30hx-7si

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Installation Instructions

CONTENTS

PageSAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-40Step 1 Inspect Shipment . . . . . . . . . . . . . . . . . . . 1Step 2 Rig and Place Unit . . . . . . . . . . . . . . . . . . 1Step 3 Piping Connections . . . . . . . . . . . . . . . . 15 COOLER FLUID, VENT, AND DRAIN BRINE UNITS PREPARATION FOR YEAR-ROUND

OPERATION FILL FLUID LOOP INSULATE COOLER HEADS 30HXA PIPING, VALVE, AND SWITCH

INSTALLATION 30HXC PIPING AND VALVE INSTALLATION INSTALL PRESSURE RELIEF REFRIGERANT

VENT PIPINGStep 4 Make Electrical Connections . . . . . . 21 FIELD POWER CONNECTIONS FIELD CONTROL POWER CONNECTIONS CONDENSER FAN CONTROL FOR

CONDENSER UNITS USED WITH30HXA UNITS

Step 5 Install Accessories . . . . . . . . . . . . . . . 25 ELECTRICAL 30HXA LOW-AMBIENT OPERATION MINIMUM LOAD ACCESSORY MISCELLANEOUS ACCESSORIESStep 6 Leak Test Unit . . . . . . . . . . . . . . . . . . . . 25 30HXC UNITS 30HXA UNITSStep 7 Refrigerant Charge . . . . . . . . . . . . . . . 40 30HXC UNITS 30HXA UNITS

SAFETY CONSIDERATIONS

Installing, starting up, and servicing this equipment canbe hazardous due to system pressures, electrical compo-

nents, and equipment location. Only trained, qualied in-stallers and service mechanics should install, start up, andservice this equipment.

When working on the equipment, observe precautions inthe literature, and on tags, stickers, and labels attached to theequipment.

Follow all safety codes. Wear safety glasses and work gloves. Use care in handling, rigging, and setting bulky

equipment.

IMPORTANT: This equipment generates, uses, and canradiate radio frequency energy. If not installed andused in accordance with these instructions, this equip-ment may cause radio interference. The equipment hasbeen tested and found to comply with the limits of a Class A computing device as dened by the FCC(Federal Communications Commission, U.S.A.) Regu-lations, Subpart J of Part 15, which are designed toprovide reasonable protection against such inter-ference when operated in a commercial environment.

INTRODUCTIONThese instructions cover installation of 30HX liquid chill-

ers with electronic controls and units with factory-installedoptions (FIOPs).

INSTALLATIONStep 1 Inspect Shipment Inspect unit for damage upon arrival. If damage is found, le a claim with theshipping company right away. Do not store units in an areaexposed to weather because of sensitive control mecha-nisms and electronic devices.

Locate unit indoors. When considering unit location, con-sult National Electrical Code (NEC, U.S.A.) and local coderequirements. Allow sufficient space for wiring, piping, and

service. Install unit in an area which will not be exposed tosubfreezing weather. See Fig. 1-8 for clearance details.Allow the following clearances for service access:

Front . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ft (914 mmRear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 ft (914 mmTop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ft (610 mmEnds . . . . . . . . . . . . . . . . tube removal at one (either) end;

3 ft (914 mm) at opposite end.

Be sure surface beneath unit is level and is capable of supporting the operating weight of the unit. See Fig. 9 andTables 1A and 1B for unit mounting and operating weights.If necessary, add supporting structure (steel beams or re-enforced concrete slabs) to oor to transfer weight to nearest

beams.Step 2 Rig and Place Unit

Rig unit from the top heat exchanger only. Rigging fromthe bottom heat exchanger will cause the unit to be liftedunsafely. Personal injury or damage to the unit mayoccur.

Copy continued on page 15.

30HXA,HXC076-271ECOLOGIC Fluid-Cooled and

Condenserless Chillers50/60 Hz

Manufacturer reserves the right to discontinue, or change at any time, specications or designs without notice and without incurring obligations.Book 2Tab 5c

PC 903 Catalog No. 533-004 Printed in U.S.A. Form 30HX-7SI Pg 1 8-99 Replaces: 30HX-4S

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F i g . 1

D i m e n s i o n s , 3 0 H X C 0 7 6 - 1 0 6

U N I T

3 0 H X C

O P E R A T I N G

W E I G H T

l b ( k g )

D I M E N S I O N i n. ( m m )

A

B

C

D

0 7 6

5 7 0 0

( 2 5 8 6 )

4 5 . 8

7

( 1 1 6 5 )

4 5 . 8

7

( 1 1 6 5 )

3 2 . 5

0

( 8 2 6 )

6 5 . 2

2

( 1 6 5 7 )

0 8 6

5 7 2 3

( 2 5 9 7 )

4 5 . 8

7

( 1 1 6 5 )

4 5 . 8

7

( 1 1 6 5 )

3 2 . 5

0

( 8 2 6 )

6 5 . 2

2

( 1 6 5 7 )

0 9 6

5 8 5 5

( 2 6 5 7 )

5 4 . 1

2

( 1 3 7 5 )

3 7 . 6

3

( 9 5 6 )

3 2 . 5

0

( 8 2 6 )

6 5 . 2

2

( 1 6 5 7 )

1 0 6

6 1 7 7

( 2 8 0 3 )

5 4 . 1

2

( 1 3 7 5 )

3 7 . 6

3

( 9 5 6 )

3 3 . 5

0

( 8 5 1 )

6 7 . 2

2

( 1 7 0 7 )

LEGEND

K . O .

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

N O T E S :

1 . O p e r a t i n g w e i g h t i n c l u d e s w e i g h t o f w a t e r a n d r e f r i g e r a n t .

2 .

D e n o t e s c e n t e r o f g r a v i t y

.

3 .

D e n o t e s a c c e s s o r y o r f a c t o r y - i n s t a l l e d o p t i o n .

4 . D i m e n s i o n s a r e i n i n c h e s ( m i l l i m e t e r s ) a n d w e i g h t s a r e i n l b ( k g ) .

5 . R e c o m m e n d e d s e r v i c e c l e a r a n c e a r o u n d m a c h i n e

3 6

( 9 1 4

. 4 ) .

U N I T 3 0 H X C

D I M E N S I O N S

i n . (

m m )

N U M B E R

O F P A S S E S

C O N N E C T I O N

S I Z E S

A

B

0 7 6 , 0 8 6 , 0 9 6

S t d

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

3

4

0 7 6 , 0 8 6 , 0 9 6

M i n u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

2

4

0 7 6 , 0 8 6 , 0 9 6

P l u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

4

4

1 0 6

S t d

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

3

5

1 0 6

M i n u s

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

2

5

1 0 6

P l u s

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

4

5

2

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F i g . 2

D i m e n s i o n s , 3 0 H X C 1 1 6 - 1 4 6

U N I T

3 0 H X C

O P E R A T I N G W E I G H T

l b ( k g )

1 1 6

6 4 1 5

( 2 9 1 1 )

1 2 6

6 4 6 5

( 2 9 3 3 )

1 3 6

6 6 8 8

( 3 0 3 4 )

1 4 6

6 7 1 8

( 3 0 4 8 )

L E G E N D

K . O .

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

N O T E S :


2 .


.

3 .

D e n o t e s

a c c e s s o r y o r f a c t o r y - i n s t a l l e d o p t i o n .



3 6

( 9 1 4

. 4 ) .

U N I T 3 0 H X C

D I M E N S I O N S

i n . (

m m )

N U M B E R

O F P A S S E S

C O N N E C T I O N

S I Z E S

A

B

1 1 6 , 1 2 6 , 1 3 6 , 1 4 6

S t d

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

2

4

1 1 6 , 1 2 6 , 1 3 6 , 1 4 6

M i n u s

0 . 0 0

0 . 0 0

1

4

1 1 6 , 1 2 6 , 1 3 6 , 1 4 6

P l u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

3

4

3

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F i g . 3

D i m e n s i o n s , 3 0 H X C 1 6 1 - 1 8 6

U N I T

3 0 H X C

O P E R A T I N G

W E I G H T

l b ( k g )

D I M E N S I O N S

i n . (

m m )

A

B

1 6 1

7 4 5 2

( 3 3 8 1 )

7 2 . 1

2

( 1 8 3 2 )

5 0 . 6 3 ( 1 2 8 6 )

1 7 1

7 6 6 0

( 3 4 7 5 )

6 1 . 3

7

( 1 5 5 9 )

6 1 . 3 7 ( 1 5 5 9 )

1 8 6

7 8 5 4

( 3 5 6 4 )

6 1 . 3

7

( 1 5 5 9 )

6 1 . 3 7 ( 1 5 5 9 )

LEGEND

K . O .

