Bryant 581C024-060, 581B036-072 User Manual

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Page 1

581B036--072 581C024--060

SINGLE--PACKAGE ROOFTOP HEA TING/COOL ING ST ANDARD AND LOW NOx UNITS

Installation Instructions

TABLE OF CONTENTS

Page

SAFETY CONSIDERATIONS 1........................

INSTALLATION 1..................................

Step 1--Provide Unit Support 2.......................

ROOF CURB 2................................

SLAB MOUNT 2..............................

ALTERNATE UNIT SUPPORT 2.................

Step 2--Field Fabricate Ductwork 2...................

Step 3--Install External Trap for Condensate Drain 2.......

Step 4--Rig and Place Unit 2.........................

POSITIONING 2..............................

Step5—InstallFlueHood 4........................

Step 6 — Install Gas Piping 4........................

Step 7 — Make Electrical Connections 8................

FIELD POWER SUPPLY 8......................

FIELD CONTROL WIRING 8....................

HEAT ANTICIPATOR SETTINGS 8...............

Step 8 — Adjust Factory-Installed Options 16...........

PERFECT HUMIDITY ADAPTIVE

DEHUMIDIFICATION SYSTEM 16..............

MANUAL OUTDOOR-AIR DAMPER 16..........

CONVENIENCE OUTLET 16....................

OPTIONAL ECONOMI$ER IV 18................

ECONOMI$ER IV STANDARD SENSORS 19......

ECONOMI$ER IV CONTROL MODES 20.........

Step 9 — Adjust Evaporator-Fan Speed 25..............

PRE--START--UP 41..................................

START--UP 41.......................................

SERVICE 45........................................

TROUBLESHOOTING 55.............................

START--UP CHECKLIST 60...........................

SAFETY CONSIDERA T IONS

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 perform 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.

Recognize safety information. This is the safety--alert symbol

. When you see this symbol on the unit and in instructions or

manuals, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and

CAUTION. These words are used with the safety--alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on unit, turn off main power switch to unit and install lockout tag. Ensure electrical service to rooftop unit agrees with voltage and amperage listed on the unit rating plate.

FIRE, EXPLOSION HAZARD

Failure to follow this warning could cause death and/or property damage.

Disconnect gas piping from unit when leak testing at pressure greater than psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater

than

/2psig, it must be replaced before use. When

pressure testing field-supplied gas piping at pressures of

/2psig or less, a unit connected to such piping must be

isolated by manually closing the gas valve(s).

WARNING

/2psig. Pressures greater than1/

INSTALLATION

Unit is shipped in the vertical discharge configuration. To convert to horizontal discharge application, remove duct opening covers. Using the same screws, install covers on duct openings in basepan of unit with insulation-side down. Seals around openings must be tight. (See Fig. 1.)

Page 2

Fig. 1 --- Horizontal Conversion Panels

Step 1 —Provide Unit Support

581B,C

Roof Curb

Assemble and install accessory roof curb in accordance with instructions shipped with curb. (See Fig. 2.) Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb, not to the unit. If electric control power or gas service is to be routed through the basepan, attach the accessory thru-the-bottom service connections to the basepan in accordance with the accessory installation instructions. Connections must be installed before unit is set on roof curb.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 2. Improperly applied gasket can result in air leaks and poor unit performance.

Curb should be level. Unit leveling tolerances are shown in Fig.

3. This is necessary for unit drain to function properly. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

Slab Mount (Horizontal Units

Provide a level concrete slab that extends a minimum of 6 in. beyond unit cabinet. Install a gravel apron in front of condenser-coil air inlet to prevent grass and foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb if required.

Alternate Unit

When the curb or adapter cannot be used, support unit with sleeper rails using unit curb or adapter support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 3 equally spaced 4-in. x 4-in. pads on each side.

Support

Only)

Step 2 —Field Fabricate Ductwork

Secure all ducts to roof curb and building structure on vertical discharge units. Do not connect ductwork to unit. For horizontal applications, field-supplied isolation flanges should be attached to horizontal discharge openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.

Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.

C06108

A minimum clearance is not required around ductwork. Cabinet return-air static pressure (a negative condition) shall not exceed

0.35 in. wg with economizer or 0.45 in. wg without economizer. These units are designed for a minimum continuous return-air

temperature in heating of 50_F (dry bulb), or an intermittent operation down to 45_F (dry bulb), such as when used with a night setback thermostat.

To operate at lower return-air temperatures, a field-supplied outdoor air temperature control must be used to initiate both stages of heat when the temperature is below 45_F. Indoor comfort may be compromised when these lower air temperatures are used with insufficient heating temperature rise.

Step 3 —Install External Trap for Condensate Drain

The unit’s3/4-in. condensate drain connections are located on the bottom and side of the unit. Unit discharge connections do not determine the use of drain connections; either drain connection can be used with vertical or horizontal applications.

When using the standard side drain connection, ensure the plug (Red) in the alternate bottom connection is tight before installing the unit.

To use the bottom drain connection for a roof curb installation, relocate the factory-installed plug (Red) from the bottom connection to the side connection. The center drain plug looks like a star connection, however it can be removed with a socket drive extension. (See Fig. 4.) The piping for the condensate drain and external trap can be completed after the unit is in place.

All units must have an external trap for condensate drainage. Install a trap 4-in. deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1 in. per 10 ft of run. Do not use a pipe size smaller than the unit connection (

/4in.). (See Fig. 5.)

/2-in.

Step 4 —Rig and Place Unit

Inspect unit for transportation damage, and file any claim with transportation agency. Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit, and rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and 2 and Fig. 6 for additional information. Operating weight is shown in Table 1 and 2 and Fig. 6.

Lifting holes are provided in base rails as shown in Fig. 8 and 9. Refer to rigging instructions on unit.

PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal injury, death and property damage.

All panels must be in place when rigging and lifting.

Positioning

Maintain clearance around and above unit to provide minimum distance from combustible materials, proper airflow, and service access. (See Fig. 7, 8 and 9.)

Position unit on roof curb so that the following clearances are maintained: rail inside the front and rear, 0.0 in. clearance between the roof curb and the base rail inside on the duct end of the unit. This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximately equal to Fig. 2, section C-C.

Do not install unit in an indoor location. Do not locate unit air inlets near exhaust vents or other sources of contaminated air.

WARNING

/4in. clearance between the roof curb and the base

Page 3

1-4 [406]

DALT

DRAIN

HOLE

13/4

[44.5]

GAS POWER CONTROL

/4

[19] NPT

/2

[12.7] NPT

/4

[19] NPT

CONNECTOR

PKG. ACCY.

CRBTMPWR001A01 CRBTMPWR002A01 1

CRBTMPWR003A01

1-9

[551]

/16

CRBTMPWR004A01

/4 [19] NPT

/4 [31.7]

/4 [19] NPT

/4 [31.7]

/2

[12.7]

ACCESSORY

POWER

/2

[12.7]

ROOF CURB

ACCESSORY

CRRFCURB001A01

CRRFCURB002A01

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct rest on curb).

6. Service clearance: 4 ft on each side.

1-2 [356]

2-0 [610]

581B036-072 581C024-060

UNIT SIZE

7. Direction of airflow.

8. Connector packages CRBTMPWR001A01 and 002A01 are for thru-the-curb type gas. Packages CRBTMPWR003A01 and 004A01 are for thru-the-bottom type gas connections.

581B,C

Fig. 2 --- Roof Curb Details

C06345

Page 4

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B B-C A-C

0.5 1.0 1.0

Fig. 3 --- Unit Leveling Tolerances

Be sure that unit is installed such that snow will not block the combustion intake or flue outlet.

581B,C

Unit may be installed directly on wood flooring or on Class A, B, or C roof-covering material when roof curb is used.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

Locate mechanical draft system flue assembly at least 48 in. from an adjacent building or combustible material. When unit is located adjacent to public walkways, flue assembly must be at least 7 ft above grade.

NOTE: When unit is equipped with an accessory flue discharge deflector, allowable clearance is 18 inches.

Flue gas can deteriorate building materials. Orient unit such that flue gas will not affect building materials.

Adequate combustion-air space must be provided for proper operation of this equipment. Be sure that installation complies with all local codes and Section 5.3, Air for Combustion and Ventilation, NFGC (National Fuel Gas Code), ANSI (American National Standards Institute) Z223.1-1984 and addendum Z223.1a-1987. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.

Flue vent discharge must have a minimum horizontal clearance of 4 ft from electric and gas meters, gas regulators, and gas relief equipment.

After unit is in position, remove shipping materials and rigging skids.

Step 5 —Install Flue Hood

Flue hood is shipped screwed to the burner compartment access panel. Remove from shipping location and, using screws provided, install flue hood in location shown in Fig. 8 and 9.

For units being installed in California Air Quality Management Districts which require NOx emissions of 40 nanograms/joule or less, a low NOx unit must be installed.

NOTE: Low NOx units are available for 2 to 5 ton units.

C06110

CONDENSATE PAN (SIDE VIEW)

HORIZONTAL DRAIN OUTLET

NOTE: Drain plug is shown in factory-installed position.

DRAIN PLUG

C06003

Fig. 4 --- Condensate Drain Pan

NOTE: Trap should be deep enough to offset maximum unit static difference. A 4-in. trap is recommended.

C06004

Fig. 5 --- Condensate Drain Piping Details

Step 6 —Install Gas Piping

Unit is equipped for use with type of gas shown on nameplate. Refer to local building codes, or in the absence of local codes, to ANSI Z223.1-1984 and addendum Z223.1A-1987 entitled National Fuel Gas Code. In Canada, installation must be in accordance with the CAN1.B149.1 and CAN1.B149.2 installation codes for gas burning appliances.

For natural gas applications, gas pressure at unit gas connection must not be less than 4 in. wg or greater than 13 in. wg while the unit is operating. On 581B036 --072 and 581C036--060 high-heat units, the gas pressure at unit gas connection must not be less than 5 in. wg or greater than 13 in. wg while the unit is operating. For propane applications, the gas pressure must not be less than 5 in. wg or greater than 13 in. wg at the unit connection.

Size gas supply piping for 0.5 in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection.

Page 5

NOTES:

OPERATING

1. Place unit on curb as close as possible to the duct end.

2. Dimensionin( )isinmillimeters.

3. Hook rigging shackles through holes in base rail as shown in detail “A.” Holes in base rails are centered around the unit center of gravity. Use wooden top skid when rigging to prevent rigging straps from damaging unit.

4. Weights include base unit without economizer. See Table 1 for unit operating weights with accessory economizer.

5. Weights include base unit without the Perfect Humidityt adaptive dehumidification system. See Table 1 for unit operating weights with th e Perfect Humidityt system.

C06111

Fig. 6 --- Rigging Details

UNIT

581C

024 036 540 245 73.69 1872 35.50 902 33.31 847 048 560 254 73.69 1872 35.50 902 33.31 847 060 635 288 73.69 1872 35.50 902 41.31 1050

UNIT 581

036 530 240 73.69 1872 35.50 902 33.31 847 048 540 245 73.69 1872 35.50 902 33.31 847 060 560 254 73.69 1872 35.50 902 33.31 847 072 635 288 73.69 1872 35.50 902 41.31 1050

OPERATING

WEIGHT

lb kg in. mm in. mm in. mm

530 240

OPERATING

WEIGHT

lb kg in. mm in. mm in. mm

“A” “B” “C”

73.69 1872 35.50 902 33.31 847

“A” “B” “C”

DIMENSIONS

581B,C

C06208

Fig. 7 --- Roof Curb Alignment

Support gas piping as shown in the table in Fig. 11. For example,

/4-in. gas pipe must have one field-fabricated support beam

a every 8 ft. Therefore, an 18-ft long gas pipe would have a minimum of 3 support beams, and a 48-ft long pipe would have a minimum of 6 support beams.

WARNING

PROPERTY DAMAGE HAZARD

Failure to follow this warning could result in personal injury, death and property damage.

All panels must be in place when rigging and lifting.

See Fig. 11 for typical pipe guide and locations of external manual gas shutoff valve.

NOTE: If accessory thru-the-bottom connections and roof curb are used, refer to the Thru-the-Bottom Accessory Installation Instructions for information on power wiring and gas connection piping. The power wiring, control wiring and gas piping can be routed through field-drilled holes in the basepan. The basepan is specially designed and dimpled for drilling the access connection holes.

WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage.

When connecting the gas line to the unit gas valve, the installer MUST use a backup wrench to prevent damage to the valve.

Page 6

581B,C

C06363

COMPRESSOR

ACCESS PANEL

CONTROL BOX

Fig. 8 --- 581B 036 --072 Base Unit Dimensions

Page 7

C06364

581B,C

COMPRESSOR

ACCESS PANEL

Fig. 9 --- 581C 024 --060 Base Unit Dimensions

Page 8

Fig. 10 --- Flue Hood Details

581B,C

LEGEND

NFGC — National Fuel Gas Code

Field supplied.

NOTE: Follow all local codes.

SPACING OF SUPPORTS

STEEL PIPE

NOMINAL DIAMETER (in.)

/4or 1

/4or larger

Fig. 11 --- Gas Piping Guide (With Accessory

Thru--the--Curb Service Connections)

Step 7 —Make Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI/NFPA (National Fire Protection Association), latest edition, and local electrical codes. Do not use gas piping as an electrical

ground.

WARNING

SPACING OF SUPPORTS

X DIMENSION (ft)

6 8

C06114

C06115

Field Power Supply

All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is to be connected to a 208-v power supply, the transformer must be rewired by moving the black wire from the 230-v terminal on the transformer and connecting it to the 200-v terminal from the transformer.

Refer to unit label diagram for additional information. Pigtails are provided for field service. Use factory-supplied splices or UL (Underwriters’ Laboratories) approved copper connector.

When installing units, provide a disconnect per NEC. All field wiring must comply with NEC and local

requirements. Install conduit through side panel openings indicated in Fig. 8.

Route power lines through connector to terminal connections as shown in Fig. 12.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (also see Tables 3 and

4). On 3-phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in Tables 3 and 4, Note 3 to determine the percent voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation would invalidate any applicable Bryant warranty.

Field Control W

iring

Install a Bryant-approved accessory thermostat assembly according to installation instructions included with the accessory. Locate thermostat assembly on a solid wall in the conditioned space to sense average temperature in accordance with thermostat installation instructions.

Route thermostat cable or equivalent single leads of colored wire from subbase terminals through connector on unit to low-voltage connections (shown in Fig. 13 and 14).

Connect thermostat wires to matching screw terminals of low-voltage connection board. (See Fig. 13 and 14.)

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American Wire Gauge) insulated wire (35_Cminimum).For50to75ft,use no. 16 AWG insulated wire (35_C minimum). For over 75 ft, use no. 14 AWG insulated wire (35_C minimum). All wire larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.

Pass the control wires through the hole provided in the corner post; then feed wires through the raceway built into the corner post to the 24-v barrier located on the left side of the control box. (See Fig. 15). The raceway provides the UL required clearance between high and low-voltage wiring.

Heat Anticipator

Settings

Set heat anticipator settings at 0.14 amp for first stage and 0.14 for second stage heating, when available.

Page 9

Table 1—Physical Data 581B

/B(

)

MotorPulleyPitchDiameterA/B(i

n.)

SpeedChangeperFullTurno

MovablePulleyMaximumFul

BASE UNIT 581B 036 048 060 072 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb)

Unit Perfect Humidity Adaptive Dehumidification System EconoMi$er IV Roof Curb

COMPRESSOR

Quantity Oil (oz)

REFRIGERANT TYPE

Expansion Device Operating Charge (lb-oz)

Standard Unit Unit With Perfect Humidity Adaptive Dehumidification System

CONDENSER FAN

Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total)

CONDENSER COIL

Rows...Fins/in. Tot a l F ace A r ea (sq f t )

EVAPORATOR COIL

Standard Unit

Rows...Fins/in. Tot a l F ace A r ea (sq f t )

Unit with Perfect Humidity Adaptive Dehumidification System

Rows...Fins/in. Tot a l F ace A r ea (sq f t )

EVAPORATOR FAN

Quantity...Size (in.) Nominal Cfm Maximum Continuous Bhp Std

Hi-Static

Motor RPM Std

Hi-Static

Motor Frame Size Std

Hi-Static

Fan Rpm Range Std

Hi-Static

Motor Bearing Type Maximum Fan Rpm Motor PulleyPitch Diameter

in.

Hi-Static

Nominal Motor Shaft Diameter (in.) Std

Hi-Static

Fan Pulley Pitch Diameter (in.) Std

Hi-Static

Belt — Type...Length (in.) Std

Hi-Static

Pulley Center Line Distance (in.) Speed Changeper Full Turn o

Movable Pulley Flange (rpm)

Movable PulleyMaximum Full

Turns from Closed Position

Hi-Static

Factory Setting — Full Turns Open Std

Hi-Static

Factory Speed Setting (rpm) Std

Hi-Static

Fan Shaft Diameter at Pulley (in.)

LEGEND

Bhp — Brake Horsepower

Std

3 4 5 6

530 540 560 635

15 23 25 29 50 50 50 50

115 115 115 115

Scroll

1 1 1 1

42 53 50 60

R-22

Acutrol Metering Device

5-8 10-2 10-0 12- 8

12-5 18-8 20-5 23-14

Propeller

1...22 1...22 1...22 1...22 3500 3500 4100 4100

/4...825

/4...1100

180 180 320 320

3/8---in. OD Enhanced Copper Tubes, Aluminum Lanced Fins

1...17 2...17 2...17 2...17

14.6 16.5 16.5 21.3 3/8---in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins

2...15 2...15 4...15 4...15

5.5 5.5 5.5 7.3

1...17 2...17 2...17 2...17

3.9 3.9 3.9 5.2 Centrifugal Type, Belt Drive

1...10 x 10 1...10 x 10 1...10 x 10 1...10 x 10 1200 1600 2000 2400

1.20

2.40 1620 1725

48 56

680-1044

1075-1455

1.20 1.30/2.40* 2.40

2.40 2.90 2.90 1620 1725 1725 1725 1725 1725

48 48/56* 56 56 56 56

770-1185 1035-1460 1119-1585

1075-1455 1300-1685 1300-1685

Ball Ball Ball Ball

2100 2100 2100 2100

1.9/2.9

2.8/3.8

4.5

1...A...36

1...A...39

1.9/2.0 2.4/3.4 2.4/3.4

2.8/3.8 3.4/4.4 3.4/3.4

4.0 4.0 4.0

5 7

4.0 4.5 4.5

1...A...36 1....4...40 1...A...38

1...A...39 1...A...40 1...A...40

10.0-12.4 10.0-12.4 14.7-15.5 14.7-15.5 65 65

5 6 3

826

1233

70 75 95 65 60 60

5 6 5 6 5 5 3 3 3

31/

936 1248 1305

1233 1396 1396

31/

581B,C

Page 10

Table 1 — Physical Data 581B (cont)

UNIT SIZE 581B 036 048 060 072 FURNACE SECTION

Rollout Switch Cutout Temp (F)† 195 195 195 195

Burner Orifice Diameter (in. ...drill size)**

Natural Gas —Std 071/072 .113...33 .113...33 .113...33 .113...33

Propane —Alt†† 071/072 .089...43 .089...43 .089...43 .089...43

Thermostat Heat Anticipator Setting (amps) 208/230/460 v First Stage .14 .14 .14 .14 Second Stage .14 .14 .14 .14 Gas Input (Btuh) First Stage/Second Stage (3---phase units) 072 50,000/ 72,000 50,000/ 72,000 50,000/ 72,000 50,000/ 72,000

581B,C

Efficiency (Steady State) (%) 072 82 82 82 82

TemperatureRiseRange 072 15---45 15---45 15---45 15 --- 45

Manifold Pressure (in. wg) Natural Gas —Std 3.5 3.5 3.5 3.5 Propane —Alt†† 3.5 3.5 3.5 3.5 Maximum Static Pressure (in. wg) 1.0 1.0 1.0 1.0 Field Gas Connection Size (in.) 1/2 1/2 1/2 1/2

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief Cutout Reset (Auto.)

LOSS-OF-CHARGE SWITCH/LOW-PRESSURE (Liquid Line) (psig)

Cutout Reset (Auto.)

FREEZE PROTECTION THERMOSTAT

Opens (F) Closes (F)

OUTDOOR-AIR INLET SCREENS RETURN-AIR FILTERS

Quantity...Size (in.)

