Bryant 581B User Manual

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installation, start-up and service instructions

SINGLE PACKAGE ROOFTOP GAS HEATING/ELECTRIC COOLING UNITS

CONTENTS

Page

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

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-33

I. Step 1 — Provide Unit Support. . . . . . . . . . . . . . . . . 1

II. Step 2 — Field Fabricate Ductwork . . . . . . . . . . . . . 2

III. Step 3 — Determine Location of Drain Line

and External Trap. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

IV. Step 4 — Rig and Place Unit. . . . . . . . . . . . . . . . . . . 4

V. Step 5 — Install Flue Hood . . . . . . . . . . . . . . . . . . . . 4

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

VII. Step 7 — Make Electrical Connections . . . . . . . . . . 9

VIII. Step 8 — Adjust Factory-Installed Options. . . . . . 13

IX. Step 9 — Adjust Evaporator-Fan Speed . . . . . . . . 22

PRE-START-UP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34-37

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38-44

TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . .45-49

INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . CL-1

SAFETY CONSIDERATIONS

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

Untrained personnel can perform basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be p erformed by tra ined servic e 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 al l brazing operations.

CAUTION: Ensure voltage listed on unit data plate

agrees with electrical supply provided for the unit.

WARNING: Disconnect gas piping from unit when leak testing at pressure greater than greater than ing in hazardous condition. If gas valve is subjected to pressure greater than use. When pressure testing field-supplied gas piping at pressures of piping must be isolated by manually closing the gas valve(s).

/2 psig will cause gas valve damage result-

psig, it must be replaced before

/2 psig or less, a unit connected to such

/2 psig. Pressures

581B

Dura

Cancels: II 581B-36-6 II 581B-36-7

WARNING: Before performing service or maintenance operatio ns on u nit , tu rn of f ma i n po wer sw itch to unit. Electrical shock could cause personal injury.

Unit is shipped in the vertical configuration. To convert to horizontal application, remove side duct opening covers. Using the same screws, insta ll covers on vertical duct o penings with the insulation-side down. Seals around duct openings must be tight. See Fig. 1.

I. STEP 1 — PROVIDE UNIT SUPPORT

A. Roof Curb

Assemble and install acce ssory roof curb in accordance with instructions shipped with cu rb. See Fig. 2. Install insulati on, cant strips, roofing felt, and cou nter fla shin g as sh own. Duct- work must be attached to curb. If gas is to be routed through the curb, attach the accessory thru-the-curb service connection plate to the ro of curb in accordance with the a ccessory installation instructions. Connection plate must be installed before unit is set in roof curb.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watert ight seal . Inst all gas ket suppl ied with t he roo f curb as shown in Fig. 2. Improperly applied gasket can also result in air or water leaks and poor unit performance.

Curb should be leve l. Th is is ne ce ss ary f or un it d ra in t o func tion properly. Unit leveling tolerances are shown in Fig. 3. Refer to Accessory Roof Curb Installation Instructions for additional information as required.

B. Slab Mount (Horizontal Units Only)

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.

C. Alternate Unit Support

A non-combustible sleeper rail can be used in the unit curb support area. If sleeper rails cannot be used, support the long sides of the unit wi th a minimum of 3 equ ally spaced 4- in. x 4-in. pads on each side.

Pac

INSTALLATION

Plus Series

Sizes 036-072

3 to 6 Tons

10/1/05

II. STEP 2 — FIELD FABRICATE DUCTWORK

On vertical units, secure all ducts to roof curb and building structure. Do not connect ductwork to unit. For hor izon tal applications, field-supplied flanges should be attached to horizontal discharge openings and all ductwork 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 a n unc ondit i one d spa ce 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.

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 returnair temperature in heating of 50 F (dry bulb), or an intermittent operati on down to 45 F (dry bulb), suc h as when used with a night set-back 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.

III. STEP 3 — DETERMINE LOCATION OF DRAIN LINE AND EXTERNAL TRAP

The unit’s

/4-in. condensate drain connecti ons are locate d on the bottom and end of the unit. Unit discharge connections do not determine the use of drain conn ections ; either drain connection can be used with vertical or horizontal applications.

When using the standard end drain connection, make sure the plug 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 from the bottom connection to the end connection. The center drain plug looks like a star connection, however it can be removed with a

/2-in. socket drive extens ion. 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 at least 4 in. deep and protect against freeze-up. See Fig. 5. 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.

Fig. 1 — Horizontal Conversion Panels

—2—

1′-4″ [406]

D ALT

DRAIN

HOLE

13/4″

[44.5]

GAS POWER CONTROL

/4″

[19] NPT

/2″

[12.7] NPT

[19] NPT

/4″

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]

/2″

[12.7]

ACCESSORY

PWR

/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.

A UNIT SIZE

1′-2″

[356]

2′-0″

[610]

581B036-072

7. Direction of airflow.

8. Connector packages CRBTMPWR001A01 and

002A01 are for thru-the-curb type gas. Packages CRBTMPWR003A01 and 004A01 are for thru-thebottom type gas connections.

Fig. 2 — Roof Curb Details

—3—

MAXIMUM ALLOWABLE

DIFFERENCE (in.)

A-B B-C A-C

0.5 1.0 1.0

Fig. 3 — Unit Leveling Tolerances

DRAIN PLUG

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

DRAIN PLUGHORIZONTAL

Fig. 4 — Condensate Drain Pan

NOTE: Trap should be deep enough to offset maximum unit static dif-

ference. A 4-in. trap is recommended.

Fig. 5 — Condensate Drain Piping Details

IV. STEP 4 — RIG AND PLACE UNIT

Inspect unit for transportation damage. 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. Rollers may be used to move unit across a roof. Level by using unit frame as a reference. See Table 1 and Fig. 6 for additional information. Operating weight is shown in Table 1 and Fig. 6.

Lifting holes are provi ded in base rails as shown in Fig. 6 and 7. Refer to rigging instructions on unit .

A. Positioning

Maintain clearan ce around and above un it to provide minimum distance from combustible materials, proper airflow, and service access. See Fig. 7.

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

Be sure that unit is installed so that sn ow will not b lock the combustion intake or flue outlet.

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.

Position unit on roof curb so that the following clearances are maintained:

/4 in. clearance betwe en the roof curb and the base rail insi de the fr ont an d rear, 0.0 in. clearance betwe en the roof curb and the base rail inside on the duct end of the unit. This will result i n the distance between the roof cu rb and the base rail inside on the condenser end of the unit being approximately equal to Fig. 2, section C-C.

Locate mechanical draft system flue assembly at least 48 in. from an adjacent building or combustible material. Units having accessory flue discharge deflector require only 18 in. clearance. When unit is located adjacent to public walkways, flue assembly must be at least 7 ft above grade.

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

Adequate combustion and ventilation 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 V entilat ion per NFGC (National F uel Gas Code), ANSI (American National Standards Institute) Z223.1latest year and addendum Z223.1A-latest year. 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.

V. STEP 5 — INSTALL FLUE HOOD

Flue hood is shipped screwed to the burner compartment access panel. Remove from shipping location and, using screws provide d , in st all f lue h oo d i n lo cat ion s hown i n Fi g. 7 and 8.

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

NOTE: Low NOx units are available for 3 to 5 ton units.

VI. STEP 6 — INSTALL GAS PIPING

Unit is equipped for use wi th type of gas shown on nameplate. Refer to local building codes, or in the absence of local codes, to ANSI Z223.1-latest year and addendum Z223.1Alatest year entitled NFGC. 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 4.0 in. wg or greater than

13.0 in. wg while unit is operating. For liquid propane and high heat applications, the gas pressure must not be less than 5.0 in. wg or greater than 13.0 in. wg at the unit connection.

—4—

NOTES:

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

2. Dimension in ( ) is in millimeters.

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 and economizer weights.

5. Weights include base unit without the Perfect Humidity™ dehumidification system. See Table 1 for additional unit operating weights with the Perfect Humidity system.

CAUTION: All panels must be in place when rigging.

Fig. 6 — Rigging Details

OPERATING

UNIT 581B

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 33.31 847

WEIGHT

lb kg in. mm in. mm in. mm

“A” “B” “C”

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

Support gas piping as shown in the table in Fig. 9. For exam-

ple, a

/4-in. gas pipe must have one field-fabricated support beam every 8 ft. Ther ef or e, an 18-ft long gas pipe would h a v e a minimum of 3 support beams. See Fig. 9 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. Power wiring, control wiring and gas connection piping can be routed through field-drilled holes in the basepan, which is specifically designed and dimpled for drilling the accessory connection holes.

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

—5—

Table 1 — Physical Data — 581B036-072

UNIT SIZE 581B 036 048 060 072 NOMINAL CAPACITY 3456 OPERATING WEIGHT (lb)

Unit 530 540 560 635 EconoMi$er IV 50 50 50 50 Perfect Humidity™ Dehumidification System 15 23 23 29 Roof Curb 115 115 115 115

COMPRESSOR Scroll

Quantity 1111 Oil (oz) 42 53 50 60

REFRIGERANT TYPE R-22

Operating Charge (lb-oz) Standard Unit 5-8 10-2 10-0 12-8 Unit With Perfect Humidity Dehumidification System 9-0 15-8 17-0 21-0

CONDENSER FAN Propeller

Quantity...Diameter (in.) 1...22 1...22 1...22 1...22 Nominal Cfm 3500 3500 4100 4100 Motor Hp...Rpm Watts Input (Total) 180 180 320 320

CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Fins/in. 1...17 2...17 2...17 2...17 Total Face Area (sq ft) 14.6 16.5 16.5 16.5

EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins, Acutrol™ Metering Device

Standard Unit

Rows...Fins/in. 2...15 2...15 4...15 4...15 Total Face Area (sq ft) 5.5 5.5 5.5 5.5

Unit with Perfect Humidity Dehumidification System

Rows...Fins/in. 1...17 2...17 2...17 2...17 Total Face Area (sq ft) 3.9 3.9 3.9 5.2

EVAPORATOR FAN Centrifugal Type, Belt Drive

Quantity...Size (in.) 1...10 x 10 1...10 x 10 1...10 x 10 1...10 x 10 Nominal Cfm 1200 1600 2000 2400 Maximum Continuous Bhp Std 1.20 1.20 1.30/2.40* 2.40

Motor Frame Size Std 48 48 48/56* 56

Fan Rpm Range Std 680-1044 770-1185 1035-1460 1119-1585

Motor Bearing Type Ball Ball Ball Ball Maximum Fan Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter A/B (in.) Std 1.9/2.9 1.9/2.0 2.4/3.4 2.4/3.4

Nominal Motor Shaft Diameter (in.) Std

Fan Pulley Pitch Diameter (in.) Std 4.5 4.0 4.0 4.0

Belt — Type...Length (in.) Std 1...A...36 1...A...36 1....4...40 1...A...38

Pulley Center Line Distance (in.) 10.0-12.4 10.0-12.4 14.7-15.5 14.7-15.5 Speed Change per Full Turn of

Movable Pulley Flange (rpm)

Movable Pulley Maximum Full

Turns from Closed Position

Factory Setting — Full Turns Open Std 3333

Factory Speed Setting (rpm) Std 826 936 1248 1305

Fan Shaft Diameter at Pulley (in.)

Hi-Static 2.40 2.40 2.90 2.90

Hi-Static 56 56 56 56

Hi-Static 1075-1455 1075-1455 1300-1685 1300-1685

Hi-Static 2.8/3.8 2.8/3.8 3.4/4.4 3.4/3.4

Hi-Static

Hi-Static 4.5 4.0 4.5 4.5

Hi-Static 1...A...39 1...A...39 1...A...40 1...A...40

Std 65 70 75 95

Hi-Static 65 65 60 60

Std 5565

Hi-Static 6655

Hi-Static 3

Hi-Static 1233 1233 1396 1396

LEGEND Bhp — Brake Horsepower

*Single phase/three phase.

†Indicates automatic reset.

**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.

/4...825

31/

units.

2 8

††An LP kit is available as an accessory. If an LP kit is used with low NO

one low NOx baffle must be removed and the units will no longer be classified as low NO

||California compliant three-phase models.

***California SCAQMD compliant low NO

are controlled to 40 nanograms per joule or less.

/4...1100

31/

models have combustion products that

/4...1100

31/

units,

—6—

Table 1 — Physical Data — 581B036-072 (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

Liquid Propane — Alt††

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

Efficiency (Steady State) (%)

Temperature Rise Range

Manifold Pressure (in. wg)

Natural Gas — Std 3.5 3.5 3.5 3.5

Liquid 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.)

HIGH-PRESSURE SWITCH (psig)

Standard Compressor Internal Relief Cutout Reset (Auto.)

LOSS-OF-CHARGE SWITCH/LOW-PRESSURE

SWITCH (Liquid LIne) (psig) Cutout Reset (Auto.)

FREEZE PROTECTION THERMOSTAT

Opens (F) Closes (F)

OUTDOOR-AIR INLET SCREENS

Quantity...Size (in.)

RETURN-AIR FILTERS Throwaway

Quantity...Size (in.) 2...16 x 25 x 2

LEGEND

Brake Horsepower

Bhp —

*Single phase/three phase.

†Indicates automatic reset.

**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.

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 —

071/072 .089...43 .089...43 .089...43 .089...43 114/115 .089...43 .089...43 .089...43 .089...43 149/150 — .102...38 .102...38 .102...38

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 —

072 82.8 82.8 82.8 82 115 80 81 81 81 150 — 80.4 80.4 80

071 82 82 82 — 114 80 81 81 — 149 —8080—

060N 80.2 80.2 80.2 — 090N 81 81 81 — 120N — 80.7 80.7 —

072 25-55 25-55 25-55 25-55 115 55-85 35-65 35-65 35-65 150 — 50-80 50-80 50-80

071 25-55 25-55 25-55 — 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

1...20 x 24 x 1

4...16 x 16 x 2

††An LP kit is available as an accessory. If an LP kit is used with low NO

one low NO as low NO

||California compliant three-phase models.

***California SCAQMD compliant low NOx models have combustion products that

are controlled to 40 nanograms per joule or less.

baffle must be removed and the units will no longer be classified

units.

units,

—7—

—8—

Fig. 7 — Base Unit Dimensions — 581B036-072

Fig. 8 — Flue Hood Details

LEGEND NFGC — National Fuel Gas Code

*Field supplied.

NOTE: Follow all local codes.

STEEL PIPE

NOMINAL DIAMETER

(in.)

or 1

or larger

SPACING OF SUPPORTS

X DIMENSION

(ft)

6 8

Fig. 9 — Gas Piping Guide (With Accessory

Thru-the-Curb Service Connections)

VII. STEP 7 — MAKE ELECTRICAL CONNECTIONS

WARNING: Unit cabinet must have an uninter-

rupted, 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. Failure to follow this warning could result in the installer being liable for personal injury of other s.

A. Field Power Supply

All units except 208/230-v units are factory wired for the voltage shown on the nam eplate. If the 208/230-v unit is to be connected to a 208-v power supply, the transformer must be rewired by moving the blac k wire fro m the 230 -v terminal on the transforme r and connecting it to the 200-v terminal on the transformer.

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

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

ments. In Canada, electrical connections must be in accordance with CSA (Canadian Standards Association) C22.1 Canadian Electrical Code Part One.

