out is needed for additional duct connections not provided by the factory, or for any other reason, it is very important that the foam be completely sealed. Insulation covers should be fabricated from sheet metal to cover the foam at the cut. The edges and corners that are not covered should then be sealed using silicone caulking or a duct seal compound.

If a reciprocating saw is used to make the cut-out take care that the metal skins of the foam part do not separate from the foam, this would result in reduced structural integrity of the part.

Size supply conductors based on the unit Minimum Current Ampacity (MCA) rating. Supply conductors must be rated a minimum of 75°C.

Protect the branch circuit in accordance with code requirements. The unit must be electrically grounded in accordance with local codes, or in the absence of local codes, the current National Electric Code,

ANSI/NFPA 70 or the current Canadian Electrical Code CSA C22.1.

Note: Units are factory wired for 208V, 230V, 460V or 575V. In some units, the 208V and 230V options may also be provided in single or three phase configurations. The transformer configuration must be checked by a qualified technician prior to startup.

Wire power leads to the unit’s terminal

block or main disconnect. All wiring beyond this point has been completed by AAON and cannot be modified without effecting the

unit’s agency/safety certification.

Supply voltage must be within the min/max range shown on the unit nameplate. Available short circuit current should not exceed the short circuit current rating (SCCR) shown on the unit nameplate.

Three phase voltage imbalance will cause motor overheating and premature failure. The maximum allowable imbalance is 2.0%.

Voltage imbalance is defined as 100 times the maximum deviation from the average voltage divided by the average voltage.

Example: (221V+230V+227V)/3 = 226V, then 100*(226V-221V)/226V = 2.2%, which exceeds the allowable imbalance.

Check voltage imbalance at the unit disconnect switch and at the compressor

Wire Size (Stranded)

- Copper Conductors Only

Total Wire Distance Allowable 20 AWG

200 ft

18 AWG

350 ft

16 AWG

500 ft

14 AWG

750 ft

12 AWG

1250 ft

Rotation must be checked on all MOTORS AND COMPRESSORS of three phase units. Supply fan motors should all be checked by a qualified service technician at startup and any wiring alteration should only be made at the unit power connection.

CAUTION

Scroll compressors are directional and will be damaged by operation in the wrong direction. Low pressure switches on compressors have been disconnected after factory testing. Rotation should be checked by a qualified service technician at startup using suction and discharge pressure gauges and any wiring alteration should only be made at the unit power connection.

CAUTION

terminal. Contact your local power company for line voltage corrections.

Installing contractor must check for proper motor rotation and check blower motor amperage listed on the motor nameplate is not exceeded.

Wire control signals to the unit’s low

voltage terminal block located in the controls compartment.

If any factory installed wiring must be replaced, use a minimum 105°C type AWM insulated conductors.

Thermostat Control Wiring

If a thermostat is used for unit control, thermostat should be located on an inside wall 4-5 feet above the floor where it will

not be subjected to drafts, sun exposure, or heat from electrical fixtures of appliances. Control wiring must deliver adequate voltage to components to assure proper operation. Control voltage returning from controller circuit must be a minimum of 21 VAC. To assure proper wiring use the following chart to determine the allowable wiring distances.

Table 2 - Control Wiring

Total Wire Distance Allowable = (Quantity of Control Wires) x (Control Wire Distance)

Take the total wire distance allowable and divide by the number of wires to be connected. This indicates the distance allowable for that size wire. The wiring to the unit must not exceed the total wire distance allowable. If the voltage at the connectors is less than 21 VAC, isolation relays must be installed. If under external control 21 VAC must be field verified.

All external devices must be powered via a separate external power supply.

Example: A total of 8 wires must be pulled 75ft to a control the unit. What size wire should be used?

According to the Table 2, 16 AWG allows for 63ft (500 ft/8 wires) and 14 AWG allows for 94ft (750 ft/8 wires). Thus, 14 AWG should be used.

Unit should not be operated without p-traps. Failure to install a p-traps may result in overflow of condensate water.

CAUTION

Duct Connection

Attach duct to flanges provided on the unit. The installer is responsible for sealing ducts to the flanges to prevent water leaks.

Refer to Figure 6 and Figure 7 for duct connection locations. Ductwork should be sized in accordance with the ASHRAE Handbook. Ductwork should be installed in accordance with NFPA Standard 90A.

When attaching duct to the unit, use a flexible/compressible material rated for duct connections. A three inch flexible connector for both return and supply duct connections is recommended.

Condensate Drain Piping

Unit may be equipped with more than one condensate drain pan connection. A p-trap and drain line must be installed on at least one section’s drain connection, with the ptrap not to exceed 6” from the drain connection. The lines should be the same pipe size or larger than the drain connection, include a p-trap, and pitch downward toward drain. An air break should be used with long runs of condensate lines.

Draw-through cooling coils will have a negative static pressure in the drain pan area. This will cause an un-trapped drain to back up due to air being pulled up through the condensate drain piping.

Condensate drain trapping and piping should conform to all applicable governing codes.

Note: The drain pan connection(s) is a 1” MPT fitting.

Figure 8 - Drain Trap

The X dimension on the draw-through trap should be at least equal to the absolute value of the negative static pressure in the drain pan plus one inch. To calculate the static pressure at the drain pan add the pressure drops of all components upstream of the drain pan, including the cooling coil, and add the return duct static pressure. Include the dirt allowance pressure drop for the filters to account for the worst-case scenario. The height from top of the bottom bend of the trap to the bottom of the leaving pipe must be at least equal to one half of the X dimension. This ensures that enough water is stored in the trap to prevent losing the drain seal during unit startup

Note: The absolute value of the fan inlet pressure will always be greater than or equal to the absolute value of the static pressure in the drain pan on draw-through units, so the fan inlet pressure is a safe value to use for the drain pan static pressure.

Draw-Through

Drain Pan Pressure

Trap Dimensions

Negative Static

X/2

(inches of water)

(inch)

-0.50

1.50

0.75

-1.00

2.00

1.00

-1.50

2.50

1.25

-2.00

3.00

1.50

-2.50

3.50

1.75

-3.00

4.00

2.00

-3.50

4.50

2.25

-4.00

5.00

2.50

Table 3 - Drain Trap Dimensions

Heating Coils

One or two row hot water and steam heating and preheating coils can be factory installed. All valve controls for heating coil operation are field supplied and field installed.

Water coils should not be subjected to entering air temperatures below 38°F to prevent coil freeze-up. If air temperature across the coil is going to be below this value, use a glycol solution to match the coldest air expected.

