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44

Air-Cooled Liquid Chiller

HVAC Guide Specifications

Size Range:

10 to 55 Nominal Tons
(25 to 200 Nominal kW)

Carrier Model Number: 

30RA

Part 1 — General

1.01 SYSTEM DESCRIPTION

Microprocessor controlled, air-cooled liquid chiller
utilizing scroll compressors, low sound fans, optional
hydronic pump system and fluid storage tank.

1.02 QUALITY ASSURANCE

A. Unit shall be rated in accordance with ARI Standard

550/590, latest edition (U.S.A.).

B. All units shall be ASHRAE 90.1 compliant.

C. Unit construction shall comply with ASHRAE 15

Safety Code, UL 1995, and ASME applicable codes
(U.S.A. codes).

D. Unit shall be manufactured in a facility registered to

ISO 9001:2000 Manufacturing Quality Standard.

E. Unit shall be full load run tested at the factory.

1.03 DELIVERY, STORAGE AND HANDLING

A. Unit controls shall be capable of withstanding

150 F (66 C) storage temperatures in the control
compartment.

B. Unit shall be stored and handled per unit manufac-

turer's recommendations.

Part 2 — Products

2.01 EQUIPMENT

A. General:

Factory assembled, single-piece chassis, air-cooled
liquid chiller. Contained within the unit cabinet shall
be all factory wiring, piping, controls, refrigerant
charge (R-22), and special features required prior to
field start-up.

B. Unit Cabinet:

1. Frame shall be of heavy-gage galvanized steel.
2. Cabinet shall be galvanized steel casing with a

baked enamel powder or pre-painted finish.

3. Cabinet shall be capable of withstanding

500-hour salt spray test in accordance with the
ASTM (U.S.A.) B-117 standard. 

C. Fans:

1. Condenser fans shall be direct-driven, 11-blade

airfoil cross-section, reinforced polymer con-
struction, shrouded-axial type, and shall be stat-
ically and dynamically balanced with inherent
corrosion resistance.

2. Two-speed or single fan operation shall allow

reduced sound levels during scheduled unoccu-
pied operating periods. Manufacturers without
unoccupied reduced sound capability shall sub-
mit 

1

/

3

 octave band data and sound power data

as measured according to ARI 370 as confirma-
tion of unit sound characteristics.

3. Air shall be discharged vertically upward.
4. Fans shall be protected by coated steel wire

safety guards.

D. Compressors:

1. Fully hermetic scroll type compressors.
2. Direct drive, 3500 rpm, protected by line break

device, suction gas cooled motor.

3. External vibration isolation - rubber in shear.

E. Cooler:

1. Cooler shall be rated for a refrigerant working-

side pressure of 450 psig (3103 kPa) and shall
be tested for a maximum water-side pressure of
150 psig (1034 kPa).

2. Shall be single-pass, ANSI type 316 stainless

steel, brazed plate construction.

3. Shell shall be insulated with 

3

/

4

-in. (19 mm)

closed-cell, polyvinyl-chloride foam with a maxi-
mum K factor of 0.28.

4. Shall incorporate 2 independent refrigerant cir-

cuits on sizes 035 to 055; sizes 010 to 030
shall have one independent refrigerant circuit.

5. Cooler shall have an optional factory-installed

heater, to protect cooler from ambient tempera-
ture freeze down to –20 F (–29 C).

6. Unit shall be provided with a factory-installed

flow switch.

F. Condenser:

1. Coil shall be air-cooled with integral subcooler,

and shall be constructed of aluminum fins
mechanically bonded to seamless copper tubes.

2. Tubes shall be cleaned, dehydrated, and sealed.
3. Assembled condenser coils shall be leak tested

and pressure tested at 450 psig (3103 kPa).

G. Refrigeration Components:

Refrigerant circuit components shall include filter
drier, moisture indicating sight glass, thermal expan-
sion device, and complete operating charge of both
refrigerant R-22 and compressor oil.

H. Controls, Safeties, and Diagnostics:

1. Controls:

a. Unit controls shall include the following min-

imum components:

b. Microprocessor with non-volatile memory.