Install conduit through side panel openings indicated in Fig. 7. Route power lines through connector to terminal connections as shown in Fig. 10.

On 3-phase units, voltages between phase s must be balanced within 2% and the current within 10%. Use the formula shown in Note 3 under Tables 2A-2D to determine the percentage of 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.

NOTE: If thru-the-bottom accessory connections are used, refer to the thru-the-bottom accessory installation instructions for power wiring. Refer to Fig. 7 for location to drill holes in basepan.

B. Field Control Wiring

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 thermostat subbase terminals to low-voltage connections on unit (shown in Fig. 11) as described in Steps 1-4 below.

1. If mounted on a ro of cu rb an d el ec tr ic al powe r is to b e run through the basepan, an accessory thru-the-bottom connection kit is required. This is available through the local Bryant distributor. This kit is required to ensure a relia ble water-tight connection.

2. If unit is mounte d on roof curb and accessory thruthe-bottom connections are used, route wire through connection plate.

3. Pass control wires thro ugh th e hole pro vided o n unit (see connection D, Connection Sizes table, Fig. 7).

4. 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. 12. The raceway provides the UL-required clearance between high- and low-voltage wiring.

5. Connect thermostat wires to s crew terminals of lowvoltage connection board (see Fig. 11).

NOTE: For wire runs up to 50 ft, use no. 18 AWG (American Wire Gage) insulated wire (35 C minimum). For 51 to 75 ft, use no. 16 AWG insulated wire (35 C minimum). For over 75 ft, use no. 14 AWG insulated wire (35 C minimum).

NOTE: 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.

C. Heat Anticipator Settings

Set heat anticipator settings at 0.14 amp for first stage and

0.14 amp for second-stage heating, when available.

—9—

Fig. 10 — Power Wiring Connections

BRYANT ELECTRONIC THERMOSTAT

LEGEND

C—Contactor

C—Contactor COMP — Compressors

COMPS — Compressors EQUIP — Equipment

EQUIP — Equipment GND — Ground

GND — Ground IFC — Indoor (Evaporator)

IFC — Indoor (Evaporator)

NEC — National Electrical Code

NEC — National Electrical Code TB — Terminal Block

TB — Terminal Block

Fan Contactor

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

Y1/W2

W/W1

Y/Y2

O/W2

IPD/X

WIRE CONNECTIONS TO LOW-VOLTAGE SECTION

LEGEND

Field Wiring

NOTE: Underlined letter indicates active thermostat output when configured for A/C operation.

Fig. 11 — Low-Voltage Connections With or

Without Economizer

RACEWAY LOW VOLTAGE

HOLE IN END PANEL (HIDDEN)

CONNECTIONS

INTEGRATED GAS UNIT CONTROLLER (IGC)

Fig. 12 — Field Control Wiring Raceway

—10—

Table 2A — Electrical Data — Standard Motor Units Without Electrical Convenience Outlet

UNIT 581B

036

(3 Tons)

048

(4 Tons)

060

(5 Tons)

072

(6 Tons)

NOMINAL VOLTAGE

(V-Ph-Hz)

208/230-1-60 187 254 208/230-3-60 187 254 10.3 77.0 0.7 4.9 .60 18.5/18.5 25/25 18/18 90/90

460-3-60 414 508 5.1 39.0 0.4 2.2 .30 9.0 20 9 46

575-3-60 518 632 4.2 31.0 0.4 2.2 .30 7.3 20 7 37 208/230-1-60 187 254 208/230-3-60 187 254 13.5 93.0 0.7 4.9 .60 22.5/22.5 30/30 22/22 106/106

460-3-60 414 508 6.4 46.5 0.4 2.2 .30 10.6 20 10 54

575-3-60 518 632 6.4 40.0 0.4 2.2 .30 10.1 20 10 46 208/230-1-60 187 254 208/230-3-60 187 254 17.3 123.0 1.5 5.8 .60 28.9/28.9 35/35 28/28 168/168

460-3-60 414 508 9.0 62.0 0.8 2.6 .30 14.7 20 14 84

575-3-60 518 632 7.1 50.0 0.8 2.6 .30 11.6 20 12 68 208/230-3-60 187 254

460-3-60 414 508 9.6 75.0 0.6 2.6 .30 15.2 20 15 97

575-3-60 518 632 7.7 56.0 0.6 2.6 .30 12.2 20 12 74

VOLTAGE

RANGE

Min Max Qty RLA LRA FLA FLA FLA MCA MOCP** FLA LRA

COMPRESSOR

(each)

16.0 88.0 0.7 4.9 .60 25.6/25.6 30/30 25/25 101/101

23.7 126.0 0.7 4.9 .60 35.2/35.2 45/45 34/34 139/139

28.8 169.0 1.5 8.8 .60 46.3/46.3 60/60 45/45 216/216

20.5 156.0 1.4 5.8 .60 32.8/32.8 40/40 32/32 200/200

Table 2B — Electrical Data — Standard Motor Units With Electrical Convenience Outlet

UNIT 581B

036

(3 Tons)

048

(4 Tons)

060

(5 Tons)

072

(6 Tons)

FLA — Full Load Amps HACR — Heating, Air Conditioning and

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 UL — Underwriters’ Laboratories

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

power exhaust requirements.

†Used to determine minimum disconnect per NEC.

**Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The UL, Canada units may be fuse or circuit breaker.

2. Electrical data based on 95 F ambient outdoor-air temperature ± 10% voltage.

3. Unbalanced 3-Phase Supply Voltage

Never operate a motor where phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance.

% Voltage Imbalance

= 100 x

Example: Supply voltage is 460-3-60.

Determine maximum deviation from average voltage.

NOMINAL VOLTAGE

(V-Ph-Hz)

208/230-1-60 187 254 208/230-3-60 187 254 10.3 77.0 0.7 4.9 .60 24.5/24.5 30/30 24/24 95/95

460-3-60 414 508 5.1 39.0 0.4 2.2 .30 11.7 20 11 48

575-3-60 518 632 4.2 31.0 0.4 2.2 .30 9.5 20 9 38 208/230-1-60 187 254 208/230-3-60 187 254 13.5 93.0 0.7 4.9 .60 28.5/28.5 35/35 27/27 111/111

460-3-60 414 508 6.4 46.5 0.4 2.2 .30 13.3 20 13 56

575-3-60 518 632 6.4 40.0 0.4 2.2 .30 12.2 20 12 47 208/230-1-60 187 254 208/230-3-60 187 254 17.3 123.0 1.5 5.8 .60 34.9/34.9 40/40 34/34 173/173

460-3-60 414 508 9.0 62.0 0.8 2.6 .30 17.4 20 17 87

575-3-60 518 632 7.1 50.0 0.8 2.6 .30 13.8 20 13 70 208/230-3-60 187 254

460-3-60 414 508 9.6 75.0 0.6 2.6 .30 17.9 20 17 99

575-3-60 518 632 7.7 56.0 0.6 2.6 .30 14.3 20 14 75

LEGEND

Refrigeration

max voltage deviation from average voltage

AB = 452 v

BC = 464 v

AC = 455 v

Average Voltage =

VOLTAGE

RANGE

Min Max Qty RLA LRA FLA FLA FLA MCA MOCP** FLA LRA

average voltage

452 + 464 + 455

1371

= 457

COMPRESSOR

(each)

16.0 88.0 0.7 4.9 .60 31.6/31.6 35/35 30/30 106/106

23.7 126.0 0.7 4.9 .60 41.2/41.2 50/50 39/39 144/144

28.8 169.0 1.5 8.8 .60 52.3/52.3 60/60 50/50 221/221

20.5 156.0 1.4 5.8 .60 38.8/38.8 45/45 37/37 205/205

OFM

(each)

OFM

(each)

COMBUSTION

IFM

FAN MOTOR

COMBUSTION

IFM

FAN MOTOR

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v Maximum deviation is 7 v. Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

= 1.53%

POWER

SUPPLY*

POWER SUPPLY

WITH OUTLET*

7 457

MINIMUM UNIT

DISCONNECT SIZE†

MINIMUM UNIT

DISCONNECT SIZE†

POWER EXHAUST ELECTRICAL DATA

POWER EXHAUST

PART NO.

CRPWREXH021A01 N/A 0.9 N/A 15 CRPWREXH022A01 3.3 N/A 1.32 15 CRPWREXH023A01 N/A 1.8 N/A 15 CRPWREXH028A01 1.7 N/A 0.68 15 CRPWREXH029A01 N/A 1.0 N/A 15 CRPWREXH030A01 1.6 N/A 0.64 15

N/A — Not available

NOTE: If a single power source is to be used, size wire to include power exhaust MCA and MOCP.

Check MCA and MOCP when power exhaust is powered through the unit. Determine the new MCA including the power exhaust using the following formula:

MCA New = MCA unit only + MCA of Power Exhaust For example, using a 581B072 unit with MCA = 32.8 and MOCP = 40, with

CRPWREXH030A01 power exhaust. MCA New = 32.8 amps + 1.6 amps = 34.4 amps If the new MCA does not exceed the published MOCP, then MOCP would not

change. The MOCP in this example is 40 amps and the MCA New is below 40; therefore the MOCP is acceptable. If “MCA New” is larger than the published MOCP, raise the MOCP to the next larger size. For separate power, the MOCP for the power exhaust will be 15 amps per NEC.

MCA

(230 v)

MCA

(460 v)

MCA

(575 v)

MOCP

(for separate

power source)

—11—

Table 2C — Electrical Data — High-Static Motor Units Without Electrical Convenience Outlet

UNIT 581B

036

048

060

072

NOMINAL VO LTAG E

(V-Ph-Hz)

208/230-3-60 187 254

460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 9.4 20 9 60 575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 7.7 20 8 48

208/230-3-60 187 254

460-3-60 414 508 6.4 46.5 0.4 2.6 0.3 11.0 20 11 68 575-3-60 518 632 6.4 40.0 0.4 2.6 0.3 10.4 20 10 57

208/230-3-60 187 254

460-3-60 414 508 9.0 62.0 0.8 3.4 0.3 15.5 20 15 94 575-3-60 518 632 7.1 50.0 0.8 3.4 0.3 12.2 20 12 76

208/230-3-60 187 254

460-3-60 414 508 9.6 75.0 0.6 3.4 0.3 16 20 16 107 575-3-60 518 632 7.7 56.0 0.6 3.4 0.3 12.8 20 13 81

VOLTAGE

RANGE

Min Max Qty RLA LRA FLA FLA RLA MCA MOCP** FLA LRA

COMPRESSOR

(each)

10.3 77.0 0.7 5.8 0.6 19.4 25 19 120

13.5 93.0 0.7 5.8 0.6 23.4 30 23 136

17.3 123.0 1.5 7.5 0.6 30.6 35 30 187

20.5 156.0 1.4 7.5 0.6 34.5 40 34 219

Table 2D — Electrical Data — High-Static Motor Units With Electrical Convenience Outlet

UNIT 581B

036

048

060

072

FLA — Full Load Amps HACR — Heating, Air Conditioning and

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

power exhaust requirements.

†Used to determine minimum disconnect per NEC.

**Fuse or HACR circuit breaker.

NOTES:

1. In compliance with NEC requirements for multimotor and combination load

2. Electrical data based on 95 F ambient outdoor-air temperature ± 10% voltage.

3. Unbalanced 3-Phase Supply Voltage

NOMINAL VOLTAGE

(V-Ph-Hz)

208/230-3-60 187 254

460-3-60 414 508 5.1 39.0 0.4 2.6 0.3 12.1 20 12 63 575-3-60 518 632 4.2 31.0 0.4 2.6 0.3 9.8 20 10 50

208/230-3-60 187 254

460-3-60 414 508 6.4 46.5 0.4 2.6 0.3 13.7 20 13 70 575-3-60 518 632 6.4 40.0 0.4 2.6 0.3 12.6 20 12 59

208/230-3-60 187 254

460-3-60 414 508 9.0 62.0 0.8 3.4 0.3 18.2 20 18 96 575-3-60 518 632 7.1 50.0 0.8 3.4 0.3 14.4 20 14 77

208/230-3-60 187 254

460-3-60 414 508 9.6 75.0 0.6 3.4 0.3 18.7 25 18 109 575-3-60 518 632 7.7 56.0 0.6 3.4 0.3 15.0 20 15 83

LEGEND

Refrigeration

equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. The UL, Canada units may be fuse or circuit breaker.

Never operate a motor where phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percent voltage imbalance.

% Voltage Imbalance

= 100 x

Example: Supply voltage is 460-3-60.

Determine maximum deviation from average voltage.

max voltage deviation from average voltage

VOLTAGE

RANGE

Min Max Qty RLA LRA FLA FLA RLA MCA MOCP** FLA LRA

average voltage

AB = 452 v BC = 464 v AC = 455 v

Average Voltage =

1371

= 457

COMPRESSOR

10.3 77.0 0.7 5.8 0.6 25.4 30 25 124

13.5 93.0 0.7 5.8 0.6 29.4 35 29 140

17.3 123.0 1.5 7.5 0.6 36.6 40 36 192

20.5 156.0 1.4 7.5 0.6 40.5 45 39 224

452 + 464 + 455

(each)

OFM

(each)

OFM

(each)

IFM

COMBUSTION

FAN MOTOR

COMBUSTION

FAN MOTOR

(AB) 457 – 452 = 5 v (BC) 464 – 457 = 7 v

(AC) 457 – 455 = 2 v Maximum deviation is 7 v. Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.

= 1.53%

7 457

POWER

SUPPLY*

POWER

SUPPLY*

MINIMUM UNIT

DISCONNECT

MINIMUM UNIT

DISCONNECT

POWER EXHAUST ELECTRICAL DATA

POWER EXHAUST

PART NO.

CRPWREXH021A01 N/A 0.9 N/A 15 CRPWREXH022A01 3.3 N/A 1.32 15 CRPWREXH023A01 N/A 1.8 N/A 15 CRPWREXH028A01 1.7 N/A 0.68 15 CRPWREXH029A01 N/A 1.0 N/A 15 CRPWREXH030A01 1.6 N/A 0.64 15

N/A — Not available

NOTE: If a single power source is to be used, size wire to include power exhaust MCA and MOCP.

Check MCA and MOCP when power exhaust is powered through the unit. Determine the new MCA including the power exhaust using the following formula:

MCA New = MCA unit only + MCA of Power Exhaust For example, using a 581B072 unit with MCA = 32.8 and MOCP = 40, with

CRPWREXH030A01 power exhaust. MCA New = 32.8 amps + 1.6 amps = 34.4 amps If the new MCA does not exceed the published MOCP, then MOCP would not

MCA

(230 v)

MCA

(460 v)

MCA

(575 v)

SIZE†

MOCP

(for separate

power source)

—12—

VIII. STEP 8 — ADJUST FACTORY-INSTALLED OPTIONS

A. Disconnect Switch

The optional disconnect switch is non-fused. The switch has the capability of bei ng locked in place for safety purposes.

B. Perfect Humidity™ Dehumidification System

Perfect Humidity system operation can be controlled by field installation of a Bryant-approved humidistat device (Fig. 13), or light commercial Thermidistat™ device (Fig. 14). To install the humidistat device:

1. Route humidistat cable through hole provided in unit corner post.

2. Feed wires through the raceway built into th e corner post to the 24-v barrier located on the l eft side of the control box. See Fig. 12. The raceway provides the UL-required clearance betw ee n high -volta ge and l owvoltage wiring.