Chilled Water Coil

Factory installed four, six or eight row chilled water cooling coils can be factory mounted. All valve controls for the cooling coil operation are field supplied and field installed.

Electric Preheat

The modulating electric preheat option is designed to temper the incoming outside air to the unit based on an enable control signal and the outside air conditions.

A 24VAC enable signal must be provided to the [PHE] terminal to enable the operation of the electric preheat. Once the preheat controller is enabled it will monitor the outside air temperature to determine if any capacity of preheat is needed. If the outside

air temperature falls below the outside air temperature setpoint the electric preheat will be started up and maintain the leaving air temperature setpoint with both SCR controlled and staged electric preheat. Both setpoints are set with push button LCD interface on the preheat controller. Outside air temperature sensors and preheat discharge supply air temperature sensors are factory installed and wired to the preheat controller. Electric preheat has maximum operating outside air temperature of 60°F and a maximum preheat discharge air temperature of 80°F.

[COM], [PHO] & [PHC] feedback terminals are provided to communicate if the electric preheat is in operation. PHO is a normally open contact, PHC is a normally closed contact, and COM is the common. These terminals are not required to be connected.

[PHE] is the electric preheat operation enable. [PH+] and [PH-] are the preheat set point reset terminals.

Refrigerant Piping

(See back of the manual for refrigerant piping diagrams and connection sizes.)

Piping from the condensing unit to the air handling unit is the responsibility of the installing contractor.

The Split System Configurator or Refrigerant Piping Calculator in AAONEcat32 should be used to determine acceptable refrigerant line sizes. The pipe sizes must be selected to meet the actual installation conditions and not simply based on the connection sizes at the evaporator or condensing unit.

Piping shall be in accordance with national and local codes. Pressure limiting devices, backflow preventers and all other safety requirements are the sole responsibility of the installing contractor.

WARNING

This section is for information only and is not intended to provide all details required by the designer or installer of the refrigerant piping between the condenser or condensing unit and the air handling unit. AAON is not responsible for interconnecting refrigerant piping. Consult ASHRAE Handbook – Refrigeration and ASME Standards.

CAUTION

Only clean ACR tubing should be used. Piping should conform to generally accepted practices and codes.

The air handling unit coils are pressurized. The copper caps must be punctured to permit a gradual escape of the pressure prior to un-sweating those caps. Immediately couple the tubing to the indoor unit to avoid

exposing the coils to moisture. A properly sized filter drier is furnished in the condenser. When making solder connections, make sure dry nitrogen flows through the lines, when heating the copper, to prevent oxidization inside of the copper.

When piping is completed interconnecting piping and air handling unit must be evacuated to 500 microns or less and leak checked. Condenser shutoff

valves can then be opened to allow refrigerant to flow to the air handling unit.

Thermal expansion valve bulbs should be mounted with good thermal contact on a horizontal section of the suction line close to the evaporator, but outside the cabinet, and well insulated.

Figure 9 - TXV Bulb Position

Refrigerant lines should be fastened and supported according to local codes. Unit should be charged based on determination of sub-cooling and superheat. See Adjusting Refrigerant Charge section for more information.

Refrigerant reheat coil for the modulating hot gas reheat option is factory installed. Liquid line receiver should be installed at the condensing unit. Care must be taken not to cross circuits in reheat systems.

Line sizes must be selected to meet actual installation conditions, not simply based on the connection sizes at the condensing unit or air handling unit.

CAUTION

Modulating Hot Gas Reheat Piping:

1. Run a hot gas reheat line from the condensing unit and connect it to the inlet of the stub-out on the reheat coil. The inlet connection is the top (or highest) stub-out of the reheat coil. Connect the hot gas line from the outdoor unit to the upper stub-out connection of the reheat coil.

2. Run a liquid line from the discharge of the reheat coil through a tee connection. Run a liquid line from the condenser, through a check valve to the other side of the tee. Run a liquid line from the tee to the liquid line stub-out of the evaporator coil.

3. Run a suction line from the evaporator coil outlet stub-out to the condensing unit.

Determining Refrigerant Line Size

The piping between the condenser and low side must ensure:

1. Minimum pressure drop, and

2. Continuous oil return, and

3. Prevention of liquid refrigerant slugging, or carryover

Minimizing the refrigerant line size is favorable from an economic perspective, reducing installation costs, and reducing the potential for leakage. However, as pipe diameters narrow, pressure-reducing frictional forces increase.

Excessive suction line pressure drop causes loss of compressor capacity and increased power usage resulting in reduced system

efficiency. Excessive pressure drops in the liquid line can cause the liquid refrigerant to flash, resulting in faulty TXV operation and improper system performance. In order to operate efficiently and cost effectively, while avoiding malfunction, refrigeration systems must be designed to minimize both cost and pressure loss.

Equivalent Line Length

All line lengths discussed in this manual, unless specifically stated otherwise, are Equivalent Line Lengths. The frictional pressure drop through valves, fittings, and accessories is determined by establishing the equivalent length of straight pipe of the same diameter. Always use equivalent line lengths when calculating pressure drop. Special piping provisions must be taken when lines are run underground, up vertical risers, or in excessively long line runs.

Liquid Line Sizing

When sizing the liquid line, it is important to minimize the refrigerant charge to reduce installation costs and improve system reliability. This can be achieved by minimizing the liquid line diameter. However, reducing the pipe diameter will increase the velocity of the liquid refrigerant which increases the frictional pressure drop in the liquid line, and causes other undesirable effects such as noise.

Maintaining the pressure in the liquid line is critical to ensuring sufficient saturation temperature, avoiding flashing upstream of the TXV, and maintaining system efficiency. Pressure losses through the liquid line due to frictional contact, installed accessories, and vertical risers are inevitable. Maintaining adequate subcooling at the condenser to overcome these losses is the only method to ensure that liquid refrigerant reaches the TXV.

Liquid refrigerant traveling upwards in a riser loses head pressure. If the evaporator is below the condenser, and the liquid line does not include risers, the gravitational force will increase the pressure of the liquid refrigerant. This will allow the refrigerant to withstand greater frictional losses without the occurrence of flashing prior to the TXV.

A moisture-indicating sight glass may be field installed in the liquid line to indicate the occurrence of premature flashing or moisture in the line. The sight glass should not be used to determine if the system is properly charged. Use temperature and

pressure measurements to determine liquid sub-cooling, not the sight glass.