Battery backup system shall not be accepted.

c. Single terminal block for power and

controls.

d. Control transformer to serve all controllers,

relays, and control components.

e. ON/OFF control switch.
f. Replaceable solid-state relay panels and

controllers.

g. Pressure sensors installed to measure cooler

entering and leaving saturated temperatures
and outside air temperature. Thermistors

Guide specifications

Содержание AQUASNAP JUNIOR 30RA015

Страница 1: ...ure a compact all in one package de sign that installs quickly and easily on the ground or the rooftop The option al pump and hydronic components are already built in this costs less than buy ing and installing the components indi vidually The chiller s fully integrated and pre assembled hydronic system in stalls in minutes No other chiller in this class installs so easily and inexpen sively The p...

Страница 2: ...h optional cooler heater and low ambient control to 125 F 52 C ComfortLinkTM controls speak your language The ComfortLink controls communi cate in plain English making it as easy as possible to monitor and control each AquaSnap chiller while accurately maintaining fluid temperatures The large scrolling marquee display acts as a window into the unit s operation providing easy to read information ab...

Страница 3: ...s Configuration Time Clock Operating Modes Alarms Alarm Status ENTER MODE ESCAPE PROPELLER FAN AEROACOUSTIC FAN 1 3 OCTAVE BAND CENTER FREQUENCY Hz SOUND POWER dB A AEROACOUSTIC FAN vs PROPELLER FAN PENETRATES BUILDING STRUCTURE 25 40 63 130 168 250 400 630 1080 1600 2400 4000 6300 8000 90 85 80 75 70 65 60 55 50 Run Status Service Test Tem peratures Pressures Setpoints Inputs Outputs Configuratio...

Страница 4: ...ure Voltage 1 575 3 60 2 380 3 60 4 230 3 60 5 208 230 3 60 6 460 3 60 Compressor Start Option N Standard Across the Line Start Packaging 1 Standard Domestic Coil Cover and Bottom Skid 3 Standard Export with Coil Cover Top and Bottom Skid Shipping Bag 4 Full Export Crate 5 Option 1 with Factory Installed Coil Grilles 7 Option 3 with Factory Installed Coil Grilles 8 Option 4 with Factory Installed ...

Страница 5: ...l Centrifugal Monocell Pump s 3500 Rpm Expansion Tank Volume gal Total Acceptance 5 0 2 9 10 0 5 5 UNIT 30RA 010 015 018 022 025 030 035 040 045 050 055 REFRIGERANT TYPE R 22 TXV Controlled System Refrigerant Charge kg Ckt A Ckt B 7 3 10 9 14 1 18 2 20 5 22 7 20 0 13 6 20 4 13 6 20 0 20 0 20 4 20 4 25 0 25 0 COMPRESSORS Scroll Hermetic Quantity 1 1 2 2 2 2 3 3 4 4 4 Speed r s 58 3 Qty Ckt A 1 SM12...

Страница 6: ...7 349 429 1502 050 444 365 390 477 1676 055 443 342 377 433 1595 055 497 389 422 491 1799 30RA SIZE POUNDS ALUMINUM 30RA SIZE POUNDS COPPER A B C D Total Weight A B C D Total Weight 010 209 241 293 343 1086 010 221 262 312 370 1165 015 223 277 329 379 1208 015 242 312 359 426 1339 018 230 299 421 399 1349 018 244 334 455 445 1478 022 367 492 416 388 1663 022 395 562 453 443 1853 025 381 505 430 41...

Страница 7: ...8 926 1134 3983 055 1057 816 899 1033 3805 055 1176 920 999 1161 4256 30RA SIZE KILOGRAMS ALUMINUM 30RA SIZE KILOGRAMS COPPER A B C D Total Weight A B C D Total Weight 010 103 119 144 169 535 010 108 129 152 181 570 015 108 135 160 185 588 015 117 151 174 206 648 018 110 146 203 194 653 018 117 161 218 215 711 022 174 237 198 186 795 022 187 268 215 211 881 025 181 241 204 198 824 025 194 272 221 ...

