Bryant 558D User Manual

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installation, start-up and service instructions

SINGLE PACKAGE ROOFTOP ELECTRIC HEATING/ELECTRICCOOLING UNITS

Cancels: II 558D-36-4 II 558D-36-5

558D

Sizes 036-072

3to6Tons

2/1/99

IMPORTANT — READ BEFORE INSTALLING

1. Read and become familiar with these installation instructions before installing this unit (see Fig. 1).

2. Be sure the installation conforms to all applicable local and national codes.

3. These instructionscontainimportantinformation for the proper maintenance and repair of this equipment. Retain these instructions for future use.

CONTENTS

Page

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

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

I. Locate the Unit ....................... 3

II. Unit Duct Connections .................. 3

III. Rig and Place Unit ..................... 3

IV. Field Connections ..................... 6

PRE-START-UP ............................17

START-UP ..............................17-28

I. Heating Section Start-Up and Adjustments ....17

II. Cooling Section Start-Up and Adjustments ....18

III. Indoor Airﬂow and Airﬂow Adjustments ......19

CARE AND MAINTENANCE ...................28

I. Air Filter ............................28

SERVICE ...............................28-31

I. Cleaning ............................28

II. Lubrication ..........................29

III. Condenser Fan Adjustment ...............29

IV. Refrigerant Charge .....................30

V. Replacement Parts .....................30

TROUBLESHOOTING ......................32-35

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

WARNING:

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

1. The power supply (volts, phase, and hertz) must correspond to that speciﬁed on unit rating plate.

2. The electrical supply provided by the utility must be sufﬁcient to handle load imposed by this unit.

3. Refer to Locate the Unit section on page 3 and Fig. 2 for locations of electrical inlets, condensate drain, duct connections and required clearances before setting unit in place.

4. This installation must conform with local building codes and with NEC (National Electrical Code) or NFPA (National Fire Protection Association) 54 TIA-54-84-1. Refer to Provincial and local plumbing or wastewater codes and other applicable local codes.

5. Approved for outdoor installation on wood ﬂooring or on class A, B, or C roof covering materials.

Unit is shipped in the vertical airﬂow conﬁguration (see Fig. 1). To convert tohorizontal discharge, remove horizontal duct opening covers. Using the same screws, install covers with insulation-side down (facing outside) over vertical duct openings on the unit. Seals around duct openings must be tight.

All units can be connected into existing duct systems that are

properly sized and designed to handle an airﬂow of 300 to 500 cfm per each 12,000 Btuh of rated cooling capacity.

NOTE: When installing any accessory item, see the manufacturer’s installation instructions packaged with the accessory. A qualiﬁed installer or agency must use only factoryauthorized kits or accessories when modifying this unit.

Before performing service or mainte-

INSTALLATION

SAFETY CONSIDERATIONS

Recognize safety information. This is the safety-alert symbol ( ). When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

Understand the signal words — DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. Danger identiﬁes the most serious hazards which will result in severe personal injury or death. Warning indicates a condition that could result in personal injury. Caution is used to identify unsafe practices which would result in minor personal injury or product and property damage.

Fig.1—Typical Unit

*Indicates horizontal center of gravity. †Indicates vertical center of gravity.

NOTES:

1. Dimensions in [ ] are in millimeters.

2. Center of gravity.

3. Direction of airﬂow.

4. Ductwork to be attached to accessory roof curb only.

5. Minimum clearance (local codes or jurisdiction may prevail): a. Bottom of basepan to combustible surfaces (when not using curb), 0 inches. On

horizontal discharge units with electric heat, 1 in. clearance to ductwork for 1 foot.

b. Condenser coil, for proper airﬂow, 36 in. one side, 12 in. the other. The side getting

the greater clearance is optional. c. Overhead, 60 in. to assure proper condenser fan operation. d. Between units, control box side, 42 in. per National Electrical Code (NEC). e. Between unit and ungrounded surfaces, control box side, 36 in. per NEC. f. Between unit and block or concrete walls and other grounded surfaces, control box

side, 42 in. per NEC. g. Horizontal supply and return end, 0 inches.

6. With the exception of the clearances as stated in Notes 5a, b, and c, a removable fence or barricade requires no clearance.

7. Units may be installed on combustible ﬂoors made from wood or class A, B, or C roof covering material.

CONNECTION SIZES

A 1

⁄89 dia [28.6] ﬁeld power supply hole

⁄49-14 NPT condensate drain

C 1

⁄89 dia [35] power supply knockout

D 29 dia [50.8] power supply knockout

UNIT

STD UNIT

WEIGHT

ECONOMIZER WEIGHT

DURABLADE PARABLADE

CORNER WEIGHT

(A)

CORNER WEIGHT

(B)

CORNER WEIGHT

(C)

CORNER WEIGHT

(D)

Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg

558D036 365 165.6 34 15.4 42 19.1 126 57.2 89 40.4 111 50.3 39 17.7 558D048 375 170.1 34 15.4 42 19.1 128 58.1 90 40.8 114 51.7 43 19.5 558D060 395 179.2 34 15.4 42 19.1 132 59.9 94 42.6 120 54.4 49 22.2 558D072 470 213.2 34 15.4 42 19.1 148 67.1 103 46.7 155 70.3 64 29.0

Fig. 2 — Base Unit Dimensions

—2—

I. LOCATE THE UNIT A. Clearance

Maintain clearance around and above unit to provide minimum distance from combustible materials, proper airﬂow,and service access (see Fig. 2 and 3).

Minimum clearance to combustibles is 0 in. on all sides. Minimum clearance to block walls or any other grounded sur-

face is 42 in. on all sides. Minimum clearance of 36 in. should be providedon side with

outdoor-air intake, if unit is so equipped. Minimum clearance between unit and other electrically live

parts is 48 inches. Do not install unit in an indoor location. Do not locate unit

air inlets near exhaust vents or other sources of contaminated air.

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

Slab mounted units should be at least 4 in. above the highest expected water, ﬂood and runoff levels. Do not use theunit if it has been under water.

IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket with the roof curb as shown in Fig. 4. Improperly applied gasket can also result in air leaks and poor unit performance.

Curb should be level. Unit leveling tolerances are shown in Fig. 5. Correct leveling tolerance is necessary for unit drain to function properly.

C. 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.

II. UNIT DUCT CONNECTIONS

On vertical units, secure all ducts to roof curb and building structure. Do not connect ductwork to unit. On horizontal units, duct ﬂanges should be attached to horizontal openings and all ductwork should be secured to ﬂanges.

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.

Aminimum clearance is not required around ductwork. Cabinet return-air static shall not exceed −0.20 in. wgwith PARABLADE economizer, −0.35 in. wg with Durablade economizer, or −0.45 in. wg without economizer.

NOTE: Connection must be made to roof curb before unit is set in place.

Fig. 3 — Service and Operational Clearances

B. Roof Curb Mount

Assemble and install accessory roof curb in accordance with instructions shipped with curb. See Fig. 4. Install insulation, cant strips, rooﬁng felt, and counter ﬂashing as shown. Duct- work must be attached to curb. If electric or control power is to be routed through the curb, attach the accessorythru-thebottom connections to the basepan in accordance with the accessory installation instructions. Accessory electric connections must be installed before unit is in place on roof curb.

III. 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 and maximum weight are shown in Table 1 and Fig. 6.

Lifting holes are provided in base rails as shown in Fig. 6. Refer to rigging instructions on unit.

IMPORTANT: If unit has forklift protection skids, be sure to remove forklift protection skids from under unit before setting unit in place.

A properly positioned unit will have the following clearances between unit and roof curb: and base rails on each side and front of unit; 1

⁄4-in. clearance between roof curb

⁄32-in. clearance between roof curb and rear of unit. See Fig. 4, Views A-A and C-C.

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

—3—

ROOF CURB ACCESSORY

CRRFCURB001A00

CRRFCURB002A00

‘‘A’’ UNIT SIZE

149

[356]

558D036-072

249

[610]

NOTES:

1. Roof curb accessory is shipped unassembled.

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.

7. Direction of airﬂow.

—4—

UNIT SIZE ‘‘B’’ ‘‘C’’

⁄

558D036-072

[551]

169

[406]

‘‘D’’Alt

Drain Hole

13⁄

[44.5]

Power Control Connector Package Accessory

⁄49 NPT1⁄29 NPT

CRBTMPWR001A00

(THRU-THE-BOTTOM)

CRBTMPWR002A00

(THRU-THE-BOTTOM)

Fig. 4 — Roof Curb

Table 1 — Speciﬁcations

BASE UNIT 558D 036 048 060 072 NOMINAL CAPACITY (tons) 3456 OPERATING WEIGHT (lb)

Unit 365 375 395 470 Durablade Economizer 34 34 34 34 PARABLADE Economizer 42 42 42 42 Roof Curb 115 115 115 115

COMPRESSOR TYPE Reciprocating Reciprocating Reciprocating Scroll

Quantity 1111 Oil (oz) 50 50 50 54

REFRIGERANT TYPE R-22

Operating Charge (lb-oz) 3-6 5-8 7-0 7-11

CONDENSER COIL Enhanced Copper Tubes, Aluminum Lanced Fins

Rows...Fins/in. 1...17 1...17 2...17 2...17 Total Face Area (sq ft) 7.36 13.19 10.42 10.42

CONDENSER FAN Propeller Type

Nominal Cfm 3500 4000 4000 4000 Quantity...Diameter (in.) 1...22.0 1...22.0 1...22.0 1...22.0 Motor Hp...Rpm Watts Input (Total) 325 325 325 325

EVAPORATOR COIL Enhanced Copper Tubes, Aluminum Double-Wavy Fins

Rows...Fins/in. 2...15 2...15 3...15 4...15 Total Face Area (sq ft) 4.17 5.5 5.5 5.5

EVAPORATOR FAN Centrifugal Type

Quantity...Size (in.) Std 1...10 x 10 1...10 x 10 1...11 x 10 1...10 x 10 Type Drive Std Direct Direct Direct Belt Nominal Cfm Std 1200 1600 2000 2400 Maximum Continuous Bhp Std .34 .75 1.20 2.40 Motor Frame Size Std 48 48 48 56 Nominal Rpm High/Low Std 860/800 1075/970 1075/970 — Fan Rpm Range Std — — — 1070-1460 Motor Bearing Type Ball Ball Ball Ball

Maximum Allowable Rpm 2100 2100 2100 2100 Motor Pulley Pitch Diameter Min/Max (in.) Std — — — 2.8/3.8

Nominal Motor Shaft Diameter (in.) Std Fan Pulley Pitch Diameter (in.) Std ———4.5 Belt, Quantity...Type...Length (in.) Std — — — 1...A...40 Pulley Center Line Distance (in.) Std — — — 14.7-15.5 Speed Change per Full Turn of Std ———80

Movable Pulley Flange (rpm) Alt 65 70 80 —

Movable Pulley Maximum Full Turns Std ———5

From Closed Position Alt 555—

Factory Setting Std ———3 Factory Speed Setting (rpm) Std — — — 1225 Fan Shaft Diameter at Pulley (in.)

HIGH-PRESSURE SWITCH (psig)†

Standard Compressor Internal Relief (Differential) 450±50 500±50 Cutout 428 428 Reset (Auto.) 320 320

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

Cutout 7±3 Reset (Auto.) 22±7

FREEZE-PROTECTION THERMOSTAT (F)†

Opens 30±5 Closes 45±5

OUTDOOR-AIR INLET SCREENS Cleanable

Quantity...Size (in.) 1...20 x 24 x 1

RETURN-AIR FILTERS Throwaway

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

Alt 1...10 x 10 1...10 x 10 1...10 x 10 — Alt Belt Belt Belt — Alt 1200 1600 2000 — Alt 1.00 1.00 1.3/2.4* — Alt 48 48 48/56* — Alt ———— Alt 760-1090 840-1185 900-1300 —

Alt 1.9/2.9 1.9/2.9 2.4/3.4 — Alt Alt 4.5 4.0 4.5 — Alt 1...A...39 1...A...36 1...A...39 — Alt 10.0-12.4 10.0-12.4 14.7-15.5 —

Alt 333— Alt 890 980 1060 —

LEGEND

Bhp — Brake Horsepower

*Single phase units — 1.3 bhp/48 frame.

Three phase units — 2.4 bhp/56 frame.

†Requires an optional or accessory controls upgrade kit.

⁄4...1100

⁄

⁄4...1100

2 2

⁄

⁄4...1100

⁄

⁄4...1100

2 8

⁄

—

⁄

—5—

MAXIMUM ALLOWABLE DIFFERENCE (in.)

A-B B-C A-C

0.5 1.0 1.0

Fig. 5 — Unit Leveling Tolerances IV. FIELD CONNECTIONS A. External Trap Condensate Drain

The unit’s

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

When using the standard side drain connection, 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 side connection. See Fig. 7. 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 freezeup. See Fig. 8. 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.

B. Field Duct Connections NOTE: The design and installation of the duct system must

be in accordance with NFPA standards for the installation of nonresidence-type air conditioning and ventilating systems, NFPANo. 90A or residence-type, NFPANo. 90B, and/or local codes and ordinances.

Adhere to the following criteria when selecting, sizing and installing the duct system:

1. Remove appropriate panels from unit to obtain either horizontal or vertical discharge. If units are installed in horizontal discharge applications, remove vertical discharge duct covers, save screws and install covers over vertical duct openings.

