Carrier CRNEMAFX001A00, CRNEMAFX002A00, CRNEMAFX003A00 Installation Instructions Manual

Page 1

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

PC 111 Catalog No. 534-734 Printed in U.S.A. Form 48/50-51SI Pg 1 4-99 Replaces: New

Book111444 Tab 1a1b5a5a6a6b

Installation Instructions

Part Numbers: CRNEMAFX001A00, CRNEMAFX002A00,

CRNEMAFX003A00

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance functions such as changing bulbs. All other operations should be performed by trained service personnel. When working on airconditioning equipment, observe precautions in the literature, tags and labels attached to the unit or accessory , and other safety precautions that may apply.

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

GENERAL

Carrier’s commercial rooftop ultra-violet germicidal lamps are designed to kill odor causing mold and fungus that may develop in the wet evaporator section of an HVAC unit. The high output, low temperature germicidal lamps are installed in the evaporator section of the HVAC unit, and are pointed directly at the evaporator coil and condensate pan. The short wave length ultra-violet band light inhibits and kills mold, fungus, and microbial growth.

The Carrier germicidal lamps have been specifically designed and optimized for 40 to 45 F , high-humidity operation in a moving airstream inside an HVAC unit. The Carrier germicidal lamps have output ratings at 45 F in a 400 fpm airflow of 120 microwatts/cm

at a 1 meter range.

PACKAGE USAGE

Before installing accessory or performing maintenance or service on accessory, turn off main power switch to unit. Electrical shock can cause injury or death. There may be more than one disconnect switch.

Never expose eyes or skin to ultra-violet light from any source. After installation, provide an interlock to turn off germicidal lamps when access door is opened. Lamp must be off before entering HVAC unit to per form maintenance or service. Personal injury may result.

Use only specified high-output, low temperature bulbs with this accessory. Use of a lower wattage or incorrect bulb can result in damage to accessory or bulb. Correct bulbs have a blue end cap.

Do not touch emitter glass without gloves. Damage to bulb may result. Oil from fingerprints will permanently etch glass of bulb and weaken structure. Clean bulb after handling.

Bulb contains a small quantity of mercury. If a bulb breaks, clean and dispose with care.

UNIT ELECTRICAL CHARACTERISTICS PART NUMBER

48/50HJ004-014,48/50TJ004-014 50HJQ004-012

208/230 V, 70-85 W, 50/60 Hz CRNEMAFX002A00

48/50EJ,EK,EW,EY024-068 48/50HJ015-025, 50HJQ014,016, 48/50TJ016-028

115 V, 70-85 W, 50/60 Hz CRNEMAFX001A00

208/230 V, 70-85 W, 50/60 Hz CRNEMAFX002A00

277 V, 70-85 W, 50/60 Hz CRNEMAFX003A00

Accessory Ultra-Violet Germicidal Lamps

Single Package Rooftop Units

50/60 Hz

Page 2

INSTALLATION

Location —

Germicidal lamps are installed in the evaporator section where they will have contact with the air stream and moist surfaces. Refer to the installation locations provided in Fig. 1-4. The stainless steel power supply section of the accessory is installed on the outside of the unit and is waterproof. See Fig. 5 for accessory dimensions.

Make sure site can be supplied with the necessary power re-

quirements. Ensure that there is adequate clearance for service.

Installation (48/50HJ,TJ015-028 Units and 50HJQ014, 016 Units) —

Perform the following proce-

dure to install the germicida l lamp:

1. Turn off all power to unit.

2. Install reflective material (field-supplied) in installation location if desired. Reflecting ultra-violet light energy is recommended to enhance performance and reduce shadows. Lining the installation area with aluminum or aluminum foil allows light energy to reflect instead of being absorbed, increasing the effectiveness of the germicidal lamp.

3. Ultra violet light may damage certain plastics and exposed non-UVC (Ultra Violet Radiation, C-Band) protected wires. (Drain pans will not be damaged.) Wrap exposed plastic and wiring with aluminum tape or use metal conduit.

4. Mount field-provided light-switch disconnect switch on unit hood. See Fig. 1, 6, and 7. Disconnect switch should have a waterproof housing.