Страница 8: ...on below the minimum step of unloading down to 15 of the minimum unit capacity depending on unit size Minimum load control is also available as a field installed accessory Condenser coil options These options are available to match coil construction to the site conditions for the best durability Refer to the Environmental Corrosion Protec tion white paper for more information Security grilles One ...

Страница 9: ...n or the Motormaster V are used Wind baffle kit This kit provides a factory designed wind baffle for applications requiring protection Field installed wind baffles are required when the Motormaster V is used Energy management module This module provides energy management capabilities to minimize chiller energy consumption Several features are provided with this mod ule including leaving fluid temp...

Страница 10: ...d surface OTHER SIDE AND ENDS 3 ft 914 mm from solid surface for service access 2 Coil side clearance with accessory hail guard installed is 3 ft 914 mm to outside edge of hail guard top panel 3 Coil side clearance for multiple chiller installation is 6 ft 1981 mm 4 Flow switch and strainer are factory installed in entering fluid piping 5 Dimensions in are in mm ...

Страница 11: ...surface OTHER SIDE AND ENDS 3 ft 914 mm from solid surface for service access 2 Coil side clearance with accessory hail guard installed is 3 ft 914 mm to outside edge of hail guard top panel 3 Coil side clearance for multiple chiller installation is 6 ft 1981 mm 4 Flow switch and strainer are factory installed in entering fluid piping 5 Dimensions in are in mm ...

Страница 12: ...rface OTHER SIDE AND ENDS 3 ft 914 mm from solid surface for service access 2 Coil side clearance with accessory hail guard installed is 3 ft 914 mm to outside edge of hail guard top panel 3 Coil side clearance for multiple chiller installation is 6 ft 1981 mm 4 Flow switch and strainer are factory installed in entering fluid piping 5 Dimensions in are in mm ...

Страница 13: ...S 3 ft 914 mm from solid surface for service access 2 Coil side clearance with accessory hail guard installed is 3 ft 914 mm to outside edge of hail guard top panel 3 Coil side clearance for multiple chiller installation is 6 ft 1981 mm 4 Strainer is factory installed in entering fluid piping Flow switch is factory installed in the leaving fluid piping 5 Dimensions in are in mm ...

Страница 14: ... ENDS 3 ft 914 mm from solid surface for service access 2 Coil side clearance with accessory hail guard installed is 3 ft 914 mm to outside edge of hail guard top panel 3 Coil side clearance for multiple chiller installation is 6 ft 1981 mm 4 Strainer is factory installed in entering fluid piping Flow switch is factory installed in the leaving fluid piping 5 Dimensions in are in mm ...

Страница 15: ...NDS 3 ft 914 mm from solid surface for service access 2 Coil side clearance with accessory hail guard installed is 3 ft 914 mm to outside edge of hail guard top panel 3 Coil side clearance for multiple chiller installation is 6 ft 1981 mm 4 Strainer is factory installed in entering fluid piping Flow switch is factory installed in the leaving fluid piping 5 Dimensions in are in mm ...

Страница 16: ...16 Dimensions storage tank 30RA010 018 a30 4603 ...

Страница 17: ...17 Dimensions storage tank 30RA022 030 a30 4604 ...

Страница 18: ...18 Dimensions storage tank 30RA035 055 a30 4605 ...

Страница 19: ...and External Pressure Drop 60 5 ft wg Using Pump Curve on page 21 Select Pump E at 103 1 60 5 ft wg To find pump horsepower follow the 4 63 in im peller curve for pump E on page 21 Hp 3 6 bhp Max hp 5 hp therefore necessary hp does not ex ceed pump rating SI EXAMPLE I Determine unit size and operating conditions required to meet given capacity at given conditions Given Capacity 160 kW Leaving Chil...

Страница 20: ...the internal Pressure Drop tables on page 24 NOTE Note that these pressure drops are for water If gly col is used correct by multiplying by the factors below 4 Add pressure drops found in Steps 1 3 This is the total pressure drop and total head required by the pump 5 Use the pump envelope charts page 25 to deter mine proper pump sizing Plot water flow rate Step 1 and total head Step 4 point on the...