3. Use a wire nut to connect humidistat cable into lo wvoltage wiring as shown in Fig. 15.

To install Thermidistat device:

1. Route Thermidistat cable through hole provided in unit corner post.

2. Feed the 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. 12. The raceway provides the UL-required clearance between high and low voltage wiring.

3. A field-supplied relay must be installed between the Thermidistat device and the Perfect Humidity circuit (recommended relay: HN612KK324). See Fig. 16. The relay coil is connected between the DEHUM output and C (common) of the unit. The relay controls the Perfect 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.

% RELATIVE HUMIDITY

Fig. 13 — Accessory Field-Installed Humidistat Device

Fig. 14 — Light Commercial Thermidistat Device

C—Contactor (Compressor) CB — Circuit Breaker CR — Cooling Relay DHR — Dehumidify Relay DSV — Discharge Solenoid Valve HU — Humidistat

LPS —

LSV — Liquid Line Solenoid Valve

Low Pressure Switch

LEGEND

LTLO —

TRAN — Transformer

Low Temperature Lockout

Terminal (Unmarked)

Splice

Factory Wiring

Accessory or Optional Wiring

Fig. 15 — Typical Perfect Humidity Dehumidification System

Humidistat Wiring (208/230-v Unit Shown)

—13—

LCT

C Y1 Y2

G W1 W2

DEHUM

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

T STAT WIRES

LEGEND

Fig. 16 — Typical Rooftop Unit with Perfect Humidity™ Dehumidification System with Thermidistat Device

C. 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 f or service tools. An optional “Ho t Outlet” is available from the factory as a special order item.

D. Manual Outdoor-Air 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 outdoor-air opening panel. Save panels and screws. See Fig. 17.

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

4. Replace evaporator coil access panel.

5. Place hood on front of outdoor-air opening panel. See Fig. 18 for hood details. Secure top of hood with the 4 screws removed in Step 3. See Fig. 19.

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

7. Align screw holes on hood with screw holes on side of manual outdoor-air damper. See Fig. 18 and 19. 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 fron t of the damper bl ade. See Fig. 17. Slide blade vertically until it is in the appropriate position determined by Fig. 20. Tighten screws.

9. Remove and save screws currently on sides of hood. Insert screens. Secure screens to hood using the screws. See Fig. 19.

ROOF TOP UNIT

OUTDOOR AIR OPENING PANEL

3 SCREWS (SIDE)

Fig. 17 — Damper Panel with Manual

R C

PINK

PERFECT HUMIDITY SYSTEM

3.2 AMPS

LTLO

RED

PINK

Outdoor-Air Damper Installed

24 V

FROM PERFECT HUMIDITY SYSTEM LLSV

—14—

Fig. 18 — Outdoor-Air Hood Details

WIRING HARNESS

ACTUATOR

ECONOMI$ER IV CONTROLLER

OUTSIDE AIR TEMPERATURE SENSOR

LOW AMBIENT SENSOR

Fig. 19 — Optional Manual Outdoor-Air Damper

with Hood Attached

Fig. 20 — Outdoor-Air Damper Position Setting

E. Optional EconoMi$er IV

See Fig. 21 for EconoMi$er IV component locations. NOTE: These instructions are for installing the optional

EconoMi$er IV only. Refer to the accessory EconoMi$er IV installation instructions 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. 22.

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 I V in the position shown in Fig. 21. To remove the component box from its shipping position, remove the scr ew holding the ho od box bracket to the top of the economizer. Slide the hood box out of the unit. See Fig. 23.

Fig. 21 — EconoMi$er IV Component Locations

FILTER ACCESS PANEL

COMPRESSOR ACCESS PANEL

OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL

Fig. 22 — Typical Access Panel Locations

HOOD BOX BRACKET

Fig. 23 — Hood Box Removal

—15—

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 an d bottom of the indoor coil access panel. See Fig. 24.

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 hoo d sides to the unit. See Fig. 25.

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

6. Insert the ho od divider between the hood side s. See Fig. 25 and 26. Secure hood divider with 2 screws on each hood side. The hood di vider is also used as the bottom filter rack for the aluminum filter.

BAROMETRIC RELIEF

17 1/4”

DIVIDER

OUTSIDE AIR

CLEANABLE ALUMINUM FILTER

FILTER

Fig. 26 — Filter Installation

HOOD

FILTER CLIP

SIDE PAN EL

CAULK

INDOOR COIL ACCESS PANEL

HERE

Fig. 24 — Indoor Coil Access Panel Relocation

TOP PANEL

INDOOR COIL ACCESS PANEL

LEFT HOOD SIDE

19 1/16”

HOOD DIVIDER

SCREW

33 3/8”

Fig. 25 — Outdoor-Air Hood Construction

TOP SIDE PANEL

INDOOR COIL ACCESS PAN EL

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 ope n fil ter cli ps . Clos e th e filt er c lip s to lock the filter into place. See Fig. 26.

8. Caulk the ends of the joint between the unit top panel and the hood top. See Fig. 24.

9. Replace the filter access panel.

10. Install all EconoMi$er IV accessories. EconoMi$er IV wiring is shown in Fig. 27.

Barometric flow capacity is shown in Fig. 28. Outdoor air leakage is shown in Fig. 29. Return air pressure drop is shown in Fig. 30.

F. 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 me asure the outdoor-air tempera ture. The outdoor-air tempera ture is used t o determine whe n 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. 21. The ope rating range of temperatu re measurement is 40 to 100 F.

Supply Air Temperature (SAT) Sensor The supply air temperature sensor is a 3 K thermistor

located at the inlet of the indo or fan. See Fig. 31. This sensor is factory installed. The operating range of temperature measurement is 0° to 158 F. See Table 3 for sensor temperature/resistance values.

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 t empera-

ture lockout switch located in the outdoor airstream which is used to lockout the compressors below a 42 F ambient temperature. See Fig. 21.

—16—

FOR OCCUPANCY CONTROL REPLACE JUMPER WITH FIELD-SUPPLIED TIME CLOCK

500

LEGEND

0.05

STATIC PRESSURE (in. wg)

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

2500

2000

1500

1000

FLOW IN CUBIC FEET PER MINUTE (cfm)

Fig. 28 — Barometric Flow Capacity

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

0.15

0.25

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.

Fig. 27 — EconoMi$er IV Wiring

6000

5000

4000

3000

2000

1000

FLOW IN CUBIC FEET PER MINUTE (cfm)

0.05 0.10 0.15 0. 20 0.25 0.30 0. 35

STATIC PRESSURE (in. wg)

Fig. 30 — Return-Air Pressure Drop

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. 29 — Outdoor-Air Damper Leakage

—17—

SUPPLY AIR TEMPERATURE SENSOR MOUNTING LOCATION

SUPPLY AIR TEMPERATURE SENSOR

Fig. 31 — Supply Air Sensor Location

Table 3 — Supply Air Sensor

Temperature/Resistance Values

TEMPERATURE (F) RESISTANCE (ohms)

–58 200,250 –40 100,680 –22 53,010

–4 29,091 14 16,590 32 9,795 50 5,970 68 3,747 77 3,000

86 2,416 104 1,597 122 1,080 140 746 158 525 176 376 185 321 194 274 212 203 230 153 248 116 257 102 266 89 284 70 302 55

G. EconoMi$er IV Control Modes

Determine the EconoMi$er IV control mode before set up of the control. Some modes of operation may require different sensors. Refer to Table 4. The EconoMi$er IV is su pplied f rom 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 config-

ured 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 outside 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 provid e free c oo lin g using outdoor air. When in this mode, the LED next to the free cooling set point pote ntiometer will be o n. Th e chang eover te mperatu re set point is con trolled by the free cooling set poi nt potenti ometer locate d on the control. See Fig. 32. The scale on the potenti omet er is A, B, C, and D. See Fig. 33 for the corresponding temp erature changeover values.

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 mu st be mounted in th e return airstream. See Fig. 34. Wiring is provided in the EconoM i$er IV wiri ng harness. See Fig. 27.

In this mode of operation, the outdoor-air temperature is compared to the return-air temperature and the l ower temperature airstream is used for cooling. When using this mode of changeover control, turn the enthalpy set point potentiometer fully clockwise to the D setting. See Fig. 32.

Table 4 — EconoMi$er IV Sensor Usage

ECONOMI$ER IV WITH OUTDOOR AIR

APPLICATION

Outdoor Air

Dry Bulb

Differential

Dry Bulb

Single Enthalpy HH57AC078

Differential

Enthalpy

for DCV

Control using a

Wall-Mounted

Sensor

for DCV

Control using a

Duct-Mounted

Sensor

*CRENTDIF004A00 and CRTEMPSN002A00 accessories are used on many

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 appli-

cations.

††CRCBDIOX005A00 is an accessory that contains both 33ZCSENCO2 and

33ZCASPCO2 accessories.

33ZCSENCO2†

33ZCASPCO2**

DRY BULB SENSOR

Accessories Required

None. The outdoor air dry bulb sensor

and

is factory installed.

CRTEMPSN002A00*

HH57AC078

and

CRENTDIF004A00*

33ZCSENCO2

sensor.

CRCBDIOX005A00††

Fig. 32 — EconoMi$er IV Controller Potentiometer

and LED Locations

LED ON

LED OFF

LED ON

LED OFF

DEGREES FAHRENHEIT

LED ON

LED OFF

LED ON

LED OFF

100

Fig. 33 — Outdoor Air Temperature

Changeover Set Points

—18—

ECONOMI$ER IV CONTROLLER

ECONOMI$ER IV

GROMMET

RETURN AIR SENSOR

RETURN DUCT (FIELD-PROVIDED)

Fig. 34 — Return Air Temperature or Enthalpy

Sensor Mounting Location

Outdoor Enthalpy Changeover For enthalpy control, accessory enthalpy sensor (part num-

ber HH57AC078) is required. Replace the standard outdoor dry bulb temperature sensor with the accessory enthalpy sensor in the same mou nt ing lo ca tio n . Se e Fig. 21. 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 outdoo r enthalpy set point potentiometer on the EconoMi$er IV controller. The set points are A, B, C, and D. See Fig. 35. The factory-installed 620-ohm jumper must be in place across terminals SR and SR+ on the EconoMi$er IV controller. See Fig. 21 and 36.

Differential Enthalpy Control For differential enthalpy control, the EconoMi$er IV control-

ler 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 controll er s ele c t s th e l ow e r ent h alp y 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 b r ing in outdoor air for free cooling.

Replace the standard outside air dry bulb temperature sensor with the ac ces sory enth alpy senso r in t he same mou nting location. See Fig. 21. Mount the return air enthalpy sensor in the return air duct. See Fig. 34. Wiring is provide d in the EconoMi$er IV wiring harness. See Fig. 27. The outdoor enthalpy changeover set point is set with the outdoor enthalpy set point potentiometer on the EconoMi$er IV controller. When us ing th is mo de o f changeover control, t ur n t h e enthalpy set point potentiometer fully clockwise to the D setting.

Indoor Air Quality (IAQ) Sensor Input The IAQ input can be used for demand control ventilation

control based on the level of CO2 measured in the space or return air duct.

Mount the accessory IAQ sensor according to manufacturer specifications. The IAQ sensor should be 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. 37.

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 d am p er p o sit i on ( if ac ce ss or y pow e r ex ha ust i s installed). The set point is modified with the Exhaust Fan Set Point (EXH SET) potentiometer. See Fig. 32. 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 unnecess ary fan overload.

Minimum Position C o ntrol There is a minimum damper position potentiometer on the

EconoMi$er IV c o nt ro ll er. See Fig. 32. The mini mum 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 clock wi se.

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 betwee n the outdoor and return-air temperatures.

To determine the minimum position setting, perform the following procedu re:

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

= Outdoor-Air Temperature

)+ (TR x

100 100

) = T

OA = Percent of Outdoor Air TR = Return-Air Temperature 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, and return-air temperature is 7 5 F.

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

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

3. Ensure that th e 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. 27 and that the minimum position potentiometer is turned fully clockwise.

4. Connect 24 vac across term inals TR and TR1.

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

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

Remote control of the EconoMi$er IV damper is desirable when requiring additional tempor ary ventilation. If a field-supplied remote potentiometer (Honeywell part number S96 3B1128) is wired to the EconoMi$er IV controller, the minimum position of the damper can be controlled from a remote location.

—19—

CONTROL

CURVE

A B C D

CONTROL POINT

APPROX. °F (°C)

AT 50% RH

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

LPY

(4)

35 (2)

—

(29)90(32)95(35)

Y A

(16)

(13)

(10)

(7)

(21)

(18)

(27)

(24)

TIVE HUM

RELA

100

(38)

IDITY

105

110

(41)

(43)

)

AQ1

SO+

SR+

(2)

(4)

(7)

(10)

(13)

(16)

(18)

(21)

(24)

(27)

(29)90(32)95(35)

100

(38)

105

(41)

110

(43)

HIGH LIMIT CURVE

APPROXIMATE DRY BULB TEMPERATURE— °F (°C)

Fig. 35 — Enthalpy Changeover Set Points

CO SENSOR MAX RANGE SETTING

TR1

EXH

2V 10V

EXH

Open

2V 10V

DCV

2V 10V

Free Cool

Set

Min Pos

DCV

Max

DCV

Set

24 Vac

Vac

COM

HOT

EF1

6000

5000

4000

3000

2000

1000

RANGE CONFIGURATION (ppm)

DAMPER VOLTAGE FOR MAX VENTILATION RATE

Fig. 37 — CO

800 ppm 900 ppm 1000 ppm 1100 ppm

2345678

Sensor Maximum Range Setting

Fig. 36 — EconoMi$er IV Control

—20—

To control the minimum damper position remotely, remove the factory-insta lled 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. 36.

Damper Movement Damper movement from full open to full closed (or vice

versa) takes 21/2 minutes. Thermostats The EconoMi$er IV control works with co nventional thermo-

stats 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.

Occupancy Control The factory d efa ul t c on fi guration for th e Econ oM i $e r IV con -

trol is occupied mode. Occupied status 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. 27. When the timeclock contacts are clos ed, the EconoMi$e r IV control will be in occupied mode. When the timeclock contacts are open (r emoving the 24-v si gnal from terminal N) , the EconoMi$er IV will be in uno ccupied mode.

Demand Controlled Ventilation (DCV) When using the Ec onoM i $er I V for dem a nd cont roll e d ven ti -

lation, 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 conditio ns. The maximum damper position must be calculated to provide the desired fresh air.

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.

A proportional anticipatory strategy should be taken with the following conditions: a zone with a large area, varied occupancy, and equipmen t that cannot exceed the require d ventilation rate at design conditions. Exceeding the required ventilation rate mea ns the equipmen t can conditi on air at a maximum ventilation rate that is gre ater than the required ventilation rate for maximum occupancy. A proportionalanticipatory strategy will cause the fresh air supplied to increase as the room CO CO

set point has not been reached. By the time the CO

level increases even though the

level reaches the set point, the damper will be at 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 volt age output for minimum or base ventilation. Base ventila tion is the ventilation required to remove contaminants during unoccupied periods. The following equation may be u sed 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 differe nce in outside and return-air temperatures.

