Carrier 30HH User Manual

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30HH,HJ

Carrier r-

Installation and

Maintenance Instructions

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HERMETIC RECIPROCATING

LiaUIO CHILLING PACKAGE

Carrier Corporation 1964	Tab	IS
	LItbo m L’«S.A.	12-62

Carrier

INSTALLATION

CONTENTS
	PAGE
STALLATION SECTION
Dimension Drawings	3-5
Preliminary Survey	6
Moving and Placing Unit	6-7
Unit Specifications	7-10
Compressor Physical Data	7
Condenser Physical Data	8
Cooler Physical Data	9
Refrigerant Circuits	10
Refrigerant Charge	10
Compressor Mounting	10
Condenser Water Piping	11-13
Cooler Water Piping	14
Refrigerant Piping	15-16
Leak Testing	17
Dehydrate the System	17-18
Start-up Procedures	18-20
Charge with Refrigerant	20-21
Oil Charge	21
Check the Controls	21-23
Starters and Overloads	23
Circuit Breakers	23-24
Water Regulating Valve	24
Temperature Controller Adjustment	24-26
Wiring Diagrams	27-32
Electrical Data	33-34
Capacity Controls	34-35
Sequence of Operation	35-36
Moisture and Liquid Indicator	37
AINTENANCE SECTION
Condenser Maintenance	38-39
Trouble Diagnosis Chart	40-42
Compressor Maintenance	42
Cause and Prevention of Freeze-up	42

INSTALLATION 30HH,HJ

NOTES;

1.CONDENSER AND ATTACHED PIPING AS SHOWN ARE FOR 30HH MODEL ONLY.

2.REMOVABLE PANELS FURNISHED ON UN IT AS FOLLOWS'. ONE PANEL EACH SIDE, PANELS FRONT AND BACK OF COOLER SECTION, PANELS OVER FRONT OF COMPR., STEP CONT

AND CONTROL CENTER SECTIONS.

3.SIDE PANELS PROVIDED WITH HOLES FOR CHILLED WATER PIPING.

. TWO HOLES PROVIDED IN REAR PANEL OF CONTROL BOX FOR CONTROL AND AUXILIARY WIRE ACCESS.

CONTROL BULB OF TEMPERATURE CONTROLLER TO BE FIELD INSTALLED IN INLET CHILLED WATER LINE.

STANDARD CON T ROL VOLTAGE IS 230 VOLTS FOR 208, 230 aAOOVOLT UNITS FOR 460 a 575 VOLT UNITS STANDARD CONTROL VOLTAGE IS 115 VOLTS.

LEFT SiDE VIEW

FRONT VIEW

Fig. 1 - 30HH,HJ015 Dimensiona! Data

NOTES;

I.CONDENSER AND ATTACHED PIPING AS SHOWN ARE FOR 30HH MODEL ONLY.

2 REMOVABLE PANELS FURN ISHED ON UNIT AS FOLLOWSlONE

PANEL EACH SI DE, PANELS FRONT AND BACK OF COOLER

. TWO HOLES PROVIDED IN REAR PANEL OF CONTROL BOX FOR CONTROL AND AUXILIARY WIRE ACCESS.

. CONTROL BULB OF TEMPERATURE CONTROLLER TO BE FIELD INSTALLED IN INLET CHILLED WATER LINE.

I.I

LEFT SIDE VIEW

FRONT VIEW

Fig. 2 - 30HH,HJ020 Dimensional Data

30HH,HJ INSTALLATION Carrier

SEE NOTE !

2”FPT WATER OUTLET -

CONDENSERS FOR 30HH030 -------------------

CONDENSERS FOR 30HH025

I 2 FPT WATER

INLET—-.,

I2 FPT WATER

OUTLET—

FPT WATER

INLET

NOTES;

I CONDENSER ANDATTACHED PIPING AS SHOWN ARE FOR 30 HH MODEL ONLY.

2.REMOVABLE PANELS FURNfSHEO ON UNITAS FOLLOWS. ONE PANEL EACHSIDE, PANELS FRONT AND BACK OF COOLER SECTION, PANELS OVER FRONTOF COM PR., STEP CONT AND CONTROL CENTER SECTIONS.

SIDE PANELS PROVIDED WITH HOLES FOR CHILLED

WATER PIPING.,,,

COND.