114/115 .113...33 .113...33 .113...33 .113...33 149/150 — .129...30 .129...30 .129...30

060N .102...38 .102...38 .102...38 — 090N .102...38 .102...38 .102...38 — 120N — .116...32 .116...32 —

114115 .089...43 .089...43 .089...43 .089...43

149/150 — .102...38 .102...38 .104...39

060N .082...45 .082...45 .082...45 — 090N .082...45 .082...45 .082...45 — 120N — .094...42 .094...42 —

115 82,000/115,000 82,000/115,000 82,000/115,000 82,000/115,000

150 — 120,000/150,000 120,000/150,000 120,000/150,000 071II —/72,000 —/72,000 —/72,000 — 114II —/115,000 —/115,000 —/115,000 — 149II — —/150,000 —/150,000 —

060N*** —/ 60,000 —/60,000 —/60,000 — 090N*** —/ 90,000 —/90,000 —/90,000 — 120N*** — —/120,000 —/120,000 —

115 80 81 81 81

150 — 80 80 80

071 82 82 82 —

114 80 81 81 —

149 — 80 80 —

060N 80 80 80 — 090N 80 80 80 — 120N — 80 80 —

115 55 ---85 35---65 35 ---65 35 --- 65

150 — 50 ---80 50---80 50 --- 80

071 15 ---45 15---45 15 ---45 —

114 55 ---85 35---65 35 ---65 —

149 — 50 ---80 50---80 —

060N 20 ---50 20---50 20 ---50 — 090N 30 ---60 30---60 30 ---60 — 120N — 40 ---70 40---70 —

450  50

428 320

7  3

22  5

30  5 45  5

Cleanable. Screen quantity and size varies with option selected.

2...16 x 25 x 2 4...16 x 16 x 2

Throwaway

LEGEND

Bhp — Brake Horsepower

**60,000 and 72,000 Btuh heat input units have 2 burners. 90,000 and 120,000 Btuh

heat input units have 3 burners. 115,000 Btuh heat input units and 150,000 Btuh Heat input units have 3 burners.

††A propane kit is available as an accessory. Kit may be used at elevations as high as

2000 ft. If a propane kit is used with Low NOx units, the Low NOx baffle must be removed a nd the units will no longer be classified as Lo w NOx units. ll Three-phase standard models have heating inputs as shown. Single-phase standard models have one-stage heating wi th heating input val ues.

***California compliant three-phase models.

†††California SCAQMD compliant low NO

controlled to 40 nanograms per joule or less.

models have combustion products that are

Page 11

Table 2—Physical Data 581C

/B(

)

MotorPulleyPitchDiameterA/B(i

n.)

SpeedChangeperFullTurno

MovablePulleyMaximumFul

BASE UNIT 581C 024 036 048 072 NOMINAL CAPACITY (tons) OPERATING WEIGHT (lb)

Unit Perfect Humidity Adaptive Dehumidification System EconoMi$er IV Roof Curb

COMPRESSOR

Quantity Oil (oz)

REFRIGERANT TYPE

Expansion Device Operating Charge (lb-oz)

Standard Unit Unit With Perfect Humidity Adaptive Dehumidification System

CONDENSER FAN

Quantity...Diameter (in.) Nominal Cfm Motor Hp...Rpm Watts Input (Total)

CONDENSER COIL

Rows...Fins/in. Tot a l F ace A r ea (sq f t )

EVAPORATOR COIL

Standard Unit

Rows...Fins/in. Tot a l F ace A r ea (sq f t )

Unit with Perfect Humidity Adaptive Dehumidification System

Rows...Fins/in. Tot a l F ace A r ea (sq f t )

EVAPORATOR FAN

Quantity...Size (in.) Nominal Cfm Maximum Continuous Bhp Std

Hi-Static

Motor Frame Size Std

Hi-Static

Motor Rpm Fan Rpm Range Std

Hi-Static

Motor Bearing Type Maximum Fan Rpm Motor PulleyPitch Diameter

in.

Hi-Static

Nominal Motor Shaft Diameter (in.) Std

Hi-Static

Fan Pulley Pitch Diameter (in.) Std

Hi-Static

Belt — Type...Length (in.) Std

Hi-Static

Pulley Center Line Distance (in.) Speed Changeper Full Turn o

Movable Pulley Flange (rpm)

Movable PulleyMaximum Full

Turns from Closed Position

Hi-Static

Factory Setting — Full Turns Open Std

Hi-Static

Factory Speed Setting (rpm) Std

Hi-Static

Fan Shaft Diameter at Pulley (in.)

Std

2 3 4 5

530 540 560 635

13 15 23 25 50 50 50 50

115 115 115 115

Scroll

1 1 1 1

25 42 56 53

R-22

Acutrol Metering Device

5 --- 3 7 --- 1 1 8 --- 8 12---11

1 0 --- 2 14 --- 0 14--- 13 21 --- 0

Propeller

1...22 1...22 1...22 1...22 3000 3500 3500 4100

/8...825

/4...1100

180 180 180 320

3/8---in. OD Enhanced Copper Tubes, Aluminum Lanced Fins

1...17 1...17 2...17 2...17

14.6 14.6 16.5 16.5 3/8---in. OD Enhanced Copper Tubes, Aluminum Double-Wavy Fins

2...15 2...15 2...15 4...15

4.2 5.5 5.5 5.5

1...17 1...17 2...17 2...17

3.5 3.9 3.9 3.9 Centrifugal Type, Belt Drive

1...10 x 10 1...10 x 10 1...10 x 10 1...10 x 10 800 1200 1600 2000

0.58

1.20 1.20 1.30/2.40*

2.40 2.40 2.90

48 48 48/56* 56 56 56

1620 1620 1620 1725

400-1000

680-1044 770-1185 1035-1460

1075-1455 1075-1455 1300-1685

Ball Ball Ball Ball

1620 2100 2100 2100

2.4/3.2

4.0

4.5

1...A...36

1.9/2.9 1.9/2.0 2.4/3.4

2.8/3.8 2.8/3.8 3.4/4.4

4.5 4.0 4.0

5 5

4.5 4.0 4.5

1...A...36 1...A...36 1....4...40

1...A...39 1...A...39 1...A...40

10.0---12.4 10.0-12.4 10.0-12.4 14.7-15.5

65 70 75 65 65 60

5 5 6 6 6 5 3 3 3

31/

826 936 1248

1233 1233 1396

31/

756

581B,C

Page 12

Table 2 — Physical Data 581C (cont)

UNIT SIZE 581C 024 036 048 060 FURNACE SECTION

Rollout Switch Cutout Temp (F)† 195 195 195 195

Burner Orifice Diameter (in. ...drill size)**

Natural Gas —Std 071/072 .113...33 .113...33 .113...33 .113...33

Propane —Alt†† 071/072 .089...43 .089...43 .089...43 .089...43

581B,C

Efficiency (Steady State) (%) 072 82 82 82 82

TemperatureRiseRange 072 15---45 15---45 15---45 15 --- 45

Manifold Pressure (in. wg) Natural Gas —Std 3.5 3.5 3.5 3.5 Propane —Alt†† 3.5 3.5 3.5 3.5 Maximum Static Pressure (in. wg) 1.0 1.0 1.0 1.0 Field Gas Connection Size (in.) 1/2 1/2 1/2 1/2

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief Cutout Reset (Auto.)

LOSS-OF-CHARGE SWITCH/LOW-PRESSURE (Liquid Line) (psig)

Cutout Reset (Auto.)

FREEZE PROTECTION THERMOSTAT

Opens (F) Closes (F)

OUTDOOR-AIR INLET SCREENS RETURN-AIR FILTERS

Quantity...Size (in.)

114/115 .113...33 .113...33 .113...33 .113...33 149/150 — .129...30 .129...30 .129...30

060N .102...38 .102...38 .102...38 — 090N .102...38 .102...38 .102...38 — 120N — .116...32 .116...32 —

114115 .089...43 .089...43 .089...43 .089...43

149/150 — .102...38 .102...38 .104...39

060N .082...45 .082...45 .082...45 — 090N .082...45 .082...45 .082...45 — 120N — .094...42 .094...42 —

115 82,000/115,000 82,000/115,000 82,000/115,000 82,000/115,000

150 — 120,000/150,000 120,000/150,000 120,000/150,000 071II —/72,000 —/72,000 —/72,000 — 114II —/115,000 —/115,000 —/115,000 — 149II — —/150,000 —/150,000 —

060N*** —/ 60,000 —/60,000 —/60,000 — 090N*** —/ 90,000 —/90,000 —/90,000 — 120N*** — —/120,000 —/120,000 —

115 80 81 81 81

150 — 80 80 80

071 82 82 82 —

114 80 81 81 —

149 — 80 80 —

060N 80 80 80 — 090N 80 80 80 — 120N — 80 80 —

115 55 ---85 35---65 35 ---65 35 --- 65

150 — 50 ---80 50---80 50 --- 80

071 15 ---45 15---45 15 ---45 —

114 55 ---85 35---65 35 ---65 —

149 — 50 ---80 50---80 —

060N 20 ---50 20---50 20 ---50 — 090N 30 ---60 30---60 30 ---60 — 120N — 40 ---70 40---70 —

450  50

428 320

7  3

22  5

30  5 45  5

Cleanable. Screen quantity and size varies with option selected.

2...16 x 25 x 2 4...16 x 16 x 2

Throwaway

LEGEND

Bhp — Brake Horsepower

**60,000 and 72,000 Btuh heat input units have 2 burners. 90,000 and 120,000 Btuh

heat input units have 3 burners. 115,000 Btuh heat input units and 150,000 Btuh Heat input units have 3 burners.

††A propane kit is available as an accessory. Kit may be used at elevations as high as

2000 ft. If a propane kit is used with Low NOx units, the Low NOx baffle must be

removed a nd the units will no longer be classified as Lo w NOx units. ll Three-phase standard models have heating inputs as shown. Single-phase standard models have one-stage heating wi th heating input values.

***California compliant three-phase models.

†††California SCAQMD compliant low NO

controlled to 40 nanograms per joule or less.

models have combustion products that are

Page 13

BLK

TO COMP

BLK

TO COMP

11 23

2321

208/230-1-60

(SIZES 581B036-060,

581C024-060)

11 23

2321

208/230-3-60

460-3-60

(SIZES 581B060, 072,

581C0060)

YEL

FIELD POWER SUPPLY

DISCONNECT

PER NEC

BLK

YEL

BLU

FIELD POWER SUPPLY

DISCONNECT

PER NEC

EQUIP

GND

TO COMP

IFC

11 23

YEL BLU

2321

208/230-3-60

480-3-60

(SIZES 581B036,048

581C036,048)

FIELD POWER SUPPLY

DISCONNECT

PER NEC

BLK

11 13

YEL BLU

2321

FIELD POWER SUPPLY

575-3-60

(SIZES 581B060, 072)

DISCONNECT

PER NEC

Fig. 12 --- Power Wiring Connections

(SIZES 581B036,048

581C036,048)

TO TB2

11 23

575-3-60

YEL

2321

FIELD POWER SUPPLY

DISCONNECT

PER NEC

BLU

581B,C

C06346

IPD/X

WIRE CONNECTIONS TO LOW-VOLTAGE SECTION

COOL STAGE 1

FAN

HEAT STAGE 1

COOL STAGE 2

HEAT STAGE 2

24 VAC HOT

24 VAC COM

N/A

OUTDOOR AIR

SENSOR

THERMOSTAT DIPSWITCH SETTINGS

ON OFF

LEGEND

NOTE: Un derlined letter indicates ac tive therm ostat output wh en configured for A/C operation.

Y1/W2

W/W1

Y/Y2

O/W2

Field Wiring

Fig. 13 --- Low --Voltage Connections With or

Without Economizer or Two--Position Damper

C06008

LOW VOLTAGE CONNECTIONS

INTEGRATED GAS UNIT CONTROLLER (IGC)

Fig. 14 --- Field Control Wiring

C06125

Page 14

IFM

208

/23

TD1

72541109631070620

024

208

/23

TD1

110.96310.70.6

2.0

208

/23

--1--

-60

TD1

725411688107064

208

/23

--3--

-60

725411037710706

---3-

--6

4508151391040

036

(3ton

)

104

---3-

--60HS5

863214231

03†20

104†26†

erfec

208

/23

--1--

-60

TD1

72541211151150649

208

/23

--3--

-60

725411419511506

---3-

--6

4508171451080

048

(4ton

)

106

---3-

--60HS5

863216138

03†20

108†26†

erfec

208

/23

--1--

-60

TD1

72541251501150666

208

/23

--3--

-60

725411731231150

---3-

--6

45081847010803†

060

(5ton

)

106

---3-

--60HS5

863217153

03†28

119†34†

erfec

581B,C

MINIMUM UNIT

DISCONNECT SIZE

POWER SUPPLY *

CONV

OUTLET

IFM

FAN MOTOR

COMBUSTION

FLA

FLA LRA

MOCP**

MCA

NO 16.3 20 15.6 69

NO 25.6 30 24.8 101

NO 18.5 25 18.3 90

NO 19.4 25 19.3 120

NO 9.0 15 8.9 46

NO 9.4 15 9.3 60

NO 7.6 10 7.5 36

NO 7.7 10 7.6 43

NO 7.7 10 8.0 48

NO 32.7 40 31.5 130

NO 24.0 30 23.6 110

NO 24.9 30 24.6 140

NO 11.9 15 11.6 53

NO 12.3 15 12.1 67

NO 10.1 15 9.9 44

NO 10.2 15 10.0 51

NO 10.3 15 10.1 56

NO 39.4 50 38.1 187

NO 28.9 35 28.3 168

NO 30.6 35 30.2 187

NO 13.9 20 13.6 92

NO 14.7 20 14.5 102

NO 11.5 15 11.2 66

NO 12.3 15 12.1 75

YES 22.3 25 21.2 73

YES 31.6 35 30.4 106

YES 24.5 30 23.8 95

YES 25.4 30 24.9 124

YES 11.7 15 11.4 48

YES 12.1 15 11.8 63

YES 9.7 15 9.5 38

YES 9.8 15 9.6 44

YES 9.8 15 9.6 50

YES 38.7 45 37.0 135

YES 30.0 35 29.1 115

YES 30.9 35 30.1 145

YES 14.6 20 14.1 55

YES 15.0 20 14.6 70

YES 12.3 15 11.9 46

YES 12.4 15 12.0 52

YES 12.5 15 12.1 58

YES 45.4 60 43.6 191

YES 34.9 40 33.8 173

YES 36.6 40 35.8 192

YES 16.6 20 16.1 95

YES 17.4 20 17.0 104

4.9

2.2

1.9

1 0.4

4.9

2.2

1.9

1 0.4† 2.6†

1 0.6

5.8

2.6

1 0.8† 2.6†

NO 12.2 15 12.0 79

YES 13.6 15 13.2 67

YES 14.4 20 14.1 76

YES 14.4 20 14.0 80

2.0

1 0.6

1 1.9† 3.4†

Table 3—Electrical Data 581C

VOLTAGE

COMPRESSOR OFM

RANGE

581C024--- 060

NOMINAL

IFM TYPE Min Max QTY RLA LRA QTY FLA FLA

V --- P H --- H z

UNIT SIZE

024

---

(2 tons)

2 3 0 --- 1 --- 6 0 STD 187 254 1 16 88 1 0.7 0.6 4.9

208

STD

187 254 1 10.3 77 1 0.7 0.6

2 3 0 --- 3 --- 6 0

208

414 508 1 5.1 39 1 0.4 0.3

HS 5.8

HS 2.6

STD

Perfect

Humidity

036

4 6 0 --- 3 --- 6 0

(3 tons)

5 7 5 --- 3 --- 6 0 HS 518 632 1 4.2 31 0.3† 2.0

2 3 0 --- 1 --- 6 0 STD 197 254 1 21 115 1 1.5 0.6 4.9

208

STD

187 254 1 14.1 95 1 1.5 0.6

2 3 0 --- 3 --- 6 0

208

414 508 1 7.1 45 1 0.8 0.3

HS 5.8

HS 2.6

STD

Perfect

Humidity

048

4 6 0 --- 3 --- 6 0

(4 tons)

5 7 5 --- 3 --- 6 0 HS 518 632 1 6.1 38 0.3† 2.0

2 3 0 --- 1 --- 6 0 STD 187 254 1 25 150 1 1.5 0.6 6.6

208

STD

187 254 1 17.3 123 1 1.5 0.6

2 3 0 --- 3 --- 6 0

208

414 508 1 8.4 70 1 0.8 0.3†

HS 7.5

HS 3.4

STD

Perfect

Humidity

060

4 6 0 --- 3 --- 6 0

(5 tons)

5 7 5 --- 3 --- 6 0 HS 518 632 1 7.1 53 0.3† 2.8

HACR --- Heating, Air Conditioning and Refrigeration

IFM --- Indoor (Evaporator) Fan Motor

LRA --- Locked Rotor Amps

MCA --- Minimum Circuit Amps

MOCP --- Maximum Overcurrent Protection

NEC --- National Electrical Code

OFM --- Outdoor (Condenser) Fan Motor

RLA --- Rated Load Amps

* The values listed in this table do not include power exhaust. See power exhaust table for power exhaust requirements.

** Fuse or HACR breaker

FLA --- Full Load Amps

{ 460v motor

NOTES:

Page 15

MINIMUM UNI

208/2

---1---

725

16881070649

D49

208

/23

-36

725

103771070

D22

036(3

Ton

s)4

--3---6

450

513910403

D19

10403

†

--3---6

S51

863

423

104†09†26

†

erfec

208/2

---1---

725

2371261070649

D49

208/2

---3---

725

135931070

D22

048(4

Ton

s)4

--3---6

450

644651040

D19

10403

†

--3---6

S51

863

644

10409

†26

†

erfec

208/2

---1---

725

2881691150666

D58

208/2

---3---

725

17312311506

D26

060(5

Ton

s)4

--3---6

450

9621080

D20

0603†

S51

863

71501

08†03

†34

†

erfec

TD0

658

208/2

---3---

725

205156114

675

TD0

326

--3---6

450

9675106

072(6

Ton

)

334

D20

0803†

--3---6

S51

863

77561

06†03

†34

†

erfec

DISCONNECT SIZE

POWER SUPPLY *

CONV

OUTLET

FLA

IFM

FAN MOTOR

COMBUSTION

FLA LRA

MOCP**

NO 25.6 30 25 101

YES 31.6 35 30 106

NO 18.5 25 18 90

NO 19.4 25 19 120

NO 9.0 15 9 46

NO 9.4 15 9 60

NO 7.6 10 7 36

NO 7.7 10 8 43

NO 8.3 10 8 52

NO 35.2 45 34 139

NO 22.5 30 22 106

NO 23.4 30 23 136

NO 10.6 15 10 54

NO 11.0 15 11 68

NO 10.3 15 10 45

NO 10.4 15 10 52

NO 11.0 15 11 61

NO 44.1 60 42 206

NO 28.9 35 28 168

NO 30.6 35 30 187

NO 14.7 20 14 84

NO 15.5 20 15 94

NO 11.5 15 11 63

NO 12.3 15 12 72

NO 12.2 15 12 76

NO 32.8 40 32 200

NO 34.5 40 34 219

NO 15.2 20 15 97

NO 16.0 20 16 107

NO 12.4 15 12 69

NO 13.2 20 13 79

YES 24.5 30 24 95

YES 25.4 30 25 124

YES 11.7 15 11 48

YES 12.1 15 12 63

YES 9.7 15 9 38

YES 9.8 15 10 44

YES 10.4 15 10 54

YES 41.2 50 39 144

YES 28.5 35 27 111

YES 29.4 35 29 140

YES 13.3 15 13 56

YES 13.7 15 13 70

YES 12.5 15 12 47

YES 12.6 15 12 53

YES 13.2 15 13 63

YES 50.1 60 48 210

YES 34.9 40 34 173

YES 36.6 40 36 192

YES 17.4 20 17 87

YES 18.2 20 18 96

YES 13.6 15 13 64

YES 14.4 20 14 73

YES 14.4 20 14 77

YES 38.8 45 37 205

YES 40.5 45 39 224

YES 17.9 20 17 99

YES 18.7 25 18 109

4.9

2.2

1.9

4.9

2.2

1.9

5.8

2.6

2.0

0.6 5.8

0.3 2.6

NO 12.8 15 13 81

YES 14.6 20 14 70

YES 15.4 20 15 80

YES 15.0 20 15 83

2.0

581B,C

Table 4—Electrical Data 581B

VOLTAGE

COMPRESSOR (each) OFM (each)

RANGE

IFM TYPE Min Max QTY RLA LRA QTY FLA FLA MCA

STD

0.6 0.3†

0.8† 0.3† 3.4†

1 0.4 0.3†

1 0.4† 0.9† 2.6†

187 254 1 10.3 77 1 0.7 0.6

414 508 1 5.1 39 1 0.4 0.3

HS 5.2

HS 2.6

STD

Perfect

Humidity

STD

187 254 1 13.5 93 1 0.7 0.6

HS 5.8

STD

1 0.4 0.3†

1 0.4 0.9† 2.6†

414 508 1 6.4 46.5 1 0.4 0.3

HS 2.6

STD

Perfect

Humidity

STD

187 254 1 17.3 123 1 1.5 0.6

414 508 1 9 62 1 0.8 0.3

HS 7.5

HS 3.4

STD

HS 518 632 1 7.1 50 1 2.8

STD

187 254 1 20.5 156 1 1.4

HS 0.6 7.5

STD

Perfect

Humidity

STD

0.8 0.3†

0.6† 0.3† 3.4†

414 508 1 9.6 75 1 0.6

STD

Perfect

Humidity

581B036---072

NOMINAL

V --- P H --- H z

UNIT SIZE

2 3 0 --- 1 --- 6 0 STD 187 254 1 16 88 1 0.7 0.6 4.9

208

036 (3 Tons) 46 0 --- 3 --- 6 0

2 3 0 --- 1 --- 6 0 STD 187 254 1 23.7 126 1 0.7 0.6 4.9

208

2 3 0 --- 3 --- 6 0

208

048 (4 Tons) 46 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0 HS 518 632 1 4.2 31 2.0

2 3 0 --- 1 --- 6 0 STD 187 254 1 28.8 169 1 1.5 0.6 6.6

208

2 3 0 --- 3 --- 6 0

208

5 7 5 --- 3 --- 6 0

060 (5 Tons) 46 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0 HS 518 632 1 6.4 40 2.0

2 3 0 --- 3 --- 6 0

208

4 6 0 --- 3 --- 6 0

5 7 5 --- 3 --- 6 0 HS 518 632 1 7.7 56 1 2.8

072 (6 Tons) HS 0.3 3.4

230--- 3 60

Page 16

Step 8 —Adjust Factory--Installed Options

Perfect Humidity Adaptive Dehumidification System

Perfect Humidity system operation can be controlled by field installation of a Bryant--approved humidistat. (See Fig. 15.)