= Outdoor-Air Temperature

)+ (TR x

100 100

) = T

OA = Percent of Outdoor Air T

= Return-Air Temperature

RA = Percent of Return Air T

= Mixed-Air Temperature

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

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 t he act uat o r pro vid es a ba se v e ntil at io n 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 For example, a 1100 ppm set point relates to a 15 cfm per person design. Use the 1100 ppm curve on Fig. 37 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

be 1800 ppm. The EconoMi$er IV controller will output the

6.7 volts from the CO

sensor to the actuator when the C O

concentration in the spa ce i s at 110 0 ppm. The DCV se t point may be left at 2 volts since the CO

sensor voltag e will be

ignored by the EconoMi$e r IV cont roller unt il 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 maxim um position as this can result in over-ventilation to the space and potential high-humidity levels.

Sensor Configuration

The CO2 sensor has preset standard voltage settings that can be selected anytime aft er the sensor is pow ered up. See Table 5.

Use setting 1 or 2 for Bryant equipment. See Table 5.

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 Table 5.

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 any-

time after the s ensor is energiz ed. Follow the s teps belo w 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 humid-

ity load on any zone is the fresh air introduced. For some applications, a device such as an energy recovery unit is 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 roof top heating and cooling operation is not adequate for the outdoor humidity level, an energy recovery unit and/or a dehumidification opt ion should be consi dered.

sensor.

sensor sho uld

—21—

Table 5 — CO

Sensor Standard Settings

SETTING EQUIPMENT OUTPUT

Interface w/Standard

2 Proportional Any

Building Control System

Proportional Any

VENTILATION

RATE

(cfm/Person)

3 Exponential Any

Proportional 15

5 Proportional 20

Economizer

6 Exponential 15

7 Exponential 20

8 Health & Safety Proportional —

Parking/Air Intakes/

Loading Docks

Proportional —

LEGEND

ppm — Parts Per Million

IX. STEP 9 — ADJUST EVAPORATOR-FAN SPEED

Adjust evaporator-fan speed to meet jobsite conditions. Tables 6A and 6B show fan rpm at motor p ulley settin gs for standard and al te r na te mo t or s. Tab le s 7 an d 8 s ho w e vaporator fan motor data. Table 9 shows EconoMi$er IV pressure drop. Table 10 shows sound data. Refer to Tables 11-28 for fan performance data. See Fig. 38 for Perfect Humidity™ system static pressure drop.

NOTE: Before adjusting fan speed, make sure the new fan speed will provide an accept able air temperatu re rise range on heating as shown in Table 1.

To change fan speed:

1. Shut off unit power supply.

2. Loosen belt by loosening fan motor mounting nuts. See Fig. 39.

3. Loosen movable pulley flange setscrew (see Fig. 40).

4. Screw movable flange toward fixed flange to increase fan speed and away from fixed flange to decrease fan

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)

speed. Increas ing fan speed in creases load o n motor. Do not exceed maximum speed specifi ed in Table 1.

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

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft.

3. Make angular alignment by loosening motor from mounting plate.

To adjust belt tension:

1. Loosen fan motor mounting nuts.

2. Slide motor mounting plate away from fan scroll for proper be lt tens ion (

/2-in. deflection with 8 to 10 lb of

force) and tighten mounting nuts (see Fig. 39).

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

RELAY

HYSTERESIS

(ppm)

Table 6A — 581B Fan Rpm at Motor Pulley Setting With Standard Motor*

UNIT 581B

036 1044 1008 971 935 898 862 826 789 753 716 680 — —

060 (single and 3-phase) 1460 1425 1389 1354 1318 1283 1248 1212 1177 1141 1106 1070 1035

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

048 1185 1144 1102 1061 1019 978 936 895 853 812 770 — —

072 1585 1538 1492 1445 1399 1352 1305 1259 1212 1166 1119 — —

MOTOR PULLEY TURNS OPEN

Table 6B — 581B Fan Rpm at Motor Pulley Setting With High-Static Motor*

UNIT 581B

036 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075 048 1455 1423 1392 1360 1328 1297 1265 1233 1202 1170 1138 1107 1075 060 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 — — 072 1685 1589 1557 1525 1493 1460 1428 1396 1364 1332 1300 — —

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

MOTOR PULLEY TURNS OPEN

—22—

0.35

0.3

0.25

0.2

0.15

DELTA P IN. WG

0.1

0.05

1000

2000

Fig. 38 — Humidi-MiZer™ Adaptive Dehumidification System Static Pressure Drop (in. wg)

MOTOR MOUNTING PLATE NUTS

Fig. 39 — Belt-Drive Motor Mounting

3000

4000

5000

4 & 5 ton

6 ton

3 ton

6000

Table 7 — Evaporator-Fan Motor Data — Standard Motor

UNIT 581B

036

048

060

072 Three 2.40 2120

Bhp — Brake Horsepower

UNIT

PHASE

MAXIMUM

CONTINUOUS BHP*

OPERATING WATTS*

Single 1.20 1000 208/230 4.9

Three 1.20 1000

Single 1.20 1000 208/230 4.9

Three 1.20 1000

Single 1.30 1650 208/230 10.1

Three 2.40 2120

LEGEND

—23—

Fig. 40 — Evaporator-Fan Pulley Adjustment

MAXIMUM

UNIT VOLTAGE

208/230 4.9

460 2.2 575 2.2

208/230 4.9

460 2.2 575 2.2

208/230 6.7

460 3.0 575 3.0

208/230 6.7

460 3.0 575 3.0

*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.

MAXIMUM

AMP DRAW

Table 8 — Evaporator-Fan Motor Data — High-Static Motors

UNIT 581B

036 Three 2.40 2120

046 Three 2.40 2120

060 Three 2.90 2615

072 Three 2.90 2615

Bhp — Brake Horsepower

PHASE

LEGEND

UNIT

MAXIMUM

CONTINUOUS BHP*

MAXIMUM

OPERATING WATTS*

*Extensive motor and electrical testing on these units ensures that the

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

Table 9 — Accessory/FIOP EconoMi$er IV Static Pressure* (in. wg)

COMPONENT

Vertical EconoMi$er IV 0.045 0.065 0.08 0.12 0.145 0.175 0.22 0.255 Horizontal EconoMi$er IV — — 0.1 0.125 0.15 0.18 0.225 0.275

LEGEND *The static pressure must be added to external static pressure. The FIOP — Factory-Installed Option

1250 1500 1750 2000 2250 2500 2750 3000

sum and the evaporator entering-air cfm should be used in conjunction with the Fan Performance tables to determine indoor blower rpm and watts.

CFM

Table 10 — Outdoor Sound Power (Total Unit)

UNIT 581B

036-048 76 55.9 66.0 64.0 66.2 68.4 64.5 61.7 57.3 060-072 80 59.1 68.9 68.7 71.9 74.0 68.9 65.7 59.0

LEGEND

ARI — Air Conditioning and Refrigeration Institute

ARI RATING

(decibels)

63 125 250 500 1000 2000 4000 8000

OCTAVE BANDS

Table 11 — Fan Performance 581B036 — Vertical Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

900 567 0.15 145 688 0.22 222 786 0.30 296 871 0.37 368 947 0.44 437 1000 599 0.18 177 717 0.27 265 814 0.35 349 897 0.43 430 972 0.51 509 1100 632 0.22 215 747 0.31 313 842 0.41 407 925 0.50 498 999 0.59 587 1200 666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670 1300 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760 1400 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856 1500 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960

AIRFLOW

CFM

900 1016 0.51 505 1080 0.57 572 1139 0.64 637 1195 0.71 702 1249 0.77 765 1000 1041 0.59 587 1104 0.67 662 1163 0.74 737 1219 0.81 811 1272 0.89 883 1100 1066 0.68 674 1129 0.76 759 1188 0.85 843 1243 0.93 925 1296 1.01 1007 1200 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1300 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 ——— 1400 1147 0.98 972 1208 1.09 1086 ————————— 1500 1175 1.09 1086 ————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 680 to 1044 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See page 33 for general fan performance notes.

—24—

Table 12 — Fan Performance 581B036 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

AIRFLOW

CFM

900 1016 0.51 505 1080 0.57 572 1139 0.64 637 1195 0.71 702 1249 0.77 765 1000 1041 0.59 587 1104 0.67 662 1163 0.74 737 1219 0.81 811 1272 0.89 883 1100 1066 0.68 674 1129 0.76 759 1188 0.85 843 1243 0.93 925 1296 1.01 1007 1200 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1300 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 1346 1.28 1275 1400 1147 0.98 972 1208 1.09 1086 1265 1.21 1199 1320 1.32 1310 1371 1.43 1419 1500 1175 1.09 1086 1235 1.22 1209 1292 1.34 1332 1346 1.46 1452 1397 1.58 1572

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

Table 13 — Fan Performance 581B048 — Vertical Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

1200 666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670 1300 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760 1400 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856 1500 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960 1600 810 0.49 491 909 0.65 643 994 0.79 790 1070 0.94 932 1140 1.08 1070 1700 847 0.57 567 943 0.73 730 1027 0.89 888 1101 1.05 1040 1170 1.20 1189 1800 885 0.66 652 978 0.83 826 1060 1.00 994 1133 1.16 1157 — — — 1900 923 0.75 745 1014 0.94 930 1093 1.11 1109 — ————— 2000 962 0.85 847 1049 1.05 1043 —————————

AIRFLOW

CFM

1200 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1300 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 ——— 1400 1147 0.98 972 1208 1.09 1086 ————————— 1500 1175 1.09 1086 ———————————— 1600 ——————————————— 1700 ——————————————— 1800 ——————————————— 1900 ——————————————— 2000 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

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

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See page 33 for general fan performance notes.

—25—

Table 14 — Fan Performance 581B048 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

1200 666 0.26 257 778 0.37 367 871 0.47 471 952 0.57 572 1025 0.67 670 1300 701 0.31 306 810 0.43 426 901 0.54 540 981 0.65 651 1053 0.76 760 1400 737 0.36 361 842 0.49 491 931 0.62 616 1010 0.74 738 1081 0.86 856 1500 773 0.42 422 875 0.57 564 963 0.70 699 1040 0.84 831 1110 0.96 960 1600 810 0.49 491 909 0.65 643 994 0.79 790 1070 0.94 932 1140 1.08 1070 1700 847 0.57 567 943 0.73 730 1027 0.89 888 1101 1.05 1040 1170 1.20 1189 1800 885 0.66 652 978 0.83 826 1060 1.00 994 1133 1.16 1157 1200 1.32 1316 1900 923 0.75 745 1014 0.94 930 1093 1.11 1109 1165 1.29 1283 1231 1.46 1453 2000 962 0.85 847 1049 1.05 1043 1127 1.24 1233 1198 1.42 1417 1263 1.61 1598

AIRFLOW

CFM

1200 1093 0.77 767 1155 0.87 861 1213 0.96 955 1268 1.05 1047 1321 1.14 1137 1300 1119 0.87 866 1181 0.98 970 1239 1.08 1073 1294 1.18 1175 1346 1.28 1275 1400 1147 0.98 972 1208 1.09 1086 1265 1.21 1199 1320 1.32 1310 1371 1.43 1419 1500 1175 1.09 1086 1235 1.22 1209 1292 1.34 1332 1346 1.46 1452 1397 1.58 1572 1600 1204 1.21 1207 1263 1.35 1340 1320 1.48 1472 1373 1.61 1603 1424 1.74 1732 1700 1233 1.34 1336 1292 1.49 1480 1348 1.63 1622 1401 1.77 1762 1451 1.91 1901 1800 1262 1.48 1473 1321 1.64 1627 1376 1.79 1779 1428 1.94 1930 1479 2.09 2078 1900 1293 1.63 1620 1350 1.79 1784 1405 1.96 1946 1457 2.12 2106 1506 2.28 2265 2000 1323 1.79 1776 1380 1.96 1950 1434 2.13 2123 1486 2.31 2293 ———

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

Table 15 — Fan Performance 581B060, Single-Phase — Vertical Discharge Units;

Standard Motor (Belt Drive)*

AIRFLOW

CFM

1500 848 0.42 371 968 0.55 486 1069 0.68 600 1158 0.80 715 1238 0.94 831 1600 887 0.49 433 1004 0.63 556 1103 0.76 678 1190 0.90 800 1269 1.04 922 1700 927 0.57 502 1040 0.71 633 1137 0.86 763 1223 1.00 892 1302 1.15 1022 1800 967 0.65 579 1077 0.81 718 1172 0.96 856 1257 1.12 993 1334 1.27 1130 1900 1007 0.75 663 1115 0.91 811 1208 1.08 957 1291 1.24 1101 — — — 2000 1048 0.85 757 1153 1.03 913 1244 1.20 1066 — ————— 2100 1090 0.97 859 1191 1.15 1023 ————————— 2200 1131 1.09 970 1230 1.29 1143 ————————— 2300 1173 1.23 1091 ———————————— 2400 ——————————————— 2500 ———————————————

AIRFLOW

CFM

1500 1312 1.07 948 1380 1.20 1067 ————————— 1600 1342 1.18 1047 ———————————— 1700 1374 1.30 1153 ———————————— 1800 ——————————————— 1900 ——————————————— 2000 ——————————————— 2100 ——————————————— 2200 ——————————————— 2300 ——————————————— 2400 ——————————————— 2500 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 to 1460 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.30.

