Gebruiksaanwijzing /service van het product 30HW018-040 van de fabrikant Carrier
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Installation, Start-Up and Service Instructions CONTENTS Page GENERAL ....................................2 SAFETY CONSIDERA TIONS .....................2 INST ALLA TION .............................. 3-25 Location .....................................
GENERAL These installation instructions cover the 30HK, HL, HW A, HWB, HWC, and HWS units. The HL and HW A are con- denserless units, and the HK, HWB, HWC, and HWS units are all fluid cooled.
INST ALLA TION Location — Do not store units in an area exposed to weather because of sensitive control mechanisms and electronic devices. Locate unit indoors. See Fig. 4-8 for unit dimen- sional details. Allow 36 in. (914 mm) in front of the unit for control box access door .
TOP VIEW FRONT VIEW RIGHT SIDE VIEW LEFT SIDE VIEW UNIT 30HK DIMENSIONS — in. (mm) AB C D 040 5 1 ⁄ 4 (133) 90 (2286) 14 9 ⁄ 16 (370) 7 15 ⁄ 16 (202) 050,060 10 3 ⁄ 4 (273) 108 (2743) 20 1 ⁄ 16 (510) 13 9 ⁄ 16 (344) LEGEND COMP — Compressor K.
TOP VIEW FRONT VIEW RIGHT SIDE VIEW LEFT SIDE VIEW LEGEND CL Y — Cylinder COMP — Compressor CONN — Connection K.O. — Knockout NOTES: 1. Standard unit shown with the sound en- closure accessory . 2. Dimensions are in inches unless oth- erwise indicated.
UNIT 30HW A DIMENSIONS — in. (mm) ABCDE F G 018 12.58 (320) 19.20 (488) 20.48 (520) 33.85 (860) 1 1.72 (298) 5.75 (146) 17.95 (456) 025 12.82 (326) 18.98 (482) 20.57 (522) 33.85 (860) 1 1.72 (298) 5.75 (146) 17.95 (456) 028 12.64 (321) 18.31 (465) 20.
UNIT 30HWB DIMENSIONS — in. (mm) ABCDE F GHJ 018 13.14 (334) 18.72 (475) 22.02 (559) 33.85 (860) 1 1.72 (298) 5.75 (146) 12.29 (312) 17.95 (456) 9.28 (236) 025 13.22 (336) 18.25 (464) 22.10 (561) 33.85 (860) 1 1.72 (298) 5.75 (146) 12.29 (312) 17.95 (456) 9.
UNIT 30HWC,S DIMENSIONS — in. (mm) A BCDEFG 018 47.50 (1206) 9.90 (251) 14.00 (356) 18.15 (461) 17.95 (456) 6.69 (170) 34.20 (869) 025 48.30 (1227) 9.90 (251) 15.50 (394) 18.15 (461) 17.95 (456) 6.69 (170) 34.20 (869) 028 48.00 (1219) 10.00 (254) 15.
WEIGHT DISTRIBUTION A T EACH MOUNTING HOLE, 60 HZ UNITS UNIT SIZE MOUNTING HOLES 30HK 30HL ABCDABCD Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg 040 7 1 0 3 2 2 7 1 2 3 2 3 7 0 5 3 2 0 7 0 3 3 1 9 .
T able 1A — Physical Data; 30HK, HWB, HWC, and HWS Fluid-Cooled Units — English UNIT 30 HW-018* HW -025* HW-028* HW-035* HW-040* HK040 HK050 HK060 OPERA TING WT (Approximate) − lb HWB 795 950 10.
T able 1B — Physical Data; 30HK, HWB, HWC, and HWS Fluid-Cooled Units — SI UNIT 30 HW-018* HW -025* HW-028* HW-035* HW-040* HK040 HK050 HK060 OPERA TING WT (Approximate) − kg HWB 360 431 483 492 594 — — — HWC,S 554 61 1 668 679 766 — — — HK ————— 1284/ 1305† 1424/ 1514† 1514/ 1542† REFRIGERANT — kg R-22 HWB 5.
T able 2A — Physical Data; 30HL, HW A Condenserless Units — English UNIT 30 HW A018 HWA025 HW A028 HW A035 HWA040 HL050 HL060 OPERA TING WT (Approximate) − lb 740 880 960 975 1080 2070/ 2120* 2130/ 2190* REFRIGERANT† — lb R-22 1.6 2.0 2.4 2.
