THE NEW COOLING GENERATION - Steven Engineering · THE NEW COOLING GENERATION R TOPTHERM ......

T H E N E WC O O L I N GG E N E R A T I O N

R

TOPTHERMTHERMAL MANAGEMENTPRODUCTS

● TOP DESIGN

● TOP PERFORMANCE

● TOP TECHNOLOGY

I N D E X

3

Cool versus heat. Clean versus dusty air.

Heat and dust are significant risk factors for modern

electronics. Reliable cooling, therefore, is an immensely

important preventive measure to avoid costly production

downtimes. The inside enclosure temperature is held

constant at the desired level, independently of the ambient

conditions. With carefully separated and well-insulated

internal and external cooling chambers, dust penetration

into the enclosure is eliminated. Rittal has addressed these

common climate control obstacles with its most effective

solution yet!

R O O F M O U N T A I R C O N D I T I O N E R S 1 2 – 1 9

Useful cooling capacity1740 and 3680 BTU 145200 and 7270 BTU 1611,250 and 14,300 BTU 18

WA L L M O U N T A I R C O N D I T I O N E R S 2 0 – 2 9

Useful cooling capacity1090 and 2080 BTU 223600 and 5150 BTU 248000, 9390, 9220 BTU 2615,000 BTU 28

I N C O M P A R I S O N 3 0 – 3 3

The new generation – Benefits-at-a-glanceCross References

A C C E S S O R I E S 3 4 – 3 5

PE R F O R M A N C E D I A G R A M S 6 0 H Z 3 6 – 3 7

TE C H N I C A L I N F O R M A T I O N 3 8 – 3 9

580 52

0

392

795

692

20 25 30 35 4540

QK

.

Tu

1600

1400

1200

1000

800

600

400

200

Rittal TopTherm, a new generation of air conditioners,

defines new standards in performance:

● Top Design – aesthetically-pleasing looks.

● Top Performance – efficient generation, focused air

circulation.

● Top Technology – a new dimension in convenience,

reliability and flexibility.

4

TO P D E S I G N

Design follows function: Aesthetics to catch the eye.

The new Rittal TopTherm air conditioners are designed with

a unique blend of functionality and aesthetics. Elegant and

distinctive – this line showcases a new generation in

industrial design. A design that conveys efficiency and

performance strengths. Performance that keeps your

components cool and reliable – quite simply one step

ahead of the heat and dust. A new era has begun in

modern protection for sensitive electronics.

Irresistible:The new wallmount air condi-tioner integrates seamlessly into the enclosure.

Safety at the center of attention: Whether with Basic or Comfort controller, parameter maintenance is intuitive, locally or via remote monitoring.

Top design: Smart, consistent develop-ment.The shape and arrangement of the grilles have been opti-mized for maximum perform-ance. A new mounting sys-tem for the grilles provides for simple and convenient filter mat replacement.

Top quality: Guaranteeing protection for your electronics.All products in the Rittal TopTherm series are subjected to appropriate endurance and reliability testing, such as DIN 3168, UL 484 and UL 508 and EN 60 335.

6

TO P PE R F O R M A N C E

Cooling output – efficient generation, focused air

circulation.

These units feature even more efficient cooling outputs,

unrestricted installation options, modern analysis methods,

and flexible performance – not to mention long-term

investment value. And all of this adds up to increased

reliability for high-tech electronics and decreased process

downtime – thereby resulting in higher yield and profita-

bility for you.

The number one cause for costly production downtime is an excessive component temperature. The priority, therefore, is to discover and eliminate the hot spots.

Roofmount versions are perfect for every situation.The air intake for the external circuit is always from the front, with the outlets to the sides and rear. An outlet to the top is also possible as a special configu-ration. The internal air circula-tion is targeted and efficient: the warm air is removed cen-trally and the cooled air is sup-plied as necessary at the four corners. An air-ducting system permits targeted distributionof this cooling stream.

Easy installation.Identical installation cut-outs for various output ranges help to safeguard investments and permit easy retrofitting for different coding requirements.

Reduce costs.All three-phase units are suitable for both 400 V/50 Hz and 460 V/60 Hz. No expensive transformers are necessary.

Wallmount designs provide even cooling throughout!A “short-circuit” in the internal air circulation is avoided – even without baffles – due to the distance between air inlet and outlet.

Roofmount models

D1 D2 D3

BTU

1740368052007270

11,25014,300

Wallmount models

W1 W2 W3 W4 W5

BTU

1090 2080 36005150

800093209220

15,000

Rittal value-added service:Thermal analysis of enclosures and electronic housings using CFD simulation and infrared thermography.Your reliability is our concern!

8

TO P TE C H N O L O G Y

A new dimension in convenience, reliability and

flexibility.

Modern manufacturing plants demand the latest

technology. The TopTherm series offers two new controller

versions – Basic and Comfort – for maximum security in

control and monitoring. The installation options are simpler

and more versatile. The condensate management is

adapted to the enclosure design. And servicing is simple

and faster than ever before! Top technology with clear

advantages – ultimate performance and cost savings as

well.

Comfort controller

� Three voltage options: 115 V, 230 V, 400/460 V, 3~

� Master/slave function for up to 10 units, i. e. wherever a critical temperature arises, the unit concerned assumes the master function and automatically activates all other units

� Switching hysteresis: 5 K� System alarm, individually configurable for

2 floating fault signal contacts� Indication and storing of system messages� Optional expansion board with I2C

(permitting integration of remote monitoring systems, e. g. CMC), RS 232 and RS 485 interfaces

Basic controller

� Three voltage options: 115 V, 230 V, 400/460 V, 3~

� Integrated start-up delay and door-switch function

� LED indication of the operating status� Switching hysteresis: 5 K� Fault signal contact� Setpoint adjustable from outside via

potentiometer(setting range 68 °F – 131 °F/20 °C – 55 °C)

� Icing protection function� Monitoring of all motors� Phase monitoring for three-phase units

Wallmount air conditioners – practical and elegant.Three installation options: integrated (left in picture), partially integrated (center) or external mounting (right).

Condensate managementWallmount air conditioners with integrated condensate evapo-ration system are available asa special order.

Intelligent control!There are numerous features of the two controller versions – all topped off with even better system reliability. In fact, the important control electronics are well-protected and cooled in the inner circuit.

Service-friendly:

� Simple component replacement: clear layout, electronic connectors

� Fast filter replacement: clip-in for the grille panels

� Reduced storage costs� 4 filter sizes for all unit types

10

TO P P R O D U C T I O N

Ultimate quality, competitive pricing, maximum

efficiency and environmental-friendly design.

Rittal TopTherm – these new innovations were designed

with our customers’ needs in mind. In fact, the design is

based on consistent customer orientation, competent

development teams, a platform strategy on modular

principles, and the very latest production technologies.

Rittal TopTherm: Top quality from the technology leader

in climate control.

The Rittal climate control production center in Rennerod was designed to incorporate the very latest in production advancements. Rittal guarantees its high product quality through its own certified laboratories and DIN ISO 9001 certification for all production facilities.