2. Select and size ductwork, supply-air registers and returnair grilles according to ASHRAE (American Society of Heating, Refrigeration and Air-Conditioning Engineers) recommendations.

CAUTION:

When drilling the duct system fastening holes into the side of the unit for duct ﬂanges, be careful not to puncture the coil or coil tubes. See Fig. 9.

MAX

UNIT

558D036 415 188 558D048 425 193 558D060 445 202 558D072 520 236

NOTES:

1. Dimension in ( ) is in millimeters.

2. 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.

3. Weights do not include economizer. See Table 1 for economizer weights.

WEIGHT

Lb Kg in. mm in. mm in. mm

73.69 1872 35.00 889 33.35 847

Fig. 6 — Rigging Details

‘‘A’’ ‘‘B’’ ‘‘C’’

CAUTION: All panels must be in place when

rigging.

—6—

Fig. 7 — Internal Trap Condensate Drain

Fig. 9 — Location of Coil Area Not to be Drilled

C. Electrical Connections

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

ference. A 4-in. trap is recommended.

Fig. 8 — External Trap Condensate Drain

3. Use ﬂexibletransition between rigid ductwork andunit

to prevent transmission of vibration. The transition may be screwed or bolted to duct ﬂanges. Use suitable gaskets to ensure weather- and airtight seal.

4. When horizontal return is used, install external ﬁeld-

supplied air ﬁlter(s) in return-air ductwork where it is easily accessible for service. Recommended ﬁlter sizes are shown in Table 1.

5. Size all ductwork for maximum required airﬂow(either

heating or cooling) for unit being installed.Avoidabrupt duct size increases or decreases.

6. Adequately insulate and weatherproof all ductwork

located outdoors. Insulate ducts passing through unconditioned space, and use vapor barrier in accordance with latest issue of SMACNA (Sheet Metal and Air Conditioning Contractors National Association) and ACCA (Air Conditioning Contractors NationalAssociation) minimum installation standards for heating and air conditioning systems. Secure all ducts to building structure.

A minimum clearance to combustibles is not required around ductwork on vertical discharge units. On horizontal discharge units, a minimum clearance of one in. is required for the ﬁrst 12 in. of ductwork.

7. Flash, weatherproof and vibration-isolate all openings

in building structure in accordance with local codes and good building practices.

WARNING:

The unit cabinet must have an uninterrupted, unbroken, electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to the unit ground lug in the control compartment or conduit approved for electrical ground when installed in accordance with NEC ANSI (American National Standards Institute)/NFPA, latest edition, (in Canada, Canadian Electrical Code CSA [Canadian StandardsAssociation] C22.1); and local electrical codes. Failure to adhere to this warning could result in personal injury.

CAUTION:

Failure to obey the following precautions could result in damage to the unit being installed:

Field Power Supply (Fig. 10 and 11)

1. Make allelectrical connections in accordance with NEC ANSI/NFPA,latest edition, and local electrical codes governing such wiring. In Canada, all electrical connections must be in accordance with CSA Standard C22.1 Canadian Electrical Code Part 1 and applicable local codes. Refer to unit wiring diagram.

2. A unit disconnect switch is required within sight from the unit. The disconnectswitch may be mounted on the unit corner post. When mounting disconnect switch, be sure the unit rating plate is not obstructed.

3. Use only copper conductor for connections between ﬁeldsupplied electrical disconnect switch and unit. The use of aluminum wire is not recommended. Maximum wire size is number 2 AWG (American Wire Gage) on units without heat. The maximum wire size is number 2/0 A WG on units with heat.

4. Insulate low-voltage wires for highest voltage contained within conduit when low-voltage control wires are run in same conduit as high-voltage wires.

5. Do not damage internal components when drilling through any panel to mount electrical hardware, conduit, etc.

High-Voltage Connections (Fig. 10) The unit must have a separate electrical service with a ﬁeld-

supplied, waterproof, fused, disconnect switch mounted at, or within sight of, the unit. Refer to the unit rating plate for maximum fuse/circuit breaker size and minimum circuit amps (ampacity) for wire sizing. Be sure disconnect switch does not obstruct unit rating plate.

—7—

The ﬁeld-supplied disconnect switch box may be mounted on the unit’s end panel or on the corner post. Mount disconnect box on the left side of the rating platewhen mounting on the unit’s end panel. Do not mount the disconnect box over the unit rating plate. When mounting disconnect box on corner post, secure disconnect box to corner post and condenser coil top cover. See Fig. 12.

A disconnect box mounting space is available when an optional or accessory condenser coil grille is used. Mount the disconnect on the sheet metal provided with the condenser coil grille. The sheet metal is located adjacent to the corner post on the left side of the power wiring access panel.

Install ﬁeld wiring as follows:

1. Connect ground lead to chassis ground connection when using separate ground wire.

2. Install conduit between disconnect and power wiring access panel. Insert conduit through power supply knockout opening. See Fig. 12.

3. Install power lines to power wiring leads.

4. Pigtails are provided for ﬁeld power connections and are located inside the power wiring access panel. See Fig. 11. Use factory-supplied splices or Underwriters’ Laboratories (UL) approved copper connector.

Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate (see Table2). On 3-phase units, voltagesbetween phases must be balanced within 2% and the current within 10%. Usethe formula shown in the legend for Table 2, Note 2 to determine the percent 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 warranty.

Special Procedures for 208-V Operation

Control Voltage Connection Install a factory-approved room thermostat. Locate the ther-

mostat on an inside wall in the space to be conditioned where it will not be subjected to either a cooling or heating source or direct exposure to sunlight. Mount the thermostat 4 to 5 ft above the ﬂoor. See accessory installation instructions.

NOTE: For wire runs up to 50 ft, use number 18 AWG insulated wire (35 C minimum). For 51 to 75 ft, use number 16 AWG insulated wire (35 C minimum). For 76 to 150 ft, use number 14 AWGinsulated wire (35 C minimum). All wire larger than number 18 AWGcannot be connected directly to the thermostat and will require a junction box and splice at the thermostat. Feed control wires through the raceway located between the condenser coil top cover and power wiring access panel. See Fig. 12. Connect control wires to the low-voltage connections located inside low-voltage access panel. See Fig. 10, 11, and 13 for connections. The barrier provides the UL required clearance between high- and low-voltage wiring.

NOTE: If thru-the-bottom power connections are used refer to the accessory installation instructions for information on power wiring. Refer to Fig. 2 for drilling holes in basepan.

DANGER: Make sure that the power supply to the unit is switched OFF before making any wiring changes. Electrical shock can cause personal injury or death.

For operation on 208 v, disconnect the transformer primary orange lead from the contactor.See the unit wiring label. Remove the tape and cover from the terminal on the end of the transformer primary red lead. Save the cover. Connect the red lead to the contactor terminal from which the orange lead was disconnected.

Using the cover removed from the red lead, insulate the loose terminal on the orange lead. Wrap the cover with electrical tape so that the metal terminal cannot be seen.

LEGEND

C—Contactor CAP — Capacitor GND — Ground IFC — Indoor (Evaporator) Fan Contactor IFR — Indoor (Evaporator) Fan Relay NEC — National Electrical Code OFC — Outdoor (Condenser) Fan Contactor TB — Terminal Block TDR — Time-Delay Relay TRAN — Transformer

LEGEND

AHA — Adjustable Heat Anticipator CC — Cooling Compensator TC — Thermostat-Cooling

NOTES:

1. The Y2 wiring is connected when an economizer is used.

2. Connect W1 when unit is equipped with an accessory 1-module heater package. The W2 wiring is connected when unit is equipped with an accessory 2-module heater package.

TH — Thermostat-Heating

Field Wiring Factory Wiring

Fig. 11 — Low-Voltage Connections

Fig. 10 — Field Wiring Connections

—8—

UNIT DISCONNECT (NOT SHOWN)

FIELD CONTROL WIRING RACEWAY (HIDDEN)

CONTROL BOX ACCESS PANEL

POWER WIRING SIDE PANEL

LOW-VOLTAGE ACCESS PANEL

KNOCKOUT OPENING

POWER WIRING ACCESS PANEL

EVAPORATOR FAN ACCESS PANEL

END PANEL (HIDDEN)

CONDENSER FAN

RACEWAY (HIDDEN)

C X

LOW-VOLTAGE WIRING CONNECTION

FILTER ACCESS PANEL

COMPRESSOR (COMPRESSOR ACCESS PANEL NOT SHOWN)

REFRIGERANT SERVICE PORT ACCESS P ANEL (NOT SHOWN)

CONDENSER COIL

CONTROL BOX ACCESS PANEL

LEFT CORNER POST

CONDENSER COIL TOP COVER

RIGHT CORNER POST

CONTROL BOX

Fig. 13 — Low-Voltage Location

Transformer Circuit Breaker (Fig. 14) The unit transformer contains an automatic-reset overcur-

rent protector for control circuit protection. If this device trips, it may reset without warning and start the heating or cooling section of this product. Use caution when servicing: If overcurrent protector continues to trip, there is a problem in the low-voltage electrical circuit (i.e., electrical short, ground or transformer overload). Disconnect power, correct the condition, and check for normal unit operation.

CONDENSER COIL

Fig. 12 — Typical Component Location

Fig. 14 — Transformer Label

—9—

UNIT 558D

036

(3 Ton)

048

(4 Ton)

NOMINAL

V-PH-Hz

208/230-1-60

208/230-3-60

460-3-60

575-3-60

208/230-1-60

208/230-3-60

460-3-60

575-3-60

Table 2 — Electrical Data

VOLTAGE

IFM

TYPE

Std

Alt 4.9

Std

Alt 4.9

Std

Alt 2.1

Std

Alt 2.1\ — — 7.4 15 7 34

Std

Alt 4.9

Std

Alt 4.9

Std

Alt 2.1

Std

Alt 2.1\ — — 10.9 15 11 43

RANGE

Min Max RLA LRA FLA FLA Nominal kW FLA MCA MOCP† FLA LRA

187 254 16.9 86.7 1.4

187 254 11.7 65.1 1.4

414 508 5.1 32.8 0.8

518 632 4.1 27.0 0.8\

187 254 23.3 118.0 1.4

187 254 15.4 90.0 1.4

414 508 8.3 45.0 0.8

518 632 6.4 36.0 0.8\

COMPR

(each)

OFM IFM ELECTRIC HEAT* POWER SUPPLY

— — 25.3/ 25.3 35/ 35 24/ 24 97/ 97

3.3/ 4.4 15.9/18.3 25.3/ 26.4 35/ 35 24/ 24 97/ 97

2.8

1.3

1.3\ — — 6.8 15 7 31

3.5

1.8

1.8\ — — 10.6 15 10 42

4.9/ 6.5 23.8/27.3 32.8/ 37.4 35/ 40 30/ 34 97/ 97

6.5/ 8.7 31.4/36.2 42.8/ 48.8 45/ 50 39/ 45 97/ 97

7.9/10.5 37.9/43.8 50.9/ 58.2 60/ 60 47/ 54 97/ 97

9.8/13.0 47.1/54.6 62.2/ 71.2 70/ 80†† 57/ 66 97/ 97 — — 27.4/ 27.4 35/ 35 27/ 27 102/102

3.3/ 4.4 15.9/18.3 27.4/ 29.0 35/ 35 27/ 27 102/102

4.9/ 6.5 23.5/27.1 35.5/ 40.0 35/ 40 33/ 37 102/102

6.5/ 8.7 31.4/36.3 45.4/ 51.4 45/ 60 42/ 47 102/102

7.9/10.5 37.9/43.8 53.5/ 60.8 60/ 60 49/ 56 102/102

9.8/13.0 46.9/54.2 64.8/ 73.8 70/ 80†† 60/ 68 102/102 — — 18.8/ 18.8 25/ 25 18/ 18 76/ 76

3.3/ 4.4 9.2/10.6 18.8/ 18.8 25/ 25 18/ 18 76/ 76

4.9/ 6.5 13.6/15.6 20.4/ 23.0 25/ 25 19/ 21 76/ 76

6.5/ 8.7 18.1/20.9 26.2/ 29.7 30/ 30 24/ 27 76/ 76

7.9/10.5 21.9/25.3 30.9/ 35.1 35/ 40 28/ 32 76/ 76

12.0/16.0 33.5/38.6 45.3/ 51.7 50/ 60 42/ 48 76/ 76 — — 20.9/ 20.9 25/ 25 21/ 21 80/ 80

