enclosure cooling

Enclosure Thermal Managementw w w . a u t o m a t i o n d i r e c t . c o m / e n c l o s u r e s EN-175

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AppendixBook 3

Terms andConditions

Prices as of April 16, 2014. Check Web site for most current prices.

Book 3 (14.1)

Get the heat outHow do you get the heat out of your enclosure and away fromthose critical components? There are three basic cooling methods.

Natural Convection CoolingIf the ambient temperature outside the enclosure is cooler than theinside of the enclosure, then the heat can be dissipated into theatmosphere by radiating it through the surface of the enclosureand through the use of louvers or grilles with filters.

Forced Convection CoolingIf you have clean and cool ambient air outside of the enclosure,then a simple forced-air system may be adequate. A system suchas a filter fan and the associated grille with the appropriate filtermay be an acceptable option.

Closed Loop CoolingA system that will keep the ambient air separate from the internalenclosure air is needed if the environment is harsh, there are wash-down requirements, heavy dust and debris or the presence ofairborne chemicals, and the ambient temperature is as high asor higher than the desired internal temperature. Air conditionersare an example of a closed loop system.

Enclosure CoolingYou need to cool downHeat inside an enclosure can decrease the life expectancy ofcontrolling units such as your PLC, HMI, AC drives and otheritems. Excessive heat can cause nuisance faults from your electricaland electronic components: for example, overloads tripping unex-pectedly. Heat will also change the expected performance of circuitbreakers and fuses, which can cause whole systems to shut downunexpectedly. So, if you have any electronic equipment or otherheat sensitive devices, you may need cooling.

What causes all that heat?There are basically two sources that can cause the enclosuresinternal temperature to rise above the ratings of the control equip-ment.

Internal SourcesThe same items that can be damaged by heat may also be thesource of the heat. These include items such as:

Power supplies Servos AC Drives/inverters Soft starters Transformers PLC systems Communication products HMI systems Battery back-up systems

External SourcesOther sources of heat that can cause the internal temperature ofyour enclosure to rise above a desired level involve the externalenviroment. These include items such as:

Industrial ovens Solar heat gain Foundry equipment Blast furnaces

Natural Convection Cooling

Forced Convection Cooling

Closed Loop Cooling

HOT

HOT

HOT

HOT

COLD

COLD

Enclosure Thermal Management 1 - 8 0 0 - 6 3 3 - 0 4 0 5EN-176Book 3 (14.1)

ThermalExpansionValve

Evaporator

Compressor

Condenser


Enclosure Cooling Selecting a Fan or Air ConditionerFan selectionTo select the proper size (CFM) fan for your forced air coolingsolution, you need to determine the amount of heat to beremoved (in watts) and determine the Delta T (Max. allowableinternal enclosure temperature F Max. outside ambienttemperatureF).CFM = Cubic Feet per MinuteP = Power to be dissipated in wattsCFM = (3.17 x Pwatts) / Delta T FDelta T = max. allowable internal enclosure temperature F max.

outside ambient temperature F

Air conditioner selectionTo select the proper size air conditioner, the worst-caseconditions should be considered, but take care not to choose anoversized unit.

There are two main factors in choosing an uninsulated metalNEMA rated enclosure located indoors:

Internal heat load Heat load transfer

Internal Heat LoadIInntteerrnnaall hheeaatt llooaadd is the heat generated by the componentsinside the enclosure. This can be determined by a few differentmethods. The preferred method is to add the maximum heatoutput specifications that the manufacturers list for all the equip-ment installed in the cabinet. This is typically given in Watts, souse the following conversion:BTU per Hour = Watts x 3.413EExxaammppllee:: The Watt-loss chart for the GS3 Drives shows that aGS3-2020 AC drive has a Watt-loss of 750 watts.BTU per Hour = 750 watts x 3.413BTU per Hour = 2559

Heat Load TransferHHeeaatt llooaadd ttrraannssffeerr is the heat lost (negative heat load transfer) orgained (positive heat load transfer) through the enclosure wallswith the surrounding ambient air. This can be calculated by thefollowing formula:Heat load transfer (BTU/H) = 1.25 x surface area (sq. ft. ) x (max. out-side ambient air (F) max. allowable internal enclosure temperatureair (F))Surface Area (sq. ft.) = 2 [(H x W) + (H x D) + (W x D)] / 144 sq. inches

Note: 1.25 is an industry standard constant for metal enclosures; 0.62 should be used for plastic enclosures.

Once you have determined your Internal Heat Load and theHeat Load Transfer, you can choose the proper size unit bycalculating the needed cooling capacity. Cooling capacity (BTU/H) = Internal Heat Load Heat Load Transfer

Fan Selection ExampleA NEMA 12 Hubbell Wiegmann N12302412 enclosure (30" high x 24" wide x 12" deep) contains a GS3-2020 AC drive(20 HP 230 volt) that has a maximum allowable operatingtemperature of 104F and is located in a warehouse that has amaximum outside ambient air temperature of 95F.