Expert knowledge.Regular seminars and on-going training enable our staff to work at the highest levels of competence and expertise.

Air conditioning technology that sets industry standards.Decades of development know-how, alongside modern testing and research labora-tories, guarantee increased safety and reliability for your electronics.

Customer proximity.Local customer and technical support provide quick answers and solutions to your cooling needs.

Springfield, Ohio

12 Rittal System Climate Control/Air Conditioning Innovations 2002

Useful cooling capacity 1740 BTU/510 W 3680 BTU/1080 W

Dimensions (inches/mm) HWD

16.34/41523.43/59514.76/375

16.34/41523.43/59518.70/475

Voltage 115 V 230 V 115 V 230 V 400 V

Part No. SK with Basic controller 3382.110 3382.100 3383.110 3383.100 3383.140

Part No. SK with Comfort controller 3382.510 3382.500 3383.510 3383.500 3383.540

Page 14 14

cUL/UL recognizedCE conformity � � � � � � � � � �

≤Useful cooling capacity 7270 BTU/2130 W


16.34/41523.43/59518.70/475

Voltage 115 V 230 V 400 V

Part No. SK with Basic controller 3385.110 3385.100 3385.140

Part No. SK with Comfort controller 3385.510 3385.500 3385.540

Page 16

cUL/UL recognizedCE conformity � � � � � �

Roofmount air conditioners1740 BTU/510 Watt

Roofmountair conditioners 3680 BTU/1080 Watt

Roofmount air conditioners 7270 BTU/2130 Watt

Note: All cooling capacities are calculated at 60 Hz. Conversions: °F = (1.8 x °C) + 32°; BTU/Hr = 3.413 x Watts

R O O F M O U N T A I R C O N D I T I O N E R S

13Rittal System Climate Control/Air Conditioning Innovations 2002

Overview

5200 BTU/1520 W

16.34/41523.43/59518.70/475

115 V 230 V 400 V

3384.110 3384.100 3384.140

3384.510 3384.500 3384.540

16

� � � � � �

11,250 BTU/3300 W 14,300 BTU/4200 W

18.31/46531.30/79522.83/580

18.31/46531.30/79522.83/580

400 V, 50 Hz/460 V, 60 Hz 400 V, 50 Hz/460 V, 60 Hz

3386.140 3387.140

3386.540 3387.540

18 18

� � � �

Roofmountair conditioners 5200 BTU/1520 Watt

Roofmountair conditioners 11,250 BTU/3300 Watt

Maximum flexibilityCompletely redesigned interior air circuit. The warm air in the enclosure is removed centrally by the air conditioner. The cold air is then introduced at up to four outlets arranged at the side corners. This optimizes cold air circulation within the enclosure.

Many possibilities for air routingVariable external air circuit. The air intake is at the front of the air conditioners, while the warm air exhausts for the external circuit are to the sides (right and left) and to the rear of the unit. The customer is therefore totally unrestricted in a choice of site or in the decision to mount a series of air conditioners on a bayed enclosure system against the wall. For bayed enclosure suites located against a wall, roofmount air conditioners with warm air exhaust through the top surface are available as a special order.

Roofmountair conditioners 14,300 BTU/4200 Watt


The enormous demands placed on the reliability and efficiency of machines and plants in industrial and IT environments necessitate the same level of functionality, flexibility and modern industrial design from an enclosure air conditioner. These newly designed units not only satisfy the requirements for protection of sensitive electronics, but also offer a high degree of flexibility with regard to targeted cold air distribution for enclosure climate control.

Technical description:� SK 3382. . . ., useful cooling output

1740 BTU/510 W to DIN 3168 L35 L35.� SK 3383. . . ., useful cooling output

3680 BTU/1080 W to DIN 3168 L35 L35.� Basic version: Temperature control

through internal electronics(Part No. . . . . .100 / .110 / .140).

� Comfort version: Temperature control and system monitoring through micro-processor control of the unit(Part No. . . . . .500 / .510 / .540).

� Condensate warning with Comfort controller.

� Innovative cold air circulation concept for the inner circuit, providing for targeted climate control that can be optimized for individual enclosure instal-lations.

� Variable external circuit for problem-free interconnection and for enclosure loca-tions against walls.

� Simple mounting due to a new mount-ing system and symmetrical installation cutouts.

Performance diagram (DIN 3168) (50 Hz)

Tu = Ambient temperature (°C)QK = Continuous cooling capacity (W)Ti = Internal enclosure temperature (°C)

20 25 30 35 4540 50 5520253035404550

55QK

.

Tu

Ti

1050

900

750

600

450

300

150

0

.



20 25 30 35 4540 50 55

5550454035302520

QK

.

Tu

Ti

2000

1750

1500

1250

1000

750

500

250

.



Rated voltage Volt/Hz 230, 50/60 1151), 50/60 230, 50/60 1151), 50/60 4001), 2~, 50/60

Dimensionsinches/mm

HWD

16.34/41523.43/59514.76/375

16.34/41523.43/59518.70/475

Useful cooling capacity Q.

Kper DIN 3168

L35 L35L35 L50

1700/1740 BTU; 500/510 W920/1260 BTU; 270/370 W

3400/3680 BTU; 1000/1080 W2590/2800 BTU; 760/820 W

Rated current maximum 2.7 A/2.9 A 5.5 A/6.0 A 4.3 A/4.5 A 8.3 A/8.7 A 2.4 A/2.4 A

Starting current 9.2 A/10.2 A 18.4 A/18.4 A 15.5 A/15.5 A 25.3 A/24.3 A 8.0 A/8.8 A

Pre-fuse T 6.0 A/6.0 A 10.0 A/10.0 A 10.0 A/10.0 A 16.0 A/16.0 A 6.0 A/6.0 A

Power consumption Pelto DIN 3168

L35 L35L35 L50

360 W/410 W410 W/450 W

370 W/420 W420 W/470 W

550 W/650 W660 W/750 W

580 W/660 W670 W/755 W

Cooling coefficient ε = Q.

K/Pel L35 L35 1.4 1.8

Refrigerant R134a R134a

Maximum allowable operating pressure 362 psi/25 bar 362 psi/25 bar

Temperature range 68 °F to 131 °F/+ 20 °C to + 55 °C 68 °F to 131 °F/+ 20 °C to + 55 °C

Protection ratings per EN 60 529/10.91 Exterior cycle NEMA Type 12/IP 34/Internal cycle NEMA Type 12/IP 54

Exterior cycle NEMA Type 12/IP 34/Internal cycle NEMA Type 12/IP 54

Duty cycle 100% 100%

Type of connection Plug connector terminals Plug connector terminals

Weight 66 lbs/30 kg 77 lbs/35 kg 88 lbs/40 kg 101 lbs/46 kg 101 lbs/46 kg

Color RAL 7035 light grey RAL 7035 light grey

Air displacement (unimpeded air flow)

Exterior cycle 535 cfm/910 m3/h 1035 cfm/1760 m3/h

Internal cycle 258 cfm/440 m3/h 258 cfm/440 m3/h

Temperature control Basic or Comfort controller(factory setting 95 °F/+ 35 °C)

Basic or Comfort controller(factory setting 95 °F/+ 35 °C)

Special voltages available on request. Specifications subject to change.