5. A separate source power supply must be routed to the accessory germicidal lamp’s unit mounted disconnect switch per applicable codes. Unit wiring and control box connections should not be used. Refer to the Package Usage table for electrical characteristics of power supply. Power source must be a suitable fused, grounded, protected source with the correct voltage. Other voltages will permanently damage the germicidal lamp.

Wire per Table 1.

Table 1 — Wiring Recommendations

6. Any hinged potential access panel or d oor to th e installation area must be interlocked with the accessory power source to turn the lamp off if the door is opened. Access doors should be labelled with appropriate warnings about exposure to ultra-violet light.

A pushbutton door in terl ock swi tch (Carri er Part No. HR54ZA101) is required on all hinged access panels. Use a field-fabricated and -installed bracket to mount the door interlock switch to the unit corner post. See Fig. 6 and 8. Use insulated sleeve terminals for connection to interlock switch. The pushbutton door interlock switch is not required on non-hinged access panels. Door interlock switch should be located on the side of the access door that opens. Locate the switch near the top of the door so it will not be in a location where it interferes with maintenance or service.

Run wiring into disconnect switch. Door interlock switch should be wired into the power (Black) lead, between the disconnect switch and the germicidal lamp, to break power to the accessory when the door is opened.

7. Access doors may be equipped with a glass or Lexan

window to view lamps. A glass or Lexan window will not pass ultra-violet

rays and is not a safety risk.

8. Using the accessory as a template, mark two 1-in. insertion holes on the mounting surface. Mark 8 holes for accessory mounting. See Fig. 1 and 5 for location. The 1-in. holes are used for electrical connections and the germicidal bulb. See Fig. 5.

WIRING COLOR

Power

Black

Neutral

White

Ground

Green

BULB

1.50

UVC DISCONNECT SWITCH

36.00

ECONOMIZER HOOD

TYP

5.00

30.00 TYP

UNIT TOP COVER

TYPICAL INDOOR FAN SECTION (TOP VIEW)

STRAIN RELIEF BUSHING REQ.

7/8" HOLE

7/8" HOLE (REQUIRED FOR CONDUIT ONLY)

BULB

Fig. 1 — Germicidal Lamps Installation Location — 48/50HJ,TJ015-028 and 50HJQ014 and 016 Units

NOTES:

1. Dimensions are in inches.

2. Dimensions are from outside edges.

3. Wiring is shown with ROMEX cable. If conduit is used, two holes in bracket are used.

Page 3

BULB

5.00 TYP.

38.50 TYP.

34.00

16.50

LOCATION OF FIRST BULB (SEE NOTE #2)

NOTE:

1. Unless otherwise specified all dimensions are to outside of part.

2. On size 038-048 units, use 4 bulbs spaced at 34.00''. On size 054-068 units, use 5 bulbs spaced at 34.00''.

3. Dimensions are in inches.

Fig. 2 — Germicidal Lamps Installation Location — 48/50EJ,EK,EW,EY Units

(Size 024-034 Shown)

NOTE: Dimensions are in inches.

Fig. 3 — Germicidal Lamps Installation Location — 48/50HJ,TJ004-007 and 50HJQ004-007 Units

Page 4

9. Drill 1-in. holes in unit where marked.

Fig. 4 — Germicidal Lamps Installation Location — 48/50HJ,TJ008-014 and 50HJQ008-012 Units

NOTE: Dimensions are in inches.

Fig. 5 — Accessory Dimensions

NOTE: Dimensions are in inches.

Page 5

10. Use field-supplied no. 10 self-drilling screws to attach accessory to unit.

NOTE: Holes can be drilled in unit if self-drilling screws are not used. Drill 8 holes for eight no. 10 screws used to attach accessory to unit. Using eight no. 10 screws, attach accessory to unit.

Be sure accessory has a watertight seal against unit wall. Use standard 1/2-in. strain relief connectors when running wiring through any hole in unit.

Repeat for all accessory germicidal lamps.

11. Wire accessory germicidal lamp to disconnect switch. See Table 1 for wiring recommendations. Use UVC resistant wire, outdoor duty, 14-gage ROMEX cable or 1/2-in. conduit for all wiring. Wire power, neutral, and ground leads to disconnect switch. Do not ground to unit. See Fig. 9.