CONDENSER

(SEE NOTE I )

V..y V

CONTROL

BOX

CIRCUIT

BREAKERS' y •

COMPR. OVERLOAD

RESET BUTTON -

MPT WATER

INLET

4 TWO HOLES PROVIDED IN REAR PANEL OF CONTROL BOX FOR CONTROL AND AUXILIARY WIRE ACCESS.

5.CONTROLSULB OF TEMPERATURE CONTROLLER TO BE FIELD INSTALLED IN INLET CHILLEDWATER LINE.

6.STANDARD CONTROL VOLTAGE IS23OV0LTS F0R208. 230 9 400V0LT UNITS. FOR 460 S 575 VOLT UNITS STANDARD CONTROL VOLTAGE IS 115 VOLTS.

STEP CONTROLLER

DISCH CONN.iHJ ONLY)

HJ025- I OD

HJ030IffOD____________

SAFETY	THERMOSTAT
RESET BUTTON

2 DIA. HOLE ELECTRIC CONN.

IDE VIEW

FRONT VIEW

Fig. 3 - 30HH,HJ025,030 Dimensional Data

NOTES:

1CONDENSER AND ATTACHED PIPING AS SHOWN ARE FOR 30HH MODEL ONLY.

2REMOVABLE PANELS FURNISHED ON UNIT AS FOLLOWS: ONE PANEL EACH SIDE, PANELS FRONT AND BACKOF COOLER SECTION, PANELS OVER FRONT OF COMPR, STEP CONT. AND CONTROL CENTER SECTIONS.

3SIDE PANELS PROVIDED WITH HOLES FOR CHILLED WATER PIPING.

TWO HOLES PROVIDED IN REAR PANEL OF CONTROL BOX FOR CONTROL AND AUXILIARY WIRE ACCESS.

. CONTROL BULB OF TEMPERATURE CONTROLLER TO

BE FIELD INSTALLED IN INLET CHILLED WATER LINE.

STANDARD CONTROL VOLTAGE IS 230 VOLTS FOR 208,230 5 400 VOLT UNITS FOR 460 5 575 VOLT UNITS STANDARD CONTROL VOLTAGE IS 115 VOLTS.

h 5''— 2 ^

I' o.D. LIQUID LINE

Fig, 4 - 30HH,HJ045 Dimensional Data

Carrier INSTALLATION 30HH,HJ

N O T E S:

1.CONDENSER AND ATTACHED PIPING AS SHOWN ARE FOR 30HH MODEL ONLY.

2.REMOVABLE PANELS FURNISHED ON UNIT AS FOLLOWS. ONE PANEL EACH SIDE, PANELS FRONT AND BACK OF COOLER SECTION, PANELS OVER FRONT OF COMPR., STEP CONT. AND CONTROL CENTER SECTIONS.

3.SIDE PANELS PROVIDED WITH HOLES FOR CHILLED WATER PIPING.

Fig. 5 - 30HH055 Dimensional Data

4.TWO HOLES PROVIDED IN REAR PANEL OF CONTROL BOX FOR CONTROL AND AUXILIARY WIRE ACCESS

5.CONTROL BULB OF TEMPERATURE CONTROLLER TO BE FIELD INSTALLED IN INLET CHILLED WATER LINE.

6.STANDARD CONTROL VOLTAGE IS 230 VOLTS FOR 208, 230 8 400 VOLT UNITS FOR 460 8575 VOLT UNITS STANDARD CONTROL VOLTAGE IS 115 VOLTS.

-3’’DIA.H0LE FOR ELECTRICAL CONN LOCATED IN REAR OF CIRCUIT BREAKER CABINET

Fig. 6 - 30HH,HJ055 Dimensional Data

30HH,HJ INSTALLATION

PRELIMINARY SURVEY

Before	installation is		started, a	survey	should
be made to		establish	the procedures and		ma­
terials	required	by	installation	personnel.	See
cover picture for typical unit.

Storage

Because of the sensitive control mechanisms and electrical devices incorporated in the 30HH,HJ units, they should not be exposed to the weather.

Location

Always

locate the

unit

indoors.

In

order

to

pre­

vent freezing, the unit must be located

in

a

space

where the temperature is at least 40 degrees.

