Unitary products group LA120 Installation Manual

INSTALLATION

(AIR COOLED)

MANUAL

CONTENTS

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . 4

AGENCY APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . 4

INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

SPLIT-SYSTEM

AIR CONDITIONER

NOTES, CAUTIONS AND WARNINGS

Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes
clarify or make the installation easier. Cautions
to prevent equipment damage. Warnings
alert installer that personal injury and/or equipment dam­age may result if installation procedure is not handled
properly.

CAUTION: READ ALL SAFETY GUIDES BEFORE YOU

BEGIN TO INSTALL YOUR UNIT.

SAVE THIS MANUAL

are intended to

are given

are given to

MODEL: LA120

035-18525-001-B-0203

TABLE OF CONTENTS

035-18525-001-B-0203

NOMENCLATURE . . . . . . . . . . . . . . . . . . . . . . . . . . .3

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . .4

RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

AGENCY APPROVALS . . . . . . . . . . . . . . . . . . . . . . .4

INSPECTION 4

INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

RIGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

VERTICAL / HORIZONTAL INSTALLATION . . . . . . . . . . 8

DUCT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

DRAIN CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

REFRIGERANT MAINS . . . . . . . . . . . . . . . . . . . . . . . . . . 9

POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . 10

SUPPLY AIR BLOWER ADJUSTMENT . . . . . . . . . . . . . 11

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

EVAPORATOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

DRAIN PAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

LUBRICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

BELTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

LIST OF FIGURES

Fig. #

1. UNIT SUSPENSION MOUNTING LA120 (HORIZONTAL

APPLICATIONS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2. VERTICAL AND HORIZONTAL APPLICATION . . . . . . 8

Pg. #

Fig. # Pg. #

8. FIELD WIRING DIAGRAMS FOR POWER SUPPLY . 12

9. FIELD WIRING DIAGRAM COOLING

(COOLING ONLY) . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

10. TYPICAL MOTOR MOUNTING ASSEMBLY . . . . . . . 13

11. HOLE LOCATIONS FOR PRESSURE DROP

READINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

12. PRESSURE DROP ACROSS A DRY

EVAPORATOR COIL VS. SUPPLY AIR CFM . . . . . . 14

13. BLOWER PERFORMANCE CURVE . . . . . . . . . . . . . 15

14. UNIT DIMENSIONS AND CLEARANCES . . . . . . . . . 16

LIST OF TABLES

Tbl. #

1. PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. APPLICATION LIMITATIONS . . . . . . . . . . . . . . . . . . . 5

3. LA120 UNIT SUSPENSION WEIGHTS (LBS) . . . . . . . 7

4. ELECTRIC HEATER DIMENSIONS FA120 . . . . . . . . . 9

5. ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . 11

6. SUPPLY AIR BLOWER MOTOR PULLY

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7. BLOWER MOTOR AND DRIVE DATA . . . . . . . . . . . 14

