Bryant 582K 08 Series Installation and user guide

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53582013-01 Printed in U.S.A. Form No. SM582K-08-16-01 Pg 1 11-23 Replaces: New
Service and Maintenance Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 2
UNIT ARRANGEMENT AND ACCESS . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Routine Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SUPPLY FAN (BLOWER) SECTION . . . . . . . . . . . . . . . . 4
Supply Fan (Direct-Drive) . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2-Speed Indoor Fan Motor System . . . . . . . . . . . . . . . . . . 12
COOLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Condenser Coil Maintenance and Cleaning
Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Evaporator Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Evaporator Coil Metering Devices . . . . . . . . . . . . . . . . . . 14
THERMOSTATIC EXPANSION VALVE (TXV) . . . . . 14
TXV Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Replacing TXV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Refrigerant System Pressure Access Ports . . . . . . . . . . . . 14
PURON (R-410A) REFRIGERANT . . . . . . . . . . . . . . . . . 15
Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
COMPRESSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Replacing Compressor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Filter Drier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Condenser-Fan Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 26
Troubleshooting Cooling System . . . . . . . . . . . . . . . . . . . . 27
CONVENIENCE OUTLETS . . . . . . . . . . . . . . . . . . . . . . 28
Convenience Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Installing Weatherproof Cover . . . . . . . . . . . . . . . . . . . . . 28
Non-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Unit-Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Duty Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Fuse on Powered Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
SMOKE DETECTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Smoke Detector Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Smoke Detector Locations . . . . . . . . . . . . . . . . . . . . . . . . . 30
Completing Installation of Return Air Smoke Detector . . . 31
FIOP Smoke Detector Wiring and Response . . . . . . . . . . 32
SENSOR AND CONTROLLER TESTS . . . . . . . . . . . . . 32
Sensor Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Controller Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Dirty Controller Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Dirty Sensor Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Changing the Dirt Sensor Test . . . . . . . . . . . . . . . . . . . . . 33
Remote Station Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
SD-TRK4 Remote Alarm Test Procedure . . . . . . . . . . . . 33
Remote Test/Reset Station Dirty Sensor Test . . . . . . . . . 33
Dirty Sensor Test Using an SD-TRK4 . . . . . . . . . . . . . . . 34
Detector Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
PROTECTIVE DEVICES . . . . . . . . . . . . . . . . . . . . . . . . . 35
Compressor Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Relief Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Control Circuit, 24-V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
GAS HEATING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . 37
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fuel Types and Pressures . . . . . . . . . . . . . . . . . . . . . . . . . 37
Flue Gas Passageways . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Combustion-Air Blower . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Burners and Igniters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Burner Ignition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Orifice Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Troubleshooting Heating System . . . . . . . . . . . . . . . . . . . 45
ECONOMIZER SYSTEMS . . . . . . . . . . . . . . . . . . . . . . . 47
EconoMi$er IV (Field-Installed Accessory) . . . . . . . . . . . 48
EconoMi$er X (Factory-Installed Option) . . . . . . . . . . . . 56
PRE-START-UP/START-UP . . . . . . . . . . . . . . . . . . . . . . 66
START-UP, GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Unit Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Additional Installation/Inspection . . . . . . . . . . . . . . . . . . 67
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Return-Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Outdoor-Air Inlet Screens . . . . . . . . . . . . . . . . . . . . . . . . . 68
Compressor Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Internal Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . . . . . . . 68
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Main Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Heating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Ventilation (Continuous Fan) . . . . . . . . . . . . . . . . . . . . . . 68
FASTENER TORQUE VALUES . . . . . . . . . . . . . . . . . . . 69
APPENDIX A — MODEL NUMBER
NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
APPENDIX B — PHYSICAL DATA . . . . . . . . . . . . . . . . 71
APPENDIX C — GAS HEAT DATA . . . . . . . . . . . . . . . . 74
APPENDIX D — FAN PERFORMANCE . . . . . . . . . . . . 75
APPENDIX E — WIRING DIAGRAMS . . . . . . . . . . . . . 96
APPENDIX F — LOW AMBIENT CONTROL
SENSOR LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . 110
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
582K*08-16
Single Package Rooftop Gas Heat/Electric Cooling Unit
with Puron® (R-410A) Refrigerant
7.5 to 15 Nominal Tons