Space Requirements and Clearance

Dimensions

for

the

units

are

given

in

Table

1.

These dimensions are useful in checking

door

clearances for moving the unit in and

for deter­

mining

space

requirements.

A

clearance

of

2

to

3 feet should

be

left on

each

side and on

the

ends

for

piping

and

electrical

connections

and

also

to

facilitate

service

operations.

Clearance

at

one

end

of

the

unit,

equal to

the

length

of

the

unit,

for

servicing

and

removal

of

chiller

tubes

must be provided.

Adequate Floor Strength

Approximate weights of units are given in Table

1.

Make

certain

that

the

floor

is

strong

enough

to support this weight. If necessary,

add

sup­

porting

structure

to

the

floor

for

transferring

weight	to the nearest beams. This						can	be	done
with steel beams or reinforced concrete slabs.
Vibration Isolation
Rubber-in-shear		vibration			insulators		and		muf­
flers	are installed on, or furnished with,								the
compressors of		all	units		beginning		with		early
1961	production.		The		inter-connecting			piping
must	be sufficiently flexible to prevent vibra­
tion	transmission,		if	vibration		still	exists,		vi­
bration	isolators	may		be used		on the unit			itself.
The	field-purchased			vibration		mountings		should
be placed under each corner of the							package.		The
weight	distribution		of	all	packages		except		the

30HH015 and 30HJ015 is such that each corner

mounting	supports	one fourth	of	the	operating
weight.	The weight	distribution	of	the	30HH015

and 30HJ015 units is 55-45 side to side and sym­ metrical front to back.

All phases of vibration isolation				are	fully	de­
scribed in Section 5X-1 of			the	Product		Infor­
mation book. Consult same for best results.
For	additional	information	see	"Compressor
Mounting."
	MOVING AND PLACING UNIT
Moving
The	skids on	which the unit	is	mounted		should
not	be removed	until the unit is at		the	final	loca­
tion. When handling the unit with a chain						hoist,
remove the panels so that they			will not		be	dam­
aged by the sling. Do not attach the sling to

Table 1 - Weight and Overall Dimensions - 30HH.HJ Liquid Chiller Package

	Shipping	Operating	Uncrated Dimensions (Ins.)			Crated Dimensions (Ins.)
Unit	Wt. (lbs.)	Wt. (lbs.)	Length	Width	Height	Length	Width	Height
30HH015	1430	1625	72	22-1/2	54-3/4	76	30	63
30HH020	2200	2150	72	22-1/2	54-3/4	76	30	63
30HJ015	1270	1460	72	22-1/2	47	76	30	63
ЗОН] 020	1700	1800	72	25-1/2	47	76	30	63
30HH025	2200	1950	72	22-1/2	54-3/4	76	30	63
30HH030	2550	1950	72	22-1/2	54-3/4	76	30	63
30H]025	2100	1800	72	25-1/2	47	76	30	63
30HJ030	2150	1850	72	25-1/2	47	76	30	63
30HH045	3010	3391	79-1/4	29-1/4	79	83-1/2	33	84-7/8
30HJ045	2455	2835	•79-1/4	29-1/4	66	83-1/2	33	84-7/8
30HH055	4622	5158	105-1/4	29-1/4	80-3/8	109-3/4	33	86-3/4
30HH065	4700	5236	105-1/4	29-1/4	80-3/8	109-3/4	33	86-3/4
30HJ065	3700	4236	105-1/4	29-1/4	Ó6	109-3/4	33	86-3/4

Carrier

INSTALLATION 30HH,HJ

piping or equipment. Move the unit in an upright

position,		and	let	it down gently from the	truck
or	rollers.		On	30HH,HJ015-030 units the	sling
can	be	placed		under the frame channels at	the
main support (Fig. 7). On 30HH,HJ045 thru					065
units, the sling can be placed under the skids.

Placing

To anchor the equipment;

1.Locate the hold down bolts as shown in the

dimension	drawings.	The	areas	where	the
four corners will be located should be ap­
proximately level before the unit is placed.
2. Set the	unit in place	and	level	with a	spirit

level on the frame channels.

3.Bolt the unit to the floor. This is usually de­

sirable	for	basement or ground floor			instal­
lations	that	can	transmit	vibration	to the
ground	without		affecting	the building	struc­
ture.

