Carrier 30HH User Manual
Carrier
30HH,HJ
r-
Installation and
30
(o
Maintenance Instructions
in
¡n
\r.
4111111 y I
Jiy nil|FilJ
B
■as
HERMETIC RECIPROCATING
<a
LiaUIO CHILLING PACKAGE
0
Carrier Corporation 1964
LItbo m L’«S.A.
Tab
IS
12-62
INSTALLATION
CONTENTS
PAGE
STALLATION SECTION
Dimension Drawings
Preliminary Survey
Moving and Placing Unit
Unit Specifications
Compressor Physical Data
Condenser Physical Data
Cooler Physical Data
Refrigerant Circuits
Refrigerant Charge
Compressor Mounting
Condenser Water Piping
Cooler Water Piping
Refrigerant Piping
Leak Testing
Dehydrate the System
Start-up Procedures
Charge with Refrigerant
Oil Charge
Check the Controls
Starters and Overloads
Circuit Breakers
Water Regulating Valve
Temperature Controller Adjustment
Wiring Diagrams
Electrical Data
Capacity Controls 34-35
Sequence of Operation
Moisture and Liquid Indicator
3-5
6
6-7
7-10
7
8
9
10
10
10
11-13
14
15-16
17
17-18
18-20
20-21
21
21-23
23
23-24
24
24-26
27-32
33-34
35-36
37
Carrier
AINTENANCE SECTION
Condenser Maintenance 38-39
Trouble Diagnosis Chart
Compressor Maintenance
Cause and Prevention of Freeze-up
40-42
42
42
INSTALLATION
30HH,HJ
LEFT SiDE VIEW
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.
FRONT VIEW
. 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.
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.
MPT WATER
INLET
CONDENSER
(SEE NOTE I )
V..y V
CONTROL
BOX
CIRCUIT
BREAKERS' y •
COMPR. OVERLOAD
RESET BUTTON -
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
HJ030- IffOD___________
SAFETY THERMOSTAT
RESET BUTTON
2 DIA. HOLE ELECTRIC
CONN.
_
IDE VIEW
NOTES:
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 BACKOF COOLER
SECTION, PANELS OVER FRONT OF COMPR, STEP CONT.
AND CONTROL CENTER SECTIONS.
3 SIDE PANELS PROVIDED WITH HOLES FOR CHILLED WATER
PIPING.
FRONT VIEW
Fig. 3 - 30HH,HJ025,030 Dimensional Data
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
notes:
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
Unit
30HH015
30HH020
30HJ015 1270
ЗОН] 020
30HH025 2200
30HH030 2550
30H]025
30HJ030 2150
30HH045
30HJ045 2455
30HH055 4622
30HH065 4700
30HJ065 3700
Wt. (lbs.)
1430
2200
1700
2100
3010
Operating
Wt. (lbs.)
1625
2150
1460
1800
1950
1950
1800
1850
3391 79-1/4 29-1/4
2835
5158
5236
4236
Uncrated Dimensions (Ins.)
Length
72
72
72
72
72
72 22-1/2
72
72 25-1/2
•79-1/4
105-1/4
105-1/4
105-1/4
Crated Dimensions (Ins.)
Width Height
22-1/2 54-3/4 76 30 63
22-1/2
22-1/2 47
25-1/2 47
22-1/2 54-3/4
25-1/2 47
29-1/4 66 83-1/2 33
29-1/4 80-3/8
29-1/4
29-1/4
54-3/4 76
54-3/4
47
79 83-1/2 33
80-3/8
Ó6
Length
76
76 30
76 30
76 30
76
76
109-3/4 33
109-3/4 33
109-3/4
Width Height
30 63
30
30 63
30 63
33
63
63
63
63
84-7/8
84-7/8
86-3/4
86-3/4
86-3/4
Carrier
INSTALLATION
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.
30HH,HJ
Fig. 7 - Rig Sling to Hoist Unit
(015-030 Shown)
Table 2 - Compressor Motor Physical Data
Unit Size
Compressor Type
Number
Sizes
Cylinder (Total No.)