3.3/ 4.4 9.2/10.6 20.9/ 20.9 25/ 25 21/ 21 80/ 80

4.9/ 6.5 13.6/15.6 23.1/ 25.7 25/ 25 21/ 24 80/ 80

6.5/ 8.7 18.1/20.9 28.8/ 32.3 30/ 35 26/ 30 80/ 80

7.9/10.5 21.9/25.3 33.5/ 37.7 35/ 40 31/ 35 80/ 80

12.1/16.0 33.5/38.6 47.9/ 54.4 50/ 60 44/ 50 80/ 80 — — 8.5 15 8 38

6.0 7.2 10.6 15 10 38

8.8 10.6 14.9 15 14 38

11.5 13.8 18.9 20 17 38

14.0 16.8 22.7 25 21 38 — — 9.3 15 9 41

6.0 7.2 11.6 15 10 41

8.8 10.6 15.9 20 15 41

11.5 13.8 19.9 20 18 41

14.0 16.8 23.7 25 22 41

— — 34.0/ 34.0 40/ 40 32/ 32 128/128

3.3/ 4.4 15.9/18.3 34.0/ 34.0 40/ 40 32/ 32 128/128

6.5/ 8.7 31.4/36.3 43.6/ 49.7 45/ 50 40/ 46 128/128

9.8/13.0 46.9/54.2 63.0/ 72.1 70/ 80†† 58/ 66 128/128

13.1/17.4 62.8/72.5 82.9/ 95.0 90/100†† 76/ 87 128/128

15.8/21.0 75.8/87.5 99.2/113.8 100/125†† 91/105 128/128 — — 35.4/ 35.4 40/ 40 34/ 34 129/129

3.3/ 4.4 15.9/18.3 35.4/ 35.4 40/ 40 34/ 34 129/129

6.5/ 8.7 31.4/36.3 45.4/ 51.4 45/ 60 42/ 47 129/129

9.8/13.0 46.9/54.2 64.8/ 73.8 70/ 80†† 60/ 68 129/129

13.1/17.4 62.8/72.5 84.7/ 96.8 90/100†† 78/ 89 129/129

15.8/21.0 75.8/87.5 100.9/115.5 100/125†† 93/106 129/129 — — 24.2/ 24.2 30/ 30 24/ 24 100/100

4.9/ 6.5 13.6/15.6 24.2/ 24.2 30/ 30 24/ 25 100/100

6.5/ 8.7 18.1/20.9 27.0/ 30.5 30/ 35 27/ 30 100/100

12.0/16.0 33.4/38.5 46.1/ 52.5 50/ 60 45/ 51 100/100

15.8/21.0 43.8/50.5 59.1/ 67.5 60/ 70†† 58/ 64 100/100 — — 25.6/ 25.6 30/ 30 24/ 24 101/101

4.9/ 6.5 13.6/15.6 25.6/ 25.7 30/ 30 24/ 24 101/101

6.5/ 8.7 18.1/20.9 28.8/ 32.3 30/ 35 25/ 29 101/101

12.0/16.0 33.4/38.5 47.8/ 54.2 50/ 60 43/ 49 101/101

15.8/21.0 43.8/50.5 60.8/ 69.3 60/ 70†† 55/ 63 101/101 — — 13.0 15 13 51

6.0 7.2 13.0 15 13 51

11.5 13.8 19.5 20 18 51

14.0 16.6 23.0 25 21 51

23.0 27.7 36.8 40 34 51 — — 13.3 15 13 52

6.0 7.2 13.3 15 13 52

11.5 14.0 19.9 20 18 52

14.0 16.6 23.4 25 22 52

23.0 27.7 37.2 40 34 52

DISCONNECT

SIZE**

—10—

Table 2 — Electrical Data (Cont)

UNIT 558D

NOMINAL

V-PH-Hz

TYPE

VOLTAGE

IFM

RANGE

Min Max RLA LRA FLA FLA Nominal kW FLA MCA MOCP† FLA LRA

Std

208/230-1-60

187 254 28.8 147 1.4

Alt 8.8

Std

060

(5 Ton)

208/230-3-60

187 254 16.3 114 1.4

Alt 5.8

Std

460-3-60

414 508 7.4 64 0.8

Alt 2.6

575-3-60

Std

518 632 6.2 52 0.8\

Alt 2.6\ — — 11.2 15 12 59

208/230-3-60 Std 187 254 23.6 146.0 1.4 5.2

072

(6 Ton)

460-3-60 Std 414 508 10.6 73.0 0.8 2.6

575-3-60 Std 518 632 8.5 58.4 0.8\ 2.6\ — — 13.3 20 14 75

IMPORTANT: Optional, alternate evaporator-fan motor and drive are not available for 558D072 units. Contact your local representative for more information about ﬁeldinstalled motors.

COMPR — Compressor FLA — Full Load Amps HACR — Heating, Air Conditioning and Refrigeration IFM — Indoor (Evaporator) Fan Motor LRA — Locked Rotor Amps MCA — Minimum Circuit Amps MOCP — Maximum Overcurrent Protection NEC — National Electrical Code OFM — Outdoor (Condenser) Fan Motor RLA — Rated Load Amps

*Available for ﬁeld-installed accessory heaters only. Heater capacity (kW) is based on

heater voltage of 208 v,240 v or 480 v. If power distribution voltage to unit varies from rated heater voltage, heater kW will vary accordingly.

†Fuse or HACR circuit breaker.

**Used to determine minimum disconnect per NEC.

††Fusing single-point box provides the required branch circuit protection.

\Ampacities are based on 460 v. MCA and MOCP are based on 575 v.

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.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply voltage is greater than 2%.

LEGEND

Use the following formula to determine the percent of voltage imbalance.

COMPR

(each)

OFM IFM ELECTRIC HEAT* POWER SUPPLY

DISCONNECT

SIZE**

— — 43.3/ 43.3 60/ 60 42/ 42 159/159

4.9/ 6.5 23.5/27.1 43.3/ 43.3 60/ 60 42/ 42 159/159

5.9

3.2

6.5/ 8.7 31.4/36.3 46.6/ 52.7 60/ 60 43/ 49 159/159

9.8/13.0 46.9/54.2 66.0/ 75.1 70/ 80†† 61/ 69 159/159

13.0/17.4 62.8/72.5 85.9/ 98.0 90/100†† 79/ 90 159/159

15.8/21.0 75.8/87.5 102.2/116.8 110/125†† 94/107 159/159 — — 46.2/ 46.2 60/ 60 45/ 45 162/162

4.9/ 6.5 23.5/27.1 46.2/ 46.2 60/ 60 45/ 45 162/162

6.5/ 8.7 31.4/36.3 49.9/ 55.9 60/ 60 46/ 52 162/162

9.8/13.0 46.9/54.2 69.3/ 78.3 70/ 80†† 64/ 72 162/162

13.0/17.4 62.8/72.5 89.2/101.3 90/110†† 82/ 93 162/162

15.8/21.0 75.8/87.5 105.5/120.0 110/125†† 97/110 162/162 — — 27.7/ 27.7 35/ 35 27/ 27 126/126

4.9/ 6.5 13.6/15.6 27.7/ 27.7 35/ 35 27/ 27 126/126

7.9/10.5 21.9/25.3 34.7/ 38.9 40/ 40 32/ 36 126/126

12.0/16.0 33.4/38.5 49.1/ 55.5 50/ 60 46/ 51 126/126

15.8/21.0 43.8/50.5 62.1/ 70.5 70/ 80†† 57/ 65 126/126

19.9/26.5 55.2/63.8 76.4/ 87.1 80/ 90†† 70/ 80 126/126 — — 26.8/ 26.8 40/ 40 27/ 27 125/125

4.9/ 6.5 13.6/15.6 26.8/ 26.8 40/ 40 27/ 27 125/125

7.9/10.5 21.9/25.3 35.3/ 39.5 45/ 45 32/ 36 125/125

12.0/16.0 33.4/38.5 49.6/ 56.0 60/ 60 45/ 51 125/125

15.8/21.0 43.8/50.5 62.6/ 71.1 70/ 80†† 57/ 65 125/125

19.9/26.5 55.2/63.8 77.0/ 87.6 80/100†† 70/ 80 125/125 — — 13.3 20 13 69

6.0 7.2 13.3 20 13 69

11.5 13.8 21.3 25 20 69

14.0 16.8 25.0 30 23 69

23.0 27.7 38.6 40 36 69

25.5 30.1 41.6 45 38 69 — — 12.7 20 12 70

6.0 7.2 12.7 20 12 70

11.5 13.8 21.0 25 19 70

14.0 16.8 24.8 30 22 70

23.0 27.7 38.3 45 35 70

25.0 30.1 41.3 45 38 70

3.2\ — — 11.8 15 12 57

— — 36.1/ 36.1 45/ 45 35/ 35 191/191

4.9/ 6.5 13.6/15.6 36.1/ 36.1 45/ 45 35/ 35 191/191

7.9/10.5 21.9/25.3 36.1/ 38.1 45/ 45 35/ 35 191/191

12.0/16.0 33.4/38.4 48.2/ 54.6 50/ 60 44/ 50 191/191

15.8/21.0 43.8/50.5 61.2/ 69.6 70/ 70†† 56/ 64 191/191

19.9/26.5 55.2/63.8 75.6/ 86.2 80/ 90†† 70/ 79 191/191 — — 16.7 20 16 90

6.0 7.2 16.7 20 16 90

11.5 13.8 20.5 25 19 90

14.0 16.8 24.3 25 22 90

23.0 27.8 37.8 40 35 90

25.5 30.7 41.6 45 38 90

% Voltage Imbalance

max voltage deviation from average voltage

= 100 x

Example: Supply voltage is 460-3-60.

NOTE: The 575-v units are Canada only.

Determine maximum deviation from average voltage. (AB) 457 - 452=5v (BC) 464 - 457=7v (AC) 457 - 455=2v

Maximum deviation is 7 v. Determine percent 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.

average voltage

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

Average Voltage =

457

= 1.53%

452 + 464 + 455

1371

= 457

—11—

D. Accessory Installation

At this time, any required accessories should be installed on the unit. Control wiring information is provided in the unit wiring diagram. Refer to Accessory Installation Instructions provided with accessory.

E. Optional Outdoor-Air Damper Installation

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 ﬁlter access panel by raising panel and swinging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove ﬁlter access panel. Remove and save outdoor-air opening panel and screws. See Fig. 15.

3. Separate hood and screen from basepan by removing the 4 screws and brackets securing them. Save all screws and discard brackets.

4. Replace outdoor-air opening panel.

5. Place hood on front of outdoor air opening panel. See Fig. 16 for hood details. Secure top of hood with the 4 screws removed in Step 3. See Fig. 17.

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

7. Align screw holes on hood with screw holes on side of manual outdoor-air damper assembly. See Fig. 16 and

17. Secure hood with 6 screws from Step 6.

8. For proper quantity of ventilation air, adjust minimum position setting of the damper blade by adjusting the manual outdoor-air adjustment screws on the front of the damper blade. See Fig. 15. Slide blade vertically until it is in the appropriate position determined by Fig. 18. Tighten screws.

9. Remove and save 4 screws currently on sides of hood. Insert screen. Secure screen to hood using the4 screws. See Fig. 17.

Fig. 16 — Outdoor-Air Hood Details

OUTDOOR AIR OPENING PANEL

Fig. 15 — Damper Panel With Outdoor-Air

Damper Installed

Fig. 17 — Manual Outdoor-Air Damper With HoodAttached

Fig. 18 — Position Setting

—12—

F. Optional Durablade Economizer

The optional economizer hood assembly is packaged and shipped in the ﬁlter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical position.

NOTE: Horizontal discharge block-off plate is shipped with the air hood package. If unit is to be used for vertical discharge application, discard this plate.

Assembly:

1. Determine if ventilation air is required for building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 6.

2. Remove ﬁlter access panel by raising panel and s winging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove ﬁlter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 19. Remove optional outdoor-air damper hood package from ﬁlter section.

3. Assemble outdoor-air hood top and side plates as shown in Fig. 20. Install seal strips on hood top and sides. Put aside screen retainer and retainer screw for later assembly. Do not attach hood to unit at this time.

4. To convert to horizontal discharge application:

a. Rotate the economizer 90 degrees until the econo-

mizer motor faces the condenser section (see Fig. 21).

b. Rotate barometric relief damper hinge 90 degrees. Baro-

metric relief damper should open vertically to operate properly.

c. Install horizontal discharge block-off plate over the

opening on the access panel. (Block-off plate MUST be installed before installing hood assembly.) See Fig. 22.

5. Insert economizer plug into economizer harness. Remove tape from barometric relief damper. See Fig. 23.

6. If ventilation air is not required, proceed to Step 7. If ventilation air is required, determine the minimum position setting for required airﬂow. See Fig. 24. Adjust minimum position setting by adjusting the screws on the position setting bracket. Slide bracket until the top screw is in the position determined by Fig. 24. Tighten screws.

7. Remove tape from outdoor-air thermostat (OAT). Fasten OAT to inside of hood usingscrews and speed clips provided (see Fig. 25). Make sure OAT terminals are positioned up.

8. Replace outdoor-air opening panel using screws from Step 2. Replace ﬁlter access panel. Ensure the ﬁlter access panel slides along the tracks and is securely engaged.

9. Fasten hood top and side plate assembly (Fig. 20) to outdoor-air opening panel with screws provided.

10. Place knob, supplied with economizer, on OAT. See Fig. 25. Set for 3° F below indoorroom thermostat setting. If accessory enthalpy control (EC) is used in place of OAT, see instructions shipped with EC for installation and adjustment (see Fig. 25).

11. Connect OAT per Fig. 26.

Fig. 19 — Typical Access Panel Locations

Fig. 20 — Outdoor-Air Hood Details

12. Slide outdoor-air inlet screen into screen track on hood side plate. While holding screen in place, fasten screen retainer to hood using screws provided.

NOTE: Refer to Fig. 27 for economizer barometric relief damper characteristics.