Страница 21: ...UMP CURVE FOR HYDRONIC PACKAGE OPTIONS A C F AND H 1 5 2 0 Hp PUMP CURVE FOR HYDRONIC PACKAGE OPTIONS B D G AND J 2 3 Hp PUMP CURVE FOR HYDRONIC PACKAGE OPTIONS E AND K 5 0 Hp NPSH Net Postive Suction Head ...

Страница 22: ...PUMP UNITS 30RA035 055 SI PRESSURE DROP SINGLE PUMP UNITS 30RA010 030 English PRESSURE DROP SINGLE PUMP UNITS 30RA010 030 SI LEGEND 1 30RA010 3 30RA018 5 30RA025 7 30RA035 9 30RA045 11 30RA055 2 30RA015 4 30RA022 6 30RA030 8 30RA040 10 30RA050 Use the following formula to convert feet of water to psig ft of water 4335 psig Use the following formula to convert psig to feet of water psig 2 306 ft of...

Страница 23: ...ZES 30RA035 055 SI PRESSURE DROP SINGLE PUMP UNITS 30RA035 055 English PRESSURE DROP SINGLE PUMP UNITS 30RA035 055 SI LEGEND 1 30RA010 3 30RA018 5 30RA025 7 30RA035 9 30RA045 11 30RA055 2 30RA015 4 30RA022 6 30RA030 8 30RA040 10 30RA050 Use the following formula to convert feet of water to psig ft of water 4335 psig Use the following formula to convert psig to feet of water psig 2 306 ft of water ...

Страница 24: ...Y TANK FLOW RATE gpm PRESSURE DROP ft wg 30RA 900 010 30RA 900 001 009 100 0 10 0 1 0 0 1 10 100 1000 0 1 1 0 10 0 1 0 10 0 ACCESSORY TANK FLOW RATE L s PRESSURE DROP kPa 30RA 900 010 30RA 900 001 009 100 0 STORAGE TANK PRESSURE DROP CURVES ...

Страница 25: ... above the chiller then the expansion tank will require additional air pressure charge The expansion tank must be pressurized to provide at least 4 psig 28 kPa of positive pressure at the highest point in the hydronic piping system This will also ensure no air is drawn into the piping The amount of charge pressure in pounds per square inch psi that is required in the expansion tank is equal to 4 p...

Страница 26: ...6 22 2 37 4 14 6 24 4 35 0 14 1 25 7 33 8 30RA 022 22 9 23 2 54 8 21 8 25 5 52 3 20 6 28 0 49 5 19 4 30 9 46 5 18 7 32 4 44 8 30RA 025 25 9 27 5 62 1 24 6 30 1 59 0 23 2 32 9 55 6 21 6 35 9 51 9 12 0 17 0 28 9 30RA 030 29 6 30 8 71 1 28 2 33 9 67 6 26 7 37 2 64 0 25 1 41 0 60 2 13 2 19 5 31 8 30RA 035 37 7 38 3 90 4 35 9 41 9 86 2 34 0 46 0 81 7 32 0 50 5 76 8 30 9 53 0 74 2 30RA 040 41 0 43 1 98 ...

Страница 27: ... 18 4 2 6 56 6 20 0 2 4 53 8 21 8 2 3 50 8 23 8 2 2 26 2 12 3 1 1 30RA 022 78 2 23 2 3 4 74 9 25 3 3 2 71 4 27 6 3 1 67 4 30 1 2 9 63 2 32 9 2 7 30RA 025 88 6 27 5 3 8 84 6 29 8 3 6 80 2 32 3 3 5 75 4 35 0 3 2 40 7 17 3 1 8 30RA 030 101 2 30 9 4 4 96 8 33 6 4 2 92 1 36 6 4 0 87 2 39 9 3 8 44 7 19 8 1 9 30RA 035 128 9 38 3 5 5 123 5 41 6 5 3 117 6 45 3 5 1 111 3 49 3 4 8 104 6 53 7 4 5 30RA 040 140...

Страница 28: ...ized standards 3 All wiring must comply with applicable local and national codes 4 All piping must follow standard piping techniques Refer to Carrier System Design Manual or appropriate ASHRAE American Society of Heating Refrigeration and Air Conditioning Engineers handbook for details LEGEND Airflow Through Condenser Power Wiring Chilled Water Piping LEGEND Airflow Through Condenser Power Wiring ...