Liquid Line Routing

Care should be taken with vertical risers. When the system is shut down, gravity will pull liquid down the vertical column, and back to the condenser when it is below the evaporator. This could potentially result in compressor flooding. A check valve can be installed in the liquid line where the liquid column rises above the condenser to prevent this. The liquid line is typically pitched along with the suction line, or hot gas line, to minimize the complexity of the configuration.

Liquid Line Insulation

When the liquid line is routed through regions where temperature losses are expected, no insulation is required, as this may provide additional sub-cooling to the refrigerant. When routing the liquid line through high temperature areas, insulation of the line is appropriate to avoid loss of subcooling through heat gain.

Liquid Line Guidelines

In order to ensure liquid at the TXV, frictional losses must not exceed available sub-cooling. A commonly used guideline to

consider is a system design with pressure losses due to friction through the line not to exceed a corresponding 1-2°F change in saturation temperature.

If the velocity of refrigerant in the liquid line is too great, it could cause excessive noise or piping erosion. The recommended maximum velocities for liquid lines are 100 fpm from the condenser to a receiver tank to discourage fluid backup, and 300 fpm from receiver tank to the evaporator to minimize valve induced liquid hammer.

Liquid Line Accessories

Liquid line shut off valves and filter driers are factory provided. Filter driers must be field installed on 2-5 ton units. The total length equivalent of pressure losses through valves, elbows and fittings must be considered when adding additional components in the field. It is a good practice to utilize the fewest elbows that will allow the mating units to be successfully joined.

Suction Line Sizing The suction line is more critical than the liquid line from a design and construction standpoint. More care must be taken to ensure that adequate velocity is achieved to return oil to the compressor at minimum loading conditions. However, reducing the piping diameter to increase the velocity at minimal load can result in excessive pressure losses, capacity reduction, and noise at full load. The suction line also dictates the position of the TXV sensing bulb for proper operation of the TXV.

Suction Line Routing

Pitch the suction line in the direction of flow (about 1 foot per 100 feet of length) to maintain oil flow towards the compressor, and keep it from flooding back into the evaporator. Crankcase heaters are provided to keep any condensed refrigerant that

Circuits with variable capacity scroll compressors require suction riser traps every 10 feet.

CAUTION

collects in the compressor from causing damage or wear. Make sure to provide support to maintain suction line positioning, and insulate completely between the evaporator and condensing unit.

It is important to consider part load operation when sizing suction lines. At minimum capacity, refrigerant velocity may not be adequate to return oil up the vertical riser. Decreasing the diameter of the vertical riser will increase the velocity, but also the frictional loss.

A double suction riser can be applied to the situation of part load operation with a suction riser. A double suction riser is designed to return oil at minimum load while not incurring excessive frictional losses at full load. A double suction riser consists of a small diameter riser in parallel with a larger diameter riser, and a trap at the base of the large riser. At minimum capacity, refrigerant velocity is not sufficient to carry oil up both risers, and it collects in the trap, effectively closing off the larger diameter riser, and diverting refrigerant up the small riser where velocity of the refrigerant is sufficient to maintain oil flow.

At full load, the mass flow clears the trap of oil, and refrigerant is carried through both risers. The smaller diameter pipe should be sized to return oil at minimum load, while the larger diameter pipe should be sized so that flow through both pipes provides acceptable pressure drop at full load.

Suction Line Insulation

The entire suction line should be insulated. This prevents condensation from forming on the line, and reduces any potential loss in capacity associated with heat gain.

Suction Line Guidelines

For proper performance, suction line velocities less than a 4,000 fpm maximum are recommended. The minimum velocity required to return oil is dependent on the pipe diameter, however, a general guideline of 1,000 fpm minimum may be applied.

In a fashion similar to the liquid line, a common guideline to consider is a system design with pressure losses due to friction through the line not to exceed a corresponding 1-2°F change in saturation temperature.

At points where small pipe size can be used to provide sufficient velocity to return oil in vertical risers at part loads, greater pressure losses are incurred at full loads. This can be compensated for by over sizing the horizontal runs and vertical drop sections. This will however require additional refrigerant charge.

Circuits with variable capacity scroll compressors require suction riser traps every 10 feet.

Suction Line Accessories

If the job requirements specify suction accumulators, they must be separately purchased and field installed.

Hot Gas Bypass Line

Hot Gas Bypass is available for use with DX systems that may experience low suction pressure during the operating cycle. This may be due to varying load conditions associated with VAV applications or units supplying a large percentage of outside air. The system is designed to divert refrigerant

from the compressor discharge to the low pressure side of the system in order to keep the evaporator from freezing and to maintain adequate refrigerant velocity for oil return at minimum load.

Hot discharge gas is redirected to the evaporator inlet via an auxiliary side connector (ASC) to false load the evaporator when reduced suction pressure is sensed.

Field piping between the condensing unit and the evaporator is required.

Hot Gas Bypass Piping Considerations for Evaporator above Condensing Unit

Pitch the hot gas bypass (HGB) line downward in the direction of refrigerant flow, toward the evaporator.

When installing hot gas bypass risers, a drain leg must be provided at the lowest point in the system. The drain leg must be vertical, its diameter should be the same as the diameter of the riser, and it should be 1 foot long. Install a sight glass in the drain leg for observation. Run an oil drip line, using 1/8 inch capillary tube, 10 feet in length, from the drain leg to the suction line. Connect the oil drip line below the sight glass and 1 inch above the bottom of the drain leg. HGB valves are adjustable. Factory HGB valve settings will be sufficient for most applications, but may require slight adjustments for some applications, including some make up air applications.

Insulate the entire length of the HGB line with a minimum 1 inch thick Armaflex insulation.

Hot Gas Bypass Piping Considerations for Evaporator below Condensing Unit

The line must slope downward from the HGB valve toward the evaporator.

Hot Gas Bypass Line Guidelines

Choose a small size line to ensure oil return, and minimize refrigerant charge.

Maintain velocities below a maximum of 4,000 fpm. A general minimum velocity guideline to use is approximately 1,000 fpm.

Hot Gas Reheat

The AAON modulating hot gas reheat system diverts hot discharge gas from the condenser to the air handling unit through the hot gas line. Field piping between the

condensing unit and the air handler is required.

The line delivers the hot discharge gas to the reheat coil and/or the hot gas bypass valve, so it is sized as a discharge line.

Discharge lines should be sized to ensure adequate velocity of refrigerant to ensure oil return, avoid excessive noise associated with velocities that are too high, and to minimize efficiency losses associated with friction.