Step 5 — Make Piping Connections — See Fig. 13 and 14 for typical piping applications. 30HK, HWC, HWS CONDENSER DESCRIPTION — All 30HWC and HWS units use a shell-and-tube condenser with removable heads for easy tube servicing. Refrigerant is con- tained within the shell, and water flows through the tubes.
Fig. 13 — T ypical Piping with Fluid-Cooled 30HWB Unit Shown NOTES: 1. Chiller must be installed levelly to maintain proper compressor oil return. 2. Wiring and piping shown are general points-of-connection guides only and are not intended for a specific installation.
Fig. 14 — T ypical Piping with Air-Cooled 30HW A with Remote 09DK Unit Shown NOTES: 1. Chiller must be installed levelly to maintain proper compres- sor oil return. 2. Wiring and piping shown are general points-of-connection guides only and are not intended for a specific installation.
30HWB CONDENSER — When facing the back of the unit, the condenser is the uninsulated heat exchanger located on the right-hand side. The water connections are on the right- hand side of the heat exchanger with the LIQUID-IN con- nection at the bottom, and the LIQUID-OUT connection at the top.
The cooler fluid inlet and outlet connections are grooved- end. On 30HW units, the fluid enters at the top connection and leaves at the bottom connection. Procedures for making the grooved-end connections are the same as for the 30HWB condensers. See 30HWB Condenser section on page 16 for more details.
CONDENSER PRESSURE DROP — 30HK UNITS CONDENSER PRESSURE DROP — 30HWB UNITS NOTE: Ft of water = 2.31 x change in psig. Fig. 16 — Cooler and Condenser W ater Pressure Drop (cont) CONDENSER PRESSUR.
Step 6 — Make Electrical Connections — All field wiring must comply with local code requirements. Electrical data for the complete unit and for the compressors is shown in T ables 4A and 4B.
T able 4A — Electrical Data — 30HK, HWB, HWC, HWS Fluid-Cooled Units UNIT SIZE 30- UNIT COMPRESSOR (ea) V olts V oltage* MCA ICF MFA Rec Fuse RLA LRA MT A Nameplate (3 ph) Hz Min Max PW XL PW XL P.
T able 4B — Electrical Data — 30HL and HW A Condenserless Units UNIT SIZE 30- UNIT COMPRESSOR (ea) V olts V oltage* MCA ICF MFA Rec Fuse RLA LRA MT A Nameplate (3 ph) Hz Min Max PW XL PW XL PW XL .
LEGEND COM — Common CR — Compressor Relay CWP — Chilled W ater Pump DLS — Demand Limit Switch GCS — Ground Current Sensing NC — Normally Closed NO — Normally Open TB — T erminal Block .
LEGEND A— Alarm C— Contactor , Compressor COM — Common EQUIP — Equipment GND — Ground NC — Normally Closed NO — Normally Open R— Relay TB — T erminal Block TOR — T orroid, Accessory Ground Fault Interrupt Field Wiring Factory Wiring NOTE: Factory wiring is in accordance with the National Electrical Code (U.
A— Alarm C— Contactor CB — Circuit Breaker CH — Crankcase Heater CM — Control Module COM — Common COMP — Compressor CWFS — Chilled W ater (Fluid) Flow Switch CWP — Chilled W ater (Fluid) Pump D— Discharge DLS — Demand Limit Switch Fig.
PRE-ST ART -UP IMPOR T ANT : Before beginning Start-Up, complete Start-Up Checklist on pages CL-1 to CL-4. This check- list assures proper start-up of a unit, and provides a record of unit condition, application requirements, sys- tem information, and operation at initial start-up.
T a b l e5—T ypical Deadband Requirements UNIT CAP ACITY STEPS COOLER DESIGN RANGE, F (C) 5.0 (2.8) 10.0 (5.6) 15.0 (8.3) 2 1.3 (0.7) 2.5 (1.4) 3.8 (2.1) 3 0.8 (0.4) 1.7 (0.9) 2.5 (1.4) 4 0.6 (0.3) 1.3 (0.7) 1.9 (1.1) T able 6 — Deadband Setting MIN.
Check Oil Charge — The compressor(s) is factory- charged with oil. If oil is visible in the compressor sight glass(es), check the unit for operating readiness as described in Initial Check section (page 25), then start the unit.
DISCHARGE LINE CHECK V AL VE — On all 30HL, HW A units, a factory-supplied check valve is shipped with the unit (two valves are provided for 30HL units). The check valve(s) should be installed in the discharge line(s) downstream from, but close to, the compressor muf f ler .
