Rheem (-)LKBA180DM, (-)LKBA180CL, (-)LKBA180YL, (-)LKBA180YM, (-)LKBA240CL Installation Instructions Manual

DO NOT DESTROY. PLEASE READ CAREFULLY AND

KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALI­FIED, LICENSED SERVICE PERSONNEL FOR PROPER INSTALLA­TION, ADJUSTMENT AND OPERATION OF THIS UNIT. READ
THESE INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING
INSTALLATION OR OPERATION. FAILURE TO FOLLOW THESE
INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION,
ADJUSTMENT, SERVICE OR MAINTENANCE POSSIBLY RESULT­ING IN FIRE, ELECTRICAL SHOCK, PROPERTY DAMAGE, PER­SONAL INJURY OR DEATH.

WARNING

!

92-23577-58-01

SUPERSEDES 92-23577-58-00

INSTALLATION INSTRUCTIONS

FOR PACKAGE AIR CONDITIONERS

NOMINAL 15, 20 & 25 TON (-)LKB MODELS
AND 15 & 20 TON (-)LMB MODELS

Recognize this symbol as an indication of Important Safety Information!

!

I. TABLE OF CONTENTS

I. Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

II. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

III. Checking Product Received . . . . . . . . . . . . . . . . . . . . . 2

IV. Equipment Protection . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

Electrical & Physical Data Tables. . . . . . . . . . . . . . . . 6,7

V. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

A. General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

1. Pre-Installation Check Points . . . . . . . . . . . . . . . . 8

2. Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

B. Outside Slab Installation . . . . . . . . . . . . . . . . . . . . . . 8

C. Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

D. Rooftop Installation . . . . . . . . . . . . . . . . . . . . . . . . . . 9

VI. Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

VII. Filters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

VIII. Conversion Procedure. . . . . . . . . . . . . . . . . . . . . . . . . 10

IX. Condensate Drain, Indoor Coil . . . . . . . . . . . . . . . . . . 11

X. Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A. Power Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

B. Special Instructions for Power

Wiring with Aluminum Conductors . . . . . . . . . . . . . 11

C. Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

D. Internal Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

E. Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

F. Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

XI. Indoor Air Flow Data . . . . . . . . . . . . . . . . . . . . . . . . . . 12

XII. Crankcase Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

XIII. Pre-Start Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

XIV. Startup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

XV. Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

XVI. Auxiliary Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

XVII. Heater Kit Characteristics. . . . . . . . . . . . . . . . . . . . 16-18

XVIII. Miscellaneous

Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 20, 21

Charge Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 23

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

ä Installation Instructions are updated on a regular basis. This
is done as product changes occur or if new information
becomes available. In this publication, an arrow (ä) denotes
changes from the previous edition or additional new material.

II. INTRODUCTION

PROPOSITION 65: THIS APPLIANCE CONTAINS FIBER­GLASS INSULATION. RESPIRABLE PARTICLES OF
FIBERGLASS ARE KNOWN TO THE STATE OF CALIFOR­NIA TO CAUSE CANCER.

THE MANUFACTURER’S WARRANTY DOES NOT COVER
ANY DAMAGE OR DEFECT TO THE AIR CONDITIONER
CAUSED BY THE ATTACHMENT OR USE OF ANY COMPO­NENTS, ACCESSORIES OR DEVICES (OTHER THAN
THOSE AUTHORIZED BY THE MANUFACTURER) INTO,
ONTO OR IN CONJUNCTION WITH THE AIR CONDITION­ER. YOU SHOULD BE AWARE THAT THE USE OF UNAU­THORIZED COMPONENTS, ACCESSORIES OR DEVICES

MAY ADVERSELY AFFECT THE OPERATION OF THE AIR
CONDITIONER AND MAY ALSO ENDANGER LIFE AND
PROPERTY. THE MANUFACTURER DISCLAIMS ANY
RESPONSIBILITY FOR SUCH LOSS OR INJURY RESULT­ING FROM THE USE OF SUCH UNAUTHORIZED COMPO­NENTS, ACCESSORIES OR DEVICES.

This booklet contains the installation and operating instructions
for your package air conditioner. There are a few precautions
that should be taken to derive maximum satisfaction from it.
Improper installation can result in unsatisfactory operation or
dangerous conditions.

Read this booklet and any instructions packaged with separate
equipment required to make up the system prior to installation.
Give this booklet to the owner and explain its provisions. The
owner should retain this booklet for future reference.