2
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment. Untrained personnel can per-
form the basic maintenance functions of replacing filters. Trained
service personnel should perform all other operations.
When working on air-conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and other
safety precautions that may apply. Follow all safety codes. Wear
safety glasses and work gloves. Use quenching cloth for unbrazing
operations. Have fire extinguishers available for all brazing
operations.
Follow all safety codes. Wear safety glasses and work gloves. Use
quenching cloth for brazing operations. Have fire extinguisher
available. Read these instructions thoroughly and follow all warn-
ings or cautions attached to the unit. Consult local building codes
and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety ALERT symbol
. When you see this symbol on the unit and in instructions or
manuals, be aware of the potential for physical injury hazards.
Understand the signal words DANGER, WARNING, and
CAUTION. These words are used with the safety ALERT sym-
bol. DANGER indicates a hazardous situation which, if not avoid-
ed, will result in death or severe personal injury. WARNING in-
dicates a hazardous situation which, if not avoided, could result in
death or personal injury. CAUTION indicates a hazardous situa-
tion which, if not avoided, could result in minor to moderate injury
or product and property damage. IMPORTANT is used to ad-
dress practices not related to physical injury. NOTE is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.
UNIT ARRANGEMENT AND ACCESS
General
Figures 1-4 show general unit arrangement and access
locations.
Fig. 1 — Typical Access Panel Locations
(size 8-14 units)
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury,
death and/or equipment damage.
R-410A refrigerant systems operate at higher pressures
than standard R-22 systems. Do not use R-22 service
equipment or components on R-410A refrigerant
equipment.
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in death, serious
personal injury and/or property damage.
Disconnect gas piping from unit when pressure testing at
pressure greater than 0.5 psig (3450 Pa). Pressures greater
than 0.5 psig will cause gas valve damage resulting in
hazardous condition. If gas valve is subjected to pressure
greater than 0.5 psig, it must be replaced before use. When
pressure testing field-supplied gas piping at pressures of
0.5 psig or less, a unit connected to such piping must be
isolated by closing the manual gas valve(s).
WARNING
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in death, serious
personal injury and/or property damage.
Never use non-certified refrigerants in this product. Non-
certified refrigerants could contain contaminates that could
lead to unsafe operating conditions. Use ONLY refrigerants
that conform to AHRI Standard 700.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in reduced unit
performance or unit shutdown.
High velocity water from a pressure washer, garden hose,
or compressed air should never be used to clean a coil. The
force of the water or air jet will bend the fin edges and
increase airside pressure drop.
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal
injury or death.
Units with convenience outlet circuits can use multiple
disconnects. Check convenience outlet for power status
before opening unit for service. Locate the disconnect
switch and lock it in the open position it.
LOCKOUT/TAGOUT this switch to notify others.
IMPORTANT: Lockout/tag-out is a term used when electri-
cal power switches are physically locked preventing power
to the unit. A placard is placed on the power switch alerting
service personnel that the power is disconnected.
Filter Access Panel
Indoor Coil Access Panel

3
Fig. 2 — Typical Access Panel Locations
(size 16 units)
Fig. 3 — Blower Access Panel Location
(size 8-14 units)
Fig. 4 — Blower Access Panel Location
(size 16 units)
Routine Maintenance
These items should be part of a routine maintenance program, to
be checked every month or two, until a specific schedule for each
can be identified for this installation:
QUARTERLY INSPECTION (AND 30 DAYS AFTER
INITIAL START)
• Return air filter replacement
• Outdoor hood inlet filters cleaned
• Condenser coil cleanliness checked
• Condensate drain checked
SEASONAL MAINTENANCE
These items should be checked at the beginning of each season (or
more often if local conditions and usage patterns dictate):
Air Conditioning
• Ensure outdoor fan motor mounting bolts are tight
• Ensure compressor mounting bolts are tight
• Inspect outdoor fan blade positioning
• Ensure control box is clean
• Check control box wiring condition
• Ensure wire terminals are tight
• Check refrigerant charge level
• Ensure indoor coils are clean
• Check supply blower motor amperage
Heating
• Heat exchanger flue passageways cleanliness
• Gas burner condition
• Gas manifold pressure
• Heating temperature rise
Economizer or Outside Air Damper
• Check inlet filters condition
• Check damper travel (economizer)
• Check gear and dampers for debris and dirt
Air Filters and Screens
Each unit is equipped with return air filters. If the unit has an econ-
omizer, it will also have an outside air screen. If a manual outside
air damper is added, an inlet air screen will also be present.
Each of these filters and screens will need to be periodically re-
placed or cleaned.
Filters
RETURN AIR FILTERS
Return air filters are disposable fiberglass media type. Access
to the filters is through the small lift-out panel located on the
rear side of the unit, above the evaporator/return air access
panel. (See Fig. 5.)
Filter Access Panel
Indoor Coil Access Panel
Control Box
Access Panel
Indoor
Access
Panel
Flue
Hood
Control Box
Access Panel
Blower
Access Panels
CAUTION
EQUIPMENT DAMAGE HAZARD
Failure to follow this CAUTION can result in premature
wear and damage to equipment.
DO NOT OPERATE THE UNIT WITHOUT THE
RETURN AIR FILTERS IN PLACE.
Dirt and debris can collect on heat exchangers and coils
possibly resulting in a small fire. Dirt buildup on
components can cause excessive current used resulting in
motor failure.