Accessories PU Page

Filter mats 3 3286.500 3286.500 34

Metal filter 1 3286.510 3286.510 34

Quick-change frame 1 3286.700 3286.800 34

Door-operated switch 1 4127.000 4127.000 34

Master-slave cable for Comfort controller 1 3124.100 3124.100 35

RiDiag II for Comfort controller, incl. cable 1 3159.100 3159.100 35

Air-ducting system 1 3286.870 3286.870 35

Cover caps for interior air outlet 2 3286.780 3286.880 351) internal transformer – settings according to rated current if transformer circuit-breakers are used.

Mounting cutout SK 3382. . . .

Performance diagram for 60 Hz units, see page 36.


Mounting cutout SK 3383. . . .

375

415

595

415

475

260

326

375

595

475

415

595

415

490

595

420

390

475



Useful cooling capacity 1740/3680 BTU; 510/1080 W

A ducting system provides for targeted cold air distribution.

Configuration:Fully wired ready for connection, including drilling template, assembly parts and multi-lingual assembly manual.

Note:Air conditioners with Comfort controller can be integrated into higher-level remote monitoring systems with an optional inter-face board (RS 232, RS 485 and I2C inter-faces). Please inquire.



16.34/41523.43/59514.76/375

16.34/41523.43/59518.70/475

Voltage 230 V 115 V 230 V 115 V 400 V, 2~




The enormous demands placed on the reliability and efficiency of machines and plants in industrial and IT environments necessitate the same level of functionality, flexibility and modern industrial design from an enclosure air conditioner. These completely newly designed units not only satisfy the requirements for protection of sensitive electronics, but also offer a high degree of flexibility with regard to targeted cold air distribution for enclosure climate control.

Technical description:� SK 3384. . . ., useful cooling capacity

5200 BTU/1520 W to DIN 3168 L35 L35.� SK 3385. . . ., useful cooling capacity


through internal electronics (Part No. . . . . .100 / .110 / . 140).








20 25 30 35 4540 50 55

QK

.

Tu

3000

2600

2200

1800

1400

1000

600

200

55454035

30

25

20

Ti

.



20 25 30 35 4540 50 55

5550454035302520

QK

.

Tu

Ti

4000

3500

3000

2500

2000

1500

1000

500

.

Part No. SK with Basic controller 3384.100 3384.110 3384.140 3385.100 3385.110 3385.140

Part No. SK with Comfort controller 3384.500 3384.510 3384.540 3385.500 3385.510 3385.540

Rated voltage Volt/Hz 230, 50/60 1151), 50/60 4001), 2~, 50/60 230, 50/60 1151), 50/60 4001), 2~, 50/60

Dimensionsinches/mm

HWD

16.34/41523.43/59518.70/475

16.34/41523.43/59518.70/475


Kper DIN 3168

L35 L35L35 L50

5100/5200 BTU; 1500/1520 W3750/4130 BTU; 1100/1210 W

6820/7270 BTU; 2000/2130 W5350/5700 BTU; 1570/1670 W

Rated current maximum 5.7 A/6.8 A 12.5 A/14.1 A 3.4 A/4.0 A 5.7 A/6.6 A 13.0 A/14.2 A 3.3 A/3.8 A

Starting current 16.6 A/17.1 A 30.7 A/29.1 A 9.8 A/9.6 A 16.8 A/18.4 A 36.0 A/32.0 A 10.0 A/12.0 A

Pre-fuse T 10.0 A/10.0 A 16.0 A/16.0 A 6.0 A/6.0 A 10.0 A/10.0 A 20.0 A/20.0 A 10.0 A/10.0 A


L35 L35L35 L50

815 W/930 W950 W/1090 W

850 W/950 W1000 W/1150 W

1000 W/1175 W1100 W/1310 W

1050 W/1250 W1160 W/1380 W


K/Pel L35 L35 1.8 2.0








Weight 90 lbs/41 kg 103 lbs/47 kg 103 lbs/47 kg 92 lbs/42 kg 105 lbs/48 kg 105 lbs/48 kg





Temperature control Basic or Comfort controller (factory setting 95 °F/+ 35 °C)

Basic or Comfort controller (factory setting 95 °F/+ 35 °C)


Accessories PU Page

Filter mats 3 3286.500 3286.500 34

Metal filter 1 3286.510 3286.510 34






Cover caps for interior air outlet 2 3286.880 3286.880 351) internal transformer – settings according to rated current if transformer circuit-breakers are used.

Mounting cutout



475

415

595

415

490

595

420

390

475




Two controller versions are available: Basic and Comfort.





16.34/41523.43/59518.70/475

Voltage 230 V 115 V 400 V, 2~ 230 V 115 V 400 V, 2~




The enormous demands placed on the reliability and efficiency of machines and plants in industrial and IT environments necessitate the same level of functionality, flexibility and modern industrial design from an enclosure air conditioner. These completely newly designed units not only satisfy the requirements for protection of sensitive electronics, but also offer a high degree of flexibility with regard to targeted cold air distribution for enclosure climate control.


11,250 BTU/3300 W to DIN 3168 L35 L35.

� SK 3387. . . ., useful cooling capacity 14,300 BTU/4200 W to DIN 3168 L35 L35.

� Basic version: Temperature control through internal electronics (Part No. . . . . .140).

� Comfort version: Temperature control and system monitoring through micro-processor control of the unit(Part No. . . . . .540).

� Versions . . . . .140 / .540 are multi-voltage-capable (400 and 460 V without rewiring).







20 25 30 35 4540 50 55

55

454035302520

QK

.

Tu

Ti

4500

4000

3500

3000

2500

2000

1500

1000

.



20 25 30 35 4540 50 55

20

25303540455055

QK

.

Tu

Ti

7000

6000

5000

4000

3000

2000

1000

.

Part No. SK with Basic controller 3386.140 3387.140

Part No. SK with Comfort controller 3386.540 3387.540

Rated voltage Volt/Hz 400, 50/460, 60, 3~ 400, 50/460, 60, 3~

Dimensionsinches/mm

HWD

18.31/46531.30/79522.83/580

18.31/46531.30/79522.83/580


Kper DIN 3168

L35 L35L35 L50

10,200/11,250 BTU; 3000/3300 W8400/9400 BTU; 2460/2750 W

13,650/14,300 BTU; 4000/4200 W11,100/11,900 BTU; 3250/3490 W

Rated current maximum 3.0 A/3.1 A 3.5 A/3.6 A

Starting current 8.0 A/9.0 A 17.0 A/19.0 A

Motor circuit-breaker Motor starter sized per rated current maximum Motor starter sized per rated current maximum


L35 L35L35 L50

1120 W/1460 W1395 W/1740 W

1620 W/2060 W1870 W/2340 W


K/Pel L35 L35 2.7 2.7








Weight 154 lbs/70 kg 169 lbs/77 kg








Accessories PU Page

Filter mats 3 3286.600 3286.600 34

Metal filter 1 3286.610 3286.610 34






Cover caps for interior air outlet 2 3286.980 3286.980 35

Mounting cutout



580

465

795

580 52

0

392

795

692



Useful cooling capacity 11,250/14,300 BTU; 3300/4200 W

Identical installation cutouts for various output classes.