NOTE: A light commercial Thermidistat device (Fig. 16) can be used instead of the humidistat if desired. The Thermidistat device includes a thermostat and a humidistat. The humidistat is normally used in applications where a temperature sensor is already provided.

581B,C

% RELATIVE HUMIDITY

Fig. 15 --- Accessory Field--Installed Humidistat

Fig. 16 --- Light Commercial Thermidistat Device

To install the humidistat:

1. Route humidistat cable through hole provided in unit control box.

2. Some models may be equipped with a raceway built into the corner post located on the left side of control box (See Fig. 14). This raceway provides the required clearance between high--voltage and low voltage wiring. For models without a raceway, ensure to provide the NEC required clearance between the high--voltage and low-- voltage wiring.

3. Use a wire nut to connect humidistat cable into lowvoltage wiring as shown in Fig. 17.

C06358

C06359

To install Thermidistat device:

1. Route Thermidistat cable through hole provided in unit control box.

3. A field-supplied relay must be installed between the Thermidistat and the Humidi-Mizer circuit (recommended relay: HN61KK324). (See Fig. 18.) The relay coil is connected between the DEHUM output and C (common) of the unit. The relay controls thePerfect Humidity solenoid valve and must be wired between the Perfect Humidity fuse and the low-pressure switch. Refer to the installation instructions included with the Bryant Light Commercial Thermidistat device for more information.

Manual Outdoor

Damper

The outdoor--air hood and screen are attached to the basepan at the bottom of the unit for shipping.

Assembly:

1. Determine quantity of ventilation required for building. Record amount for use in Step 8.

2. Remove and save outdoor air opening panel and screws. (See Fig. 19.)

3. Remove evaporator coil access panel. Separate hood and screen from basepan by removing the 4 screws securing them. Save all screws.

4. Replace evaporator coil access panel.

5. Place hood on front of outdoor air opening panel. See Fig. 20 for hood details. Secure top of hood with the

4screwsremovedinStep3.(SeeFig.21.)

6. Remove and save 6 screws (3 on each side) from sides of the manual outdoor-air damper.

7. Align screw holes on hood with screw holes on side of manual outdoor-air damper. (See Fig. 28 and 21.) Secure hood with 6 screws from Step 6.

8. Adjust minimum position setting of the damper blade by adjusting the manual outdoor-air adjustment screws on the front of the damper blade. (See Fig. 19.) Slide blade vertically until it is in the appropriate position determined by Fig. 22. Tighten screws.

9. Remove and save screws currently on sides of hood. Insert screen. Secure screen to hood using the screws. (See Fig. 21.)

Convenience

Outlet

An optional convenience outlet provides power for rooftop use. For maintenance personnel safety, the convenience outlet power is off when the unit disconnect is off. Adjacent unit outlets may be used for service tools.

Page 17

CB — Circuit Breaker CR — Cooling Relay DHR — Dehumidify Relay DSV — Discharge Solenoid Valve HR — Heater Relay LPS — Low Pressure Switch LSV — Liquid Solenoid Valve LT LO — Low Temperature Lockout

Field Splice

Fig. 17 --- Typical Perfect Humidityt Adaptive Dehumidification System

LEGEND

Terminal (Unmarked)

Splice

Factory Wiring

Field Control Wiring

Field Power Wiring

Humidistat Wiring (208/230--V Unit Shown)

C06128

581B,C

LCT

C Y1 Y2

G W1 W2

DEHUM

TSTAT WIRES

LEGEND

CB — Circuit Breaker LCT — Light Commercial Thermidistat™ Device LLSV — Liquid Line Solenoid Valve LT LO — Low Temperature Lockout

Fig. 18 --- Typical Rooftop Unit with Perfect Humidity

Adaptive Dehumidification System with Thermidistat Device

OUTDOOR AIR OPENING PANEL

3 SCREWS (SIDE)

ROOF TOP UNIT

C Y1 Y2

W1 W2

PINK

3.2 AMPS

LTL O

PERFECT HUMIDITY SYSTEM

RED

24 V

PINK

FROM PERFECT HUMIDITY SYSTEM LLSV

C06360

Fig. 19 --- Damper Panel with Manual Outdoor--Air

Damper Installed

C06130

C06013

Fig. 20 --- Outdoor-- Air Hood Details

Page 18

581B,C

Fig. 21 --- Outdoor-- Air Damper With

Hood Attached

Fig. 22 --- Outdoor-- Air Damper Position Setting

ECONOMI$ER IV CONTROLLER

WIRING HARNESS

CTUATOR

OUTSIDE AIR TEMPERATURE SENSOR

LOW AMBIENT SENSOR

C06131

C06132

Optional Economi$er

See Fig. 23 for EconoMi$er IV component locations. NOTE: These instructions are for installing the optional

EconoMi$er IV. Refer to the accessory EconoMi$er IV when field installing an EconoMi$er IV accessory.

1. To remove the existing unit filter access panel, raise the panel and swing the bottom outward. The panel is now disengaged from the track and can be removed. (See Fig. 24.)

2. The box with the economizer hood components is shipped in the compartment behind the economizer. The EconoMi$er IV controller is mounted on top of the EconoMi$er IV. To remove the component box from its shipping position, remove the screw holding the hood box bracket to the top of the economizer. Slide the hood box out of the unit. (See Fig. 25.)

IMPORTANT: If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not be used and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly.

3. The indoor coil access panel will be used as the top of the hood. Remove the screws along the sides and bottom of the indoor coil access panel. (See Fig. 26.)

4. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. (See Fig. 27.)

5. Remove the shipping tape holding the economizer barometric relief damper in place.

6. Insert the hood divider between the hood sides. (See Fig. 28 and 29.) Secure hood divider with 2 screws on each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.

7. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. (See Fig. 28.)

8. Caulk the ends of the joint between the unit top panel and the hood top. (See Fig. 26.)

9. Replace the filter access panel.

10. Install all EconoMi$er IV accessories. EconoMi$er IV wiring is shown in Fig. 29.

Barometric flow capacity is shown in Fig. 30. Outdoor air leakage is shown in Fig. 33. Return air pressure drop is shown in Fig. 32.

FILTER ACCESS PANEL

C06021

Fig. 23 --- EconoMi$er IV Component Locations

COMPRESSOR ACCESS PANEL

OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL

Fig. 24 --- Typical Access Panel Locations

C06023

Page 19

Fig. 25 --- Hood Box Removal

CAULK

INDOOR COIL ACCESS PANEL

HERE

HOOD BOX BRACKET

SIDE PANEL

TOP SIDE PANEL

INDOOR COIL ACCESS PANEL

C06024

Supply Air Temperature (SAT) Sensor

The supply air temperature sensor is a 3k ohm thermistor located at the inlet of the indoor fan. (See Fig. 34.) This sensor is factory installed. The operating range of temperature measurement is 0 to 158_F . See Table 5 for sensor temperature/resistance values.

Table 5—Supply Air Sensor Temperature/

Resistance Values

TEMPERATURE (F) RESISTANCE (ohms)

–58 –40 –22

–4 14 32 50 68 77

86 104 122 140 158 176 185 194 212 230 248 257 266 284 302

17 1/4”

200,250 100,680

53,010 29,091 16,590

9,795 5,970 3,747 3,000 2,416 1,597 1,080

746 525 376 321 274 203 153 116 102

89 70 55

581B,C

C06025

Fig. 26 --- Indoor Coil Access Panel Relocation

TOP PANEL

INDOOR COIL ACCESS PANEL

LEFT HOOD SIDE

19 1/16”

SCREW

33 3/8”

HOOD DIVIDER

C06026

Fig. 27 --- Outdoor-- Air Hood Construction

Economi$er IV Standard

Sensors

Outdoor Air Temperature (OAT) Sensor

The outdoor air temperature sensor (HH57AC074) is a 10 to 20 mA device used to measure the outdoor-air temperature. The outdoor-air temperature is used to determine when the EconoMi$er IV can be used for free cooling. The sensor is factory-installed on the EconoMi$er IV in the outdoor airstream. (See Fig. 23 and 33.) The operating range of temperature measurement is 40_ to 100_F.

DIVIDER

OUTSIDE AIR

HOOD

CLEANABLE

BAROMETRIC RELIEF

ALUMINUM FILTER

FILTER

FILTE CLIP

Fig. 28 --- Filter Installation

The temperature sensor looks like an eyelet terminal with wires running to it. The sensor is located in the “crimp end” and is sealed from moisture.

Outdoor Air Lockout Sensor

The Economi$er IV is equipped with an ambient temperature lockout switch located in the outdoor air stream which is used to lockout the compressors below a 42_F ambient temperature. (See Fig. 23.)

C06027

Page 20

Economi$er IV Control

APPLICATION

Modes

Determine the EconoMi$er IV control mode before set up of the control. Some modes of operation may require different sensors. (See Table 6.) The EconoMi$er IV is supplied from the factory with a supply--air temperature sensor and an outdoor-- air temperature sensor. This allows for operation of the EconoMi$er IV with outdoor air dry bulb changeover control. Additional accessories can be added to allow for different types of changeover control and operation of the EconoMi$er IV and unit.

Outdoor Dry Bulb Changeover

The standard controller is shipped from the factory configured for outdoor dry bulb changeover control. The outdoor--air and supply--air temperature sensors are included as standard. For this control mode, the outdoor temperature is compared to an adjustable set point selected on the control. If the outdoor-air temperature is above the set point, the EconoMi$er IV will adjust the outdoor-air dampers to minimum position. If the outdoor air temperature is below the set point, the position of the outdoor air dampers will be controlled to provide free cooling using outdoor air. When in this mode, the LED next to the free cooling set point

581B,C

potentiometer will be on. The changeover temperature set point is controlled by the free cooling set point potentiometer located on the control. (See Fig. 35.) The scale on the potentiometer is A, B, C, and D. See Fig. 36 for the corresponding temperature changeover values.

Table6—Economi$erIVSensorUsage

APPLICATION

Outdoor Air

Dry Bulb

Differential

Dry Bulb

Single Enthalpy HH57AC078

Differential

Enthalpy

CO2for DCV

Control using a

Wall-Mounted

Sensor

CO2for DCV

Control using a

Duct-Mounted

Sensor

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on m a ny

different base units. As such, these kits may contain parts that will not be

needed for installation. † 33ZCSENCO2 is an accessory CO ** 33ZCASPCO2 is an accessory aspirator box required for duct-mounted

applications. †† CRCBDIOX005A00 is an accessory that contains both 33ZC SENCO2

and 33ZCASPCO2 accessories.

ECONOMI$ER IV WITH OUTDOOR AIR

33ZCSENCO2†

33ZCASPCO2**

DRY BULB SENSOR

Accessories Required

None. The outdoor air dry bulb sensor

is factory installed.

CRTEMPSN002A00*

HH57AC078

and

CRENTDIF004A00*

33ZCSENCO2

and

sensor.

CRCBDIOX005A00††

Differential Dry Bulb Control

For differential dry bulb control the standard outdoor dry bulb sensor is used in conjunction with an additional accessory dry bulb sensor (part number CRTEMPSN002A00). The accessory sensor must be mounted in the return airstream. (See Fig. 37.) Wiring is provided in the EconoMi$er IV wiring harness. (See Fig. 29.)

In this mode of operation, the outdoor-air temperature is compared to the return-air temperature and the lower temperature airstream is used for cooling. When using this mode of changeover control, turn the enthalpy setpoint potentiometer fully clockwise to the D setting. (See Fig. 35.)

Outdoor Enthalpy Changeover

For enthalpy control, accessory enthalpy sensor (part number HH57AC078) is required. Replace the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location. (See Fig. 23 and 33.) When the outdoor air enthalpy rises above the outdoor enthalpy changeover set point, the outdoor-air damper moves to its minimum position. The outdoor enthalpy changeover set point is set with the outdoor enthalpy set point potentiometer on the EconoMi$er IV controller. The set points are A, B, C, and D. (See Fig. 38.) The factory-installed 620-ohm jumper must be in place across terminals SR and SR+ on the EconoMi$er IV controller. (See Fig. 23 and 39.)

Differential Enthalphy Control

For differential enthalpy control, the EconoMi$er IV controller uses two enthalpy sensors (HH57AC078 and CRENTDIF004A00), one in the outside air and one in the return air duct. The EconoMi$er IV controller compares the outdoor air enthalpy to the return air enthalpy to determine EconoMi$er IV use. The controller selects the lower enthalpy air (return or outdoor) for cooling. For example, when the outdoor air has a lower enthalpy than the return air, the EconoMi$er IV opens to bring in outdoor air for free cooling.

Replace the standard outside air dry bulb temperature sensor with the accessory enthalpy sensor in the same mounting location. (See Fig. 23.) Mount the return air enthalpy sensor in the return air duct. (See Fig. 37.) Wiring is provided in the EconoMi$er IV wiring harness. (See Fig. 29.) The outdoor enthalpy changeover set point is set with the outdoor enthalpy set point potentiometer on the EconoMi$er IV controller. When using this mode of changeover control, turn the enthalpy setpoint potentiometer fully clockwise to the D setting.

Page 21

FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK

581B,C

DCV— Demand Controlled Ventilation IAQ — Indoor Air Quality LA — Low Ambient Lockout Device OAT — Outdoor-Air Temperature POT— Potentiometer RAT— Return-Air Temperature

2500

2000

1500

1000

500

FLOW IN CUBIC FEET PER MINUTE (cfm)

0.05

STATIC PRESSURE (in. wg)

Fig. 30 --- Barometric Flow Capacity

LEGEND

0.13 0.20 0. 22 0.25 0.30 0.35 0.40 0.45 0.50

FLOW IN CUBIC FEET PER MINUTE (cfm)

STATIC PRESSURE (in. wg)

Fig. 31 --- Outdoor-- Air Damper Leakage

Potentiometer Defaults Settings: Power Exhaust Middle Minimum Pos. Fully Closed DCV Max. Middle DCV Set Middle Enthalpy C Setting

Fig. 29 --- EconoMi$er IV Wiring

0.15

0.25

C06030

C06031

NOTES:

1. 620 ohm, 1 watt 5% resistor should be removed only when using differential enthalpy or dry bulb.

2. If a separate field-supplied 24 v transformer is used for the IAQ sensor power supply, it cannot have the secondary of the transformer grounded.

3. For field-installed remote minimum position POT, remove black wire jumper between P and P1 and set control minimum position POT to the minimum position.

C06028

6000

5000

4000

3000

2000

1000

0.05 0.10 0.15 0.20 0.25 0.30 0.35

FLOW IN CUBIC FEET PER MINUTE (cfm)

STATIC PRESSURE (in. wg)

C06032

Fig. 32 --- Return--Air Pressure Drop

HH57AC078 ENTHALPY SENSOR

C7400A1004

MOUNTING PLATE

C06361

Fig. 33 --- Enthalpy Sensor and Mounting Plate

Page 22

(

)+(TR

)

581B,C

SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION

SUPPLY AIR TEMPERATURE SENSOR

Fig. 34 --- Supply Air Sensor Location

C06033

Minimum Position Control

There is a minimum damper position potentiometer on the EconoMi$er IV controller. (See Fig. 35.) The minimum damper position maintains the minimum airflow into the building during the occupied period.

When using demand ventilation, the minimum damper position represents the minimum ventilation position for VOC (volatile organic compound) ventilation requirements. The maximum demand ventilation position is used for fully occupied ventilation.

When demand ventilation control is not being used, the minimum position potentiometer should be used to set the occupied ventilation position. The maximum demand ventilation position should be turned fully clockwise.

Adjust the minimum position potentiometer to allow the minimum amount of outdoor air, as required by local codes, to enter the building. Make minimum position adjustments with at least 10_F temperature difference between the outdoor and return-air temperatures.

To determine the minimum position setting, perform the following procedure:

1. Calculate the appropriate mixed air temperature using the following formula:

C06034

Fig. 35 --- EconoMi$er IV Controller Potentiometer

and LED Locations

Indoor Air Quality (IAQ) Sensor Input

The IAQ input can be used for demand control ventilation control based on the level of CO

measured in the space or return air

duct. Mount the accessory IAQ sensor according to manufacturer

specifications. The IAQ sensor is wired to the AQ and AQ1 terminals of the controller. Adjust the DCV potentiometers to correspond to the DCV voltage output of the indoor air quality sensor at the user-determined set point. (See Fig. 40.)

If a separate field-supplied transformer is used to power the IAQ sensor, the sensor must not be grounded or the EconoMi$er IV control board will be damaged.

Exhaust Set Point Adjustment

The exhaust set point will determine when the exhaust fan runs based on damper position (if accessory power exhaust is installed). The set point is modified with the Exhaust Fan Set Point (EXH SET) potentiometer. (See Fig. 35.) The set point represents the damper position above which the exhaust fans will be turned on. When there is a call for exhaust, the EconoMi$er IV controller provides a 45  15 second delay before exhaust fan activation to allow the dampers to open. This delay allows the damper to reach the appropriate position to avoid unnecessary fan overload.

100

TO= Outdoor-Air Temperature OA = Percent of Outdoor Air

= Retur n-Air Tem perat ure

RA = Percent of Return Air

= Mixed-Air Temperature

As an example, if local codes require 10% outdoor air during occupied conditions, outdoor-air temperature is 60_F, a nd return-air temperature is 75_F.

(60 x .10) + (75 x .90) = 73.5_F

2. Disconnect the supply air sensor from terminals T and T1.

3. Ensure that the factory-installed jumper is in place across terminals P and P1. If remote damper positioning is being used, make sure that the terminals are wired according to Fig. 29 and that the minimum position potentiometer is turned fully clockwise.

4. Connect 24 vac across terminals TR and TR1.

5. Carefully adjust the minimum position potentiometer until the measured supply air temperature matches the calculated value.

6. Reconnect the mixed air sensor to terminals T and T1.

Remote control of the EconoMi$er IV damper is desirable when requiring additional temporary ventilation. If a field-supplied remote potentiometer (Honeywell part number S963B1128) is wired to the EconoMi$er IV controller, the minimum position of the damper can be controlled from a remote location.

Page 23

To control the minimum damper position remotely, remove the

(

)+(TR

)

factory-installed jumper on the P and P1 terminals on the EconoMi$er IV controller. Wire the field-supplied potentiometer to the P and P1 terminals on the EconoMi$er IV controller. (See Fig. 39.)

Damper Movement

Damper movement from full open to full closed (or vice versa)

/2minutes.

takes 2

Thermostats

The EconoMi$er IV control works with conventional thermostats that have a Y1 (cool stage 1), Y2 (cool stage 2), W1 (heat stage

1), W2 (heat stage 2), and G (fan). The EconoMi$er IV control does not support space temperature sensors. Connections are made at the thermostat terminal connection board located in the main control box.