The control module also monitors the high-pressure switch(es) and compressor internal thermal protection (30HW). If at any time one or both of these switches opens, the con- trol module shuts down the compressor and places the unit in a lockout condition.
If rapid cycling of the capacity steps occurs, the deadband setting is too low and should be raised to the point that rapid cycling will cease. If a cooler design range other than those shown in T abl.
Once the compressor is shut of f, the control system pre- vents the compressor from restarting within 5 minutes of when it was last shut down. Once this period has elapsed and the leaving fluid temperature rises above the set point, the com- pressor will start within 5 seconds.
T able 1 1 — Capacity Control Steps — 30HW Standard Units UNIT CAP ACITY CONTROL CAP ACITY OPERA TING 30HW STEPS* % CYLINDERS 018 1 33.3 2 2 66.7 4 3 100.0 6 025 1 50.0 2 2 100.0 4 028 1 33.3 2 2 66.7 4 3 100.0 6 035 1 33.3 2 2 66.7 4 3 100.0 6 040 1 33.
Thermistor — The resistance at various temperatures for the thermistor are given in T ables 12A and 12B. THERMISTOR REPLACEMENT , 30HK, HL UNITS Thermistors are installed directly in fluid circuit. Drain fluid before removing. Proceed as follows (see Fig.
T able 1 2A — Sensor T emperature (F) vs Resistance TEMPERA TURE RESIST ANCE (F) (OHMS) -2 5 98,010 -2 4 94,707 -2 3 91,522 -2 2 88,449 -2 1 85,485 -2 0 82,627 -1 9 79,871 -1 8 77,212 -1 7 74,648 -1.
T able 1 2B — Sensor T emperature (C) vs Resistance TEMPERA TURE RESIST ANCE (C) (OHMS) -32.0 100 049 -31.5 97 006 -31.0 94 061 -30.5 91 209 -30.0 88 449 -29.5 85 777 -29.0 83 191 -28.5 80 687 -28.0 78 264 -27.5 75 918 -27.0 73 648 -26.5 71 451 -26.
SERVICING COOLER (30HK,HL ONL Y) NOTE: The cooler on 30HW units is not serviceable. When cooler heads and partition plates are removed, tube sheets are exposed showing tube ends as shown in Fig. 23. Four tubes in the bundle are secured inside cooler at baffles and cannot be removed.
TROUBLESHOOTING Complete Unit Stoppage and Restart — Pos- sible causes for unit stoppage and reset methods are (also see T able 14): GENERAL POWER F AILURE — After power is restored, restart is automatic through the normal timer cycle. UNIT ON-OFF SWITCH IS OPEN — When the switch is opened, the unit stops immediately .
COOLING LOAD SA TISFIED — Unit shuts down if cool- ing load is satisfied. Unit restarts if required after comple- tion of 5-minute timer cycle. THERMISTOR F AILURE — If thermistor fails in open mode, the temperature controller shuts down the unit in an out-of- range condition.
T able 14 — T roubleshooting (cont) SYMPTOMS CAUSE REMEDY Compressor loses oil Leak in system Repair leak. Mechanical damage (blown piston or broken discharge valve) Repair damage or replace compressor as needed. Oil trapped in line Check piping for oil traps.
SERVICE TRAINING Packaged Service T raining programs are an excellent way to increase your knowledge of the equip- ment discussed in this manual, including: • Unit Familiarization • Installation O.
ST ART -UP CHECKLIST FOR CHILLER SYSTEMS (Remove and use for job file) A. Preliminary Information JOB NAME LOCA TION INST ALLING CONTRACTOR DISTRIBUTOR ST ART -UP PERFORMED BY EQUIPMENT : Chiller: MO.
B. Preliminary Equipment Check (YES or NO) (cont) HA VE POWER SIDE ELECTRICAL COMPONENT CONNECTIONS BEEN CHECKED FOR TIGHTNESS? ON 30HK,HL UNITS, IS THE PROPER CONTROL VOL T AGE SUPPLIED T O TB2-1 AND.
C. Unit Start-Up (cont) COOLER LOOP PROTECTION IF REQUIRED: GALLONS (LITERS) OF BRINE ADDED: PIPING INCLUDES ELECTRIC T APE HEA TERS. CHECK PRESSURE DROP ACROSS COOLER. FLUID ENTERING COOLER: PSIG (kPa) FLUID LEA VING COOLER: PSIG (kPa) (PSIG DIFFERENCE) x 2.
NOTES: Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
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