Bryant 581A - Manual

Bryant 581A

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Table of Contents:

  • Page 4 – SHIPPING RAILS; Fig. 2 — Shipping Rail Removal; UNIT SIZE
  • Page 6 – Table 1 — Physical Data
  • Page 7 – Table 2 — Fan Motor and Drive Data — Vertical Supply/Return
  • Page 8 – Table 3 — Fan Motor and Drive Data — Horizontal Supply/Return
  • Page 9 – For vertical supply and return units,; Do not drill in this area damage to basepan may result in water
  • Page 10 – are obtained from field-supplied
  • Page 11 – Trap should be deep enough to offset maximum unit static dif-
  • Page 12 – A. Manual Damper Assembly; Fig. 15 — Field Power Wiring Connections; Equipment; Fig. 16 — Field Control Thermostat Wiring
  • Page 13 – Table 4A — Electrical Data — Units Without Convenience Outlet
  • Page 14 – Table 4B — Electrical Data — Units With Optional Convenience Outlet
  • Page 15 – FILTER; Units with manual damper only use one filter.; Fig. 20 — Manual Damper Details
  • Page 18 – VIII. CONDENSER FANS AND MOTORS; All other rpms require field-supplied drive.; Refer to page 23 for general Fan Performance Data notes.; Maximum continuous bhp is:
  • Page 23 – Refer to this page for general Fan Performance Data notes.; GENERAL NOTES FOR TABLES 5-22; Use of a field-supplied motor may affect wire size. Contact the; Brake Horsepower Input to Fan
  • Page 28 – Table 23 — Power Exhaust Fan Performance
  • Page 30 – Table 27 — Fan Rpm at Motor Pulley Settings*; Outdoor Air Lockout Sensor; B. EconoMi$er IV Controller Wiring and Operational Modes; Outdoor Dry Bulb Changeover; Factory-Installed Option
  • Page 31 – Table 28 — EconoMi$er IV Sensor Usage; WIRE TIES; Fig. 24 — Supply-Air Temperature Sensor Location; Fig. 25 — Outdoor-Air Temperature Changeover
  • Page 33 – APPROXIMATE DRY BULB TEMPERATURE— °F (°C); RANGE CONFIGURA; Fig. 27 — Enthalpy Changeover Set Points
  • Page 37 – NOTE
  • Page 38 – Multifak 2; DO NOT SLIDE FAN DECK OUT; Integrated Gas Controller
  • Page 39 – LEGEND; Fig. 32 — Evaporator-Fan Motor Adjustment
  • Page 40 – Thermostatic Expansion Valve
  • Page 42 – SEE DETAIL “C”; Fig. 39 — Spark Gap Adjustment
  • Page 44 – Fig. 40 — Low Voltage Control Schematic
  • Page 45 – Fig. 41 — Power Schematic
  • Page 48 – Table 35 — Heating Service Analysis; Table 36 — IGC Board LED Alarm Codes
  • Page 49 – Thermostat Fan Switch in the; IDM —; Integrated Gas Unit Controller
  • Page 56 – ELECTRICAL
Loading the manual