Power to be dissipated is stated in the specifications of the GS3-2020 and is found to be 750 watts, so P=750 watts

Delta T = Max. operating temperature for the GS3-2020 is 104F Max. ambient air temperature of 95FDelta T = 9FCFM = (3.17 x 750 watts) / 9FCFM = 264Choose a Hubbell Wiegmann WPF60-115BK filter fan kit thatprovides 295 CFM with exhaust kit WPFA50-60BK

Air Conditioner Selection ExampleA NEMA 12 Hubbell Wiegmann N12302412 enclosure(30" high x 24" wide x 12" deep) contains a GS3-4030 AC drive30 HP 460 volt) that has a maximum allowable operating temperature of 104F and is located in a warehouse that has amaximum outside ambient air temperature of 115F.

Power to be dissipated is stated in the specifications of the GS3-4030 and is found to be 1290 watts.

Internal heat load:BTU per Hour = 1290 watts x 3.413BTU per Hour = 4403 BTU/HHeat load transfer:Heat load transfer (BTU/H) = 1.25 x 19 sq. ft. x (115F 104F)Heat load transfer (BTU/H) = 261.25 BTU/HCooling capacity:Cooling capacity (BTU/H) = 4403 BTU/H + 261.25 BTU/HCooling capacity (BTU/H) = 4664.25 BTU/HIn this example, you are able to determine that a 5000 BTU/Hunit is needed. Select a TA10-050-16-12 Stratus air conditioner.


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Book 3 (14.1)

Enclosure Cooling Selecting a Heat Exchanger

Heat exchanger selection To select the proper size heat exchanger, the worst-case condi-tions should be considered. For a heat exchanger to work, theambient air temperature must be lower than the desired internalenclosure air temperature.

There are three main factors in choosing a heat exchanger foran uninsulated metal NEMA rated enclosure located indoors:

Internal heat load Delta T Heat load transfer

Internal Heat LoadInternal heat load is the heat generated by the componentsinside the enclosure. This can be determined by a few differentmethods. The preferred method is to add the maximum heatoutput specifications that the manufacturers list for all the equipment installed in the cabinet. This is typically given inWatts.

Delta T (T)Delta T = maximum allowable internal enclosure temperature F maximum outside ambient temperature F.

Heat Load TransferHeat load transfer is the heat lost (negative heat load transfer) orgained (positive heat load transfer) through the enclosure wallswith the surrounding ambient air. This can be calculated by thefollowing formulas:

Surface Area (sq. ft.) = 2 [(H x W) + (H x D) + (W x D)] / (144sq. inches/sq. ft.)

Note: Only include exposed surfaces of enclosue in calcula-tions. Exclude surfaces such as a surface mounted to a wall.

Heat Load Transfer (W/F) = 0.22 W/F sq. ft. x surface area

Note: Use 0.22 Watts/F sq. ft. for painted steel and non-metallic enclosures. Use .10 Watts/F sq. ft. for stainless steeland bare aluminum enclosures.

Cooling CapacityOnce you have determined your Internal Heat Load, the HeatLoad Transfer and the Delta T, you can choose the proper sizeunit by calculating the needed cooling capacity.

Cooling Capacity (W/F) = Internal Heat Load / T - Heat LoadTransfer

Heat Exchanger Selection ExampleA NEMA 12 Hubbell Wiegmann N12302412 enclosure (30"high x 24" wide x 12" deep) contains a GS3-4010 AC drive 10HP 460 volt) that has a maximum allowable operating tempera-ture of 104F and is located in a warehouse that has a maximumoutside ambient air temperature of 90F.

Power to be dissipated is stated in the specifications of the GS3-4010 and is found to be 345 watts.

Internal heat load:Internal Heat Load = 345 Watts

Delta T:T (F) 104F 90F = 14F

Heat load transfer:

Surface Area (ft.2) = 2 [(30 x 24) + (30 x 12) + (24 x 12)] / 144 sq. inches= 19 ft.2

Heat Load Transfer = 0.22 x 19 ft2 = 4.2 Watts/F

Cooling capacity:Cooling Capacity = 345 Watts/14F - 4.2 Watts/F = 20.4 Watts/F

In this example, you are able to determine that a Stratus heatexchanger, with a capacity of at least 20.4 Watts/F is needed,such as a TE30-030-17-04.

*This selection procedure applies to metal and non-metal, unin-sulated, sealed enclosures in indoor locations. This selectionprocedure gives the minimum required size; be careful not toundersize when purchasing.