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

N O T E S :


2 .


.

3 .




3 6

( 9 1 4

. 4 ) .

U N I T 3 0 H X C

D I M E N S I O N S

i n . (

m m

)

N U M B E R O F P A S S E S

C O N N E C T I O N S I Z E S

A

B

1 6 1 , 1 7 1 , 1 8 6

S t d

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

2

5

1 6 1 , 1 7 1 , 1 8 6

M i n u s

0 . 0 0

0 . 0 0

1

5

1 6 1 , 1 7 1 , 1 8 6

P l u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

3

5

4

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F i g . 4

D i m e n s i o n s , 3 0 H X C 2 0 6 - 2 7 1

U N I T

3 0 H X C

O P E R A T I N G

W E I G H T

l b ( k g )

D I M E N S I O N S

i n . (

m m )

A

2 0 6

1 0 , 5

8 1

( 4 7 9 9 )

3 3 . 8

8

( 8 6 0 )

2 4 6

1 0 , 9

6 9

( 4 9 7 6 )

3 4 . 3

8

( 8 7 3 )

2 6 1

1 0 , 9

9 2

( 4 9 8 6 )

3 4 . 3

8

( 8 7 3 )

2 7 1

1 1 , 0

2 9

( 5 0 0 3 )

3 4 . 3

8

( 8 7 3 )

L E G E N D

K . O .

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

N O T E S :

1 . O p e r a t i n g w e i g h t i n c l u d e s w e i g h t o f w a t e r a n d

r e f r i g e r a n t .

2 .


.

3 .

D e n o t e s a c c e s s o r y o r f a c t o r y -

i n s t a l l e d o p t i o n .

4 . D i m e n s i o n s a r e i n i n c h e s ( m i l l i m e t e r s ) a n d

w e i g h t s a r e i n l b ( k g ) .

5 . R e c o m m e n d e d s e r v i c e c l e a r a n c e a r o u n d m a -

c h i n e

3 6

( 9 1 4

. 4 ) .

U N I T 3 0 H X C

D I M E N S I O N S

i n . (

m m )

N U M B E R O F

P A S S E S

C O N N E C T I O N

S I Z E S

A

B

2 0 6 , 2 4 6 , 2 6 1 , 2 7 1

S t d

5 . 5 3 ( 1 4 0 )

5 . 5 3 ( 1 4 0 )

2

6

2 0 6 , 2 4 6 , 2 6 1 , 2 7 1

M i n u s

0 . 0 0

0 . 0 0

1

6

2 0 6 , 2 4 6 , 2 6 1 , 2 7 1

P l u s

5 . 5 3 ( 1 4 0 )

5 . 5 3 ( 1 4 0 )

3

6

5

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G

K

H

J

E

F i g . 5

D i m e n s i o n s , 3 0 H X A 0 7 6 - 1 0 6

U N I T

3 0 H X A

O P E R A T I N G

W E I G H T l b ( k g )

D I M E N S I O N S in. (mm )

A

B

C

D

E

F

G

H

J

K

L

0 7 6

4 7 1 7

( 2 1 4 0 )

8 . 4 8

( 2 1 5 )

4 5 . 8

7

( 1 1 6 5 )

4 5 . 8

7

( 1 1 6 5 )

3 2 . 5

0

( 8 2 6 )

4 3 . 5

0

( 1 1 0 5 )

6 5 . 2

2

( 1 6 5 7 )

1 3 . 9

3

( 3 5 4 )

5 9 . 4

8

( 1 5 1 1 )

5 . 7 2

( 1 4 5 )

4 5 . 8

1

( 1 1 6 4 )

4 6 . 2

5

( 1 1 7 5 )

0 8 6

4 7 4 4

( 2 1 5 2 )

8 . 4 8

( 2 1 5 )

4 5 . 8

7

( 1 1 6 5 )

4 5 . 8

7

( 1 1 6 5 )

3 2 . 5

0

( 8 2 6 )

4 3 . 5

0

( 1 1 0 5 )

6 5 . 2

2

( 1 6 5 7 )

1 3 . 9

3

( 3 5 4 )

5 9 . 4

8

( 1 5 1 1 )

5 . 7 2

( 1 4 5 )

4 5 . 8

1

( 1 1 6 4 )

4 6 . 2

5

( 1 1 7 5 )

0 9 6

4 8 3 5

( 2 1 9 4 )

8 . 4 8

( 2 1 5 )

5 4 . 1

2

( 1 3 7 5 )

3 7 . 6

3

( 9 5 6 )

3 2 . 5

0

( 8 2 6 )

4 3 . 5

0

( 1 1 0 5 )

6 5 . 2

2

( 1 6 5 7 )

2 2 . 1

5

( 5 6 3 )

4 2 . 7

7

( 1 0 8 6 )

5 . 7 2

( 1 4 5 )

5 4 . 0

6

( 1 3 7 3 )

3 8 . 0

0

( 9 6 5 )

1 0 6

5 1 5 1

( 2 3 3 7 )

1 0 . 4

8

( 2 6 6 )

5 4 . 1

2

( 1 3 7 5 )

3 7 . 6

3

( 9 5 6 )

3 3 . 5

0

( 8 5 1 )

4 5 . 5

0

( 1 1 5 6 )

6 7 . 2

2

( 1 7 0 7 )

2 2 . 1

5

( 5 6 3 )

4 2 . 7

7

( 1 0 8 6 )

5 . 8 7

( 1 4 9 )

5 4 . 0

6

( 1 3 7 3 )

3 8 . 0

0

( 9 6 5 )

NOTES


2 .


.

3 .




3 6

( 9 1 4

. 4 ) .

U N I T 3 0 H X A

D I M E N S I O N S

i n . (

m m )

N U M B E R O F

P A S S E S

C O N N E C T I O N

S I Z E S

A

B

0 7 6 , 0 8 6 , 0 9 6

S t d

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

3

4

0 7 6 , 0 8 6 , 0 9 6

M i n u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

2

4

0 7 6 , 0 8 6 , 0 9 6

P l u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

4

4

1 0 6

S t d

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

3

5

1 0 6

M i n u s

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

2

5

1 0 6

P l u s

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

4

5

L E G E N D

K . O .

K n o c k o u t

S A E

S o c i e t y o f A u t o m o t i v e E n g i n e e r s , U . S . A .

T H K

T h i c k n e s s

T Y P

T y p i c a l

6

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F i g . 6

D i m e n s i o n s , 3 0 H X A 1 1 6 - 1 4 6

U N I T

3 0 H X A

O P E R A T I N G

W E I G H T

l b ( k g )

1 1 6

5 1 6 3

( 2 3 4 2 )

1 2 6

5 2 0 5

( 2 3 6 2 )

1 3 6

5 3 0 9

( 2 4 0 8 )

1 4 6

5 3 3 3

( 2 4 2 0 )

L E G E N D

K . O .

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

N O T E S :


2 .


.

3 .




3 6

( 9 1 4

. 4 ) .

U N I T

3 0 H X A

D I M E N S I O N S

i n . (

m m )

N U M B E R O F

P A S S E S

C O N N E C T I O N

S I Z E S

A

B

1 1 6 , 1 2 6 , 1 3 6 , 1 4 6

S t d

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

2

4

1 1 6 , 1 2 6 , 1 3 6 , 1 4 6

M i n u s

0 . 0 0

0 . 0 0

1

4

1 1 6 , 1 2 6 , 1 3 6 , 1 4 6

P l u s

4 . 6 8 ( 1 1 9 )

4 . 6 8 ( 1 1 9 )

3

4

7

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F i g . 7

D i m e n s i o n s , 3 0 H X A 1 6 1 - 1 8 6

U N I T

3 0 H X A

O P E R A T I N G

W E I G H T

l b ( k g )

D I M E N S I O N S in. (mm )

A

B

C

D

E

1 6 1

5 7 5 2 ( 2 6 1 0 )

7 2 . 1

2 ( 1 8 3 2 ) 5 0 . 6 3 ( 1 2 8 6 ) 4 8

. 5 6 ( 1 2 3 3 ) 7 2

. 0 6 ( 1 8 3 0 ) 5 1

. 0 0 ( 1 2 9 5 )

1 7 1

5 7 7 7 ( 2 6 2 1 )

6 1 . 3

7 ( 1 5 5 9 ) 6 1 . 3 7 ( 1 5 5 9 ) 4 3

. 2 5 ( 1 0 9 9 ) 6 1

. 3 1 ( 1 5 7 2 ) 6 1

. 7 5 ( 1 5 6 8 )

1 8 6

5 9 4 6 ( 2 6 9 8 )

6 1 . 3

7 ( 1 5 5 9 ) 6 1 . 3 7 ( 1 5 5 9 ) 4 3

. 2 5 ( 1 0 9 9 ) 6 1

. 3 1 ( 1 5 7 2 ) 6 1

. 7 5 ( 1 5 6 8 )

LEGEND

K . O

.

