Carrier 38TKB024 SERIES300, 38TKB024 SERIES330, 38TKB036 SERIES300, 38TKB042 SERIES330, 38TKB048 SERIES300 Installation Guide

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HEATING & COOLING

Vish www c_rier corn

Installation and Start-Up Instructions

NOTE: Read the entire instruction manual before beginning the

installation.

This symbol -+ indicates a change since last issue.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance,

nr use can cause explosion, fire. electrical shock, or other conditions which may cause personal injury or property damage.

Consult a qualified installer, service agency, or your distributor or

branch for inlbrmation or assistance, The qualified installer or

agency must use factory-authorized kits or accessories when

modifying this product. Refer to the individual instructions pack- aged with the kits or accessories when installing.

Follow all safety codes. Wear sal_ty glasses and work gloves. Use

quenching cloth for brazing operations. Have fire extinguisher

available. Read these instructions thoroughly and follow all warning or cautions attached to the unit. Consult local building

codes and National Electrical Code (NEC) for special require-

ments.

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 these 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 signifies hazards

which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage.

''i2LIitTIIX,-1

Before installing, modifying, or servicing system, main elec- trical disconnect switch must be in the OFF position. There

may be more than 1 disconnect switch. Lock out and tag switch with a suitable warning label. Electrical shock can

cause personal injury or death.

INSTALLATION RECOMMENDATIONS

NOTE: In some cases, noise in the living area has been traced to

gas pulsations from improper installation of equipment.

I. Locate the unit away from windows.

2. Ensure that vapor and liquid line diameters arc appropriate to the capacity of the unit. (See Table 1.)

3. Run refrigerant tubes as directly as possible by aw_iding unnecessary turns and bends.

4. Leave some slack between the structure and the unit to absorb vibration.

38TKB

Air Conditioning Unit

____)

When passing refrigerant tubes through the wall. seal the opening with RTV or other pliable silicombased caulk. (See

Fig. 3.)

6. Avoid direct lineset contact with water pipes, dnctwork, floor joists, wall studs, floors, and walls.

7, Do not suspend refrigerant tubing from joists and studs with a

rigid wire or strap which comes in direct contact with the

tubing. (See Fig. 3.)

8. Ensure that tubing insulation is pliable and completely sur- rounds the vapor line.

9. When necessary, use hanger strops which are I in. wide and conform to the shape of the tubing insulation. (See Fig. 3.)

10. Isolate the hanger straps from the insulation by using metal sleeves bent to conform to the shape of the insulation.

When outdoor unit is connected to factory-approved indoor unit. outdoor unit contains system refrigerant charge for operation with factory-approved indoor unit of the same size when connected by

15 fi of field-supplied tubing. For proper unit operation, check

refrigerant charge using charging information located on control box cover.

IMPORTANT: Maximum liquid-line size is 3/8dn. O.D. tbr all residential applications including long line.

IMPORTANT: Always install a liquid-line filter drier. Reler to Product Data Digesl for appropriate part nmnher. Obtain filter

driers from your local distributor or branch.

Fig. 1--Model 38TKB

A98519

Manufacturer reserves the dght to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

PC 101 Catalog No. 563-754 Printed in U.S.A. Form 38TKB-SSI Pg 1 11-98 Replaces: 38TKB-3SI

Table 1--Refrigerant Connections and Recommended Liquid and Vapor Tube Diameters (In.)

UNIT

SIZE

Connection Diameter Tube Diameter

018, 024

030, 036

042, 048

060

Notes: 1 Tube diameters are for lengths up to 50 It For tube sets ever 50 ft. consu)t Residential Long-Line Application Guideline.

2 DO not apply capillary tube indoor coils to these units

LIQUID

Connection Diameter Tube Diameter

3/8 3/8 3/8 3/8

VAPOR VAPOR (LONG LINE)

Connection Diameter

5/8 5/8 3/4 3/4 7/8 7/8 7/8 1-1/8

5/8 3/4

7/8

Tube Diameter

3/4

7/8 1-1/8 1-1/8

INSTALLATION

Step 1--Check Equipment and Job Site

UNPACK UNIT-- Move to final location. Remove carton taking care not to damage unit.

INSPECT EQUIPMENT--File claim with shipping company prior to installation if shipment is damaged or incomplete. Locate unit rating plate on unit service panel. (See Fig, 2.) It contains information needed to properly install unit. Check rating plate to be sure unit matches job specifications.

Step 2--Install on a Solid, Level Mounting Pad

If conditions or local codes require the unit be attached to a pad,

tie down bolts should be used and fastened through knockouts

AIR tN

AIR DISCHARGE

provided in unit base paR. Refer to unit mounting pattern shown in Fig. 2 te determine base pan size and knockout hole location.

On rooftop applications, mount on level platfonn Dr frame. Place unit above a load-bearing wall and isolate unit and tubing set frDm

structure. Arrange supporting members to adequately support unit

and minimize transmission of vibration to building. Consult local codes governing rooftop applications.