Useful cooling capacity 11,250 BTU/3300 W 14,300 BTU/4200 W


18.31/46531.30/79522.83/580

Voltage 400 V, 50/460 V, 60, 3~

Part No. SK with Basic controller 3386.140 3387.140





21.65/55011.02/28005.51/140

21.65/55011.02/28007.87/200

Voltage 115 V 230 V 115 V 230 V 115 V 230 V

Part No. SK with Basic controller 3302.110 3302.100 3303.110 3303.100


Page 22 22


Space savingsThe capacity range begins with climate control solutions for small housings and goes right up to high-performance air conditioners for large bayed enclosure systems.

Useful cooling capacity 8000 BTU/2350 W


62.20/158015.75/040011.42/0290

Voltage 115 V 230 V 400/460 V 115 V 230 V 400/460 V

Part No. SK with Basic controller 3328.110 3328.100 3328.140

Part No. SK with Comfort controller 3328.510 3328.500 3328.540

Page 26


Wallmount air conditioners1090 BTU/320 Watt

Wallmount air conditioners 8000 BTU/2350 Watt

Note: All cooling capacities are calculated at 60 Hz. Conversions: °F = (1.8 x °C) + 32°; BTU/Hr = 3.413 x Watts


Greater flexibilityThe divided case construction permits three different installation options: integrated, partially integrated or external mounting.

WA L L M O U N T A I R C O N D I T I O N E R S


Overview

3600 BTU/1060 W 5150 BTU/1510 W

37.40/95015.75/40010.24/260

37.40/95015.75/40010.24/260

115 V 230 V 400/460 V 115 V 230 V 400/460 V 115 V 230 V 400/460 V 115 V 230 V 400/460 V

3304.110 3304.100 3304.140 3305.110 3305.100 3305.140

3304.510 3304.500 3304.540 3305.510 3305.500 3305.540

24 24

� � � � � � � � � � � �

9390 BTU/2750 W 9220 BTU/2700 W 9390 BTU/2750 W 9220 BTU/2700 W 15,000 BTU/4400 W

62.20/158015.75/040011.42/0290

62.20/158019.69/050013.39/0340

115 V 230 V 400/460 V 115 V 230 V 400/460 V 400/460 V

3329.110 3329.100 3329.140 3332.140

3329.510 3329.500 3329.540 3332.540

26 28

� � � � � � � �



Wallmount air conditioners 15,000 BTU/4400 Watt

Wallmount air conditioners 9390 BTU/2750 Watt9220 BTU/2700 Watt


280

550

42

98

280

550

200100

100

42

158

The enormous demands placed on the reliability and efficiency of machines and plants in industrial and IT environments necessitate the same level of functionality, flexibility and modern industrial design from an enclosure air conditioner. These newly designed units not only satisfy the requirements for protection of sensitive electronics, but also offer a high degree of flexibility with regard to mounting options.


1090 BTU/320 Watt to DIN 3168 L35 L35.

� SK 3303. . . ., useful cooling output 2080 BTU/610 Watt to DIN 3168 L35 L35.

� Basic version: Temperature control through internal electronics (Part No. . . . . .100 / .110).

� Comfort version: Temperature control and system monitoring through micro-processor control of the unit(Part No. . . . . .500 / .510).

� The divided case construction permits up to three different installation options (SK 3303. . . .).

� Generous distances between the air intakes and outlets in the interior air circuit ensure good air circulation even in case of very compact installations.



20 25 30 35 4540 50 552025303540455055

QK

.

Tu

Ti

700

600

500

400

300

200

100

0

.



20 25 30 35 4540 50 5520

25

30

35

40455055

QK

.

Tu

Ti

1050

900

750

600

450

300

150

0

.

Part No. SK with Basic controller 3302.100 3302.110 3303.100 3303.110


Rated voltage Volt/Hz 230, 50/60 115, 60 230, 50/60 115, 60 230, 50/60 115, 60

Dimensionsinches/mm

HWD

21.65/55011.02/2805.51/140

21.65/55011.02/2807.87/200


Kper DIN 3168

L35 L35L35 L50

1020/1090 BTU; 300/320 W510/580 BTU; 150/170 W

1700/2080 BTU; 500/610 W950/1190 BTU; 280/350 W

Rated current maximum 1.6 A/1.7 A 3.3 A 2.6 A/2.6 A 5.7 A 2.6 A/2.6 A 5.7 A

Starting current 3.0 A/3.4 A 8.0 A 5.1 A/6.4 A 11.5 A 5.1 A/6.4 A 11.5 A

Pre-fuse T 4.0 A/4.0 A 6.0 A 4.0 A/4.0 A 10.0 A 4.0 A/4.0 A 10.0 A


L35 L35L35 L50

245 W/255 W255 W/275 W

290 W340 W

360 W/380 W420 W/390 W

470 W500 W

360 W/380 W420 W/390 W

470 W500 W


K/Pel L35 L35 1.2 1.4

Refrigerant R134a

Maximum allowable operating pressure 362 psi/25 bar

Temperature and setting range 68 °F to 131 °F/+ 20 °C to + 55 °C


Duty cycle 100%

Type of connection Plug connector terminals

Weight 28.7 lbs/13 kg 28.7 lbs/13 kg 37.5 lbs/17 kg 37.5 lbs/17 kg 37.5 lbs/17 kg 37.5 lbs/17 kg

Color RAL 7035 light grey




Temperature control Basic controller(factory setting 95 °F/+ 35 °C)

Comfort controller(factory setting 95 °F/+ 35 °C)


Accessories PU Page

Filter mats 3 3286.300 34

Metal filter 1 3286.310 34

Door-operated switch 1 4127.000 34

Master-slave cable for Comfort controller 1 – 3124.100 35

RiDiag II for Comfort controller, incl. cable 1 – 3159.100 35

Partial internalmounting

Externalmounting




Externalmounting

Internalmounting

140




280

550

501

251

18 x 45°

280

(230)

205

254

524

Ø 8 (4x)

Ø 15 (2x)

266

2549

2

518

550

262

266

280

480

15.5

550

Ø 8(4x)

532

280

(230)

254

524

Ø 8(4x)

Ø 15 (2x)

18 x 45°

266

2549

2

518

550

18 x 45°

280

(230)

205

254

524

Ø 8 (4x)

Ø 15 (2x)

266

2549

2

518

550

Configuration:Fully wired ready for connec-tion, including drilling tem-plate, assembly parts and multi-lingual assembly manual.

Note:Air conditioners with Comfort controller can be integrated into higher-level remote monitoring systems with an optional interface board (RS 232, RS 485 and I2C inter-faces). Please inquire.