4
To remove the filters:
1. Grasp the bottom flange of the upper panel.
2. Lift up and swing the bottom out until the panel disen-
gages and pulls out.
3. Reach inside and extract the filters from the filter rack.
4. Replace these filters as required with similar replacement
filters of same size.
To re-install the access panel:
1. Slide the top of the panel up under the unit top panel.
2. Slide the bottom into the side channels.
3. Push the bottom flange down until it contacts the top of
the lower panel (or economizer top).
OUTSIDE AIR HOOD
Outside air hood inlet screens are permanent aluminum-mesh
type filters. Check these for cleanliness. Remove the screens
when cleaning is required. Clean by washing with hot low-pres-
sure water and soft detergent and replace all screens before re-
starting the unit. Observe the flow direction arrows on the side of
each filter frame.
ECONOMIZER INLET AIR SCREEN
This air screen is retained by filter clips under the top edge of the
hood. (See Fig. 5.)
Fig. 5 — Filter Installation
To remove the filter, open the filter clips. Re-install the filter by
placing the frame in its track, then closing the filter clips.
MANUAL OUTSIDE AIR HOOD SCREEN
This inlet screen is secured by a retainer angle across the top edge
of the hood. (See Fig. 6.)
Fig. 6 — Screens Installed on Outdoor-Air Hood
To remove the screen, loosen the screws in the top retainer and
slip the retainer up until the filter can be removed. Re-install by
placing the frame in its track, rotating the retainer back down,
and tightening all screws.
SUPPLY FAN (BLOWER) SECTION
Supply Fan (Direct-Drive)
All 582K units have the Axion™ Fan Technology direct drive
vane axial fan system. The fan is driven by an ECM motor with
speed that is user set through the Unit Control Board (UCB).
Speeds are fully configurable from 40% to 100% of motor’s max-
imum speed. (See Fig. 7 and 8.)
Fig. 7 — Direct-Drive Supply Fan Assembly
Fig. 8 — ECM Motor Plug Connectors
Divider
Outside
Air
Hood
Filter
Filter Clip
Cleanable
Aluminum
Filter
Barometric
Relief
Screws
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before performing service or maintenance operations on
unit, LOCKOUT/TAG-OUT the main power switch to unit.
Electrical shock and rotating equipment could cause severe
injury.
Motor
Plug
Fan
Motor
ECM Motor
123
456
789
10 11 12
CTL Signal CommonSerial (R/T)
Safety Relay
Power L1
Power L2
Power L3
10 vdc Source
0-10 vdc signal
Earth Ground
Safety Relay
PWM signal
WHITE
BLACK
YELLOW
BLUE
YEL/GRN
RED
GRAY
RED
PINK
ORANGE
VIOLET