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

N O

T E S :

1 . O p e r a t i n g w e i g h t i n c l u d e s w e i g h t o f w a -

t e r a n d r e f r i g e r a n t .

2 .


.

3 .

D e n o t e s a c c e s s o r y o r

f a c t o r y - i n s t a l l e d o p t i o n .

4 .

D i m e n s i o n s a r e i n i n c h e s ( m i l l i m e -

t e r s ) a n d w e i g h t s a r e i n l b ( k g ) .

5 .

R e c o m m e n d e d s e r v i c e c l e a r a n c e

a r o u n d m a c h i n e

3 6

( 9 1 4

. 4 ) .

U N I T 3 0 H X A

D I M E N S I O N S

i n . (

m m )

N U M

B E R O F

P A S S E S

C O N N E C T I O N

S I Z E S

A

B

1 6 1 , 1 7 1 , 1 8 6

S t d

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

2

5

1 6 1 , 1 7 1 , 1 8 6

M i n u s

0 . 0 0

0 . 0 0

1

5

1 6 1 , 1 7 1 , 1 8 6

P l u s

5 . 1 4 ( 1 3 1 )

5 . 1 4 ( 1 3 1 )

3

5

8

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U N I T

3 0 H X A

O P E R A T I N

G

W E I G H T l

b ( k g )

2 0 6

7 4 8 5 ( 3 3 9 5 )

2 4 6

7 6 2 1 ( 3 4 5 7 )

2 6 1

7 6 2 1 ( 3 4 5 7 )

2 7 1

7 6 2 1 ( 3 4 5 7 )

L E G E N D

N O T E S :

1 . O p e r a

t i n g w e i g

h t i n c l u d e s w e i g h

t o f w a t e r a n

d

r e f r i g e r a n t .

2 .

D e n o t e s

c e n t e r o f g r a v

i t y .

3 .

D e n o t e s

a c c e s s o r y

o r f a c t o r y -

i n s t a l

l e d o p

t i o n .

4 . D i m e n s i o n s a r e

i n i n c h e s

( m i l l i m e t e r s ) a n

d

w e i g h

t s a r e

i n l b ( k g ) .

5 . R e c o m m e n

d e d

s e r v

i c e

c l e a r a n c e

a r o u n d

m a c

h i n e

3 6

( 9 1 4

. 4 ) .

K . O .

K n o c k o u t

T H K

T h i c k n e s s

T Y P

T y p i c a l

F i g . 8

D i m e n s i o n s ,

3 0 H X A 2 0 6 - 2 7 1

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WEIGHT DISTRIBUTION AT EACH MOUNTING PLATE,

30HXC UNITS lb (kg)

UNIT30HXC

MOUNTING PLATE NO.1 2 3 4 5 6

076 738 (335) 943 (428) 595 (270) 1110 (503) 1418 (643) 896 (406)086 738 (335) 947 (430) 597 (271) 1112 (504) 1427 (647) 902 (409)096 686 (311) 968 (439) 693 (314) 1027 (466) 1447 (656) 1034 (469)106 730 (331) 1028 (466) 744 (337) 1073 (487) 1510 (685) 1092 (495)116 728 (330) 1114 (505) 777 (352) 1053 (478) 1615 (733) 1127 (511)126 738 (335) 1127 (511) 780 (354) 1061 (481) 1628 (738) 1131 (513)136 758 (344) 1176 (533) 811 (368) 1083 (491) 1689 (766) 1171 (531)146 763 (346) 1182 (536) 815 (370) 1085 (492) 1697 (770) 1172 (532)161 817 (371) 1272 (577) 908 (412) 1219 (553) 1890 (857) 1346 (610)171 936 (425) 1318 (598) 840 (381) 1379 (626) 1946 (883) 1241 (563)186 962 (436) 1361 (617) 860 (390) 1410 (640) 1996 (905) 1265 (574)206 948 (430) 2406 (1091) 1243 (564) 1201 (545) 3133 (1421) 1650 (748)246 985 (447) 2515 (1141) 1306 (592) 1154 (523) 3276 (1486) 1733 (786)261 985 (447) 2520 (1143) 1311 (595) 1154 (523) 3283 (1489) 1739 (789)271 985 (447) 2529 (1147) 1318 (598) 1154 (523) 3294 (1494) 1749 (793)

30HXA UNITS lb (kg)

UNIT30HXA

MOUNTING PLATE NO.1 2 3 4 5 6

076 555 (252) 793 (360) 418 (190) 926 (420) 1326 (601) 699 (317)086 555 (252) 798 (362) 418 (190) 928 (421) 1340 (608) 705 (320)096 509 (231) 808 (367) 493 (224) 848 (385) 1350 (612) 827 (375)106 555 (252) 869 (394) 541 (245) 896 (406) 1410 (640) 880 (399)116 530 (240) 895 (406) 540 (245) 855 (388) 1456 (660) 887 (402)126 540 (245) 905 (410) 541 (245) 864 (392) 1468 (666) 887 (402)136 548 (249) 926 (420) 555 (252) 874 (396) 1498 (679) 908 (412)

146 551 (250) 930 (422) 555 (252) 883 (400) 1506 (683) 908 (412)161 560 (254) 965 (438) 598 (271) 954 (433) 1650 (748) 1025 (465)171 627 (284) 968 (439) 534 (242) 1072 (486) 1658 (752) 918 (416)186 648 (294) 1004 (455) 552 (250) 1110 (504) 1703 (772) 939 (426)206 671 (304) 1702 (772) 879 (399) 850 (385) 2216 (1005) 1167 (529)246 681 (309) 1748 (793) 911 (413) 797 (362) 2276 (1032) 1209 (548)261 681 (309) 1748 (793) 911 (413) 797 (362) 2276 (1032) 1209 (548)271 681 (309) 1748 (793) 911 (413) 797 (362) 2276 (1032) 1209 (548)

NOTE: See pages Fig. 1-8 for center of gravity details.

Fig. 9 Weight Distribution at Mounting Plates

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Table 1A Physical Data, English

UNIT SIZE 30HX 076 086 096 106 116 126 136 146UNIT WEIGHT (lb)

Fluid Cooled (HXC) 5700 5723 5855 6177 6415 6465 6688 6718Condenserless (HXA) 4717 4744 4835 5151 5163 5205 5309 5333

COMPRESSORS Semi-Hermetic, Twin ScrewQuantity 2 2 2 2 2 2 2 2Nominal Capacity perCompressor (tons) 39/39 46/39 56/39 66/39 66/46 66/56 80/56 80/66

Economizer No No No No No No No NoNo. Capacity Steps

Standard 6 6 6 6 6 6 6 6Optional (maximum) 8 8 8 8 8 8 8 8

Minimum Step Capacity (%)Standard 20 20 20 20 20 20 20 20Optional 10 10 10 10 10 10 10 10

REFRIGERANT R-134aCharge* (lb) Circuit A/Circuit B 60/60 76/65 94/70 110/70 105/76 112/89 124/89 119/100

COOLER Shell and Tube with Enhanced Copper TubesPart No. 10HX400 001 001 002 010 007 007 006 006Net Fluid Volume (gal) 17.0 17.0 19.0 22.6 21.4 21.4 24.0 24.0Maximum Refrigerant Pressure

(psig) 220 220 220 220 220 220 220 220Maximum Fluid-Side Pressure

(psig) 300 300 300 300 300 300 300 300Fluid Connections

Inlet and Outlet (in.) 4 4 4 5 4 4 4 4Drain (in. NPT) 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7 31.7

30HXA OIL SEPARATORPart No. 09RX400 165 165 166 166 167 167 167 167Maximum Refrigerant Pressure

(psig) 320 320 320 320 320 320 320 320Refrigerant Connections (in.)

Discharge 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8Liquid 11 8 11 8 11 8 11 8 11 8 11 8 11 8 11 8

Relief ValveConnection (in. SAE Flare) 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 8Flow Capacity (lb air/min) 21.6 21.6 21.6 21.6 21.6 21.6 21.6 21.6

CONDENSER (HXC) Shell and Tube with Enhanced Copper TubesPart No. 09RX400 173 173 174 174 175 175 176 176Net Fluid Volume (gal) 16.8 16.8 18.3 18.3 23.9 23.9 27.5 27.5Maximum Refrigerant Pressure

(psig) 220 220 220 220 220 220 220 220Maximum Water-Side Pressure

(psig) 300 300 300 300 300 300 300 300Water Connections (in.)