21.65/55011.02/2805.51/140

21.65/55011.02/2807.87/200

Voltage 230 V 115 V 230 V 115 V 230 V 115 V

Basic controller � � � � – –

Comfort controller – – – – � �

Part No. SK 3302.100 3302.110 3303.100 3303.110 3303.500 3303.510

SK 3302. . . .Mountingcutoutexternalmounting

Mountingcutoutpartial internalmounting

SK 3303. . . .Mountingcutoutexternalmounting

Mountingcutoutpartial internalmounting

Mountingcutoutinternalmounting


950

400 260

155105 50

210



3600 BTU/1060 W per DIN 3168 L35 L35.

� SK 3305. . . ., useful cooling capacity 5150 BTU/1510 W per DIN 3168 L35 L35.

� Basic version: Temperature control through internal electronics (Part No. . . . . .100 / .110 / .140).


� Versions . . . . .140 / .540 are dual-voltage (400 and 460 V without rewiring).

� The divided case construction permits up to three different installation versions.




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Internal mounting



Rated voltage Volt/Hz 230, 50/60 1151), 50/60 4002), 50/460, 60, 3~ 230, 50/60 1151), 50/60 4002), 50/

460, 60, 3~

Dimensionsinches/mm

HWD

37.40/95015.75/40010.24/260

37.40/95015.75/40010.24/260


Kper DIN 3168

L35 L35L35 L50

3400/3600 BTU; 1000/1060 W2700/2860 BTU; 790/840 W

5120/5150 BTU; 1500/1510 W4200/4250 BTU; 1230/1250 W



Pre-fuse T/2) Motor circuit-breaker 10.0 A/10.0 A 16.0 A/16.0 AMotor starter sized per rated current max.

16.0 A/16.0 A 20.0 A/20.0 AMotor starter sized per rated current max.


L35 L35L35 L50

700 W/650 W750 W/710 W

725 W/680 W780 W/750 W

580 W/550 W660 W/680 W

850 W/1000 W1000 W/1160 W

880 W/1050 W1040 W/1200 W

800 W/980 W960 W/1150 W


K/Pel L35 L35 1.4 1.7 1.8 1.7 1.9








Weight 86 lbs/39 kg 97 lbs/44 kg 88.2 lbs/40 kg 90.4 lbs/41 kg 101.4 lbs/46 kg 92.6 lbs/42 kg








Accessories PU Page

Filter mats 3 3286.400 3286.400 34

Metal filter 1 3286.410 3286.410 34



RiDiag II for Comfort controller, incl. cable 1 3159.100 3159.100 351) internal transformer – settings according to rated current if transformer circuit-breakers are used.

Externalmounting







400

250

345

280

36.5

235

255

950

15

220

110

Ø 9.5 (8x)

385300

380

Ø 9.5 (4x)

400

370

R6 (4x) 25

920

920

950

2

25 x

45°

370

330

Ø 9.5 (4x)

380950

920

920

25 x 45°

400

Two controller versions are available: Basic and Comfort.

Configuration:Fully wired ready for connec-tion, including drilling tem-plate, assembly parts and multi-lingual assembly manual.

Note:Air conditioners with Comfort controller can be integrated into higher-level remote monitoring systems with an optional interface board (RS 232, RS 485 and I2C inter-faces). Please inquire.

Mounting cutoutexternalmounting

Mounting cutoutpartial internalmounting



37.40/95015.75/40010.24/260

Voltage 230 V 115 V 400 V/460 V, 3~ 230 V 115 V 400 V/

460 V, 3~



Mounting cutoutinternalmounting


290 50

240

1580

400 145

145



8000 BTU/2350 W to DIN 3168 L35 L35.� SK 3329. . . ., useful cooling capacity


through internal electronics (Part No. . . . . .100 / .110 / .140).


� Versions . . . . .140 / .540 are dual voltage (400 and 460 V without rewiring).





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Rated voltage Volt/Hz 230, 50/60 1151), 50/60 4002), 50/460, 60, 3~ 230, 50/60 1151), 50/60 4002), 50/

460, 60, 3~

Dimensionsinches/mm

HWD

62.20/158015.75/40011.42/290

62.20/158015.75/40011.42/290


Kper DIN 3168

L35 L35L35 L50

6800/8000 BTU; 2000/2350 W4950/5750 BTU; 1450/1690 W

8500/9390 BTU; 2500/2750 W5450/5950 BTU; 1600/1750 W

8500/9220 BTU;2500/2700 W6480/6660 BTU;1900/1950 W



Pre-fuse T/2) Motor circuit-breaker 16.0 A/16.0 A 24.0 A/24.0 AMotor starter sized per rated current max.

16.0 A/16.0 A 24.0 A/24.0 AMotor starter sized per rated current max.


L35 L35L35 L50

900 W/1070 W1130 W/1220 W

960 W/1130 W1170 W/1290 W

930 W/1150 W1150 W/1400 W

1320 W/1550 W1500 W/1880 W

1380 W/1600 W1550 W/1940 W

1300 W/1500 W1550 W/1850 W


K/Pel L35 L35 1.7 2.3 1.9 2.0








Weight 145.5 lbs/66 kg 160.9 lbs/73 kg 147.7 lbs/67 kg 152.1 lbs/69 kg 167.6/76 kg 154.3/70 kg








Accessories PU Page

Filter mats 3 3286.400 3286.400 34

Metal filter 1 3286.410 3286.410 34



RiDiag II for Comfort controller, incl. cable 1 3159.100 3159.100 351) internal transformer – settings according to rated current if transformer circuit-breakers are used.

Externalmounting



Internalmounting




280

350

400

Ø 13 (10x)

400

3529

5

380

1580

210

2555

0

320 325

275

340

400

370

324

324

Ø 13 (4x)

1558

1554

1535

1580

Ø 12 (2x)

25

R6 (2x)

376

Three installation versions are possible: integrated, partially integrated or external mounting.


Note:Air conditioners with Comfort controller can be integrated into higher-level remote monitoring systems with an optional inter-face board (RS 232, RS 485 and I2C interfaces). Please inquire.

Mounting cutoutexternal mounting

Mounting cutout partial internalmounting, internal mounting

Useful cooling capacity 8000 BTU/2350 W

9390 BTU/2750 W

9220 BTU/2700 W


62.20/158015.75/40011.42/290

Voltage 230 V 115 V 400 V/460 V, 3~ 230 V 115 V 400 V/

460 V, 3~




500

1580

340 145 195



15,000 BTU/4400 W to DIN 3168 L35 L35.

� Basic version: Temperature control through internal electronics (Part No. . . . . .140).

� Comfort version: Temperature control and system monitoring through micro-processor control of the unit(Part No. . . . . .540).

� Versions . . . . .140 / .540 are dual-voltage (400 and 460 V withoutrewiring).