Speed - 60 Cycle (rpm) 1750 1750 1750
- 50 Cycle (rpm) 1460 1460
Oil Charge (10 pt per compr) (pr) 10 20 20 20
Cylinder Unloading Devices (No.) t 2 1 1 1
*6D7 3 Compressors are used on rhe 30HH models
only. 30HJ Models are supplied with 6D75 com
pressors.
30HH, H]
0J5
1 - 6D73» 2 - 6D68 1 - 6D68
6
30HH, H]
020
2 2 2 3 4
12 12 12 18 24
30HH, HJ
025
1 - 6D73*
1460
t Each cylinder unloading device unloads two cylinders
of the compressor when it is energized.
30HH, HJ
030
Hermetic Reciprocating
2 - 6D73* 3 - 6D73* 1 - 6D68
1750 1750
1460
30HH, HJ
1460 1460 1460
045
30 40 40
30HH
055
3 - 6D73
1750
30HH, HJ
4 - 6D73*
065
4
24
1750
1
30HH/HJ INSTALLATION
Table 3 - Condenser Physical Data
Carrier
Unit Size
Condensers (No.)
Condenser Type
Tubes or Coils, each
Effective External Surface, each (sq ft)
Water Side Volume, each (gal)
Nominal Shell Diam (in.)
Shell Length (in.)
Water Connections (Total No.)
Water Connection
Size (each cond. )
Coil or Tube Type
Coil or Tube OD (in.)
Nominal Shell Thickness (in.)
Materials
of
Construction
Max. Design
Working Press, (psig)
Inlet
Outlet
Shell
Coil or Tubes
Tube Sheet
Water Side
Refrig. Side
30HH015
1
6
82.7
3.5
10-15/16 10-15/16 10-15/16 10-15/16
42-5/8
2 4
1 - 2"
1 - 2"
30HH020
2
4
53.9
2.5
34-5/8
2 - 1-1/2”
2 - 1-1/2"
30HH025
2 2
Shell-and-Coil
1 - 6
1 - 4
1-53.9
1 - 82.7
1 - 2.5
1 - 3.5
1 - 34-5/8
1 - 42-5/8
4 4
1 - 1-1/2”
1 - 2"
1 - 1-1/2"
1 - 2"
Trufin
7/8 3/4
.278
Steel Steel
Copper Copper
Steel Steel
100
385
30HH030
6
82.7
3.5
42-5/8 42-5/8 77 77
2 - 2"
2 - 2” 3 - 2"
30HH045 30HH055
3
6
82.7
3.5
10-15/16
2 4
3 - 2"
2
Sheil-anc -Tube
64 64
165.7 165.7
5.0
10-3/4 10-3/4
2 - 2"
2 - 1-1/2"
Trufin
.307
100
385
30HH065
2
5.0
3
1 - 3"
2 - 2”
Г'
NOTE: The 30HH065 unit is supplied with two subcooiers (one per circuit) to provide 15 F of subcooling.
m
INSTALLATION 30HH,HJ
Tabie 4 - Cooler Physical Data
Unit Size
Refrigerant Circuits (No.)
Tubes (No.) 136
Effective External Tube Surface (sq ft)
Length Between Tube Sheets (in.)
Shell Side Water Volume (gal) 20.4
Baffles (No.)
Baffle Spacing (in.)
Nominal Shell Diam. (in.)
Water Connection Size, IPS (in.)
Cooler Type
Construction
Tube Type and Size (in.) Prime Surface, 3/4 OD
Nominal Shell Thickness (in.) 1/4
Nominal Tube Sheet Thickness (in.)
30 HH, HJ
015
1
125
60-1/4
31
1-7/16
14
2
30HH, HJ
020
2
136
126
60-1/4 60-1/4 60-1/4
20.6
25 21
1-27/32 2-7/32
14
2
30HH, HJ
025
2
136
127
20.8
14 14
2
Shell-and-Tube, Fixed Tubesheet
30HH. HJ
030
2
136
128 179
21.0
17 15
2-3/4 3-1/4
2
Direct Expansion
1-3/8 Min.