Pitch the hot gas line in the direction of flow for oil return.

When installing hot gas reheat risers, a drip leg must be provided at the lowest point in the system. The drip leg must be vertical, its diameter should be the same as the diameter of the riser, and it should be 1 foot long. Run a drip line, using 1/8 inch capillary tube, 10 feet in length, from the drip leg to the suction line. Connect the drip line a minimum of 1-inch above the bottom of the drain leg.

Insulate the entire length of the hot gas line with a minimum 1 inch thick Armaflex insulation.

WARNING

Electric shock hazard. Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

WARNING

Hot Gas Reheat Guidelines

Maintain velocities below a maximum of 3,500 fpm. A general minimum velocity guideline is 2,000 fpm.

Startup

(See back of the manual for startup form)

During startup, it is necessary to perform routine checks on the performance of the unit. This includes checking of the air flow, the air filters and refrigerant charge.

Supply Fans

H3 and V3 Series units are equipped with direct drive backward curved plenum supply fan assemblies or belt driven backward curved plenum supply fans that deliver the air volume specified according to unit size and job requirements.

Fan Air Flow Adjustment

A specific air volume is delivered by the fans with air volume bands in the blower wheels, Electronically Commutated Motors (ECM), or Variable Frequency Drives

(VFD). Field air flow adjustment may be required at startup.

Air volume bands for the wheels are sized

according to the unit’s air delivery

specifications and can also be ordered from the factory for field installation.

Air Flow Adjustment

If reduced air volume is required an air volume band or larger air volume band can be installed within the blower wheel to reduce the amount of air delivered by the wheel.

If the unit is factory equipped with the air volume band and additional air volume is required, the band can be removed from the wheel.

Use fan program in AAONEcat32 to determine the new band size for the required cfm and static pressure.

The following photos of a wheel are provided for practical guidelines only in order to identify the air band location in the wheel. Actual field installation of the air band into the wheel will require access into and through the blower wheel venture, which may require removal of the blower motor and wheel.

Air volume bands are made of aluminum, sized and equipped with easy bend tabs that are to be inserted into pre-punched slots provided on the wheel. Once the band has been inserted into the slots, it MUST BE secured by bending the tabs over from the back side of the wheel and also MUST BE secured from the inside by connecting the ends together with a pop-rivet in the holes provided on the ends of the band.

If the band is field installed, a hand held pop-rivet tool is recommended for connecting the band ends together. Caution must be taken to assure that the band is tightly installed and no damage, denting or alteration to the wheel or blades occurs during the installation.

Figure 10 - Supply Fan Banding

Before completing startup and leaving the unit a complete operating cycle should be observed to verify that all components are functioning properly.

CAUTION

The Clean Air Act of 1990 bans the intentional venting of refrigerant

(CFC’s and HCFC’s) as of July 1,

1992. Approved methods of recovery, recycling or reclaiming must be followed. Fines and/or incarceration may be levied for non-compliance.

CAUTION

Filters

Do not operate the unit without filters in place. Unit should be checked for correct filter placement during startup. Operation of the equipment without filters will result in a clogged evaporator coil.

Adjusting Refrigerant Charge

Adjusting the charge of a system in the field must be based on determination of liquid sub-cooling and evaporator superheat. On a system with a TXV liquid sub-cooling is more representative of the charge than evaporator superheat but both measurements must be taken.

Before Charging

Unit being charged must be at or near full load conditions before adjusting the charge.

Units equipped with hot gas reheat must be charged with the hot gas reheat valves closed while the unit is in cooling mode to get the proper charge. After charging, unit should be operated in reheat

(dehumidification) mode to check for correct operation.

After adding or removing charge the system must be allowed to stabilize, typically 10-15 minutes, before making any other adjustments.

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

Checking Liquid Sub-Cooling

Measure the temperature of the liquid line as it leaves the condenser.

Read the gauge pressure at the liquid line close to the point where the temperature was taken. Use liquid line pressure as it will vary from discharge pressure due to condenser pressure drop.

Convert the pressure obtained to a saturated temperature using the appropriate refrigerant temperature-pressure chart.

Subtract the measured liquid line temperature from the saturated temperature to determine the liquid sub-cooling.

Compare calculated sub-cooling to the table below for the appropriate unit type and options.

Checking Evaporator Superheat

Measure the temperature of the suction line close to the compressor.

Read gauge pressure at the suction line close to the compressor.

Convert the pressure obtained to a saturated temperature using the appropriate refrigerant temperature-pressure chart.

Air-Cooled Condenser / Air-Source Heat

Pump

Sub-Cooling

12-18°F

Sub-Cooling with

Hot Gas Reheat

15-22°F

Superheat

8-15°F

Water-Cooled Condenser / Water Source

Heat Pump

Sub-Cooling

6-10°F

Sub-Cooling with

Hot Gas Reheat

8-12°F

Superheat

8-15°F

Thermal expansion valve must be adjust to approximately 8-15°F of suction superheat. Failure to have sufficient superheat will damage the compressor and void the warranty.

CAUTION

DO NOT OVERCHARGE!

Refrigerant overcharging leads to excess refrigerant in the condenser coils resulting in elevated compressor discharge pressure.

CAUTION

DO NOT OVERCHARGE!

Refrigerant overcharging leads to excess refrigerant in the condenser coils resulting in elevated compressor discharge pressure.

CAUTION

Subtract the saturated temperature from the measured suction line temperature to determine the evaporator superheat.

Compare calculated superheat to the table below for the appropriate unit type and options.

Table 4 - Acceptable Air-Cooled

Refrigeration Circuit Values

Table 5 - Acceptable Water-Cooled

Refrigeration Circuit Values

Adjusting Sub-Cooling and Superheat Temperatures

The system is overcharged if the sub-cooling temperature is too high and the evaporator is fully loaded (low loads on the evaporator result in increased sub-cooling) and the evaporator superheat is within the temperature range as shown in the table above (high superheat results in increased sub-cooling).

Correct an overcharged system by reducing the amount of refrigerant in the system to lower the sub-cooling.

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 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. Before adjusting the TXV, verify the sensing bulb is in the correct position according to Figure 9 and follows the guidelines below.