G. Optional PARABLADE Economizer

The optional PARABLADEeconomizer hood assembly is packaged and shipped in the ﬁlter section. Damper blades and control boards are installed at the factory and the economizer is shipped in the vertical discharge position.

NOTE: Horizontal discharge block-off plate is shipped with the air hood package. The PARABLADE economizer can only be used for vertical discharge applications. Discard this plate.

—13—

ECONOMIZER CONTROL BOARD

BAROMETRIC RELIEF DAMPER

ECONOMIZER PLUG

ECONOMIZER MOTOR

Fig. 21 — Horizontal Durablade Economizer Installation

(90 Degree Rotation)

BLOCK-OFF PLATE

Fig. 22 — Horizontal Discharge Block-Off Plate

ECONOMIZER CONTROL BOARD

ECONOMIZER PLUG

WIRING HARNESS

BAROMETRIC RELIEF DAMPER

ECONOMIZER MOTOR

TOP SCREW

Example:

Given:

Negative Pressure ............................0.2in.wg

Outdoor Air ..................................900cfm

Determine — Setting—5in.

Fig. 24 — Durablade Economizer Minimum Position Setting

Assembly

1. Determine if ventilation air is required in building. If so, determine the minimum amount to be supplied by each unit and record quantity of ventilation air needed for use in Step 5.

2. Remove ﬁlter access panel by raising panel and swinging panel outward. Panel is now disengaged from track and can be removed. No tools are required to remove ﬁlter access panel. Remove outdoor-air opening panel. Save panels and screws. See Fig. 19.

3. Assemble outdoor-air hood top and side plates as shown in Fig. 20. Install seal strips on hoop top and sides. Put aside screen retainer and retainer screw for later assembly. Do not attach hood to unit at this time.

4. Insert economizer plug into economizer harness. Remove tape from barometric relief damper. See Fig. 28.

5. If ventilationis not required, proceed toStep 6. If ventilation air is required, perform the following:

a. Make sure the factory-installed jumper is in place

across terminals P and P1 on the economizer logic module. T and T1 should be disconnected during adjustment.

b. The 2 potentiometers with slots for adjustment are

located on the face of the economizer logic module. Turn the lower potentiometer fully clockwise. The dampers should be fully closed. Turn the potentiometer gradually counterclockwise until the desired position is reached.

c. Connect T and T1 to the 24V power supply.

POSITION SETTING BRACKET

Fig. 23 — Durablade Economizer Installed in Unit

—14—

0.90

0.80

0.70

0.60

0.50

0.40

0.30

PRESSURE DROP (in. wg)

0.20

0.10

REV. B

CONTACTS SHOWN IN HIGH ENTHALPY

OR UNPOWERED STATE

198818A

ENTHALPY

24VAC

CONTROL

TR1

MINIMUM

POSITION

OPEN

CONTACT RATINGS: 1.5A RUN, 3.5A IN

RUSH AT 24VAC

CW–SETPOINTS–CCW

DAMPER

OUTDOOR TEMP.

OPEN

B A

60 65 70

°F

3 mA MIN. AT 11 VDC

DAMPER

CLOSED

97-3672

REV.

Fig. 25 — Outdoor-Air Thermostat/

Enthalpy Control Installation

OAT — Outdoor-Air Thermostat NOTE: See unit wiring diagram for details.

Fig. 26 — Wiring Connections for Outdoor-Air Thermostat

0.00

200 300 400

100

500 600

700

800

CFM

Fig. 27 — Durablade Economizer Barometric Relief

Damper Characteristics

d. After installation is complete, calculate the mini-

mum airﬂow across the economizer.Tocalculate the minimum airﬂow, the following data is needed: total cfm (cfm temperature of the return air (T ture of the entering outside air (T

), temperature of the total cfm (T3),

), and tempera-

). Cfm1is the

outside air cfm, which will be the minimum airﬂow. Insert the data into the following equations:

(cfm1)+T2(cfm2)

cfm

cfm2= (cfm3− cfm1)

Therefore:

T1(cfm1)+ T2(cfm3− cfm1)

cfm

Use this equation to determine cfm1, which is the minimum airﬂow across the economizer.

cfm1=

3−T2

1−T2

) cfm

)

If cfm1does not match the desired minimum airﬂow from Step 1, readjust the minimum position setting screw.

6. Determine the enthalpy changeover set point from

Fig. 28. The enthalpy changeover set point should be set to return the outdoor air damper to the minimum position when enthalpy rises above the set point. The settings are A, B, C, and D. Set the enthalpy changeover per the setting in Fig. 29.

7. Replace outdoor-air opening panel using screws from

Step 2. Replace ﬁlter access panel. Ensure the ﬁlter access panel slides along the tracks and is securely engaged. See Fig. 30.

8. Fasten hood top and side plate assembly (Fig. 31) to

outdoor-air opening panel with screws provided.

9. Slide outdoor-air inlet screen into screen track on hood

side plate. While holding screen in place, fasten screen retainer to hood using screws provided. See Fig. 32.

NOTE: Refer to Fig. 33 for PARABLADE economizer barometric relief damper characteristics.

—15—

Fig. 28 — PARABLADE Economizer Installed in Unit

0.90

0.80

0.70

0.60

0.50

0.40

0.30

0.20

0.10

0.00

100

200

300

400

500

600 700

800

CFM

PRESSURE DROP (in. wg)

Fig. 31 — Outdoor-Air Hood Installed On Unit

CONTROL POINT

F (C) APPROX.

A 73 (23) B 70 (21) C 67 (19) D 63 (17)

AT 50% RH

CONTROL

CURVE

RH — Relative Humidity

Fig. 29 — Enthalpy Settings for PARABLADE Economizer

Fig. 32 — Filter Installed on Outdoor-Air Hood

Fig. 30 — Panels Reinstalled On Unit

Fig. 33 — PARABLADE Economizer Barometric

Relief Damper Characteristics

—16—

PRE-START-UP

WARNING:

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 compressor terminal cover until all electrical sources have been disconnected.

4. Relieve all pressure from system before touching or disturbing anything inside terminal box if refrigerant leak is suspected around compressor 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. Relieve all pressure from system. b. Cut component-connecting tubing with tubing

c. Carefully unsweat remaining tubing stubs when

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

1. Remove all access panels.

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

3. Make the following inspections: a. Inspect for shipping and handling damages such as

broken lines, loose parts, disconnected wires, etc.

b. Inspect for oil at all refrigerant tubing connections

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. If refrigerant leak is detected, see Refrigerant Leaks section on page 30.

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

sure that connections are completed and tight.

d. Inspect coil ﬁns. If damaged during shipping and han-

dling, carefully straighten ﬁns with a ﬁn comb.

4. Verify the following conditions: a. Make sure that condenser-fan blade is positioned cor-

rectly in fan oriﬁce. Blades should clear fan motor

and fan oriﬁce ring.

b. Make sure that air ﬁlters are in place. c. Make sure that condensate drain pan and trap are

ﬁlled with water to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose parts

have been removed.

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

6. Each unit system has 4 Schrader-type gage ports: one on the suction line, one on the liquid line and two on the compressor discharge line. Be sure that caps on the ports are tight.

Unit is now ready for initial start-up.

Failure to observe the following warn-

cutter and remove component from unit. necessary. Oil can ignite when exposedto torch

ﬂame.

START-UP

I. HEATING SECTION START-UP AND ADJUSTMENTS

CAUTION:

in Pre-Start-Up section on this page before starting unit.

Do not jumper any safety devices when operating the unit.

A. Checking Heating Control Operation

Start and check the unit for proper heating control operation as follows:

1. Turn on unit electrical supply.

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

3. The evaporator fan will start immediately, and electric heater will be energized.

4. Check for heating operation by verifying that unit supply outlets are functional.

5. The evaporator fan and heaters will turn off after thermostat temperature is satisﬁed.

B. Heating Sequence of Operation

Room thermostat calls for heat, closing circuit between R and W1 24-v control terminals. Power to terminal R is supplied through the 24-v transformer, which is internally protected against overload. The 24-v power energizes the indoor (evaporator) fan relay (IFR). The IFR closes normally open contacts 2 to 4, which energize the indoor (evaporator) fan contactor (IFC) and the electric heat contactor, and start the indoor (evaporator) fan motor (IFM). There is no time delay in the start-up of the IFM.

When the call for heat is satisﬁed, then the R to W1 circuit is opened and the IFR and IFC are deenergized.

Additional information on economizer operating in the heating only mode is provided in Ventilation Sequence section on page 27.

C. Limit Switches

The heating limit switches (LS) are normally closed. If the leaving-air temperature exceeds the maximum allowable temperature, one of the limit switches will open, breaking the power circuit to the heater. This causes the heater to shut down immediately. Check the air quantity to ensure there is sufficient airﬂow.

If unit does not energize, reset the normally closed manual limit switch (LSM). The LSM reset button is located on the fan housing, and will only open in the event of a fan failure.

D. Airﬂow and Temperature Rise

The heating operation airﬂow must produce a temperature rise that falls within the approved cfm range (300to 500 cfm per 12,000 Btuh cooling).

Refer to Indoor Airﬂow and Airﬂow Adjustments section on page 19 to adjust heating airﬂow where required.

E. Safety Check of Limit Control

Amanual reset limit control is located on the evaporator fan. The control shuts off the unit in the event of fan failure.

Complete the required procedures given

—17—

II. COOLING SECTION START-UP AND ADJUSTMENTS

CAUTION:

in the Pre-Start-Up section on page 17 before starting the unit.

Do not jumper any safety devices when operating the unit.

Do not operate the compressor when the outdoor temperature is below 25 F (unless accessory low ambient kit is installed).

Do not rapid-cycle the compressor.Allow 5 minutes between ‘‘on’’ cycles to prevent compressor damage.

A. Checking Cooling Control Operation

Start and check the unit for proper cooling control operation as follows:

1. Place room thermostat SYSTEM switch in OFF position. Observe that blower motor starts when FAN switch is placed in ON position and shuts down when FANswitch is placed in AUTO. position.

2. Place SYSTEM switch in COOL position and FAN switch in AUTO. position. Set cooling control below room temperature. Observe that compressor, condenser fan motor and evaporator-fan motor start. Observe that cooling cycle shuts down when control setting is satisﬁed.

3. When using an auto-changeover room thermostat, place both SYSTEM and FAN switches in AUTO. positions. Observe that unit operates in Heating mode when temperature control is set above room temperature and operates in Cooling mode when temperature control is set below room temperature.

B. Checking and Adjusting Refrigerant Charge

The refrigerant system is fully charged with R-22 refrigerant, tested and factory-sealed.

NOTE: Adjustment of the refrigerant charge is not required unless the unit is suspected of not having the proper R-22 charge. This unit uses charging charts to determine proper charge. See Refrigerant Charge section on page 30 for further details.

C. Unit Controls

All compressors have the following internal-protection controls:

1. High-Pressure Relief Valve — This valve (internal to the compressor) opens when the pressure differential between the low and high sides becomes excessive and will automatically reset when pressure returns to normal.

2. Compressor Overload — This overload interrupts power to the compressor when either the current or internal temperature becomes excessive, and automatically resets when the internal temperature drops to a safe level. This overload may require up to 60 minutes (or longer) to reset; therefore, if the internal overload is suspected of being open, disconnect the electrical power to the unit and check the circuit through the overload with an ohmmeter or continuity tester.

D. Compressor Rotation

On 3-phase units with scroll compressors, it is important to be certain compressor is rotating in the proper direction. 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.

Complete the required procedures given

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 is probably also rotating in the wrong direction.

2. Turn off power to the unit.

3. Reverse any two of the unit power leads.

4. Reapply power to the compressor.

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

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

E. Cooling Sequence of Operation

Without Economizer Room thermostat calls for cooling. Circuit closes between

24-v control circuit terminals R and Y1 and terminals R and G. Power to terminal R is supplied through the 24-v transformer (transformer is internally protected against overload). Terminal G energizes the indoor (evaporator) fan contactor (IFC) through normally closed contacts T and B of the time-delay relay (TDR) and the evaporator fan starts.

The 24-v power through terminal Y1 energizes the compressor contactor (C), starting the compressor and condenser fan.

When the thermostat is satisﬁed, C1 is deenergized and the compressor and OFM shut off. After a 30-second delay on 036-060 units, the IFM shutsoff. If the thermostat fanselector switch is in the ON position, the evaporator motor will run continuously.

Cooling, Units with Durablade Economizer When the outdoor-air temperature is above the outdoor-air

thermostat (OAT) setting and the room thermostat calls for cooling, compressor contactor is energized to start compressor and the outdoor (condenser) fan motor (OFM). The indoor (evaporator) fan motor (IFM) is energied and the economizer damper moves to the minimum position. After the thermostat is satisﬁed, there is a 30-second delay before the evaporator fan turns off. The damper then moves to the fully closed position. When using continuous fan, the damper moves to the minimum position.

When the outdoor-air temperature is below the OAT setting and the thermostat calls for cooling, the economizer damper moves to the minimum position. If the supply-air temperature is above 57 F,the damper continues to open until it reaches the fully open position or until the supply-air temperature drops below 52 F.

