Aaon H2-A Installation Manual
2
H2 / V
Horizontal / Vertical
Air Handlers
Installation and Operation Manual
800 – 10,000 CFM
FOR YOUR SAFETY
DO NOT STORE OR USE GASOLINE OR OTHER
FLAMMABLE VAPORS AND LIQUIDS IN THE
VICINITY OF THIS OR ANY OTHER APPLIANCE.
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.
WARNING
Owner should pay particular attention to the words:
NOTE, CAUTION, and WARNING. NOTES are
intended to clarify or make the installation easier.
CAUTIONS are given to prevent equipment
damage. WARNINGS are given to alert owner that
personal injury and/or equipment damage may
result if installation is not handled properly.
Feature Overview
1
Fully Insulated 1”
Double-Wall Construction
2
Painted
Galvanized Steel
Construction
3
Duct or
Accessory Flange
4
Filter Access
Double-wall construction for reduced cabinet
1
loss, better air quality, and easier cleaning.
Attractive pre-painted powder coat finish on a
2
cabinet that is built to last.
1” flange allows connection to accessory boxes,
3
fiberglass or metal ductwork.
4
Easy slide out filter access for 2” or 4” pleated
filters. Add a special filtration section for more
air cleaning capability.
Panel removes easily to clean or service the
5
coils, and other internal components.
Duct or Accessory
10
Flange
9
Plenum Fan Access
8
Cast Half-Turn Handles
7
Control Panel Access
& More Coil Access
6
Drain Connection
on Either Side
5
Coil Access
Stainless steel or galvanized sloped drain pan
6
can be selected for left or right hand connection.
Remove door for access to fully enclosed
7
control box and more access to coils.
Half-turn cast handles pull door firmly against
8
automotive style gasketing for tight air seal.
Full access to fan wheel, motor, and drive
9
components for quick servicing.
2” flange allows connection to accessory boxes,
10
fiberglass, or metal ductwork.
www.aaon.com
2
Contents
1. Description……………….....………... 4 4. Start-Up…...……………….....………... 15
Important Safety Information 4
Unit Data 5
Unit Orientation (Left or Right Hand) 7
Model Number Nomenclature 8
Base Model Number
Feature Number
2. Delivery…...……………….....………... 11
Receipt & Inspection 11
Storage 11
3. Installation……..………….....………... 12
General 12
Certification 12
Codes & Ordinances 12
Handling 12
Service & Installation Clearance 12
Mounting & Suspension 13
Sealing 13
Cooling Equipment 13
Heating Equipment 14
Condensate Piping
Electrical
Thermostat
Filters
14
14
14
14
Tables: Figures:
5.1
5.2
6.1
6.2
18.1
20.1
21.1
H2 General Data
V2 General Data
Water Coil Connection Sizes
DX Coil Connection Sizes
Bearing Setscrew Torques
Bearing Lubrication Schedule
Troubleshooting
General 15
Check Out 15
Procedures 15
Commissioning 16
5. Operation & Maintenance....………... 18
General 18
Maintenance Schedule 18
Blower Assembly 18
Indoor Coils 19
Heating 19
Cleaning 20
Chilled Water 20
Lubrication 20
Service 20
Filters 20
6. Troubleshooting…………….………... 21
Common Problems 21
7. Factory Start-Up Form.…….………... 22
7a
Unit Orientation
8a
Model Number Structure
12a
Service Clearance
13a
Air Handler Suspension
19a
Angular Misalignment
19b
Parallel Misalignment
19c
Belt Deflection
3
1. Description
Important Safety Information
ONLY QUALIFIED PERSONNEL SHOULD
PERFORM INSTALLATION, OPERATION, AND
MAINTENANCE OF EQUIPMENT DESCRIBED IN
THIS MANUAL.
H2/V2 Air Handlers are designed for safe operation
when installed, operated, and maintained within
design specifications and the instructions set forth
in this manual. It is necessary to follow these
instructions to avoid personal injury or damage to
equipment or property during equipment
installation, operation, start-up, and maintenance.
The information in this manual should be followed
exactly to prevent property damage or personal
injury.