3. See page 33 for general fan performance notes.

—26—

Table 16 — Fan Performance 581B060, Three-Phase — Vertical Discharge Units;

Standard Motor (Belt Drive)*

AIRFLOW

CFM

1500 848 0.42 371 968 0.55 486 1069 0.68 600 1158 0.80 715 1238 0.94 831 1600 887 0.49 433 1004 0.63 556 1103 0.76 678 1190 0.90 800 1269 1.04 922 1700 927 0.57 502 1040 0.71 633 1137 0.86 763 1223 1.00 892 1302 1.15 1022 1800 967 0.65 579 1077 0.81 718 1172 0.96 856 1257 1.12 993 1334 1.27 1130 1900 1007 0.75 663 1115 0.91 811 1208 1.08 957 1291 1.24 1101 1368 1.40 1246 2000 1048 0.85 757 1153 1.03 913 1244 1.20 1066 1326 1.37 1219 1401 1.54 1371 2100 1090 0.97 859 1191 1.15 1023 1281 1.33 1185 1361 1.51 1345 1435 1.69 1505 2200 1131 1.09 970 1230 1.29 1143 1318 1.48 1313 1397 1.67 1481 1470 1.86 1649 2300 1173 1.23 1091 1269 1.43 1273 1355 1.63 1451 1433 1.83 1627 1505 2.03 1803 2400 1215 1.38 1223 1309 1.59 1413 1393 1.80 1600 1470 2.01 1784 1540 2.21 1967 2500 1258 1.54 1365 1349 1.76 1564 1431 1.98 1759 1506 2.20 1951 ———

AIRFLOW

CFM

1500 1312 1.07 948 1380 1.20 1067 1445 1.34 1189 1506 1.48 1312 1564 1.62 1437 1600 1342 1.18 1047 1411 1.32 1173 1474 1.46 1300 1535 1.61 1429 1593 1.76 1560 1700 1374 1.30 1153 1441 1.45 1286 1505 1.60 1420 1565 1.75 1555 1622 1.91 1692 1800 1406 1.43 1268 1473 1.58 1407 1535 1.74 1548 1595 1.90 1690 1652 2.06 1833 1900 1438 1.57 1391 1504 1.73 1537 1567 1.90 1685 1626 2.06 1833 1682 2.23 1983 2000 1471 1.72 1523 1536 1.89 1677 1598 2.06 1831 1657 2.24 1986 ——— 2100 1504 1.87 1665 1569 2.06 1825 1630 2.24 1986 —————— 2200 1538 2.04 1816 1602 2.23 1984 ————————— 2300 1572 2.23 1978 ———————————— 2400 ——————————————— 2500 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 to 1460 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

Table 17 — Fan Performance 581B060 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

1500 848 0.42 371 968 0.55 486 1069 0.68 600 1158 0.80 715 1238 0.94 831 1600 887 0.49 433 1004 0.63 556 1103 0.76 678 1190 0.90 800 1269 1.04 922 1700 927 0.57 502 1040 0.71 633 1137 0.86 763 1223 1.00 892 1302 1.15 1022 1800 967 0.65 579 1077 0.81 718 1172 0.96 856 1257 1.12 993 1334 1.27 1130 1900 1007 0.75 663 1115 0.91 811 1208 1.08 957 1291 1.24 1101 1368 1.40 1246 2000 1048 0.85 757 1153 1.03 913 1244 1.20 1066 1326 1.37 1219 1401 1.54 1371 2100 1090 0.97 859 1191 1.15 1023 1281 1.33 1185 1361 1.51 1345 1435 1.69 1505 2200 1131 1.09 970 1230 1.29 1143 1318 1.48 1313 1397 1.67 1481 1470 1.86 1649 2300 1173 1.23 1091 1269 1.43 1273 1355 1.63 1451 1433 1.83 1627 1505 2.03 1803 2400 1215 1.38 1223 1309 1.59 1413 1393 1.80 1600 1470 2.01 1784 1540 2.21 1967 2500 1258 1.54 1365 1349 1.76 1564 1431 1.98 1759 1506 2.20 1951 1576 2.41 2142

AIRFLOW

CFM

1500 1312 1.07 948 1380 1.20 1067 1445 1.34 1189 1506 1.48 1312 1564 1.62 1437 1600 1342 1.18 1047 1411 1.32 1173 1474 1.46 1300 1535 1.61 1429 1593 1.76 1560 1700 1374 1.30 1153 1441 1.45 1286 1505 1.60 1420 1565 1.75 1555 1622 1.91 1692 1800 1406 1.43 1268 1473 1.58 1407 1535 1.74 1548 1595 1.90 1690 1652 2.06 1833 1900 1438 1.57 1391 1504 1.73 1537 1567 1.90 1685 1626 2.06 1833 1682 2.23 1983 2000 1471 1.72 1523 1536 1.89 1677 1598 2.06 1831 1657 2.24 1986 1713 2.41 2142 2100 1504 1.87 1665 1569 2.06 1825 1630 2.24 1986 1688 2.42 2149 1744 2.60 2312 2200 1538 2.04 1816 1602 2.23 1984 1663 2.42 2152 1720 2.61 2321 1775 2.81 2491 2300 1572 2.23 1978 1635 2.42 2153 1695 2.62 2328 1753 2.82 2504 ——— 2400 1607 2.42 2150 1669 2.63 2332 1729 2.83 2515 —————— 2500 1642 2.63 2333 1704 2.84 2523 —————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 to 1685 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See page 33 for general fan performance notes.

—27—

Table 18 — Fan Performance 581B072 — Vertical Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

1800 967 0.63 563 1075 0.80 715 1170 0.97 861 1255 1.13 1002 1333 1.28 1139 1900 1008 0.72 643 1112 0.91 805 1205 1.08 960 1289 1.25 1111 1366 1.42 1258 2000 1049 0.82 731 1151 1.02 903 1241 1.20 1068 1323 1.38 1228 1399 1.56 1384 2100 1091 0.93 827 1189 1.14 1008 1278 1.33 1183 1358 1.52 1353 1433 1.71 1519 2200 1133 1.05 933 1229 1.26 1123 1315 1.47 1308 1393 1.67 1487 1467 1.87 1662 2300 1176 1.18 1047 1268 1.40 1247 1352 1.62 1441 1429 1.84 1630 1501 2.04 1815 2400 1218 1.32 1170 1308 1.55 1380 1390 1.78 1584 1466 2.01 1782 1537 2.23 1977 2500 1261 1.47 1304 1349 1.72 1523 1429 1.96 1736 1503 2.19 1945 — — — 2600 1305 1.63 1448 1390 1.89 1677 1468 2.14 1900 1540 2.38 2117 — — — 2700 1348 1.80 1602 1431 2.07 1841 1507 2.33 2073 — ————— 2800 1392 1.99 1768 1472 2.27 2016 ————————— 2900 1435 2.19 1945 ———————————— 3000 1479 2.40 2135 ————————————

AIRFLOW

CFM

1800 1406 1.43 1273 1475 1.58 1403 1540 1.72 1531 1601 1.87 1657 1660 2.00 1780 1900 1438 1.58 1401 1505 1.73 1541 1569 1.89 1678 1630 2.04 1813 1689 2.19 1945 2000 1470 1.73 1537 1537 1.90 1686 1600 2.06 1833 1660 2.23 1977 1718 2.38 2118 2100 1502 1.89 1681 1568 2.07 1840 1631 2.25 1996 —————— 2200 1535 2.06 1834 1600 2.25 2002 ————————— 2300 1569 2.25 1996 ———————————— 2400 ——————————————— 2500 ——————————————— 2600 ——————————————— 2700 ——————————————— 2800 ——————————————— 2900 ——————————————— 3000 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1119 to 1585 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

Table 19 — Fan Performance 581B072 — Vertical Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

1800 967 0.63 563 1075 0.80 715 1170 0.97 861 1255 1.13 1002 1333 1.28 1139 1900 1008 0.72 643 1112 0.91 805 1205 1.08 960 1289 1.25 1111 1366 1.42 1258 2000 1049 0.82 731 1151 1.02 903 1241 1.20 1068 1323 1.38 1228 1399 1.56 1384 2100 1091 0.93 827 1189 1.14 1008 1278 1.33 1183 1358 1.52 1353 1433 1.71 1519 2200 1133 1.05 933 1229 1.26 1123 1315 1.47 1308 1393 1.67 1487 1467 1.87 1662 2300 1176 1.18 1047 1268 1.40 1247 1352 1.62 1441 1429 1.84 1630 1501 2.04 1815 2400 1218 1.32 1170 1308 1.55 1380 1390 1.78 1584 1466 2.01 1782 1537 2.23 1977 2500 1261 1.47 1304 1349 1.72 1523 1429 1.96 1736 1503 2.19 1945 1572 2.42 2149 2600 1305 1.63 1448 1390 1.89 1677 1468 2.14 1900 1540 2.38 2117 1608 2.62 2331 2700 1348 1.80 1602 1431 2.07 1841 1507 2.33 2073 1578 2.59 2301 1645 2.84 2524 2800 1392 1.99 1768 1472 2.27 2016 1547 2.54 2258 1616 2.81 2495 — — — 2900 1435 2.19 1945 1514 2.48 2203 1587 2.76 2455 — ————— 3000 1479 2.40 2135 1556 2.70 2402 —————————

AIRFLOW

CFM

1800 1406 1.43 1273 1475 1.58 1403 1540 1.72 1531 1601 1.87 1657 1660 2.00 1780 1900 1438 1.58 1401 1505 1.73 1541 1569 1.89 1678 1630 2.04 1813 1689 2.19 1945 2000 1470 1.73 1537 1537 1.90 1686 1600 2.06 1833 1660 2.23 1977 1718 2.38 2118 2100 1502 1.89 1681 1568 2.07 1840 1631 2.25 1996 1690 2.42 2149 1747 2.59 2300 2200 1535 2.06 1834 1600 2.25 2002 1662 2.44 2167 1721 2.62 2330 1778 2.80 2490 2300 1569 2.25 1996 1633 2.45 2174 1694 2.64 2348 1752 2.84 2520 ——— 2400 1603 2.44 2167 1666 2.65 2355 1727 2.86 2539 —————— 2500 1638 2.64 2349 1700 2.87 2546 ————————— 2600 1673 2.86 2541 ———————————— 2700 ——————————————— 2800 ——————————————— 2900 ——————————————— 3000 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 to 1685 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See page 33 for general fan performance notes.

—28—

Table 20 — Fan Performance 581B036 — Horizontal Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

900 553 0.14 134 681 0.22 221 782 0.32 316 870 0.42 417 948 0.53 526 1000 582 0.16 163 707 0.26 257 807 0.36 358 894 0.47 466 971 0.58 580 1100 612 0.20 196 734 0.30 297 833 0.41 405 919 0.52 519 995 0.64 639 1200 643 0.23 234 762 0.34 343 859 0.46 458 944 0.58 579 1020 0.71 705 1300 675 0.28 277 790 0.40 394 886 0.52 517 969 0.65 644 1044 0.78 777 1400 707 0.33 326 819 0.45 452 913 0.58 581 996 0.72 716 1070 0.86 855 1500 740 0.38 382 849 0.52 515 941 0.66 653 1023 0.80 795 1096 0.95 941

AIRFLOW

CFM

900 1019 0.64 640 1084 0.76 760 1146 0.89 885 1203 1.02 1016 1258 1.16 1152 1000 1042 0.70 700 1107 0.83 825 1168 0.96 956 1225 1.10 1091 ——— 1100 1065 0.77 765 1130 0.90 896 1190 1.04 1032 1247 1.18 1173 ——— 1200 1089 0.84 837 1153 0.98 974 1213 1.12 1115 —————— 1300 1113 0.92 915 1177 1.06 1058 ————————— 1400 1138 1.01 1000 1201 1.15 1149 ————————— 1500 1163 1.10 1092 ————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 680 to 1044 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See page 33 for general fan performance notes.

Table 21 — Fan Performance 581B036 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

AIRFLOW

CFM

900 1019 0.64 640 1084 0.76 760 1146 0.89 885 1203 1.02 1016 1258 1.16 1152 1000 1042 0.70 700 1107 0.83 825 1168 0.96 956 1225 1.10 1091 1279 1.24 1232 1100 1065 0.77 765 1130 0.90 896 1190 1.04 1032 1247 1.18 1173 1301 1.33 1319 1200 1089 0.84 837 1153 0.98 974 1213 1.12 1115 1270 1.27 1262 1324 1.42 1413 1300 1113 0.92 915 1177 1.06 1058 1237 1.21 1205 1293 1.36 1358 1347 1.52 1514 1400 1138 1.01 1000 1201 1.15 1149 1261 1.31 1303 1317 1.47 1461 1370 1.63 1623 1500 1163 1.10 1092 1226 1.25 1247 1285 1.41 1407 1341 1.58 1571 1394 1.75 1740

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

—29—

Table 22 — Fan Performance 581B048 — Horizontal Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

1200 643 0.23 234 762 0.34 343 859 0.46 458 944 0.58 579 1020 0.71 705 1300 675 0.28 277 790 0.40 394 886 0.52 517 969 0.65 644 1044 0.78 777 1400 707 0.33 326 819 0.45 452 913 0.58 581 996 0.72 716 1070 0.86 855 1500 740 0.38 382 849 0.52 515 941 0.66 653 1023 0.80 795 1096 0.95 941 1600 773 0.45 444 879 0.59 586 970 0.73 731 1050 0.88 880 1123 1.04 1034 1700 807 0.52 513 910 0.67 663 999 0.82 817 1078 0.98 973 1150 1.14 1134 1800 841 0.59 589 942 0.75 749 1029 0.91 910 1106 1.08 1074 — — — 1900 875 0.68 674 974 0.85 842 1059 1.02 1012 1135 1.19 1184 — — — 2000 910 0.77 767 1006 0.95 944 1090 1.13 1122 — —————

AIRFLOW

CFM

1200 1089 0.84 837 1153 0.98 974 1213 1.12 1115 —————— 1300 1113 0.92 915 1177 1.06 1058 ————————— 1400 1138 1.01 1000 1201 1.15 1149 ————————— 1500 1163 1.10 1092 ———————————— 1600 1189 1.20 1191 ———————————— 1700 ——————————————— 1800 ——————————————— 1900 ——————————————— 2000 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

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

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.20.

3. See page 33 for general fan performance notes.

Table 23 — Fan Performance 581B048 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

1200 643 0.23 234 762 0.34 343 859 0.46 458 944 0.58 579 1020 0.71 705 1300 675 0.28 277 790 0.40 394 886 0.52 517 969 0.65 644 1044 0.78 777 1400 707 0.33 326 819 0.45 452 913 0.58 581 996 0.72 716 1070 0.86 855 1500 740 0.38 382 849 0.52 515 941 0.66 653 1023 0.80 795 1096 0.95 941 1600 773 0.45 444 879 0.59 586 970 0.73 731 1050 0.88 880 1123 1.04 1034 1700 807 0.52 513 910 0.67 663 999 0.82 817 1078 0.98 973 1150 1.14 1134 1800 841 0.59 589 942 0.75 749 1029 0.91 910 1106 1.08 1074 1177 1.25 1242 1900 875 0.68 674 974 0.85 842 1059 1.02 1012 1135 1.19 1184 1205 1.37 1360 2000 910 0.77 767 1006 0.95 944 1090 1.13 1122 1165 1.31 1302 1234 1.49 1485

AIRFLOW

CFM

1200 1089 0.84 837 1153 0.98 974 1213 1.12 1115 1270 1.27 1262 1324 1.42 1413 1300 1113 0.92 915 1177 1.06 1058 1237 1.21 1205 1293 1.36 1358 1347 1.52 1514 1400 1138 1.01 1000 1201 1.15 1149 1261 1.31 1303 1317 1.47 1461 1370 1.63 1623 1500 1163 1.10 1092 1226 1.25 1247 1285 1.41 1407 1341 1.58 1571 1394 1.75 1740 1600 1189 1.20 1191 1252 1.36 1353 1310 1.53 1520 1365 1.70 1690 1418 1.87 1865 1700 1216 1.31 1299 1277 1.48 1468 1335 1.65 1640 1390 1.83 1817 1442 2.01 1998 1800 1242 1.42 1414 1303 1.60 1590 1361 1.78 1770 1415 1.96 1953 1467 2.15 2140 1900 1270 1.55 1538 1330 1.73 1721 1387 1.92 1908 1441 2.11 2098 1493 2.30 2292 2000 1297 1.68 1672 1357 1.87 1862 1414 2.07 2055 1467 2.26 2252 ———

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1075 to 1455 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

—30—

Table 24 — Fan Performance 581B060, Single-Phase — Horizontal Discharge Units;

Standard Motor (Belt Drive)*

AIRFLOW

CFM

1500 800 0.39 350 904 0.49 438 999 0.60 535 1087 0.72 640 1169 0.85 753 1600 839 0.46 412 938 0.57 505 1030 0.68 605 1115 0.80 714 1195 0.93 829 1700 879 0.54 483 974 0.65 580 1062 0.77 684 1144 0.90 796 1221 1.03 914 1800 919 0.63 561 1010 0.75 663 1095 0.87 771 1174 1.00 886 1250 1.14 1008 1900 960 0.73 648 1047 0.85 754 1129 0.98 867 1206 1.11 986 1279 1.25 1111 2000 1001 0.84 744 1085 0.96 855 1163 1.09 972 1238 1.23 1095 — — — 2100 1043 0.96 850 1123 1.09 965 1199 1.22 1086 — ————— 2200 1085 1.09 966 1162 1.22 1086 ————————— 2300 1127 1.23 1092 ———————————— 2400 ——————————————— 2500 ———————————————

AIRFLOW

CFM

1500 1247 0.98 873 1320 1.13 1002 1390 1.28 1137 1600 1270 1.07 952 1342 1.22 1083 ————————— 1700 1295 1.17 1040 ———————————— 1800 1321 1.28 1137 ———————————— 1900 ——————————————— 2000 ——————————————— 2100 ——————————————— 2200 ——————————————— 2300 ——————————————— 2400 ——————————————— 2500 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 to 1460 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

——————

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 1.30.