III. CHECKING PRODUCT RECEIVED

Upon receiving the unit, inspect it for any damage from ship­ment. Claims for damage, either shipping or concealed, should
be filed immediately with the shipping company. Check the unit
model number, heating size, electrical characteristics, and
accessories to determine if they are correct.

IV. EQUIPMENT PROTECTION FROM THE

ENVIRONMENT

The metal parts of this unit may be subject to rust or deteriora­tion in adverse environmental conditions. This oxidation could
shorten the equipment’s useful life. Salt spray, fog or mist in
seacoast areas, sulphur or chlorine from lawn watering sys­tems, and various chemical contaminants from industries such
as paper mills and petroleum refineries are especially corro­sive.

If the unit is to be installed in an area where contaminants
are likely to be a problem, special attention should be
given to the equipment location and exposure.

1. Avoid having lawn sprinkler heads spray direction on the
unit cabinet.

2. In coastal areas, locate the unit on the side of the building
away from the waterfront.

3. Shielding provided by a fence or shrubs may give some
protection.

Regular maintenance will reduce the buildup of contami­nents and help to protect the unit’s finish.

DISCONNECT ALL POWER TO THE UNIT BEFORE START­ING MAINTENANCE. FAILURE TO DO SO CAN RESULT IN
SEVERE ELECTRICAL SHOCK OR DEATH.

1. Frequent washing of the cabinet, fan blade and coil with
fresh water will remove most of the salt or other contami­nants that build up on the unit.

2. Regular cleaning and waxing of the cabinet with a good
automobile polish will provide some protection.

3. A good liquid cleaner may be used several times a year to
remove matter that will not wash off with water.

Several different types of protective coatings are offered in
some areas. These coatings may provide some benefit, but the
effectiveness of such coating materials cannot be verified by
the equipment manufacturer.

The best protection is frequent cleaning, maintenance and
minimal exposure to contaminants.

2

Recognize this symbol as an indication of Important
Safety Information!

!

WARNING

!

WARNING

!

WARNING

!

3

FIGURE 1. UNIT DIMENSIONS (BOTTOM VIEW)

FIGURE 2. UNIT DIMENSIONS (BOTTOM VIEW)

A0886-16

A0886-20

4

FIGURE 3. UNIT DIMENSIONS

FIGURE 4. UNIT DIMENSIONS

A0886-17

A0886-21

FIGURE 5. COMPONENT LOCATION

A0886-33

5

FIGURE 6. UNIT
DIMENSIONS & COM­PONENT ACCESS

A0886-18

FIGURE 7. UNIT DIMENSIONS &
COMPONENT ACCESS

A0886-19

FIGURE 8. INTERNAL COMPONENT LOCATIONS

A0886-32

80/80

6

MODEL

NUMBER

(-)LKB

A180CL 3-60-208-230 12.4/12.4 88 2.4 11.5 74/74 80/80 80/80

A180CM 3-60-208-230 12.4/12.4 88 2.4 14.7 77/77 80/80

A180DL 3-60-460 6.4 44 2.0 7.0 43/43 45/45 45/45

A180DM 3-60-460 6.4 44 2.0 10.0 46/46 50/50 50/50

A180YL 3-60-575 5.0 34 1.0 8.0 34/34 35/35 35/35

A180YM 3-60-575 5.0 34 1.0 8.0 34/34 35/35 35/35

A240CL 3-60-208-230 17.8/17.8 124 2.4 14.7 100/100 110/110 110/110

A240CM

3-60-208-230 17.8/17.8 124 2.4 22.3 108/108 110/110 110/110

A240DL

3-60-460 9.3 59.6 2.0 10 58/58 60/60 60/60

A240DM 3-60-460 9.3 59.6 2.0 11.2 59/59 60/60 60/60

A240YL

3-60-475 7.7 49.4 1.0 8.0 45/45 50/50 50/50

A240YM

3-60-475 7.7 49.4 1.0 8.8 46/46 50/50 50/50

ELECTRICAL

PHASE

FREQUENCY

(HZ)

VOLTAGE

(VOLTS)

COMPRESSOR

LOCKED

ROTOR

AMPERES

(LRA)

RATED LOAD

AMPERES

(RLA)

FULL LOAD

AMPERES

(FLA)

MINIMUM

CIRCUIT

AMPACITY

AMPERES

MIN.

AMPS

FAN

MTR

BLWR

MTR

MAX.

