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704A
SINGLE- -PACKAGED AIR CONDITIONER
WITH R- -22 REFRIGERANT
2- -5 NOMINAL TONS (SIZES 024- -060) 1 & 3 PHASE
NOTE: Read the entire instruction manual before starting the
installation.
NOTE: Installer: Make sure the Owner's Manual and Service
Instructions are left with the unit after installation.
TABLE OF CONTENTS
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Installation Instructions
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Installation and servicing of this equipment can be hazardous due to
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mechanical and electrical components. Only trained and qualified
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personnel should install, repair, or service this equipment.
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Untrained personnel can perform basic maintenance functions such
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as cleaning and replacing air filters. All other operations must be
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performed by trained service personnel. When working on this
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equipment, observe precautions in the literature, on tags, and on
labels attached to or shipped with the unit and other safety
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precautions that may apply.
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Follow all safety codes. Installation must be in compliance with
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local and national building codes. Wear safety glasses, protective
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clothing, and work gloves. Have fire extinguisher available. Read
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these instructions thoroughly and follow all warnings or cautions
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included in literature and attached to the unit.
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Recognize safety information. This is the safety- -alert symbol
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When you see this symbol on the unit and in instructions or manuals,
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be alert to the potential for personal injury. Understand these signal
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words: DANGER, WARNING, and CAUTION. These words are
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used with the safety- -alert symbol. DANGER identifies the most se-
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rious hazards which will result in severe personal injury or death.
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WARNING signifies hazards which could result in personal injury
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or death. CAUTION is used to identify unsafe practices which may
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result in minor personal injury or product and property damage.
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NOTE is used to highlight suggestions which will result in en-
hanced installation, reliability, or operation.
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Fig. 1 - - Unit 704A
SAFETY CONSIDERATIONS
C99062
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Table of Contents
Related Manuals for Bryant 704A
Summary of Contents for Bryant 704A
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Page 1: Table Of Contents
Use of Rigging Bracket ......Fig. 1 - - Unit 704A Connect Condensate Drain . -
Page 2: Introduction
Slab- -mounted units should be at least 4 in. above the highest expected water and runoff The 704A packaged air conditioner is fully self- -contained and levels. Do not use unit if it has been under water. - Page 3 REQUIRED CLEARANCE TO COMBUSTIBLE MATL. REQUIRED CLEARANCE FOR OPERATION AND SERVICING INCHES [mm] (R efer to M aximum O perating C learances ) EVAP. COIL ACCESS SIDE............36.00 [914.0] INCHES [mm] POWER ENTRY SIDE..............42.00 [1066.8] TOP OF UNIT...................14.00 [355.6] (EXCEPT FOR NEC REQUIREMENTS) DUCT SIDE OF UNIT.................2.00 [50.8] UNIT TOP ..................48.00 [1219.2] SIDE OPPOSITE DUCTS ..............14.00 [355.6]...
- Page 4 REQUIRED CLEARANCE TO COMBUSTIBLE MATL. REQUIRED CLEARANCE FOR OPERATION AND SERVICING INCHES [mm] (R efer to M aximum O perating C learances ) EVAP. COIL ACCESS SIDE............36.00 [914.0] INCHES [mm] POWER ENTRY SIDE..............42.00 [1066.8] TOP OF UNIT...................14.00 [355.6] (EXCEPT FOR NEC REQUIREMENTS) DUCT SIDE OF UNIT.................2.00 [50.8] UNIT TOP ..................48.00 [1219.2] SIDE OPPOSITE DUCTS ..............14.00 [355.6]...
- Page 5 HVAC unit HVAC unit base base Gask eting inner flange* Scre w Scre w Gask eting (NO TE A) (NO TE A) inner flange* *Gask eting *Gask eting outer flange outer flange Wood nailer* Wood nailer* Flashing field Flashing field supplied supplied Roof curb*...