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Part No. SK with Basic controller 3332.140

Part No. SK with Comfort controller 3332.540

Rated voltage Volt/Hz 400, 50/460, 60, 3~ 400, 50/460, 60, 3~

Dimensionsinches/mmwithout vent grille

HWD

62.20/158019.69/50013.39/340


Kper DIN 3168

L35 L35L35 L50

13,600/15,000 BTU; 4000/4400 W10,400/12,000 BTU; 3070/3570 W

Rated current maximum 3.8 A/3.9 A

Starting current 9.2 A/11.0 A

Motor circuit-breaker Motor starter sized per rated current maximum


L35 L35L35 L50

1710 W/2110 W1980 W/2450 W


K/Pel L35 L35 2.3

Refrigerant R134a

Maximum allowable operating pressure 406 psi/28 bar

Temperature range 68 °F to 131 °F/+ 20 °C to + 55 °C


Duty cycle 100%

Type of connection Plug connector terminals

Weight 200.6 lbs/91 kg

Color RAL 7035


Exterior cycle 2000 m3/h

Internal cycle 1500 m3/h

Temperature control Basic or Comfort controller (factory setting 95 °F/+ 35 °C)



Accessories PU Page

Filter mats 3 3286.400 34

Metal filter 1 3286.410 34

Door-operated switch 1 4127.000 34

Master-slave cable for Comfort controller 1 3124.100 35

RiDiag II for Comfort controller, incl. cable 1 3159.100 35


External mounting



Useful cooling capacity 15,000 BTU/4400 W

500

380

440

440

Ø 13 (10x)

4529

0

1580

164

360

380

500

375

380

275

25

500

362

153015

50

25

474

Ø 13 (4x)

1580

Divided case construction for greater installation flexibility.


Note:Air conditioners with Comfort controller can be integrated into higher-level remote monitoring systems with an optional inter-face board (RS 232, RS 485 and I2C interfaces). Please inquire.

Useful cooling capacity 15,000 BTU/4400 W


62.20/158019.69/50013.39/340

Voltage 400 V, 50/460 V, 60, 3~

Basic controller � –

Comfort controller – �

Part No. SK 3332.140 3332.540

Mounting cutoutexternal mounting

Mounting cutout partial internal mounting


PRIOR NEWRoofmount air conditioners Roofmount air conditioners

Useful cool. cap. BTU/W Voltage V Part No. Part No. Voltage V Controller Useful cool. cap. BTU/W

1300/410

230 3265.100 3382.100 230Basic

1740/510115 3266.100 3382.110 115

3382.500 230Comfort

3382.510 115

2950/800

230 3296.100 3383.100 230

Basic

3680/1080

115 3272.100 3383.110 115

400 3296.140 3383.140 400

230 3296.500 3383.500 230

Comfort115 3272.500 3383.510 115

400 3296.540 3383.540 400

4800/1400

230 3290.100 3384.100 230

Basic

5200/1520

115 3280.100 3384.110 115

400 3290.140 3384.140 400

230 3290.500 3384.500 230

Comfort115 3280.500 3384.510 115

400 3290.540 3384.540 400

7030/2050

230 3256.100 3385.100 230

Basic

7270/2130

115 3256.115 3385.110 115

400 3256.140 3385.140 400

230 3256.500 3385.500 230

Comfort3385.510 115

400 3256.540 3385.540 400

9550/2700400 3299.140 3386.140

400/460

Basic

11,250/3300400 3299.500 3386.540 Comfort

9550/2800460 3261.140 3386.140 Basic

460 3261.500 3386.540 Comfort

3387.140400/460

Basic14,300/4200

3387.540 Comfort


T H E N E W R O O F M O U N T A I R C O N D I T I O N E R SComparison of the prior and new generation

Page Dim. H x W x D in./mm

14

16.34 x 23.43 x 14.76/

415 x 595 x 375

16.34 x 23.43 x 18.70/

415 x 595 x 475

16

1818.30 x 31.25 x

22.83/465 x 795 x 580

Mounting cutout

475

260

326

375

595

490

595

420

390

475

580 52

0

392

795

692


PRIOR NEWWallmount air conditioners Wallmount air conditioners

Useful cool. cap. BTU/W Voltage V Part No. Part No. Voltage V Controller Useful cool. cap. BTU/W

1230/350230 3203.100 3302.100 230

Basic 1090/320115 3205.100 3302.110 115

2400/680

230 3269.100 3303.100 230Basic

2080/610115 3262.100 3303.110 115

3303.500 230Comfort

3303.510 115

3300/825or

3925/1100

230 3293.100 / 3393.100 3304.100 230

Basic

3600/1060

115 3281.100 / 3381.100 3304.110 115

400/460 3293.140 / 3393.140/.146 3304.140 400/460

230 3293.500 / 3393.500 3304.500 230

Comfort115 3281.500 / 3381.500 3304.510 115

400/460 3293.540 / 3393.540/.546 3304.540 400/460

4950/1400230 3298.100 3305.100 230

Basic

5150/1510

115 3279.100 3305.110 115

5566/1760 400/460 3260.140/.146 3305.140 400/460

4950/1400230 3298.500 3305.500 230

Comfort115 3279.500 3305.510 115

5566/1760 400/460 3260.500/.546 3305.540 400/460

7575/2000

230 3390.100 3328.100 230

Basic

8000/2350

115 3390.115 3328.110 115

400/460 3390.140/.146 3328.140 400/460

230 3390.500 3328.500 230

Comfort115 3390.515 3328.510 115

400/460 3390.540/.546 3328.540 400/460

9215/2500230 3392.100 3329.100 230

Basic

9390/2750115 3392.115 3329.110 115

8879/2600 400/460 3394.140/.1463329.140 400/460 9220/2700

9215/2500

400 3392.140

230 3392.500 3329.500 230

Comfort

9390/2750115 3392.515 3329.510 115

8879/2600 400/460 3394.500/.5463329.540 400/460 9220/2700

9215/2500 400 3392.540

15,900/4000400/460 3391.140/.146 3332.140

400/460Basic

15,000/4400400 3391.500 3332.540 Comfort


T H E N E W WA L L M O U N T A I R C O N D I T I O N E R SComparison of the prior and new generation

Mounting cutout,external mounting

Mounting cutout,partial internal mounting

Mounting cutout,internal mounting

18 x 45°

280

(230)

205

254

524

Ø 8 (4x)

Ø 15 (2x)

266

2549

2

518

550

Page Dim. H x W x D in./mm

22

21.65 x 11.02 x 5.51/550 x 280 x 140

21.65 x 11.02 x 7.87/550 x 280 x 200

24 37.40 x 15.75 x 10.24/950 x 400 x 260

26 62.20 x 15.75 x 11.42/1580 x 400 x 290

28 16.20 x 19.69 x 13.39/1580 x 500 x 340

400

250

34528

0

36.5

235

255

950

15

220

110

Ø 9.5 (8x)

385300

370

330

Ø 9.5 (4x)

380950

920

920

25 x 45°

400

380

Ø 9.5 (4x)

400

370

R6 (4x) 25

920

920

950

2

25 x

45°

262

266

280

480

15.5

550

Ø 8(4x)

532

280

(230)

254

524

Ø 8(4x)

Ø 15 (2x)

18 x 45°

266

2549

2

518

550

280

350

400

Ø 13 (10x)

400

3529

5

380

1580

210

2555

0

320 325

275

340

400

370

324

324

Ø 13 (4x)

1558

1554

1535

1580

Ø 12 (2x)25

R6 (2x)

376

500

380

440

440

Ø 13 (10x)

4529

0

1580

164

360

380

500

375

380

275

25

500

362

153015

50

25

474

Ø 13 (4x)

1580

280

550

501

251

18 x 45°

280

(230)

205

254

524

Ø 8 (4x)

Ø 15 (2x)

266

2549

2

518

550


A C C E S S O R I E SFor climate control

Filter mats for RittalTopTherm air conditionersRittal air conditioners are low-maintenance and are supplied without filter mats. Filter mats may be used for extreme conditions.

