Carrier 30GTN015-035 User Manual

Installation Instructions

Fig. 1 — Model 30GTN (020 Shown)

CONTENTS

Page

SAFETY CONSIDERATIONS
INSTALLATION

Step 1 — Rig and Place the Unit

• RIGGING

• PL A C ING UNIT

• MOUNTING UNIT

Step 2 — Check Compressor Mounting
Step 3 — Cooler Fluid and Drain Piping

Connections

• PREPARATION FOR YEAR-ROUND
OPERATION

• PREPARATION FOR WINTER SHUTDOWN

Step 4 — Make Electrical Connections

• POWER SUPPLY

• POWER WIRING

Step 5 — Install Accessories

• ELECTRICAL

• HOT GAS BYPASS

Step 6 — Refrigerant Circuit

• LEAK TESTING

• DEHYDRATION

• REFRIGERANT CHARGE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioning equip-

ment can be hazardous due to system pressures, electrical com­ponents, and equipment location (roofs, elevated structures,
etc).

Only trained, qualified installers and service mechanics

should install, start up, and service this equipment (Fig. 1).

Untrained personnel can perform basic maintenance func-

tions such as cleaning coils. All other operations should be per­formed by trained service personnel.

When working on the equipment, observe precautions in the

literature and on tags, stickers, and labels attached to the
equipment.

• Follow all safety codes.

• Wear safety glasses and work gloves.

• Keep quenching cloth and fire extinguisher nearby when

brazing.

• Use care in handling, rigging, and setting bulky

equipment.

• See Tables 1A and 1B for Physical Data.

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30GTN015-035

Reciprocating Liquid Chillers

with ComfortLink™ Controls

50/60 Hz

INSTALLATION

Step 1 — Rig and Place the Unit

RIGGING — Preferred method is with spreader bars from
above the unit. Use 2-in. (50 mm) OD pipe or hooks in lifting
holes. Rig with 4 cables and spreader bars. All panels must be
in place when rigging. See rigging label on unit for details con­cerning shipping weights, distance between lifting holes, center
of gravity, and spreader bar dimensions. See Fig. 2.

If overhead rigging is not possible, place chiller on skid or
pad for rolling or dragging. When rolling, use a minimum of
3 rollers. When dragging, pull the pad. Do not apply force to
the unit. When in final position, raise from above to lift unit off
pad.

All panels must be in place when rigging.

PLACING UNIT — There must be at least 4 ft (1.2 m) for
service and for unrestricted airflow on all sides of unit, and a
minimum of 8 ft (2.4 m) clear air space above unit. Provide
ample room for servicing cooler. For cooler removal see clear­ance requirements in Fig. 3-5. For multiple units, allow 8 ft
(2.4 m) separation between units for airflow and service.

If unit is to be used in an area with high solar radiation,
mounted position should be such that control box is not ex­posed to direct solar radiation. Exposure to direct solar radia­tion could affect the temperature switch controlling cooler
heaters. See Table 2.

ELECTRIC SHOCK HAZARD
Open all remote disconnects before servicing

this equipment.

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

Book 2
Ta b 5 c

PC 903 Catalog No. 563-068 Printed in U.S.A. Form 30GTN-10SI Pg 1 1-00 Replaces: New

Table 1A — Physical Data — 60 Hz

UNIT 30GTN 015 020 025 030 035
COMPRESSOR Reciprocating, Semi-Hermetic

No. ...Type 1...06DG537 1...06E2250 1...06E7265 1...06E7275 1...06E7299

No. Cyls (ea)...Speed, Rpm (r/s) 6...1750 (29) 4...1750 (29) 6...1750 (29) 6...1750 (29) 6...1750 (29)
Capacity Steps 32 3 3 3
Oil Charge*, Pt (L) 8 (3.8) 17 (8.0) 21 (9.9) 21 (9.9) 19 (9.0)