Inlet and Outlet 5 5 5 5 5 5 5 5

Drain (NPT) 1

2 1

2 1

2 1

2 1

2 1

2 1

2 1

2

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7 31.7

LEGENDNPTF National Pipe Thread FemaleSAE Society of Automotive Engineers*Charges listed are for 30HXC units. The 30HXA units are shipped with a holding charge only.

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Table 1A Physical Data, English (cont)

UNIT SIZE 30HX 161 171 186 206 246 261 271UNIT WEIGHT (lb)

Fluid Cooled (HXC) 7452 7660 7854 10,581 10,969 10,992 11,029Condenserless (HXA) 5752 5777 5946 7,485 7,621 7,621 7,621

COMPRESSORS Semi-Hermetic, Twin ScrewQuantity 2 2 2 3 3 3 3Nominal Capacity perCompressor (tons) 80/56 66/80 80/80 66/39/80 80/56/80 80/66/80 80/80/80

Economizer Yes Yes Yes Yes Yes Yes YesNo. Capacity Steps

Standard 6 6 6 8 8 8 8Optional (maximum) 8 8 8 11 11 11 11

Minimum Step Capacity (%)Standard 20 20 20 13 13 13 13Optional 10 10 10 7 7 7 7

REFRIGERANT R-134aCharge* (lb) Circuit A/Circuit B 150/110 119/140 135/135 220/135 220/135 220/135 220/135

COOLER TYPE Shell and Tube with Enhanced Copper TubesPart No. 10HX400 104 012 013 125 126 126 126Net Fluid Volume (gal) 28.5 28.5 33.4 43.1 47.2 47.2 47.2Maximum Refrigerant Pressure

(psig) 220 220 220 220 220 220 220Maximum Fluid-Side Pressure

(psig) 300 300 300 300 300 300 300Fluid Connections

Inlet and Outlet (in.) 5 5 5 6 6 6 6Drain (NPT) 1 2 1 2 1 2 3 4 3 4 3 4 3 4

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7

30HXA OIL SEPARATORPart No. 09RX400 167 168 168 106 106 106 106Maximum Refrigerant Pressure

(psig) 320 320 320 320 320 320 320Refrigerant Connections (in.)

Discharge 21 8 21 8 21 8 21 8 (2) 2 1 8 (2) 2 1 8 (2) 2 1 8 (2)Liquid 13 8 13 8 13 8 15 8 /13 8 1 5 8 /13 8 1 5 8 /13 8 1 5 8 /13 8

Relief ValveConnection (in. SAE Flare) 5 8 5 8 5 8 5 8 5 8 5 8 5 8Flow Capacity (lb air/min) 21.6 21.6 21.6 21.6 21.6 21.6 21.6

CONDENSER (HXC) Shell and Tube with Enhanced Copper TubesPart No. 09RX400 177 178 178 179 180 180 180Net Fluid Volume (gal) 30.6 37.6 37.6 47.6 55.1 55.1 55.1Maximum Refrigerant Pressure

(psig) 220 220 220 220 220 220 220Maximum Water-Side Pressure

(psig) 300 300 300 300 300 300 300Water Connections (in.)

Inlet and Outlet 5 5 5 6 6 6 6

Drain (NPT) 1

2 1

2 1

2 3

4 3

4 3

4 3

4

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (lb air/min) 31.7 31.7 31.7 31.7 31.7 31.7 31.7

LEGENDNPTF National Pipe Thread FemaleSAE Society of Automotive Engineers*Charges listed are for 30HXC units. The 30HXA units are shipped with a holding charge only.Circuit A/Circuit B.

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Table 1B Physical Data, SI

UNIT SIZE 30HX 076 086 096 106 116 126 136 146UNIT WEIGHT (kg)

Fluid Cooled (HXC) 2586 2597 2657 2803 2911 2933 3034 3048Condenserless (HXA) 2140 2152 2194 2337 2342 2362 2408 2420

COMPRESSORS Semi-Hermetic, Twin ScrewQuantity 2 2 2 2 2 2 2 2Nominal Capacity perCompressor (kW) 137/137 162/137 197/137 232/137 232/137 232/197 281/197 281/232

Economizer No No No No No No No NoNo. Capacity Steps

Standard 6 6 6 6 6 6 6 6Optional (maximum) 8 8 8 8 8 8 8 8

Minimum Step Capacity (%)Standard 20 20 20 20 20 20 20 20Optional 10 10 10 10 10 10 10 10

REFRIGERANT R-134aCharge* (kg) Circuit A/Circuit B 27.3/27.3 34.5/29.5 42.7/31.8 50.0/31.8 47.7/34.5 50.9/40.5 56.4/40.5 54.1/45.5

COOLER Shell and Tube with Enhanced Copper TubesPart No. 10HX400 001 001 002 010 007 007 006 006Net Fluid Volume (L) 64.3 64.3 71.9 85.5 81.0 81.0 90.8 90.8Maximum RefrigerantPressure (kPa) 1517 1517 1517 1517 1517 1517 1517 1517

Maximum Fluid-SidePressure (kPa) 2068 2068 2068 2068 2068 2068 2068 2068

Fluid ConnectionsInlet and Outlet (in.) 4 4 4 5 4 4 4 4Drain (NPT) 1 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (kg air/min) 14.38 14.38 14.38 14.38 14.38 14.38 14.38 14.38

30HXA OIL SEPARATORPart No. 09RX400 165 165 166 166 166 167 167 167Maximum RefrigerantPressure (kPa) 2205 2205 2205 2205 2205 2205 2205 2205

Refrigerant Connections (in.)Discharge 21 8 21 8 21 8 21 8 21 8 21 8 21 8 21 8Liquid 11 8 11 8 11 8 11 8 11 8 11 8 11 8 11 8

Relief ValveConnection (in. SAE Flare) 5 8 5 8 5 8 5 8 5 8 5 8 5 8 5 8Flow Capacity (kg air/min) 9.80 9.80 9.80 9.80 9.80 9.80 9.80 9.80

CONDENSER (HXC) Shell and Tube with Enhanced Copper TubesPart No. 09RX400 173 173 174 174 175 175 176 176Net Fluid Volume (L) 63.6 63.6 69.3 69.3 90.5 90.5 104.1 104.1Maximum RefrigerantPressure (kPa) 1517 1517 1517 1517 1517 1517 1517 1517

Maximum Water-SidePressure (kPa) 2068 2068 2068 2068 2068 2068 2068 2068

Water Connections (in.)Inlet and Outlet 5 5 5 5 5 5 5 5

Drain (NPT) 1

2 1

2 1

2 1

2 1

2 1

2 1

2 1

2

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (kg air/min) 14.38 14.38 14.38 14.38 14.38 14.38 14.38 14.38

LEGENDNPTF National Pipe Thread FemaleSAE Society of Automotive Engineers*Charges listed are for 30HXC units. The 30HXA units are shipped with a holding charge only.

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Table 1B Physical Data, SI (cont)

UNIT SIZE 30HX 161 171 186 206 246 261 271UNIT WEIGHT (kg)

Fluid Cooled (HXC) 3381 3475 3564 4799 4976 4986 5003Condenserless (HXA) 2610 2621 2698 3395 3457 3457 3457

COMPRESSORS Semi-Hermetic, Twin ScrewQuantity 2 2 2 3 3 3 3Nominal Capacity perCompressor (kW) 281/197 232/281 281/281 232/137/281 281/197/281 281/232/281 281/281/281

Economizer Yes Yes Yes Yes Yes Yes YesNo. Capacity Steps

Standard 6 6 6 8 8 8 8Optional (maximum) 8 8 8 11 11 11 11

Minimum Step Capacity (%)Standard 20 20 20 13 13 13 13Optional 10 10 10 7 7 7 7

REFRIGERANT R-134aCharge* (kg) Circuit A/Circuit B 68.2/50.0 54.1/63.6 61.2/61.2 99.8/61.2 99.8/61.2 99.8/61.2 99.8/61.2

COOLER Shell and Tube with Enhanced Copper TubesPart No. 10HX400 104 012 013 125 126 126 126Net Fluid Volume (L) 107.9 107.9 126.4 163.2 178.7 178.8 178.7Maximum RefrigerantPressure (kPa) 1517 1517 1517 1517 1517 1517 1517