Fig. 7 - Rig Sling to Hoist Unit

(015-030 Shown)

Table 2 - Compressor Motor Physical Data

Unit Size		30HH, H]		30HH, H]		30HH, HJ	30HH, HJ	30HH, HJ		30HH	30HH, HJ
		0J5		020		025	030	045		055	065
Compressor Type						Hermetic Reciprocating
Number				2		2	2	3		4	4
Sizes		1 - 6D73»		2 - 6D68		1 - 6D68	2 - 6D73*	3 - 6D73*		1 - 6D68	4 - 6D73*
						1 - 6D73*				3 - 6D73
Cylinder (Total No.)		6		12		12	12	18		24	24
Speed - 60 Cycle (rpm)		1750		1750		1750	1750	1750		1750	1750
- 50 Cycle (rpm)		1460		1460		1460	1460	1460		1460	1460
Oil Charge (10 pt per compr) (pr)		10		20		20	20	30		40	40
Cylinder Unloading Devices (No.) t		2				1	1	1			1
*6D7 3 Compressors are used	on rhe 30HH models			t Each cylinder unloading device unloads two cylinders
only. 30HJ Models are supplied with 6D75 com­					of the compressor when it is energized.
pressors.

30HH/HJ INSTALLATION

Carrier

Table 3 - Condenser Physical Data

Unit Size			30HH015	30HH020	30HH025			30HH030	30HH045	30HH055		30HH065
Condensers (No.)			1	2		2		2	3	2		2
Condenser Type					Shell-and-Coil					Sheil-anc -Tube
Tubes or Coils, each			6	4		1 - 6		6	6	64		64
						1 - 4
Effective External Surface, each (sq ft)			82.7	53.9		1 - 5 3 . 9		82.7	82.7	165.7		165.7
						1 - 82.7
Water Side Volume, each (gal)			3.5	2.5		1 - 2.5		3.5	3.5	5.0		5.0
						1 - 3.5
Nominal Shell Diam (in.)			10-15/16	10-15/16	10-15/16			10-15/16	10-15/16	10-3/4		10-3/4
Shell Length (in.)			42-5/8	34-5/8	1	-	34-5/8	42-5/8	42-5/8	77		77
					1 - 42-5/8
Water Connections (Total No.)			2	4			4	4	2	4		3
		Inlet	1 - 2"	2 - 1-1/2”	1	-	1-1/2”	2 - 2"	3 - 2"	2 - 2"		1 - 3"
Water Connection					1 - 2"
Size (each cond. )		Outlet	1 - 2"	2 - 1-1/2"	1	-	1-1/2"	2 - 2”	3 - 2"	2 - 1-1/2"		2 - 2”
					1 - 2"
														Г'
Coil or Tube Type						Trufin
										Trufin
Coil or Tube OD (in.)						7/8				3/4
Nominal Shell Thickness (in.)						.278				.307
Materials		Shell				Steel				Steel
of		Coil or Tubes				Copper				Copper
Construction
		Tube Sheet				Steel				Steel
Max. Design		Water Side				100				100
Working Press, (psig)		Refrig. Side				385				385

NOTE: The 30HH065 unit is supplied with two subcooiers (one per circuit) to provide 15 F of subcooling.

INSTALLATION 30HH,HJ

m

Tabie 4 - Cooler Physical Data

Unit Size			30 HH, HJ	30HH, HJ	30HH, HJ		30HH. HJ		30HH. HJ	30 HH	30HH, HJ
			015	020	025		030		045	055	065
Refrigerant Circuits (No.)			1	2	2		2		2	2	2
Tubes (No.)			136	136	136		136		188	186	186
Effective External Tube Surface (sq ft)			125	126	127		128		179	258	258
Length Between Tube Sheets (in.)			60-1/4	60-1/4	60-1/4		60-1/4		60-1/4	85-7/8	85-7/8
Shell Side Water Volume (gal)			20.4	20.6	20.8		21.0		26.6	38.2	38.2
Baffles (No.)			31	25	21		17		15	17	17
Baffle Spacing (in.)			1-7/16	1-27/32	2-7/32		2-3/4		3-1/4	4-1/2	4-1/2
Nominal Shell Diam. (in.)			14	14	14		14		16	16	16
Water Connection Size, IPS (in.)			2	2	2		2		2	3	3
Cooler Type						Direct Expansion
Construction					Shell-and-Tube, Fixed Tubesheet
Tube Type and Size (in.)					Prime Surface, 3/4 OD
Nominal Shell Thickness (in.)						1/4
Nominal Tube Sheet Thickness (in.)							1-3/8 Min.
		Shell					Steel
Materials		Tubes					Copper
of		Tube Sheet					Steel
Construction
		Baffles				Polypropylene
		insulation			Closed Cell Foam Plastic, Vapor Sealed
Maximum Design		Water Side				250
Working Press.(psig)		Refrig. Side				150