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Book 3 (14.1)

Air Conditioners For NEMA 12Enclosures

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stratustmthermal management


ApplicationsDesigned to maintain the temperatureinside an electrical enclosure at or belowa safe level for the enclosed equipment,while maintaining a closed loop environ-ment inside the enclosure to keep outcontaminates that can be in the ambientair. Can be used in such environments as steel, food processing,petro-chemical, cement, paper/pulp andplastics industries.

Construction Free-standing rigid chassis for easy installation and maintenance

Fabricated from 16-gauge cold rolled steel ANSI-61 gray polyester powder coatinginside and out

Pre-cut mounting gasket included, to befield installed

All mounting hardware, full-size templateand instruction manual included

Power input terminal block on all models

Features Digital LED temperature controller withvisible alarm features and 14.2 mm (0.55)numbers

Pre-wired for external alarm monitoringconnections (22 AWG three-conductorcable, 7 ft. long)

CFC-free refrigerant Active condensate management system Thermal expansion valve for maximumefficiency over wide range of temperatures and loads

Fits 12 inch deep enclosures that havesmooth/flat sides. Check enclosure dimen-sions/specifications before ordering.

Anti short-cycle compressor protection High and low refrigerant cut-outs withfault indication

Highly energy-efficient compressors UL/cUL listed

Listings UL File: SA33404 UL 50, Type 12 Made in USA

Part Number Price BTU/Hour Voltage/Hz RunningAmpsWeight with/without Packaging

(lbs)Max. Ambient

Temp Frame Size

TA10-010-16-12 1000

120/60 3.44 72/54

125F (51.67C)

1TA10-010-26-12 230/60 2.67 72/54

TA10-015-16-12 1500

120/60 3.89 72/54

TA10-015-26-12 230/60 2.67 72/54

TA10-020-16-12 2000

120/60 5.15 87/69

2

TA10-020-26-12 230/60 3.07 87/69

TA10-020-46-12 480/60 1.51 113/95

TA10-040-16-12 3000 - 4000

120/60 3.76 88/70

TA10-040-26-12 230/60 3.07 88/70

TA10-040-46-12 480/60 0.93 114/96

TA10-050-16-12 5000

120/60 7.26 107/89

3

TA10-050-26-12 230/60 3.76 107/89

TA10-050-46-12 480/60 1.44 150/132

TA10-060-16-12 6000 - 8000

120/60 7.83 114/96

TA10-060-26-12 230/60 4.80 114/96

TA10-060-46-12 480/60 1.80 157/39

TA10-060-26-12 shown

* Voltage variation no greater than 10% from nameplate rating and Frequency variation no greater than 3Hz from nameplaterating.1-800-633-0405 www.automationdirect.com

Keep it simple, pass along the value.Saving you money every day since 1994 . . .We were originally founded as PLCDirect in 1994 and have grown from atiny PLC company to one of the best value choices in the industry.

As the first industrial controls company to successfully use a telephone supporteddirect sales catalog for PLC products, we learned that the way its always beendone approach is not necessarily the most efficient way. So we worked smarterto develop in-house processes that maximized productivity to keep costs low. Then we passed those savings on to our customers.

In 1999, we changed our name to AutomationDirect.com, and brought thatpass along the value philosophy online. We have been serving tens ofthousands of satisfied customers ever since.

Whether the economy is up or down, we are prepared to serve ourcustomers efficiently, with better service and value than traditional suppliers.

. . . and always #1 rated service for FREEOEMs spoke, and they spoke our name 11 years in a row! The ReadersChoice survey hosted by Control Design magazine aims to identify the best products and service in the industry. Results for every year going back to2001 indicate we consistently provide top-notch support to our customers inseveral product categories.

And weve been voted tops in service by several other independent industrysources as well.

AutomationDirect HQ and mega-warehouse, just north of Atlanta, GA USA



Air Conditioners For NEMA 4Enclosures

ApplicationsDesigned to maintain the temperatureinside an electrical enclosure at or below asafe level for the enclosed equipment,while maintaining a closed loop environ-ment inside the enclosure to keep outcontaminates that can be in the ambientair. Can be used in such environments as steel, food processing,petro-chemical, cement, paper/pulp andplastics industries.


Fabricated from 16-gauge cold rolled steel ANSI-61 gray polyester powder coatinginside and out

Pre-cut mounting gasket installed forNEMA/UL type rating on all units





CFC-free refrigerant Protective coated condenser coils for corrosion resistance

Active condensate management system Thermal expansion valve for maximumefficiency over wide range of temperatures and loads

Fits 12-inch deep enclosures that havesmooth/flat sides. Check enclosure dimen-sions/specifications before ordering.