3. See page 33 for general fan performance notes.

Table 25 — Fan Performance 581B060, Three-Phase — Horizontal Discharge Units;

Standard Motor (Belt Drive)*

AIRFLOW

CFM

1500 800 0.39 350 904 0.49 438 999 0.60 535 1087 0.72 640 1169 0.85 753 1600 839 0.46 412 938 0.57 505 1030 0.68 605 1115 0.80 714 1195 0.93 829 1700 879 0.54 483 974 0.65 580 1062 0.77 684 1144 0.90 796 1221 1.03 914 1800 919 0.63 561 1010 0.75 663 1095 0.87 771 1174 1.00 886 1250 1.14 1008 1900 960 0.73 648 1047 0.85 754 1129 0.98 867 1206 1.11 986 1279 1.25 1111 2000 1001 0.84 744 1085 0.96 855 1163 1.09 972 1238 1.23 1095 1309 1.38 1224 2100 1043 0.96 850 1123 1.09 965 1199 1.22 1086 1271 1.37 1213 1340 1.52 1346 2200 1085 1.09 966 1162 1.22 1086 1235 1.36 1211 1305 1.51 1342 1372 1.67 1479 2300 1127 1.23 1092 1201 1.37 1217 1272 1.52 1347 1340 1.67 1482 1405 1.83 1623 2400 1169 1.38 1229 1241 1.53 1359 1310 1.68 1493 1375 1.84 1633 1439 2.00 1778 2500 1212 1.55 1378 1281 1.70 1513 1348 1.86 1652 1412 2.02 1796 1473 2.19 1945

AIRFLOW

CFM

1500 1247 0.98 873 1320 1.13 1002 1390 1.28 1137 1457 1.44 1280 1522 1.61 1430 1600 1270 1.07 952 1342 1.22 1083 1411 1.37 1221 1476 1.54 1365 1540 1.71 1517 1700 1295 1.17 1040 1365 1.32 1173 1432 1.48 1313 1497 1.64 1459 1559 1.82 1612 1800 1321 1.28 1137 1390 1.43 1273 1455 1.59 1415 1518 1.76 1563 1579 1.93 1718 1900 1348 1.40 1243 1415 1.56 1381 1479 1.72 1526 1541 1.89 1677 1601 2.06 1834 2000 1377 1.53 1359 1442 1.69 1500 1505 1.86 1648 1565 2.03 1801 1624 2.21 1961 2100 1406 1.67 1485 1470 1.83 1629 1531 2.00 1780 1591 2.18 1936 1648 2.36 2098 2200 1437 1.83 1621 1499 1.99 1769 1559 2.16 1923 1617 2.34 2082 ——— 2300 1468 1.99 1769 1529 2.16 1920 1587 2.34 2077 —————— 2400 1500 2.17 1928 1559 2.35 2083 ————————— 2500 1533 2.36 2098 ————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1035 to 1460 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

—31—

Table 26 — Fan Performance 581B060 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

1500 800 0.39 350 904 0.49 438 999 0.60 535 1087 0.72 640 1169 0.85 753 1600 839 0.46 412 938 0.57 505 1030 0.68 605 1115 0.80 714 1195 0.93 829 1700 879 0.54 483 974 0.65 580 1062 0.77 684 1144 0.90 796 1221 1.03 914 1800 919 0.63 561 1010 0.75 663 1095 0.87 771 1174 1.00 886 1250 1.14 1008 1900 960 0.73 648 1047 0.85 754 1129 0.98 867 1206 1.11 986 1279 1.25 1111 2000 1001 0.84 744 1085 0.96 855 1163 1.09 972 1238 1.23 1095 1309 1.38 1224 2100 1043 0.96 850 1123 1.09 965 1199 1.22 1086 1271 1.37 1213 1340 1.52 1346 2200 1085 1.09 966 1162 1.22 1086 1235 1.36 1211 1305 1.51 1342 1372 1.67 1479 2300 1127 1.23 1092 1201 1.37 1217 1272 1.52 1347 1340 1.67 1482 1405 1.83 1623 2400 1169 1.38 1229 1241 1.53 1359 1310 1.68 1493 1375 1.84 1633 1439 2.00 1778 2500 1212 1.55 1378 1281 1.70 1513 1348 1.86 1652 1412 2.02 1796 1473 2.19 1945

AIRFLOW

CFM

1500 1247 0.98 873 1320 1.13 1002 1390 1.28 1137 1457 1.44 1280 1522 1.61 1430 1600 1270 1.07 952 1342 1.22 1083 1411 1.37 1221 1476 1.54 1365 1540 1.71 1517 1700 1295 1.17 1040 1365 1.32 1173 1432 1.48 1313 1497 1.64 1459 1559 1.82 1612 1800 1321 1.28 1137 1390 1.43 1273 1455 1.59 1415 1518 1.76 1563 1579 1.93 1718 1900 1348 1.40 1243 1415 1.56 1381 1479 1.72 1526 1541 1.89 1677 1601 2.06 1834 2000 1377 1.53 1359 1442 1.69 1500 1505 1.86 1648 1565 2.03 1801 1624 2.21 1961 2100 1406 1.67 1485 1470 1.83 1629 1531 2.00 1780 1591 2.18 1936 1648 2.36 2098 2200 1437 1.83 1621 1499 1.99 1769 1559 2.16 1923 1617 2.34 2082 1673 2.53 2246 2300 1468 1.99 1769 1529 2.16 1920 1587 2.34 2077 1644 2.52 2239 1699 2.71 2406 2400 1500 2.17 1928 1559 2.35 2083 1616 2.53 2243 1672 2.71 2408 1726 2.90 2579 2500 1533 2.36 2098 1591 2.54 2257 1647 2.73 2421 — —————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 to 1685 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See page 33 for general fan performance notes.

Table 27 — Fan Performance 581B072 — Horizontal Discharge Units; Standard Motor (Belt Drive)*

AIRFLOW

CFM

1800 913 0.64 569 1010 0.80 715 1098 0.98 869 1178 1.16 1032 1252 1.35 1203 1900 952 0.73 652 1046 0.91 805 1131 1.09 965 1210 1.28 1134 1282 1.48 1311 2000 992 0.84 744 1083 1.02 903 1166 1.21 1070 1242 1.40 1245 1313 1.61 1427 2100 1032 0.95 844 1120 1.14 1010 1200 1.33 1184 1275 1.54 1365 1345 1.75 1553 2200 1073 1.07 954 1158 1.27 1127 1236 1.47 1307 1308 1.68 1495 1377 1.90 1689 2300 1114 1.21 1074 1196 1.41 1254 1272 1.62 1440 1343 1.84 1634 1409 2.07 1834 2400 1155 1.36 1204 1234 1.57 1391 1308 1.78 1584 1377 2.01 1784 1443 2.24 1990 2500 1196 1.51 1345 1273 1.73 1538 1345 1.96 1738 1412 2.19 1945 — — — 2600 1238 1.69 1497 1312 1.91 1697 1382 2.14 1904 1448 2.38 2117 — — — 2700 1280 1.87 1660 1352 2.10 1867 1420 2.34 2081 — ————— 2800 1322 2.07 1835 1392 2.31 2050 ————————— 2900 1364 2.28 2023 ———————————— 3000 ———————————————

AIRFLOW

CFM

1800 1322 1.56 1382 1388 1.77 1568 1451 1.98 1762 1510 2.21 1962 1900 1351 1.68 1495 1416 1.90 1686 1477 2.12 1885 1536 2.35 2090 — — — 2000 1380 1.82 1617 1444 2.04 1814 1505 2.27 2017 — ————— 2100 1411 1.97 1748 1473 2.20 1950 ————————— 2200 1441 2.13 1890 1503 2.36 2097 ————————— 2300 1473 2.30 2041 ———————————— 2400 ——————————————— 2500 ——————————————— 2600 ——————————————— 2700 ——————————————— 2800 ——————————————— 2900 ——————————————— 3000 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1119 to 1585 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.40.

3. See page 33 for general fan performance notes.

———

—32—

Table 28 — Fan Performance 581B072 — Horizontal Discharge Units; High-Static Motor (Belt Drive)*

AIRFLOW

CFM

1800 913 0.64 569 1010 0.80 715 1098 0.98 869 1178 1.16 1032 1252 1.35 1203 1900 952 0.73 652 1046 0.91 805 1131 1.09 965 1210 1.28 1134 1282 1.48 1311 2000 992 0.84 744 1083 1.02 903 1166 1.21 1070 1242 1.40 1245 1313 1.61 1427 2100 1032 0.95 844 1120 1.14 1010 1200 1.33 1184 1275 1.54 1365 1345 1.75 1553 2200 1073 1.07 954 1158 1.27 1127 1236 1.47 1307 1308 1.68 1495 1377 1.90 1689 2300 1114 1.21 1074 1196 1.41 1254 1272 1.62 1440 1343 1.84 1634 1409 2.07 1834 2400 1155 1.36 1204 1234 1.57 1391 1308 1.78 1584 1377 2.01 1784 1443 2.24 1990 2500 1196 1.51 1345 1273 1.73 1538 1345 1.96 1738 1412 2.19 1945 1477 2.43 2157 2600 1238 1.69 1497 1312 1.91 1697 1382 2.14 1904 1448 2.38 2117 1511 2.63 2335 2700 1280 1.87 1660 1352 2.10 1867 1420 2.34 2081 1484 2.59 2300 1546 2.84 2526 2800 1322 2.07 1835 1392 2.31 2050 1458 2.56 2270 1521 2.81 2496 — — — 2900 1364 2.28 2023 1432 2.53 2245 1496 2.78 2472 — ————— 3000 1406 2.50 2224 1472 2.76 2452 —————————

AIRFLOW

CFM

1800 1322 1.56 1382 1388 1.77 1568 1451 1.98 1762 1510 2.21 1962 1568 2.44 2169 1900 1351 1.68 1495 1416 1.90 1686 1477 2.12 1885 1536 2.35 2090 1593 2.59 2302 2000 1380 1.82 1617 1444 2.04 1814 1505 2.27 2017 1563 2.51 2227 1619 2.75 2443 2100 1411 1.97 1748 1473 2.20 1950 1533 2.43 2159 1590 2.67 2374 — — — 2200 1441 2.13 1890 1503 2.36 2097 1562 2.60 2311 1618 2.85 2532 — — — 2300 1473 2.30 2041 1533 2.54 2254 1591 2.79 2474 — ————— 2400 1505 2.48 2203 1564 2.73 2422 ————————— 2500 1537 2.68 2376 ———————————— 2600 1571 2.88 2560 ———————————— 2700 ——————————————— 2800 ——————————————— 2900 ——————————————— 3000 ———————————————

Bhp — Brake Horsepower Watts — Input Watts to Motor

*Motor drive range: 1300 to 1686 rpm. All other rpms require field-

supplied drive.

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

LEGEND

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)

NOTES:

1. Boldface indicates field-supplied drive is required.

2. Maximum continuous bhp is 2.90.

3. See below for general fan performance notes.

GENERAL FAN PERFORMANCE NOTES

1. Values include losses for filters, unit casing, and wet coils. See Fig. 38 and Table 9 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 7 and 8 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.

—33—

PRE-START-UP

WARNING: Failure to observe the following warn-

ings could result in serious personal injury.

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

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

3. Do not remove comp ressor terminal cover until all electrical sou rc e s are disco nnected.

4. Relieve all pressure from system before touching or disturbing anything inside terminal box if refrigerant leak is su spe cte d arou nd c ompre ssor terminals.

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

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

a. Shut off electrical power and then gas to

unit.

b. Recover refrigerant to reli eve all pressure

from system using both high-pressure and low-pressure ports.

c. Cut component connection tubing with tub-

ing cutter and remove component from unit.

d. Carefully unsweat remaining tubing stubs

when necessary. Oil can ignite when exposed to torch flame.

Proceed as follows to ins pect and prep are the unit f or 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. Inspect for oil at all refrigerant tubing connec-

tions and 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 con-

nections. Be sure that connections are completed 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 on page 38 for more details.

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

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

I. UNIT PREPARATION

Make sure that unit has b een installed in accordance with installation instructions and applicable codes.

II. GAS PIPING

Check gas piping for leaks.

WARNING: Disconnect gas piping from unit when leak testing at pressure greater than sures greater than

/2 psig will cause gas valve damage

/2 psig. Pres-

resulting in hazardous condition. If gas valve is subjected to pressure greater than

/2 psig, it must be replaced before use. When pressure testing fieldsupplied gas piping at pressures of

/2 psig or less, a unit connected to such piping must be isolated by manually closing t he ga s valve.

III. RETURN-AIR FILTERS

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

IV. OUTDOOR-AIR INLET SCREENS

Outdoor-air inlet screen must be in place before operating unit.

V. COMPRESSOR MOUNTING

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

VI. INTERNAL WIRING

Check all electrical connections in unit control boxes. Tighten as required.

VII. REFRIGERANT SERVICE PORTS

Each unit system has 4 Schrade r-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 highpressure and low-pressure switches, respectively.

VIII. 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-ri ng s in side wh ich sc rew the ca p on to a brass body to prev e n t l ea ks. No field access to th ese valves is available at this time. Ensure the plastic caps remain on the valves and are tight or the possibility o f refrigerant leakage could occur.

IX. COMPRESSOR ROTATION

On 3-phase units with scroll compressors, it is important to be certain compressor is rotating i n the proper direc tion. To determine whether or not compressor is rotating in the proper direction:

1. Connect service gages 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 evaporator fan (size 060 and 072 only) is probably also rotating in the wrong direction.

2. Turn off power to the unit and install lockout tag.

—34—

3. Reverse any two of the unit power leads.

4. Reenergize to the compressor. Check pressures.

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

NOTE: When the compres sor is rotating in th e wrong direction, the unit will make an elevated level of noise and will not provide cooling.

X. COOLING

Set space thermostat to OFF position. To start unit, turn on main power supply. Set system selector switch at COOL position and fan switch at AUTO. position. Adjust thermostat to a setting below ro om tem per ature. Com press or sta rts on closure of contactor.

Check unit charge. Refer to Refrigerant Charge section on page 38.

Reset thermostat at a position above room temperature. Compressor will shut off. Evaporator fan will shut off after a 30-second delay.