Route wiring away from indoor fan motor and coil su rfaces. Strain relief bushings are required when routing wire through panels. A 7/8-in. diameter hole is required in top coil support bracket to route wiring to disconnect switch. The 7/8-in. diameter hole may be factory-drilled depending on when the unit was produced. Field-drilling of hole may be req uired.

When using ROMEX cable, accessories can be wired in series. When using conduit, accessories cannot be wired in series due to size of conduit, and an additional 7/8-in. diameter hole is required in top coil support bracket for routing of conduit from both accessories. See Fig. 6.

When connecting to terminals in accessory germicidal lamp, strip end of wire 3/8-in. and push wire into terminal. Ultra-violet lamps should be operated continu-

ously from power source. Lamps should not be connected to indoor fan power source or any power source where they would be cycled more than twice per day.

NOTE: If door interlock switch is used, black power lead will be connected to the door interlock switch wiring (not to the disconnect switch) .

12. Locate the germicidal bulb. DO NOT TOUCH GLASS ON BULB. Grasp the bulb only by the base (non-glass part). Clean the bulb using a lint free wipe and isopropyl alcohol. Make sure O-ring on bulb is toward the accessory and push into the 1-in. hole until seated. Hold the bulb in place and lock into place by installing the spring wire fastener to the lances on the bulb.

13. Push on the power plug. Do not force. Rotate 90 degrees if necessary.

14. Affix the ultra-violet light warning label to th e ou tside of the unit, in plain sight, on all access doors. Replace label when worn. See Fig. 10.

15. Test all circuits and return power to unit. Accessory bulb should glow with a blue hue. If bulb cannot be seen briefly back out bulb and view from safe distance. Replace bulb when done. If bulb does not glow, check wiring, safety interlock, or replace bulb.

Installation (48/50EJ,EK,EW,EY Units) —

Perform the

following procedure to install the germicidal lamp:

1. Turn off all power to unit.

2. Install reflective material (field-supplied) in installation location if desired. Reflecting ultra-violet light energy is recommended to enhance performance and reduce shadows. Lining the inst allation area with aluminum or aluminum foil allows light energy to reflect instead of being absorbed, increasing the effectiveness of the germicidal lamp.

Be careful not to drill into coil, refrigerant lines, or other objects inside the HVAC unit. Damage to unit can result.

Fig. 6 — Disconnect Switch and Interlock Switch Installation —

48/50HJ,TJ015-028 Units and 50HJQ014 and 016 Units

NOTE: Dimensions are in inches.

Page 6

UVC ACCESSORY

OUTDOOR AIR HOOD

UVC DISCONNECT SWITCH

10-12"

1.25

3.67

0.25

1.62

2.00

5.16

2.38

FLAT PATTERN

0.25

1.62

0.30

0.50

Fig. 7 — Disconnect Location —

48/50HJ,TJ015-028 Units and 50HJQ014 and 016 Units

Fig. 8 — Field-Fabricated Bracket for Door Interlock Switch —

48/50HJ,TJ015-028 Units and 50HJQ014 and 016 Units

NOTE:

1. Unless otherwise specified all dimensions are to outside of part.

2. Dimensions are in inches.

Page 7

3. Ultra violet light may damage certain plastics and exposed non-UVC protected wires. (Drain pans will not be damaged.) Wrap exposed plastic and wiring with aluminum tape or use metal conduit.

4. Mount field-provided light-switch disconnect switch on unit. See Fig. 11 for location. Disconnect switch should have a waterproof housing.

Wire per Table 1.

6. Any hinged potential access panel or door to the installation area must be interlocked with the accessory power source to turn the lamp off if the door is opened. Access doors should be labelled with appropriate warnings about exposure to ultra-violet light.

A pushbutton door interlock switch (Carrier Part No. HR54ZA101) is required on all hinged access panels. Use a field-fabricated and -installed bracket to mount the door interlock switch. See Fig. 8. Use insulated sleeve terminals for connection to interlock switch. The pushbutton door interlock switch is not required on non-hinged access panels. Door interlock switch should be located on the side of the access door that opens. Locate the switch near the top of the door so it will not be in a location where it interferes with maintenance or service.

Run wiring into disconnect switch. Door interlock switch should be wired into the power (Black) lead, between the disconnect switch and the junction box (installed in Step 10), to break power to the accessory when the door is opened.

