Aaon H3-A Installation 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 ......................................................................................................................................... 35

Adjusting Refrigerant Charge ................................................................................................... 35

Operation....................................................................................................................................... 38

Electric Heating Operation ........................................................................................................ 38

Steam or Hot Water Preheating Operation ................................................................................ 38

Chilled Water or Non-Compressorized DX Cooling Operation ............................................... 38

Modulating Electric Preheat ...................................................................................................... 38

Maintenance .................................................................................................................................. 38

DX Cooling ............................................................................................................................... 38

Condensate Drain Pans .............................................................................................................. 38

E-Coated Coil Cleaning ............................................................................................................ 39

Supply Fans ............................................................................................................................... 40

Filter Replacement .................................................................................................................... 40

Replacement Parts ..................................................................................................................... 41

AAON-Longview Product Support ........................................................................................... 41

Filter Information .......................................................................................................................... 42

Refrigerant Piping Diagrams ........................................................................................................ 53

H3/V3 Series Startup Form ........................................................................................................... 65

Maintenance Log .......................................................................................................................... 70

Literature Change History............................................................................................................. 71

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 ................................................... 36

Table 5 - Acceptable Water-Cooled Refrigeration Circuit Values ............................................... 36

Table 6 - R-410A Refrigerant Temperature-Pressure Chart ......................................................... 37

Table 7 - H3 Series A Cabinet Pre Filters..................................................................................... 42

Table 8 - V3 Series A Cabinet Pre Filters..................................................................................... 42

Table 9 - H3 Series B Cabinet Pre Filters ..................................................................................... 43

Table 10 - V3 Series B Cabinet Pre Filters ................................................................................... 43

Table 11 - H3 Series C Cabinet Pre Filters ................................................................................... 44

Table 12 - V3 Series C Cabinet Pre Filters ................................................................................... 44

Table 13 - H3 Series D Cabinet Pre Filters................................................................................... 45

Table 14 - V3 Series D Cabinet Pre Filters................................................................................... 45

Table 15 - H3 Series E Cabinet Pre Filters ................................................................................... 46

Table 16 - V3 Series E Cabinet Pre Filters ................................................................................... 46

Table 17 - H3 Series A Cabinet Unit Filters ................................................................................. 47

Table 18 - V3 Series A Cabinet Unit Filters ................................................................................. 47

Table 19 - H3 Series B Cabinet Unit Filters ................................................................................. 48

Table 20 - V3 Series B Cabinet Unit Filters ................................................................................. 48

Table 21 - V3 Series C Cabinet Unit Filters ................................................................................ 49

Table 22 - V3 Series D Cabinet Unit Filters ................................................................................. 49

Table 23 - H3 Series A Cabinet Final Filters ................................................................................ 50

Table 24 - V3 Series A Cabinet Final Filters ................................................................................ 50

Table 25 - H3 Series B Cabinet Final Filters ................................................................................ 50

Table 26 - V3 Series B Cabinet Final Filters ................................................................................ 50

Table 27 - H3 Series C Cabinet Final Filters ................................................................................ 51

Table 28 - V3 Series C Cabinet Final Filters ................................................................................ 51

Table 29 - H3 Series D Cabinet Final Filters ................................................................................ 51

Table 30 - V3 Series D Cabinet Final Filters ................................................................................ 51

Table 31 - H3 Series E Cabinet Final Filters ................................................................................ 52

Table 32 - V3 Series E Cabinet Final Filters ................................................................................ 52

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- Typical wiring diagram with EC motor ...................................................................... 32

Figure 11 - Shows the jumper that is to be removed (jumped between 9 and GS). ..................... 33

Figure 12 - Potentiometer ............................................................................................................. 33

Figure 13 - Supply Fan Banding ................................................................................................... 34

Figure 14 – A/C only piping, AHU above CU ............................................................................. 53

Figure 15 – A/C only piping, AHU below CU ............................................................................. 54

Figure 16 – Modulating hot gas reheat piping, AHU above CU .................................................. 55

Figure 17 – Modulating hot gas reheat piping, AHU below CU .................................................. 56

Figure 18 – Hot gas bypass piping, AHU above CU .................................................................... 57

Figure 19 – Hot gas bypass piping, AHU below CU .................................................................... 58

Figure 20 – Modulating hot gas reheat with hot gas bypass piping, AHU above CU .................. 59

Figure 21 – Modulating hot gas reheat with hot gas bypass piping, AHU below CU.................. 60

Figure 22 – Heat pump piping, AHU above CU .......................................................................... 61

Figure 23 – Heat pump piping, AHU below CU .......................................................................... 62

Figure 24 – Heat pump with modulating hot gas reheat piping, AHU above CU ........................ 63

Figure 25 – Heat pump with modulating hot gas reheat piping, AHU below CU ........................ 64

R94201 · Rev. B · 151117

(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

H3/V3 Base Model Description

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

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 D= Field Installed Controls by Others + Isolation Relays

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: MODULATING ELECTRIC PREHEAT

0 = Standard - None A = 7.5 kW B = 15 kW C = 20 kW D = 22.5 kW E = 30 kW F = 40 kW G = 50 kW H = 60 kW

Feature 19: BLANK

0 = Standard - None

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 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

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

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