AMPS

FUSE OR HACR

CIRCUIT

BREAKER

TABLE A. ELECTRICAL DATA (-)LKB MODELS

MODEL

NUMBER

(-)LKB

A180CL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 82/72 1677 1897

A180CM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 82/72 1707 1927

PHYSICAL

DRIVE

TYPE

FILTER OUTDOOR COIL WEIGHT

RECOMMENDED

NO. AND SIZE

[mm x mm x mm]

AREA

SQ. FT.

NO.

ROWS

CFM

R22 OZ.

[g]

SYSTEMS

1,2/3,4

NET
LBS.

(kg)

SHIPPING

LBS.

(kg)

TABLE B. PHYSICAL DATA (-)LKB MODELS

A180DL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 82/72 1677 1897

A180DM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 82/72 1707 1927

A180YL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 82/72 1677 1897

A180YM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 82/72 1707 1927

A240CL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 77/72

77/72

77/72

77/72

77/72

77/72

1755 1975

A240CM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 1776 1996

A240DL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 1755 1975

A240DM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 1776 1996

A240YL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 1755 1975

A240YM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 1.0 16,000 1776 1996

A300CL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 2.0 16,000 128/121

128/121

128/121

128/121

128/121

128/121

1820 2040

A300CM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 2.0 16,000 1841 2061

A300DL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 2.0 16,000 1820 2040

A300DM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 2.0 16,000 1841 2061

A300YL BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 2.0 16,000 1820 2040

A300YM BELT

(3) 2" x 18" x 18"
(3) 2" x 18" x 24"

36.0 2.0 16,000 1841 2061

A300CL

A300CM

A300DL

A300DM

A300YL

A300YM

3-60-208-230
3-60-208-230

3-60-460
3-60-460
3-60-575
3-60-575

21.0/21.0

21.0/21.0

10.4

10.4

8.5

8.5

156
156

75
75
54
54

2.3

2.3

1.5

1.5

1.0

1.0

14.7

22.3

10.0

11.2

8.0

8.8

114/114
122/122

61
62
49
49

125/125
125/125

70
70
50
50

125/125
125/125

70
70
50
50

A180YM

7

MODEL

NUMBER

(-)LMB

A180CL 3-60-208-230 12.4/12.4 88 2.4 11.5 74/74 80/80 80/80

A180CM

3-60-208-230 12.4/12.4 88 2.4 14.7 77/77 80/80 80/80

A180DL

3-60-460 6.4/6.4 44 2.0 7.0 43/43 45/45 45/45

A180DM 3-60-460 6.4/6.4 44 2.0 10.0 46/46 50/50 50/50

A180YL

3-60-575 5.0/5.0 34 1.0 8.0 34/34 35/35 35/35

A180YM

A240CL

A240CM

A240DL

A240DM

A240YL

A240YM

A240CL

A240CM

A240DL

A240DM

A240YL

A240YM

3-60-575
3-60-208-230
3-60-208-230

3-60-460

3-60-460

3-60-575

3-60-575

5.0/5.0

17.5/17.5

17.5/17.5

9.0/9.0

9.0/9.0

7.1/7.1

7.1/7.1

34
123
123

62

62

50

50

1.0

2.4

2.4

2.0

2.0

1.0

1.0

8.0

14.7

22.3
10

11.2

8.0

8.8

34/34
99/99

107/107

57/57
58/58
43/43
43/43

35/35
110/110
110/110

60/60

60/60

45/45

45/45

35/35
110/110
110/110

60/60

60/60

45/45

50/50

ELECTRICAL

PHASE

FREQUENCY

(HZ)

VOLTAGE

(VOLTS)

COMPRESSOR

LOCKED

ROTOR

AMPERES

(LRA)

RATED LOAD

AMPERES

(RLA)

FULL LOAD

AMPERES

(FLA)

MINIMUM

CIRCUIT

AMPACITY

AMPERES

MIN.

AMPS

FAN

MTR

BLWR

MTR

MAX.

AMPS

FUSE OR HACR

CIRCUIT

BREAKER

TABLE C. ELECTRICAL DATA (-)LMB MODELS

MODEL

NUMBER

(-)LMB

PHYSICAL

DRIVE

TYPE

FILTER OUTDOOR COIL WEIGHT

RECOMMENDED

NO. AND SIZE

AREA

SQ. FT.

NO.

ROWS

CFM

R22 OZ.