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Page 6: Installation
Corner Weight 3 Corner Weight 4 Corner Weight 4 Rigging Weight Rigging Weight Fig. 5 - - 704A Unit Corner Weights (in Pounds) and Suggested Rigging WARNING UNIT FALLING HAZARD Failure to follow this warning could result in personal injury or death. -
Page 7: Connect Condensate Drain
-isolate duct openings in wall or roof according to good construction practices. Model 704A disposes of condensate water through a 3/4 in. NPT CONFIGURING UNITS FOR DOWNFLOW (VERTICAL) fitting which exits through the base on the evaporator coil access DISCHARGE side. -
Page 8: Install Electrical Connections
2. Remove return duct cover located on duct panel by breaking four (4) connecting tabs with screwdriver and a hammer (See Fig. 9 & 10). 3. To remove supply duct cover, break front and right side connecting tabs with a screwdriver and a hammer. Push louver down to break rear and left side tabs (See Fig. -
Page 9: High- -Voltage Connections
SPECIAL PROCEDURES FOR 208- -V OPERATION CAUTION WARNING UNIT COMPONENT DAMAGE HAZARD ELECTRICAL SHOCK HAZARD Failure to follow this caution may result in damage to the unit being installed. Failure to follow this warning could result in personal injury or death. 1. -
Page 10: Pre- -Start- -Up
Table 1—Physical Data- -Unit 704A UNIT SIZE NOMINAL CAPACITY (ton) 2--1/2 3--1/2 OPERATING WEIGHT (lb.) COMPRESSOR Scroll REFRIGERANT (R- -22) Quantity (lb.) 10.7 10.8 12.1 11.8 ® REFRIGERANT METERING DEVICE AccuRater ORIFICE OD (in.) 0.065 0.070 0.080 0.088 0.088 0.101 OUTDOOR COIL 2…21... -
Page 11: Start- -Up
START- -UP An accurate superheat, thermocouple- - or thermistor- -type thermometer, and a gauge manifold are required when using the CHECK FOR REFRIGERANT LEAKS superheat charging method for evaluating the unit charge. Do not Proceed as follows to locate and repair a refrigerant leak and to use mercury or small dial- -type thermometers because they are not charge the unit: adequate for this type of measurement. - Page 12 Table 3—Wet Coil Air Delivery* — Horizontal Discharge (Deduct 10% for 208- -Volt Operation) 230 VOLT HORIZONTAL DISCHARGE EXTERNAL STATIC PRESSURE (IN. WC) UNIT MOTOR SIZE SPEED DELIVERY Watts — — — — — — — — — — Watts —...
- Page 13 A05112 Fig. 13 - - Wiring Diagram 208/230- -1- -60...
- Page 14 A06307 Fig. 14 - - Wiring Diagram 208/230- -3- -60...
- Page 15 A06485 Fig. 15 - - Wiring Diagram 460- -3- -60...
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Page 16: Cooling Sequence Of Operation
G) across the 24- -v secondary of transformer (TRAN). All 704A units are factory wired for low speed, except sizes 030 and The normally open contacts of energized contactor (C) close and 048 which are wired for medium speed. -
Page 17: Air Filter
NOTE TO EQUIPMENT OWNER: Consult your local dealer NOTE: All motors are pre- -lubricated. Do not attempt to lubricate about the availability of a maintenance contract. these motors. WARNING For longer life, operating economy, and continuing efficiency, clean accumulated dirt and grease from the blower wheel and motor annually. -
Page 18: Outdoor Fan
inner condenser coil, be sure to clean between the coils. Be sure to cycle to ensure proper operation. If discrepancies are observed in flush all dirt and debris from the unit base. operating cycle, or if a suspected malfunction has occurred, check each electrical component... - Page 19 Table 5—Troubleshooting Chart SYMPTOM CAUSE REMEDY Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, control relay, or high-- Replace component pressure, loss--of--charge or low--pressure switch Compressor and outdoor fan will not start Insufficient line voltage Determine cause and correct...
- Page 20 *Measured at suction inlet to compressor †Measured at liquid line leaving condenser. Catalog No. II704A ---24---5 E2007 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 01/07 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.