Bryant 558D User Manual

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

1

A 1

⁄89 dia [28.6] field power supply hole

3

B

⁄49-14 NPT condensate drain

3

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

1

⁄4-in. clearance between roof curb

5

⁄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’’

11

⁄

16

9

558D036-072

21

[551]

169

[406]

‘‘D’’Alt

Drain Hole

13⁄

4

9

[44.5]

Power Control Connector Package Accessory

3

⁄49 NPT1⁄29 NPT

1

⁄49 NPT1⁄29 NPT

1

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.

1

⁄4...1100

1

⁄

1

⁄

5

⁄

1

⁄4...1100

2
2

8

1

⁄

2

1

⁄

2

5

⁄

8

1

⁄4...1100

1

⁄

5

⁄

5

⁄

1

⁄4...1100

2
8

8

5

⁄

8

—

5

⁄

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

3

⁄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)

R

Y1

Y2

W1

W2

G

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

2.8

1.3

1.3\ — — 6.8 15 7 31

3.5

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

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

3

1371

=

3

= 457

7

—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—