1. The suction line is clean where the sensing bulb is attached.

2. The entire length of the sensing bulb is in contact with the suction line.

3. The sensing bulb should be placed several inches downstream of the equalizer line.

°F

PSIG

°F

PSIG

°F

PSIG

°F

PSIG

°F

PSIG

78.3

134.7

213.7

101

321.0

128

463.2

80.0

137.2

217.1

102

325.6

129

469.3

81.8

139.7

220.6

103

330.2

130

475.4

83.6

142.2

224.1

104

334.9

131

481.6

85.4

144.8

227.7

105

339.6

132

487.8

87.2

147.4

231.3

106

344.4

133

494.1

89.1

150.1

234.9

107

349.3

134

500.5

91.0

152.8

238.6

108

354.2

135

506.9

92.9

155.5

242.3

109

359.1

136

513.4

94.9

158.2

246.0

110

364.1

137

520.0

96.8

161.0

249.8

111

369.1

138

526.6

98.8

163.8

253.7

112

374.2

139

533.3

100.9

166.7

257.5

113

379.4

140

540.1

102.9

169.6

261.4

114

384.6

141

547.0

105.0

172.5

265.4

115

389.9

142

553.9

107.1

175.4

269.4

116

395.2

143

560.9

109.2

178.4

273.5

117

400.5

144

567.9

111.4

181.5

277.6

118

405.9

145

575.1

113.6

184.5

281.7

119

411.4

146

582.3

115.8

187.6

285.9

120

416.9

147

589.6

118.1

190.7

290.1

121

422.5

148

596.9

120.3

193.9

294.4

122

428.2

149

604.4

122.7

197.1

298.7

123

433.9

150

611.9

125.0

200.4

303.0

124

439.6

127.4

203.6

307.5

125

445.4

129.8

207.0

311.9

126

451.3

132.2

210.3

100

316.4

127

457.3

4. The sensing bulb is fully insulated.

5. If the sensing bulb is installed on a vertical portion of the suction line, the sensing bulb should be placed upstream of suction line trap.

Table 6 - R-410A Refrigerant Temperature-Pressure Chart

Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of life. Installation and service must be performed by a qualified installer. A copy of this IOM should be kept with the unit.

WARNING

Operation

Unit operations should be controlled with thermostat or unit controller, never at the main power supply, except for emergency or complete shutdown of the unit.

Electric Heating Operation

When a call for heating (G and W1, W2, etc.) is made the supply fan motors and electric resistance heaters will energize. Heating is accomplished by passing electrical current through a specified amount of resistance heaters which will produce the required heat.

On a fault condition the main limit located in the supply air or the auxiliary limit located downstream the supply blower will remove power from all contactors.

Steam or Hot Water Preheating Operation

Valve control for steam and hot water heating coils are by others. Heating is accomplished by passing steam or hot water through the steam or hot water coil assembly.

Chilled Water or Non-Compressorized DX Cooling Operation

Valve controls for chilled water cooling coil and non-compressorized DX coil are by others.

Modulating Electric Preheat

Electric preheat is used to temper the incoming outside air to the unit based on an enable control signal and outside air conditions. Electric preheat has a maximum operation outside air temperature of 60°F and a maximum preheat discharge air temperature of 80°F.

Maintenance

(See back of the manual for maintenance log.)

At least once each year, a qualified service technician should check out the unit. Supply fans, evaporator coils and air filters should be inspected monthly.

Periodically during operation, it is necessary to perform routine service checks on the performance of the unit. This includes checking of the air flow, the air filters, condenser water flow and refrigerant charge.

See Startup section for information on air flow adjustment and refrigerant charge adjustment.

DX Cooling

Set unit controls to cooling mode of operation with supply fans on. Check the fans for correct operating direction, amperage and voltage. Check compressor operation, rotation, amperage and voltage to the unit nameplate (check the amperage on the load side of the compressor contactor).

Condensate Drain Pans

Drain pans will have moisture present and require periodic cleaning to prevent microbial growth. Cleaning of the drain pans will also prevent any possible plugging of the drain lines and overflow of the pan itself. Cleaning of the drain pans and inside of the unit should be done only by qualified personnel.

Electric shock hazard. Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

WARNING

Harsh chemicals, household bleach, or acid cleaners should not be used to clean outdoor or indoor e-coated coils. These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion and attack the e-coating. If there is dirt below the surface of the coil, use the recommended coil cleaners.

High velocity water from a pressure washer or compressed air should only be used at a very low pressure to prevent fin and/or coil damages. The force of the water or air jet may bend the fin edges and increase airside pressure drop. Reduced unit performance or nuisance unit shutdowns may occur.

CAUTION

E-Coated Coil Cleaning

Documented routine cleaning of e-coated coils is required to maintain coating warranty coverage.

Surface loaded fibers or dirt should be removed prior to water rinse to prevent restriction of airflow. If unable to back wash the side of the coil opposite of the coils entering air side, then surface loaded fibers or dirt should be removed with a vacuum cleaner. If a vacuum cleaner is not available, a soft non-metallic bristle brush may be used. In either case, the tool should be applied in the direction of the fins. Coil surfaces can be easily damaged (fin edges bent over) if the tool is applied across the fins.

Use of a water stream, such as a garden hose, against a surface loaded coil will drive the fibers and dirt into the coil. This will make cleaning efforts more difficult. Surface loaded fibers must be completely removed prior to using low velocity clean water rinse.

A monthly clean water rinse is recommended for coils that are applied in coastal or industrial environments to help to remove chlorides, dirt, and debris. It is very important when rinsing, that water temperature is less than 130°F and pressure is than 900 psig to avoid damaging the fin edges. An elevated water temperature (not to exceed 130°F) will reduce surface tension, increasing the ability to remove chlorides and dirt.

Quarterly cleaning is essential to extend the life of an e-coated coil and is required to maintain coating warranty coverage.

Coil cleaning shall be part of the unit’s

regularly scheduled maintenance procedures. Failure to clean an e-coated coil will void the warranty and may result in reduced efficiency and durability.

For routine quarterly cleaning, first clean the coil with the below approved coil cleaner. After cleaning the coils with the approved cleaning agent, use the approved chloride remover to remove soluble salts and revitalize the unit.

Recommended Coil Cleaner

The following cleaning agent, assuming it is

used in accordance with the manufacturer’s

directions on the container for proper mixing and cleaning, has been approved for use on e-coated coils to remove mold, mildew,

Blower wheels and bands must be inspected for excessive dust build up periodically and cleaned if required. Excessive dust build up on blower wheels may cause an unbalanced state; leading to vibration and/or component failure. Damages due to excessive dust build up will not be covered under factory warranty.

CAUTION

Electric shock hazard. Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

WARNING

dust, soot, greasy residue, lint and other particulate:

Enviro-Coil Concentrate, Part Number HEC01.