Страница 29: ... Strainer Blow Down Valve 2 Expansion Tank 3 Pump 4 Electric Heater 5 Air Vent Connection Port 6 Pressure Gages Petcocks 7 Heat Exchanger 8 Flow Switch 9 Balance Valve Drain Plug 10 Pressure Relief 11 Isolation Valves 12 Flex Connections 13 Pressure Reducing Fill Valve 14 Air Separator and Vent Factory Supplied ...

Страница 30: ...4 7 70 60 1 80 70 60 9 80 70 60 9 80 70 62 2 80 70 025 230 60 207 253 1 92 2 125 311 3 110 96 2 125 110 97 4 125 110 97 4 125 110 99 6 125 110 208 230 60 187 253 1 102 4 125 316 4 125 106 8 125 125 108 2 125 125 108 2 125 125 110 6 150 125 460 60 414 506 1 50 3 70 160 0 60 52 3 70 60 52 9 70 60 52 9 70 60 54 0 70 60 575 60 518 633 1 41 2 50 140 4 50 42 8 50 50 43 3 50 50 43 3 50 50 44 2 60 50 380 ...

Страница 31: ... 460 60 1 3 8 575 60 1 3 0 380 60 1 4 6 022 230 60 2 4 8 208 230 60 2 5 3 460 60 2 2 4 575 60 2 1 9 380 60 2 2 9 025 230 60 2 4 8 208 230 60 2 5 3 460 60 2 2 4 575 60 2 1 9 380 60 2 2 9 030 230 60 2 4 8 208 230 60 2 5 3 460 60 2 2 4 575 60 2 1 9 380 60 2 2 9 035 230 60 2 4 8 1 7 6 208 230 60 2 5 3 1 8 4 460 60 2 2 4 1 3 8 575 60 2 1 9 1 3 0 380 60 2 2 9 1 4 6 040 230 60 2 4 8 1 7 6 208 230 60 2 5 ...

Страница 32: ...5 43 8 380 208 230 60 32 7 265 40 8 265 48 7 380 460 60 14 6 120 20 2 135 23 8 175 575 60 12 2 80 16 6 120 18 9 140 380 60 18 9 155 26 4 170 30 1 235 040 230 60 36 7 265 36 7 265 43 8 380 208 230 60 40 8 265 40 8 265 48 7 380 460 60 20 2 135 20 2 135 23 8 175 575 60 16 6 120 16 6 120 18 9 140 380 60 26 4 170 26 4 170 30 1 235 045 230 60 30 9 265 36 7 265 30 9 265 36 7 265 208 230 60 34 3 265 40 8 ...

Страница 33: ... adjustable setting no additional steps of capacity are added as long as difference between leaving fluid temperature and set point is greater than 4 F 2 2 C and rate of change in leaving fluid temperature is less than 1 F per minute 0 6 C per minute If it has been less than 90 seconds since the last capacity change compressors will continue to run unless a safety device trips This prevents rapid ...

Страница 34: ...r air temperature or space temperature reset is selected The energy management module EMM is only required for tempera ture reset that is initiated by a 4 to 20 mA signal Demand limit If applied the demand limit function limits the total power draw of unit to selected point by con trolling number of operational compressors during periods of peak electrical demand The energy management module is re...

Страница 35: ... AWG American Wire Gage CWP Chilled Water Pump CWPI Chilled Water Pump Interlock EMM Energy Management Module GFI CO Ground Fault Interrupt Convenience Outlet FIOP Factory Installed Option NEC National Electric Code SPT Space Temperature TB Terminal Block a30 4606 ...

Страница 36: ...N SERIES AS SHOWN THE CONTACTS MUST BE RATED FOR DRY CIRCUIT APPLICATION CAPABLE OF HANDLING A 24VAC LOAD UP TO 50 MA 5 TERMINALS 11 AND 13 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP 1 CWP1 STARTER TER MINALS 13 AND 15 OF TB5 ARE FOR CONTROL OF CHILLED WATER PUMP 2 CWP2 STARTER THE MAX IMUM LOAD ALLOWED FOR THE CHILLED WATER PUMP RELAY IS 5 VA SEALED 10 VA INRUSH AT 24 V FIELD POWER SUPPLY IS NO...