Maximum Fluid-SidePressure (kPa) 2068 2068 2068 2068 2068 2068 2068

Fluid ConnectionsInlet and Outlet (in.) 5 5 5 6 6 6 6Drain (NPT) 1 2 1 2 1 2 3 4 3 4 3 4 3 4

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (kg air/min) 14.28 14.38 14.38 14.38 14.38 14.38 14.38

30HXA OIL SEPARATORPart No. 09RX400 167 168 168 106 106 106 106Maximum RefrigerantPressure (kPa) 2205 2205 2205 2205 2205 2205 2205

Refrigerant Connections (in.)Discharge 21 8 21 8 21 8 21 8 (2) 2 1 8 (2) 2 1 8 (2) 2 1 8 (2)Liquid 13 8 13 8 13 8 15 8 /13 8 1 5 8 /13 8 1 5 8 /13 8 1 5 8 /13 8

Relief ValveConnection (in. SAE Flare) 5 8 5 8 5 8 5 8 5 8 5 8 5 8Flow Capacity (kg air/min) 9.80 9.80 9.80 9.80 9.80 9.80 9.80

CONDENSER (HXC) Shell and Tube with Enhanced Copper TubesPart No. 09RX400 177 178 178 179 180 180 180Net Fluid Volume (L) 115.8 142.3 142.3 177.9 208.6 208.6 208.6Maximum RefrigerantPressure (kPa) 1517 1517 1517 1517 1517 1517 1517

Maximum Water-SidePressure (kPa) 2068 2068 2068 2068 2068 2068 2068

Water Connections (in.)Inlet and Outlet 5 5 5 6 6 6 6

Drain (NPT) 1

2 1

2 1

2 3

4 3

4 3

4 3

4

Relief ValveConnection (in. NPTF) 3 4 3 4 3 4 3 4 3 4 3 4 3 4Flow Capacity (kg air/min) 14.38 14.38 14.38 14.38 14.38 14.38 14.38

LEGENDNPTF National Pipe Thread FemaleSAE Society of Automotive Engineers*Charges listed are for 30HXC units. The 30HXA units are shipped with a holding charge only.Cricuit A/Circuit B.

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Do not remove unit from skid until unit is in its nallocation. Rig from the rigging holes provided in the topheat exchanger. See Fig. 1-9 for rigging and center of grav-ity information. Lower the unit carefully onto the oor orroller. Push or pull only on the skid, not the unit. If the unitis moved on rollers, use a minimum of 3 evenly-spacedrollers.

IMPORTANT: Some of the unit skids are larger thanstandard door openings. Be sure that the path to theunits nal destination is wide enough to accom-modate unit shipping skid. Remove the skid if neces-sary. If skid is removed and rollers are used, attachrollers to unit tube sheets while moving unit.

Areas where unit mounting points will be located must belevel to within 1/16 in. per ft (5 mm per m) along the longaxis of the unit. Once unit is in place and level, bolt unit tothe oor. Use isolation pads under the unit to aid in vibrationisolation as required.

Step 3 Piping Connections See Fig. 10 and11 for typical piping applications.

COOLER FLUID, VENT, AND DRAIN The inlet (re-turn) uid connection is always the lower of the 2 coolerconnections. See Fig. 10 for locations. A screen strainer with

a minimum of 20 mesh should be installed ahead of the coolerinlet to prevent debris from damaging internal tubes of thecooler. Outlet (supply) uid connection is the upper connec-tion of the 2 cooler connections.

The cooler has weld anges to connect the eld-suppliedpiping. Plan the piping arrangement in accordance with goodpiping practices and so that the piping does not cross in frontof the cooler head. Use exible connections on cooler pip-ing to reduce vibration transmission. Offset the piping to per-mit removal of the cooler head for maintenance. Install pipehangers where needed. Make sure no weight or stress is placedon the water nozzle.

To install cooler piping:1. Remove bolts on weld anges, and remove anges from

cooler uid heads.

Remove the weld anges before welding piping tothe anges. Refer to Fig. 1-8 for weld ange loca-tions. Failure to remove the anges may damage thetemperature sensors.

2. To keep debris from entering the heat exchanger duringshipping and storage, the gaskets between the weld flangesand the uid heads are solid sheets that block off theuid connections. Remove bolts on weld anges, and re-move the perforated gasket material blocking the con-nections manually, or if necessary, use a sharp knife tocarefully cut along the perforations to remove the excessgasket material.

IMPORTANT: Be sure to remove anges and cutholes in the gaskets between the anges and the fluidheads as indicated.

3. Apply a thin coat of oil to both sides of each gasket tohelp ensure a good seal, and reattach each gasket to eachuid head.

4. Using appropriate precautions to avoid warping or de-forming the weld anges, weld the eld-supplied pipingto the anges.

5. Bolt the weld anges back onto their respective uid heads.

IMPORTANT: When bolting the weld ange to theuid heads, be sure to locate the anges so that theholes in each ange are completely aligned with theholes in each uid head. If installed incorrectly, partof the holes in the uid head will be blocked off.This will result in impaired uid ow and high pres-sure drop.

Tighten all cooler head bolts to 250 ft-lb (339 N-m)before lling system with water (or brine).

6. Install eld-supplied differential ow switches in the coolerpiping for protection against loss of ow. The differentialow switches must be installed on top of the pipe in ahorizontal run and should be at least 5 pipe diameters fromany bend. Install the low-pressure differential ow switchinto the outlet piping, and install the high-pressure dif-ferential ow switch into the inlet line piping as shownin Fig. 12.

IMPORTANT: Loss of ow protection is requiredfor all 30HX chillers.

7. Provide openings in uid piping for pressure gages andthermometers (if used). These openings should be 5 to 10pipe diameters from the unit water nozzles. For thoroughmixing and temperature stabilization, wells in the leav-ing uid pipe should extend at least 2 in. (50 mm) intothe pipe.

Accessory Victaulic-type connections are available. Fol-low the connection directions provided with the accessory.

Although cooler has an air vent, it is recommended that aeld-supplied air vent be installed in the system to facilitateservicing. Field-supplied shut-off and balancing valves shouldalso be installed to facilitate servicing and ow balancing.

Locate valves in return and supply uid lines as close tothe chiller as possible. Locate air vent at highest point of thecooler uid system. See Fig. 10.

Provide drain connections at all low points to permit com-plete drainage of the system.

BRINE UNITS Special factory modications to the unitsare required to allow them to operate at uid temperaturesless than 34 F (1.1 C). Be sure that the uid has sufficientinhibited ethylene glycol or other suitable corrosion-resistant antifreeze solution to prevent cooler freeze up.

PREPARATION FOR YEAR-ROUND OPERATION Inareas where the piping or unit is exposed to 32 F (0 C) orlower ambient temperatures, freeze-up protection is rec-ommended using inhibited ethylene glycol or other suitable

corrosion-resistant antifreeze solutionand electric heater tapes.Heater tapes should have a rating for area ambient tempera-tures and be covered with a suitable thickness of closed-cellinsulation. Route power for the heater tapes from a sepa-rately fused disconnect. Mount the disconnect within sightfrom the unit per local or NEC codes. Identify disconnect asheater tape power source with warning that power must notbe turned off except when servicing unit.

FILLFLUID LOOP Fill the uid loop with water (or brine)and a corrosion-resistant inhibitor suitable for the water of the area. Consult the local water authority for characteristicsof area water and a recommended inhibitor for the cooleruid loop.

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L E G E N D

F i e l d W i r i n g

F i e l d P i p i n g

NOTES

1 . W i r i n g a n d p i p i n g s h o w n a r e f o r g e n e r a l p o i n t - o f - c o n n e c t i o n o n l y a n d a r e n o t

i n t e n d e d t o s h o w d e t a i l s f o r s p e c i c i n s t a l l a t i o n . C e r t i e d e l d w i r i n g a n d d i m e n -

s i o n a l d i a g r a m s a r e a v a i l a b l e u p o n r e q u e s t . T

h e 3 0 H X A a n d H X C u n i t s s h o u l d b e

i n s t a l l e d u s i n g c e r t i e d d r a w i n g s .

2 . A l l w i r i n g m u s t c o m p l y w i t h a p p l i c a b l e c o d e s .

3 . R e f e r t o C a r r i e r S y s t e m D e s i g n M a n u a l f o r d e t a i l s r e g a r d i n g p i p i n g t e c h n i q u e s .

4 . P i p i n g , w

i r i n g , s

w i t c h e s , v a l v e s , v

e n t , g a g e s , s t r a i n e r s , d r a i n , a n d v i b r a t i o n i s o l a -

t i o n a r e a l l e l d s u p p l i e d .