When the supply-air temperature falls to between 57 F and 52 F, the damper will remain at an intermediate open position. If the supply-air temperature falls below 52 F,the damper will modulate closed until it reaches the minimum position or until the supply-air temperature is above 52 F. When the thermostat is satisﬁed, the damper moves to the fully closed position when using AUTO. fan or to the minimum position when using a continuous fan.

If the outdoor air alone cannot satisfy the cooling requirements of the conditioned space, economizer cooling is integrated with mechanical cooling, providing two stages of cooling. The compressor and the condenser fan will be energized and the position of the economizer damper will be determined by the supply-air temperature. When the second stage

—18—

of cooling is satisﬁed, the compressor and OFM will be deenergized. The damper position will be determined by the supplyair temperature. When the ﬁrst stage of cooling is satisﬁed, there is a 30-second delay before the evaporator fan shuts off.The damper then moves to the fully closed position. When using a continous fan, the damper moves to the minimum position. Additional information on economizer operation is provided in the Ventilation Sequence section on page 27.

Cooling, Units With PARABLADE Economizer When the outdoor-air is above the enthalpy control setting,

and the room thermostat calls for cooling, the compressor contactor is energized to start the compressor and the outdoor (condenser) fan motor. The indoor (evaporator) fan motor is energized and the economizer damper moves to the minimum position. After the room thermostat is satisﬁed the damper will spring return to the fully closed position.

When the outdoor-air is below the enthalpy control setting and the thermostat calls for cooling, the economizer outdoorair damper is opened proportionally to maintain between 50 and 56 F at the mixed-air sensor. If outside air alone cannot satisfy the cooling requirements, economizer cooling is integrated with mechanical cooling. When the room thermostat is satisﬁed, the damper will spring return to the full closed position. Additional information on economizer operation is provided in the Ventilation Sequence section on page 27.

Time Guardt II Device If the unit is equipped with accessory Time Guard II recycle

timer,the unit will delay 5 minutes between compressor starts. Controls Kit Loss-of-Charge/Low-Pressure Switch (LPS) — When the liq-

uid line pressure drops below 7 psig, the LPS opens 24-v power

to the compressor contactor and stops the compressor. When the pressure reaches 22 psig, the switch resets and the compressor is allowed to come back on.

High-Pressure Switch (HPS) — When the refrigerant highside pressure reaches 428 psig, the HPS opens 24-v power to the compressor contactor and stops the compressor.When the pressure drops to 320 psig, the switch resets and the compressor is allowed to restart.

Freeze-Protection Thermostat (FPT) — When the evaporatorcoil leaving refrigerant temperature drops below 30 F, the FPT opens 24-v power to the compressor contactor and stops the compressor.When the leaving refrigerant temperature warms to 45 F, the switch resets and the compressor is allowed to restart.

III. INDOOR AIRFLOW AND AIRFLOW ADJUSTMENTS

CAUTION:

For cooling operation, the recommended airﬂow is 300 to 500 cfm per each 12,000 Btuh of rated cooling capacity.For heating operation, the airﬂow must produce a temperature rise that falls within the range stamped on the unit rating plate.

Adjust evaporator-fan speed to meet jobsite conditions. Table3 shows fan rpm at motor pulley settings. Table 4 shows maximum amp draw of belt drive motor. Refer to Tables 5-18 to determine fan speed settings.

A. Direct Drive Motors

The evaporator-fan motor factory speed setting is shown on label diagram affixed to base unit. If other than factory setting is desired, refer to label diagram for motor reconnection.

Table 3 — Fan Rpm at Motor Pulley Settings*

UNIT 558D

036† 1090 1055 1025 990 960 925 890 860 825 795 760 048† 1185 1150 1115 1080 1045 1015 980 945 910 875 840 060† 1300 1260 1220 1180 1140 1100 1060 1020 980 940 900

072** 1460 1420 1380 1345 1305 1265 1225 1185 1150 1110 1070

*Approximate fan rpm shown. †Indicates alternate motor and drive package.

**Indicates standard motor and drive package.

⁄

MOTOR PULLEY TURNS OPEN

⁄

—19—

Table 4 — Motor Data

UNIT 558D

EVAPORATOR-FAN

MOTOR

MAXIMUM MAXIMUM

CONTINUOUS OPERATING AMP

BHP* WATTS* DRAW

UNIT

VOLTAGE

MAXIMUM

208/230 2.9

Std .34 440

036

Alt 1.00 1000

460 1.4 575 1.4

208/230 5.1

460 2.3 575 2.3

208/230 3.7

Std .75 850

048

Alt 1.00 1000

460 1.9 575 1.9

208/230 5.1

460 2.3 575 2.3

208/230 6.2

Std 1.20 1340

460 3.4 575 3.4

060

Alt

1.3 1750 208/230† 7.6 208/230** 6.1

2.4 2120

460 2.7 575 2.7

208/230 6.1

072 Std 2.40 2120

460 2.7 575 2.7

LEGEND

Bhp — Brake Horsepower

*Extensive motor and electrical testing on these units ensures that the full range of the motors can be

utilized with conﬁdence. Using your 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. †Single-Phase motor. **3-phase motor.

Table 5 — 558D036 Air Delivery — Vertical Discharge Units (Standard Motor)

AIRFLOW

(Cfm)

900 0.67 253 0.68 277 0.69 307 0.69 363 1000 0.60 270 0.61 292 0.61 321 0.63 374 1100 0.55 287 0.56 307 0.57 335 0.58 385 1200 0.51 304 0.51 323 0.52 349 0.53 397 1300 0.45 321 0.46 338 0.46 364 0.47 408 1400 0.38 338 0.41 354 0.43 378 0.43 420 1500 0.34 355 0.36 369 0.38 392 0.39 431

208 v 230, 460, 575 v 208 v 230, 460, 575 v

ESP Watts ESP Watts ESP Watts ESP Watts

Low Speed High Speed

LEGEND

ESP — External Static Pressure (in. wg) NOTES:

1. Values include losses for ﬁlters, unit casing, and wet coils.

2. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with conﬁdence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. For additional information on motor performance, refer to Table 4.

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

4. To convert watts to bhp: bhp =

watts input x motor efficiency

746

Motor efficiency = .63

STANDARD DIRECT DRIVE MOTOR

—20—

Table 6 — 558D036 Air Delivery — Vertical Discharge Units (Alternate Motor)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

900 581 119 673 179 736 219 805 249 865 288 911 338 957 388 988 428

1000 644 189 709 219 782 279 835 298 900 348 937 378 992 438 1039 487

1100 687 219 746 259 806 298 867 348 929 398 964 398 1013 487 1068 547 1200 733 259 785 318 843 348 903 408 960 467 994 497 1045 557 1090 637 1300 754 288 826 378 891 428 942 477 991 527 1047 597 1075 637 1122 696 1400 810 348 868 448 937 507 984 567 1032 617 1067 666 1110 726 1160 766 1500 841 418 911 527 985 607 1029 656 1073 716 1109 766 1150 816 1190 855

AIRFLOW

(Cfm)

900 1039 448 1061 487 1083 527 1105 567

1000 1061 507 1086 547 1111 587 1136 627

1100 1090 577 1109 607 1127 637 1145 666

1200 1109 647 1156 676 1203 706 1250 736 1300 1152 716 1190 756 1228 796 1266 836 1400 1181 806 1237 845 1293 885 1349 925 1500 1225 895 1271 945 1317 995 1363 1044

NOTES:

1. Boldface indicates a ﬁeld-supplied drive is required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

4. Maximum usable watts input is 1000. Extensive motor and electrical testing on these units ensures that the full range of the motor can be

5. Values include losses for ﬁlters, unit casing, and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Alternate motor drive range: 760 to 1090 rpm. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp:

indicates maximum usable watts of a factory-supplied motor.

utilized with conﬁdence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. For additional information on motor performance, refer to Table 4.

watts input x motor efficiency

bhp =

Motor efficiency = .75

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

ALTERNATE BELT DRIVE MOTOR

External Static Pressure (in. wg)

0.9 1.0 1.1 1.2

Rpm Watts Rpm Watts Rpm Watts Rpm Watts

746

External Static Pressure (in. wg)

Table 7 — 558D048 Air Delivery — Vertical Discharge Units (Standard Motor)

AIRFLOW

(Cfm)

1200 0.93 458 0.94 506 0.94 572 0.99 632 1300 0.86 471 0.87 521 0.87 589 0.92 651 1400 0.78 503 0.79 556 0.79 616 0.87 681 1500 0.70 536 0.73 593 0.73 631 0.80 698 1600 0.61 557 0.64 616 0.66 654 0.76 723 1700 0.51 584 0.54 646 0.58 678 0.68 750 1800 0.40 610 0.44 674 0.51 698 0.63 772 1900 0.29 629 0.37 696 0.46 720 0.56 796 2000 0.25 651 0.30 720 0.39 744 0.50 823

ESP — External Static Pressure (in. wg) NOTES:

1. Values include losses for ﬁlters, unit casing, and wet coils.

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

4. To convert watts to bhp: bhp =

Motor efficiency = .66

watts input x motor efficiency

208 v 230, 460, 575 v 208 v 230, 460, 575 v

ESP Watts ESP Watts ESP Watts ESP Watts

LEGEND

Low Speed High Speed

746

STANDARD DIRECT DRIVE MOTOR

—21—

Table 8 — 558D048 Air Delivery — Vertical Discharge Units (Alternate Motor)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1200 542 168 616 221 678 278 739 336 842 462 886 525 929 588 1008 704 1300 576 210 644 263 704 326 764 389 867 525 910 588 952 651 1029 788 1400 610 252 673 315 732 378 791 441 889 578 933 651 976 725 1052 826 1500 646 294 704 368 761 436 818 504 912 641 957 720 1001 777 1076 905 1600 681 347 735 420 790 494 845 567 920 695 931 772 1023 848 1100 995 1700 718 410 768 483 836 562 873 641 965 777 1005 853 1045 930 1124 1084 1800 754 473 801 557 851 641 900 725 992 858 1032 940 1071 1022 1147 1174 1900 791 546 836 630 832 720 828 809 1019 950 1058 1037 1097 1124 1169 1263 2000 828 630 870 714 864 809 858 904 1046 1053 1085 1139 1124 1237 1194 1373

AIRFLOW

(Cfm)

1200 1052 762 1096 820 1134 835 1203 885 1242 969 1300 1065 846 1101 904 1174 1040 1229 1100 1277 1029 1400 1087 890 1121 918 1183 1042 1255 1167 1305 1190 1500 1111 980 1145 1014 1208 1138 1274 1272 1337 1350 1600 1134 1069 1168 1100 1232 1253 1291 1396 1350 1558 1700 1158 1164 1192 1196 1255 1358 1314 1511 1370 1738 1800 1182 1263 1217 1301 1279 1473 1381 1635 1393 1907 1900 1205 1363 1240 1406 1303 1588 1408 1769 1417 2068 2000 1228 1472 1262 1511 1327 1702 1436 1894 1440 2229

NOTES:

1. Boldface indicates a ﬁeld-supplied drive is required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

4. Maximum usable watts input is 1000. Extensive motor and electrical testing on these units ensures that the full range of the motor can be

5. Values include losses for ﬁlters, unit casing, and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Alternate motor drive range: 840 to 1185 rpm. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp:

indicates maximum usable watts of a factory-supplied motor.

watts input x motor efficiency

bhp =

Motor efficiency = .75

0.1 0.2 0.3 0.4 0.6 0.7 0.8 1.0

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

ALTERNATE BELT DRIVE MOTOR

External Static Pressure (in. wg)

1.1 1.2 1.4 1.6 1.8

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

746

External Static Pressure (in. wg)

Table 9 — 558D060 Air Delivery — Vertical Discharge Units (Standard Motor)

AIRFLOW

(Cfm)

1500 0.88 750 1.20 791 1.19 782 1.36 845 1.38 875 1.44 949 1600 0.68 780 1.04 824 1.04 821 1.22 883 1.25 913 1.33 988 1700 0.51 810 0.89 857 0.89 861 1.09 921 1.13 950 1.22 1027 1800 0.35 839 0.73 891 0.74 900 0.96 959 1.00 988 1.11 1066 1900 0.26 873 0.58 924 0.59 940 0.86 997 0.88 1025 1.00 1105 2000 0.18 905 0.42 957 0.44 979 0.73 1035 0.78 1063 0.92 1144 2100 0.08 940 0.27 990 0.29 1018 0.59 1073 0.63 1101 0.81 1183 2200 — — 0.19 1023 0.19 1035 0.46 1111 0.49 1138 0.69 1222 2300 — — 0.11 1056 0.11 1076 0.34 1149 0.41 1176 0.59 1261 2400 — — 0.03 1096 0.04 1113 0.19 1187 0.22 1213 0.43 1300 2500 — — — — — — 0.09 1225 0.12 1251 0.34 1340

ESP — External Static Pressure (in. wg) NOTES:

1. Values include losses for ﬁlters, unit casing, and wet coils.

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

4. To convert watts to bhp: bhp =

Motor efficiency = .67

watts input x motor efficiency

208 v 230, 460, 575 v 208 v 230, 460, 575 v 208 v 230, 460, 575 v

ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts

LEGEND

Low Speed Medium Speed High Speed

746

STANDARD DIRECT DRIVE MOTOR

—22—

Table 10 — 558D060 Air Delivery — Vertical Discharge Units (Alternate Motor)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1500 730 347 789 409 896 542 990 685 1072 848 1153 1022 1221 1196 1256 1328 1280 1349 1320 1400 1600 770 409 826 470 931 623 1020 766 1101 930 1178 1114 1252 1298 1311 1482 1340 1615 1380 1645 1700 811 480 865 552 966 705 1051 858 1133 1032 1205 1206 1278 1400 1345 1604 1397 1799 1424 1931 1800 852 562 905 634 1002 797 1084 950 1163 1124 1235 1318 1303 1512 1371 1727 1433 1942 1480 2136 1900 894 552 945 736 1037 899 1119 1063 1194 1237 1266 1431 1330 1625 1396 1850 1460 2074 1517 2299 2000 936 756 984 838 1072 1001 1154 1185 1226 1359 1297 1564 1362 1768 1422 1983 1485 2207 1544 2453 2100 978 869 1024 950 1108 1124 1192 1318 1259 1502 1327 1696 1393 1911 1452 2126 1510 2361 1569 2606 2200 1021 991 1064 1073 1145 1247 1225 1461 1294 1656 1359 1850 1423 2064 1483 2289 1538 2514 1595 2769 2300 1064 1124 1104 1206 1183 1390 1260 1604 1330 1819 1392 2013 1454 2228 1515 2463 1569 2698 1622 2943 2400 1107 1267 1145 1349 1222 1482 1296 1768 1365 1983 1426 2197 1485 2412 1544 2647 1601 2902 1652 3137 2500 1150 1420 1186 1512 1262 1717 1331 1931 1400 2166 1461 2391 1518 2606 1575 2841 1631 3096 1684 3352

NOTES:

1. Boldface indicates a ﬁeld-supplied drive is required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

4. Maximum usable watts input is 2120. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with conﬁdence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. For additional information on motor performance, refer to Table 4.