LED ON

LED OFF

LED ON

LED OFF

DEGREES FAHRENHEIT

LED ON

LED OFF

LED ON

LED OFF

100

C06035

Fig. 36 --- Outside Air Temperature

Changeover Set Points

ECONOMI$ER IV CONTROLLER

ECONOMI$ER IV

Occupancy Control

The factory default configuration for the EconoMi$er IV control is occupied mode. Occupied mode is provided by the black jumper from terminal TR to terminal N. When unoccupied mode is desired, install a field-supplied timeclock function in place of the jumper between TR and N. (See Fig. 29.) When the timeclock contacts are closed, the EconoMi$er IV control will be in occupied mode. When the timeclock contacts are open (removing the 24-v signal from terminal N), the EconoMi$er IV will be in unoccupied mode.

Typically the maximum ventilation rate will be about 5 to 10% more than the typical cfm required per person, using normal outside air design criteria.

Demand Controlled Ventilation (DCV)

When using the EconoMi$er IV for demand controlled ventilation, there are some equipment selection criteria which should be considered. When selecting the heat capacity and cool capacity of the equipment, the maximum ventilation rate must be evaluated for design conditions. The maximum damper position must be calculated to provide the desired fresh air.

A proportional anticipatory strategy should be taken with the following conditions: a zone with a large area, varied occupancy, and equipment that cannot exceed the required ventilation rate at design conditions. Exceeding the required ventilation rate means the equipment can condition air at a maximum ventilation rate that is greater than the required ventilation rate for maximum occupancy. A proportional-anticipatory strategy will cause the fresh air supplied to increase as the room CO even though the CO the CO

level reaches the set point, the damper will be at

set point has not been reached. By the time

level increases

maximum ventilation and should maintain the set point. In order to have the CO

sensor control the economizer damper in

this manner, first determine the damper voltage output for minimum or base ventilation. Base ventilation is the ventilation required to remove contaminants during unoccupied periods. The following equation may be used to determine the percent of outside-air entering the building for a given damper position. For best results there should be at least a 10 degree difference in outside and return-air temperatures.

581B,C

GROMMET

RETURN AIR TEMPERATURE SENSOR

RETURN DUCT (FIELD-PROVIDED)

Fig. 37 --- Return Air Temperature or Enthalpy

Sensor Mounting Location

C06036

100

TO= Outdoor-Air Temperature OA = Percent of Outdoor Air

= Retur n-Air Tem perat ure

RA = Percent of Return Air

= Mixed-Air Temperature

Once base ventilation has been determined, set the minimum damper position potentiometer to the correct position.

Page 24

581B,C

CONTROL

CURVE

A B C D

CONTROL POINT

APPROX.

deg. F (deg. C)

AT 50% RH

73 (23) 70 (21) 67 (19) 63 (17)

ENTHALPY BTU PER POUND DRY AIR

(13)

(10)

(7) 40 (4)

35 (2)

(16)

(29)90(32)95(35)

(21)

(18)

(27)

(24)

100

105 (41)

110 (43)

(38)

RELATIVE HUMIDITY (%)

(2)

(4)

(10)

(7)

(13)

(16)

(18)

APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)

Fig. 38 --- Enthalpy Changeover Set Points

The same equation can be used to determine the occupied or maximum ventilation rate to the building. For example, an output of 3.6 volts to the actuator provides a base ventilation rate of 5% and an output of 6.7 volts provides the maximum ventilation rate of 20% (or base plus 15 cfm per person). Use Fig. 37 to determine the maximum setting of the CO

sensor. For example,

a 1100 ppm set point relates to a 15 cfm per person design. Use the 1100 ppm curve on Fig. 40 to find the point when the CO sensor output will be 6.7 volts. Line up the point on the graph with the left side of the chart to determine that the range configuration for the CO

sensor should be 1800 ppm. The

EconoMi$er IV controller will output the 6.7 volts from the CO sensor to the actuator when the CO2concentration in the space is at 1100 ppm. The DCV set point may be left at 2 volts since the

sensor voltage will be ignored by the EconoMi$er IV

controller until it rises above the 3.6 volt setting of the minimum position potentiometer.

Once the fully occupied damper position has been determined, set the maximum damper demand control ventilation potentiometer to this position. Do not set to the maximum position as this can result in over-ventilation to the space and potential high-humidity levels.

(21)

(24)

(27)

(29)90(32)95(35)

105

100 (38)

(41)

110 (43)

HIGH LIMIT CURVE

C06037

TR1

24 Vac

Vac

COM

HOT

EF1

2V 10V

EXH

Open

2V 10V

DCV

2V 10V

Free Cool

EXH

DCV

Min Pos

Max

Set

AQ1

SO+

SR+

C06038

Fig. 39 --- EconoMi$er IV Control

Page 25

6000

5000

CO SENSOR MAX RANGE SETTING

4000

3000

2000

1000

RANGE CONFIGURATION (ppm)

2345678

DAMPER VOLTAGE FOR MAX VENTILATION RATE

Fig. 40 --- CO2Sensor Maximum Range Setting

Sensor Configuration

The CO

sensor has preset standard voltage settings that can be

selected anytime after the sensor is powered up. (See Table 7.) Use setting 1 or 2 for Bryant equipment. (See Table 7.)

1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to select the preset number. (See Tab le 7.)

4. Press Enter to lock in the selection.

5. Press Mode to exit and resume normal operation.

The custom settings of the CO

sensor can be changed anytime

after the sensor is energized. Follow the steps below to change the non-standard settings:

1. Press Clear and Mode buttons. Hold at least 5 seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to toggle to the NONSTD menu and press Enter.

4. Use the Up/Down button to toggle through each of the nine variables, starting with Altitude, until the desired setting is reached.

5. Press Mode to move through the variables.

6. Press Enter to lock in the selection, then press Mode to continue to the next variable.

Dehumidification of Fresh Air with DCV Control

Information from ASHRAE indicates that the largest humidity load on any zone is the fresh air introduced. For some applications, a device such as an energy recovery unit can be added to reduce the moisture content of the fresh air being brought into the building when the enthalpy is high. In most cases, the normal heating and cooling processes are more than adequate to remove the humidity loads for most commercial applications.

If normal rooftop heating and cooling operation is not adequate for the outdoor humidity level, an energy recovery unit and/or a dehumidification option should be considered.

800 ppm 900 ppm 1000 ppm 1100 ppm

Step 9 —Adjust Evaporator--Fan Speed

Adjust evaporator-fan speed to meet jobsite conditions. Tables 8 and 9 show fan rpm at motor pulley settings. Tables 10

and 14 show maximum amp draw of belt-drive motor. Table 13 shows sound data. Refer to Tables 15--34 for performance data. See Table 11 for accessory static pressure drop. See Fig. 41 for the Perfect Humidity system static pressure drops.

Belt Drive

Fan motor pulleys are factory set for speed shown in Table 1 or 2. Check pulley alignment and belt tension prior to start-up.

To change fan speed:

NOTE: Once the required flange position is determined for the correct blower rpm, it is recommended (bu not required) that the variable pitch pulley be replaced with a corresponding size fixed sheave pulley.

To align fan and motor pulleys, loosen fan pulley setscrews and slide fan pulley along fan shaft. Make angular alignment by loosening motor from mounting.

Additional motor and fan alignment, as well as angular alignment can be made by loosening the four motor mounting bolts from the mounting plate.

To adjust belt tension:

Motors

1. Shut off the unit power supply and tag disconnect.

2. Loosen the belt by loosening the fan motor mounting nuts. (See Fig. 42.)

3. Loosen movable pulley flange setscrew. (See Fig. 43.)

4. Screw movable flange toward fixed flange to increase speed and away from fixed flange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maximum speed specified in Table 1 or 2.

5. Set movable flange at nearest keyway of pulley hub and tighten setscrew. (See T able 1 or 2 for speed change for each full turn of pulley flange.)

6. Adjust belt tension and align fan and motor pulleys per guidance below.

1. Loosen the two motor mounting nuts as shown in Fig. 42. Some models may have a third mounting nut located on the opposite side of the fan motor mounting plate.

2. Slide motor mounting plate away from fan scroll for proper belt tension (

/2-in.deflectionwith8to10lbof

force) and tighten mounting nuts.

3. Adjust lock bolt and nut on mounting plate to secure motor in fixed position.

C06039

581B,C

Page 26

Table 7—CO

BuildingControlSystem

Sensor Standard Settings

SETTING EQUIPMENT OUTPUT

Interface w/Standard

Building Control System

Economizer

Health & Safety Proportional —

Parkin g/Air Intakes/

581B,C

LEGEND ppm — Parts Per Million

Loading Docks

0.35

0.3

0.25

VENTILATION

RATE

(cfm/Person)

Proportional Any

Exponential An y

Proportional 15

Proportional 20

Exponential 15

Exponential 20

Proportional —

ANALOG OUTPUT

0-10V

4-20 mA

2-10V

7-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

0-10V

4-20 mA

CONTROL RANGE

(ppm)

0-2000 1000 50

0-2000 1100 50

0-1100 1100 50

0- 900 900 50

0-1100 1100 50

0- 900 900 50

0-9999 5000 500

0-2000 700 50

OPTIONAL

RELAY SETPOINT

(ppm)

RELAY

HYSTERESIS

(ppm)

DELTA P IN. WG

0.2

0.15

0.1

0.05

4&5ton

6 ton

3 ton

1000

2000

3000

4000

5000

6000

C06133

Fig. 41 --- Perfect Humidityt Adaptive Dehumidification System Static Pressure Drop (in. wg)

Fig. 42 --- Belt Drive Motor Mounting

C06134

Fig. 43 --- Indoor--Fan Pulley Adjustment

C06041

Page 27

Table 8—581B and 581C Fan Rpm at Motor Pulley Setting With Standard Motor*

Three

1.20100

Three

1.20100

Three

2.40212

072

Three

2.40212

036

Three

2.40212

048

Three

2.40212

060

Three

2.90261

072

Three

2.90261

UNIT

024 036 048 060 072

*Approximate fan rpm shown (standard motor/drive).

936 906 876 846 816 786 756 726 696 666 639 — — 1044 1008 971 935 898 862 826 789 753 716 680 — — 1185 1144 1102 1061 1019 978 936 895 853 812 770 — — 1460 1425 1389 1354 1318 1283 1248 1212 1177 1141 1106 1070 1035 1585 1538 1492 1445 1399 1352 1305 1259 1212 1166 1119 — —

1 11/

Table 9—581B Fan Rpm at Motor Pulley Setting With High-Static Motor*

UNIT

036 048 060 072

*Approximate fan rpm shown (high-static motor/drive).

1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 — — 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 — —

1 11/

MOTOR PULLEY TURNS OPEN

2 21/

3 31/

4 41/

5 51/

MOTOR PULLEY TURNS OPEN

2 21/

3 31/

4 41/

5 51/

Table 10—Evaporator-Fan Motor Data — Standard Motor

UNIT 581B 581C

024

036

048

060

072

Bhp — Brake Horsepower

*Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence. Using the

fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

UNIT

PHASE

MAXIMUM

CONTINUOUS BHP*

MAXIMUM

OPERATING WATTS*

UNIT VOLTAGE

Single 0.58 580 208/230 2.0 Single 1.20 1000 208/230 4.9

208/230 4.9

Three 1.20 1000

460 2.2 575 2.2

Single 1.20 1000 208/230 4.9

208/230 4.9

Three 1.20 1000

460 2.2 575 2.2

Single 1.30 1455 208/230 7.0

208/230 6.7

Three 2.40 2120

460 3.0 575 3.0

208/230 6.7

Three 2.40 2120

460 3.0 575 3.0

LEGEND

MAXIMUM

AMP DRAW

Table 11—Accessory Static Pressure

COMPONENT

600 800 1000 1250 1500 1750 2000 2250 2500 2750 3000

Vertical EconoMi$er IV 0.010 0.020 0.035 0.045 0.065 0.080 0.120 0.145 0.175 0.220 0.255

Horizontal EconoMi$er IV — — — — — 0.100 0.125 0.150 0.180 0.225 0.275

CFM

581B,C

Table 12—Evaporator-Fan Motor Data — High-Static Motors

UNIT 581B

036

048

060

072

LEGEND Bhp — Brake Horsepower *Extensive motor and electrical testing on these units ensures that the full horsepower and watts range of the motors can be utilized with confidence. Using the

fan motors up to the ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

UNIT

PHASE

MAXIMUM

CONTINUOUS BHP*

MAXIMUM

OPERATING WATTS*

Three 2.40 2120

Three 2.90 2615

UNIT VOLTAGE

208/230 6.7

460 3.0 575 3.0

208/230 6.7

460 3.0 575 3.0

208/230 8.6

460 3.9 575 3.9

208/230 8.6

460 3.9 575 3.9

MAXIMUM

AMP DRAW

Page 28

Table 13—581B Outdoor Sound Power (Total Unit)

UNITRATIN

WEIGHTE

(Cfm)

ARI

UNIT

036, 048 060, 072

LEGEND

ARI --- Air Conditioning and Refrigeration Institute

RATING

(decibels)

76 55.9 66.0 64.0 66.2 68.4 64.5 61.7 57.3 80 59.1 68.9 68.7 71.9 74.0 68.9 65.7 59.0

63 125 250 500 1000 2000 4000 8000

OCTAVE BANDS

Table 14—581C Outdoor Sound Power (Total Unit)

ARI

RATING

(decibels)

024 ---048 76 76 55.9 66.0 64.0 66.2 68.4 64.5 61.7 57.3

060 80 80 59.1 68.9 68.7 71.9 74.0 68.9 65.7 59.0

A ---

(db)

63 125 250 500 1000 2000 4000 8000

OCTAVEBANDS

GENERAL FAN PERFORMANCE NOTES

581B,C

1. Values include losses for filters, unit casing, and wet coils. See Table 11 and Fig. 38 for accessory/FIOP static pressure information.

2. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with confidence. Using the fan motors up to the ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. See Tables 8 and 9 for additional information.

3. Use of a field-supplied motor may affect wire sizing. Contact your Bryant representative to verify.

4. Interpolation is permissible. Do not extrapolate.

Table 15—Fan Performance 581C 024 — Vertical Discharge Units; Standard Motor (Belt Drive)**

AIRFLOW

600 700 800 900

1000

EXTERNAL STATIC PRESSURE (in. wg)

0.1 0.2 0.4 0.6 0.8 1.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

500 0.08 531 0.08 607 0.14 713 0.21 788 0.29 529 0.09 567 0.09 633 0.16 739 0.24 816 0.32 547 0.10 592 0.12 660 0.19 761 0.27 845 0.37 570 0.13 620 0.14 691 0.22 793 0.32 870 0.42 599 0.15 650 0.16 717 0.26 818 0.36 894 0.47

Rpm Bhp

878 0.37 902 0.41 937 0.47 957 0.53 981 0.58

Page 29

Table 16—Fan Performance 581B 036, 581C 036 — Vertical Discharge Units; Standard Motor

AIRFLOW

(Belt Drive)*

AIRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

567 0.15 145 688 0.22 222 786 0.30 296 871 0.37 368 947 0.44 437 599 0.18 177 717 0.27 265 814 0.35 349 897 0.43 430 972 0.51 509 632 0.22 215 747 0.31 313 842 0.41 407 925 0.50 498 999 0.59 587 666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960

AIRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1016 0.51 505 1080 0.57 572 1139 0.64 637 1195 0.71 702 1249 0.77 765 1041 0.59 587 1104 0.67 662 1163 0.74 737 1219 0.81 811 1272 0.89 883 1066 0.68 674 1129 0.76 759 1188 0.85 843 1243 0.93 925 1296 1.01 1007 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 — — — 1147 0.98 972 1208 1.09 1086 — — — — — — — — — 1175 1.09 1086 — — — — — — — — — — — —

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

Table 17—Fan Performance 581B 036, 581C 036 — Vertical Discharge Units; High-Static Motor

IRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

IRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1016 0.51 505 1080 0.57 572 1139 0.64 637 1195 0.71 702 1249 0.77 765 1041 0.59 587 1104 0.67 662 1163 0.74 737 1219 0.81 811 1272 0.89 883 1066 0.68 674 1129 0.76 759 1188 0.85 843 1243 0.93 925 1296 1.01 1007 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 1346 1.28 1275 1147 0.98 972 1208 1.09 1086 1265 1.21 1199 1320 1.32 1310 1371 1.43 1419 1175 1.09 1086 1235 1.22 1209 1292 1.34 1332 1346 1.46 1452 1397 1.58 1572

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 680 to 1044 r pm. All other rpms require field-supplied

drive.

(Belt Drive)*

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 r pm. All other rpms require field-supplied

drive.

581B,C

Page 30

AIRFLOW

581B,C

Table 18—Fan Performance 581B 048, 581C 048 — Vertical Discharge Units; Standard Motor

IRFLOW

CFM

1200 1300 1400 1500 1600 1700 1800 1900 2000

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960 810 0.49 491 909 0.65 643 994 0.79 790 1070 0.94 932 1140 1.08 1070 847 0.57 567 943 0.73 730 1027 0.89 888 1101 1.05 1040 1170 1.20 1189 885 0.66 652 978 0.83 826 1060 1.00 994 1133 1.16 1157 — — — 923 0.75 745 1014 0.94 930 1093 1.11 1109 — — — — — — 962 0.85 847 1049 1.05 1043 — — — — — — — — —

IRFLOW

CFM

1200 1300 1400 1500 1600 1700 1800 1900 2000

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 — — — 1147 0.98 972 1208 1.09 1086 — — — — — — — — — 1175 1.09 1086 — — — — — — — — — — — —

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

(Belt Drive)*

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 770 to 1185 rpm. All other rpms require field-supplied drive.

Page 31

Table 19—Fan Performance 581B 048, 581C 048 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM 1200

1300 1400 1500 1600 1700 1800 1900 2000

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960 810 0.49 491 909 0.65 643 994 0.79 790 1070 0.94 932 1140 1.08 1070 847 0.57 567 943 0.73 730 1027 0.89 888 1101 1.05 1040 1170 1.20 1189 885 0.66 652 978 0.83 826 1060 1.00 994 1133 1.16 1157 1200 1.32 1316 923 0.75 745 1014 0.94 930 1093 1.11 1109 1165 1.29 1283 1231 1.46 1453 962 0.85 847 1049 1.05 1043 1127 1.24 1233 1198 1.42 1417 1263 1.61 1598

AIRFLOW

CFM

1200 1300 1400 1500 1600 1700 1800 1900 2000

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 1346 1.28 1275 1147 0.98 972 1208 1.09 1086 1265 1.21 1199 1320 1.32 1310 1371 1.43 1419 1175 1.09 1086 1235 1.22 1209 1292 1.34 1332 1346 1.46 1452 1397 1.58 1572 1204 1.21 1207 1263 1.35 1340 1320 1.48 1472 1373 1.61 1603 1424 1.74 1732 1233 1.34 1336 1292 1.49 1480 1348 1.63 1622 1401 1.77 1762 1451 1.91 1901 1262 1.48 1473 1321 1.64 1627 1376 1.79 1779 1428 1.94 1930 1479 2.09 2078 1293 1.63 1620 1350 1.79 1784 1405 1.96 1946 1457 2.12 2106 1506 2.28 2265 1323 1.79 1776 1380 1.96 1950 1434 2.13 2123 1486 2.31 2293 — — —

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 r pm. All other rpms require field-supplied

drive.

581B,C

Table 20—Fan Performance 581B 060, 581C 060 Single-Phase — Vertical Discharge Units;

AIRFLOW

CFM

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1600 1700 1800 1900 2000 2100 2200 2300

1007 0.75 663 1115 0.91 811 1208 1.08 957 1291 1.24 1101 — — — 1048 0.85 757 1153 1.03 913 1244 1.20 1066 — — — — — — 1090 0.97 859 1191 1.15 1023 — — — — — — — — — 1131 1.09 970 1230 1.29 1143 — — — — — — — — — 1173 1.23 1091 — — — — — — — — — — — —

2400 2500

AIRFLOW

CFM 1500

1600 1700

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1312 1.07 948 1380 1.20 1067 — — — — — — — — — 1342 1.18 1047 — — — — — — — — — — — — 1374 1.30 1153 — — — — — — — — — — — —

1800 1900 2000 2100 2200 2300 2400 2500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 1.30.