Listings UL File: SA33404 UL 50, Type 4 Made in USA

Part Number Price BTU/Hour Voltage/Hz RunningAmpsWeight with/without

Packaging (lbs)Max. Ambient

Temp Frame Size

TA10-010-16-04 1000

120/60 3.44 72/54

125F (51.67C)

1TA10-010-26-04 230/60 2.67 72/54TA10-015-16-04

1500120/60 3.89 72/54

TA10-015-26-04 230/60 2.67 72/54TA10-020-16-04

2000

120/60 5.15 87/69

2

TA10-020-26-04 230/60 3.07 87/69TA10-020-46-04 480/60 1.51 113/95TA10-040-16-04

3000 - 4000

120/60 3.76 88/70

TA10-040-26-04 230/60 3.07 88/70TA10-040-46-04 480/60 0.93 114/96TA10-050-16-04

5000

120/60 7.26 107/89

3

TA10-050-26-04 230/60 3.76 107/89TA10-050-46-04 480/60 1.44 150/32TA10-060-16-04

6000 - 8000

120/60 7.83 114/96

TA10-060-26-04 230/60 4.80 114/96TA10-060-46-04 480/60 1.80 157/139

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TA10-060-26-04 shown

* Voltage variation no greater than 10% from nameplate rating and Frequency variation no greater than 3Hz from nameplaterating.


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Terms andConditions


Book 3 (14.1)

ApplicationsDesigned to maintain the temperatureinside an electrical enclosure at or below asafe level for the enclosed equipment,while maintaining a closed loop environ-ment inside the enclosure to keep outcontaminates that can be in the ambientair. Can be used in such environments as steel, food processing,petro-chemical, cement, paper/pulp andplastics industries.


Fabricated from 16-gauge 304 stainlesssteel

Pre-cut mounting gasket installed forNEMA/UL type rating on all units





CFC-free refrigerant Protective coated condenser coils for corrosion resistance

Active condensate management system Thermal expansion valve for maximumefficiency over wide range of temperatures and loads

Fits 12-inch deep enclosures that havesmooth/flat sides. Check enclosure dimen-sions/specifications before ordering.



Listings UL File: SA33404 UL 50, Type 4X Made in USA

Air Conditioners For NEMA 4XEnclosures

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Part Number Price BTU/Hour Voltage/Hz RunningAmpsWeight with/without

Packaging (lbs)Max. Ambient

Temp Frame Size

TA10-010-16-4X 1000

120/60 3.44 72/54

125F (51.67C)

1TA10-010-26-4X 230/60 2.67 72/54

TA10-015-16-4X 1500

120/60 3.89 72/54

TA10-015-26-4X 230/60 2.67 72/54

TA10-020-16-4X 2000

120/60 5.15 87/69

2

TA10-020-26-4X 230/60 3.07 87/69

TA10-020-46-4X 480/60 1.51 113/95

TA10-040-16-4X 3000 - 4000

120/60 3.76 88/70

TA10-040-26-4X 230/60 3.07 88/70

TA10-040-46-4X 480/60 0.93 114/96

TA10-050-16-4X 5000

120/60 7.26 107/89

3

TA10-050-26-4X 230/60 3.76 107/89

TA10-050-46-4X 480/60 1.44 150/132

TA10-060-16-4X 6000 - 8000

120/60 7.83 114/96

TA10-060-26-4X 230/60 4.80 114/96

TA10-060-46-4X 480/60 1.80 157/139

TA10-060-16-4X shown



Air Conditioners SpecificationsSt

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Stratus Industrial Air Conditioners General SpecificationsBTU/H 1000 1500 2000 3000 - 4000 5000 6000 - 800095/95 BTU/H Rating 1366 1722 4438 4681 4438 4713 4990 4713 4400 5460 5460 7565 8215 8215

Rated Voltage (VAC) 120 230 120 230 120 230 480 120 230 480 120 230 480 120 230 480Frequency (Hz) 60

Starting Current (4.5 xrunning Amps) 22.69 13.77 22.69 13.77 23.42 13.65 5.86 16.42 13.41 4.11 23.42 19.15 9.18 42.41 21.15 10.13

Running Current (Amps) 3.44 2.67 3.89 2.67 5.15 3.07 1.51 3.76 3.07 0.93 7.26 3.76 1.44 7.83 4.80 1.80

Recommended FuseSize/Time Delay (Amps) 12 7 12 7 12 7 3 8 6 2 12 10 5 25 12 5

Connection Type Spring cage terminal block 8-24 AWG Spring cage terminal block 6-16 AWG

Ambient TemperatureRange 50 to 125F (10 to 52C)

Temp Control Range Programmable digital controller, with 3-digit, 0.55 high, RED LED displayTemp Control Range(Adjustable) 70 to 95F (21 to 35C)