30HH. HJ
045
2
188
60-1/4
26.6
16
2
30 HH
055
186
258 258
85-7/8
38.2
4-1/2 4-1/2
30HH, HJ
2
85-7/8
17 17
16 16
3
065
2
186
38.2
3
Materials
of
Construction
Maximum Design
Working Press.(psig)
Shell
Tubes
Tube Sheet
Baffles
insulation
Water Side
Refrig. Side 150
Closed Cell Foam Plastic, Vapor Sealed
Steel
Copper
Steel
Polypropylene
250
30HH,HJ INSTALLATION
Table 5 - Refrigerant Circuits
Carrier
Unit Size
зоны, HJ015
30HH, HJ020
зоны, HJ025 2
ЗОНЫ, HJ030 2
ЗОНН, HJ045
30НН055 2
ЗОНН, HJ065
NOTE: 6D73 Compressors arc used on ЗОНЫ models. 6D75 Compressors are used on 30HJ miodels.
Circuits
1
2
2
2
Description of Refrigerant Circuit
(i) 6D73 or 6D75 Compr, Full Cooler Surface
(1) 6D68 Compr, 1/2 Cooler Surface
(1) 6D68 Compr, 1/2 Cooler Surface
(1) 6D68 Compr, 1/2 Cooler Surface
(1) 6D73 or 6D75 Compr, 1/2 Cooler Surface
(1) 6D73 or 6D75 Compr, 1/2 Cooler Surface
(1) 6D73 or 6D75 Compr, 1/2 Cooler Surface
(1) 6D73 or 6D75 Compr, 1/3 Cooler Surface
(2) 6D73 or 6D7S Compr, 2/3 Cooler Surface
(2) 6D73 Compr, 1/2 Cooler Surface
(1) 6D73 & (1) 6D68 Compr, 1/2 Cooler Surface 45
(2) 6D73 or 6D75 Compr, 1/2 Cooler Surface
(2) 6D73 or 6D75 Comipr, 1/2 Cooler Surface
Table 6 - Refrigerant Charge
Capacity (%)
100
50
50
40
60
50
50
33
67
55
50
50
Model ЗОНН, HJ
Refrigerant 22 (lb)
NOTES: 1. The refrigerant charges listed above do
not include the additional charge required
for remote condensers and piping with
ЗОН] models.
015
35
020
46
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
025 030
46 46
2. The 30HH015 and 30HH020 units are
shipped fully charged with refrigerant.
Other units are shipped with holding
charges only.
045 055
69
124
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.
065
140
10
INSTALLATION
30HH,HJ
Fig. 8 - 30HH,HJ015-030 Compressor
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.
FRONT
MOTOR END
REAR
PUMP END
Fig. 9 - 30HH,HJ045-065 Compressor
Mounting
6. Repeat steps 5 and 6 for the other motor end
fastenings of the compressor.
CONDENSER WATER PIPING
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.
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
OUTLET
2" PIPE THD.
INLET
2" PIPE THD.
INSTALLATION
WATER REGULATING
VALUE-WASTE WATER
SYSTEMS ONLY
Carrier
Fig. 10 - 30HH015 Condenser Piping Fig. 11 - 30HH020 Condenser Piping
Fig. 12 - 30HH025 Condenser Piping
1064
Fig. 13 - 30HH030 Condenser Piping
12
Carrier
INSTALLATION
30HH,HJ
Fig. 14 - 30HH045 Condenser Piping
Fig. 15 - 30HH055 Condenser Piping
13
Fig. 16 - 30HH065 Condenser Piping
1064
30HH,HJ
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.
INSTALLATION
COOLER WATER PIPING
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
Fig. 17 - Drain Connections
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
MUFFLERS SHOULD
AS POSSISLE.
INSTALLED AS CLOSE TO THE COMPRESSOч
Fig. 19 - Typical Refrigerant Piping 30HJ020-030 Units
with 9H Evaporative Condenser
UNI T
30HU015
3ÛHJ020
30HJ025 15"
30HJ030
30HU0A5
3OHJO65
“X” DIM. *
6"
15"
15"
15"
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
15
Loading...