Страница 37: ...37 Typical control wiring schematic storage tank FIELD POWER SUPPLY 230 1 60 ...

Страница 38: ...alled brine option NOTE Water flowing through cooler should not exceed 100 F 38 C Cooler flow range Ratings and performance data in this publication are for a cooling temperature rise of 10 F 6 C and are suitable for a range from 5 to 20 F 2 8 to 11 1 C temperature rise without adjustment The 30RA chillers may be operated using a different temperature range provided flow limits are not exceeded Fo...

Страница 39: ...aces sump and nozzles and would thus be classified as open whereas a correctly designed chilled water loop with the only water air inter face being in the expansion tank is closed Since closed and open water systems behave very differently the follow ing assumes that the chilled water loop is closed A system installed incorrectly such that air is not handled properly pipe leaks vent leaks air in p...

Страница 40: ...low down valve allows removal of particulates caught in the strainer without complete removal of the screen A female NPT connection is provided on the valve allowing hose connection for drainage outside the unit The ComfortLink controls provided have a built in fea ture to remind building owners or operators to clean the strainer by discharging the blow down valve at a pre set time interval Proper...

Страница 41: ...l be high enough to keep the fluid in a condition that it can be pumped at low ambient conditions Consult glycol fluid manufacturers for burst protection recommendations and fluid specifications High ambient temperature operation High outdoor ambient chiller start up and operation fully loaded is possible for standard 30RA chillers at ambient temperatures up to 120 F 50 C at nominal voltage Low am...

Страница 42: ...antly corrosion resistance E coated coils provide this protection since all coil surfaces are completely encapsulated from environmental contami nation Specify e coated aluminum fin coils for industrial environments with high levels of air pollution This option also provides better protection compared to standard or pre coated aluminum fin coils in industrial environments E coated copper fin coils...

Страница 43: ...done at the point of highest water temperature and lowest pressure Typical ly this point would be on the suction side of the pump as the water is returning from the system or terminals Gener ally speaking this is the best place to install an air separa tor if possible 1 Install automatic air vents at all high points in the sys tem If the 30RA unit is located at the high point of the system a vent ...

Страница 44: ...ower data as measured according to ARI 370 as confirma tion of unit sound characteristics 3 Air shall be discharged vertically upward 4 Fans shall be protected by coated steel wire safety guards D Compressors 1 Fully hermetic scroll type compressors 2 Direct drive 3500 rpm protected by line break device suction gas cooled motor 3 External vibration isolation rubber in shear E Cooler 1 Cooler shall...

Страница 45: ...or malfunction 6 Entering and leaving fluid temperature 7 Evaporator and condenser pressure 8 Time of day a Display module in conjunction with the microprocessor must also be capable of displaying the output results of a service test Service test shall verify operation of every switch thermistor fan and compressor before chiller is started b Diagnostics shall include the ability to review a list o...

Страница 46: ... be factory installed across the cooler and rated for 150 psig 1034 kPa f Balancing valve shall be factory installed to set flow gage ports shall be factory installed and rated for 300 psig 2068 kPa g Hydronic assembly shall have factory supplied electric freeze protection to 20 F 29 C when optional heaters are used h Piping shall be type L seamless copper tubing M Special Features Certain standar...

Страница 47: ... 5 Wind Baffle Kit Field installed accessory kit shall provide wind baffles for use with low ambient operation 6 Remote Enhanced Display Unit shall be supplied with indoor mounted remote 40 character per line 16 line display panel for field installation 7 Medium Temperature Brine Unit shall be factory modified to start and oper ate at leaving chilled fluid temperatures between 15 F 9 C and 40 F 4 ...

Страница 48: ... 1 18 Navigator Hand Held Display Module a Portable hand held display module with a minimum of 4 lines and 20 characters per line or clear English Spanish Portuguese or French language b Display menus shall provide clear language descriptions of all menu items operating modes configuration points and alarm diagnostics Reference to factory codes shall not be accepted c RJ 14 connection plug shall a...

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