Refrigerant Type R134a R422dRefrigerant Amount (oz) 12 10.25 9.75 10.25 9.75 10.25 12.5 18Refrigerant Flow Control Thermal expansion valveCondensate Management Active condensate evaporation system with safety overflow; barbed fitting for 3/8 ID tubingCompressor Type Reciprocating RotaryHousing Material/Finish NEMA 4 and NEMA 12 units: ANSI 61 gray polyester powder-coated steel housing. NEMA 4x units: 304 Stainless SteelAtmosphere No corrosive gases or liquidsAgency Approvals UL File: SA33404

1000

1500

2000

acit

y (B

TU/H

) TA10-010-16-xx

105

Enclosure air Temperature

(oF)

0

500

1000

1500

2000

85 95 105 115 125Cool

ing

Capa

city

(BTU

/H)

Ambient Temperature (oF)

TA10-010-16-xx

105

95

85


(oF)

0

500

1000

1500

2000

85 95 105 115 125

C ool

ing

Capa

city

(BTU

/H)

TA10-010-26-xx

105

95

85


(oF)

0

500

1000

1500

2000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-010-26-xx

105

95

85


(oF)

0

500

1000

1500

2000

2500

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)

TA10-015-16-xx

105

95

85


(oF)

0

500

1000

1500

2000

2500

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-015-16-xx

105

95

85


(oF)

0

500

1000

1500

2000

2500

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)

TA10-015-26-xx

105

95

85


(oF)

0

500

1000

1500

2000

2500

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-015-26-xx

105

95

85


(oF)

Air Conditioners Performance Curves

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* Voltage variation no greater than 10% from nameplate rating and Frequency variation no greater than 3Hz from nameplaterating.


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Book 3 (14.1)


60008000

1000012000

acity

(BTU

/H)

TA10-060-26-xx

105


(oF)

02000400060008000

1000012000

85 95 105 115 125Cool

ing

Capa

city

(BTU

/H)


TA10-060-26-xx

105

95

85


(oF)

TA10-060-46-xx

200030004000500060007000

paci

ty (B

TU/H

)

TA10-020-16-xx

105

95


(oF)

01000200030004000500060007000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-020-16-xx

105

95

85


(oF)

TA10-020-46-xx

200030004000500060007000

paci

ty (B

TU/H

)

TA10-020-26-xx

105

95


(oF)

01000200030004000500060007000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-020-26-xx

105

95

85


(oF)

200030004000500060007000

apac

ity (B

TU/H

) TA10-040-16-xx

105

95


(oF)

01000200030004000500060007000

85 95 105 115 125Cool

ing

Capa

city

(BTU

/H)


TA10-040-16-xx

105

95

85


(oF)

TA10-040-46-xx

200030004000500060007000

paci

ty (B

TU/H

)TA10-040-26-xx

105

95


(oF)

Tamb 105 95 8585 6846.067823 6249.77757 4989.57651995 5626.84892 4989.576519 4703.726037105 5304.114505 3999.857645 3972.194695115 4034.692471 2934.321797 2776.540527125 2973.254837 1997.879715 1810.386388

01000200030004000500060007000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-040-26-xx

105

95

85


(oF)

0

2000

4000

6000

8000

85 95 105 115 125

o lin

g Ca

paci

ty (B

TU/H

)

TA10-050-16-xx

105

95

85


(oF)

0

2000

4000

6000

8000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-050-16-xx

105

95

85


(oF)

Air Conditioners Performance CurvesSt

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0

2000

4000

6000

8000

85 95 105 115 125

o lin

g Ca

paci

ty (B

TU/H

)

TA10-050-16-xx

105

95

85


(oF)

0

2000

4000

6000

8000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-050-26-xx

105

95

85


(oF)

TA10-050-46-xx

02000400060008000

1000012000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)

A bi T (oF)

TA10-060-16-xx

105

95

85


(oF)

02000400060008000

1000012000

85 95 105 115 125

Cool

ing

Capa

city

(BTU

/H)


TA10-060-16-xx

105

95

85


(oF)


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Terms andConditions


Book 3 (14.1)

Air To Air Heat ExchangersSt

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Consider a BetterSolution: Air to Air HeatExchanger

Always closed loop Low cost Easier to mount on only one side of yourenclosure

Energy efficient; uses no more power thana filtered fan system

Filter-free; no diminished cooling capacity

ApplicationsA closed loop cooling system whichemploys the heat pipe principle toexchange heat from an electrical enclosure to the outside.

Construction Heat pipe technology Closed loop design

Listings UL File: SA34086 Made in USA

Features All units are available in NEMA Type 4 and4X

Available in 120 VAC and 24 VDC Motors have a sealed overload protector Finned evaporator and condenser sections provide a closed loop

Coil systems use aluminum end plates andbaffles which improve conduction andreduce corrosion for longer life.