7. Access doors may be equipped with a glass or Lexan

window to view lamps. A glass or Lexan window will not pass ultra-violet rays and is not a safety risk.

8. Using the accessory as a template, mark two 1-in. insertion holes on the mounting surface. Mark 8 holes for accessory mounting. See Fig. 2 for location. The 1-in. holes are used for electrical connections and the germicidal bulb. See Fig. 5.

9. Drill 1-in. holes where marked.

10. Use field-supplied no. 10 self-drilling s crews to attach accessory to unit.

NOTE: Holes can be drilled in unit if self-drilling screws are not used. Drill 8 holes for eight no. 10 screws used to attach accessory to unit. Using eight no. 10 screws, attach accessory to unit.

Be sure accessory has a watertight seal against unit wall. Use standard 1/2-in. strain relief connectors when running wiring through any hole in unit.

Be careful not to drill into coil, refrigerant lines, or other objects inside the HVAC unit. Damage to unit can result.

UVC EXPOSURE HAZARD

RISQUE D'EXPOSITION AUX UVC

Turn off power to UVC lights before servicing or repairing.

Never expose unprotected eyes or skin to the UVC light.

This unit contains high energy ultraviolet C-band (UVC) germicidal lamps which can cause serious temporary eye and skin irritation.

Couper l'alimentation des lampes UVC avant l'entretien ou les reparations.

Cet appareil contient des lampes germicides haute energie a ultra-violets de bande C (UVC), qui peuvent causer l'irritation momentanee grave des yeux et de la peau.

Ne jamais exposer les yeux ou la peau non proteges a la lumiere UVC.

CU000135

WARNING

AVERTISSEMENT

Fig. 10 — Warning Label

TO DISCONNECT

SWITCH OR

JUNCTION

BOX

BLK

WHT

GRN

Fig. 9 — Accessory Wiring

Page 8

Repeat for all accessory germicidal lamps. There may be 3, 4, or 5 lamps required.

Install a standard 4 x 4 junction box in the unit near the disconnect switch. Wire the disconnect switch to the junction box. Conn ect power (black), neu tral (white), and ground (green) wiring.

NOTE: If door interlock switch is used, power (black) lead will be connected to the door interlock switch.

11. Wire all accessory germicidal lamps to junction box. See Fig. 9 and 12. See Table 1 for wiring recommen dations. Use UVC resistant wire, o utdoor duty, 14-gage ROMEX cable or 1/2-in. conduit for all wirin g. Wire power, neutral, and ground leads to disconnect switch. Do not ground to unit. Wh en connecting to terminals in accessory germicidal lamp, strip end of wire 3/8-in. and push wire into terminal. Ultra-violet lamps sh ould be operated continuously from power source. Lamps should not be connected to indoor fan power source or any power source where they would be cycled more than twice per day.

12. Locate the germicidal bulb. DO NOT TOUCH GLASS ON BULB. Grasp the bulb only by the base (non-glass part). Clean the bulb using a lint free wip e and isopropyl alcohol. Make sure O-ring on bulb is toward the accessory and push into the 1-in. hole until seated. Hold the bulb in place and lock into place by installing the spring wire fastener to the lances on th e bulb.

13. Push on the power plug. Do not force. Rotate 90 degrees if necessary.

14. Affix the ultra-violet light warning l abel to th e outsid e of the unit, in plain sight, on all access doors. Replace label when worn. See Fig. 10.

15. Test all circuits and return power to unit. Accessory bulb should glow with a blue hue. If bulb cannot be seen briefly back out b ulb and vi ew from s afe dis tance. replace bulb when done. If bulb does not glow, check wiring, safety interlock, or replace bulb.

Installation (48/50HJ,TJ004-014 Units and 50HJQ004-012 Units) —

Perform the following proce-

dure to install the germicidal l amp:

1. Turn off all power to unit.

2. Install reflective material (field-supplied) in installation location if desired. Reflecting ultra-violet light energy is recommended to enhance performance and reduce shadows. Lining the installatio n area with aluminum or aluminum foil allows light energy to reflect instead of being absorbed, increasing the effectiveness of the germicidal lamp.

3. Ultra violet light may damage certain plastics and exposed non-UVC protected wires. (Drain pans will not be damaged.) Wrap exposed plastic and wiring with aluminum tape or use metal conduit.