5. Values include losses for ﬁlters, unit casing, and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Alternate motor drive range: 900 to 1300. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp: bhp =

Motor efficiency = .74

0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

indicates maximum usable watts of a factory-supplied motor.

watts input x motor efficiency

746

External Static Pressure (in. wg)

Table 11 — 558C072 Air Delivery — Vertical Discharge Units (Standard Motor)

STANDARD BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1800 852 562 905 615 1002 739 1084 859 1163 998 1235 1156 1303 1318 1371 1499 1433 1638 1900 894 630 945 692 1037 818 1119 948 1194 1089 1266 1250 1330 1413 1396 1604 1460 1796 2000 936 708 984 771 1072 899 1154 1047 1226 1190 1297 1361 1362 1534 1422 1718 1485 1910 2100 978 795 1024 859 1108 998 1190 1156 1259 1310 1327 1473 1393 1656 1452 1840 1510 2041 2200 1021 891 1064 956 1145 1097 1225 1275 1294 1439 1359 1604 1423 1779 1483 1980 1538 2171 2300 1064 998 1104 1064 1183 1216 1260 1396 1330 1578 1392 1744 1454 1927 1515 2128 1569 2326 2400 1107 1114 1145 1182 1222 1353 1296 1534 1365 1718 1426 1901 1485 2084 1544 2283 1601 2459 2500 1150 1241 1186 1318 1262 1491 1331 1674 1400 1875 1461 2067 1518 2249 1575 2445 — — 2600 1193 1387 1228 1465 1301 1648 1367 1831 1435 2041 1497 2240 1552 2428 ———— 2700 1237 1543 1269 1621 1341 1814 1404 1997 1471 2214 1532 2420 —————— 2800 1280 1718 1311 1796 1381 1989 1442 2180 1506 2394 — — —————— 2900 1324 1901 1354 1980 1420 2180 1481 2369 1542 2579 — — —————— 3000 1368 2093 1396 2171 1460 2369 1521 2571 ——————————

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

4. Maximum usable watts input is 2120. Extensive motor and electrical testing on these units ensures that the full range of the motor can be

5. Values include losses for ﬁlters, unit casing and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Standard motor drive range: 1070 to 1460. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp:

indicates maximum usable watts of a factory-supplied motor.

watts input x motor efficiency

bhp =

Motor efficiency = .84

0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

746

External Static Pressure (in. wg)

—23—

Table 12 — 558D036 Air Delivery — Horizontal Discharge Units (Standard Motor)

AIRFLOW

(Cfm)

900 0.72 253 0.75 277 0.73 307 0.76 363 1000 0.67 270 0.69 292 0.70 321 0.71 374 1100 0.61 287 0.63 307 0.64 335 0.65 385 1200 0.57 304 0.58 323 0.56 349 0.59 397 1300 0.51 321 0.53 338 0.53 364 0.54 408 1400 0.44 338 0.46 354 0.47 378 0.48 420 1500 0.39 355 0.41 369 0.43 392 0.43 431

ESP — External Static Pressure (in. wg) NOTES:

1. Values include losses for ﬁlters, unit casing, and wet coils.

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

4. To convert watts to bhp: bhp =

Motor efficiency = .63

watts input x motor efficiency

208 v 230, 460, 575 v 208 v 230, 460, 575 v

ESP Watts ESP Watts ESP Watts ESP Watts

LEGEND

Low Speed High Speed

746

STANDARD DIRECT DRIVE MOTOR

Table 13 — 558D036 Air Delivery — Horizontal Discharge Units (Alternate Motor)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

900 526 70 584 99 656 139 734 219 818 269 875 269 924 308 953 348 1000 570 109 627 149 736 189 800 259 848 288 895 308 936 348 977 388 1100 614 149 670 189 758 229 812 288 863 308 914 348 960 388 1005 428 1200 658 189 710 229 780 279 840 318 889 358 938 398 988 448 1038 497 1300 703 239 752 269 808 318 868 368 916 408 963 448 1012 507 1061 557 1400 725 288 776 308 845 378 891 418 937 467 983 507 1027 557 1071 597 1500 755 328 816 378 870 428 924 477 969 527 1014 577 1056 627 1097 676

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

External Static Pressure (in. wg)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

900 989 388 1028 438 1074 487 1120 537 1000 1020 438 1064 477 1124 537 1185 597 1100 1052 487 1100 527 1163 587 1225 647 1200 1076 527 1136 577 1201 647 1266 716 1300 1090 607 1172 647 1239 716 1306 786 1400 1108 666 1208 706 1278 786 1347 865 1500 1117 696 1245 776 1315 865 1385 955

NOTES:

1. Boldface indicates a ﬁeld-supplied drive is required. (See Note 4.)

2. Maximum usable watts input is 1000. Extensive motor and electrical testing on these units ensures that the full range of the motor can be utilized with conﬁdence. Using your fan motors up to the wattage ratings shown will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected. For additional information on motor performance, refer to Table 4.

3. Values include losses for ﬁlters, unit casing, and wet coils.

4. Alternate motor drive range: 760 to 1090 rpm. All other rpms require ﬁeld-supplied drive.

5. To convert watts to bhp:

watts input x motor efficiency

bhp =

Motor efficiency = .75

0.9 1.0 1.1 1.2

Rpm Watts Rpm Watts Rpm Watts Rpm Watts

746

External Static Pressure (in. wg)

—24—

Table 14 — 558D048 Air Delivery — Horizontal Discharge Units (Standard Motor)

AIRFLOW

(Cfm)

1200 0.93 458 0.97 506 1.04 572 1.09 632 1300 0.86 471 0.90 521 0.96 589 1.02 651 1400 0.78 503 0.84 556 0.90 616 0.96 681 1500 0.73 536 0.76 593 0.83 631 0.89 698 1600 0.67 557 0.70 616 0.75 654 0.82 723 1700 0.60 584 0.63 646 0.67 678 0.74 750 1800 0.51 610 0.54 674 0.62 698 0.69 772 1900 0.40 629 0.45 696 0.54 720 0.62 796 2000 0.32 661 0.33 731 0.47 744 0.54 823

ESP — External Static Pressure (in. wg) NOTES:

1. Values include losses for ﬁlters, unit casing, and wet coils.

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

4. To convert watts to bhp: bhp =

Motor efficiency = .66

LEGEND

watts input x motor efficiency

208 v 230, 460, 575 v 208 v 230, 460, 575 v

ESP Watts ESP Watts ESP Watts ESP Watts

Low Speed High Speed

746

STANDARD DIRECT DRIVE MOTOR

Table 15 — 558D048 Air Delivery — Horizontal Discharge Units (Alternate Motor)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1200 514 158 590 210 657 263 723 315 828 441 876 510 924 578 999 674 1300 545 189 615 242 680 305 744 368 849 494 895 562 940 630 1025 756 1400 577 221 642 284 704 347 766 410 870 546 915 620 959 693 1042 828 1500 609 273 670 326 729 394 788 462 892 609 936 683 980 757 1060 899 1600 642 315 699 378 755 447 811 515 913 672 957 751 1001 830 1080 971 1700 675 378 728 441 782 510 836 578 935 746 979 825 1023 904 1101 1053 1800 709 431 759 504 810 578 860 651 957 820 1001 904 1044 988 1122 1134 1900 743 504 790 578 838 651 886 725 980 904 1023 993 1066 1082 1143 1237 2000 778 578 836 651 875 730 913 809 1004 988 1046 1082 1088 1177 1165 1339

0.1 0.2 0.3 0.4 0.6 0.7 0.8 1.0

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

External Static Pressure (in. wg)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1200 1018 685 1036 695 1073 756 1109 794 1138 851 1300 1058 807 1090 858 1121 832 1159 918 1193 976 1400 1080 899 1118 971 1175 1014 1206 1042 1244 1138 1500 1098 981 1136 1063 1205 1138 1258 1243 1289 1282 1600 1117 1058 1153 1140 1224 1234 1287 1387 1337 1492 1700 1137 1139 1172 1226 1241 1320 1307 1492 1366 1655 1800 1157 1226 1192 1318 1258 1415 1323 1597 1385 1779 1900 1179 1328 1214 1420 1279 1511 1341 1702 1402 1894 2000 1200 1431 1235 1523 1300 1616 1361 1817 1419 2008

NOTES:

1. Boldface indicates a ﬁeld-supplied drive is required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

4. Maximum usable watts input is 1000. Extensive motor and electrical testing on these units ensures that the full range of the motor can be

5. Values include losses for ﬁlters, unit casing, and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Alternate motor drive range: 840 to 1185 rpm. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp:

indicates maximum usable watts of a factory-supplied motor.

watts input x motor efficiency

bhp =

Motor efficiency = .75

1.1 1.2 1.4 1.6 1.8

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

746

External Static Pressure (in. wg)

—25—

Table 16 — 558D060 Air Delivery — Horizontal Discharge Units (Standard Motor)

AIRFLOW

(Cfm)

1500 1.01 750 1.25 791 1.26 782 1.46 845 1.46 875 1.52 949 1600 0.82 780 1.09 824 1.11 821 1.32 883 1.33 913 1.41 988 1700 0.64 810 0.97 857 0.99 861 1.22 921 1.24 950 1.33 1027 1800 0.44 839 0.81 891 0.84 900 1.09 959 1.11 988 1.22 1066 1900 0.32 869 0.66 924 0.69 940 0.96 997 0.99 1025 1.11 1105 2000 0.21 899 0.47 957 0.51 979 0.80 1035 0.83 1063 0.97 1144 2100 0.13 929 0.32 990 0.36 1018 0.64 1073 0.71 1101 0.86 1183 2200 0.05 959 0.19 1023 0.21 1058 0.50 1111 0.58 1138 0.75 1222 2300 — — 0.08 1057 0.08 1097 0.34 1149 0.39 1176 0.57 1261 2400 — — — — — — 0.24 1187 0.29 1213 0.49 1300 2500 — — — — — — 0.15 1225 0.15 1251 0.34 1340

ESP — External Static Pressure (in. wg) NOTES:

1. Values include losses for ﬁlters, unit casing, and wet coils.

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

4. To convert watts to bhp:

bhp =

Motor efficiency = .67

watts input x motor efficiency

208 v 230, 460, 575 v 208 v 230, 460, 575 v 208 v 230, 460, 575 v

ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts ESP Watts

LEGEND

Low Speed Medium Speed High Speed

746

STANDARD DIRECT DRIVE MOTOR

Table 17 — 558D060 Air Delivery — Horizontal Discharge Units (Alternate Motor)

ALTERNATE BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1500 658 276 722 337 840 470 937 603 1027 756 1108 920 1186 1104 1263 1328 1343 1615 1431 1829 1600 693 327 754 388 867 531 963 664 1052 828 1130 991 1205 1175 1278 1380 1350 1645 1424 1921 1700 729 388 787 450 895 593 991 746 1075 899 1154 1083 1226 1257 1296 1451 1364 1676 1432 1931 1800 765 460 821 521 923 664 1019 828 1099 981 1178 1165 1249 1349 1316 1553 1382 1758 1447 1993 1900 802 531 854 593 953 746 1046 920 1126 1083 1201 1257 1274 1461 1338 1656 1402 1870 1464 2095 2000 840 613 900 674 984 838 1073 1012 1154 1185 1226 1359 1297 1564 1363 1768 1424 1983 1484 2207 2100 878 705 923 766 1015 930 1101 1104 1182 1298 1252 1482 1320 1676 1388 1891 1448 2115 1505 2340 2200 916 797 958 869 1046 1032 1129 1216 1209 1420 1280 1615 1345 1809 1410 2013 1473 2248 1529 2483 2300 954 910 993 981 1079 1155 1160 1339 1237 1543 1309 1747 1372 1952 1434 2156 1496 2391 1554 2637 2400 993 1022 1029 1093 1112 1277 1190 1461 1264 1666 1336 1891 1400 2105 1459 2310 1519 2534 1578 2820 2500 1031 1155 1066 1226 1145 1420 1220 1640 1292 1809 1363 2044 1428 2269 1486 2483 1543 2708 1600 2953