Recommended Chloride Remover

CHLOR*RID DTS™ should be used to remove soluble salts from the e-coated coil, but the directions must be followed closely. This product is not intended for use as a degreaser. Any grease or oil film should first be removed with the approved cleaning agent.

Remove Barrier - Soluble salts adhere themselves to the substrate. For the effective use of this product, the product must be able to come in contact with the salts. These salts may be beneath any soils, grease or dirt; therefore, these barriers must be removed prior to application of this product. As in all surface preparation, the best work yields the best results.

Apply CHLOR*RID DTS - Apply directly onto the substrate. Sufficient product must be applied uniformly across the substrate to thoroughly wet out surface, with no areas missed. This may be accomplished by use of a pump-up sprayer or conventional spray gun. The method does not matter, as long as the entire area to be cleaned is wetted. After the substrate has been thoroughly wetted, the salts will be soluble and is now only necessary to rinse them off.

Rinse - It is highly recommended that a hose be used, as a pressure washer will damage the fins. The water to be used for the rinse is recommended to be of potable quality, though a lesser quality of water may be used if a small amount of CHLOR*RID DTS is added. Check with CHLOR*RID International, Inc. for recommendations on lesser quality rinse water.

Supply Fans

Supply Fan Lubrication

All original blower motors and bearings are furnished with factory lubrication. Some applications will require that bearings be relubricated periodically. The schedule will depend on the operating duty, temperature variations or other severe atmospheric conditions.

Bearings should be re-lubricated when at normal operating temperatures, but not running. Rotate the fan shaft by hand and add only enough grease to purge the seals. DO NOT OVERLUBRICATE.

Recommended greases are: SHELL OIL - DOLIUM R CHEVRON OIL - SRI No. 2 TEXACO INC. - PREMIUM RB

Filter Replacement

Monthly filter inspection is required to maintain optimum unit efficiency.

Electric shock hazard. Shut off all electrical power to the unit to avoid shock hazard or injury from rotating parts.

WARNING

It is strongly recommended that filter media be replaced monthly. Filters are located upstream of the evaporator coil. Open access panel and pull filters straight out to inspect all of the filters. Replace filters with the size indicated on each filter. Arrow on the replacement filters must point towards the blower.

Replacement Parts

Parts for AAON equipment may be obtained from AAON at www.aaonparts.com. When ordering parts, reference the unit serial number and part number.

AAON-Longview Customer Service Department

203 Gum Springs Road Longview, TX 75602 Ph: 903-236-4403 Fax: 903-236-4463 www.aaon.com

Note: Before calling, technician should have model and serial number of the unit available for the service department to help answer questions regarding the unit.

Feature 6A

(Quantity) Size

Type

No Pre Filters

(1) 16” x 25” x 2”

Pleated, 30% Eff, MERV 8

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 16” x 25” x 2” and

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6A

(Quantity) Size

Type

No Pre Filters

(1) 16” x 25” x 2”

Pleated, 30% Eff, MERV 8

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 16” x 25” x 2” and

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Filter Information

Table 7 - H3 Series A Cabinet Pre Filters

Table 8 - V3 Series A Cabinet Pre Filters

Feature 6A

(Quantity) Size

Type

No Pre Filters

(2) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(2) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(2) 16” x 20” x 2” and

(2) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6A

(Quantity) Size

Type

No Pre Filters

(1) 24” x 24” x 2”

Pleated, 30% Eff, MERV 8

(1) 24” x 24” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 24” x 24” x 2” and

(1) 24” x 24” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 9 - H3 Series B Cabinet Pre Filters

Table 10 - V3 Series B Cabinet Pre Filters

Feature 6A

(Quantity) Size

Type

No Pre Filters

(2) 20” x 20” x 2" and

(1) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

(2) 20” x 20” x 4" and

(1) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(2) 20” x 20” x 2" and

(1) 16” x 20” x 2"

and

(2) 20” x 20” x 4" and

(1) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6A

(Quantity) Size

Type

No Pre Filters

(4) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(4) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(4) 16” x 20” x 2” and

(4) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 11 - H3 Series C Cabinet Pre Filters

Table 12 - V3 Series C Cabinet Pre Filters

Feature 6A

(Quantity) Size

Type

No Pre Filters

(1) 20” x 20” x 2” and

(4) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

(1) 20” x 20” x 4” and

(4) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 20” x 20” x 2” and

(4) 16” x 20” x 2"

and

(1) 20” x 20” x 4” and

(4) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6A

(Quantity) Size

Type

No Pre Filters

(2) 20” x 20” x 2” and

(4) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

(2) 20” x 20” x 4” and

(4) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(2) 20” x 20” x 2” and

(4) 16” x 20” x 2"

and

(2) 20” x 20” x 4” and

(4) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 13 - H3 Series D Cabinet Pre Filters

Table 14 - V3 Series D Cabinet Pre Filters

Feature 6A

(Quantity) Size

Type

No Pre Filters

(10) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(10) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(10) 16” x 20” x 2” and

(10) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6A

(Quantity) Size

Type

No Pre Filters

(3) 20” x 20” x 2” and

(6) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

(3) 20” x 20” x 4” and

(6) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(3) 20” x 20” x 2” and

(6) 16” x 20” x 2"

and

(3) 20” x 20” x 4” and

(6) 16” x 20” x 4"

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 15 - H3 Series E Cabinet Pre Filters

Table 16 - V3 Series E Cabinet Pre Filters

Feature 6B

(Quantity) Size

Type

No Unit Filters

(1) 16” x 25” x 2”

Pleated, 30% Eff, MERV 8

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 16” x 25” x 2” and

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6B

(Quantity) Size

Type

No Unit Filters

(1) 16” x 25” x 2”

Pleated, 30% Eff, MERV 8

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 16” x 25” x 2” and

(1) 16” x 25” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 17 - H3 Series A Cabinet Unit Filters

Table 18 - V3 Series A Cabinet Unit Filters

Feature 6B

(Quantity) Size

Type

No Unit Filters

(2) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(2) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(2) 16” x 20” x 2” and

(2) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6B

(Quantity) Size

Type

No Unit Filters

(1) 24” x 24” x 2”

Pleated, 30% Eff, MERV 8

(1) 24” x 24” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(1) 24” x 24” x 2” and

(1) 24” x 24” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 19 - H3 Series B Cabinet Unit Filters

Table 20 - V3 Series B Cabinet Unit Filters

Feature 6B

(Quantity) Size

Type

No Unit Filters

(4) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(4) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(4) 16” x 20” x 2” and