3. See general fan performance notes.

0.2 0.4 0.6 0.8 1.0

848 0.42 371 968 0.55 486 1069 0.68 600 1158 0.80 715 1238 0.94 831 887 0.49 433 1004 0.63 556 1103 0.76 678 1190 0.90 800 1269 1.04 922 927 0.57 502 1040 0.71 633 1137 0.86 763 1223 1.00 892 1302 1.15 1022 967 0.65 579 1077 0.81 718 1172 0.96 856 1257 1.12 993 1334 1.27 1130

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

1.2 1.4 1.6 1.8 2.0

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

Standard Motor (Belt Drive)*

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 to 1460 r pm. All other rpms require field-supplied

drive.

Page 32

Table 21—Fan Performance 581B 060, 581C 060 Three-Phase — Vertical Discharge Units;

AIRFLOW

Standard Motor (Belt Drive)*

581B,C

AIRFLOW

CFM

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

1007 0.75 663 1115 0.91 811 1208 1.08 957 1291 1.24 1101 1368 1.40 1246 1048 0.85 757 1153 1.03 913 1244 1.20 1066 1326 1.37 1219 1401 1.54 1371 1090 0.97 859 1191 1.15 1023 1281 1.33 1185 1361 1.51 1345 1435 1.69 1505 1131 1.09 970 1230 1.29 1143 1318 1.48 1313 1397 1.67 1481 1470 1.86 1649 1173 1.23 1091 1269 1.43 1273 1355 1.63 1451 1433 1.83 1627 1505 2.03 1803 1215 1.38 1223 1309 1.59 1413 1393 1.80 1600 1470 2.01 1784 1540 2.21 1967 1258 1.54 1365 1349 1.76 1564 1431 1.98 1759 1506 2.20 1951 — — —

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1312 1.07 948 1380 1.20 1067 1445 1.34 1189 1506 1.48 1312 1564 1.62 1437 1342 1.18 1047 1411 1.32 1173 1474 1.46 1300 1535 1.61 1429 1593 1.76 1560 1374 1.30 1153 1441 1.45 1286 1505 1.60 1420 1565 1.75 1555 1622 1.91 1692 1406 1.43 1268 1473 1.58 1407 1535 1.74 1548 1595 1.90 1690 1652 2.06 1833 1438 1.57 1391 1504 1.73 1537 1567 1.90 1685 1626 2.06 1833 1682 2.23 1983 1471 1.72 1523 1536 1.89 1677 1598 2.06 1831 1657 2.24 1986 — — — 1504 1.87 1665 1569 2.06 1825 1630 2.24 1986 — — — — — — 1538 2.04 1816 1602 2.23 1984 — — — — — — — — — 1572 2.23 1978 — — — — — — — — — — — —

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 to 1460 r pm. All other rpms require field-supplied

drive.

Table 22—Fan Performance 581B 060, 581C 060 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1312 1.07 948 1380 1.20 1067 1445 1.34 1189 1506 1.48 1312 1564 1.62 1437 1342 1.18 1047 1411 1.32 1173 1474 1.46 1300 1535 1.61 1429 1593 1.76 1560 1374 1.30 1153 1441 1.45 1286 1505 1.60 1420 1565 1.75 1555 1622 1.91 1692 1406 1.43 1268 1473 1.58 1407 1535 1.74 1548 1595 1.90 1690 1652 2.06 1833 1438 1.57 1391 1504 1.73 1537 1567 1.90 1685 1626 2.06 1833 1682 2.23 1983 1471 1.72 1523 1536 1.89 1677 1598 2.06 1831 1657 2.24 1986 1713 2.41 2142 1504 1.87 1665 1569 2.06 1825 1630 2.24 1986 1688 2.42 2149 1744 2.60 2312 1538 2.04 1816 1602 2.23 1984 1663 2.42 2152 1720 2.61 2321 1775 2.81 2491 1572 2.23 1978 1635 2.42 2153 1695 2.62 2328 1753 2.82 2504 — — — 1607 2.42 2150 1669 2.63 2332 1729 2.83 2515 — — — — — — 1642 2.63 2333 1704 2.84 2523 — — — — — — — — —

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 t o 1685 rpm. All other rpms require field-supplied drive.

Page 33

Table 23—Fan Performance 581C 072 — Vertical Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

1008 0.72 643 1112 0.91 805 1205 1.08 960 1289 1.25 1111 1366 1.42 1258 1049 0.82 731 1151 1.02 903 1241 1.20 1068 1323 1.38 1228 1399 1.56 1384 1091 0.93 827 1189 1.14 1008 1278 1.33 1183 1358 1.52 1353 1433 1.71 1519 1133 1.05 933 1229 1.26 1123 1315 1.47 1308 1393 1.67 1487 1467 1.87 1662 1176 1.18 1047 1268 1.40 1247 1352 1.62 1441 1429 1.84 1630 1501 2.04 1815 1218 1.32 1170 1308 1.55 1380 1390 1.78 1584 1466 2.01 1782 1537 2.23 1977 1261 1.47 1304 1349 1.72 1523 1429 1.96 1736 1503 2.19 1945 — — — 1305 1.63 1448 1390 1.89 1677 1468 2.14 1900 1540 2.38 2117 — — — 1348 1.80 1602 1431 2.07 1841 1507 2.33 2073 — — — — — — 1392 1.99 1768 1472 2.27 2016 — — — — — — — — — 1435 2.19 1945 — — — — — — — — — — — — 1479 2.40 2135 — — — — — — — — — — — —

AIRFLOW

CFM

1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

0.2 0.4 0.6 0.8 1.0

967 0.63 563 1075 0.80 715 1170 0.97 861 1255 1.13 1002 1333 1.28 1139

1.2 1.4 1.6 1.8 2.0

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1119 t o 1585 rpm. All other rpms require field-supplied drive.

581B,C

Page 34

Table 24—Fan Performance 581C 072 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

(Cfm)

581B,C

AIRFLOW

CFM

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

1008 0.72 643 1112 0.91 805 1205 1.08 960 1289 1.25 1111 1366 1.42 1258 1049 0.82 731 1151 1.02 903 1241 1.20 1068 1323 1.38 1228 1399 1.56 1384 1091 0.93 827 1189 1.14 1008 1278 1.33 1183 1358 1.52 1353 1433 1.71 1519 1133 1.05 933 1229 1.26 1123 1315 1.47 1308 1393 1.67 1487 1467 1.87 1662 1176 1.18 1047 1268 1.40 1247 1352 1.62 1441 1429 1.84 1630 1501 2.04 1815 1218 1.32 1170 1308 1.55 1380 1390 1.78 1584 1466 2.01 1782 1537 2.23 1977 1261 1.47 1304 1349 1.72 1523 1429 1.96 1736 1503 2.19 1945 1572 2.42 2149 1305 1.63 1448 1390 1.89 1677 1468 2.14 1900 1540 2.38 2117 1608 2.62 2331 1348 1.80 1602 1431 2.07 1841 1507 2.33 2073 1578 2.59 2301 1645 2.84 2524 1392 1.99 1768 1472 2.27 2016 1547 2.54 2258 1616 2.81 2495 — — — 1435 2.19 1945 1514 2.48 2203 1587 2.76 2455 — — — — — — 1479 2.40 2135 1556 2.70 2402 — — — — — — — — —

AIRFLOW

CFM 1800

1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See general fan performance notes.

0.2 0.4 0.6 0.8 1.0

967 0.63 563 1075 0.80 715 1170 0.97 861 1255 1.13 1002 1333 1.28 1139

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1406 1.43 1273 1475 1.58 1403 1540 1.72 1531 1601 1.87 1657 1660 2.00 1780 1438 1.58 1401 1505 1.73 1541 1569 1.89 1678 1630 2.04 1813 1689 2.19 1945 1470 1.73 1537 1537 1.90 1686 1600 2.06 1833 1660 2.23 1977 1718 2.38 2118 1502 1.89 1681 1568 2.07 1840 1631 2.25 1996 1690 2.42 2149 1747 2.59 2300 1535 2.06 1834 1600 2.25 2002 1662 2.44 2167 1721 2.62 2330 1778 2.80 2490 1569 2.25 1996 1633 2.45 2174 1694 2.64 2348 1752 2.84 2520 — — — 1603 2.44 2167 1666 2.65 2355 1727 2.86 2539 — — — — — — 1638 2.64 2349 1700 2.87 2546 — — — — — — — — — 1673 2.86 2541 — — — — — — — — — — — —

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 t o 1685 rpm. All other rpms require field-supplied drive.

Table 25—Fan Performance 581B 024 — Horizontal Discharge Units; Standard Motor (Belt Drive)**

AIRFLOW

600 700 800 900

1000

0.1 0.2 0.4 0.6 0.8 1.0

Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp

490 0.08 521 0.08 597 0.14 703 0.21 788 0.29 519 0.09 557 0.09 623 0.16 729 0.24 816 0.32 537 0.10 582 0.12 650 0.19 751 0.27 845 0.37 560 0.13 610 0.14 681 0.22 783 0.32 870 0.42 589 0.15 640 0.16 707 0.26 808 0.36 894 0.47

EXTERNAL STATIC PRESSURE (in. wg)

Rpm Bhp

868 0.37 892 0.41 927 0.47 947 0.53 971 0.58

Page 35

Table 26—Fan Performance 581B 036, 581C 036 — Horizontal Discharge Units; Standard Motor

AIRFLOW

(Belt Drive)*

AIRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

553 0.14 134 681 0.22 221 782 0.32 316 870 0.42 417 948 0.53 526 582 0.16 163 707 0.26 257 807 0.36 358 894 0.47 466 971 0.58 580 612 0.20 196 734 0.30 297 833 0.41 405 919 0.52 519 995 0.64 639 643 0.23 234 762 0.34 343 859 0.46 458 944 0.58 579 1020 0.71 705 675 0.28 277 790 0.40 394 886 0.52 517 969 0.65 644 1044 0.78 777 707 0.33 326 819 0.45 452 913 0.58 581 996 0.72 716 1070 0.86 855 740 0.38 382 849 0.52 515 941 0.66 653 1023 0.80 795 1096 0.95 941

AIRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1019 0.64 640 1084 0.76 760 1146 0.89 885 1203 1.02 1016 1258 1.16 1152 1042 0.70 700 1107 0.83 825 1168 0.96 956 1225 1.10 1091 — — — 1065 0.77 765 1130 0.90 896 1190 1.04 1032 1247 1.18 1173 — — — 1089 0.84 837 1153 0.98 974 1213 1.12 1115 — — — — — — 1113 0.92 915 1177 1.06 1058 — — — — — — — — — 1138 1.01 1000 1201 1.15 1149 — — — — — — — — — 1163 1.10 1092 — — — — — — — — — — — —

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

Table 27—Fan Performance 581B 036, 581C 036 — Horizontal Discharge Units; High-Static Motor

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 680 t o 1044 rpm. All other rpms require field-supplied drive.

(Belt Drive)*

581B,C

AIRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

AIRFLOW

CFM

900 1000 1100 1200 1300 1400 1500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1019 0.64 640 1084 0.76 760 1146 0.89 885 1203 1.02 1016 1258 1.16 1152 1042 0.70 700 1107 0.83 825 1168 0.96 956 1225 1.10 1091 1279 1.24 1232 1065 0.77 765 1130 0.90 896 1190 1.04 1032 1247 1.18 1173 1301 1.33 1319 1089 0.84 837 1153 0.98 974 1213 1.12 1115 1270 1.27 1262 1324 1.42 1413 1113 0.92 915 1177 1.06 1058 1237 1.21 1205 1293 1.36 1358 1347 1.52 1514 1138 1.01 1000 1201 1.15 1149 1261 1.31 1303 1317 1.47 1461 1370 1.63 1623 1163 1.10 1092 1226 1.25 1247 1285 1.41 1407 1341 1.58 1571 1394 1.75 1740

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 t o 1455 rpm. All other rpms require field-supplied drive.

Page 36

Table 28—Fan Performance 581B 048, 581C 048 — Horizontal Discharge Units; Standard Motor

AIRFLOW

(Belt Drive)*

581B,C

AIRFLOW

CFM 1200

1300 1400 1500 1600 1700 1800 1900 2000

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

643 0.23 234 762 0.34 343 859 0.46 458 944 0.58 579 1020 0.71 705 675 0.28 277 790 0.40 394 886 0.52 517 969 0.65 644 1044 0.78 777 707 0.33 326 819 0.45 452 913 0.58 581 996 0.72 716 1070 0.86 855 740 0.38 382 849 0.52 515 941 0.66 653 1023 0.80 795 1096 0.95 941 773 0.45 444 879 0.59 586 970 0.73 731 1050 0.88 880 1123 1.04 1034 807 0.52 513 910 0.67 663 999 0.82 817 1078 0.98 973 1150 1.14 1134 841 0.59 589 942 0.75 749 1029 0.91 910 1106 1.08 1074 — — — 875 0.68 674 974 0.85 842 1059 1.02 1012 1135 1.19 1184 — — — 910 0.77 767 1006 0.95 944 1090 1.13 1122 — — — — — —

AIRFLOW

CFM 1200

1300 1400 1500 1600 1700 1800 1900 2000

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See general fan performance notes.

0.2 0.4 0.6 0.8 1.0

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1089 0.84 837 1153 0.98 974 1213 1.12 1115 — — — — — — 1113 0.92 915 1177 1.06 1058 — — — — — — — — — 1138 1.01 1000 1201 1.15 1149 — — — — — — — — — 1163 1.10 1092 — — — — — — — — — — — — 1189 1.20 1191 — — — — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 770 t o 1185 rpm. All other rpms require field-supplied drive.

AIRFLOW

CFM 1200

1300 1400 1500 1600 1700 1800 1900 2000

AIRFLOW

CFM 1200

1300 1400 1500 1600 1700 1800 1900 2000

Table 29—Fan Performance 581B 048, 581C 048 — Horizontal Discharge Units; High-Static Motor

(Belt Drive)*

EXTERNAL STATIC PRESSURE (in. wg)

0.2 0.4 0.6 0.8 1.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

643 0.23 234 762 0.34 343 859 0.46 458 944 0.58 579 1020 0.71 705 675 0.28 277 790 0.40 394 886 0.52 517 969 0.65 644 1044 0.78 777 707 0.33 326 819 0.45 452 913 0.58 581 996 0.72 716 1070 0.86 855 740 0.38 382 849 0.52 515 941 0.66 653 1023 0.80 795 1096 0.95 941 773 0.45 444 879 0.59 586 970 0.73 731 1050 0.88 880 1123 1.04 1034 807 0.52 513 910 0.67 663 999 0.82 817 1078 0.98 973 1150 1.14 1134 841 0.59 589 942 0.75 749 1029 0.91 910 1106 1.08 1074 1177 1.25 1242 875 0.68 674 974 0.85 842 1059 1.02 1012 1135 1.19 1184 1205 1.37 1360 910 0.77 767 1006 0.95 944 1090 1.13 1122 1165 1.31 1302 1234 1.49 1485

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1089 0.84 837 1153 0.98 974 1213 1.12 1115 1270 1.27 1262 1324 1.42 1413 1113 0.92 915 1177 1.06 1058 1237 1.21 1205 1293 1.36 1358 1347 1.52 1514 1138 1.01 1000 1201 1.15 1149 1261 1.31 1303 1317 1.47 1461 1370 1.63 1623 1163 1.10 1092 1226 1.25 1247 1285 1.41 1407 1341 1.58 1571 1394 1.75 1740 1189 1.20 1191 1252 1.36 1353 1310 1.53 1520 1365 1.70 1690 1418 1.87 1865 1216 1.31 1299 1277 1.48 1468 1335 1.65 1640 1390 1.83 1817 1442 2.01 1998 1242 1.42 1414 1303 1.60 1590 1361 1.78 1770 1415 1.96 1953 1467 2.15 2140 1270 1.55 1538 1330 1.73 1721 1387 1.92 1908 1441 2.11 2098 1493 2.30 2292 1297 1.68 1672 1357 1.87 1862 1414 2.07 2055 1467 2.26 2252 — — —

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 t o 1455 rpm. All other rpms require field-supplied drive.

Page 37

Table 30—Fan Performance 581B 060, 581C 060 Single-Phase — Horizontal Discharge Units;

AIRFLOW

Standard Motor (Belt Drive)*

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

AIRFLOW

CFM

1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

0.2 0.4 0.6 0.8 1.0

EXTERNAL STATIC PRESSURE (in. wg)

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

800 0.39 350 904 0.49 438 999 0.60 535 1087 0.72 640 1169 0.85 753 839 0.46 412 938 0.57 505 1030 0.68 605 1115 0.80 714 1195 0.93 829 879 0.54 483 974 0.65 580 1062 0.77 684 1144 0.90 796 1221 1.03 914 919 0.63 561 1010 0.75 663 1095 0.87 771 1174 1.00 886 1250 1.14 1008

960 0.73 648 1047 0.85 754 1129 0.98 867 1206 1.11 986 1279 1.25 1111 1001 0.84 744 1085 0.96 855 1163 1.09 972 1238 1.23 1095 — — — 1043 0.96 850 1123 1.09 965 1199 1.22 1086 — — — — — — 1085 1.09 966 1162 1.22 1086 — — — — — — — — — 1127 1.23 1092 — — — — — — — — — — — —

— — — — — — — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1247 0.98 873 1320 1.13 1002 1390 1.28 1137 — — — — — — 1270 1.07 952 1342 1.22 1083 — — — — — — — — — 1295 1.17 1040 — — — — — — — — — — — — 1321 1.28 1137 — — — — — — — — — — — —

581B,C

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 1.30.

3. See general fan performance notes.

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 t o 1460 rpm. All other rpms require field-supplied drive.

Page 38

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

Table 31—Fan Performance 581B 060, 581C 060 Three-Phase — Horizontal Discharge Units;

Standard Motor (Belt Drive)*

EXTERNAL STATIC PRESSURE (in. wg)

0.2 0.4 0.6 0.8 1.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

800 0.39 350 904 0.49 438 999 0.60 535 1087 0.72 640 1169 0.85 753

839 0.46 412 938 0.57 505 1030 0.68 605 1115 0.80 714 1195 0.93 829

879 0.54 483 974 0.65 580 1062 0.77 684 1144 0.90 796 1221 1.03 914

919 0.63 561 1010 0.75 663 1095 0.87 771 1174 1.00 886 1250 1.14 1008

960 0.73 648 1047 0.85 754 1129 0.98 867 1206 1.11 986 1279 1.25 1111 1001 0.84 744 1085 0.96 855 1163 1.09 972 1238 1.23 1095 1309 1.38 1224 1043 0.96 850 1123 1.09 965 1199 1.22 1086 1271 1.37 1213 1340 1.52 1346 1085 1.09 966 1162 1.22 1086 1235 1.36 1211 1305 1.51 1342 1372 1.67 1479 1127 1.23 1092 1201 1.37 1217 1272 1.52 1347 1340 1.67 1482 1405 1.83 1623 1169 1.38 1229 1241 1.53 1359 1310 1.68 1493 1375 1.84 1633 1439 2.00 1778 1212 1.55 1378 1281 1.70 1513 1348 1.86 1652 1412 2.02 1796 1473 2.19 1945

581B,C

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1247 0.98 873 1320 1.13 1002 1390 1.28 1137 1457 1.44 1280 1522 1.61 1430

1270 1.07 952 1342 1.22 1083 1411 1.37 1221 1476 1.54 1365 1540 1.71 1517

1295 1.17 1040 1365 1.32 1173 1432 1.48 1313 1497 1.64 1459 1559 1.82 1612

1321 1.28 1137 1390 1.43 1273 1455 1.59 1415 1518 1.76 1563 1579 1.93 1718

1348 1.40 1243 1415 1.56 1381 1479 1.72 1526 1541 1.89 1677 1601 2.06 1834

1377 1.53 1359 1442 1.69 1500 1505 1.86 1648 1565 2.03 1801 1624 2.21 1961

1406 1.67 1485 1470 1.83 1629 1531 2.00 1780 1591 2.18 1936 1648 2.36 2098

1437 1.83 1621 1499 1.99 1769 1559 2.16 1923 1617 2.34 2082 — — —

1468 1.99 1769 1529 2.16 1920 1587 2.34 2077 — — — — — —

1500 2.17 1928 1559 2.35 2083 — — — — — — — — —

1533 2.36 2098 — — — — — — — — — — — —

1.2 1.4 1.6 1.8 2.0

Table 32—Fan Performance 581B 060, 581C 060 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1001 0.84 744 1085 0.96 855 1163 1.09 972 1238 1.23 1095 1309 1.38 1224 1043 0.96 850 1123 1.09 965 1199 1.22 1086 1271 1.37 1213 1340 1.52 1346 1085 1.09 966 1162 1.22 1086 1235 1.36 1211 1305 1.51 1342 1372 1.67 1479 1127 1.23 1092 1201 1.37 1217 1272 1.52 1347 1340 1.67 1482 1405 1.83 1623 1169 1.38 1229 1241 1.53 1359 1310 1.68 1493 1375 1.84 1633 1439 2.00 1778 1212 1.55 1378 1281 1.70 1513 1348 1.86 1652 1412 2.02 1796 1473 2.19 1945

0.2 0.4 0.6 0.8 1.0

800 0.39 350 904 0.49 438 999 0.60 535 1087 0.72 640 1169 0.85 753

839 0.46 412 938 0.57 505 1030 0.68 605 1115 0.80 714 1195 0.93 829

879 0.54 483 974 0.65 580 1062 0.77 684 1144 0.90 796 1221 1.03 914

919 0.63 561 1010 0.75 663 1095 0.87 771 1174 1.00 886 1250 1.14 1008

960 0.73 648 1047 0.85 754 1129 0.98 867 1206 1.11 986 1279 1.25 1111

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 t o 1460 rpm. All other rpms require field-supplied drive.