4. Mount field-provided light-switch disconnect switch on unit. Disconnect switch should have a waterproof housing.

Size 004-007 Units:

A field-supplied bracket is required to mount the lightswitch disconnect on size 004-007 units. Perform the following procedure to install the disconnect switch:

a. Remove two screws from unit top cover flange,

located above accessory installation location. Save screws.

b. Fabricate disconnect mounting switch bracket. See

Fig. 13 for bracket dimensions and details.

c. Drill hole in sid e panel of unit for disconnect wir-

ing. See Fig. 14 f or hole dimensions.

Be careful not to drill into coil, refrigerant lines, or other objects inside the HVAC unit. Damage to unit can result.

5.25

16.00

UVC DISCONNECT BOX

024-034 UNIT SHOWN

NOTES:

1. Unless otherwise specified all dimensions are to outside of part.

2. Dimensions are in inches.

Fig. 11 — Disconnect Switch Location — 48/50EJ,EK,EW,EY Units

Page 9

d. Attach field-supplied disconnect switch and field-

supplied 4-in. length of ROMEX cable to the mounting bracket.

e. Slip flange of mounting bracket under top cover

flange, between top cover and side of unit. Line up holes in mounting bracket with screw holes in unit.

f. With screws removed in Step a, attach mounting

bracket to unit.

g. Connect ROMEX cable to unit. Seal penetration

with RTV sealant to prevent rain water from being drawn into the unit.

Size 008-014 Units:

A mounting bracket is not required. Disco nnect switch mounts directly onto the unit. See Fig. 15 and 16 for location of disconnect switch on size 008-014 units.

Drill 0.875-in. hole in side of unit for wiring to disconnect switch. See Fig. 16 for wiring hole location. Match up wiring hole in disconnect switch with wiring hole drilled into side of un it. Mount disco nnect switch to unit with 4 self-tapping screws (field-provided). Seal disconnect switch housing with RTV sealant to prevent rain water from being drawn into the unit.

Wire per Table 1.

6. Any hinged potential access panel or door to the installation area must be interlocked with the accessory power source to turn the lamp off if the door is opened. Access doors should be labelled with appropriate warnings about exposure to ultra-violet light.

0.406-in. hole in unit z-flange 1.75-in. from end of door for pushbutton of interlock switch. Push button will go through unit z-flang e and will b e contacted by door. See Fig. 15.

Use insulated sleeve terminals for connectio n to interlock switch. The pushbutton door interlock switch is not required on non-hinged access panels. Door interlock switch should be located on the side of the access door that opens. Locate the switch near the top of the door so it will not be in a location where it interferes with maintenance or service.

7. Using the accessory as a template, mark two 1-in. insertion holes on the mounting surface. Mark 8 holes for accessory mounting. See Fig. 3 and 4 for location. The 1-in. holes are used for electrical connections and the germicidal bulb. See Fig. 5.

8. Drill 1-in. holes in unit where marked.

9. Use field-supplied No. 10 self-drilling screws to attach accessory to unit.

NOTE: Holes can be drilled in unit if self-drilling screws are not used. Drill 8 holes for eight no. 10 screws used to attach accessory to unit. Using eight no. 10 screws provided, attach accessory to unit.

Be sure accessory has a watertight seal against unit wall. Use standard 1/2-in. strain relief connectors when running wiring through any hole in unit.

10. Wire accessory germicidal lamp to disconnect switch. See Table 1 for wiring recommendations. Use UVC resistant wire, outdoor duty, 14-gage ROMEX cable or 1/2-in. conduit for all wiring. Wire power, neutral, and ground leads to disconnect switch. Do not ground to unit. Ultra-violet lamps should be operated continuously from power source. Lamps should not be connected to indoor fan po wer source or any power source where they would be cycled more than twice per day.

Be careful not to drill into coil, refrigerant lines, or other objects inside the HVAC unit. Damage to unit can result.

Fig. 12 — Junction Box Installation — 48/50EJ,EK,EW,EY Units (48EJ024 Shown)

Page 10

NOTE: If door interlock switch is used, black po wer lead will be connected to the door interlock switch wiring (not to the disconnect switch).