5
EVALUATING MOTOR SPEED
The direct drive ECM blower motor uses a constant speed design.
Motor speed is controlled by a 0-10 vdc signal, where 10 vdc is
equal to motor’s maximum rpm.
SELECTING FAN SPEED
All units come factory set for 9.0 vdc or approximately 90% of the
motor’s maximum speed. Fan speed should be set per job specifi-
cation cfm (cubic feet per minute) and ESP (external static pres-
sure) required and per Fan speed set up label included on the unit’s
high voltage cover. In some cases, the Fan Speed Set Up label may
already include the field setting if unit was previously installed.
Check the box on the lower half of the label to see if the field volt-
age setting was filled in and if so, set fan speed to that voltage.
Otherwise see detailed instructions below.
NOTE: Fan Speed Set-Up is for full load airflow. All 582K*08-16
units have multiple speeds of fan control. Low cool and ventila-
tion will operate at lower fan rpms. This offset is factory set and
controlled by the UCB. If fan speed verification is being done with
a strobe, fan speed should be verified in all unit operation modes.
Units with Electro-mechanical controls
The Fan Speed set up controls are located on the lower section of
the Unit Control Board (UCB). See Fig. 9 for location.
1. Check the job specifications for the cfm (cubic feet per
minute) and ESP (external static pressure) required.
2. Using the chart on the Fan Speed Set Up labels (see Fig. 10),
calculate the vdc from the cfm and ESP for the base.
3. If installing any accessories listed at the bottom of the Set
Up Label, add accessory vdc to base unit vdc in upper por-
tion of label.
NOTE: The Fan Speed Set Up labels are located on the High
Voltage cover in the Control Box.
4. Connect a multimeter to the vdc terminals on the UCB.
5. Set the Range Switch to either A, B, or C per the Switch
Range table.
6. Using a straight blade screwdriver turn the vdc control dial
to fine tune the vdc reading.
7. Record the reading in the Field Setting field.
NOTE: For units equipped with the Perfect Humidity™ option,
when replacing the UCB cut JMP 1,2 and 3 in the REHEAT/HP
section of the replacement UCB.
Fig. 9 — UCB Fan Speed Controls - 3-Phase Units
Fan Speed Set Up Controls

6
NOTE(S):
Values in the Field Accessories section are VDC adders.
Fig. 10 — Example of Fan Speed Set Up Labels for Electro-Mechanical Controls
Factory Setting:
9.0 VDC
Field Setting:
V
Switch Range:
A
B
C
B
AC
Field Accessories:
ESP in. wg
VDC Calculator
CFM
0.2
5.6
6.0
6.4
6.8
7.2
7.6
8.0
8.5
8.9
3000
3250
3500
3750
4000
4250
4500
4750
5000
0.4
0.4
6.1
6.4
6.8
7.2
7.6
8.0
8.4
8.8
9.2
0.4
0.6
6.5
6.8
7.2
7.5
7.9
8.3
8.7
9.1
0.4
0.8
6.9
7.2
7.6
7.9
8.2
8.6
9.0
0.4
1.0
7.3
7.6
7.9
8.2
8.6
0.4
1.2
7.6
7.9
8.2
8.6
0.4
1.4
8.0
8.3
8.6
0.4
1.6 1.8 2.0
8.3
0.4 0.4 0.4Economizer
UNIT MODEL NUMBER
4.1 - 7.5
6.9 - 8.7
7.7 - 10.0
8.6
8.9
8.9
9.28.9
9.2
9.6
9.5
9.2
9.5
8.6
8.9
9.2
9.5
8.9
9.2
9.5
9.7
9.8
9.8
9.8
8.9
9.3
9.6 9.9
9.3
9.79.4 10.0
Record field setting here
*
* Overlap in A, B, C switch range
designed for maximum field
adjustment potential. For example
7.2 can be set at either A or B.

7
TROUBLESHOOTING THE ECM MOTOR
Axion™ Fan Technology motors are designed with several built-
in protections included in the motor software. If the motor detects
a fault it will safely shut down. See Table 5, “Supply Fan Motor
Logic and Safety Relays” on page 36 for a complete list.
Troubleshooting the motor requires a voltmeter.
1. Disconnect main power to the unit.
2. Disconnect motor plug in supply section of the unit.
3. Restore main unit power.
4. Check for proper line voltage at motor power leads Black
(PL1-3), Yellow (PL1-6), and Blue (PL1-9).
5. Disconnect main power.
6. Reconnect motor plug in supply section of unit.
7. Restore main power.
8. Check for proper motor control voltage signal of 9.7 vdc to
10.3 vdc at IFM-1 and IFM-3 on Unit Control Board
(UCB). See Fig. 11.
9. Using a jumper wire from unit control terminals R to G,
engage motor operation.
10. Verify control signal from user speed selection switch by
placing voltmeter taps in provided terminals marked vdc.
Signal should be between 3.8 vdc and 10.3 vdc.
11. If the motor does not start and run, remove the fan assembly
and replace the motor with one having the same part number.
Do not substitute with an alternate design motor as the
voltage/speed programming will not be the same as that on an
original factory motor. Fig. 11 — Supply Fan Control Wiring Diagram
582K Unit Voltage Motor Voltage Min-Max Volts
208/230 230 187-253
460 460 360-506
575 575 517-633
NOTE: 2-PIN LOW SPEED DIP SWITCH POSITIONS ARE FACTORY SET AS SHOWN.
EXCEPTION ON T1 8.5 TON UNITS, THESE ARE SET TO “ON-ON”.