5 . W a t e r c o n n e c t i o n s a r e s h o w n o n l e f t s i d e o f c o n t r o l b o x i n t h i s g u r e . A c t u a l c o n -

n e c t i o n s a r e o n r i g h t s i d e o f c o n t r o l b o x . F i g

. 1 0

T y p i c a l C o o l e r ( 3 0 H X A

, H X C ) a n d C o n d e n s e r ( 3 0 H X C O n l y ) P i p i n g a n d W i r i n g

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COMPRESSOR

LIQUID LINEANGLE VALVE

RELIEF VALVES

(IF REQUIRED BYCODE)

MECHANICAL ROOM

DISCHARGELINES

LIQUID LINES

OILSEPARATOR

COOLER*

LIQUID LINESOLENOID VALVES(IF REQUIRED)

DOUBLE RISER(IF REQUIRED)

CONDENSER

ACCESSORY SOUND ENCLOSURE

NOTES:1. Piping shown is for general point-of-connection only and is not intended to show

details for a specific installation. Certified field wiring and dimensional drawingsare available upon request. The 30HXA units should be installed using certifieddrawings.

2. Refer to Carrier System Design Manual for details regarding piping techniques.3. Piping and pressure relief devices are field supplied.4. Vent pipes properly per local codes.

Fig. 11 Typical 30HXA Refrigerant Piping to Remote Condenser

*See Fig. 10 for typical cooler piping.

Fig. 12 Differential Flow Switch

LEGENDCOM CommonN.O. Normally Open

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A drain connection is located at the bottom of the coolerhead. See Fig. 1-8 for connection location. Install shut-off valves to the drain line before filling the system with fluid.

INSULATE COOLER HEADS Once the cooler waterlines and drain and vent lines have been installed and checkedfor leaks, insulate the cooler heads with a suitable thickness of closed-cell insulation. This will minimize the amount of con-densation that forms on the cooler heads. When insulating thecooler heads, allow for service access and removal of heads.

30HXA PIPING, VALVE, AND SWITCHINSTALLATIONRelieve Pressure and Recover Refrigerant The 30HXAunits are shipped from the factory with a holding charge of R-134a. Before opening the refrigerant system, relieve systempressure and recover system refrigerant through the chargingvalve on the cooler.30HXA Refrigerant Piping (See Fig. 11) When running

the refrigerant piping from the 30HXA unit to the remote con-denser(s), avoid excessive pressure drops. Minimizing line pressure drop is critical to the proper operation of the unit expansion device . The pressure drop using R-134a refrigerant isdifferent than when using R-22 refrigerant. See Tables 2 and 3for an example for a 2 F (1.1 C) pressure drop in saturated tem-perature in the discharge (hot gas) line and liquid line, respec-tively. Refer to Fig. 13 and 14 for line sizing information forthe discharge and liquid lines for 30HXA (R-134a) units.

Table 2 Discharge Line 2 F (1.1 C) Drop inSaturated Temperature Example

Table 3 Liquid Line 2 F (1.1 C) Drop inSaturated Temperature Example

Discharge lines should be looped above the compressors toprevent charge from flowing back to the oil separator and com-pressor during unit shutdown. The discharge line must bebrazed to the back-pressure valve located on the top of the oilseparator. The valve cap that is brazed to the back-pressurevalve at the factory must be removed prior to brazing the dis-charge line. Be sure to wrap back-pressure valve when brazingdischarge line to avoid damaging the valve.

30HXA Low-Ambient Considerations In installationswhere outdoor ambient temperatures may be below 34 F(1.1 C), it is recommended that inhibited ethylene glycol orother suitable corrosion-resistant antifreeze solution be used inthe cooler loop to prevent cooler freeze-up.

If valves are installed in the liquid lines, it is recommendedthat field-supplied pressure relief valves be installed in eachliquid line and the pressure setting should be 320 psig(2205 kPa). Most local codes require that the relief valves bevented directly outdoors. The vent must not be smaller than therelief valve outlet.Fan-Cycling Pressure Switches In order to provide properhead-pressure control in 30HXA units, install fan-cycling pres-sure switches in each circuit in the liquid line between the sepa-rate condenser unit and expansion device. The switches areshipped from the factory with the 30HXA units. Refer to theCarrier 09DK condenser installation literature for details on thelocation and installation of the switches. Since the 30HXA isan HFC-134a unit, switch selection is based on R-134a refrig-erant pressures.NOTES: The switches that are standard with the Carrier 09DKcondensers are designed for R-22 operation and must not be used. Instead use the switches shipped with the chiller(Part No. HK02YB097). Switches open at 97 psig ( 10 psi),and close at 185 psig ( 10 psi).

Back-Pressure Valve, 30HXA Units The 30HXA back-pressure valves are supplied with an integral mounting flange.The valves mount on the 30HXA oil separator. This eliminatesunnecessary brazing when installing the discharge piping, andallows the installer to orient the valve in any desired manner.

Complete the steps below to install the flanged back-pressure valves on the 30HXA chiller before running discharge

piping. Follow these steps for both refrigerant circuits.1. Be sure to remove nitrogen charge or properly recover

refrigerant charge before removing the blank-off plate.Remove the blank-off plate from the mating flange ontop of the coil separator by removing the screws fromthe flange. See Fig. 15 for location.

2. Using the screws that were removed in Step 1, bolt theflanged back-pressure valve to the mating flange ontop of the coil separator. An O-ring is included in thebox with the back-pressure valve for sealing theflange.The valve may be oriented in any desired position in tomake discharge piping easier. Install pipe hangerswhere needed. Make sure no weight or stress is placedon the back-pressure valve.

IMPORTANT: Before starting the unit, be sure all of theair has been purged from the system.

IMPORTANT: Before starting the unit, be sure all of theair has been purged from the system.

SATURATEDDISCHARGE

TEMP

PRESSURE

R-134a R-22

F C Psig kPa Psig kPA126 52.2 187.5 1293 281.6 1942124 51.1 182.0 1255 274.3 1891 PRESSURE 5.5 38 7.3 51

SATURATEDLIQUIDTEMP

PRESSURE

R-134a R-22

F C Psig kPa Psig kPA100 37.7 124.3 857 195.9 1351

98 36.7 120.1 828 190.2 1311 PRESSURE 4.2 29 5.7 40

IMPORTANT: The back-pressure valves are not mounted to the 30HXA chiller at the factory. They arepackaged and supplied attached to the unit shippingskid. These valves must be installed at the time of chillerinstallation. Failure to install the back-pressure valveswill result in improper unit operation.

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3. Once the back-pressure valve has been mounted to themating ange, and the piping is properly supported, a eld-supplied 1 4 -in. (6.4 mm) copper line must be run fromthe 1 4 -in. NPT port on the back-pressure valve cap to the1 4 -in. SAE are tting on the motor cooling line. Theequalizer line must be installed in order for the unit tofunction properly.NOTE: A ball valve can be installed in the equalizer lineto facilitate servicing.

4. After mounting the back-pressure valve to the unit, prop-erly supporting it, and running the 1 4 -in. equalizer line,the discharge piping may be installed.

5. Repeat Steps 1-4 for the other refrigerant circuit.Evacuation and Dehydration Because the 30HXAsystems use polyolester oil, which can absorb moisture, itis important to minimize the amount of time that the sys-tem interior is left exposed to the atmosphere. Minimizingthe exposure time of the oil to the atmosphere will mini-mize the amount of moisture that needs to be removed dur-ing evacuation.

Once all of the piping connections are complete, leak test the unit and then pull a deep dehydration vacuum. Con-nect the vacuum pump to the charging valve at the bottomof the oil separator and to the liquid line service valve. Forbest results, it is recommended that a vacuum of at least500 microns (0.5 mm Hg) be obtained. Afterwards, to

ensure that no moisture is present in the system, perform astanding vacuum-rise test.With the unit in deep vacuum (500 microns or less), iso-

late the vacuum pump from the system. Observe the rate-of-rise of the vacuum in the system. If the vacuum rises bymore than 50 microns in a 30-minute time period, thencontinue the dehydration process. Maintain a vacuum on thesystem until the standing vacuum requirement is met. Thiswill ensure a dry system.

By following these evacuation and dehydration pro-cedures, the amount of moisture present in the system willbe minimized, and the factory-supplied lter driers willprovide adequate moisture protection. If additional moistureprotection is desired, additional lter-driers may be installedin the liquid lines between the condenser(s) and expansiondevices. Be sure to consider the pressure drop of the lterdrier when determining piping requirements.