WARNING
WARNING
Installation and service must be performed by a
qualified installer or service agency.
NOTE
This equipment is protected by a standard limited
warranty under the condition that initial installation,
service, start-up, and maintenance is performed
according to the instructions set forth in this
manual. This manual should be read in its entirety
prior to installation and before performing any
service or maintenance work.
Equipment described in this manual is available
with many optional accessories. If you have
questions after reading this manual in its entirety,
consult other factory documentation or contact
your Sales Representative to obtain further
information before manipulating this equipment or
its optional accessories.
IMPORTANT!
WARNING
RISK OF DAMAGE, INJURY, AND LOSS OF LIFE
– Improper installation, adjustment, alteration,
service, or maintenance can cause property
damage, personal injury, or loss of life. A qualified
installer or service agency must perform
installation and service.
RISK OF ELECTRICAL SHOCK – Unit may have
multiple power supplies. Turn the electrical power
to the unit OFF at disconnect switch(es) before
attempting to perform any service or maintenance.
WARNING
RISK OF INJURY FROM HOT PARTS –
Disconnect all power before servicing electric
resistance heating elements to prevent serious
injury resulting from automatic starts. Unit may
have multiple power supplies.
WARNING
RISK OF INJURY FROM HOT PARTS –
Disconnect all power, close all isolation valves,
and allow equipment to cool before servicing
equipment with hot water and steam heating coils.
Hot water will circulate even after power is off.
Equipment may have multiple power supplies.
WARNING
RISK OF INJURY FROM MOVING PARTS Disconnect all power before servicing motor or
blower to prevent serious injury resulting from
automatic starts. Motor and blower may have
multiple power supplies.
WARNING
WARNING
These units must not be used as a “construction
heater” at any time during any phase of
construction. Very low return air temperatures,
harmful vapors, and misplacement of the filters will
damage the unit and its efficiency.
NOTE
www.aaon.com
4
Unit Data
Table 5.1
Coil Face Area Designation
*Note: 1/2 HP motors are direct drive. All other motors are belt drive with adjustable motor sheave.
** 2 HP motor not available in 265/1/60.
Electric Heating KW 7, 14 7, 14, 21 14, 21, 28, 35, 42 14, 28, 42, 56, 70
Quantity / Wheel Dia. / Type
Blower Motor
Maximum HP
FPT Drain Connection Size
Pleated Filter Size
Cabinet Size
CFM Range
Blower
Double Oversize 3 5 7.5
Triple Oversize 5 7.5 10
(Quantity)
H2 General Data
A B C C+ D
1 1 1 2 3 4 1 2
800 - 1200 800 - 2000 1800 - 3000 1800 - 4000 2000 - 4800 2500 - 6000 3000 - 6000 4300 - 10000
1 / 10” / FC 1 / 15” / BI 1 / 18.5” / BI 1 / 18.5” / BI 1 / 27” / BI
Standard 1/2* 1 1 2 3
Oversize 2** 2 3 5
3/4”
16”x20”x2
(1)
16”x20”x2
(2)
24”x24”x2”
(2)
Table 5.2
Coil Face Area Designation
Electric Heating KW 7, 14 7, 14, 21 14, 21, 28, 35, 42 14, 28, 42, 56, 70
Quantity / Wheel Dia. / Type
Blower Motor
Maximum HP
FPT Drain Connection Size
Pleated Filter Size
Cabinet Size
CFM Range
Blower
Double Oversize 3 5 7.5
Triple Oversize 5 7.5 10
(Quantity)
V2 General Data
A B C C+ D
1 1 1 2 3 4 1 2
800 - 1200 800 - 2000 1800 - 3000 1800 - 4000 2000 - 4800 2500 - 6000 3000 – 6000 4300 - 10000
1 / 10” / FC 1 / 15” / BI 1 / 18.5” / BI 1 / 18.5” / BI 1 / 27” / BI
Standard 1/2* 1 1 2 3
Oversize 2** 2 3 5
3/4”
16”x20”x2
(1)
24”x24”x2”
(1)
16”x 20”x2”
(4)
*Note: 1/2 HP motors are direct drive. All other motors are belt drive with adjustable motor sheave.