Roof mounted units exposed to winds above 5 mph may require wind baffles. Consuft Low-Ambient Guideline for wind baffle

construction. NOTI=: Unit must be level to within -+2_ per compressor manu-

facturer specifications.

i I L --', 3f8" (9 53) DIA TIEDOWN

I, _ i ,o_ ! KNOCKOUTS IN SASEPAN

1, - "i (2) PLACES

AIR DISCHARGE _-

"_ B •

AIR IN

AIR DISCHARGE 1 9/1"_1_16".-_d_

LINE CONNECTION 144-6)

NOTES:

1 ALLOW 30" (762) CLEARANCE TO sEevIcE END OF

UNIT 48" (1219) ABOVE UNIT, 6" (152) ON ONE SIDE, 12" (306) 4 DIMENSIONS IN PARENTHESIS ARE IN MILLIMETERS ON REMAINING SIDE, AND 24" (610) BE nNEEN 5 SERIES DESIGNATION IS THE 13TH POSITION OF THE UNIT UNITS FOR PROPER AIRFLOW MODEL NUMBER

2 MINIMUM OUTDOOR OPERATING AMBIENT IN COOLING MODE IS

55F (12 8_C), (UNLESS LOW AMBIENT CONTROL IS USED) MAX 125"F (51 7°C)

MODEL 38TKB

013, 024, 030, 036

042, 048, 060

UNIT MOUNTING PATTERN 8 3G6"

VIEW FROM TOP (207.9)

,_1_ 2 1/2"

1637) FIELD POWER SUPPLY CONN

_-718" (2222) DIA HOLE WITH

I l/B" (28 57) DIA KNOCKOUT

(ALL SIZES) AND 1 3/B" (3492) DIA KNOCKOUT (036 THRU 06C

SIZES ONLY) FIELD CONTROL SUPPLY

CONN 7f8" (22 22) DIA HOLE

__ 10 V2"

(2667)

4 3116"

(106 3")_

3 MAXIMUM OUTDOOR OPERATING AMBIENT IN HEATING MODE IS 66 F {16.9o0)

A B

In In.

22-1/2 27-1/2

30 34-15/16

Fig. 2--Unit Reference Drawing

IIII

_-_j

ACCESS

PANEL "

In.

2-13/16

A91055

In.

6-15/16

9-3/4

NOTE:Avoidcontact between tubing and structure

OUTDOOR WALl: INDOOR WALL

.___)

CAULK_IQUID TUBE

_L.__INSULATION _7'_y _'_ L.-- VAPOR TUBE

THROUGH THE WALL

HANGER STRAP

(AROUNDVAPOR--_--

TUBE_I i,

1" MIN _

SUSPENSION

.,_r/'-JOIST

INSULATION

VAPORTUBE

LIQUID TUBE

A94028

Fig. 3--Piping Installation

Step 3--Clearance Requirements

When installing, allow sufficient space for airflow, wiring, ret_ig- erant piping, and service, Allow 30 in. clearance to service end of unit and 48 in. abouve unit. For proper airflow, a 6 in. clearance on

1 side of anit and 12 in. on all remaining sides must be main_aineO.

Maintain a distance of 24 m. between units. Position so water. snow, or ice from roof or eaves cannot fall directly on unit.

On rooftop appfications, locate unit at feast 6 in. above roof surface.

Step 4--Operating Ambients

The minimum outdoor operating ambient in ¢ooling mode is 55°F.

and the maximum outdoor operating ambient in cooling mode is

125°F.

Step 5--Replace Indoor AccuRater_ Piston, if Required

Check indoor coil piston to see if it matches the required piston shown on unit rating plate. If it does not match, replace indoor coil piston with piston shipped with this unit. The piston shipped with outdoor unit is correct for any approved indoor coil cmnbination.

Step 6--Make Tubing Connections

Vt_lLrJ/'-._:UI17[_]

Relieve pressure and recover all refrigerant before syslem repair or final unit disposal to avoid per_onal mjut 3' or dcznb.

Use all ,service pots and open all flow-control devices. including solenoid valves.

F,,_[,{_T_[,]: I

To prevent damage h) urm or service valves observe the

1hi)owing:

• Use a brazing shield.

• Wrap service valves with wet cloth or use a heat sink ma_eriah

Outdoor units may be connected to indoor section using accessory tubing package or field-supplied refrigerant tubing of correct size and condition. For tubing requiremcnts beyond 50 It. substantial capacity and performance losses can occur. Following the recom- mendations in the Residential Split System Long-Line Application Guideline will reduce these losses. Refer to Table I for field tubing equivalent line length. Refer to Table 2 for accessory require-

morns.

---). For buried-line applications greater than 36 in.. consult your local distributor.

If refrigerant tubes or indoor coil are exposed to atmosphere, they must be evacuated to 500 microns to eliminate contamination and

moisture in the system, OUTDOOR UNIT CONNECTED TO FACTORY-APPROVED

INDOOR UNIT-- Outdoor unit contains correct system refriger- ant charge for operation with indoor unit of same size when connected by 15 fi of field-supplied or factory-accessory tubing. Check refrigerant charge for maximum efficiency.

REFRIGERANT TUBING- Connect tubing to fittings on out- door unit vapor and liquid service valves. (See Table 1.) Use refrigerant grade tubing.

SWEAT CONNECTION -- Service valves are closed from fac- tory and ready for brazing. After wrapping the service valve with

a wet cloth, the robing set can be brazed to the service valve using either silver bearing or non-silver bearing brazing material. Con- sult local code requirements. Refrigerant tubing and indoor coil are now ready for leak testing. This check should include all field and factory joints.

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To avoid valve damage while brazing, service valves must be wrapped in a heat-sinking material such as a wet cloth.

Step 7--Make Electrical Connections

Be sure field wiring complies with local and national fire. safety. and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate lbr recommended circuit protection device

NOTE: Operation of unil on bnproper line voltage constitutes abuse and could aft_ct unit reliability. See unit rating plate. Do not install unit in system where voltage or phase imbalance may fluctuate above or below permissible limits,

NOTE=: Use copper wire only between disconnect switch and unit.

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