SYSTEMS

1,2/3,4

NET

LBS.

SHIPPING

LBS.

TABLE D. PHYSICAL DATA (-)LMB MODELS

A180CL

BELT

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

(3) 2 x 18.0 x 18.0
(3) 2 x 18.0 x 24.0

36 1.00 16000 82/72

82/72

82/72

82/72

82/72

82/72

117/107

117/107

117/107

117/107

117/107

117/107

1677 1897

A180CM BELT 36 1.00 16000 1707

1927

A180DL BELT 36 1.00 16000

1677 1897

A180DM BELT 36 1.00 16000 1707

1927

A180YL BELT 36 1.00 16000

1677 1897

BELT

BELT

BELT

BELT

BELT

BELT

BELT

36

36

36

36

36

36

36

1.00

2.00

2.00

2.00

2.00

2.00

2.00

16000

16000

16000

16000

16000

16000

16000

1707

1755

1776

1755

1776

1755

1776

1927

1975

1996

1975

1996

1975

1996

8

V. INSTALLATION

A. GENERAL

1. PRE-INSTALLATION CHECK-POINTS
Before attempting any installation, the following points

should be carefully considered:
a. Structural strength of supporting members.

(rooftop installation)
b. Clearances and provision for servicing.
c. Power supply and wiring.
d. Air duct connections.
e. Drain facilities and connections.
f. Location for minimum noise.

2. LOCATION
These units are designed for outdoor installations. They

can be mounted on a slab or rooftop. They are not to be
installed within any part of a structure such as an attic,
crawl space, closet, or any other place where condenser
air flow is restricted or other than outdoor ambient condi­tions prevail. Since the application of the units is of the
outdoor type, it is important to consult your local code
authorities at the time the first installation is made.

B. OUTSIDE SLAB INSTALLATION (Typical outdoor slab

installations are shown in Figures 9 and 10.)

1. Select a location where external water drainage cannot
collect around the unit.

2. Provide a level concrete slab extending 3" beyond all
four sides of the unit. The slab should be sufficient
above grade to prevent ground water from entering the
unit. IMPORTANT: To prevent transmission of noise or

vibration, slab should not be connected to building struc­ture.

3. The location of the unit should be such as to provide
proper access for inspection and servicing.

4. Locate unit where operating sounds will not disturb
owner or neighbors.

5. Locate unit so roof runoff water does not pour directly on
the unit. Provide gutter or other shielding at roof level.
Do not locate unit in an area where excessive snow drift­ing may occur or accumulate.

C. CLEARANCES

The following minimum clearances must be observed for
proper unit performance and serviceability.

1. Provide 48" minimum clearance at the front of the unit.
Provide 18" minimum clearance at all other sides of the
unit.

2. Provide 60" minimum clearance between top of unit and
maximum 3 foot overhang.

3. Unit is design certified for application on combustible
flooring with 0" minimum clearance.

4. See Figure 9 for illustration of minimum installation-ser­vice clearances.

FIGURE 9

FIGURE 10

PACKAGED AIR CONDITIONER

OUTSIDE SLAB INSTALLATION, BASEMENT OR

CRAWL SPACE DISTRIBUTION SYSTEM

PACKAGED AIR CONDITIONER

OUTSIDE SLAB INSTALLATION, CLOSET DISTRIBUTION

SYSTEM. SLAB FLOOR CONSTRUCTION

A0886-22

A0886-23

9

D. ROOFTOP INSTALLATION

1. Before locating the unit on the roof, make sure that the
strength of the roof and beams is adequate at that point
to support the weight involved. This is very important
and user’s responsibility.

2. For rigging and roofcurb details, see Figures 11 and 12.
Use field-furnished spreaders.

3. For roofcurb assembly, see Roofcurb Installation Instruc­tions.

4. If the roofcurb is not used, provisions for disposing of
condensate water runoff must be provided.

5. The unit should be placed on a solid and level roofcurb
or platform of adequate strength. See Figure 13.

6. The location of the unit on the roof should be such as to
provide proper access for inspection and servicing.

IMPORTANT: If unit will not be put into service immediately,
cover supply and return openings to prevent excessive con­densation.

FIGURE 12

FIGURE 11

PACKAGED AIR CONDITIONER

ROOFCURB INSTALLATION

A0886-12

A0888-02

A0888-02

PACKAGED AIR CONDITIONER

RIGGING FOR LIFTING