Material:Open-celled polyurethane foamed plastic with excellent physical and mechanical properties. Temperature-resistant from– 40 °F to 176 °F/ – 40 °C to + 80 °C.Thickness: .39˝/10 mm

Metal filter for RittalTopTherm air conditionersParticularly when air conditioners are used in dusty and damp environments, it is advisable to use washable metal filters. If air or steam condenses on the metal surfaces, any particles that may be present will adhere to the metal and are easily washed out with water or grease-dissolv-ing detergents.

Material:AluminumThickness: .39˝/10 mm

Filter mats for TopTherm air conditioners

For air conditioners PUPart No.

Standard filter mat SK

PU Part No. Metal filter mat SK

SK 3302. . . . / SK 3303. . . . H x W x D in inches/mm7.87 x 10.43 x .39/200 x 265 x 10

3 3286.300 1 3286.310

SK 3304. . . . / 3305. . . . / 3328. . . . / 3329. . . . / 3332. . . . H x W x D in inches/mm10.55 x 13.54 x .39/268 x 344 x 10

3 3286.400 1 3286.410

SK 3382. . . . / SK 3383. . . . / SK 3384. . . . / SK 3385. . . .H x W x D in inches/mm10.04 x 20.87 x .39/255 x 530 x 10

3 3286.500 1 3286.510

SK 3386. . . . / SK 3387. . . . H x W x D in inches/mm11.81 x 28.35 x .39/300 x 720 x 10

3 3286.600 1 3286.610

Quick-change frame for roofmount air conditioners The quick-change frame is more than just an alternate frame. The sealing gasket is used to screw the quick-change frame to the enclosure, allowing the ready-wired air conditioner to be installed or removed from the quick-change frame from the outside, using quick-release fasteners. This means shorter assembly times and minimum downtime during servicing. In addition, quick-change frames offer effective protec-tion against the ingress of oil in oily atmo-spheres, due to their integrated drainage trough.

Material:Sheet metal steel

Color:RAL 7032 pebble grey

Configuration:Quick-change frame, seal,quick-release fasteners.

US Patent No. 4,802,060German Patent No. 38 77 232European Patent No. 0 284 889With Validity For De, FrGerman Patent No. 41 10 323French Patent No. 2 675 317GB Patent No. 2 254 735

For TopTherm air conditioners PU Part No.

SK

SK 3382. . . . 1 3286.700

SK 3383. . . .SK 3384. . . .SK 3385. . . .

1 3286.800

SK 3386. . . .SK 3387. . . . 1 3286.900

Door-operated switchFor activation/deactivation of enclosure lights, for deactivation of air conditioners while the door is open (to prevent conden-sation) or for monitoring the door. No drilling required for installation.

Part No. PS

Door operated switch including mounting

accessories4127.000

Functional diagram

A C C E S S O R I E S


For climate control

SK BUS system for Comfort ControllersThe SK BUS system creates communica-tion facilities between several TopTherm air conditioners. The BUS uses a master/slave set-up similar to that required in bayed enclosure systems for optimum operating results.

Technical description:The master-slave layout facilitates com-mon activation and deactivation via door limit switches, parallel activation and deactivation via a temperature setpoint, and common collective fault signals and temperature logging, eliminating the need for intricate wiring.

Configuration:Approximately 10′/3 m shielded interface cable, including operating manual and air conditioner programming instructions.

nB = nK – 1nB: Number of order units (SK BUS system)nK: Number of air conditioners to be linked

PU Part No. SK

1 3124.100

RiDiag II for Comfort ControllersRiDiag is a diagnosis tool for the operating conditions of Comfort controller-regulated air conditioners. By connecting a PC, it is possible to retrieve error messages, tem-peratures and capacity utilization levels of the air conditioners.

The system includes integrated tempera-ture measurement from four sensors in the air conditioner, and also features graphical representation of the temperature over time.

Quick and easy programming for all Com-fort Controller parameters and settings.

System requirements:Windows 3.1, 95/98/2000 or NT

Configuration:CD-ROM with software.Interface/communication cable.

PU Part No. SZ

1 3159.100

Door wheel for TS/ESLifts the door with heavy installed equip-ment (e.g. air conditioner) as a closing aid. For attaching to the door frame.

PU Part No. PS

10 4538.000

Air duct system for Rittal TopTherm roofmount air conditionersWith the air duct system for Rittal TopTherm roofmount air conditioners, it is possible to route the cold air directly to specific areas of the enclosure. The risk of “short circuits” in the air circulation due to installed devices with their own ventilation is thus capably eliminated. Covers can be used to cover unused cold air outlets.

Configuration:Flat duct, flexible connection, corner piece.

For air conditioner PUPart No.

Air duct systemSK

PUPart No.

Cover capsSK

SK 3382. . . . 1 3286.870 2 3286.780

SK 3383. . . . / SK 3384. . . . / SK 3385. . . . 1 3286.870 2 3286.880

SK 3386. . . . / SK 3387. . . . 1 3286.970 2 3286.980

PU Part No.

90 Degree Deflecting Angle 1 3286.990


Roofmount air conditioners1740/3680 BTU; 510/1080 W

Part No. SK3382.100 / 3382.110 3382.500 / 3382.510

Part No. SK3383.100 / 3383.110 / 3383.1403383.500 / 3383.510 / 3383.540


Page 14

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.

Roofmount air conditioners5200/7270 BTU; 1520/2130 W

Part No. SK3384.100 / 3384.110 / 3384.1403384.500 / 3384.510 / 3384.540

Part No. SK3385.100 / 3385.110 / 3385.1403385.500 / 3385.510 / 3385.540


Page 16

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3500

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2000

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1000

500

.

Roofmount air conditioners11,250/14,300 BTU; 3300/4200 W

Part No. SK3386.140 / 3386.540

Part No. SK3387.140 / 3387.540


Page 18

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Higher output at 60 Hz!This page contains performance diagrams for Rittal enclosure air conditioners for all 60 Hz power supply networks. At 60 Hz, the units are even more effective.

For detailed product information on a specific air conditioner unit, please reference the page number indicated.

PE R F O R M A N C E D I A G R A M S 6 0 H Z


to DIN 3168

Wallmount air conditioners1090/2080 BTU; 320/610 W

Part No. SK3302.100 / 3302.110

Part No. SK3303.100 / 3303.110 3303.500 / 3303.510


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Part No. SK3304.100 / 3304.110 / 3304.1403304.500 / 3304.510 / 3304.540

Part No. SK3305.100 / 3305.110 / 3305.1403305.500 / 3305.510 / 3305.540


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Part No. SK3328.100 / 3328.110 / 3328.1403328.500 / 3328.510 / 3328.540

Part No. SK3329.100 / 3329.110 / 3329.1403329.500 / 3329.510 / 3329.540


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1600

800

0

Ti

5550

4035

45

30

20

25

.