30HH,HJ INSTALLATION						Carrier
			Table 5 - Refrigerant Circuits
	Unit Size	Circuits			Description of Refrigerant Circuit		Capacity (%)
	зоны, HJ015	1		(i) 6D73 or 6D75 Compr, Full Cooler Surface			100
				(1) 6D68 Compr, 1/2 Cooler Surface			50
	30HH, HJ020	2		(1)	6D68 Compr, 1/2 Cooler Surface		50
				(1)	6D68 Compr, 1/2 Cooler Surface		40
	зоны, HJ025	2		(1)	6D73 or 6D75 Compr, 1/2 Cooler Surface		60
				(1)	6D73 or 6D75 Compr, 1/2 Cooler Surface		50
	ЗОНЫ, HJ030	2		(1)	6D73 or 6D75 Compr, 1/2 Cooler Surface		50
				(1)	6D73 or 6D75 Compr, 1/3 Cooler Surface		33
	ЗОНН, HJ045	2		(2)	6D73 or 6D7S Compr, 2/3 Cooler Surface		67
				(2)	6D73 Compr, 1/2 Cooler Surface		55
	30НН055	2		(1)	6D73 & (1) 6D68 Compr, 1/2 Cooler Surface		45
				(2)	6D73 or 6D75 Compr, 1/2 Cooler Surface		50
	ЗОНН, HJ065	2		(2) 6D73 or 6D75 Comipr, 1/2 Cooler Surface			50

NOTE: 6D73 Compressors arc used on ЗОНЫ models. 6D75 Compressors are used on 30HJ miodels.

Table 6 - Refrigerant Charge

Model ЗОНН, HJ	015	020	025	030	045	055	065
Refrigerant 22 (lb)	35	46	46	46	69	124	140

NOTES: 1. The refrigerant charges listed above do not include the additional charge required

for remote condensers and piping with ЗОН] models.

2. The 30HH015 and 30HH020 units are shipped fully charged with refrigerant. Other units are shipped with holding charges only.

COMPRESSOR MOUNTING

All 30HH,HJ chillers, as shipped,		have	the	com­
pressor rigidly mounted to	the	frame	with	bolts
and steel pipe spacers.	For	proper	operation,

the following procedure should be followed;

30HH,HJ020 to 030 units (Fig. 8):

1.Loosen the four (4) hold-down bolts on one compressor.

2.Remove one hold-down bolt, lock washer and nut on oil pump end of compressor. Lift

	end of compressor and remove pipe spacer.
3.	Tighten hold-down bolt which is diagonally
	opposite spacer which was removed.
4.	Install 3/8-16	X 1-1/2"	bolt, supplied in	bag
	of fastenings,	between	compressor foot	and

bracket. Reinstall lock washer and nut.

5. Loosen hold-down bolt tightened in step No. 3.

6. Repeat steps 2 thru 5 for other oil pump end bolt.

10

INSTALLATION 30HH,HJ

FRONT	REAR
MOTOR END	PUMP END

Fig. 8 - 30HH,HJ015-030 Compressor	Fig. 9 - 30HH,HJ045-065 Compressor
Mounting	Mounting

7.	Remove		both compressor			motor		end	hold­
down		bolts, nuts,		lock		washers,		and	pipe
spacers, and replace with 3/8-16 x 1” bolts.
Reinstall lock washers and nuts								to	fasten
mounting brackets to resilient mounts.
30HH,HJ045 to 065 units (Fig. 9):
The	pairs of manifolded				compressors		are mount­
ed on common mounting brackets. Be sure all
pipe spacers are removed for proper operation.
The mounting of the single compressor on
30HH,HJ045 units is similar.
1.	Remove		one 3/8-16 x 3-1/2” hold-down						bolt,
nut,		lock	washer, and pipe spacer on					the	pump
end of the compressor.
2.	Install		a 3/8-16 x 1-3/4” bolt,				supplied in
bag		of	fastenings,	and	reinstall nut			and	lock
washer from hold-down bolt, to							fasten		com­
pressor to mounting bracket.