EXTERNAL STATIC PRESSURE (in. wg)

AIRFLOW

CFM 1500

1600 1700 1800 1900 2000 2100 2200 2300 2400 2500

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See general fan performance notes.

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1247 0.98 873 1320 1.13 1002 1390 1.28 1137 1457 1.44 1280 1522 1.61 1430 1270 1.07 952 1342 1.22 1083 1411 1.37 1221 1476 1.54 1365 1540 1.71 1517 1295 1.17 1040 1365 1.32 1173 1432 1.48 1313 1497 1.64 1459 1559 1.82 1612 1321 1.28 1137 1390 1.43 1273 1455 1.59 1415 1518 1.76 1563 1579 1.93 1718 1348 1.40 1243 1415 1.56 1381 1479 1.72 1526 1541 1.89 1677 1601 2.06 1834 1377 1.53 1359 1442 1.69 1500 1505 1.86 1648 1565 2.03 1801 1624 2.21 1961 1406 1.67 1485 1470 1.83 1629 1531 2.00 1780 1591 2.18 1936 1648 2.36 2098 1437 1.83 1621 1499 1.99 1769 1559 2.16 1923 1617 2.34 2082 1673 2.53 2246 1468 1.99 1769 1529 2.16 1920 1587 2.34 2077 1644 2.52 2239 1699 2.71 2406 1500 2.17 1928 1559 2.35 2083 1616 2.53 2243 1672 2.71 2408 1726 2.90 2579 1533 2.36 2098 1591 2.54 2257 1647 2.73 2421 — — — — — —

1.2 1.4 1.6 1.8 2.0

EXTERNAL STATIC PRESSURE (in. wg)

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 t o 1685 rpm. All other rpms require field-supplied drive.

Page 39

Table 33—Fan Performance 581B 072 — Horizontal Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM 1800

1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

AIRFLOW

CFM

1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

0.2 0.4 0.6 0.8 1.0

EXTERNAL STATIC PRESSURE (in. wg)

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

913 0.64 569 1010 0.80 715 1098 0.98 869 1178 1.16 1032 1252 1.35 1203

952 0.73 652 1046 0.91 805 1131 1.09 965 1210 1.28 1134 1282 1.48 1311

992 0.84 744 1083 1.02 903 1166 1.21 1070 1242 1.40 1245 1313 1.61 1427 1032 0.95 844 1120 1.14 1010 1200 1.33 1184 1275 1.54 1365 1345 1.75 1553 1073 1.07 954 1158 1.27 1127 1236 1.47 1307 1308 1.68 1495 1377 1.90 1689 1114 1.21 1074 1196 1.41 1254 1272 1.62 1440 1343 1.84 1634 1409 2.07 1834 1155 1.36 1204 1234 1.57 1391 1308 1.78 1584 1377 2.01 1784 1443 2.24 1990 1196 1.51 1345 1273 1.73 1538 1345 1.96 1738 1412 2.19 1945 — — — 1238 1.69 1497 1312 1.91 1697 1382 2.14 1904 1448 2.38 2117 — — — 1280 1.87 1660 1352 2.10 1867 1420 2.34 2081 — — — — — — 1322 2.07 1835 1392 2.31 2050 — — — — — — — — — 1364 2.28 2023 — — — — — — — — — — — —

— — — — — — — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1322 1.56 1382 1388 1.77 1568 1451 1.98 1762 1510 2.21 1962 — — — 1351 1.68 1495 1416 1.90 1686 1477 2.12 1885 1536 2.35 2090 — — — 1380 1.82 1617 1444 2.04 1814 1505 2.27 2017 — — — — — — 1411 1.97 1748 1473 2.20 1950 — — — — — — — — — 1441 2.13 1890 1503 2.36 2097 — — — — — — — — — 1473 2.30 2041 — — — — — — — — — — — —

581B,C

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See general fan performance notes.

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1119 t o 1585 rpm. All other rpms require field-supplied drive.

Page 40

Table 34—Fan Performance 581B 072 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

581B,C

AIRFLOW

CFM 1800

1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

AIRFLOW

CFM 1800

1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000

0.2 0.4 0.6 0.8 1.0

EXTERNAL STATIC PRESSURE (in. wg)

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

913 0.64 569 1010 0.80 715 1098 0.98 869 1178 1.16 1032 1252 1.35 1203 952 0.73 652 1046 0.91 805 1131 1.09 965 1210 1.28 1134 1282 1.48 1311

992 0.84 744 1083 1.02 903 1166 1.21 1070 1242 1.40 1245 1313 1.61 1427 1032 0.95 844 1120 1.14 1010 1200 1.33 1184 1275 1.54 1365 1345 1.75 1553 1073 1.07 954 1158 1.27 1127 1236 1.47 1307 1308 1.68 1495 1377 1.90 1689 1114 1.21 1074 1196 1.41 1254 1272 1.62 1440 1343 1.84 1634 1409 2.07 1834 1155 1.36 1204 1234 1.57 1391 1308 1.78 1584 1377 2.01 1784 1443 2.24 1990 1196 1.51 1345 1273 1.73 1538 1345 1.96 1738 1412 2.19 1945 1477 2.43 2157 1238 1.69 1497 1312 1.91 1697 1382 2.14 1904 1448 2.38 2117 1511 2.63 2335 1280 1.87 1660 1352 2.10 1867 1420 2.34 2081 1484 2.59 2300 1546 2.84 2526 1322 2.07 1835 1392 2.31 2050 1458 2.56 2270 1521 2.81 2496 — — — 1364 2.28 2023 1432 2.53 2245 1496 2.78 2472 — — — — — — 1406 2.50 2224 1472 2.76 2452 — — — — — — — — —

EXTERNAL STATIC PRESSURE (in. wg)

1.2 1.4 1.6 1.8 2.0

Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts

1322 1.56 1382 1388 1.77 1568 1451 1.98 1762 1510 2.21 1962 1568 2.44 2169 1351 1.68 1495 1416 1.90 1686 1477 2.12 1885 1536 2.35 2090 1593 2.59 2302 1380 1.82 1617 1444 2.04 1814 1505 2.27 2017 1563 2.51 2227 1619 2.75 2443 1411 1.97 1748 1473 2.20 1950 1533 2.43 2159 1590 2.67 2374 — — — 1441 2.13 1890 1503 2.36 2097 1562 2.60 2311 1618 2.85 2532 — — — 1473 2.30 2041 1533 2.54 2254 1591 2.79 2474 — — — — — — 1505 2.48 2203 1564 2.73 2422 — — — — — — — — — 1537 2.68 2376 — — — — — — — — — — — — 1571 2.88 2560 — — — — — — — — — — — —

— — — — — — — — — — — — — — —

NOTES:

1. Grey cells indicate field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See general fan performance notes.

LEGEND

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 t o 1685 rpm. All other rpms require field-supplied drive.

Page 41

PRE-START-UP

FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage:

1. Follow recognized safety practices and wear protective goggles when checking or servicing a refrigerant system.

2. Do not operate the compressor or provide any electric power to the unit unless the compressor terminal cover is in place and secured.

3. Do not remove the compressor terminal cover until all electrical sources are disconnected and tagged with lockout tags.

4. Relieve all pressure from the system before touching or disturbing anything inside the terminal box if a refrigerant leak is suspected around the compressor terminals. Use accepted methods to recover the refrigerant.

5. Never attempt to repair a soldered connection while the refrigerant system is under pressure.

6. Do not use a torch to remove any component. The system contains oil and refrigerant under pressure. To remove a component, wear protective goggles and proceed as follows:

a. Shut off electrical power to the unit and tag

b. Recover refrigerant to relieve all pressure

c. Cut component connection tubing with a

d. Carefully unsweat the remaining tubing

Proceed as follows to inspect and prepare the unit for initial start-up:

1. Remove all access panels.

2. Read and follow instructions on all WARNING, CAUTION, and INFORMATION labels attached to, or shipped with, unit.

3. Make the following inspections:

a. Inspect for shipping and handling damages such as

broken lines, loose parts, or disconnected wires, etc.

b. Inspectfor oil at all refrigerant tubing connectionsand on

unit base. Detecting oil generally indicates a refrigerant leak. Leak-test all refrigerant tubing connections using electronic leak detector, halide torch, or liquid-soap solution.

c. Inspect all field-wiring and factory-wiring connections.

Be sure that connectionsarecompleted and tight. Be sure that wires are not in contact with refrigerant tubing or sharp edges.

d. Inspect coil fins. If damaged during shipping and

handling, carefully straighten fins with a fin comb.

4. Verify the following conditions:

a. Make sure that condenser-fan blade are correctly

positioned in fan orifice. See Condenser-Fan Adjustment section for more details.

b. Make sure that air filter(s) is in place.

WARNING

disconnect.

from the system using both high-pressure

and low-pressure ports.

tubing cutter, and remove the component

from the unit.

stubs when necessary. Oil can ignite when

exposed to a torch flame.

c. Make sure that condensate drain trap is filled with water

to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose parts

have been removed.

START-UP

Unit Preparation

Make sure that the unit has been installed in accordance with installation instructions and applicable codes.

Gas Piping

Check gas piping for leaks.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Disconnect gas piping from unit when leak testing at pressure greater than psig will cause gas valve damage resulting in hazardous condition. If gas valve is subjected to pressure greater

than

/2psig, it must be replaced before use. When

pressure testing field-supplied gas piping at pressures of

/2psig or less, a unit connected to such piping must be

isolated by manually closing the gas valve.

Return--Air Filters

Make sure the correct filters are installed in the unit (See Table 1 or 2). Do not operate the unit without return-air filters.

Outdoor--Air Inlet Screens

Outdoor-air inlet screen(s) must be in place before operating the unit.

Compressor Mounting

Compressors are internally spring mounted. Do not loosen or remove the compressor holddown bolts.

Internal Wiring

Check all electrical connections in unit control boxes; tighten them as required.

Refrigerant Service Ports

Each unit system has 4 Schrader--type service ports: one on the suction line, one on the liquid line, and 2 on the compressor discharge line. Be sure that caps on the ports are tight. Two additional Schrader valves are located under the high-- pressure and low--pressure switches, respectively.

High Flow Refrigerant Valves

Two high flow valves are located on the hot gas tube coming out of the compressor and the suction tube going into the compressor. Large black plastic caps identify these valves. These valves have O-- rings inside which screw the cap onto a brass body to prevent leaks. No field access to these valves is available at this time. Ensure the plastic caps remain on the valves and are tight or the possibility of refrigerant leakage could occur.

WARNING

/2psig. Pressures greater than1/

581B,C

Page 42

Compressor Rotation

150,000BTUH

Natural

Liqui

Natural

Liqui

Gas

Propane

Gas

Propane

Orifice

On 3-phase units be certain that the compressor is rotating in the proper direction. To determine whether or not compressor is rotating in the proper direction:

1. Connect the service gauges to suction and discharge pressure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge pressure should rise, as is normal on any start-up.

If the suction pressure does not drop and the discharge pressure does not rise to normal levels:

1. Note that the indoor fan (006 and 007 three-phase units only) is probably also rotating in the wrong direction.

2. Turn off power to the unit and tag disconnect.

3. Reverse any two of the unit power leads.

4. Turn on power to the unit and energize the compressor.

The suction and discharge pressure levels should now move to their normal start-up levels.

581B,C

NOTE: When the compressor is rotating in the wrong direction, the unit makes more noise and does not provide cooling.

Cooling

Set the space thermostat to the OFF position. Set the system selector switch at COOL position and the fan switch at AUTO position. Adjust the thermostat to a setting below room temperature. The compressor starts when contactor closes.

Check the unit charge. Refer to Refrigerant Charge section. Reset the thermostat at a position above room temperature. The

compressor will shut off. Evaporator fan will shut off after a 30--second delay.

To Shut Off Unit -- Set the system selector switch at OFF position. Resetting the thermostat at a position above room temperature shuts off the unit temporarily until the space temperature exceeds the thermostat setting. Units are equipped with a Cycle-LOC protection device. The unit shuts down on any safety trip and remains off; an indicator light on the thermostat comes on. Check the reason for the safety trip.

Main Burners

Main burners are factory set and should require no adjustment. TO CHECK ignition of main burners and heating controls, move

thermostat set point above room temperature and verify that the burners light and evaporator fan is energized. Check heating effect, then lower the thermostat setting below the room temperature and verify that the burners and evaporator fan turn off.

Refer to Tables 35 and 36 for the correct orifice to use at high altitudes.

Table 35—Altitude Compensation*

581B 036--072, 581C 024-- 060 Standard Units

72,000 AND

115,000 BTUH

ELE

TION

(ft)

0-2,000

2,000 3,000 4,000 5,000 6,000 7,000 8,000

9,000 10,000 11,000 12,000 13,000 14,000

*As the height above sea level increases, there is less oxygen per cubic

foot of air. Therefore, heat input rate should be reduced at higher altitudes.

†Orifices available through your Bryant distributor.

NOMIN

Natural Liquid Natural Liquid

Gas

Orifice

Size†

LINPUT

Propane

Orifice

Size†

33 43 30 37 36 44 31 39 36 45 31 40 37 45 32 41 38 46 32 42 40 47 34 43 41 48 35 43 42 49 36 44 43 50 37 45 44 50 39 46 45 51 41 47 46 52 42 48 47 52 43 49 48 53 44 50

150,000 BTUH

NOMINAL INPUT

Gas

Orifice

Size†

Propane

Orifice

Size†

Table 36—Altitude Compensation* —

581B 036--072, 581C 024-- 060 Low NOx Units

60,000 AND

90,000 BTUH

ELE

TION

(ft)

0-2,000

2,000 3,000 4,000 5,000 6,000 7,000 8,000

9,000 10,000 11,000 12,000 13,000 14,000

*As the height above sea level increases, there is less oxygen per cubic

foot of air. Therefore, the input rate should be reduced at higher altitudes.

†Orifices are available through your local Bryant distributor.

NOMINAL INPUT

Natural

Gas

Orifice

Size†

38 45 32 42 40 47 33 43 41 48 35 43 42 49 36 44 43 49 37 45 43 50 38 45 44 50 39 46 45 51 41 47 46 52 42 48 47 52 43 49 48 53 44 50 49 53 44 51 50 54 46 52 51 54 47 52

Liquid

Propane

Orifice

Size†

120,000 BTUH

NOMINAL INPUT

Natural

Gas

Orifice

Size

Propane

Liquid

Orifice

Size†

Page 43

Heating

1. Purge gas supply line of air by opening union ahead of the gas valve. If gas odor is detected, tighten union and wait 5 minutes before proceeding.

2. Turn on electrical supply and manual gas valve.

3. Set system switch selector at HEAT position and fan switch at AUTO or ON position. Set heating temperature lever above room temperature.

4. The induced-draft motor will start.

5. After a call for heating, the main burners should light within 5 seconds. If the burner does not light, then there is a 22-second delay before another 5-second try. If the burner still does not light, the time delay is repeated. If the burner does not light within 15 minutes, there is a lockout. To reset the control, break the 24 v power to W1.

6. The evaporator-fan motor will turn on 45 seconds after burner ignition.

7. The evaporator-fan motor will turn off in 45 seconds after the thermostat temperature is satisfied.

8. Adjust airflow to obtain a temperature rise within the range specified on the unit nameplate.

NOTE: The default value for the evaporator-fan motor on/off delay is 45 seconds. The Integrated Gas Unit Controller (IGC) modifies this value when abnormal limit switch cycles occur. Based upon unit operating conditions, the on delay can be reduced to 0 seconds and the off delay can be extended to 180 seconds. When one flash of the LED (light-emitting diode) is observed, the evaporator-fan on/off delay has been modified.

If the limit switch trips at the start of the heating cycle during the evaporator on delay, the time period of the on delay for the next cycle will be 5 seconds less than the time at which the switch tripped. (Example: If the limit switch trips at 30 seconds, the evaporator-fan on delay for the next cycle will occur at 25 seconds.) To prevent short-cycling, a 5-second reduction will only occur if a minimum of 10 minutes has elapsed since the last call for heating.

The evaporator-fan off delay can also be modified. Once the call for heating has ended, there is a 10-minute period during which the modification can occur. If the limit switch trips during this period, the evaporator-fan off delay will increase by 15 seconds. A maximum of 9 trips can occur, extending the evaporator-fan off delay to 180 seconds.

To restore the original default value, reset the power to the unit. To Shut Off Unit —Set system selector switch at off position.

Resetting heating selector lever below room temperature will temporarily shut unit off until space temperature falls below thermostat setting.

Safety Relief

A soft solder joint at the suction line fitting provides pressure relief under abnormal temperature and pressure conditions.

Ventilation (Continuous Fan)

Set fan and system selector switches at ON and OFF positions, respectively. Evaporator fan operates continuously to provide constant air circulation. When the evaporator--fan selector switch is turned to the OFF position, there is a 30--second delay before the fan turns off.

Operating Sequence

Cooling -- Units Without Economizer

When thermostat calls for cooling, terminals G and Y1 are energized. The indoor-fan contactor (IFC), reversing valve solenoid (RVS) and compressor contactor are energized and indoor-fan motor, compressor, and outdoor fan starts. The outdoor fan motor runs continuously while unit is cooling.

Heating -- Units Without

When the thermostat calls for heating, terminal W1 is energized. To prevent thermostat short--cycling, the unit is locked into the Heating mode for at least 1 minute when W1 is energized. The induced--draft motor is energized and the burner ignition sequence begins. The indoor (evaporator) fan motor (IFM) is energized 45 seconds after a flame is ignited. On units equipped for two stages of heat, when additional heat is needed, W2 is energized and the high--fire solenoid on the main gas valve (MGV) is energized. When the thermostat is satisfied and W1 is deenergized, the IFM stops after a 45--second time--off delay.

Cooling -- Units With Economi$er

When free cooling is not available, the compressors will be controlled by the zone thermostat. When free cooling is available, the outdoor-air damper is modulated by the EconoMi$er IV control to provide a 50_ to 55_F supply-air temperature into the zone. As the supply-air temperature fluctuates above 55_ or below 50_F, the dampers will be modulated (open or close) to bring the supply-air temperature back within the set point limits.

Integrated EconoMi$er IV operation on single-stage units requires a 2-stage thermostat (Y1 and Y2).

For EconoMi$er IV operation, there must be a thermostat call for the fan (G). This will move the damper to its minimum position during the occupied mode.

If the increase in cooling capacity causes the supply--air temperature to drop below 45_F, then the outdoor-- air damper position will be fully closed. If the supply --air temperature continues to fall, the outdoor--air damper will close. Control returns to normal once the supply--air temperature rises above 48_F.

If optional power exhaust is installed, as the outdoor--air damper opens and closes, the power exhaust fans will be energized and deenergized.

If field--installed accessory CO EconoMi$er IV control, a demand controlled ventilation strategy will begin to operate. As the CO above the CO will be increased proportionally. As the CO because of the increase in fresh air, the outdoor--air damper will be proportionally closed. Damper position will follow the higher demand condition from DCV mode or free cooling mode.

Damper movement from full closed to full open (or vice versa) will take between 1--1/2 and 2--1/2 minutes.

If free cooling can be used as determined from the appropriate changeover command (switch, dry bulb, enthalpy curve, differential dry bulb, or differential enthalpy), a call for cooling (Y1 closes at the thermostat) will cause the control to modulate the dampers open to maintain the supply air temperature set point at 50_ to 55_F.

As the supply air temperature drops below the set point range of 50_ to 55_F, the control will modulate the outdoor--air dampers closed to maintain the proper supply--air temperature.

set point, the minimum position of the damper

Economizer

sensors are connected to the

level in the zone increases

level decreases

581B,C

Page 44

Heating -- Units With Economi$er

When the room temperature calls for heat, the heating controls are energized as described in the Heating, Units Without Economizer section. During the occupied mode, whenever the indoor fan contactor is energized, the economizer damper moves to the minimum position.