8
Removing the Motor and Fan Assembly
NOTE: Due to press fit design of composite Rotor on Motor, it is
highly recommended that any time a motor is replaced the fan ro-
tor is replaced as well. The rest of the assembly may be reused.
See Fig. 12.
1. Unplug motor harness from control box harness and cut
wire tie at the fan deck.
2. Unplug connectors from stator temperature limit switch.
3. Remove four brackets at front of stator on fan deck.
4. Slide fan assembly forward a couple of inches to clear rear
brackets and lift assembly out.
Fig. 12 — Fan Assembly Removal
2
3
4
1

9
Disassembling Standard/Medium Motor and Fan Assembly
See Fig. 13.
NOTE: Refer to “Model Number Nomenclature” on page 70,
position 13 for specific unit requirements.
1. Remove 4 screws from U-clips in fan casing.
2. Remove casing from assembly.
3. Remove 3 screws connecting rotor to motor flange.
4. Remove rotor from motor.
5. Remove 4 screws connecting motor to stator.
6. Remove stator from motor.
7. If required, remove fan limit switch from stator.
Fig. 13 — Disassembling Standard or Medium Static
Motor and Fan Assembly
Disassembling High Static Motor and Fan Assembly
See Fig. 14.
NOTE: Refer to “Model Number Nomenclature” on page 70,
position 13 for specific unit requirements.
1. Remove 4 screws from U-clips in fan casing.
2. Remove casing from assembly.
3. Remove 3 screws connecting rotor to motor flange.
4. Remove rotor from motor.
5. Remove 6 screws connecting motor to stator.
6. Remove motor from stator.
7. If required, remove fan limit switch from stator.
Fig. 14 — Disassembling High Static Motor and Fan
Assembly

10
Reassembly of Standard/Medium Motor and Fan Assembly
See Fig. 15.
NOTE: Refer to “Model Number Nomenclature” on page 70,
position 13 for specific unit requirements.
1. Place motor on flat surface.
2. If required, reinstall limit switch on stator with two plastic
fastener plugs (P/N: 48TM005675).
3. Line up keying features on stator and motor and set stator
onto motor. Install four 1/4-20 x 1-in. screws
(P/N: AC67AP170) to attach stator to motor. Tighten to
50 in.-lb (5.65 Nm).
4. Set rotor onto motor flange. Install three 1/4-20 x 1-in.
screws (P/N: AC67AP170) to attach rotor to motor.
Tighten to 50 in.-lb (5.65 Nm).
5. Set casing onto stator. Install four #10-16 x 3/4-in. screws
(P/N: AP13AD128) through U-Clips in casing. Tighten to
14 in.-lb (1.58 Nm).
6. Pull motor harness out through guide feature in stator if
not already completed.
Fig. 15 — Standard/Medium Fan System Re-
Assembly
Reassembly of High Static Motor and Fan Assembly
See Fig. 16.
NOTE: Refer to “Model Number Nomenclature” on page 70,
position 13 for specific unit requirements.
1. Place stator on flat surface.
2. If required, reinstall limit switch on stator with two plastic
fastener plugs (P/N: 48TM005675).
3. Line up keying features on stator and motor and set motor
onto stator. Motor wire Harness should align with guide
feature in stator. Install six 1/4-20 x 1-in. screws
(P/N: AC67AP170) to attach stator to motor. Tighten to
30 in.-lb (3.39 Nm).
4. Set rotor onto motor flange. Install three 1/4-20 x 1-in.
screws (P/N: AC67AP170) to attach rotor to motor.
Tighten to 50 in.-lb (5.65 Nm).
5. Set casing onto stator. Install four #10-16 x 3/4-in. screws
(P/N: AP13AD128) through U-Clips in casing. Tighten to
14 in.-lb (1.58 Nm).
6. Pull motor harness out through guide feature in stator if
not already completed.
Fig. 16 — High Static Fan System Re-Assembly