(4) 16” x 20” x 4”

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Feature 6B

(Quantity) Size

Type

No Unit Filters

(4) 18” x 24” x 2"

Pleated, 30% Eff, MERV 8

(4) 18” x 24” x 4"

Pleated, 30% Eff, MERV 8

Pleated, 65% Eff, MERV 11

Pleated, 85% Eff, MERV 13

Pleated, 95% Eff, MERV 14

(4) 18” x 24” x 2"

and

(4) 18” x 24” x 4"

Pleated, 30% Eff, MERV 8 and

Pleated, 30% Eff, MERV 8

Pleated, 30% Eff, MERV 8 and

Pleated, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Pleated, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Pleated, 95% Eff, MERV 14

Table 21 - V3 Series C Cabinet Unit Filters

Table 22 - V3 Series D Cabinet Unit Filters

Feature 6C

(Quantity) Size

Type

No Final Filters

(1) 16” x 25” x 2”

Pleated, 30% Eff, MERV 8

(1) 16” x 25” x 12”

Cartridge, 65% Eff, MERV 11

Cartridge, 85% Eff, MERV 13

Cartridge, 95% Eff, MERV 14

(1) 16” x 25” x 2” and

(1) 16” x 25” x 12”

Pleated, 30% Eff, MERV 8 and

Cartridge, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Cartridge, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Cartridge, 95% Eff, MERV 14

Feature 6C

(Quantity) Size

Type

No Final Filters

(1) 16” x 25” x 2”

Pleated, 30% Eff, MERV 8

Feature 6C

(Quantity) Size

Type

No Final Filters

(2) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(2) 16” x 20” x 12”

Cartridge, 65% Eff, MERV 11

Cartridge, 85% Eff, MERV 13

Cartridge, 95% Eff, MERV 14

(2) 16” x 20” x 2” and

(2) 16” x 20” x 12”

Pleated, 30% Eff, MERV 8 and

Cartridge, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Cartridge, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Cartridge, 95% Eff, MERV 14

Feature 6C

(Quantity) Size

Type

No Final Filters

(2) 24” x 12” x 2”

Pleated, 30% Eff, MERV 8

Table 23 - H3 Series A Cabinet Final Filters

Table 24 - V3 Series A Cabinet Final Filters

Table 25 - H3 Series B Cabinet Final Filters

Table 26 - V3 Series B Cabinet Final Filters

Feature 6C

(Quantity) Size

Type

No Final Filters

(2) 20” x 20” x 2” and

(1) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

(2) 20” x 20” x12” and

(1) 16” x 20” x 12"

Cartridge, 65% Eff, MERV 11

Cartridge, 85% Eff, MERV 13

Cartridge, 95% Eff, MERV 14

(2) 20” x 20” x 2” and

(1) 16” x 20” x 2"

and

(2) 20” x 20” x12” and

(1) 16” x 20” x 12"

Pleated, 30% Eff, MERV 8 and

Cartridge, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Cartridge, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Cartridge, 95% Eff, MERV 14

Feature 6C

(Quantity) Size

Type

No Final Filters

(4) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

Feature 6C

(Quantity) Size

Type

No Final Filters

(1) 20” x 20” x 2" and

(4) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

(1) 20” x 20” x 12" and

(4) 16” x 20” x 12"

Cartridge, 65% Eff, MERV 11

Cartridge, 85% Eff, MERV 13

Cartridge, 95% Eff, MERV 14

(1) 20” x 20” x 2" and

(4) 16” x 20” x 2"

and

(1) 20” x 20” x 12" and

(4) 16” x 20” x 12"

Pleated, 30% Eff, MERV 8 and

Cartridge, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Cartridge, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Cartridge, 95% Eff, MERV 14

Feature 6C

(Quantity) Size

Type

No Final Filters

(2) 20” x 20” x 2" and

(4) 16” x 20” x 2"

Pleated, 30% Eff, MERV 8

Table 27 - H3 Series C Cabinet Final Filters

Table 28 - V3 Series C Cabinet Final Filters

Table 29 - H3 Series D Cabinet Final Filters

Table 30 - V3 Series D Cabinet Final Filters

Feature 6C

(Quantity) Size

Type

No Final Filters

(10) 16” x 20” x 2”

Pleated, 30% Eff, MERV 8

(10) 16” x 20” x 12”

Cartridge, 65% Eff, MERV 11

Cartridge, 85% Eff, MERV 13

Cartridge, 95% Eff, MERV 14

(10) 16” x 20” x 2” and

(10) 16” x 20” x 12”

Pleated, 30% Eff, MERV 8 and

Cartridge, 65% Eff, MERV 11

Pleated, 30% Eff, MERV 8 and

Cartridge, 85% Eff, MERV 13

Pleated, 30% Eff, MERV 8 and

Cartridge, 95% Eff, MERV 14

Feature 6C

(Quantity) Size

Type

No Final Filters

(3) 20 x 20 x 2” and

(6) 16 x 20 x 2"

Pleated, 30% Eff, MERV 8

Table 31 - H3 Series E Cabinet Final Filters

Table 32 - V3 Series E Cabinet Final Filters

Refrigerant Piping Diagrams

Figure 11 – A/C only piping, AHU above CU

Figure 12 – A/C only piping, AHU below CU

Figure 13 – Modulating hot gas reheat piping, AHU above CU

Figure 14 – Modulating hot gas reheat piping, AHU below CU

Figure 15 – Hot gas bypass piping, AHU above CU

Figure 16 – Hot gas bypass piping, AHU below CU

Figure 17 – Modulating hot gas reheat with hot gas bypass piping, AHU above CU

Figure 18 – Modulating hot gas reheat with hot gas bypass piping, AHU below CU

Figure 19 – Heat pump piping, AHU above CU

Figure 20 – Heat pump piping, AHU below CU

Figure 21 – Heat pump with modulating hot gas reheat piping, AHU above CU Figure 22 – Heat pump with modulating hot gas reheat piping, AHU below CU

Job Name:_______________________________________________

Date:______________

Address:______________________________________________________________________

______________________________________________________________________________

Model Number:_________________________________________________________________

Serial Number:_____________________________________________

Tag:_______________

Startup Contractor:______________________________________________________________

Address:______________________________________________________________________

_______________________________________________________

Phone:______________

Installing contractor should verify the following items.