Units With Perfect Humidity Dehumidification

System

 Adaptive

Normal Design Operation

When the rooftop operates under the normal sequence of operation, the compressors will cycle to maintain indoor conditions. (See Fig. 44.)

The Perfect Humidity adaptive dehumidification system includes a factory-installed Motormaster low ambient control to keep the head and suction pressure high, allowing normal design cooling mode operation down to 0F.

Subcooling Mode

When subcooling mode is initiated, this will energize (close) the liquid line solenoid valve (LLSV) forcing the hot liquid

581B,C

refrigerant to enter into the subcooling coil. (See Fig. 45.) As the hot liquid refrigerant passes through the subcooling/ reheat

dehumidification coil, it is exposed to the cold supply airflow coming through the evaporator coil. The liquid is further subcooled to a temperature approaching the evaporator leaving-air temperature. The liquid then enters a thermostatic expansion valve (TXV) where the liquid drops to a lower pressure. The TXV does not have a pressure drop great enough to change the liquid to a 2-phase fluid, so the liquid then enters the Acutrol device at the evaporator coil.

The liquid enters the evaporator coil at a temperature lower than in standard cooling operation. This lower temperature increases the latent capacity of the rooftop unit. The refrigerant passes through the evaporator and is turned into a vapor. The air passing over the evaporator coil will become colder than during normal operation. However, as this same air passes over the subcooling coil, it will be slightly warmed, partially reheating the air.

Subcooling mode operates only when the outside air temperature is warmer than 40_F. A factory-installed temperature switch located in the condenser section will lock out subcooling mode when the outside temperature is cooler than 40_F.

The scroll compressors are equipped with crankcase heaters to provide protection for the compressors due to the additional refrigerant charge required by the subcooling/reheat coil.

When in subcooling mode, there is a slight decrease in system total gross capacity (5% less), a lower gross sensible capacity (20% less), and a greatly increased latent capacity (up to 40% more).

Hot Gas Reheat Mode

When the humidity levels in the space require humidity control, a hot gas solenoid valve (specific to hot gas reheat mode only) will open to bypass a portion of hot gas refrigerant around the condenser coil. (See Fig. 46.)

This hot gas will mix with liquid refrigerant leaving the condenser coil and flow to the subcooling/reheat dehumidification coil. Now the conditioned air coming off the evaporator will be cooled and dehumidified, but will be warmed to neutral conditions (72_Fto75_F) by the subcooling/reheat dehumidification coil.

C06135

Fig. 44 --- Perfect Humidityt Normal

Design Cooling Operation

C06136

Fig. 45 --- Perfect Humidity Subcooling

Mode Operation

C06137

Fig. 46 --- Perfect Humidity Hot Gas

Reheat Mode Operation

See Table 37 for the Perfect Humidity adaptive dehumidification system sequence of operation.

Page 45

Table 37—Perfect Humidity Adaptive Dehumidification System Sequence of Operation and

System Response — Single Compressor Unit (581C 024--060, 581B 036-- 072)

THERMOSTAT INPUT ECONOMIZER FUNCTION 581B,C UNIT OPERATION

H Y1 Y2 OAT. < Economizer Set Point Economizer Comp. 1 Subcooling Mode Hot Gas Reheat Mode

Off — — On On On No Off On Yes No

On On Off No Off On Yes No On On On Yes On On Yes No On On Off Yes On On No Ye s On Off Off No Off On No Yes

NOTE: On a th ermostat call for W1, all cooling and dehumidification will be off.

LEGEND

OAT --- Outdoor Air Temperature

Normal Operation

The net effect of the rooftop when in hot gas reheat mode is to provide nearly all latent capacity removal from the space when sensible loads diminish (when outdoor temperature conditions are moderate). When in hot gas reheat mode, the unit will operate to provide mostly latent capacity and extremely low sensible heat ratio capability.

Similar to the subcooling mode of operation, hot gas reheat mode operates only when the outside air temperature is warmer than 40_F. Below this temperature, a factory installed outside air temperature switch will lockout this mode of operation.

SERVICE

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

When sevicing unit, shut off all electrical power to unit and install lockout tag.

Step 1 —Cleaning

Inspect unit interior at the beginning of heating and cooling season and as operating conditions require.

Evaporator

1. Turn unit power off, tag disconnect. Remove evaporator coil access panel.

2. If economizer or two-position damper is installed, remove economizer by disconnecting Molex plug and removing mounting screws.

3. Slide filters out of unit.

4. Clean coil using a commercial coil cleaner or dishwasher detergent in a pressurized spray canister. W ash both sides of coil and flush with clean water. For best results, back-flush toward return-air section to remove foreign material. Flush condensate pan after completion.

5. Reinstall economizer and filters.

6. Reconnect wiring.

7. Replace access panels.

Condenser

Inspect coil monthly. Clean condenser coil annually, and as required by location and outdoor air conditions.

Coil

WARNING

Coil

One--Row Coils

Wash coil with commercial coil cleaner. It is not necessary to remove top panel.

2-Row Coils

Clean coil as follows:

1. Turn off unit power, tag disconnect.

2. Remove top panel screws on condenser end of unit.

3. Remove condenser coil corner post. (See Fig. 47.) To hold top panel open, place coil corner post between top panel and center post. (See Fig. 48.)

C06044

Fig. 47 --- Cleaning Condenser Coil

581B,C

C06045

Fig. 48 --- Propping Up Top Panel

Page 46

581B,C

4. Remove screws securing coil to compressor plate and

5. Remove fastener holding coil sections together at return

6. Use a water hose or other suitable equipment to flush

7. Secure inner and outer coil rows together with a

8. Reposition the outer coil section and remove the coil

Condensate

Check and clean each year at the start of the cooling season. In winter, keep the drain dry or protect it against freeze-up.

Filters

Clean or replace at the start of each heating and cooling season, or more often if operating conditions require it. Replacement filters must be the same dimensions as the original filters.

Outdoor--Air Inlet Scr

Clean the screens with steam or hot water and a mild detergent. Do not use disposable filters in place of screens.

Fig. 49 --- Separating Coil Sections

compressor access panel.

end of condenser coil. Carefully separate the outer coil section 3 to 4 in. from the inner coil section. (See Fig. 49.)

down between the 2 coil sections to remove dirt and debris. Clean the outer surfaces with a stiff brush in the normal manner.

field-supplied fastener.

corner post from between the top panel and center post.

Reinstall the coil corner post and replace all screws.

Drain

eens

Step 2 —Lubrication

Compressor

The compressor is charged with the correct amount of oil at the factory.

Fan Motor

Fan motor bearings are permanently lubricated. No further lubrication is required. No lubrication of condenser-fan or evaporator-fan motors is required.

Bearings

Step 3 —Condenser--Fan Adjustment

Shut off unit power supply. Remove condenser-fan assembly (grille, motor, motor cover, and fan) and loosen fan hub setscrews. Adjust fan height as shown in Fig. 50. Tighten setscrews and replace condenser-fan assembly.

C06046

UNIT

024-060 and 072 (208/230 v)

072 (460 v)

Fig. 50 --- Condenser--Fan Adjustment

FAN HEIGHT (in.) - A

2.75

3.50

C06138

Step 4 —EconoMi$er IV Adjustment

Refer to Optional EconoMi$er IV section.

Step 5 —Evaporator Fan Belt Inspection

Check condition of evaporator belt or tension during heating and cooling inspections or as conditions require. Replace belt or adjust as necessary.

Step 6 —High Pressure Switch

The high-pressure switch contains a Schrader core depressor, and is located on the compressor hot gas line. This switch opens at 428 psig and closes at 320 psig. No adjustments are necessary.

Step 7 —Loss--of--Charge Switch

The loss-of-charge switch contains a Schrader core depressor, and is located on the compressor liquid line. This switch opens at 7 psig and closes at 22 psig. No adjustments are necessary.

Step 8 —Freeze--Stat

The freeze-stat is a bimetal temperature-sensing switch that is located on the “hair-pin” end of the evaporator coil. The switch protects the evaporator coil from freeze-up due to lack of airflow. The switch opens at 30_F and closes at 45_F. No adj u stm ents are necessary.

Step 9 —Refrigerant Charge

Amount of refrigerant charge is listed on unit nameplate (also refer to Table 1). Refer to HVAC Servicing Procedures literature available at your local distributor and the following procedures.

Unit panels must be in place when unit is operating during charging procedure. Unit must operate a minimum of 10 minutes before checking or adjusting refrigerant charge.

An accurate superheat, thermocouple-type or thermistor-type thermometer, and a gauge manifold are required when using the superheat charging method for evaluating the unit charge. Do not

use mercury or small dial-type thermometers because they are not adequate for this type of measurement.

Charge

Use standard evacuating techniques. After evacuating system to 500 microns, weigh in the specified amount of refrigerant. (Refer to Table 1 or 2 and unit information plate.)

Page 47

Low Charge

Cooling

Using Cooling Charging Charts, Fig. 51--54 and 59--62, vary refrigerant until the conditions of the charts are met. Note the charging charts are different from type normally used. Charts are based on charging the units to the correct superheat for the various operating conditions. Accurate pressure gauge and temperature sensing device are required. Connect the pressure gauge to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor-air cfm must be within the normal operating range of the unit.

Perfect Humidity

 System Charging

The system charge for units with the Perfect Humidity adaptive dehumidification system is greater than that of the standard unit alone. The charge for units with this option is indicated on the unit nameplate drawing. Also refer to Fig. 55-- 58. To charge systems using the Perfect Humidity adaptive dehumidification system, fully evacuate, recover, and recharge the system to the nameplate specified charge level. To check or adjust refrigerant charge on systems using the Perfect Humidity adaptive dehumidification system, charge per Fig. 55--58.

Fig. 52 --- Cooling Charging Chart,

Standard 581B 048

C06140

581B,C

Fig. 51 --- Cooling Charging Chart,

Standard 581B 036

C06139

C06141

Fig. 53 --- Cooling Charging Chart,

Standard 581B 060

Page 48

581B,C

Fig. 54 --- Cooling Charging Chart,

Standard 581B 072

C06142

C06144

Fig. 56 --- Cooling Charging Chart, 581B 048 with

Optional Perfect Humidity Adaptive Dehumidification

System

NOTE: When using the charging charts, it is important that only

the subcooling/reheat dehumidification coil liquid line solenoid valve be energized. The subcooling/reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to run the fanatfullspeed.

The charts reference a liquid pressure (psig) and temperature at a point between the condenser coil and the subcooling/reheat dehumidification coil. A tap is provided on the unit to measure liquid pressure entering the subcooling/reheat dehumidification coil.

IMPORTANT: The subcooling mode charging charts (Fig. 55--58) are to be used ONLY with units having the Perfect Humidity adaptive dehumidification system. DO NOT use standard charge (Fig. 51--54 and 59--62) for units with Perfect Humidity system, and DO NOT use Fig. 55--58 for standard units.

Fig. 55 --- Cooling Charging Chart, 581B 036 with

Optional Perfect Humidity Adaptive Dehumidification

System

C06143

Page 49

Fig. 57 --- Cooling Charging Chart, 581B 048 with

Optional Perfect Humidity Adaptive Dehumidification

System

C06145

To Use Cooling Charging Chart, Standard

Unit

Take the outdoor ambient temperature and read the suction pressure gauge. Refer to charts to determine what suction temperature should be. If suction temperature is high, add refrigerant. If suction temperature is low, carefully recover some of the charge. Recheck the suction pressure as charge is adjusted.

Example (Fig. 52):

Outdoor Temperature 75F.........................

Suction Pressure 70 psig...........................

Suction Temperature should be 48F..................

(Suction temperature may vary  5F.) If a charging device is used, temperature and pressure readings

must be accomplished using the charging charts.

To Use Cooling Charging Charts, Units With Humidity

t Adaptive Dehumidification System

Perfect

Refer to charts (Fig. 55 --58) to determine the proper leaving condenser pressure and temperature.

Example (Fig. 55):

Leaving Condenser Pressure 250 psig.................

Leaving Condenser Temperature 105F...............

NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valve be energized. The subcooling/reheat dehumidification coil liquid line solenoid valve MUST be energized to use the charging charts and the outdoor motor speed controller jumpered to run the fanatfullspeed.

Step 10 —Flue Gas Passageways

To inspect the flue collector box and upper areas of the heat exchanger:

1. Remove the combustion blower wheel and motor assembly according to directions in Combustion-Air Blower section below.

2. Remove the 3 screws holding the blower housing to the flue cover.

3. Remove the flue cover to inspect the heat exchanger.

4. Clean all surfaces as required using a wire brush.

581B,C

Fig. 58 --- Cooling Charging Chart, 581B 072 with

Optional Perfect Humidity Adaptive Dehumidification

System

C06146

Page 50

581C - 2 TON CHARGING CHART

Suction Line Temperature (deg C)

5.5 10.5 15.5 20.5 25.5

105.0

100.0

698.0

125 52

115 46

105 41 95 35 85 29 75 24

581B,C

95.0

90.0

85.0

80.0

75.0

Suction Line Pressure (psig)

70.0

65.0 42 52 62 72

SuctionLineTemp(degF)

Fig. 59 --- Cooling Charging Chart,

Standard 581C 024

581C -- 3 TON CHARGING CHART

Suction Line Temperature (deg C)

6.1 11.1 16.1 21.1

95.0

648.0

598.0

548.0

498.0

448.0

648.2

FC 115 46 105 41 95 35 85 29 75 24

Suction Line Pressure (kpa)

C06148

85.0

75.0

Suction Line Pressure (psig)

65.0 43 48 53 58 63 68 73 78

SuctionLineTemp(degF)

Fig. 60 --- Cooling Charging Chart,

Standard 581C 036

598.2

548.2

498.2

448.2

Suction Line Pressure (kpa)

C06149

Page 51

581C -- 4 TON CHARGING CHART

Suction Line Temperature (deg C)

5.6 10.6 15.6 20.6 25.6

97.0

87.0

FC 115 46 105 41

95 35 85 29 75 24

692.0

642.0

592.0

77.0

Suction Line Pressure (psig)

67.0 42 47 52 57 62 67 72 77

SuctionLineTemp(degF)

Fig. 61 --- Cooling Charging Chart,

Standard 581C 048

581C -- 5 TON CHARGING CHART

Suction Line Temperature (deg C)

0.0 5.0 10.0 15.0 20.0 25.0

115.0

105.0

95.0

542.0

492.0

115 46

105 41 95 35 85 29 75 24

810.0

710.0

610.0

Suction Line Pressure (kpa)

581B,C

C06150

85.0

510.0

75.0

Suction Line Pressure (psig)

410.0

Suction Line Pressure (kpa)

65.0

55.0

310.0

42 47 52 57 62 67 72 77

SuctionLineTemp(degF)

C06151

Fig. 62 --- Cooling Charging Chart,

Standard 581C 060

Page 52

Step 11 —Combustion--Air Blower

Clean periodically to ensure proper airflow and heating efficiency. Inspect blower wheel every fall and periodically during heating season. For the first heating season, inspect blower wheel bimonthly to determine proper cleaning frequency.

To inspect blower wheel, remove draft hood and screen. Shine a flashlight into opening to inspect wheel. If cleaning is required, remove motor and wheel as follows:

1. Slide burner access panel out.

2. Remove the 5 screws that attach induced-draft motor assembly to the vestibule cover.

3. Slide the motor and blower wheel assembly out of the blower housing. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with Steps 4 and 5.

4. To remove blower from the motor shaft, remove

2setscrews.

5. To remove motor, remove the 4 screws that hold the

581B,C

motor to mounting plate. Remove the motor cooling fan by removing one setscrew. Then remove nuts that hold motor to mounting plate.

6. To reinstall, reverse the procedure outlined above.

Step 12 —Limit Switch

Remove blower access panel (Fig. 8). Limit switch is located on the fan deck.

Step 13 —Burner Ignition

Unit is equipped with a direct spark ignition 100% lockout system. Integrated Gas Unit Controller (IGC) is located in the control box (Fig. 13). A single LED on the IGC provides a visual display of operational or sequential problems when the power supply is uninterrupted. The LED can be observed through the viewport. When a break in power occurs, the IGC will be reset (resulting in a loss of fault history) and the evaporator fan on/off times delay will be reset. During servicing, refer to the label on the control box cover or Table 39 for an explanation of LED error code descriptions.

If lockout occurs, unit may be reset by interrupting power supply to unit for at least 5 seconds.

Table 38—LED Error Code Description*

LED INDICATION ERROR CODE DESCRIPTION

OFF

1Flash† 2Flashes 3Flashes 4Flashes 5Flashes 6Flashes 7Flashes 8Flashes 9Flashes

Normal Operation Hardware Failure Evaporator Fan On/Off D el ay Modified Limit Switch Fault Flame Sense Fault 4 Consecutive Limit Switch Faults Ignition L ockout Fault Induced-Draft Motor Fault Rollout Switch Fault Internal Control Fault Software Lockout

Step 14 —Main Burners

At the beginning of each heating season, inspect for deterioration or blockage due to corrosion or other causes. Observe the main burner flames and adjust, if necessary.

CAUTION

FURNACE DAMAGE HAZARD

Failure to follow this caution may result in reduced furnace life.

When servicing gas train, do not hit or plug orifice spuds.

Removal and Replacement of Gas Train (See Fig. 63 and

1. Shut off manual gas valve.

2. Shut off power to unit, tag disconnect.

3. Remove compressor access panel.

4. Slide out burner compartment side panel.

5. Disconnect gas piping at unit gas valve.

6. Remove wires connected to gas valve. Mark each wire.

7. Remove induced-draft motor, igniter, and sensor wires at the Integrated Gas Unit Controller (IGC).

8. Remove the 2 screws that attach the burner rack to the vestibule plate.

9. Remove the gas valve bracket.

10. Slide the burner tray out of the unit (Fig. 64).

11. To reinstall, reverse the procedure outlined above.

12. Reinstall burners on rack.

INDUCEDDRAFT MOTOR MOUNTING PLATE

BURNER SECTION

INDUCEDDRAFT MOTOR

MANIFOLD PRESSURE TA P

64)

Fig. 63 --- Burner Section Details

ROLLOUT SWITCH

FLUE EXHAUST

VESTIBULE PLATE

BLOWER HOUSING

GAS VALV E

C06152

LEGEND

LED — Light-Emitting Diode

*A 3-second pause exists between LED error code flashes. If more than

one error code exists, all applicable codes will be displayed in numerical sequence.

†Indicates a code that is not an error. The unit will continue to operate

when this code is displayed.

IMPORTANT: Refer to Troubleshooting Tables for additional information.

C06153

Fig. 64 --- Burner Tray Details

Page 53

LOW HEAT

72,000 BTUH INPUT AND 60,000 BTUH INPUT

MEDIUM AND HIGH HEAT

115,000 BTUH INPUT, 150,000 BTUH INPUT, 90,000BTUH INPUT AND 120,000 BTUH INPUT

581B,C

Fig. 65 --- Spark Gap Adjustment

Cleaning and

Adjustment

1. Remove burner rack from unit as described above.

2. Inspect burners and, if dirty, remove burners from rack.

3. Using a soft brush, clean burners and cross-over port as required.

4. Adjust spark gap. (See Fig. 65.)

C06154

5. Reinstall burner rack as described above.

Step 15 —Replacement Parts

A complete list of replacement parts may be obtained from any Bryant distributor upon request. Refer to Fig. 66 for a typical unit wiring schematic.

Page 54

581B,C

C—Contactor, Compressor CAP — Capacitor CLO — Compressor Lockout COMP — Compressor Motor EQUIP — Equipment FPT — Freeze Up Protection Thermostat FU — Fuse GND — Ground HPS — High-Pressure Switch HS — Hall-Effect Sensor I—Ignitor IDM — Induced-Draft Motor IFC — Indoor Fan Contactor IFM — Indoor Fan Motor IGC — Integrated Gas Unit Controller LPS — Low-Pressure Switch LS — Limit Switch MGV — Main Gas Valve

Fig. 66 --- Typical Wiring Schematic and Component Arrangement (208/230-- 3--6 0 Shown)

LEGEND

OFM — Outdoor (Condenser) Fan Motor OLR — Overload Relay P—Plug PL — Plug Assembly QT — Quadruple Terminal RS — Rollout Switch SAT — Supply Air Temperature Sensor TRAN — Transformer

Field Splice

Marked Wire

Terminal (Marked)

Terminal (Unmarked)

Terminal Block

NOTES:

1. If any of the original wire furnished must be replaced, it must be replaced with type 90 C wire or its equivalent.

2. Three phase motors are protected under primary single phasing conditions.

3. Use copper conductors only.

4. TRAN is wired for 230 v unit. If unit is to be run with 208 v power supply, disconnect BLK wire from 230 v tap (ORN) and connect to 208 v tap (RED). Insulate end of 230 v tap.