A. To Shut Off Unit

Set system selector switch at OFF position. Resetting thermostat at a positio n above room temperature sh uts unit off temporarily until space temperature exceeds thermostat setting. Units are equipped with Cycle-LOC™ protection device. Unit shuts down on any safety trip, and indicator light on thermostat comes on. Check reason for all safety trips.

Compressor restart is a ccomplished by manual reset a t the thermostat by turning the selector switch to OFF and then to ON position.

XI. MAIN BURNERS

Main burners are factory set and should require no adjustment.

TO CHECK ignition of main burners and heating controls, move thermostat set p oint abo ve room t emperat ure and ve rify that the burne rs light and evaporator fan is energized. Check heating effect, then lower the thermostat setting below the room temperature and verify tha t the burners and evaporator fan turn off.

Refer to Tables 29A and 29B for the correct o rifice to use at high altitudes.

Table 29A — Altitude Compensation* —

581B036-072 Standard Units

72,000 AND 115,000 BTUH

ELEVATION

(Ft)

0-2,000 33 43 30 38

2,000 36 44 31 39 3,000 36 45 31 40 4,000 37 45 32 41 5,000 38 46 32 42 6,000 40 47 34 43 7,000 41 48 35 43 8,000 42 49 36 44

9,000 43 50 37 45 10,000 44 50 39 46 11,000 45 51 41 47 12,000 46 52 42 48 13,000 47 52 43 49 14,000 48 53 44 50

*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.

†Orifice available through your local Bryant distributor.

NOMINAL INPUT

Natural

Gas

Orifice

Size†

Liquid

Propane

Orifice

Size†

150,000 BTUH

NOMINAL INPUT

Natural

Gas

Orifice

Size†

Propane

Liquid

Orifice

Size†

Table 29B — Altitude Compensation* —

581B036-072 Low NOx Units

60,000 AND 90,000 BTUH

ELEVATION

(Ft)

0-2,000 38 45 32 42

2,000 40 47 33 43 3,000 41 48 35 43 4,000 42 49 36 44 5,000 43 49 37 45 6,000 43 50 38 45 7,000 44 50 39 46 8,000 45 51 41 47

9,000 46 52 42 48 10,000 47 52 43 49 11,000 48 53 44 50 12,000 49 53 44 51 13,000 50 54 46 52 14,000 51 54 47 52

*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.

†Orifice available through your local Bryant distributor.

NOMINAL INPUT

Natural

Gas

Orifice

Size†

Liquid

Propane

Orifice

Size†

120,000 BTUH

NOMINAL INPUT

Natural

Gas

Orifice

Size†

Propane

Liquid

Orifice

Size†

XII. HEATING

1. Purge gas supply line of air by opening union ahead of the gas valve. If gas odor is det ecte d, tigh ten un ion 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 li ght 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 evapo rator-fan motor will turn off in 45 se conds 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 del ay for the next cycle will be 5 seconds less than the time at which the swit ch trip ped. (Exa mple: If th e l imit switch trip s at 30 seconds, the evaporator-fan on delay for the next cycle will occur at 25 seconds.) T o prevent short-cycling, a 5-second reduction will only occur if a minimum of 10 minutes has elapsed since the last call for heatin g.

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 pe riod, th e ev apora tor-fan off delay wil l incr ease by 15 seconds. A maximum of 9 trips can occur, extending the evaporator-fan off del ay to 180 seconds.

To restore the original default value, reset the power to the unit.

—35—

A. To Shut Off Unit

Set system selector switch at off position. Resetting heating selector lever below room temperature wi ll temporarily shut unit off until space temperature falls below thermostat setting.

XIII. SAFETY RELIEF

A soft-solder joint at the suction service Schrader port provides pressure relief under abnormal temperature and pressure conditions.

XIV. VENTILATION (Continuous Fan)

Set fan and system selector switches at ON and OFF positions, respectively. Evaporator fan operates continuous ly to provide constant air circulation. When the evaporator-fan selector switch is turned to the OFF position, there is a 30-second del a y be f or e th e f an tur ns off.

XV. OPERATING SEQUENCE

A. Cooling, Units Without Economizer

When thermostat calls for cooling, terminals G and Y1 and the compressor contactor (C) are energized. The indoor (evaporator) fan motor (IFM), compressor, and outdoor (condenser) fan motor (OFM) start. The OFM runs continuously while the unit is in cooling. When the thermostat is satisfied, C is deenergized and the compressor and OFM shut off. After a 30-second delay, the IFM shuts off. If the thermostat fan selector switch is in the ON position, the evaporator motor will run continuously.

B. Heating, Units Without Economizer

When the thermostat call s for heatin g, terminal W1 is energized. The induced-draft motor is energized and the burner ignition seque nce begins. The indoor (evaporator) fan m otor (IFM) is energized 45 seconds after a flame is ignited. When additional he at is n eeded, W 2 is en ergized and t he high- fire solenoid on the main gas valve (MGV) is energized. When the thermostat is sati sfied and W1 is deenergiz ed, the IFM stops after a 45-second time-off delay.

C. Cooling, Units With EconoMi$er IV

When free cooling is not avail able, the compressors will be controlled b y th e zone ther mosta t. Wh en f ree co oling is a vai lable, 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 be lo w 50 F, the dampers will be modulated (open or close) to bring the supply-air temperature back within the set points.

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 ca pacity caus es the s upply-a i r 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

sensors are connecte d to the

EconoMi$er IV control, a demand controlled ventilation strategy will begin to operate. As the CO increases abov e the CO

set point, the minimum position of

level in the zone

the damper will be increased proportionally. As the CO2 level

decreases because of the increase in fresh air, the outdoor-air damper will be propo rtionally 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

/2 and 21/2 minutes.

If free cooling can be used as determined from the appropriate changeover command (switch, dr y 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 a ir 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.

D. Heating, Units With EconoMi$er IV

When the room temper ature calls for he at, the heating controls are energized as described in the Heating, Units Without Economizer section. When the thermostat is satisfied, the economizer damper moves to the minimum position.

E. Units With Perfect Humidity™ Dehumidification System

Normal Design Cooling Operation When the rooftop operates under the normal sequence of

operation, the compressors will cycle to maintain indoor conditions. See Fig. 41.

The Perfect Humidity adaptive dehumidification system includes a factory-install ed 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 subcoolin g mode is init iated, this wi ll energize (clo se)

the liquid line solenoid valve (LLSV) forcing the hot liquid refrigerant to enter the subcooling coil (see Fig. 42).

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 valv e ( TX V) w he re the l i qui d d ro ps t o a l ower pressure. The TXV does no t have a p ress ure drop grea t enou gh to change the liquid to a 2-phase fluid, so the liquid then enters the Acutrol™ device at the evaporator coil.

The liquid enters th e evapo rator coil at a temper atur e lowe r 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 pa ssing over the evapora tor coil will become colder than during normal operation. However, as this same air passes over t he subc ooli ng coil , it wil l be sli ghtly wa rmed , partiall y re heating the air.

Subcooling mod e ope ra tes onl y wh en th e outs ide - air te mp e rature is warmer than 40 F. A factory-installed tem perature 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 refrigera nt charge requ ired 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).

—36—

Hot Gas Reheat Mode When the humidity levels in the space req uire humidity con-

trol, a hot gas solenoid valve (specific to ho t gas reheat mode only) will open to bypass a portion of hot gas refrigerant around the condenser coil (see Fig. 43).

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 F to 75 F) by the subcooling/reheat dehumidification coil.

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 lock out this mode of operation.

See Table 30 for the dehumidification system sequence of operation.

Fig. 42 — Perfect Humidity Subcooling

Mode Operation

Fig. 41 — Perfect Humidity™ Normal

Design Cooling Operation

Table 30 — Perfect Humidity Dehumidification System Sequence of Operation and

THERMOSTAT INPUT ECONOMIZER FUNCTION 581B UNIT OPERATION

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

Off — — Normal Operation

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 Yes

On Off Off No Off On No Yes

LEGEND

OAT — Outdoor Air Temperature

System Response — Single Compressor Unit

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

Fig. 43 — Perfect Humidity Hot Gas

Reheat Mode Operation

—37—

SERVICE

CAUTION: When servicing unit, shut off all elec-

trical power to unit and install lockout tag to avoid shock hazard or injury from rotating parts.

I. CLEANING

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

A. Evaporator Coil

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. Refer to accessory economizer installation instructi ons or Op tion al EconoM i$er IV section on page 15 for additional information.

3. Slide filters out of unit.

4. Clean coil using a commercial coil cleaner or dishwasher detergent in a pressurized spray canister. Wash 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 ec onomizer and filters.

6. Reconnect wiring.

7. Replace access panels.

B. Condenser Coil

Inspect coil mon thly. Clean condenser coil an nually, and as required by location and outdoor air conditions.

One-Row Coil Wash coil wi th com merci al coi l clea ner. 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. 44. To hold top panel open, place coil corner post between top panel and center post. See Fig. 45.

4. Remove screws securing coil to compressor plate and compressor access panel.

5. Remove fastener holding coil sections together at return end of condenser coil. Carefull y separate the outer coil section 3 to 4 in. from the inner coil section. See Fig. 46.

6. Use a wate r hose or other suitable equipment to flush down between the 2 coil se ctions to remove dirt and debris. Clean the outer surfaces with a stiff brush in the normal manner.

7. Secure inner and o uter co il ro w s to get he r wi th a f ield supplied fastener.

8. Reposition the outer coil sectio n and remove the coil corner post from between the top panel and center post. Reinstall the coil corner post and replace all screws.

C. Condensate Drain

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

D. Filters

Clean or rep lace at s tar t of e ach h eatin g an d co oling seas on, or more often if operating conditions require it. Replacement filters must be same dimensions as original filters.

E. Outdoor-Air Inlet Screens

Clean screen with stea m or hot water and a mild deter gent. Do not use disposable filters in place of screen.

II. LUBRICATION

A. Compressors

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

B. Fan Motor Bearings

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

III. CONDENSER-FAN ADJUSTMENT (Fig. 47)

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. 47. Tighten setscrews and replace condenser-fan assembly.

IV. ECONOMI$ER IV ADJUSTMENT

Refer to Optional EconoMi$er IV section on page 15.

V. EVAPORATOR FAN BELT INSPECTION

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

VI. HIGH-PRESSURE SWITCH

The high-pressure swit ch co ntains a Sch rader core depress or, and is located on the compressor hot gas line. This switch opens at 428 psi g and clos es at 3 20 psi g. No ad ju st me nts ar e necessary.

VII. LOSS-OF-CHARGE SWITCH

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

VIII. 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 pro t ec ts t he evaporator coil from freeze-up due to lack of airflow. The switch opens at 30 F and closes at 45 F. No adjustments are necessary.

IX. 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 refrigera nt charge.

An accurate superheat, thermocouple-type or thermistortype thermometer, and a gage manifold are required when using the superheat charging method for evaluating the unit charge. Do not use mercury or small dial-type ther mometers

because they are not adequate for this type o f measu rement.

—38—

Fig. 44 — Cleaning Condenser Coil

Fig. 45 — Propping Up Top Panel

Fig. 46 — Separating Coil Sections

A. No Charge

Use standar d evacuating technique s. After ev acuating system to 500 microns, weigh in the specified amount of refrigerant. (Refer to Table 1 and unit information plate.)

B. Low Charge Cooling

Using Cooling Charging Charts, Fig. 48-51, 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 super heat for the various operating conditions. Accurate pressure gage and temperature sensing device are required. Connect the pressure gage to the service port on th e 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.

C. Perfect Humidity™ System Charging

The system charge for units with the P erf ect Humidity 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. 52-55. To charge systems using the Perfect Humidity Dehumidification system, fully evacuate, recover, and recharge the system to the unit information plate specified charge level.

To check or adjust refrigerant charge on systems using the Perfect Humidity Dehu midi ficati on system, charge per F i g. 52-55.

NOTE: When using the charging charts, it is important that only the subcooling/reheat dehumidification coil liquid line solenoid valv e 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 fan at full speed.

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. 52-55) are to be used ONLY with units having the optional Perfect Humidity subcooling option. DO NOT use standard cha rge ( Fi g. 48-5 1) for units with Perfec t Hu mid i ty system, and DO NOT use Fig. 52-55 for standard units.

D. To Use Cooling Charging Chart, Standard Unit

Take the outdoor ambient temperature and read the suction pressure gage. 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 th e su cti on p res sur e as c ha rge is adj ust ed. Example (Fig. 50):

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

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

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

(Suction temperature may very ± 5 F.) If charging device is used, temperature and pressure read-

ings must be accomplish ed using the charging charts.

UNIT 581B FAN HEIGHT — “A” (in.)

036-060 and 072 (208/230 V) 2.75

072 (460 and 575 V) 3.50

Fig. 47 — Condenser-Fan Adjustment

—39—

Fig. 48 — Cooling Charging Chart, Standard 581B036

Fig. 50 — Cooling Charging Chart, Standard 581B060

Fig. 49 — Cooling Charging Chart, Standard 581B048

Fig. 51 — Cooling Charging Chart, Standard 581B072

—40—

CONDENSER FAN MUST BE OPERATING

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 fan at full speed.

Fig. 52 — Cooling Charging Chart, 581B036 with the

Perfect Humidity Dehumidification System

CONDENSER FAN MUST BE OPERATING

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 fan at full speed.

Fig. 54 — Cooling Charging Chart, 581B060 with the

Perfect Humidity Dehumidification System

CONDENSER FAN MUST BE OPERATING

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 fan at full speed.

Fig. 53 — Cooling Charging Chart, 581B048 with the

Perfect Humidity Dehumidification System

—41—

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 fan at full speed.

Fig. 55 — Cooling Charging Chart, 581B072 with the

Perfect Humidity Dehumidification System

E. To Use Cooling Charging Charts, Units With Perfect Humidity™ Dehumidification System

Refer to charts (Fig. 52-55) to determine the proper leaving condenser pressure and temperature. Example (Fig. 52):

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 fan at full speed.

X. 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 following.

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.

XI. COMBUSTION-AIR BLOWER

Clean periodically to ensure proper airflow and heating efficiency. Inspect blower whee l ev ery fa ll and p eri od ical ly du ri ng 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 blow er 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, by remove 2 setscrews.

5. To remove motor, remove the 4 screws that hold the motor to mounting plate. Remove the moto r cooling fan by removing one setscrew. Then remove nuts that hold motor to mounting plate.

6. To reinstall, reverse the procedure outlined abov e.

XII. LIMIT SWITCH

Remove blower access panel (Fig. 7). Limit switch is located on the fan deck.

XIII. 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. 12). A single LED on the IGC prov i d es 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 ti mes de lay will be res et. Dur ing ser vicing, refer to the label on the control bo x cov er or Table 31 for an explanation of LED error code des criptions.

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

Table 31 — LED Error Code Description*

LED INDICATION ERROR CODE DESCRIPTION

ON Normal Operation

OFF Hardware Failure

1 Flash† Evaporator Fan On/Off Delay Modified 2 Flashes Limit Switch Fault 3 Flashes Flame Sense Fault 4 Flashes 4 Consecutive Limit Switch Faults 5 Flashes Ignition Lockout Fault 6 Flashes Induced-Draft Motor Fault 7 Flashes Rollout Switch Fault 8 Flashes Internal Control Fault 9 Flashes Software Lockout

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 32-36 for additional information.