UL/cUL listed

The Air to Air Heat Exchanger is a closed loopcooling system which employs the heat pipe prin-ciple to exchange heat from an electrical enclosureto the outside. Where ambient temperatures are suit-able for heat pipes, they are the most efficientmethod of cooling as the waste heat is the enginewhich drives the system. The only power requirementis to operate two circulating fans or blowers.

Heat pipes have a liquid refrigerant under a partialvacuum inside sealed tubes. They operate with aphase change process which is much like that ofmechanical air conditioning, but without thecompressor. Each heat pipe has an evaporatorsection and a condenser section which are sepa-rated by a permanent baffle so as to provide aclosed loop. The bottom of each heat pipe is incontact with heated air from the electrical enclosure.When the enclosure air reaches approximately 75degrees F., the refrigerant changes to vapor phase(boils) and the vapor (steam) rises to the top of thetube which is in contact with cooler outside (ambient)air.

When the outside air temperature is lower than the enclosure temperature, the refrigerant vapor gives up heat to the outside air andreturns to the liquid phase. It then falls to the bottom and repeats the cycle endlessly so long as there is a negative temperature differ-ential between the enclosure and outside. Heat pipes will not operate in reverse cycle so heat cannot be transferred from the ambientto the interior of the enclosure. Although the operation is self limiting, thermostatic control can be used to shut off the fans when notneeded.

The Stratus design has a top-to-bottom enclosure air flow pattern with maximum separation of the inlet and outlet. This design pullsthe hottest air from the top of the enclosure and returns the cooled air from the bottom of the heat pipe to the enclosure. The air flowon the ambient side is bottom in, top out, so that the hotter discharge air moves up and away rather than being recirculated.

The units use aluminum end plates and baffles which improve conduction and reduce corrosion for longer life. The center aluminumbaffle, which is swaged into the heat pipe coil, provides an air tight seal between the two air systems.

Air to Air Heat Exchange

Tall, compact, and deepbody styles shown

Enclosure Thermal Management 1 - 8 0 0 - 6 3 3 - 0 4 0 5EN-190


Book 3 (14.1)

In this image, a standardinstallation shows where thedirt and particulate will enterthe enclosure and be pulledin by the fans on your drivesand devices. Filters or not,contamination is invited inby this open loop approach.

In this image, a standardinstallation demonstratesthe closed loop conditionmaintained by the Air to AirHeat Exchanger. Cool airinlet and outlet vents arecompletely covered by theheat exchanger. This pro-vides NEMA type 4 or 4X.

Air To Air Heat ExchangersSpecifications

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Stratus Air to Air Heat Exchangers General Specifications

Part Number

TE20-015-17-04

TE20-015-17-4X

TE20-015-24D

-04

TE20-015-24D

-4X

TE30-030-17-04

TE30-030-17-4X

TE30-030-24D

-04

TE30-030-24D

-4X

TE40-050-17-04

TE40-050-17-4X

TE40-050-24D

-04

TE40-050-24D

-4X

Price

Operating Voltage Range (V) 10%Inrush Current (Start UpCurrent) (A) 1.92 3.90 1.92 3.90 2.59 9.70

Loading Current (RunningCurrent) (A) 0.37 0.80 0.37 0.80 0.47 1.94

SCCR (Short Circuit CurrentRating) (A) Refer to Footnote

1

Recommended CircuitProtection Device Rating (A) 1.5 2.5 1.5 2.5 2 6

VA Rating (W) 42 20 42 20 56 47

Refrigerant Type (oz) Methanol(0.41)Methanol(0.41)

Methanol(0.81)

Methanol(1.22)

Watts/C (F) 22 (12) 44 (24) 71.6 (40)

Free Air Flow (CFM) 131 127 131 127 211 235Weight Without Packaging(lbs) 16 19 32

Body Style compact deep tall

Material Type

2CRS withANSI 61gray

powdercoat

3StainlessSteel


powdercoat

3StainlessSteel


powdercoat

3StainlessSteel


powdercoat

3StainlessSteel


powdercoat

3StainlessSteel


powdercoat

3Stainless Steel

Voltage/Hz 120 VAC 50/60 24 VDC 120 VAC 50/60 24 VDC 120 VAC 50/60 24 VDC

Maximum AmbientTemperature 160F (71.1C)

Agency Approval UL File: SA34086

1 SCCR rating is based on the SCCR rating for the circuit protection device installed in the panel / enclosure per UL50 and UL508a to protectthe AC unit. Typically 10KA for Fast Acting Fuses.2 Cold rolled steel with ANSI-61 gray polyester powder coating inside and out.3 Fabricated from 16-gauge 304 stainless steel.