1. Is there any visible shipping damage?

Yes No

2. Is the unit level?

Yes No

3. Are the unit clearances adequate for service and operation?

Yes No

4. Do all access doors open freely and are the handles operational?

Yes No

5. Have all shipping braces been removed?

Yes No

6. Have all electrical connections been tested for tightness?

Yes No

7. Does the electrical service correspond to the unit nameplate?

Yes No

8. On 208/230V units, has transformer tap been checked?

Yes No

9. Has overcurrent protection been installed to match the unit nameplate

requirement?

Yes No

10. Have all set screws on the fans been tightened?

Yes No

11. Do all fans rotate freely?

Yes No

12. Does the field water piping to the unit appear to be correct per design

parameters?

Yes No

13. Is all copper tubing isolated so that it does not rub?

Yes No

14. Have the damper assemblies been inspected?

Yes No

15. Are air filters installed with proper orientation?

Yes No

16. Have condensate drain and p-trap been connected?

Yes No

17. Is the TXV sensing bulb in the correct location?

Yes No

18. Does the TXV sensing bulb have proper thermal contact and is properly

insulated?

Yes No

Pre Startup Checklist

H3/V3 Series Startup Form

Ambient Dry Bulb Temperature ________°F

Ambient Wet Bulb Temperature ________°F

Alignment

Check Rotation

Nameplate Amps________

Number

Band Size_____________________

VAV Controls_________________

VFD Frequency________________

Check Rotation

Number

Head

Pressure

PSIG

Suction

Pressure

PSIG

Crankcase

Heater

Amps 1 2 3

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Ambient Temperature

Supply Fan Assembly

Compressors/DX Cooling

Refrigeration System 1 - Cooling Mode

Refrigeration System 2 - Cooling Mode

Refrigeration System 3 - Cooling Mode

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Pressure

Saturated

Temperature

Line

Temperature

Sub-cooling

Superheat

Discharge

N/A

Suction

N/A

Liquid

N/A

Refrigeration System 4 - Cooling Mode

Refrigeration System 1 - Heating Mode (Heat Pump Only)

Refrigeration System 2 - Heating Mode (Heat Pump Only)

Refrigeration System 3 - Heating Mode (Heat Pump Only)

Refrigeration System 4 - Heating Mode (Heat Pump Only)

Water-Cooled Condenser

Air-Cooled Condenser

No Water Leaks

Condenser Safety Check

Water Flow ________ gpm

Water Inlet Temperature ________°F

Water Outlet Temperature ________°F

Operation Check

Damper Wiring Check

Gears Check

Damper Actuator Type:__________________________________________________________

Economizer Changeover Type and Operations:_______________________________________

1. Has the entire system been flushed and pressure checked?

Yes No

2. Has the entire system been filled with fluid?

Yes No

3. Has air been bled from the heat exchangers and piping?

Yes No

4. Is the glycol the proper type and concentration (N/A if water)?

Yes No

5. Is there a minimum load of 50% of the design load?

Yes No

6. Has the water piping been insulated?

Yes No

7. What is the freeze point of the glycol (N/A if water)? ______________________________

Unit Configuration

Mixing Box Dampers

Water/Glycol System

Alignment

Check Rotation

Nameplate Amps________

Number

Stages__________

Limit Lockout

Aux. Limit Lockout

Stage

Amps

Stage

Amps 1 5 2 6 3 7

4 8

Limit Lockout

Aux. Limit Lockout

Outside Air Temperature Setpoint__________°F

Preheat Leaving Air Temperature Setpoint__________°F

Stage

Amps

Stage

Amps 1 3 2 4

Air-Cooled Condenser Fans

Electric Heating

Electric Preheating

Entry Date

Action Taken

Name/Tel.

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 replacement parts. The responsibility for proper startup, maintenance and servicing of the equipment falls to the owner and qualified licensed technician.

Literature Change History June 2010

Revision of the IOM adding PVC and CPVC piping Caution.

June 2011

Update of the IOM adding the electronic startup form.

April 2012

Update of the IOM changing the 2” pleated 30% efficient filter from MERV 7 to MERV 8,

adding additional modulating hot gas reheat options to Feature 2, changing the Service Clearances to allow for coil removal, adding condensate drain connection size information, changing the required suction riser trap requirement for variable capacity scroll compressor circuits to every 10 feet, correcting the length of the drip line in piping diagrams to 120”, correcting the Modulating Hot Gas Reheat and Modulating Hot Gas Reheat with Hot Gas Bypass piping diagrams to show the liquid line tee connection factory installed, adding the Heat Pump with Field Installed Modulating Hot Gas Reheat Split System Piping Diagram, adding the index of tables and figures, and updating the table of contents.

July 2012

Update of the IOM showing that the steam heating coil option is stream distributing (Model Option B1 = 4)

June 2013 Updated for Rev B design revision change, updated configurator options, updated the filter information, updated the minimum clearance definitions, added suspension installation recommendations, and updated the piping diagrams. New part number assigned.

November 2013

Added proper sealing of electrical and gas entries caution.

May 2014 Added electric preheat options and installation information and added TXV sensing bulb installation instructions.

AAON

203 Gum Springs Rd.

Longview, TX 75602-1721

Phone: 903-236-4403

Fax: 903-236-4463

www.aaon.com

H3/V3 Series

Installation, Operation &

Maintenance

R94201 · Rev. A · 140521

(ACP J00188)

It is the intent of AAON to provide accurate and current product information. However, in the interest of product improvement, AAON reserves the right to change pricing, specifications, and/or design of its product without notice, obligation, or liability.

AAON® and AAONAIRE® are registered trademarks of AAON, Inc., Tulsa, OK.

AAON V3-E User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Safety

H3/V3 Base Model Description

General Information

Codes and Ordinances

Receiving Unit

Storage

Direct Expansion (DX) Systems

Wiring Diagrams

Condensate Drain Pans

Installation

Locating the Unit

Lifting and Handling the Unit

Electrical

Duct Connection

Condensate Drain Piping

Heating Coils

Chilled Water Coil

Electric Preheat

Refrigerant Piping

Determining Refrigerant Line Size

Startup

Supply Fans

Fan Air Flow Adjustment

Filters

Adjusting Refrigerant Charge

Operation

Electric Heating Operation

Steam or Hot Water Preheating Operation

Chilled Water or Non-Compressorized DX Cooling Operation

Modulating Electric Preheat

Maintenance

DX Cooling

Condensate Drain Pans

E-Coated Coil Cleaning

Supply Fans

Filter Replacement

Replacement Parts

AAON-Longview Customer Service Department

Filter Information

H3/V3 Series Startup Form

Maintenance Log