3. Repeat steps 1 and 2 for the other pump end fastenings of the compressors.

4. Remove	one 3/8-16	x 2-1/2” hold-down bolt,
nut, lock	washer and	pipe spacer on the motor
end of the compressor.

5.Install a 3/8-16 x 1” bolt, supplied in bag of

fastenings, and		reinstall	nut	and lock	washer
from	hold-down	bolt	to	fasten	mounting
bracket to resilient mount.

6.Repeat steps 5 and 6 for the other motor end fastenings of the compressor.

CONDENSER WATER PIPING

Water supply lines should be as short as condi­ tions will permit. The size of these lines is not necessarily the same as those of the water valve

connections.

All

piping must be sized in accord­

ance

with

tije

pressure

head

available.

This is

especially

true

on

cooling

tower

applications.

See

the

System

Design Manual, Part 3- "Piping

Design” for methods used in sizing pipe.

For

installations

using a waste water system, a

separate

water

regulating

valve

is

required

for

each

refrigerant

circuit.

Water

regulating valves

are not supplied by Carrier.

NOTE: Provide means for draining the

system

in

the

winter

and

for

repairs.

Figure 10 thru 16 show suggested piping

connections

for

each

model

when

used

with waste water or cooling towers.

Frangible Disc Safety Union

Each

condenser

is

provided

with

a

frangible

disc that will relieve at

385 psig to protect the

system from excessive pressure.

Some

local

codes

require

piping

from

the

relief

to the

outdoors.

The relief

outlet

size

on

both

models is 3/8” male flare.

11

1064

зонн^ш	Carrier
	INSTALLATION

OUTLET

2" PIPE THD.

INLET

2" PIPE THD.

WATER REGULATING

VALUE-WASTE WATER

SYSTEMS ONLY

Fig. 10 - 30HH015 Condenser Piping Fig. 11 - 30HH020 Condenser Piping

Fig. 12 - 30HH025 Condenser Piping

Fig. 13 - 30HH030 Condenser Piping

1064

12

Carrier

INSTALLATION 30HH,HJ

Fig. 14 - 30HH045 Condenser Piping

Fig. 15 - 30HH055 Condenser Piping

Fig. 16 - 30HH065 Condenser Piping

13

1064

30HH,HJ							INSTALLATION
Drain Connection
Drain	connections			are	generally		governed		by
local	codes.		Water	leaving		the	condenser		is
under	pressure		and	should		not be		connected
directly		into	sewer	lines;	otherwise			water	may
back	up	into	other	fixtures.		Local	codes		nor­
mally	require		connections		similar		to	the	one
shown in Fig. 17.
		COOLER WATER PIPING							Fig. 17 - Drain Connections

The cooler of each liquid chilling package is pro­ vided with stubouts for chilled water piping con­

nections. The	water outlet stubout	is provided
with a 90 degree elbow which contains		the	chilled
water safety	thermostat bulb. Holes	are	pro­

vided in both of the side panels for piping to the stubouts.

The

chilled

water

temperature

controller

is

mounted on the front of

the unit and has the con­

trol

bulb

and

capillary

tubing

wrapped

and

taped

before

shipping.

It

is

required

that

the

control

bulb

be

field

inserted

in

the

chilled

water

line.

It usually is inserted in

the return or inlet chilled

water piping. Figure 18

shows

a

typical

chilled

water

piping

arrangement

in the vicinity of the

cooler.

Details

of

the

required

remote

chilled

water

piping

are

outlined

in

the

Carrier

System

Design Manual, Part 3, "Piping Design."

Plan the piping so it has

a

minimum

number of

changes

in

elevation.

A

manual

or

automatic

vent-valve must

be

installed

at

the

high

points

in

the

line

to

permit venting

of

air

from the

chilled

water

circuit.