XIV. 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: When working on gas train, do not hit

or plug orifice spuds.

A. Removal and Replacement of Gas Train (See Fig. 56 and 57)

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, ignitor, 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. 57).

11. To reinstall, reverse the procedure outlined above.

B. 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 cro ss-over port as required.

4. Adjust spark gap. See Fig . 58.

5. Reinstall burners on rack.

6. Reinstall burner rack as described above.

XV. REPLACEMENT PARTS

A complete list of repl acement parts may be obtained from your Bryant distributor upon request. Refer to Fig. 59 for a typical unit wiring schematic.

—42—

INDUCEDDRAFT MOTOR MOUNTING PLATE

BURNER SECTION

INDUCEDDRAFT MOTOR

MANIFOLD PRESSURE TAP

Fig. 56 — Burner Section Details

ROLLOUT SWITCH

FLUE EXHAUST

VESTIBULE PLATE

BLOWER HOUSING

GAS VALV E

Fig. 57 — Burner Tray Details

LOW HEAT UNITS

60,000 BTUH

INPUT

72,000 BTUH

INPUT

581B036060N 581B048060N 581B060060N 581B036071 581B036072 581B048071 581B048072 581B060071 581B060072 581B072072

MEDIUM AND

HIGH HEAT UNITS

90,000 BTUH

INPUT

115,000 BTUH

INPUT

120,000 BTUH

INPUT

150,000 BTUH

INPUT

581B036090N 581B048090N 581B060090N 581B036114 581B036115 581B048114 581B048115 581B060114 581B060115 581B072115 581B048120N 581B060120N 581B048149 581B048150 581B060149 581B060150 581B072150

Fig. 58 — Spark Gap Adjustment

—43—

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. 59 — Typical Wiring Schematic and Component Arrangement (208/230-3-60 Shown)

NOTES:

1. If any of the original wire furnished must be replaced, it must

2. Three phase motors are protected under primary single

3. Use copper conductors only.

4. TRAN is wired for 230 v unit. If unit is to be run with 208 v

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)

Te r mi n al Bl o ck

be replaced with type 90 C wire or its equivalent.

phasing conditions.

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.

—44—

TROUBLESHOOTING

I. UNIT TROUBLESHOOTING

Refer to Tables 32-3 6.

Table 32 — LED Error Code Service Analysis

SYMPTOM CAUSE REMEDY

Hardware Failure (LED OFF)

Fan ON/OFF Delay Modified (LED/FLASH)

Limit Switch Fault (LED 2 Flashes)

Flame Sense Fault (LED 3 Flashes)

4 Consecutive Limit 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)

CAUTION: 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.

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.

IGC board has modified either blower on delay time or blower off delay time.

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 routed and 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 disconnect.

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.

IMPORTANT: Refer to heating troubleshooting for additional heating section troubleshooting information.

LEGEND

IGC — Integrated Gas Unit Controller LED — Light-Emitting Diode

—45—

Table 33 — Heating Service Analysis

PROBLEM CAUSE REMEDY

Burners Will Not Ignite

Inadequate Heating Dirty air filter. Clean or replace filter as necessary.

Poor Flame Characteristics

Burners Will Not Turn Off

Misaligned spark electrodes. Check flame ignition and sensor electrode positioning. Adjust as needed. No gas at main burners. Check gas line for air purge as necessary. After purging gas line of

Water in gas line. Drain water and install drip leg to trap water. No power to unit. Check power supply, fuses, wiring, and circuit breaker. No 24 v power supply to control circuit. Check transformer. Transformers with internal overcurrent protection

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 manifold. Clock gas meter for input. If too low,

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 suit-

Limit switch cycles main burners. Check rotation of blower, thermostat heat anticipator settings,

Too much 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.

air, allow gas to dissipate for at least 5 minutes before attempting to relight unit.

Check gas valve.

require a cool-down period before resetting. Check 24-v circuit breaker; reset if necessary.

increase manifold pressure or replace with correct orifices.

able for individual units, Adjust pulley.

and temperature rise of unit. Adjust as needed.

Check economizer operation. Check all screws around flue outlets and burner compartment.

Tighten as necessary. Cracked heat exchanger. Replace heat exchanger. Overfired unit — reduce input, change orifices, or adjust gas line or mani-

fold 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.

Table 34 — 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. 52-55.

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 to 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 suction

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 lowpressure 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 lowpressure switch if necessary.

line.

2. Replace TXV if stuck open or closed.

Table 35 — Perfect Humidity 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 Superheat. 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. 52-55.

Thermostatic expansion valve (TXV). 1. Check TXV bulb mounting, and secure tightly to suction

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 lowpressure 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 lowpressure switch if necessary.

line.

2. Replace TXV if stuck open or closed.

—46—

Table 36 — Cooling Service Analysis

PROBLEM CAUSE REMEDY

Compressor and Condenser Fan Will Not Start

Compressor Will Not Start But Condenser Fan Runs

Compressor Cycles (Other Than Normally Satisfying Thermostat)

Compressor Operates Continuously Dirty air filter. Replace filter.

Excessive Head Pressure Dirty air filter. Replace filter.

Head Pressure Too Low Low refrigerant charge. Check for leaks, repair, and recharge.

Excessive Suction Pressure High heat load. Check for source and eliminate.

Suction Pressure Too Low Dirty air filter. Replace filter.

Evaporator Fan Will Not Shut Off Time off delay not finished. Wait for 30-second off delay.

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 temperature. Faulty wiring or loose connections in com-

pressor 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 recharge

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.

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

Condenser coil dirty or restricted. Clean coil or remove restriction.

Dirty condenser coil. Clean coil. Refrigerant overcharged. Recover excess refrigerant. Air in system. Recover refrigerant, evacuate system, and

Condenser air restricted or air short-cycling. Determine cause and correct.

Compressor valves leaking. Replace compressor. Restriction in liquid tube. Remove restriction.

Compressor valves leaking. Replace compressor. Refrigerant overcharged. Recover excess refrigerant.

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.

Replace component.

Check wiring and repair or replace.

Determine cause. Replace compressor.

Determine cause and replace.

cause.

to nameplate.

Determine cause and replace.

recharge.

necessary.

—47—

II. ECONOMI$ER IV TROUBLESHOOTING

See Table 37 for EconoMi$er IV logic. A functional vi ew of the Econ oMi$er IV is shown in Fig. 60.

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

A. EconoMi$er IV Preparation

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 star ting troubleshooting.

1. Disconnect power at TR and TR1. All LEDs should be off. Exhaust fan contac ts 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 SO and +. Connect 1.2 kilo-ohm 4074EJM checkout resistor across terminals S

8. Put 620-ohm resistor across terminals S

and +.

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.

B. Differential Enthalpy

To check differential enthalpy:

1. Make sure Econo Mi $ er IV pr epa rat io n p ro ce dure has been performed.

2. Place 620-ohm resistor across SO and +.

3. Place 1.2 kilo-ohm resistor across S

and +. The Free

Cool LED should be lit.

4. Remove 620-ohm resistor across S

and +. The Free

Cool LED should turn off.

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

C. Single Enthalpy

To check single enth alpy:

1. Make sure Econo Mi $ er IV pr epa rat io n p ro ce dure 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.

D. DCV (Demand Controlled Ventilation) and Power Exhaust

To check DCV and Power Exhaust:

1. Make sure Econ o Mi$ er I V pr epa ra tio n proce d ur e has been performed.

2. Ensure terminals A Q and AQ 1 a r e op en . 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 a ctua tor s hou ld dri ve to be tween 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 9 v. 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 afte r the Exhaust LED turns on.

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

E. DCV Minimum and Maximum Position

To check the DCV minimum and maximum position:

1. Make sure Econ o Mi$ er I V pr epa ra tio n proce d ur e has been performed.

2. Connect a 9-v battery to AQ (positive node) and AQ1 (negative node). Th e 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 actua tor should drive to betwee n 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 norm al after completing troubleshooting.

F. Supply-Air Input

To check supply-air input:

1. Make sure Econ o Mi$ er I V pr epa ra tio n proce d ur e 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 norm al after completing troubleshooting.

—48—

G. EconoMi$er IV Troubleshooting Completion

This procedur e i s used to return the EconoMi$er IV t o op e r ation. No troubleshooting or testing is done by performing the following proced ur e.

1. Disconnect power at TR and TR1.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position po tentiometer to previous setting.

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

5. Remove 620-ohm resistor from terminals S

and +.

Table 37 — EconoMi$er IV Input/Output Logic

INPUTS OUTPUTS

Demand Control

Ventilation (DCV)

Below set (DCV LED Off)

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.

High (Free Cooling LED Off)

Low (Free Cooling LED On)

High (Free Cooling LED Off)

Low (Free Cooling LED On)

Enthalpy*

Outdoor Return

Low On On On On Minimum position Closed

High On On On Off Modulating** (between min.

Low On On On On Modulating†† (between min.

High On On On Off Modulating*** Modulating†††

Y1 Y2

On Off On Off Off Off Off Off

On Off Off Off Off Off Off Off Minimum position Closed

On Off On Off Off Off Off Off

On Off Off Off Off Off Off Off

6. Remove 1.2 kilo-ohm checkout resistor from terminals S nals S

and +. If used, reconnect sensor from termi-

and +.

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. Remov e jumper from P to P1. Recon nect device at P and P1.

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

Compressor N Terminal†

Stage1Stage

position and full-open)

position and DCV maximum)

***Modulation is based on the greater of DCV and supply-air sensor

signals, between minimum position and either maximum position (DCV) or fully open (supply-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-air signal).

Occupied Unoccupied

Damper

Modulating** (between closed and full-open)

Modulating†† (between closed and DCV maximum)

Fig. 60 — EconoMi$er IV Functional View

—49—

Access panels

Altitude compensation 35 Barometric flow capacity 17 Burner ignition 42 Burner rack 43 Burner section 43 Burner spark gap 43 Charging chart, refrigerant 40, 41 Clearance 4 CO2 sensor Configuration

Settings 20, 22 Combustion blower wheel 42 Compressor Lubrication 38 Mounting 34 Rotation 34 Condensate drain Cleaning

Location 2, 4 Condenser coil 6 Cleaning 38 Condenser fan 6 Adjustment 38, 39 Control circuit Wiring

Wiring raceway 10 Convenience outlet 14 Demand control ventilation 21 Dehumidification 21 Dimensions 3, 8 Ductwork 2 EconoMi$er IV 15-21 Adjustment 38 Components 15 Controller 20 Damper movement 21 Wiring 17 Electrical connections 9 Electrical data 11, 12 Enthalpy changeover set points 20 Evaporator coil 6 Cleaning 38 Evaporator fan motor Lubrication

Motor data 23, 24 Performance 24-33 Pulley adjustment 23 Pulley setting 6, 22 Speed 6 Factory-installed options Convenience outlet

Disconnect switch 13 EconoMi$er IV 15-21 Humidistat 13 Manual outdoor air damper 14 Perfect Humidity™ dehumidification 13 Filter Cleaning

Installation 16 Size 7 Flue gas passageways 42 Flue hood 4, 9 Freeze protection thermostat 7, 38 Gas connection 7 Gas input 7 Gas piping 4, 9, 34 Gas pressure 1, 7 Heat anticipator settings 7, 9

INDEX

Heat exchanger 7 High flow valves 34 High pressure switch 7 Horizontal units 1, 2 Humidistat 13 Indoor air quality sensor 19 Integrated gas controller 42 Error codes 42, 45 Leak test 34 Light commercial Thermistat™ device 13 Limit switch 42 Liquid propane 7 Low pressure switch 7 Main burners 35, 42 Manual outdoor air damper 14 Mounting Compressor

Unit 4 Natural gas 7 Non-fused disconnect switch 13 Operating limits 2 Operating sequence 36 Cooling 36 EconoMi$er IV 36 Heating 36 Perfect Humidity dehumidification 36, 37 Outdoor air hood 14-16 Outdoor air temperature sensor 16 Outdoor air inlet screens 34 Dimensions 7 Perfect Humidity dehumidification package

13, 14, 23, 36, 39, 41, 46

Physical data 6, 7 Power supply 9 Wiring 10 Pressure, drop Perfect Humidity dehumidification

Pre-Start-Up 34 Pressure switches High pressure

7, 38

Low pressure 7, 38 Refrigerant Charge

6, 38-42

Type 6 Refrigerant service ports 34 Replacement parts 42 Return air filter 7, 34 Return air temperature sensor 19 Rigging unit 4, 5 Roof curb Assembly 1 Dimensions 3 Connector package 3 Leveling tolerances 4 Weight 6 Safety considerations 1 Safety relief 36 Service 38-44 Service ports 34 Slab mount 1 Start-up 34-37 Start-up checklist CL-1 Thermostat 9, 10 Troubleshooting 45-49 Ventilation 36

Weight Corner

EconoMi$er IV 6, 8 Unit 5, 6, 8 Wiring Humidistat 13 EconoMi$er IV 17 Perfect Humidity dehumidification 14 Power connections 10 Thermostat 10 Unit 44

START-UP CHECKLIST

(Remove and Store in Job File)

I. PRELIMINARY INFORMATION

MODEL NO.: _________________________________ SERIAL NO.:________________________________________ DATE:________________________________________ TECHNICIAN:______________________________________

II. PRE-START-UP (insert checkmark in box as each item is completed)



VERIFY THAT JOB SITE V O LTAGE AGREES WITH V O LTAGE LISTED ON RA TIN G PLA TE



VERIFY THA T A LL PACKING MA T ERIA LS HAVE BE EN R EMOVED FROM UNIT



REMOVE ALL SHIPP ING HOLDDO WN BOLTS AND BRAC KETS PE R INST ALL A TION INS TRUCT IONS



VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS



CHECK ALL ELECTRIC A L CONNE CTION S AND TER MINAL S FOR TIG HTNESS



CHECK GAS PIPING FOR LEAKS



CHECK THAT RETURN (INDOOR ) AIR FILTERS ARE CLE AN AND IN PLACE



VERIFY THA T UNIT INST ALLATION IS LEVEL



CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW TIGHTNESS



CHECK TO ENSURE T HAT ELECTRICAL WIRING IS NOT IN CONTA CT W IT H RE FR IGER AN T LINES OR SHARP META L EDGES

CUT ALONG DOTTED LINE



CHECK PULLEY ALIGNM ENT AN D BELT TENSION PER INST ALLA TI ON INSTR UCTIO NS

III. START-UP

ELECTRICAL

SUPPLY VOLTAGE L1- L2 L2-L3 L3-L1 COMPRESSOR AMPS L1 L2 L3 INDOOR-F AN AM PS L1 L2 L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE DB RETURN-AIR TEMPERATURE DB

COOLING SUPPLY AIR DB GAS HEAT SUPPLY AIR DB

PRESSURES

GAS INLET PRESSURE IN . WG GAS MANIFOLD PRESS URE IN. WG REFRIGERANT SUCTION PSIG REFRIGERANT DISCHARGE PSIG



VERIFY REFRIG ERA NT C H AR GE U SING CHARGING TABL ES



VERIFY THAT 3-PHASE SCROLL COMPRESSOR ROTATING IN CORRECT DIRECTION

CUT ALONG DOTTED LINE

Bryant 581B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual