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Table of Contents
Summary of Contents for Stulz Free-Air-3-IN
- Page 1 Free-Air-3-IN Free cooling units Issue 02.2018 48 V DC...
- Page 2 F r e e - A I r - 3 - I N A B O U T S T U L Z G M B H Since it was founded in 1947, the STULZ company has evolved into one of the world’s leading system suppliers of air-conditioning technology.
- Page 3 It's the result of decades of research and design studies, with a fine search of materials and technologies to obtain an high quality unit. The CE mark guarantees that the STULZ products satisfy the requirements of the European Machinery Directive for safety.
- Page 4 F r e e - A I r - 3 - I N EN/02.2018 © STULZ SpA – all rights reserved...
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Page 5: Table Of Contents
8.2. Hazards arising from the product coming into contact with things or persons ....26 8.3. Hazards arising from electrical faults ....................26 8.4. Fire hazards and toxic substances .......................27 9. Uninstalling and disposal of the unit ..............28 10. Technical data and drawings ................29 © STULZ SpA – all rights reserved EN/02.2018... - Page 6 To require or receive any updates of the instructions manual or amendments thereto, which shall be deemed to be an integral part of the manual, please contact your local STULZ partner. It is absolutely essential to comply with the measures listed in chapter "Safety directions".
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Page 7: Safety Directions
In addition, it entails loss of compensations rights. 1.3. Work in safety Observe safety instructions in this operating instruction manual, national regulations about accident prevention and internal safety, operational and working indications. © STULZ SpA – all rights reserved EN/02.2018... -
Page 8: Maintenance, Inspection And Monitoring Of The Plant
1.5. Independent conversion and manufacture of replacement parts The system may only be converted or modified after consultation with STULZ. Original replacement parts and replacement parts/accessories authorized by STULZ are an aid to safety. 1.6. - Page 9 IP protection degree is the protection, from the outdoor environment, of the unit when installed in its normal use. The IP protection degree of STULZ Free-Air-3-IN unit, installed with suitable external rainproof grille, is IPX4, therefore the unit is protected from harmful effects of splashing of water against the enclosure from any direction (according to EN 60529, considering the prescriptions of EN 60335).
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Page 10: Components And Operating Principle
Intended and non-intended use Intended use STULZ Free-Air-3-IN units are designed for cooling shelters / rooms suitably protected from weather. Their use allows to eliminate problems caused by high internal temperatures. STULZ Free-Air-3-IN units have to be installed internally on the wall of the shelter or cabinet to be conditioned, whose internal side is not accessible to the general public (see DIN EN 60335-2-40, paragraph 3.119). -
Page 11: Component Lay-Out
To get a cooling effect from Free-Air-3-IN working, it is absolutely necessary that outside temperature is lower than inside temperature. Free-Air-3-IN units must not be installed and used in other positions than the one for which they have been designed. STULZ is not liable for any damage resulting from non-compliant installations. - Page 12 F r e e - A I r - 3 - I N Keypad Air Filter Electrical Box Airflow EN/02.2018 © STULZ SpA – all rights reserved...
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Page 13: Working Modes
Working modes Free cooling When enabled by the electronic controller, the fans inside Free-Air-3-IN unit suck external air and blows it directly into the room to be conditioned. Fresh air flow is regulated by the electronic controller modulating fan speed. - Page 14 EEPROM, so that it is permanently stored even in case of power failure. C102 is housed inside the electrical panel and can control one Free-Air-3-IN unit. A keypad is connected to C102 to display working conditions, working state of the unit and possible alarms.
- Page 15 Pressure connection: ø 6 pipe Connection : Contact 3-1 opens when the differential pressure exceeds the preset value. At the same time contact 3-2 closes. The signal is transmitted through this contact. © STULZ SpA – all rights reserved EN/02.2018...
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Page 16: Unpacking And Inspection
With ex works delivery conditions, carrier is the sole responsible for any damage caused during transport. STULZ is not responsible for damages to the goods caused by the carrier, but it will do everything in its power to assist clients on those situations. -
Page 17: Storage
Never work on the unit without disconnecting all power supplies before. Prior to drilling holes or making cuts on the cabinet, make sure that holes, screws, cables, etc. do not interfere with the equipment which has already been installed. © STULZ SpA – all rights reserved EN/02.2018... -
Page 18: Positioning And Mechanical Installation
F r e e - A I r - 3 - I N 5.1. Positioning and mechanical installation 1. Free-Air-3-IN units must be installed inside the room to be conditioned. 2. Check that: • There is space enough for an easy application, installation and maintenance; it is necessary to have a minimum distance from the floor of 200 mm and also from the top of the unit of 200 mm. - Page 19 (on request) to be applied on the fixing holes on the later side of the unit and into the wall. ATTeNTION Do not block off circulation of air intake and/or expelled by the Free-Air-3-IN. Fixing bracket with L shape (supplied by STULZ)
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Page 20: Electrical Connections
2. Interrupt power supply before working on the system: make sure that the main switch is turned off and the system is isolated from power mains; make sure also that all power switches and control fuses in the electric system have been turned off. EN/02.2018 © STULZ SpA – all rights reserved... - Page 21 SELV type power source (voltage limit 42 Vdc/ac). The digital inputs of the controller must be connected to voltage-free contacts. Please refer to use and maintenance manual part 2 for more information. Supply cable passage © STULZ SpA – all rights reserved EN/02.2018...
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Page 22: Start-Up
CONNeCTION AND POSITIONING OF TeMPerATUre PrOBeS INFOrMATION Free-Air-3-IN units are provided with 2 PTC probes: S1 for internal temperature, S2 for external temperature, supplied loose. Their cables are 8 m long with minifit termination on one end. Must be positioned suitably and connected during installation, as follows. -
Page 23: Other Tests (Facultative)
The ON-OFF key on the C102 display is only used to put the unit in stand-by. It must not be thought to be a safety component to turn the unit off prior to performing maintenance. © STULZ SpA – all rights reserved EN/02.2018... -
Page 24: Maintenance
7.1. Safety instructions Start-up and maintenance of Free-Air-3-IN units might be dangerous if they are not carried out with the same precautions used for apparels with moving parts and electric components. Installation and intervention on units must be made in full compliance with specific national regulations for accident prevention, with particular reference on electric equipment. -
Page 25: Cleaning / Replacement Of Components
Use a vacuum cleaner to remove dust. Inner parts must be cleaned with a liquid detergent and air at a pressure not higher than 4 bar and with the unit suitably connected to ground. © STULZ SpA – all rights reserved EN/02.2018... -
Page 26: Information On Residual Hazards And Emergency Situations
Each faulty part must be repaired or replaced immediately. An officer-in-charge must insist on the use of safety procedures without tolerating or accepting any short-cuts, as this can cause harm to persons and equipment. EN/02.2018 © STULZ SpA – all rights reserved... -
Page 27: Fire Hazards And Toxic Substances
8.4. Fire hazards and toxic substances No direct danger of fire hazard. No toxic substances. © STULZ SpA – all rights reserved EN/02.2018... -
Page 28: Uninstalling And Disposal Of The Unit
• Metals • Insulation and sound-absorbing materials • Electric and electronic components • Cables and wiring • Plastic Parts - Plastic parts that are important in terms of weight are the following: EN/02.2018 © STULZ SpA – all rights reserved... -
Page 29: Technical Data And Drawings
External sound pressure level* db(A) Power consumption at nominal conditions 0,42 Nominal operating current (NOA) Max conditions Max air flow 5400 Max power consumption 2 x 0,39 Max operating current (MOA) 2 x 8 © STULZ SpA – all rights reserved EN/02.2018... - Page 30 F r e e - A I r - 3 - I N Layout of FCL70 EN/02.2018 © STULZ SpA – all rights reserved...
- Page 31 STULZ Top Service – more than quick emergency assistance Advice Maintenance Implementation Test Center Technical Climate Customized Service-Portal For general questions about our products and services, you can reach us on weekdays from 8.30 – 17.30 at phone 0039 045 6331615.
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