For further 30HXA piping instructions, proceed to the sec-tion titled Install Pressure Relief Refrigerant Vent Piping,page 21.

30HXC PIPING AND VALVE INSTALLATION30HXC Condenser Connections The inlet uid connec-tion is always the lower of the 2 condenser connections.It is recommended that a screen strainer with a minimum of 20 mesh be installed ahead of the condenser inlet to preventdebris from damaging the internal condenser tubes.

The outlet water connection is the upper connection of the 2 connections. The condenser has weld couplings to con-

nect eld-supplied piping. Plan the piping arrangement inaccordance with good piping practices and so that the pipingdoes not cross in front of the condenser head. Use exibleconnections on the condenser piping to reduce vibration trans-mission. Offset the piping to permit condenser head removalfor maintenance purposes. Install pipe hangers where needed.Make sure no weight or stress is placed on the water nozzle.

To install condenser piping:1. Remove bolts on weld anges, and remove anges from

condenser water heads.

Remove the weld anges before welding piping tothe anges. Refer to Fig. 1-8 for weld ange loca-tions. Failure to remove the anges may cause dam-age to the unit.

2. To keep debris from entering the heat exchanger duringshipping and storage, the gaskets between the weld flangesand the uid heads are solid sheets that block off the uidconnections. Remove the perforated gasket material block-ing the connections manually, or if necessary, use a sharp

knife to carefully cut along the perforations to removethe excess gasket material.

IMPORTANT: Be sure to remove anges and cutholes in the gaskets between the anges and the wa-ter heads as indicated.

3. Apply a thin coat of oil to both sides of each gasket tohelp ensure a good seal, and reattach each gasket to eachwater head.

4. Weld the eld-supplied piping to the weld anges.

NOTE: Use appropriate precautions when welding to avoidwarping or deforming the weld anges.

5. Bolt the weld anges back onto their respective water heads.

IMPORTANT: When bolting the weld anges to theuid heads, be sure to locate the anges so that theholes in the anges are completely aligned with theholes in the uid heads. If anges are installed in-correctly, parts of the holes in the uid head can beblocked off. This will result in impaired uid owin high pressure drop applications.

Tighten all condenser head bolts to 250 ft-lb (339 N-m)before lling system with water (or brine).

Provide openings in water piping for pressure gagesand thermometers (if used). These openings should be 5 to10 pipe diameters from the unit water nozzles. For thoroughmixing and temperature stabilization, wells in the leavingwater pipe should extend at least 2 in. (50 mm) into the pipe.

Accessory Victaulic-type connections and condenserwater thermistors are available. Follow the connectiondirections as provided with the accessory. If accessory dif-ferential pressure switch, water ow switch, or condenserwater thermistor is to be installed, install the proper ttingsinto the condenser water lines before water is connected.

Although condenser has an air vent, it is recommendedthat a eld-supplied air vent be installed in the system tofacilitate servicing.Field-supplied shut-off and balancingvalvesshould also be installed to facilitate servicing and ow bal-ancing. Locate valves in inlet and outlet lines as close to thechiller as possible. Locate air vents at the highest point of the system loop. See Fig. 10.

Provide drain connections at all low points in the loop topermit complete system drainage.

IMPORTANT: Before starting the unit, be sure all of the air has been purged from the system.

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50

00

15.2

30.4

45.7

100

150

61.0

76.2

91.4

106.7 350

300

250

200

152.4

137.2

121.9 400

450

500

E Q U I V A L E N T L I N E L E N G T H ( M )

E Q U I V A L E N T L I N E L E N G T H ( F T )

1 5 / 8 " ( 4 1 .3 m m ) 1 3 / 8 " ( 3 4 .9 m m ) 1 1 / 8 " ( 2 8 .6 m m )

105 141 176 211 246

30 40 50 60 70 80 90 100 110 120

280 316 352 387 422

TONS COOLING

kW COOLING457 492 527 562 598

130 140 150 160 170 180 190 200

633 668 703

NOTES:1. Values are for a 2F pressure drop at 125 F (51.7 C)

saturated discharge temperature, and 105 F (40.6 C)liquid refrigerant temperature.

2. Size each circuit separately.Fig. 13 R-134a Liquid Line Sizing, 30HXA Units

0

15.2

30.4

45.7

61.0

0

150

100

50

200

76.2

91.4

106.7

121.9 400

350

300

250

152.4

137.2

500

450

E Q U I V A L E N T L I N E L E N G T H ( M )

E Q U I V A L E N T L I N E L E N G T H ( F T )

30 40 50 60 70 80 90

105 141 176 211 246 281 316

100 110 120 130 140 150

352 387 422 457 492 527

TONS COOLING

kW COOLING

160 170 180 190 200

562 598 633 668 703

3 1 / 8 " ( 7 9 .4 ) m m )

2 5 / 8 " ( 6 6 .7 m m ) 2 1 / 8 " ( 5 4 .0 m m )

NOTES:1. Values are for a 2F pressure drop at 125 F (51.7 C)

saturated discharge temperature, and 105 F (40.6 C)liquid refrigerant temperature.

2. Size each circuit separately.Fig. 14 R-134a Discharge Line Sizing, 30HXA Units

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30HXC Condenser Temperature Regulating Valve Forinstallations where entering condensing water temperaturecould be below 70 F (21.1 C), a eld-supplied leaving watertemperature regulating valve is required. Operation below70 F (21.1 C) without this valve may cause the unit to shutdown on low oil pressure alarms.NOTE: This valve should be a temperature-controlled valve(DO NOT USE a pressure-controlled valve) which controlsto 80 F (26.7 C) leaving water temperature. A valve that canbe controlled by a 4 to 20 mA signal is also supported by theproduct integrated control (PIC) options module. Figure 16shows the installation details for the regulating valve.

IMPORTANT: A separate, eld-supplied power sup-ply must be used with the 4 to 20 mA valve. Failureto use a separate power supply may result in damageto the chiller processor module (PSIO).

IMPORTANT: On brine applications where leavingcooler water is less than 34 F (1.1 C), a minimumwater ow of 0.75 gpm/ton (0.14 L/s per kW) shouldbe maintained at all times.

INSTALL PRESSURE RELIEF REFRIGERANT VENTPIPING The low side relief valves on all units are pro-vided with 3 4 -in. female NPT connections, and are locatedon top of the cooler shell. See Fig. 1-8. There are 2 relief valves for the cooler; one on each circuit. Make the ventconnection to the low side relief valve by installing a maleNPT to copper OD braze adapter. Braze a 90 degree short-radius elbow to the adapter. This will allow enough space tomake vent connections to the elbow.

The 30HXA high side relief valves are provided with a5 8 -in. SAE (Society of Automotive Engineers, U.S.A.) areconnection. The 30HXC high side relief valves are providedwith a 1 4 -in. female NPT are connection, and are locatedon the bottom of the condenser shell.

There are 2 relief valves for the oil separator (30HXA)or condenser (30HXC); one for each circuit. Most local codesrequire that these devices be piped to the outside. If vent

piping is required by local codes, these connections have beenprovided to aid in the connection of vent piping inaccordance with ASHRAE 15 (American Society of Heat-ing, Refrigeration, and Air Conditioning Engineers), SafetyCode for Mechanical Refrigeration. If vent piping isrequired, do not restrict the vent ow in any way.

NOTE: When accessory suction service valve kit is in-stalled, there are 2 additional high-side pressure relief valves.These are located on the discharge line between the muferand the discharge shut-off valve. Pipe these valves per localcodes.

Step 4 Make Electrical Connections Th

electrical characteristics of the available power supply mustagree with the unit nameplate rating. Supply voltage mustbe within the limits shown.

FIELD POWER CONNECTIONS (See Fig. 17 and 18) All power wiring must comply with applicable local and na-tional codes. Install eld-supplied, branch circuit fused dis-connect(s) of a type that can be locked off or open. Discon-nect(s) must be located within sight and readily accessiblefrom the unit in compliance with NEC Article 440-14. SeeTables 4A and 4B for unit electrical data. See Tables 5A and5B for compressor electrical data.

IMPORTANT: The 30HX units have a factory-installedoptionavailablefora non-fused disconnect forunit powersupply. If the unit is equipped with this option, all eld

power wiring should be made to the non-fused dis-connect since no terminal blocks are supplied.

All units have a single location for power entry to sim-plify the eld power wiring. Maximum wire size that theunit terminal block or non-fused disconnect will accept is500 kcmil.