CompanyInformation

Terminal Blocks


WiringAccessories




M12 JunctionBlocks

Wiring Duct

Cable Ties

Wire

Flexible Cord


Data Cables


Circuit Protection

Enclosures


Tools

Safety Products

AppendixBook 3

Terms andConditions


Book 3 (14.1)

ApplicationsFilter fans provide anoptimum climate in enclo-sures. The interior tempera-ture of enclosures isreduced by channelingcooler filtered outside airinto the enclosure, thusexpelling heated internalair. The resulting air flowprevents formation of local-

ized heat pockets and protects electronic components from over-heating.

Outdoor filter fans are used in outdoor enclosures where warmair must be dissipated. To clean and exchange the filter mat, youopen the lockable door of the outdoor hood, eliminating theneed to allow interior access to the enclosure. IP55 protectiontype is achieved due to the special design of the hood and theuse of fine filter mats.

Features Easy filter change Outer door lock for outdoor models Impact resistantWeather/UV resistant UL 94V-0 (indoor)/UL94H-B (outdoor) No-screw installation - except outdoor models Low noise 120 VAC and 24 VDC models available Service life - 50,000 hrs@77F (25C) + 65%RH Connection type - 12 to 69 CFM - 2 wires w/case clamps, AWG 14,length 4/136 to 373 CFM - 3 pole terminal, AWG 14, clamping torque0.8 Nm

Airflow direction easily switched by reversing the axial fan (excepton models 018040-01 and 018050-01)

Includes self-adhesive gasket pre-installed on frame Optional mounting screws for additional support

StandardsAll models except outdoor: CE, RoHS, IP55, ULType 12 when using supplied filter. For use with NEMA 1 and NEMA12 enclosures only.UL #: E234324Note: Using fine filter mat F5 reduces the airflow. (See Stego AirVolume and Pressure Data, later in this section.)

Filter Fan Kits

PartNumber Price

Amps(mA)

RatedVoltage

PowerConsumption

(60 Hz for 120Vmodels)

FreeFlow AirDelivery(CFM)*

Air Deliverywith

Exhaust(CFM)**

Max.Static

Pressure(Pa)*

OperatingTemp.

(Max/MinF/C)

FilterDensity(g/m2)

FilteringLevel

SoundLevel(dB)

RequiredCutoutSizes

Filter Fans018000-02 90 24 VDC 2.2W 12 9 19

158/14 F(70/-10C)

350 94%

31 3.82 x 3.82 inch(97.03mm x97.03mm)018000-01 160 120 VAC 13W 14 11 18 31

018010-02 210 24 VDC 5W 32 25 32 40 4.92 x 4.92 inch(124.97mm x124.97mm)018010-01 180 120 VAC 15W 37 28 30 40

018020-02 210 24 VDC 5W 60 40 23 39

6.93 x 6.93 inch(176.02mm x176.02mm)

018020-01 180 120 VAC 15W 69 46 27 39

018040-01 470 120 VAC 39W 136 84 60140/-13F(60/-25C) 52

018030-03 840 24 VDC 20W 176 135 23 158/14 F(70/-10C)

53

9.84 x 9.84 inch(249.94mm x249.94mm)

018030-01 700 120 VAC 60W 202 156 27 53

018050-01 780 120 VAC 85W 373 203 85 140/-13F(60/-25C) 52

Outdoor Filter Fans (Rain Hoods)018210-04 210 24 VDC 5W 12 11.8 48 158/14 F

(70/-10C)360 98% 40

4.92 x 4.92 inch(124.97mm x124.97mm)018210-02 180 120 VAC 15W 14 14 54

Dimensions in inches (millimeters)

018000-02

*Fan with filter and louver**Fan with filter, louver, exhaust filter, and grille.

Enclosure Thermal Management 1 - 8 0 0 - 6 3 3 - 0 4 0 5EN-202


Book 3 (14.1)

Applications Most innovative technology for fancooling and pressurizing of industrialenclosures.

Provides a high quality, economicalmethod of cooling enclosures

Filtered passive ventilation can beprovided by an exhaust filter for eitherconvection cooling or in combinationwith a fan in forced air cooling

Slim line design allows grille to protrudefrom enclosure surface less than onequarter inch

Maintains aesthetics of enclosure

Features All models are 115V with an expected service life of 30,000 hours

High-performance fan motors andfinger guards

Polycarbonate fire retardant plasticgrilles, UL94-VO

Durable, reusable filter mat included Patented Click and Fit system allowsfor rapid filter fan and exhaust filter installation without screws (This time-saving feature cuts installationtime by up to 30 minutes when comparedto traditional box fan packages)

Cutout template provided with every unit Filter fan or exhaust filter simply snapsinto cutout opening

Connector type: WPF10 Series 2 has12-inch wires. WPF20-WPF60 Series has terminal strip.

Standards cUL Recognized/CSA fan motor NEMA 1 (NEMA 12 with optionalWPFG series gasket)

IP43 (IP54 with optional WPFGSeries gasket)

Accessories Gaskets (WPFG Series)recommendedif installing on enclosure withtextured finish

Replacement Filters(WPFM Series)

Filter Fan Kits

Part Number PriceAmps at50/60

Hz

RatedVoltage

PowerConsumptionat 50/60 Hz

FreeFlow AirDelivery(CFM)1

AirDelivery

withExhaust(CFM)1

Max.StaticPress.(PA)

AmbientTemp.

Degree FMax/Min

FilterDensity(G/M2)

FilteringLevel

SoundLevel(dB)

RequiredCutoutSizes

WPF10-115BK 0.15/0.15 115V 12/12 Watts 16 10 29 140/14 150 67% 39 3.62x3.62(92x92)

WPF20-115BK 0.25/0.25 115V 19/19 Watts 38 28 69 122/14 350 83% 49 4.92x4.92(125x125)

WPF25-115BK 0.25/0.25 115V 18/18 Watts 89 62 57 122/14 350 83% 53 8.78x8.78(223x223)

WPF30-115BK 0.5/0.5 115V 43/44 Watts 169 142 89 122/14 350 83% 55 8.78x8.78(223x223)

WPF50-115BK2 0.6/0.7 115V 63/76 Watts 324 249 205 122/14 350 83% 69 11.46x11.46(291x291)

WPF60-115BK2 1.2/1.6 115V 122/173 Watts 410 295 225 122/14 350 83% 71 11.46x11.46(291x291)Note 1: For operation at 50Hz, reduce CFM by 15%. Note 2: Intake fan use onlyDimensions in inches (millimeters)


Applications Compressed air cooling is used where conventional enclosure cooling byair conditioners or heat exchangers is notpossible(Example: Small to medium size enclosures, nonmetallic enclosures, andareas where the size of cooling devices isrestricted)

Features Suitable for harsh environments Small physical size Creates cool air without refrigerants (no CFCs, HCFCs)

Exceptionally reliable - no moving partsand virtually no maintenance

Requirements Uses clean, dry, oil-free compressed air(100 PSIG / 70 degrees F or below)required to achieve published BTU/hrratings. Lower pressures and higher temperatures will reduce BTU/Hr ratings.

A 5-micron water and particulate removalfilter must be installed prior to operatingany vortex cooler (included in kits).

An oil removal filter can be installedbetween the 5 micron filter and theVortex Cooler if oil is present in the compressed air line.

Mounting holes NEMA 12 kits: (1) 1-3/32 (28mm) or 3/4knockout hole for cooling tube and (1)11/16 hole for thermostat

NEMA 4 and 4X kits: (1) 1-15/16 (49mm)or 1-1/2 knockout hole for cooling tubeand (2) #8 holes for thermostat

Kit includes thefollowing:

Vortex cooling tube Solenoid valve 120V / 60Hz - 110V / 50Hz Filter: 5-micron water and particulateremoval

Ducting kit

Thermostat

Standards UL Listed NEMA 12, NEMA 4 or NEMA 4X

How vortex coolerscreate cold airVortex coolers are powered by a vortextube - a unique device that creates avortex from compressed air and separatesit into hot and cold airstreams. Hereshow it works: The vortex tubes cylindricalgenerator causes the input compressedair to rotate, reaching speeds up to1,000,000 rpm as it is forced down theinner walls of the hot longer end of thevortex tube. At the end of the hot tube, asmall portion of this air exits through aneedle valve as hot air exhaust. Theremaining air is forced back through thecenter of the incoming air stream at aslower speed. The heat in the slowermoving air is transferred to the fastermoving incoming air. This super-cooledair flows through the center of the gener-ator and exits through the cold air exhaustport.

W750400 W740900, W7901500 W7971700, W797SS1700

NEMA 4/4X NEMA 12

Vortex Coolers

PartNumber Price

CapacityBTU/H

CapacityKCAL/H

AirConsump-tion SCFM

AirConsump-tion SLPM

AirConsumptionThermostat

(Factory Set)

TubeSurfaceTemp at

BTU

ThermostatMounting

NEMAType

ULType

CoolingTube

Material

W750400 400 101 8 227 90F 2 150F External 12 12 AluminumW740900 900 225 15 425 90F 2 150F External 12 12 AluminumW7901500 1500 378 25 708 90F 2 150F External 12 12 AluminumW7971700 1700 425 25 708 90F 2 150F Internal 4 4 AluminumW797SS1700 1700 425 25 708 90F 2 150F Internal 4X 4X Stainless St.


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