** 2 HP motor not available in 265/1/60.
24”x24”x2”
(3)
16”x20”x2”
(6)
16”x20”x2”
(10)
16”x20”x2”
(9)
5
Table 6.1
Water Coil Connection Sizes
GPM
1.5 – 2.5 5/8 1/2
2.6 – 7 7/8 1/2
7.1 – 14 1 1/8 1
14.1 – 24 1 3/8 1 1/4
24.1 – 40 1 5/8 1 1/2
40.1 – 80 2 1/8 2
80.1 – 150 2 5/8 2 1/2
150.1 – 250 3 1/8 3
Sweat Conn.
Size (In.)
MPT Conn.
Size (In.)
Table 6.2
Coil Face Area Designation 1 1 1 2 3 4 1 2
Single Circuit
Double Circuit
Cabinet Size A B C C+ D
Coil Selection Stub Out Size (Suction - Liquid)
Standard
Oversized
Standard
Oversized
DX Coil Stub Out Connection Sizes
7/8” – 1/2 ” 7/8” – 1/2 ” 1 1/8” – 5/8” 1 1/8” – 5/8” 1 3/8” – 5/8”
1 1/8” – 5/8”
7/8” – 1/2 ” 1 1/8” – 5/8” 1 1/8” – 5/8” 1 3/8” – 5/8”
1 1/8” – 5/8” 1 1/8” – 5/8” 1 3/8” – 5/8”
1 1/8” – 5/8”
www.aaon.com
6
Unit Orientation
Determine left hand or right hand piping connections:
Figure 7a, Unit Orientation
Horizontal Air Handler
Left Hand Side
Return Air Supply Air
AIRFLOW
Connections & service
access on right side for
right hand orientation
Right Hand Side
Remember: Consider the air to be “hitting the
back of your head” as you face the return air inlet.
Vertical Air Handler
Left Hand Side
Return Air
AIRFLOW
Supply Air
Top View
Top View
Right Hand Side
Connections and service
access on right side for
right hand orientation
7
Model Number Nomenclature
The base model number identifies main unit features. The feature number identifies optional features ordered with
the equipment. Together, they comprise the complete model number.
Figure 8a, Model Number Structure
Base Model Number
Feature Number
H2 – C1 – 2 – 10 – 3B1
:
A 0 0 0 D 0 A 0 0 0
Complete Model Number
www.aaon.com
8
Base Model Number
TYPE
2
H =
V =
TYPE
Horizontal
Vertical
CABINET SIZE
B
C+
Coil Face Area
1 = Standard Only
A
1 = Standard Only
1 = Standard
C
2 = Oversize
3 = Double Oversize
4 = Triple Oversize
1 = Standard
D
2 = Oversize
MAIN FEATURES
CABINET
SIZE
- - - -
VOLTAGE
COOLING
HEATING
VOLTAGE
1 =
208-230V/1Ø/60HZ
2 =
208-230V/3Ø/60HZ
3 =
460V/3Ø/60HZ
4 =
575V/3Ø/60HZ
5 =
115V/1Ø/60HZ
6 =
380-415V/3Ø/50HZ
7 =
265V/1Ø/60HZ
8 =
115V/1Ø/60HZ
COOLING
00 =
10 =
16 =
50 =
56 =
20 =
30 =
40 =
99 =
No Cooling
Evaporator / Single Circuit
Evaporator / Single Circuit – Six Row
Evaporator / Double Circuit
Evaporator / Double Circuit – Six Row
Chilled Water / Standard Coil
Chilled Water / Optional Coil
Chilled Water / Optional Coil – Six Row
Special Coil Selection
kW*
A =
B =
C =
D =
H =
E =
F =
G =
000 =
100 =
200 =
3 =
7 (5.3)
14 (10.5)
21 (15.8)
28 (21.0)
35 (26.3)
42 (31.5)
56 (42.0)
70 (52.5)
HEATING
No Heating
Steam Coil
Hot Water Coil
Electric Heat
STAGING
1 =
1 Stage
2 =
2 Stage
3 =
3 Stage
4 =
4 Stage
*kW in parentheses is 208V
9
Loading...