All units require at least one eld-supplied power supply.Refer to Fig. 17 and 18 for a list of units that require 2 eld-supplied power supplies. Units that require 2 power suppliesare listed under TB1B in the Standard Power and Non-Fused Disconnect Option sections of Fig. 17 and 18.

Copy continued on page 25.

Fig. 15 Field-Supplied 1 4 -in. (6.4 mm) Copper Tube, 30HXA Units

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TEMPERATURE CONTROLLED VALVE (PENN VALVE)

TEMPERATURE CONTROLLED VALVE

4 TO 20 mA WATER REGULATING VALVE(SEPARATE FIELD-SUPPLIED POWER SUPPLY REQUIRED)

Fig. 16 Condenser Temperature Regulating Valve Installation

30HXC CONDENSER

INLET

OUTLET

SENSOR

30HXC CONDENSER

OUTLET

INLET

SENSOR

BYPASS VALVE

INLET

OUTLET

CHILLER CONTROL PANEL

30HXC CONDENSER

OPTIONAL BYPASS VALVE FOR NORMAL DUTY.BYPASS VALVE REQUIRED FOR BRINEAPPLICATIONS TO PREVENT CONDENSER FREEZE-UP.

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N O T E S :

1 . F a c t o r y w i r i n g i s i n a c c o r d a n c e w i t h N a t i o n a l E l e c t r i c a l C o d e ( N E C ) . F i e l d m o d i c a t i o n s o r a d d i t i o n s m u s t b e

i n c o m p l i a n c e w i t h a l l a p p l i c a b l e c o d e s .

2 . W i r i n g f o r m a i n e l d s u p p l y m u s t b e r a t e d 7 5 C m i n i m u m

. U s e c o p p e r f o r a l l u n i t s

. M a x i m u m i n c o m i n g w i r e

s i z e f o r e a c h t e r m i n a l b l o c k i s 5 0 0 k c m i l .

3 . P o w e r f o r c o n t r o l c i r c u i t s h o u l d b e s u p p l i e d f r o m a s e p a r a t e s o u r c e ( e x c e p t 3 8 0 / 4 1 5 v u n i t s ) t h r o u g h a e l d -

s u p p l i e d d i s c o n n e c t w i t h 1 5 a m p m a x i m u m p r o t e c t i o n f o r 1 1 5 v o l t c o n t r o l c i r c u i t s a n d 1 5 a m p m a x i m u m p r o -

t e c t i o n f o r 2 3 0 v o l t c o n t r o l c i r c u i t . C o n n e c t c o n t r o l c i r c u i t p o w e r t o t e r m i n a l s 1 a n d 2 o f T B 4 . C o n t r o l c i r c u i t

c o n d u c t o r s f o r a l l u n i t s m u s t b e c o p p e r o n l y . C o n t r o l c i r c u i t p o w e r i s f a c t o r y w i r e d f o r 3 8 0 / 4 1 5 v u n i t s

.

4 . T e r m i n a l s 1 3 a n d 1 4 o f T B 2 a r e f o r e l d e x t e r n a l c o n n e c t i o n f o r r e m o t e O N - O

F F . T

h e c o n t a c t s m u s t b e r a t e d

f o r d r y c i r c u i t a p p l i c a t i o n c a p a b l e o f h a n d l i n g a 2 4 v a c t o 5 0 m A l o a d . R

e m o v e j u m p e r b e t w e e n 1 3 a n d 1 4 o f

T B 2 i f r e m o t e O N - O

F F i s i n s t a l l e d .

5 . T e r m i n a l s 1 1 a n d 1 2 o f T B 2 a r e f o r c h i l l e d w a t e r o w s w i t c h ( C W F S ) a n d c h i l l e d w a t e r p u m p i n t e r l o c k ( C W P I )

f u n c t i o n s . T

h e c o n t a c t s m u s t b e r a t e d f o r d r y c i r c u i t a p p l i c a t i o n c a p a b l e o f h a n d l i n g a 2 4 v a c t o 5 0 m A l o a d .

6 . T e r m i n a l s 4 a n d 5 o f T B 2 a r e f o r c o n t r o l o f c h i l l e d w a t e r p u m p s t a r t e r . T h e m a x i m u m l o a d a l l o w e d f o r t h e c h i l l e d

w a t e r p u m p r e l a y i s 1 2 5 v a s e a l e d , 1

2 5 0 v a i n r u s h a t 1 1 5

o r 2 3 0 v o l t .

7 . T e r m i n a l s 2 a n d 3 o f T B 2 a r e f o r a l a r m . T

h e m a x i m u m l o a d a l l o w e d f o r t h e a l a r m i s 1 2 5 v a s e a l e d , 1

2 5 0 v a

i n r u s h a t 1 1 5 o r 2 3 0 v o l t .

8 . T e r m i n a l 6 o f T B 2 i s f o r c o n d e n s e r w a t e r p u m p ( H X C o n l y ) o r c i r c u i t B c o n d e n s e r f a n c o n t a c t o r ( H X A o n l y ) .

T e r m i n a l 1 o f T B 2 i s f o r c i r c u i t A c o n d e n s e r f a n c o n t a c t o r ( H X A o n l y ) . T h e m a x i m u m l o a d a l l o w e d i s 1 2 5 v a

s e a l e d , 1

2 5 0 v a i n r u s h a t 1 1 5 o r 2 3 0 v o l t . I n s t a l l C D W P o r C D F C - B

b e t w e e n T B 2 - 6 a n d T B 4 - 2 ( u n i t c o n t r o l

p o w e r n e u t r a l ) . I n s t a l l C D F C - A

b e t w e e n T B 2 - 1 a n d T B 4 - 2 ( u n i t c o n t r o l p o w e r n e u t r a l ) . S e p a r a t e e l d p o w e r

s u p p l y i s n o t r e q u i r e d .

9 . T e r m i n a l s J 7 - 2

5 a n d J 7 - 3

2 o f P S I O 2 a r e f o r c o n d e n s e r o w s w i t c h ( C D F S ) . T h e c o n t a c t s m u s t b e r a t e d f o r d r y

c i r c u i t a p p l i c a t i o n c a p a b l e o f h a n d l i n g a 2 4 v a c t o 5 0 m A l o a d . S

e p a r a t e e l d p o w e r s u p p l y i s r e q u i r e d .

F i g . 1 7

F i e l d W i r i n g , 3 0 H X A

, C 0 7 6 - 1 8 6

L E G E N D

A L M

A l a r m

C A - 1

M

C o m p r e s s o r A 1 , 1 M C o n t a c t o r

C B - 1

M

C o m p r e s s o r B 1

, 1 M C o n t a c t o r

C C N

C a r r i e r C o m f o r t N e t w o r k

C D F C

C o n d e n s e r F a n C o n t a c t o r

C D F S

C o n d e n s e r F l o w S w i t c h

C D W P

C o n d e n s e r W a t e r P u m p

C W F S

C h i l l e d W a t e r F l o w S w i t c h

C W P

C h i l l e d W a t e r P u m p

C W P I

C h i l l e d W a t e r P u m p I n t e r l o c k

L L S V

L i q u i d L i n e S o l e n o i d V a l v e

N E C

N a t i o n a l E l e c t r i c a l C o d e

T B

T e r m i n a l B l o c k

F i e l d P o w e r W i r i n g

F i e l d C o n t r o l W i r i n g

F a c t o r y I n s t a l l e d W i r i n g

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N O T E S :

1 . F a c t o r y w i r i n g i s i n a c c o r d a n c e w i t h N a t i o n a l E l e c t r i c a l C o d e ( N E C ) . F i e l d m o d i c a t i o n s o r a d d i t i o n s m u s t b e

i n c o m p l i a n c e w i t h a l l a p p l i c a b l e c o d e s .

2 . W i r i n g f o r m a i n e l d s u p p l y m u s t b e r a t e d 7 5 C m i n i m u m

. U s e c o p p e r f o r a l l u n i t s

. M a x i m u m i n c o m i n g w i r e

s i z e f o r e a c h t e r m i n a l b l o c k i s 5 0 0 k c m i l .

3 . P o w e r f o r c o n t r o l c i r c u i t s h o u l d b e s u p p l i e d f r o m a s e p a r a t e s o u r c e ( e x c e p t 3 8 0 / 4 1 5 v u n i t s ) t h r o u g h a e l d -

s u p p l i e d d i s c o n n e c t w i t h 1 5 a m p m a x i m u m p r o t e c t i o n f o r 1 1 5 v o l t c o n t r o l c i r c u i t s a n d 1 5 a m p m a x i m u m p r o -

t e c t i o n f o r 2 3 0 v o l t c o n t r o

30hx-7si

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