Splice

Splice (Marked)

Factory Wiring

Field Control Wiring

Field Power Wiring

Accessory or Optional Wiring To indicate common potential only;

not to represent wiring.

C06147

Page 55

TROUBLESHOOTING

Unit Troubleshooting

Refer to Tables 39--43 for unit troubleshooting details.

Economi$er IV Troubleshooting

See Table 44 for EconoMi$er IV logic. A functional view of the EconoMi$er IV is shown in Fig. 60.

Typical settings, sensor ranges, and jumper positions are also shown. An EconoMi$er IV simulator program is available from your Bryant distributor to help with EconoMi$er IV training and troubleshooting.

Economi$er IV Pr

This procedure is used to prepare the EconoMi$er IV for troubleshooting. No troubleshooting or testing is done by performing the following procedure.

NOTE: This procedure requires a 9-v battery, 1.2 kilo-ohm resistor, and a 5.6 kilo-ohm resistor which are not supplied with the EconoMi$er IV.

IMPORTANT: Be sure to record the positions of all potentiometers before starting troubleshooting.

1. Disconnect power at TR and TR1. All LEDs should be off. Exhaust fan contacts should be open.

2. Disconnect device at P and P1.

3. Jumper P to P1.

4. Disconnect wires at T and T1. Place 5.6 kilo-ohm resistor across T and T1.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from terminals S Connect 1.2 kilo-ohm 4074EJM checkout resistor across terminals S

8. Put 620-ohm resistor across terminals S

9. Set minimum position, DCV set point, and exhaust potentiometers fully CCW (counterclockwise).

10. Set DCV maximum position potentiometer fully CW (clockwise).

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to terminals TR and TR1.

Differential

To check differential enthalpy:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Place 620-ohm resistor across S

3. Place 1.2 k ilo-ohm resistor across S Cool LED should be lit.

4. Remove 620-ohm resistor across S LED should turn off.

5. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

Enthalpy

Single

To check single enthalpy:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Set the enthalpy potentiometer to A (fully CCW). The Free Cool LED should be lit.

3. Set the enthalpy potentiometer to D (fully CW). The Free Cool LED should turn off.

4. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

eparation

and +.

Enthalpy

and +.

and +. The Free

and +. The Free Cool

and +.

DCV (Demand Controlled Ventilation) and Power

Exhaust

To check DCV and Power Exhaust:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Ensure terminals AQ and AQ1 are open. The LED for both DCV and Exhaust should be off. The actuator should be fully closed.

3. Connect a 9-v battery to AQ (positive node) and AQ1 (negative node). The LED for both DCV and Exhaust should turn on. The actuator should drive to between 90 and 95% open.

4. Turn the Exhaust potentiometer CW until the Exhaust LED turns off. The LED should turn off when the potentiometer is approximately 90%. The actuator should remain in position.

5. Turn the DCV set point potentiometer CW until the DCV LED turns off. The DCV LED should turn off when the potentiometer is approximately 9v. The actuator should drive fully closed.

6. Turn the DCV and Exhaust potentiometers CCW until the Exhaust LED turns on. The exhaust contacts will close 30 to 120 seconds after the Exhaust LED turns on.

7. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

DCV Minimum and Maximum

Position

To check the DCV minimum and maximum position:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Connect a 9-v battery to AQ (positive node) and AQ1 (negative node). The DCV LED should turn on. The actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.

4. Turn the DCV Maximum Position potentiometer to fully CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to midpoint. The actuator should drive to between 20 and 80% open.

6. Turn the Minimum Position Potentiometer fully CW. The actuator should drive fully open.

7. Remove the jumper from TR and N. The actuator should drive fully closed.

8. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

Supply-- Air

Input

To check supply-air input:

1. Make sure EconoMi$er IV preparation procedure has been performed.

2. Set the Enthalpy potentiometer to A. The Free Cool LED turns on. The actuator should drive to between 20 and 80% open.

3. Remove the 5.6 kilo-ohm resistor and jumper T to T1. The actuator should drive fully open.

4. Remove the jumper across T and T1. The actuator should drive fully closed.

5. Return EconoMi$er IV settings and wiring to normal after completing troubleshooting.

581B,C

Page 56

Economi$er IV Troubleshooting

Completion

This procedure is used to return the EconoMi$er IV to operation. No troubleshooting or testing is done by performing the following procedure.

1. Disconnect power at TR and TR1.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to previous setting.

4. Set minimum position, DCV set point, and exhaust potentiometers to previous settings.

Table39—LEDErrorCodeServiceAnalysis

5. Remove 620-ohm resistor from terminals SRand +.

6. Remove 1.2 kilo-ohm checkout resistor from terminals S and +. If used, reconnect sensor from terminals SOand +.

7. Remove jumper from TR to N.

8. Remove jumper from TR to 1.

9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect wires at T and T1.

10. Remove jumper from P to P1. Reconnect device at P and P1.

11. Apply power (24 vac) to terminals TR and TR1.

Hardware Failure. (LED OFF)

Fan ON/OFF Delay Modified

(LED/FLASH)

581B,C

Limit Switch Fault. (LED 2 Flashes)

Flame Sense Fault. (LED 3 Flashes)

4ConsecutiveLimit Switch Faults. (LED 4 Flashes)

Ignition Lockout. (LED 5 Flashes)

Induced-Draft Motor Fault. (LED 6 Flashes)

Rollout Switch Fault. (LED 7 Flashes)

Internal Control Fault. (LED 8 Flashes)

Temporary Software Lockout (LED 9 Flashes)

SYMPTOM CAUSE REMEDY

Loss of power to control module (IGC). Check 5 amp fuse on IGC, power to unit, 24-v circuit breaker, and

High limit switch opens during heat exchanger warm-up period before fan-on delay expires.

Limit switch opens within three minutes after blower-off delay timing in Heating mode.

High temperature limit switch is open. Check the operation of the indoor (evaporator) fan motor.

The IGC sensed flame that should not be present.

Inadequate airflow to unit. Check operation of indoor (evaporator) fan motor and that supply-air

Unit unsuccessfully attempted ignition for 15 minutes.

IGC does not sense that induced-draft motor is operating.

Rollout switch has opened. Rollout switch will automatically reset, but IGC will continue to

Microprocessor has sensed an error in the software or hardware.

Electrical interference is impeding the IGC software.

transformer. Units without a 24-v circuit breaker have an internal overload in the 24-v transformer. If the overload trips, allow 10 minutes for automatic reset.

Ensure unit is fired on rate and temperature rise is correct.

Ensure units’ external static pressure is within application guidelines.

Ensure that the supply-air temperature rise is in accordance with the range on the unit nameplate.

Reset unit. If problem persists, replace control board.

temperature rise agrees with range on unit nameplate information.

Check ignitor and flame sensor electrode spacing, gaps, etc. Ensure that flame sense and ignition wires are properly terminated. Verify that unit is obtaining proper amount of gas.

Check for proper voltage. If motor is operating, check the speed sensor plug/IGC Terminal J2 connection. Proper connection: PIN 1— White, PIN 2 — Red, PIN 3 — Black.

lock out unit. Check gas valve operation. Ensure that induceddraft blower wheel is properly secured to motor shaft. Reset unit at unit d isconnect.

If error code is not cleared by resetting unit power, replace the IGC.

Reset 24-v to control board or turn thermostat off and then on. Fault will automatically reset itself in one hour.

CAUTION

COMPONENT DAMAGE HAZARD

Failure to follow this caution may result in component damage.

If the IGC must be replaced, be sure to ground yourself to dissipate any electrical charge that may be present before handling new control board. The IGC is sensitive to static electricity and may be damaged if the necessary precautions are not taken.

LEGEND

IGC --- Integrated Gas Unit Controller LED --- L i g h t --- E m i t t i n g D i o d e

IMPORTANT: Refer to heating troubleshooting for additional heating section troubleshooting information.

Page 57

Table 40— Heating Service Analysis

BurnersWillNo

Nogasatmainburner

s.Checkgaslineforairpurgeasnecessar

y.Afterpurginggaslineofai

r,allowga

InadequateHeating

Toomuchoutdoorair

Characteristics

combustionair)resultsin

Aldehydeodors,CO(carbonmonoxide),

WillNotEnergize

ExcessiveSuperheat.

PROBLEM CAUSE REMEDY

Burners Will Not Ignite.

Inadequate Heating. Dirty air filter. Clean or replace filter as necessary.

Poor Flame Characteristics.

Burners Will Not Tu r n Off.

Misaligned spark electrodes. Check flame ignition and sensor electrode positioning. Adjust as needed. No gas at main burners. Check gas linefor air purge as necessary.After purging gas line ofair, allow gas

Water in gas line. Drain water and install drip leg to trap water. No power to furnace. Check power supply, fuses, wiring, and circuit breaker. No 24 v power supply to control circuit. Check transformer. Transformers with internal overcurrent protection require a

Miswired or loose connections. Check all wiring and wirenut connections. Burned-out heat anticipator in thermostat. Replace thermostat. Broken thermostat wires. Run continuity check. Replace wires, if necessary.

Gas input to unit too low. Check gas pressure at ma nifold. Clock gas meter for input. If too low, increase

Unit undersized for application. Replace with proper unit or add additional unit. Restricted airflow. Clean filter, replace filter, or remove any restrictions. Blower speed too low. Use high speed tap, increase fan speed, or install optional blower, as suitable

Limitswitchcyclesmainburners. Check rotation of blower, thermostat heat anticipator settings, and temperature

Too m uch outdoor air. Adjust minimum position.

Incomplete combustion (lack of combustion air) results in:

Aldehyde odors, CO (carbon monoxide), sooting flame, or floating flame.

Unit is locked into Heating mode for a one minute minimum.

to dissipate for at least 5 minutes before attempting to relight unit. Check gas valve.

cool-down period before resetting. Check 24-v circuit breaker; reset if necessary.

manifold pressure or replace with correct orifices.

for individual units, Adjust pulley.

rise of uni t. Adjust as needed.

Check economizer operation. Check all screws around flue outlets and burner compartment. Tighten as nec-

essary. Cracked heat exchanger. Overfired unit — reduce input, change orifices, or adjust gas line or manifold

pressure. Check vent for restriction. Clean as necessary. Check orifice to burner alignment. Wait until mandatory one-minute time period has elapsed or reset power to

unit.

581B,C

Table 41—Perfect Humidity Adaptive Dehumidification System Subcooling Mode Service Analysis

Subcooling Mode (Liquid Reheat) Will Not Energize.

Low System Capacity. Low refrigerant charge or frosted evaporator coil. 1. Check charge amount. Charge per Fig. 55 ---58.

Loss of Compressor Superheat Conditions with Subcooling/Reheat Dehumidification Coil Energized.

PROBLEM CAUSE REMEDY

No power to control transformer from evaporator-fan motor.

No power from control transformer t o liquid line solenoid valve.

Liquid line solenoid valve will not operate. 1. Solenoid coil defective; replace.

Liquid line solenoid valve will not open. Valve is stuck closed; replace valve.

Thermostatic expansion valve (TXV). 1. Check TXV bulb mounting, and secure tightly to suc-

Check power source and evaporator-fan relay. Ensure all wire connections are tight.

1. Fuse open; check fuse. Ensure continuity of wiring.

2. Low-pressure switch open. Cycle unit off and allow low-pressure switch to reset. Replace switch if it will not close.

3. Transformer bad; check transformer.

2. Solenoid valve stuck open; replace.

2. Evaporator coil frosted; check and replace low-pressure switch if necessary.

tion line.

2. Replace TXV if stuck open or closed.

Table 42—Perfect Humidity Adaptive Dehumidification System Hot Gas Reheat Mode Service Analysis

Reheat Mode Will Not Energize. No power to control transformer from

Loss of Compressor Superheat Conditions with Subcooling/Reheat Dehumidification Coil Energized.

Excessive Supe rheat. Liquid line solenoid valve will not operate. Valve is stuck, replace valve.

PROBLEM CAUSE REMEDY

evaporator-fan motor. No power from control transformer to hot gas

line solenoid valve

Hot gas line solenoid valve will not operate. 1. Solenoid coil defective; replace.

Low refrigerant charge or frosted evaporator coil. 1. Check charge amount. Charge per Fig. 55 ---58.

Thermostatic expansion valve (TXV). 1. Check TXV bulb mounting, and secure tightly to suc-

Hot gas line solenoid valve will not close. Valve is stuck; replace valve.

Check power source and evaporator-fan relay. Ensure all wire connections are tight.

1. Fuse open; check fuse. Ensure continuity of wiring.

2. Low-pressure switch open. Cycle unit off and allow low-pressure switch to reset. Replace switch if it will not close.

3. Transformer bad; check transformer.

2. Solenoid valve stuck closed; replace.

2. Evaporator coil frosted; check and replace low-pressure switch if necessary.

tion line.

2. Replace TXV if stuck open or closed.

Page 58

Table 43—Cooling Service Analysis

CompressorandCondenserFan

ButCondenserFanRuns

NormallySatisfyingThermostat)

CompressorOperatesContinuously.

ExcessiveHeadPressure

HeadPressureTooLow.

ExcessiveSuctionPressure.

SuctionPressureTooLow

581B,C

Compressor and Condenser Fan Will Not Start.

Compressor Will Not Start But Condenser Fan Runs.

CompressorCycles(OtherThan Normally Satisfying Thermostat).

Compressor Operates Continuously.

Excessive Head Pressure.

Head Pressure Too Low.

Excessive Suction Pressure.

Suction Pressure Too Low.

Evaporator Fan Will Not Shut Off.

PROBLEM CAUSE REMEDY

Power failure. Call power company. Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker. Defective thermostat, contactor, transformer, or

control relay. Insufficient line voltage. Determine cause and correct. Incorrect or faulty wiring. Check wiring diagram and rewire correctly. Thermostat setting too high. Lower thermostat setting below room tempera-

Faulty wiring or loose connections in compressor circuit.

Compressor motor burned out, seized, or internal overload open.

Defective run/start capacitor, overload, start relay.

One leg of 3-phase power dead. Replace fuse or reset circuit breaker. Determine

Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and re-

Defective compressor. Replace and determine cause. Insufficient line voltage. Determine cause and correct. Blocked condenser. Determine cause and correct. Defective run/start capacitor, overload, or start

relay. Defective thermostat. Replace thermostat. Faulty condenser-fan motor or capacitor. Replace. Restriction in refrigerant system. Locate restriction and remove. Dirty air filter. Replace filter. Unit undersized for load. Decrease load or increase unit size. Thermostat set too low. Reset thermostat. Low refrigerant charge. Locate leak, repair, and recharge. Leaking valves in compressor. Replace compressor. Air in system. Recover refrigerant, evacuate system, and re-

Condenser coil dirty or restricted. Clean coil or remove restriction. Dirty air filter. Replace filter. Dirty condenser coil. Clean coil. Refrigerant overcharged. Recover excess refrigerant. Air in system. Recover refrigerant, evacuate system, and re-

Condenser air restricted or air short-cycling. Determine cause and correct. Low refrigerant charge. Check for leaks, repair, and recharge. Compressor valves leaking. Replace compressor. Restrictioninliquidtube. Remove restriction. High heat load. Check for source and eliminate. Compressor valves leaking. Replace compressor. Refrigerant overcharged. Recover excess refrigerant. Dirty air filter. Replace filter. Low refrigerant charge. Check for leaks, repair, and recharge. Metering device or low side restricted. Remove source of restriction. Insufficient evaporator airflow. Increase air quantity. Check filter and replace if

Temperature too low in conditioned area. Reset thermostat. Outdoor ambient below 25 F. Install low-ambient kit. Time off delay not finished. Wait for 30-second off delay.

Replace component.

ture. Check wiring an d repair or replace.

Determine cause. Replace compressor .

Determine cause and replace.

cause.

charge to nameplate.

Determine cause and replace.

charge.

necessary.

Page 59

Table 44—EconoMi$er IV Input/Output Logic

Outd

Y1Y

Belowse

Hig

Low

MinimumpositionClosed

Low

Hig

Modulating(betweenmin

Modulating(betwee

Abovese

Hig

Low

Modulating††(betweenmin

Modulating††(betwee

Low

Hig

ModulatingModulating†††

INPUTS OUTPUTS

eman

ontro

entilation (DCV)

Below set (DCV LED O ff)

Above set (DCV LED On)

*For single enthalpy control, the module compares outdoor enthalpy to the ABCD set point. †Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied). **Modulation is based on the supply-air sensor signal. ††Modulation is based on the DCV signal. ***Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV) or fully open (sup-

ply-air signal).

†††Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully open (supply-airsig-

nal).

High (Free Cooling LED Off)

Low (Free Cooling LED On)

High (Free Cooling LED Off)

Low (Free Cooling LED On)

Enthalpy* Compressor NTerminal†

oor

Low

Y1 Y2

eturn

On On On On

Stage Stage

1 2

Minimum position Closed

Occupied Unoccupied

Damper

On Off On Off Off Off Off Off

High

On On On Off On Off Off Off

Modulating** (between min. position and full-open)

Modulating** (between closed and full-open)

Off Off Off Off Minimum position Closed

Low

High

On On On On On Off On Off Off Off Off Off On On On Off

Modulating†† (between min. position and DCV maximum)

Modulating†† (between closed and DCV maximum)

Modulating*** Modulating††† On Off Off Off Off Off Off Off

581B,C

C06053

Fig. 67 --- EconoMi$er IV Functional View

Page 60

START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.: SERIAL NO.:

DA TE: TECHNICIAN:

II. PRE-START-UP (insert checkmark in box as each item is completed)

j VERIFY THA T JOBSITE VOLT AGE AGREES WITH VOLT AGE LISTED ON RA TING PLA TE

j VERIFY THA T ALL P ACKAGING MATERIALS HA VE BEEN REMOVED FROM UNIT

j REMOVE ALL SHIPPING HOLDDOWN BOLTS AND BRACKETS PER INSTALLA TION INSTRUCTIONS

j VERIFY THA T CONDENSA TE CONNECTION IS INSTALLED PER INSTALLA TIO N INSTRUCTI ONS

j CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

j CHECK GAS PIPING FOR LEAKS

j CHECK THA T RETURN (INDOOR) AIR FIL TERS ARE CLEAN AND IN PLACE

581B,C

j VERIFY THAT UNIT INST ALLATION IS LEVEL

j CHECK F AN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW

TIGHTNESS

j CHECK TO ENSURE THA T ELECTRICAL WIRING IS NOT IN CONT ACT WITH REFRIGERANT LINES

OR SHARP METAL EDGES

j CHECK PULLEY ALIGNMEN T AND BELT TENSION PER INSTALLA TI ON INSTRUC TION S

III. START-UP

ELECTRICAL

SUPPL Y VOLT AGE L1-L2 L2-L3

L3-L1 COMPRESSOR AMPS L1 L2 L3 INDOOR-FAN AMPS L1 L2 L3

TEMPERATURES

OUTDOOR-AIR TEMPERA TURE

RETURN-A IR TEMPERATURE

COOLING SUPPLY AIR

DB WB

HEATINGSUPPLYAIR DB

PRESSURES (Cooling Mode)

GAS INLET PRESSURE

GAS MANIFOLD PRESSURE

IN.WG

IN.WG (HIGH FIRE)

REFRIGERANT SUCTION PSIG

REFRIGERANT DISCHARGE

PSIG

j VERIFY THA T 3-PHASE FAN MOTOR AND BLOWER ARE ROTATING IN CORRECT DIRECTION. IF THEY

ARE NOT ROTATING IN CORRECT DIRECTION, LOCKING COLLAR MUST BE RE--TIGHTENED AFTER CORRECTING DIRECTION OF ROTATION

j VERIFY THA T 3-PHASE SCROLL COMPRESSOR IS ROTATING IN THE CORRECT DIRECTION

j VERIFY REFRIGERANT CHARGE USING CHARGING CHAR TS

E2007 Bryant Heating & Coo ling Systems 7310 W. Morris St. Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 2/07

Manufacturer reserves the right to discontinue, or change at any ti me, specifications or designs without notice and without incurring obligations.

Catalog No. II581B---C ---36 --- 1

Replaces: II 581B --- 36--- 7

Bryant 581C024-060, 581B036-072 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

SAFETY CONSIDERA T IONS

INSTALLATION

PRE-START-UP

START-UP

SERVICE

TROUBLESHOOTING

START-UP CHECKLIST