Carrier 30XA080-500 specifications Pump Impeller Sizes, FTV-5, Rpm Impeller Dia, 090-160

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NOTE: Do not use automobile anti-freeze, or any other fluid that is not approved for heat exchanger duty. Only use appro- priately inhibited glycols, concentrated to provide adequate protection for the temperature considered.

SYSTEM PRESSURIZATION — A proper initial cold fill pressure must be established before filling of the unit. The initial cold fill pressure is the pressure applied at the filling point to fill a system to its highest point, plus a minimum pressure at the top of the system (4 psig minimum [27.6 kPa]) to operate air vents and positively pressurize the system. The expansion tank is very important to system pressurization. The expansion tank serves several purposes:

1.Provide NPSHR (Net Positive Suction Head Required) for the pump to operate satisfactorily.

2.Set system pressure.

3.Accommodate expansion/contraction of water due to temperature changes.

4.Acts as a pressure reference for the pump.

The expansion tank pressure must be set BEFORE the system is filled. Follow the manufacturer’s recommendation for instructions on setting the pressure in the expansion tank. NPSHR information is provided on the Pump Curves in Fig. 33-36 for units with factory-installed hydronic kits. See Table 4 for pump impeller sizes.

Once the system is pressurized, the pressure at the connec- tion point of the expansion tank to water piping will not change unless the water loop volume changes (either due to addition/ subtraction of water or temperature expansion/contraction). The pressure at this point remains the same regardless of whether or not the pump is running.

Since the expansion tank acts as a reference point for the pump, there cannot be two reference points (two expansion tanks) in a system, unless manifolded together. Where two or more 30XA chillers with the hydronic option are installed in parallel, there should not be more than one expansion tank in the system, unless manifolded together as seen in Fig. 27. It is permissible to install the expansion tank(s) in a portion of the return water line that is common to all pumps, providing that the tank is properly sized for combined system volume.

If the application involves two or more chillers in a primary secondary system, a common place for mounting the expan- sion tank is in the chilled water return line, just before the decoupler. See Fig. 27 for placement of expansion tank in primary-secondary systems.

If a diaphragm expansion tank is utilized (a flexible diaphragm physically separates the water/air interface) it is not recommended to have any air in the water loop. See the section on air separation on page 51 for instructions on providing air separation equipment.

FILLING THE SYSTEM — The initial fill of the chilled water system must accomplish three goals:

1.The entire piping system must be filled with water.

2.The pressure at the top of the system must be high enough to vent air from the system (usually 4 psig [27.6 kPa] is adequate for most vents).

3.The pressure at all points in the system must be high enough to prevent flashing in the piping or cavitation in the pump.

The pressure created by an operating pump affects system pressure at all points except one — the connection of the expansion tank to the system. This is the only location in the system where pump operation will not give erroneous pressure indications during the fill. Therefore, the best location to install the fill connection is close to the expansion tank. An air vent should be installed close by to help eliminate air that enters during the fill procedure.

When filling the system, ensure the following:

1.Remove temporary bypass piping and cleaning/flushing equipment.

2.Check to make sure all drain plugs are installed.

Normally, a closed system needs to be filled only once. The actual filling process is a fairly simple procedure. All air should be purged or vented from the system. Thorough venting at high points and circulation at room temperature for several hours is highly recommended.

NOTE: Local codes concerning backflow devices and other protection of the city water system should be consulted and followed to prevent contamination of the public water supply. This is critical when antifreeze is used in the system.

SET WATER FLOW RATE — Once the system is cleaned, pressurized, and filled, the flow rate through the chiller needs to be established. On units with the hydronic package, this can be accomplished by using the balancing valve. Follow the manufacturer’s recommendations for setting the balancing valve. Local codes may prohibit restricting the amount of water using the balancing valve for a given motor horsepower. In this case, use the method listed in the Pump Modification/ Trimming section. See below for the type of combination valve in 30XA units with the optional hydronic package.

30XA UNIT SIZE

SINGLE/DUAL PUMP

090-160

FTV-5 in.

NOTE: Carrier recommends a differential pressure gage when measuring pressures across the pumps or balancing valves. This provides for greater accuracy and reduces error build-up that often occurs when subtracting pressures made by different gages.

A rough estimate of water flow can also be obtained from the pressure gages across the 30XA heat exchanger.

Figure 33 and 34 shows the relationship between gpm and heat exchanger pressure drop. It should be noted that these curves are for fresh water and “clean” heat exchangers; they do not apply to heat exchangers with fouling. To read the chart, subtract the readings of the two pressure gages on the hydronic kit. This number is the pressure drop across the heat exchanger. Adjust the factory-installed balancing valve or external balanc- ing valve (in units without hydronic package) until the correct pressure drop is obtained for the required flow.

Table 4 — Pump Impeller Sizes

30XA

PUMP

 

SINGLE PUMP

 

 

DUAL PUMP

 

UNIT SIZE

Hp

Option Code*

Rpm

Impeller Dia.