Standard

practice

for

in­

stalling

forced

water

systems

must

be

followed.

System

pressures

may

be maintained by using a

pressure

tank

or

a

combination

relief

valve

and

reducing valve.

It

is

recommended

that

thermometers

be

in­

stalled

in

entering

and

leaving

chilled

liquid

lines. Provide

drain connections

at

all

low

points

to

permit

complete

drainage of the system. A

chiller

drain

shut-off

valve

should

be

connected

to

the

chiller

drain

line before placing

the

unit

in operation (Fig. 18).

Insulate piping to prevent heat

loss

and

sweating.

Cover

the

insulation

with a moisture seal. Do

not

insulate

piping

before

all

leak

testing

has

been completed.

Fig. 18 - Cooler Water Piping, Front View

14

Carrier

INSTALLATION 30HH,HJ

REFRIGERANT PIPING

For	refrigerant piping			sizing		refer to Part				3	-
’’Piping Design” - of the System Design Manual.
The ЗОНЫ and HJ Packaged						Liquid		Chillers			are
leak tested at the factory and							provided		with		a
holding charge of Refrigerant 22.
	NOTE: 30HH015,020 fully charged with
	R 22 at factory.
If the holding charge is still						in	the	system		upon
arrival at		the	erection	site,	the	likelihood			of	leaks
is	slight.	If	the unit	is	not	under		pressure,			test
for leaks as outlined under Leak Testing.

NOTE: Be sure to open all stop valves when testing for leaks.

30HJ UNIT

This	section	also	applies		to the 30HJ unit which
is to	be connected			to a	remote	condenser	in the
field.	Figure	19	is	a	typical	refrigerant	piping
diagram showing			the 30HJ020 thru 030 unit and a
9H	Evaporative		Condenser. Simdlar connections

may be used for the 30Ш045 and 065 unit using

manifolded	compressors.	Figure	20-22	illus­
trate typical	refrigerant	piping for	30HJ020	thru

065	units and air-cooled						condensers.			Receivers
have	been		omitted,		but	it	must		be	recognized
that	with		this	arrangement			the	refrigerant			charge
is	critical.			An	overcharged			or	undercharged
system		can	cause a		loss of		capacity.		If	a	receiver
is	not	Included,			an accurate			refrigerant			charge
must be maintained to assure efficient operation.
Figure		20-22		are	shown	to		illustrate		a	typical

installation using 9A or 09DC016 air-cooled con­

densers.	These illustrations are	to be	used	as a
guide when designing a system and			are not	in­
tended	to be used as an actual	piping	layout.	Con­

sult the ’’System Design Manual” and condenser literature before designing the actual system.

Each 30HJ unit (except -015) consists of two independent refrigerant circuits. Each circuit must be isolated from the other.

Discharge	lines	and	liquid lines	are	shown mani­
folded at	the	units	on 30HJ045	and	065 units to

permit a minimum amount of piping. Individual

discharge		lines may	be run	from each	compres­
sor	to	the condenser if desirable. Liquid lines
must	be	manifolded	as shown	to enter the	30HJ065

unit to agree with the unit refrigerant circuit. In­ dividual liquid line connections are necessary on the 30HJ045 unit.

FROM TABLE - FOR VENTING AS SHOWN

UNI T	“X” DIM. *
30HU015	6 "
3ÛHJ020	15"
30HJ025	15"
30HJ030	15"
30HU0A5	15"
3 OHJO6 5	1 5"

"X" DIM. - THIS IS

THE MINIMUM, ELEVATION REQUIRED BETWEEN A CONDENSER COIL OUTLET AND A RECE!VER INLET FOR THE TOTAL LOAD WHEN RECE;VER 1S VENTED TO COI I. OUTLET HEADER (BASED ON 10'

OF HORIZONTAL PIPE,

1 VALVE AND 2 ELBOWS). APPLIES TO 9H TYPE

EVAP. CONDENSER

- REFRIG. GAS

-REFIG. LIQUID

M U F F L E R S S H O U L D I N S T A L L E D A S C L O S E T O T H E C O M P R E S S O ч

A S P O S S I S L E .

Fig. 19 - Typical Refrigerant Piping 30HJ020-030 Units

with 9H Evaporative Condenser

15