REFRIGERANT CHG, R-22

Total/Over Clear Glass, lb (kg) 25.0 (11.3)/5.0 (2.3) 31.0 (14.1)/7.0 (3.2) 40.0 (18.1)/12.0 (5.4) 47.0 (21.3)/14.0 (6.4) 57.0 (25.9)/8.0 (3.6)

→

CONDENSER FANS, Type Propeller Type, Direct Drive

No. ...Diameter, in. (mm) 2...30 (762) 2...30 (762) 3...30 (762)

Total Airflow, Cfm (L/s) 10,600 (5000) 15,700 (7400) 23,700 (11 200)
Speed, Rpm (r/s) 1140 (19) 1140 (19) 1140 (19)

CONDENSER COIL, Type Horizontal Plate Fin

Rows...Fins/in. (Fin Spacing mm) 2...19 (1.34) 3...17 (1.49) 2...19 (1.34) 3...17 (1.49) 3...17 (1.49)
Total Face Area, sq ft (m

COOLER Shell and Tube, Direct Expansion

Net Water Volume, gal. (L) 6.8 (25.7) 9.9 (37.5) 12.8 (48.4)
Maximum Design Working Pressure

psig (kPa)

WATER CONNECTIONS, in.

Inlet and Outlet 2 FPT 2
Drain

*See Oil Charge section for Carrier-approved oil.

2

) 23.5 (2.18) 23.5 (2.18) 39.2 (3.64) 39.2 (3.64) 58.4 (5.43)

Refrigerant Side — 235 (1620)

Water Side — 150 (1034)

1

3

/4 MPT

/2 FPT

3

/4 MPT

Table 1B — Physical Data — 50 Hz

UNIT 30GTN 015 020 025 030
COMPRESSOR Reciprocating, Semi-Hermetic

No. ...Type 1...06E2250 1...06E7265 1...06E7275 1...06E7299

No. Cyls (ea)...Speed, Rpm (r/s) 4...1450 (24.2) 6...1450 (24.2) 6...1450 (24.2) 6...1450 (24.2)
Capacity Steps 2333
Oil Charge*, Pt (L) 17 (8.0) 21 (9.9) 21 (9.9) 19 (9.0)

REFRIGERANT CHG, R-22

Total/Over Clear Glass, lb (kg) 26.0 (11.8)/6.0 (2.7) 35.0 (15.9)/8.0 (3.6) 42.0 (19.0)/12.0 (5.4) 49.0 (22.2)/14.0 (6.4)

→

CONDENSER FANS, Type Propeller Type, Direct Drive

No. ...Diameter, in. (mm) 2...30 (762) 2...30 (762)

Total Airflow, Cfm (L/s) 10,600 (5000) 15,700 (7400)
Speed, Rpm (r/s) 950 (15.8) 950 (15.8)

CONDENSER COIL, Type Horizontal, Plate Fin

Rows...Fins/in. (Fin Spacing mm) 2...19 (1.34) 3...17 (1.49) 2...19 (1.34) 3...17 (1.49)
Total Face Area, sq ft (m

COOLER Shell and Tube, Direct Expansion

Net Water Volume, gal. (L) 6.8 (25.7) 9.9 (37.5)
Maximum Design Working Pressure

psig (kPa)

WATER CONNECTIONS, in.

Inlet and Outlet 2 FPT
Drain

*See Oil Charge section for Carrier-approved oil.

2

) 23.5 (2.18) 23.5 (2.18) 39.2 (3.64) 39.2 (3.64)

Refrigerant Side — 235 (1620)

Water Side — 150 (1034)

3

/4 MPT

1201

2

MAXIMUM

UNIT

30GTN

SHIP WT

Lb Kg in. mm in. mm in. mm in. mm
015 1876 851 94.0 2388 48.0 1219 23.0 583 49.5 1256
020 2031 921 94.0 2388 47.5 1207 23.0 583 49.5 1256
025 2415 1095 94.0 2388 51.0 1295 34.5 876 73.5 1867
030 2606 1182 94.0 2388 51.0 1295 34.5 876 73.5 1867
035 3365 1526 127.0 3225 66.5 1689 35.5 901 73.5 1867

LIFTING

HOLES

“A”