8. SUPPLY AIR BLOWER PERFORMANCE 1, 2 . . . . . 15

9. ACCESSORY STATIC RESISTANCE (IWG)
(TO BE INCLUDED WITH DUCT SYSTEM

STATIC RESISTANCE) . . . . . . . . . . . . . . . . . . . . . . 16

Pg. #

3. VERTICAL AND HORIZONTAL APPLICATION . . . . . . 8

4. SUPPLY AIR PLENUM ACCESSORY . . . . . . . . . . . . . 9

5. BASE ACCESSORY (VERTICAL ONLY) . . . . . . . . . . . 9

6. RECOMMENDED DRAIN PIPING . . . . . . . . . . . . . . . 10

7. RETURN AIR GRILLE ACCESSORY (VERTICAL) . . 10

2 Unitary Products Group

035-18525-001-B-0203

NOMENCLATURE

YORK SPLIT INDOOR PRODUCT NOMENCLATURE

L A

120 C 0 0 A 2 A A A 1 A

Model # Model Number Description Options

L Product Category L = Air Handling Unit-Cooling F = Air Handlng Unit-Heat Pump

A Product Identifier

Nominal Cooling

120

C Heat Type C = Cooling Only

00

A Airflow Options A = None

2Voltage 6 = 208/230-460-3-60

A Factory Options

AA Special Options

1 Generation

AStyle A = Style A B = Style B

*NOT AVAILABLE IN HEAT PUMP

Capacity
MBH

Nominal Heating
Capacity

A = R-22 Standard Efficiency 2-Pipe
B = R-22 Standard Efficiency 4-Pipe

090 = 7-1/2 Ton
120 =10 Ton
150 = 12-1/2 Ton
180 = 15 Ton
240 = 20 Ton

00 = No Heat Installed

A = None
B = Disconnect

AA = None
AC = Technicoat Coil

st

1 = 1

Generation 2 = 2ndGeneration

Unitary Products Group 3

GENERAL

This completely assembled unit includes a well-insu­lated cabinet, a DX cooling coil with copper tubes and
aluminum fins, 1 expansion valve, 1 distributor, throw­away filters, a centrifugal blower, a blower motor con­tactor and a small holding charge of Refrigerant-22. A
blower motor with adjustable drive is factory mounted
on every unit.

035-18525-001-B-0203

This product must be installed in strict compli­ance with the enclosed installation instructions
and any applicable local, state, and national
codes including but not limited to, building,
electrical and mechanical codes.

Supplemental resistance heaters, a supply air plenum,
a return air grille and a base are available as accesso­ries for field installation.

The unit is shipped in the vertical position with a verti­cal air discharge. The blower section can be reposi­tioned as shown in Figure 2 for horizontal applications.

SAFETY CONSIDERATIONS

Installer should pay particular attention to the words:
NOTE, CAUTION, and WARNING. Notes
to clarify or make the installation easier. Cautions
given to prevent equipment damage. Warnings
given to alert installer that personal injury and/or equip­ment damage may result if installation procedure is not
handled properly.

Improper installation may create a condition
where the operation of the product could cause
personal injury or property damage.

Improper installation, adjustment, alteration,
service or maintenance can cause injury or
property damage. refer to this manual for
assistance or additional information, consult a
qualified installer, service agency.

are intended

are

are

RENEWAL PARTS

Refer to parts Manual for complete listing of replace­ment parts on this equipment. The forms referenced in
this instruction may be ordered from:

Standard Register
2101 West Tecumseh Road
Norman, Oklahoma 73069
Toll Free TEL: [phone]
Toll Free FAX: [phone]

This instruction covers the installation and operation of
evaporator blower units. For information on the opera­tion of the matching condensing unit, refer to Form
035-18506-001.

AGENCY APPROVALS

Design certified by UL as follows:

1. For use as a cooling coil/air handler only.

2. For indoor installation only.

INSPECTION

As soon as a unit is received, it should be inspected for
possible damage during transit. If damage is evident,
the extent of damage should be noted on the carrier's
freight bill. A separate request for inspection by the
carrier's agent should be made in writing.

4 Unitary Products Group

035-18525-001-B-0203

TABLE 1: PHYSICAL DATA

DESCRIPTION

Rows Deep 3

Rows High 32

Evaporator

Coil

Blower

Filters

1

2

Electric

Heaters

Centrifugal

Operating Charge (Refrigerant-22) Lbs. - Oz. 5-8

Weight (Lbs.)

Accessory

Weights (Lbs.)

1.

Refer to data in Table 8 for complete motor specifications.

2.

Filters are throwaway type 2” filters may be used, if required by removing the 1” filter retaining angles provided in the filter rack.

Finned Length (in.) 54.5

Fins / Inch 13

Tube O. D. (in.) 3/8

Face Area (Sq. Ft.) 12.1

Wheel Dia. X Width (in.) 18 X 18

Qty. & Size (in.) (6) 20 X 20 X 1

Face Area (Sq. Ft.) 16.7

Shipping 439

Operating 399

10 KW 66

16 KW 70

26 KW 74

36 KW 77

Supply Air Plenum 144

Base 65

Return Air Grille 19

Horizontal Suspension 68

Steam Coil 149

Hot Water Coil 135

UNIT MODEL

LA120

TABLE 2: APPLICATION LIMITATIONS

Power

Supply

208/230-3-60 187 252

460-3-60 432 504

1.

Utilization Range”A” in accordance with ARI Standard 110.

Unitary Products Group 5

Voltage

Var iat ion

Min. Max. Min. Max. Min. Max. Min. Max.

1

Supply Air Range

CFM

2800 6800 65/67 96/72 - 77

Entering Air Temperatures, ºF

Cooling-db/wb Heating-db