11. Locate the germicidal bulb. DO NOT TOUCH GLASS ON BULB. Grasp the bulb only by the base (non-glass part). Clean the bulb using a lint free wip e and isopropyl alcohol. Make sure O-ring on bulb is toward the accessory and push into the 1-in. hole until seated. Hold the bulb in place and lock into place by installing the spring wire fastener to the lances on th e bulb.

12. Push on the power plug. Do not force. Rotate 90 degrees if necessary.

13. Affix the ultra-violet light warning l abel to th e outsid e of the unit, in plain sight, on all access doors. Replace label when worn. See Fig. 10.

14. Test all circuits and return power to unit. Accessory bulb should glow with a blue hue. If bulb cannot be seen briefly back out b ulb and vi ew from s afe dis tance. replace bulb when done. If bulb does not glow, check wiring, safety interlock, or replace bulb.

MAINTENANCE

Disconnect all power before performing any maintenance

or service.

Bulbs need periodic replacement to maintain design specifications. Replace bulbs after 6000 hours of operation or 1 year, whichever comes first. For best performance, repl ace bulbs at the beginning of each cooling season.

Bulb output can also be checked with a UVC radiometer. Replace bulb when output falls to 70% of initial reading

The following bulbs can safely be used with this accessory:

• CRSGLTUB001A00 (16-in. tube)

• CRSGLTUB002A00 (20-in. tube)

• CRSGLTUB003A00 (24-in. tube)

• CRSGLTUB004A00 (30-in. tube)

• CRSGLTUB005A00 (36-in. tube) Other bulbs may plug into the accessory, but they should not

be used. Non-approved bulbs will overheat bulb and power source. Normal operation temperature for the bulb is 80 F . Normal operation temperature for the power source is 125 F.

OPERATION

While lit, bulb color should be light blue. If bulb color

changes to red or flickers, replace the bulb. Bulbs that are not light blue will not emit ultra-violet radiation and will not kill harmful bacteria or fungi.

Fiberglass filter media are recommended for operation of

HVAC when filters are exposed to ultra-violet lamps. Polyester or cotton filters are subject to ultra-violet degradation and are not recommended.

Use only specified high-output, low temperature bulbs with this accessory. Use of a lower wattage or incorrect bulb can result in damage to accessory or bulb. Correct bulbs have a blue end cap.

7.0

6.1

3.5

.25.59

2.875

.25

.31 2 PLACES

2.32

.32

ROUND SHARP CORNERS 2 PLACES

2.37

.875

1.46

ROUND SHARP CORNERS 2 PLACES

.25 4 PLACES

18 GA GALVANIZED STEEL OR EQUIVALENT

Fig. 13 — Disconnect Switch Field-Fabricated Mounting Bracket

(48/50HJ,TJ004-007 and 50HJQ004-007 Units Only)

NOTE: Dimensions are in inches.

Page 11

.22"

.17"

3.25

0.5"

.53"

1.125"

FRONT VIEW

0.875"

1.09

1.45"

SIDE VIEW

GERMICIDAL LAMP

TO POWER SUPPLY

Z-FLANGE

DOOR INTERLOCK SWITCH

RAIN PROOF LIGHT SWITCH DISCONNECT

1.75"

Fig. 14 — Disconnect Wiring Hole Location

(48/50HJ,TJ004-007 and 50HJQ004-007 Units Only)

Fig. 15 — Typical Germicidal Lamp Installation —

48/50HJ,TJ008-014 and

50HJQ008-012 Units Shown

Fig. 16 — Disconnect Switch Wiring Hole Location

(48/50HJ,TJ008-014 and 50HJQ008-012 Units Only)

NOTE: Dimensions are in inches.

NOTES:

1. Use 18 gage galvanized steel.

2. Dimensions are in inches.

Fig. 17 — Field-Fabricated Door Interlock Switch Bracket Details

(48/50HJ,TJ004-014 and 50HJQ004-012 Units Only)

Fig. 18 — Interlock Switch Installation

(48/50HJ,TJ004-014 and 50HJQ004-012 Units)

NOTE: Dimensions are in inches.

Page 12

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

PC 111 Catalog No. 534-734 Printed in U.S.A. Form 48/50-51SI Pg 12 4-99 Replaces: New

Book111444 Tab 1a1b5a5a6a6b