CENTER OF GRAVITY

“B” “C”

“D”

Fig. 2 — Rigging with Spreader Bars

(Field Supplied)

Table 2 — Temperature Limits for Standard Units

TEMPERATURE F C
Maximum Ambient Temperature 125 52
Minimum Ambient Temperature 0–18
Maximum Cooler EWT* 95 35
Maximum Cooler LWT 70 21
Minimum cooler LWT† 38 3.3

LEGEND

EWT — Entering Fluid (Water) Temperature
LW T — Leaving Fluid (Water) Temperature

*For sustained operation, EWT should not exceed 85 F (29.4 C).

†Unit requires modification below this temperature.

MOUNTING UNIT — When unit is in proper location, use
of mounting holes in base rails is recommended for securing
unit to supporting structure, or for mounting unit on vibration
isolators if required. See Fig. 3-5. Fasteners for mounting unit

are field supplied. Be sure unit is level to ensure proper oil
return to compressor.

Step 2 — Check Compressor Mounting —

As
shipped, compressor is held down by 4 bolts. After unit is in­stalled, loosen each bolt using nut indicated in Fig. 6 until the
flat washer (

3

/8 in.) can be moved with finger pressure.

Step 3 — Cooler Fluid and Drain Piping Con­nections —

turn water connection is on the left and the leaving water con­nection is on the right. See Fig. 3-5 and 7. Install a minimum
40-mesh strainer in the cooler fluid inlet line just ahead of and
as close as possible to the cooler. Provide a means of venting
air from the high point of the field-installed piping.

After field piping is complete, freeze-up protect ion is rec­ommended using inhibited ethylene glycol or other suitable in­hibited antifreeze solution and electric heat tapes in area where
piping is exposed to low ambient temperatures (34 F [1 C] or
below). Heat tapes should possess a rating for area ambients
and be covered with a suitable thickness of closed-cell
insulation. Route power for heating tapes from a separately­fused disconnect. Identify disconnect as heat tape power source
with a warning that power must not be turned off except when
unit is being serviced.

The cooler drain connection is at the opposite end from th e
compressor (See Fig. 3-5). Insulate the drain piping (in the
same manner as the chilled water piping) for at least one ft
(305 mm) from cooler.

PREPARATION FOR YEAR-ROUND OPERATION — If
unit is on year-round operation, add sufficient inhibited ethyl­ene glycol or other suitable inhibited antifreeze solution to
chilled water to prevent freezing under low-ambient operating
conditions. Consult local water authority on characteristics of
area water and add a recommended inhibitor to the chilled
water.

PREPARATION FOR WINTER SHUTDOWN — Do not

shut off control power disconnect during off-season shutdown.

At end of cooling season:

1. Drain water from system.

2. Replace drain plug and put 2 gall ons (8 liters) of inhib­ited ethylene glycol (or other suitable inhibited anti­freeze) in cooler to prevent freezing of residual water.
(Remove plug on top of leaving chilled water noz zle to
add liquid.)

3. At the beginning of the next cooling season, refill cooler
and add recommended inhibitor.

When facing the cooler side of the unit, the re-

3

NOTES:

1. There must be minimum 8 ft (2.4 m) clear air space above unit.

2. Dimensions in [ ] are in millimeters.

3. The approximate operating weight of the unit is:

60 Hz

UNIT Lb Kg
30GTN015 1640 744
30GTN015C 1732 786
30GTN020 1821 826
30GTN020C 1945 882

UNIT A

30GTN015

30GTN020

(1219)

4

(1207)

′′′′

3

-11

′′′′-0″″″″

1

″″″″

/

2

50 Hz

UNIT Lb Kg
30GTN015 1741 790
30GTN015C 1833 831
30GTN020 1864 846
30GTN020C 1988 902

LEGEND

C—Copper Coils
COMPR — Compressor
MTG — Mounting
NEC — National Electrical Code (U.S.A.)
VAV — Variable-Air Volume

Fig. 3 — Dimensional Drawing, 30GTN015,020

4