NOTES:

1. Boldface indicates a ﬁeld-supplied drive is required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

5. Values include losses for ﬁlters, unit casing, and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Alternate motor drive range: 900 to 1300. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp: bhp =

Motor efficiency = .74

0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

indicates maximum usable watts of a factory-supplied motor.

watts input x motor efficiency

746

External Static Pressure (in. wg)

—26—

Table 18 — 558D072 Air Delivery — Horizontal Discharge Units (Standard Motor)

STANDARD BELT DRIVE MOTOR

AIRFLOW

(Cfm)

1800 765 487 821 532 923 638 1019 843 1099 883 1178 1031 1249 1182 1316 1353 1382 1526 1900 802 539 854 585 953 700 1046 835 1126 965 1201 1106 1274 1275 1338 1439 1402 1621 2000 840 600 888 646 984 771 1073 907 1154 1047 1226 1990 1297 1361 1363 1534 1424 1718 2100 878 669 923 716 1015 843 1101 981 1182 1140 1252 1292 1320 1456 1388 1639 1448 1831 2200 916 739 958 795 1046 924 1129 1072 1209 1241 1280 1404 1345 1569 1410 1744 1473 1945 2300 954 827 993 883 1079 1022 1160 1173 1237 1344 1309 1517 1372 1691 1434 1866 1496 2067 2400 993 916 1029 973 1112 1123 1190 1275 1264 1447 1336 1639 1400 1823 1459 1997 1519 2188 2500 1031 1022 1066 1081 1145 1241 1220 1396 1292 1569 1363 1770 1428 1962 1486 2145 1543 2335 2600 1070 1131 1103 1199 1179 1353 1251 1517 1322 1700 1390 1901 1456 2102 1514 2300 1569 2487 2700 1109 1258 1140 1318 1212 1482 1283 1656 1352 1849 1418 2041 1483 2257 1543 2462 — — 2800 1148 1396 1177 1465 1246 1621 1316 1805 1383 1997 1446 2188 1510 2403 ———— 2900 1188 1543 1215 1604 1281 1770 1349 1962 1413 2154 1476 2352 1537 2562 ———— 3000 1227 1700 1253 1770 1316 1936 1382 2136 1444 2317 1506 2529 ——————

NOTES:

1. Boldface indicates ﬁeld-supplied drive required. (See Note 7.)

2. indicates ﬁeld-supplied motor and drive are required.

5. Values include losses for ﬁlters, unit casing, and wet coils.

6. Use of a ﬁeld-supplied motor may affect wire sizing. Contact your distributor to verify.

7. Standard motor drive range: 1070 to 1460. All other rpms require ﬁeld-supplied drive.

8. To convert watts to bhp: bhp =

Motor efficiency = .84

0.1 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6

Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts Rpm Watts

indicates maximum usable watts of a factory-supplied motor.

watts input x motor efficiency

746

External Static Pressure (in. wg)

B. Belt Drive Motors

Fan motor pulleys are factory set for speed 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. 34.

3. Loosen movable pulley ﬂange setscrew (see Fig. 35).

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

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.

To adjust belt tension:

1. Loosen fan motor nuts.

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

⁄2-in. deﬂection with one ﬁnger).

3. Tighten motor mounting nuts.

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

MOTOR MOUNTING

NUTS AND BOLTS

Fig. 34 — Belt-Drive Motor Mounting

C. Ventilation Sequence

If unit is equipped with economizer, the damper will open to the minimum position whenever the evaporator fan runs.

Fig. 35 — Evaporator-Fan Pulley Adjustment

—27—

Whenever the evaporator fan is energized (during heating, cooling or continuous fan), 24-v power is on terminal IFO on the economizer or two-position damper control board. The damper motor will be energized with 12-vdc power and the damper will drive open until SW3 on the damper is deactivated. The damper motor will stop, and damper will remain in the minimum ventilation position until the evaporator fan is shut off. When the evaporator fan is shut off, the damper motor is again energized and the damper runs closed until SW2 is activated and the damper motor turns off.

CARE AND MAINTENANCE

To ensure continuing high performance, and to minimize the possibility of premature equipment failure, periodic maintenance must be performed on this equipment. This combination heating/cooling unit should be inspected at least once each year by a qualiﬁed service person.

NOTE TO EQUIPMENT OWNER: Consult your local dealer about the availability of a maintenance contract.

I. AIR FILTER

CAUTION:

able air ﬁlter in the return-air duct system. Always replace the ﬁlter with the same dimensional size and type as originally installed. See Table 1 for recommended ﬁlter sizes.

Inspect air ﬁlters at least once each month and replace (throwaway-type) or clean (cleanable-type) at least twice during each heating and cooling season, or whenever the ﬁlter(s) becomes clogged with dust and lint.

When necessary, replace ﬁlters with the same dimensional size and type as originally provided.

CAUTION:

cal power to unit to avoid shock hazard or injury from rotating parts.

Never operate the unit without a suit-

SERVICE

When servicing unit, shut off all electri-

WARNING:

nance on this equipment requires certain expertise, mechanical skills, tools, and equipment.If you do not possess these, do not attempt toperform any maintenance on this equipment other than those procedures recommended in the User’s Information Manual. FAILURE TO HEED THIS WARNING COULD RESULT IN SERIOUS PERSONAL INJURY AND POSSIBLE DAMAGE TO THIS EQUIPMENT.

The minimum maintenance requirements for this equipment are as follows:

1. Inspect air ﬁlters each month. Clean or replace when necessary.

2. Inspect cooling coil, drain pan, and condensate drain each cooling season for cleanliness. Clean when necessary.

3. Inspect fan motor and wheel. Clean and lubricate as necessary.

4. Check electrical connections for tightness and controls for proper operation each heating and cooling season. Service when necessary.

5. Check and inspect accessory electric heaters before each heating season. Clean and adjust when necessary.

6. Check and clean outdoor-air inlet screen if needed.

WARNING:

sult in serious personal injury:

1. Turn off electrical power to the unit before per-

forming any maintenance or service on the unit.

2. Use extreme caution when removing panels and

parts. As with any mechanical equipment, personal injury can result from sharp edges, etc.

3. Never place anything combustible either on, or in

contact with, the unit.

The ability to properly perform mainte-

Failure to follow these warnings could re-

I. CLEANING

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

A. Evaporator Coil

1. Turn unit power off. Remove evaporator coil access panel.

2. If accessory economizer isinstalled, remove economizer by disconnecting Molex plug and economizer mounting screws. Refer to Optional Economizer sections on page 13 or Accessory Economizer Installation Instructions for further details.

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, backﬂush toward return-air section to remove foreign material.

5. Flush condensate pan.

6. Reinstall economizer and ﬁlters.

7. Reconnect wiring.

8. Replace access panels.

B. Condenser Coil

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

One-Row Coils (sizes 036-060) To access one-row coils, remove screws securing condenser-

fan grille to condenser coil top cover. Place grille on top of condenser coil top cover as shown in Fig. 36. It is not necessary to remove the top cover.

Use a water hose or other suitable equipment to remove dirt and debris. Clean theouter surfaces with a stiff brush in the normal manner.

Reverse the procedure outlined above to reinstall the condenserfan grille and condenser coil top cover.

—28—

CONDENSER FAN

Fig. 36 — Condenser Coil Cleaning

Two-Row Coils (size 072) NOTE: Save all screws removed in this section. The screws

must be used when reinstalling the equipment.

1. Toaccess 2-row coils, remove screws securing condenserfan grille to condenser coil top cover.Place grille on top of condenser coil top cover as shown in Fig. 36. It is not necessary to remove the top cover.

2. Remove 3 screws on right side of compressor access panel. Remove one screw securing condenser coil top cover to compressor access panel. Remove lower screw securing condenser coil to compressor mounting plate. See Fig. 11.

3. Remove 4 screws securing control box access cover.Remove 3 screws (located in front of the control box access cover) securing condenser coil top cover.

4. Remove screws securing low-voltage access panel. Remove 2 screws inside the 24-v barrier access panel. Tilt sheet metal (located on left side of the 24-v connections) back 45 degrees.

5. Remove screw securing refrigerant service port access panel.

6. Remove 2 U-clips securing 2-row coils together at hairpin end.

7. Remove screws securing two corner posts. Remove two corner posts.

8. Use right corner post to prop up right side of condenser coil top cover. Slide condenser coil partially out of condenser fan housing. See Fig. 37.

9. Use left corner post to prop up left side of condenser coil top cover.

10. Carefully separatethe outer coil section 3 to 4 in. from the inner coil section. See Fig. 38.

11. Use a water hose or other suitable equipment to ﬂush down between the 2 coil section to remove dirt and debris. Clean the outer surfaces with a stiff brush in the normal manner.

12. Secure inner and outer coil together with U-clip.

13. Reposition the outer and inner coil section.

14. Reverse the procedure outlined above to reinstall equipment.

Fig. 37 — Propping Up Condenser Coil Top Cover

Fig. 38 — Separating Coil Sections

II. LUBRICATION A. Compressors

Each compressor is charged withcorrect amount ofoil at the factory.

B. Fan-Motor Bearings

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

III. CONDENSER-FAN ADJUSTMENT (Fig. 39)

Shut off unit power supply. Remove condenser-fan assembly (grille, motor, and fan) and loosen fan hub setscrews.Adjust fan height as shown in Fig. 39. Tighten setscrews and replace condenser-fan assembly.

—29—

IV. REFRIGERANT CHARGE

Amount of refrigerant charge is listed on unit nameplate (also refer to Table 1). Unit panels must be in place when unit is operating during charging procedure.

This unit uses a ﬁxed-oriﬁce refrigerant metering device located in the coil header. There is one oriﬁce in each coil circuit. The size of the oriﬁce is stamped on the outside of the tube where the oriﬁce is located.Oriﬁces are factory-selected for optimum performance and are not designed to be changed in the ﬁeld. To determine if an oriﬁce is plugged, disconnect power to the evaporator-fan motor and start the unit in Cooling mode. Observe the coil for an uneven frost pattern, indicating a plugged oriﬁce.

A. No Charge

Use standard evacuating techniques. After evacuating system, weigh in the speciﬁed amount of refrigerant. (Refer to Table 1.)

B. Low Charge Cooling

Using Cooling Charging Charts, Fig. 40-43, vary refrigerant until the conditions of the appropriate chart are met. Note the charging charts are different from type normally used. Charts are based on charging the units to the correct superheat for the various operating conditions. Accurate pressure gage and temperature sensing device are required. Connect the pressure gage to the service port on the suction line. Mount the temperature sensing device on the suction line and insulate it so that outdoor ambient temperature does not affect the reading. Indoor-air cfm must be within the normal operating range of the unit.

C. To Use Cooling Charging Charts

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

Example: (Fig. 42)

Outdoor Temperature .......................85F

Suction Pressure ........................80psig

Suction Temperature should be ................68F

(Suction Temperature may vary±5F.)

D. Refrigerant Leaks

Proceed as follows to repair a refrigerant leak and to charge the unit:

1. Locate leak and ensure that refrigerant system pressure has been relieved.

2. Repair leak following accepted practices.

NOTE: Install a ﬁlter drier whenever the system has been opened for repair.

3. Add a small charge of R-22 refrigerant vapor to system and leak-test unit.

4. Evacuate refrigerant system if additional leaks are not found.

5. Charge unit with R-22 refrigerant, using a volumetriccharging cylinder or accurate scale. Refer to unit rating plate for required charge. Be sure to add extra refrigerant to compensate for internal volume of ﬁlter drier.

V. REPLACEMENT PARTS

A complete list of replacement parts may be obtained from your distributor upon request.

Fig. 39 — Condenser-Fan Adjustment

—30—

Fig. 40 — Cooling Charging Chart; 558D036

Fig. 42 — Cooling Charging Chart; 558D060

Fig. 41 — Cooling Charging Chart; 558D048

Fig. 43 — Cooling Charging Chart; 558D072

—31—

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.

Excessive head pressure.

Head pressure too low.

Excessive suction pressure.

Suction pressure too low.

Evaporator fan will not shut off. (Sizes 036-060 only.)

Compressor makes excessive noise (558D072 scroll only).

TROUBLESHOOTING

Refer to Tables 19-21 and Fig. 44 for Troubleshooting information.

Table 19 — Cooling Troubleshooting

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. Faulty wiring or loose connections in compressor

circuit. Compressor motor burned out, seized, or internal

overload open. Defective run/start capacitor, overload, start relay. Determine cause and replace.

One leg of of 3-phase power dead. Refrigerant overcharge or undercharge.