38

H E A T D I S S I P A T I O N

Rittal System Climate Control/Air Conditioning Innovations 2002

IntroductionModern production technology has be-come far more powerful since the advent of electronics, particularly microelectronics. However, as electronic components become increasingly miniaturized and the packing density in enclosures and elec-tronic housings increases, these complex systems have become more sensitive to external factors such as dust, oil, humidity and temperature.

This is critical, since the failure of elec-tronic components inevitably leads to the shutdown of entire production lines. The resulting costs can be astronomical.

Heat in particular is the number one enemy of sensitive electronics.

For semi-conductors, for example, a rule of thumb states that for every 18°F/10°C increase in the operating temperature, in relation to the maximum permissible oper-ating temperature, service life is halved. On the other hand, high temperatures are

inevitable in enclosures because the installed drives, transformers, power distri-bution components, programmable logic systems and electronic components dissi-pate heat while in operation. This results in “heat loss.”

The output-dependent temperature fluctuations in an enclosure or electronic housing can also be substantial. These fluctuations cause stress, which in turn leads to faster aging of the electronic components and may cause premature failure.

As mentioned above, correct operation of electronic circuits and the problem-free operation of entire production lines depends substantially on the extent to which the heat occurring in the enclosure is dissipated to the outside.

Whether enclosures are open, i.e. air per-meable, or closed, i.e. air impermeable, has a decisive effect on the type of heat dissipation. Whereas in open enclosures,

the heat can be dissipated via air flow, in closed enclosures, this can only be imple-mented via the enclosure walls.

°C

100

10

1

0,120 30 40 50 60 70 80 90

Electrolyticcapacitor

Integratedcircuits

Year

s

Fig. 1: Correlation between service life and the temperature of electronic components.

°C = Component temperatureYears = Service life

Basic terms used in calculationIn order to select air conditioner com-ponents correctly, some calculations are required. The following factors play a significant role:� Q

.V [watts]: Heat loss of the electronic

components built inside the enclosure.� Q

.S [watts]: Thermal output absorbed or

dissipated by the effective surface area of the enclosure (as specified by VDE 0660, part 500). If the interior temperature of the enclosure is higher than the ambient temperature (Ti >Tu),heat is dissipated by the enclosure (Q

.S > 0). If the ambient temperature is

higher than the interior temperature (Ti<Tu), heat is absorbed by the enclo-sure (Q

.S < 0).

� Q.

E [watts]: Required cooling output of an air conditioner; this refers to the ther-mal output which the appliance must dissipate from the enclosure.

� Q.

H [watts]: Required thermal output of an enclosure heater.

� Ti [°C]: Maximum permissible interior temperature of the enclosure as pre-scribed by the manufacturers of the electronic components. Generally between + 35 °C and + 45 °C. Tu [°C]: Maximum ambient temperature at which performance of electronic components is not degraded.

� V.

[m3/h]: Required volumetric flow of a filter fan unit.

� A [m2]: Effective surface area of the enclosure determined in accordance with DIN 57 660, part 500 or VDE 0660, part 500.

� k [W/m2K]: Heat transfer coefficient of enclosure:

� Sheet steel ~ 5.5 W/m2K� Plastic ~ 3.5 W/m2K

TE C H N I C A L S P E C I F I C A T I O N S


Enclosure air conditionersPractical tipsIn all situations where optimum operating temperatures are required inside an enclo-sure, even at high external temperatures, a Rittal enclosure air conditioner can provide the right solution. It is even possible to cool the interior temperature of the enclosure to well below the ambient temperature.

The favorable air flow arrangement of the air inlet and outlet openings in the internal and external circuits ensures optimum air circulation inside the enclosure. This sample calculation will show you a quick, time-saving method for calculating a air conditioner.

Please note the following:� Where will the enclosure be sited

(dusty or oily air)?� What type of installation to

DIN VDE 0660, part 500 is your calculation based on?

� What type of ambient temperatures do you anticipate, e.g. ambient tempera-ture and humidity?

� What is the heat loss Q� v in the enclosure?

� What is the required maximum interior temperature of the enclosure Ti ?

� What are your protection category requirements to DIN 40 050?

� In the case of bayed enclosures, any output radiated by the neighboring enclosures must also be taken into account.

� The radiated output e.g. from the environment into the enclosure must be taken into account.

� The air conditioners should always be connected via door operated switches in order to prevent excessive conden-sation.

� The installation site of the enclosure and the arrangement of the air conditioner must be carefully selected to ensure good ventilation of the external air circuit.

� The distance between the units and from the wall should be at least 7.87˝/200 mm.

� In order to prevent an air short-circuit in the internal circuit, the air inlets and outlets should not be covered over.

� To prevent increased condensation, the enclosure should be well sealed on all sides, including wireways and conduits.

Selecting an air conditionerConsequently, an enclosure air conditioner with a refrigeration output Q

.E = 1063 watts

is required at an ambient temperature Tu = + 50°C and a desired enclosure interior temperature Ti = + 35°C.

Using the performance diagram, we selected an enclosure air conditioner (SK 3305.100) to mount against a wall with a continuous useful cooling capacity of 4250 BTU/1250 watts (see diagram).

Condensation and dehumidification of enclosure air when using air conditionersAn unavoidable side-effect of using air conditioners is the dehumidification of the enclosure’s interior air. As it cools down, part of the humidity contained in the air condenses on the evaporator coil. This condensate must be discharged reliably from the enclosure. The amount of conden-sate occurring depends on relative humid-ity, the air temperature in the enclosure and on the evaporator coil, and the air volume present in the enclosure. The Mollier h-x diagram shows the water content of air depending on its tempera-ture and relative air humidity.

Q

20 25 30 35 4540 50 55

K

.

Tu

55

403020

Ti

3000

2600

2200

1800

1400

1000

600

200

Performance diagramSK 3305. . . .

(DIN 3168) (50 Hz)


.

Size of enclosure in mmH = 2000 W = 600D = 500

A 4.4

Calculate theeffective surface area

of the enclosure(freestanding)

Temperature outside of enclosure in °C Tu = + 50

Calculate thetemperature difference

∆T = Ti – Tu

Required temperatureinside the enclosure in °C Ti = + 35

Heat transfer coefficientSheet metal ~ 5.5 W/m2KPlastic ~ 3.5 W/m2K

k = 5.5Enter the

heat transfercoefficient here

Heat loss in watts Q.

V = 700Enter the

heat loss here

Now calculate therequired cooling capacityQ.

E = Q.

V = – k � A � ∆T

Requiredcooling capacityQ.

E =

We are looking for a wallmount air conditioner.The values shown in blue have been assumed.

}

The software Rittal Therm offers complex calculations for climate control require-ments.

A = 4.4

∆T= – 15

k = 5.5

Q.

V = 700

Watts 1063

Rittal TOP software serviceRittal Therm

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