Cancels: II 581A-210-1

II 581A-210-2

10/1/05

installation, start-up and
service instructions

SINGLE PACKAGE ROOFTOP
ELEC TRIC COOLING/GAS HEATING UNITS

581A

Dura

Pac Plus Series

Sizes 210-300

18 to 25 Tons

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16

I. Step 1 — Provide Unit Support

. . . . . . . . . . . . . . . . . 1

II. Step 2 — Remove Shipping Rails

. . . . . . . . . . . . . . . 2

III. Step 3 — Rig and Place Unit

. . . . . . . . . . . . . . . . . . . 2

IV. Step 4 — Field Fabricate Ductwork

. . . . . . . . . . . . . 9

V. Step 5 — Make Unit Duct Connections

. . . . . . . . . . 9

VI. Step 6 — Install Flue Hood and Inlet Hood

. . . . . . 10

VII. Step 7 — Trap Condensate Drain

. . . . . . . . . . . . . . 10

VIII. Step 8 — Install Gas Piping

. . . . . . . . . . . . . . . . . . 10

IX. Step 9 — Make Electrical Connections

. . . . . . . . . 11

X. Step 10 — Install Outdoor-Air Hood

. . . . . . . . . . . . 12

XI. Step 11 — Position Optional Power

Exhaust or Barometric Relief Damper Hood

. . . 16

XII. Step 12 — Non-Fused Disconnect

. . . . . . . . . . . . . 16

XIII. Step 13 — Install All Accessories

. . . . . . . . . . . . . 16

PRE-START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-36

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-46

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 47-51

START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance
functions of cleaning coils and filters and replacing filters.
All other operations should be performed by trained service
personnel. When working on air-conditioning equipment,
observe precautions 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.

IMPORTANT:

Units have high ambient temperature operat-

ing limits. If limits are exceeded, the units will automatically
lock the compressor out of operation. Manual reset will be
required to restart the compressor.

INSTALLATION

I. STEP 1 — PROVIDE UNIT SUPPORT

A. Roof Curb

Assemble or install accessory roof curb in accordance with
instructions shipped with this accessory. See Fig. 1. Install
insulation, cant strips, roofing, and counter flashing as
shown. Ductwork can be installed to roof curb before unit is
set in place. Ductwork must be attached to curb and not to
the unit. Curb must be level. This is necessary to permit unit
drain to function properly. Unit leveling tolerance is ±

1

/

16

in.

per linear ft in any direction. Refer to Accessory Roof Curb
Installation Instructions for additional information as
required. When accessory roof curb is used, unit may be
installed on class A, B, or C roof covering material. Bryant
roof curb accessories are for flat roofs or slab mounting.

WARNING:

Before performing service or mainte-

nance operations on unit, turn off main power switch
to unit. Electrical shock could cause personal injury.

WARNING:

1. Improper installation, adjustment, alteration,

service, or maintenance can cause property
damage, personal injury, or loss of life. Refer to
the User’s Information Manual provided with
this unit for more details.

2. Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any
other appliance.

What to do if you smell gas:

1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switch, or use any

phone in your building.

3. IMMEDIATELY call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s
instructions.

4. If you cannot reach your gas supplier, call the

fire department.

WARNING:

Disconnect gas piping from unit when

pressure testing at pressure greater than 0.5 psig.
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 clos-
ing the manual gas valve(s).

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Summary

Page 4 - SHIPPING RAILS; Fig. 2 — Shipping Rail Removal; UNIT SIZE

— 4 — SHIPPING RAILS Fig. 2 — Shipping Rail Removal Fig. 3 — Rigging Details UNIT SIZE 581A MAX WEIGHT (lb) CENTER OF GRAVITY (in.) X Y Z 210 3358 63.9 34.0 30.5 240 3380 63.9 34.5 30.5 300 3769 67.8 35.0 35.0

Page 6 - Table 1 — Physical Data

— 6 — Table 1 — Physical Data LEGEND *Aluminum evaporator coil and aluminum condenser coil. UNIT 581A 210 240 300 NOMINAL CAPACITY (tons) 18 20 25 OPERATING WEIGHT (lb) Al/Al* 2224 2272 2526 COMPRESSOR Quantity 3 3 2 Number of Refrigerant Circuits 3 3 2 Oil (ounces) Ckt A...Ckt B...Ckt C 68...68...9...

Page 7 - Table 2 — Fan Motor and Drive Data — Vertical Supply/Return

— 7 — Table 2 — Fan Motor and Drive Data — Vertical Supply/Return LEGEND 581A 210 240 300 208/230 and 460 v 575 v 208/230 and 460 v 575 v 208/230 and 460 v 575 v LOW RANGE Motor Hp 3.7 3 5 5 7.5 7.5 Motor Nominal Rpm 1725 1725 1745 1745 1745 1745 Maximum Continuous Bhp 4.25 3.45 5.75 5.75 8.63 8.63 ...

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