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. Determine cause and replace. Defective thermostat. Replace thermostat. Faulty condenser-fan motor or capacitor. Replace. Restriction in refrigerant system. Locate restriction and remove. Dirty air ﬁlter. Replace ﬁlter. Unit undersized for load. Decrease load or increase unit size. Thermostat set too low. Reset thermostat. Low refrigerant charge. Locate leak; repair and recharge. Leaking valves in compressor. Replace compressor.

Air in system. Condenser coil dirty or restricted. Clean coil or remove restriction.

Dirty air ﬁlter. Replace ﬁlter. Dirty condenser coil. Clean coil. Refrigerant overcharged. Recover excess refrigerant.

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

Low refrigerant charge. Check for leaks; repair and recharge. Compressor valves leaking. Replace compressor. Restriction in liquid tube. Remove restriction. High heat load. Check for source and eliminate. Compressor valves leaking. Replace compressor. Refrigerant overcharged. Recover excess refrigerant. Dirty air ﬁlter. Replace ﬁlter. Low refrigerant charge. Check for leaks; repair and recharge. Metering device or low side restricted. Remove source of restriction.

Insufficient evaporator airﬂow. Temperature too low in conditioned area. Reset thermostat.

Outdoor ambient below 25 F. Install low-ambient kit. Time off delay not ﬁnished. Wait for 30-second off delay.

Compressor rotating in wring direction.

Replace component.

Lower thermostat setting below room temperature.

Check wiring and repair or replace. Determine cause. Replace compressor.

Replace fuse or reset circuit breaker. Determine cause.

Recover refrigerant, evacuate system, and recharge to nameplate.

Recover refrigerant, evacuate system, and recharge.

Increase air quantity. Check ﬁlter and replace if necessary.

Reverse the 3-phase power leads as described in Start-Up section, page 17.

—32—

Table 20 — Durablade Economizer Troubleshooting

PROBLEM CAUSE REMEDY

Damper does not open.

Economizer operation limited to minimum position.

Damper does not close.

Economizer damper does not close on power loss.

LEGEND

C1 — Common Power EC — Enthalpy Control IFC — Indoor (Evaporator) Fan Contactor IFO — Indoor (Evaporator) Fan On OAT — Outdoor-Air Thermostat PL — Plug SAT — Supply-Air Thermostat SW — Economizer Position Switch

Indoor (evaporator) fan is off. 1. Check to ensure that 24 vac is present at terminal C1 on the IFC or that

No power to economizer motor.

Economizer motor failure. If the indoor (evaporator) fan and economizer motor are energized, verify that

OAT or EC set too high. 1. Set at correct temperature (3 F below indoor space temperature).

Verify economizer control board is correctly wired and works properly.

Check SAT. 1. After verifying that the OAT and EC settings and the economizer control

Incorrect wiring of economizer.

Verify economizer control board is functioning properly.

Check SAT. 1. After verifying that the wiring is correct and the economizer control board is

Economizer motor failure. If economizer control board and SAT are functioning properly, verify that there is

Verify that close-on-powerloss and economizer control board are functioning properly.

24 vac is present at the IFO terminal. Check whether 24 vac is present at PL6-1 (red wire) and/or PL6-3 (black wire). If 24 vac is not present, check wiring (see unit label diagram).

2. Check proper thermostat connection to G on the connection board.

1. Check that SW3 is properly making contact with the damper blade. Check that SW1 is in the NC (normally closed) position.

2. Check diode D18. If diode is not functioning properly, replace D18.

3. Conﬁrm that the economizer control board is grounded properly at PL6-4 (brown wire) and at brown terminal of the economizer control board (brown wire). The economizer motor must also be grounded properly at the negative motor terminal (brown wire).

4. Verify SW1 and SW3 are working and wired properly (see unit label diagram).

5. Check for 24 vac input at both PL6-1 (red wire) and PL6-3 (black wire). If 24 vac not present, check unit wiring (see unit label diagram). If 24 vac is found in both places, check for 24 vac at the yellow terminal of the economizer control board (yellow wire). If 24 vac power is not present, replace the economizer control board.

there is a minimum of 18 vdc at the positive motor terminal. If the motor is not operating, replace the motor.

2. Check OAT or EC by setting above outdoor temperature or humidity level. If the OAT or EC switches do not close, replace OAT or EC.

1. Perform the following tests when OAT or EC is closed, Y1 is called for and damper is at minimum position. Conﬁrm 24 vac on gray terminal of the economizer control board (gray wire). If 24 vac is not present, check wiring (see unit label diagram).

2. Verify that SW1 and SW3 are wired correctly and working properly (see unit label diagram).

3. Check to ensure that 24 vac exists at PL6-2 (blue wire). If 24 vac is not present, check wiring (see unit wiring label diagram).

4. Check 24 vac output at PL6-10 (white wire). If 24 vac is not present, replace economizer control board.

board wiring are correct, check to ensure that the 24 vac terminal of the SAT has 24 vac (white wire). If OAT, EC, and control board are functioning and wired properly and no 24 vac exists, check wiring (see unit label diagram).

2. If supply-air temperature is greater than 57 F, 24 vac should be found at terminal T2 on the SAT (pink wire). If 24 vac is not present, replace SAT.

1. Verify that SW2 and SW4 are wired and working properly (see unit label diagram).

2. Check diode D19. If diode is not functioning properly, replace D19.

1. After verifying that the wiring is correct, modulate the damper to the minimum position. Remove the calls for G.

2. If the damper does not move, check for 24 vac at PL6-1 (red wire). If 24 vac is not present, check wiring (see unit label diagram).

3. If damper still does not move, check for 24 vac at blue terminal of economizer control board (blue wire). If 24 vac is not present, replace the economizer circuit board.

functioning properly, place the OAT or EC switch in the closed position. Place a call for Y1 and open the damper to the fully open position. Conﬁrm that the 24 vac terminal of the SAT has 24 vac (white wire). If 24 vac is not present, check wiring (see unit label diagram).

2. If supply-air temperature is less than 52 F, 24 vac should be found at terminal T1 on the SAT (violet wire). If 24 vac not found, replace SAT.

a minimum of 18 vdc at the positive motor terminal. If a minimum of 18 vdc is present and the motor is still not operating, replace the motor.

1. Check voltage potential across batteries. If lower than 14 vdc, replace closeon-power-loss power supply (9-v alkaline batteries). It is recommended that you check this emergency power supply on a regular basis or whenever the ﬁlters are changed.

2. If the close-on-power-loss and economizer control board are functioning properly, check for 14 vdc or higher at the blue terminal of the economizer control board (blue wire) when power is disconnected from unit. If 14 vdc is not present, replace the control board.

—33—

Table 21 — PARABLADE Economizer Troubleshooting

PROBLEM CAUSE REMEDY

Damper does not open.

Economizer operation limited to minimum position.

Damper does not close.

Damper does not open or close according to enthalpy readings.

LED — Light-Emitting Diode

Evaporator fan not on. Check wiring between G on connection board and indoor (evaporator) fan No power to economizer

motor.

Economizer motor failure. If the indoor (evaporator) fan and economizer motor are energized, verify that

Economizer control module failure.

No power to economizer. 1. Disconnect power at TR and TR1. Disconnect jumper across P and P1.

Spring return failure. If power to unit is off and damper does not close, check for a bound linkage. If

Economizer motor failure. If the economizer control module is functioning properly, verify that there is a

Sensor incorrectly wired or bad.

contactor.

1. Disconnect power at TR and TR1. Disconnect jumper across P and P1.

2. Connect jumper across TR and 1.

3. Connect jumper across T1 and T.

4. If connected, remove enthalpy sensor from terminals S

5. Apply power (24 vac) to terminals TR and TR1. The LED should be off and the damper should be in the closed position.

6. Disconnect the factory-installed 620 ohm resistor from terminals S The LED should light up and the motor should drive towards open. If this does not happen, replace the economizer control module.

there is a minimum of 24 vac at terminals TR and TR1. If the motor is not operating, replace the motor.

1. To simulate high or low enthalpy, reconnect the factory-installed 620 ohm resistor across terminals S

2. Connect 1.2 Kohm checkout resistor across terminals SOand +. Turn the enthalpy set point to ‘‘A.’’ The LED should turn on, indicating low enthalpy. The motor should drive towards open. If LED does not light, replace module. If motor does not drive open, check motor operation.

3. Turn the enthalpy set point to ‘‘D.’’ The LED should turn off, indicating high enthalpy. The motor should drive towards closed. If these actions do not occur, replace module.

4. Disconnect 1.2 Kohm checkout resistor before resuming operation.

2. Connect jumper across TR and 1.

3. Connect jumper across T1 and T.

4. If connected, remove enthalpy sensor from terminals S installed 620 ohm resistor should be connected to terminals S

5. Apply power (24 vac) to terminals TR and TR1. The LED should be off and the damper should be in the closed position.

6. Disconnect the factory-installed 620 ohm resistor from terminals S The LED should light up and the motor should drive towards open. If this does not happen, replace the economizer control module.

linkage is not bound, then internal spring may be broken. Replace actuator.

minimum of 24 vac at terminals TR and TR1. If the motor is not operating, replace the motor.

To verify sensor operation, reconnect the + lead of the outdoor enthalpy sensor to the + terminal of the economizer control module. Connect a DC milliammeter between terminals S enthalpy sensor. The milliammeter should indicate between 3 and 25 mA if the sensor is operating properly. If the milliammeter indicates 0, the sensor may be wired backwards. If any other readings are shown, replace the sensor.

of the economizer control module and terminals S of the

and +.

and +. Factory-

and +.

—34—

—35—

AHA — Adjustable Heat Anticipator C—Contactor, Compressor CAP — Capacitor CC — Cooling Compensator COMP — Compressor Motor D—Diode EC — Enthalpy Control ECON — Economizer EPS — Emergency Power Supply

ER — Economizer Relay FPT — Freeze Up Protection Thermostat FU — Fuse GND — Ground HC — Heater Contactor (Strip Heat) HPS — High Pressure Switch IFC — Indoor Fan Contactor IFM — Indoor Fan Motor LPS — Low Pressure Switch

(Nine Volt Battery)

LEGEND

LSM — Limit Switch (Manual Reset) MTR — Motor OAT — Outdoor Air Thermostat OFM — Outdoor Fan Motor PL — Plug Assembly QT — Quadruple Terminal R—Relay SAT — Supply Air Thermostat SEN — Sensor SW1 — Switch Fully Open SW2 — Switch Fully Closed SW3 — Switch Min. Vent Position SW4 — Switch Max. Vent Position TB — Terminal Block TC — Thermostat-Cooling TDR — Time-Delay Relay TH — Thermostat-Heating TRAN — Transformer

Fig. 44 — Typical Wiring Schematic

Field Splice Marked Wire

Terminal (Marked) Terminal (Unmarked)

Terminal Block Splice

Splice (Marked) Factory Wiring

Field Control Wiring Field Power Wiring Accessory or Optional Wiring To indicate common potential

only. Not to represent wiring.

NOTES:

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

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

3. Thermostat: HH07AT170, 172, 174 & P272-2783 Subbase: HH93AZ176, 178 & P272-1882, 1883

4. Set heat anticipator at 1 amp.

5. Use copper conductors only.

6. Use copper, copper clad aluminum or aluminum conductors.

SERVICE TRAINING

Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including:

• Unit Familiarization

• Installation Overview

• Maintenance

• Operating Sequence

A large selection of product, theory, and skills programs are available, using popular video-based formats and materials. All include video and/or slides, plus companion book.

Classroom Service Training which includes ‘‘hands-on’’ experience with the products in our labs can mean increased conﬁdence that really pays dividends in faster troubleshooting and fewer callbacks. Course descriptions and schedules are in our catalog.

CALL FOR FREE CATALOG 1-800-962-9212

[ ] Packaged Service Training [ ] Classroom Service Training

I. PRELIMINARY INFORMATION

START-UP CHECKLIST

(Remove and Store in Job File)

MODEL NO.: DATE:

SERIAL NO.: TECHNICIAN:

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

M VERIFY THAT CONDENSATE CONNECTION IS INSTALLED AS SHOWN IN THE INSTALLATION

INSTRUCTIONS

M CHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS M CHECK THAT INDOOR AIR FILTERS ARE CLEAN AND IN PLACE M VERIFY THAT UNIT INSTALLATION IS LEVEL WITHIN TOLERANCES LISTED IN THE INSTALLATION

INSTRUCTIONS

M CHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND SETSCREW

TIGHTNESS

M CHECK PULLEY ALIGNMENT AND BELT TENSION: REFER TO INSTALLATION INSTRUCTIONS

III. START-UP

ELECTRICAL

SUPPLY VOLTAGE L1-L2

L2-L3 L3-L1 COMPRESSOR AMPS L1 L2 L3 INDOOR FAN AMPS L1 L2 L3

TEMPERATURES

OUTDOOR-AIR TEMPERATURE RETURN-AIR TEMPERATURE

DB DB WB

COOLING SUPPLY AIR

PRESSURES

REFRIGERANT SUCTION REFRIGERANT DISCHARGE

PSIG PSIG

M VERIFY REFRIGERANT CHARGE USING COOLING CHARGING CHARTS ON PAGE 31 M VERIFY THAT 3-PHASE SCROLL COMPRESSOR IS ROTATING IN CORRECT DIRECTION (558D072 ONLY)

CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE

CL-1

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Bryant 558D User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual