
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53581014-01 Printed in U.S.A. Form II581J-14-04 Pg 1 7-19 Replaces: II581J-14-03
Installation Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . . . . . . . 3
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Jobsite Survey . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 1 — Plan for Unit Location . . . . . . . . . . . . . . . . . . . . . 6
• ROOF MOUNT
Step 2 — Plan for Sequence of Unit Installation . . . . . . . . 6
• CURB-MOUNTED INSTALLATION
• PAD-MOUNTED INSTALLATION
• FRAME-MOUNTED INSTALLATION
Step 3 — Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 — Provide Unit Support . . . . . . . . . . . . . . . . . . . . . . 7
• ROOF CURB MOUNT
• SLAB MOUNT (HORIZONTAL UNITS ONLY)
• ALTERNATE UNIT SUPPORT (IN LIEU OF CURB OR
SLAB MOUNT)
Step 5 — Field Fabricate Ductwork. . . . . . . . . . . . . . . . . . . 9
Step 6 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . . . . . . . 9
• POSITIONING ON CURB
Step 7 — Convert to Horizontal and Connect Ductwork
(When Required). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 8 — Install Outside Air Hood . . . . . . . . . . . . . . . . . . 11
• ECONOMIZER HOOD REMOVAL AND SETUP — FAC-
TORY OPTION
• TWO POSITION DAMPER HOOD REMOVAL AND
SETUP — FACTORY OPTION
• ECONOMIZER HOOD AND TWO-POSITION HOOD
Step 9 — Install Flue Hood. . . . . . . . . . . . . . . . . . . . . . . . . 13
Step 10 — Install Gas Piping . . . . . . . . . . . . . . . . . . . . . . . 13
• FACTORY OPTION THRU-BASE CONNECTIONS
(GAS CONNECTION)
Step 11 — Install External Condensate Trap and
Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Step 12 — Make Electrical Connections . . . . . . . . . . . . . . 16
• FIELD POWER SUPPLY
• ALL UNITS
• UNITS WITHOUT FACTORY-INSTALLED NON-
FUSED DISCONNECT OR HACR CIRCUIT BREAKER
• UNITS WITH FACTORY-INSTALLED NON-FUSED
DISCONNECT
• CONVENIENCE OUTLETS
• FACTORY OPTION THRU-BASE CONNECTIONS
(ELECTRICAL CONNECTIONS)
• UNITS WITHOUT THRU-BASE CONNECTIONS
• FIELD CONTROL WIRING
• THERMOSTAT
• UNIT WITHOUT THRU-BASE CONNECTION KIT
Perfect Humidity™ System Control Connections . . . . . . 22
• PERFECT HUMIDITY — SPACE RH CONTROLLER
• HEAT ANTICIPATOR SETTINGS
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
EconoMi$er® X (Factory Option). . . . . . . . . . . . . . . . . . . 27
• SYSTEM COMPONENTS
• SPECIFICATIONS
•INPUTS
•OUTPUTS
• ENVIRONMENTAL
• ECONOMIZER MODULE WIRING DETAILS
• INTERFACE OVERVIEW
• SETUP AND CONFIGURATION
• ENTHALPY SETTINGS
• TWO-SPEED FAN OPERATION
• CHECKOUT
• TROUBLESHOOTING
Low Ambient Control (Factory Option) . . . . . . . . . . . . . . 40
2-Speed Indoor Fan Motor System with Variable Frequen-
cy Drive (Factory Option) . . . . . . . . . . . . . . . . . . . . . . . 40
RTU Open Control System . . . . . . . . . . . . . . . . . . . . . . . . 40
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
• ADDITIONAL APPLICATION DATA
Step 13 — Adjust Factory-Installed Options . . . . . . . . . . 41
• SMOKE DETECTORS
• ECONOMI$ER IV OCCUPANCY SWITCH
Step 14 — Install Accessories. . . . . . . . . . . . . . . . . . . . . . . 41
Step 15 — Check Belt Tension . . . . . . . . . . . . . . . . . . . . . . 41
• BELT FORCE — DEFLECTION METHOD
• BELT TENSION METHOD
Pre-Start and Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . CL-1
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, re-
pair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions
of cleaning coils and filters and replacing filters. All other op-
erations should be performed by trained service personnel.
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, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguisher available for all brazing operations.
It is important to recognize safety information. This is the safe-
ty-alert symbol . When you see this symbol on the unit and
in instructions or manuals, be alert to the potential for personal
injury.
581J units for installation in the United States contain use of Bryant’s 2-speed indoor fan control system. This complies with
the U.S. Department of Energy (DOE) efficiency standard of 2018.
581J units for installation outside the United States may or may not contain use of the 2-speed indoor fan control system as
they are not required to comply with the U.S. Department of Energy (DOE) efficiency standard of 2018.
For specific details on operation of the Bryant 2-speed indoor fan system, refer to the Variable Frequency Drive (VFD)
Factory-Installed Option 2-Speed Fan Motor Control Installation, Setup, and Troubleshooting manual.
Preferred™ Series
581J*14
Single Package Rooftop Gas Heat/Electric Cooling Unit
with Puron®(R-410A) Refrigerant