Pump Curve

Option Code*

Rpm

Impeller Dia.

Pump Curve

 

 

 

 

(in.)

 

 

 

(in.)

 

 

5

1

3450

4.5

I

7

3450

4.5

II

090-160

7.5

2

3450

5

I

8

3450

5

II

10

3

3450

5.4

I

B

3450

5.4

II

 

 

15

4

3450

6.1

I

C

3450

6.1

II

*Option Code refers to the Hydronics Option (position 11) in the model number. See Fig. 1 for option identification.

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Contents Installation Instructions Place, Mount, and Rig the Unit A30-4401 AquaForce Chiller Model Number Designation30XA080 Air-Cooled Liquid Chiller Dimensions A30-4403 Right END View090 4404100 110A30-4405 30XA090-120 Air-Cooled Liquid Chiller with Pump Dimensions Front View 115.88 140160 115.64A30-4407 Back View30XA140,160 Air-Cooled Liquid Chiller with Pump Dimensions 2300 30XA180,200 Air-Cooled Liquid Chiller Dimensions A30-4174 A30-4409 220 46.17 171.42 240 46.23 170.83614 532 208 132 1500 4260 4798 4799 5221 8363 280 260300 A30-4177A30-4178 614 532 208 132 1900 5011 5747 5760 6184 9555350 325614 532 208 132 1900 6205 6941 6954 7378 10750 A30-4181 A30 4182Left END View Front View A30 450 500A30-4183 A30-418 A30-41 Back View Unit Mounting Weights Units with Mchx Condenser Coils 30XA090-120 30XA325-350 30XA080 30XA220-30030XA140,160 30XA400-500A30-4421 30XA090-120 30XA140,160Dual Pump Units English Unit Mounting Weights Units with Al/Cu Condenser Coils Cooler Side ED CBA K L M N O P Compressor Side FG HIJ 1273 2898 1160 972 2089 1271 662 1273 3106 1248 972 2089 1271 959 Unit Mounting Weights Units with Cu/CU Condenser Coils 30XA090-120 30XA0801394 3139 1280 1093 2330 1392 10,627 A30-4420 A30-4421 Do not use a forklift truck to move the unitsUnit 30XA Physical Data, 30XA080-500 EnglishRefrigerant Charge kg Ckt A/Ckt B/Ckt C Mchx Physical Data, 30XA080-500 SIA30-4427 Unit Rigging Label Detail 30XA080-200A30-4428 Unit Rigging Label Detail 30XA400-500 30XA Typical Piping and Wiring Units with Hydronic Package A30-4413 Cooler Option DimensionsA30-4418 A30-4417A30-4414 A30-4138PT Hydronic Pump Package A30-4415A30-4002 A30-3432 Thermal Flow SensorMinimum Maximum Nominal 30XA Minimum and Maximum Cooler Flow Rates30XA140-500 30XA080-120Detail a A30-3997A30-4412 A30-4411090-160 FTV-5 Pump Impeller Sizes30XA Rpm Impeller Dia30XA110 30XA090,10030XA120 30XA140A30-4437 A30-4436A30-4439 A30-44403450 RPM Page Make Electrical Connections NON-FUSED Disconnect Unit Voltage Number No Hydronic Package Unit Voltage Number Unit Voltage Number No Hydronic Package 460-60 414 506 10/6 115 575-60 518 633 380-60 342 418 Unit Voltage Number Unit Voltage Number No Hydronic Package 230-60 207 253 592.4 800 869.3 700 607.0 883.9 115 30XA140-500 Electrical Data, Dual Point High Ambient Option 460-60 414 506 10/6 115 575-60 518 633 380-60 342 418 230-60 207 253 383.8/256.9 600/350 660.8/436.2 450/300 115 Power and Control Connections Unit Cond Size Fans Compressor and Fan Electrical DataCCN Communication Bus Wiring Pump Electrical DataA30-4001 A30-4000 A30-3999Refrigerant Charge Page Copyright 2009 Carrier Corporation
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30XA080-500 specifications

The Carrier 30XA080-500 is a sophisticated air-cooled chiller designed for large commercial and industrial applications, renowned for its energy efficiency and reliability. This model is part of Carrier's extensive range of chillers, providing an optimal solution for space cooling needs while supporting sustainability goals.

One of the main features of the 30XA080-500 is its advanced scroll compressor technology. This design not only enhances the chiller's efficiency but also ensures quieter operation. The compressors operate with a high efficiency at partial loads, making the 30XA080-500 ideal for buildings with varying cooling demands. The unit also incorporates multiple compressors, allowing for enhanced reliability through redundancy; if one compressor fails, others can maintain performance.

The 30XA080-500 is equipped with high-performance evaporators and condensers which facilitate superior heat exchange. The unit features a fin-and-tube heat exchanger design, optimized for maximum surface area and minimal air resistance, thus enhancing overall performance. Moreover, the chiller is built with microchannel technology, which significantly reduces the refrigerant charge while improving efficiency through better heat transfer.

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