Stulz SplitAir4 Original Instructions Manual

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SplitAir4

Original instructions

Air Conditioners

Index 39B

Issue 10.2021

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Page 1 SplitAir4 Original instructions Air Conditioners Index 39B Issue 10.2021...
Page 2 SX L - O R I G I N A L I N S T R U C T I O N S A B O U T S T U L Z 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 5: Table Of Contents
10. Uninstalling and disposal of the unit................74 11. Options ........................75 11.1. Protective treatment on heat exchangers – TREATS ..............76 11.2. Electric reheat – EH ..........................76 11.3. Air filter ePM10 50% (G4/ EN779) – G4FS ................76 © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 6 11.11.Stainless steel casing - PAKIN ......................84 11.12.Seaworthy case packaging - SEAPACK ..................84 STULZ reserves the right to update the product and the relevant manual without having to update products and manuals sold previously except under exceptional circumstances. Contact your local STULZ partner when requesting or receiving any updates of instruction manuals or corrections when which are considered to be integral parts of the manual.
Page 7 It must not be considered unsuitable merely because it has not been updated following developments in design and manufacturing methods. STULZ reserves the right to update the product and the relevant manual without having to update products and manuals sold previously except under exceptional circumstances.
Page 8: Introduction
/www.stulz.it/it/azienda/media/informazioni-generali/ 1.2. Safety 1.2.1. Symbols used in the manual RISK OF INJURY FOR OPERATOR AND POSSIBILITY OF DANGER DAMAGING THE UNIT INFORMATION OR WARNING OF CAUTION IN CARRYING ATTENTION OUT A PROCEDURE EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 9: Labels
Enthalt fluorierte Treibhausgase - Contient des gaz a effet de serre fluores Kyoto Protocol Empty Space Empty space for noting additional Refrigerant charge on the site GWP: R134a=1430, R407C=1774, R410A=2088, R404A=3922, R1234ze=7, R513A=631 | Gas added © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 10: Safety Instructions
4 EN 378-1:2016). Consequently only informed personnel can may stay near the unit; it’s believed that, in case of fire, this personnel is aware of the inherent risk of the unit. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 11: Attachments
(i.e. gloves, glasses, helmet, shoes), according to the indications of safety manager and applicable regulations. • The unit may only be used to cool according to the STULZ specification. • Before any maintenance operation, read and follow instructions in the corresponding chapter.
Page 13: Maintenance
(metallic grids) of substances present on the installa- ting, bump, entrapm- the fans. Personnel trained and authorized. Wear tion site. ent, collision, inh- PPE. alation of dusts. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 14 Personnel trained and authorized. proximities. Overload of the electri- jections of melted Wear PPE. cal cabinet. Components becoming particle, effect on conductive in case the insulation is medical implants. damaged. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 15: Dismantling
Powered line even if the switch of the Electrocution Check the insulation of the power supply machine is on OFF. from the electrical panel. Be sure that the main switch will not be re-activated during maintenance. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 16: Safety Data
Hazardous decomposition At high temperature - Thermal decomposition giving toxic and corrosive products: products. gaseous hydrogen fluoride (HF), carbon oxides. Further information The product is stable under normal handling and storage conditions. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 17 EC classification / labelling information Dangerous preparation D. 1999/45/EC amended by D.2001/60/CE Further information The product does not need to be labelled in accordance with EC directives or respective national laws. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 18: Intended And Non-Intended Use
Their use eliminates problems caused by high temperatures, dirt and humidity present in the area where they are installed. The units of SplitAir4 family are divided in two parts: the motor- condensing unit must be installed outside the room to be conditioned and it's designed to operate with compressor always in upright position.
Page 19: Handling And Storage
3. Handling and storage 3.1. Unit receipt STULZ products are delivered ex-works. All units have been individually inspected in all their components and been carefully packaged before the delivery. Immediately inspect the unit upon receipt of the goods. • Make sure that it has been transported in the correct position. Note any unsuitable shipping conditions on the shipping document.
Page 20 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 21: Precautions When Handling The Unit
(i.e. gloves, glasses, helmet, shoes) Handle these units, when they are packaged, using a fork lift. When they are not packaged, use a hoisting machine equipped with cables or chains suited for supporting their weight. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 22: Storage
Use original packing to ship the air conditioner to any other destination If packing disposal is necessary, we remind to dispose different materials suitably (see chapter "10. Uninstalling and disposal of the unit") EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 23: Description
According to the technical data sheet SXL = SplitAir4 - In line air flow SXG = SplitAir4 - In line air flow with adjustable fins SXD = SplitAir4 - Down flow © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 24 According to the technical data sheet SXO = External split ON-OFF Type code - Free cooling module Free cooling module Size SXF 80 80 = 4 - 8 kW A5 = 10 - 14,5 kW EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 25 Z lose their original meaning and act as the progressive number for special versions. Every SXx unit is composed by the external unit SXO and the internal unit SVI/SVD/SVG; if free cooling mode in enabled, the free cooling module SXF is also included. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 26: Component Lay-Out And Operating Methods
Cable entry holes are located on the right side of the unit on the top of the right panel near the electrical box, and the refrigerant connectors to the internal unit are on the lower part of the right panel. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 27 Internal Unit Differential pressure switch Refrigerant connectors Filter Internal Unit + Free Cooling Module in cooling Main switch Free cooling module Damper Internal Unit + Free Cooling Module in free cooling © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 28 Layout internal unit with grille with adjustable fins (ceiling version) Layout internal unit - Wall installation Wall installation of stand- Wall installation of Wall installation of standard unit ard unit with displacement SVI unit with grille with adjustable fins configuration EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 29 SX L - O R I G I N A L I N S T R U C T I O N S Layout external unit Electrical box Microchannel Condenser Thermostatic Fans Compressor Connectors valve External unit size 1 External unit size 2 © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 30 According to the signal of humidity inside the room, supplied by the optional humidity probe ACTRHCM, air conditioner SEC.Blue controller reduces evaporator fan speed. Consequent air flow reduction causes a higher temperature difference between inlet and outlet air, helping condensation of humidity in it. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 31: Refrigerant Circuit
Components of both circuits are connected together by copper piping, appropriately welded to ensure a greater seal. The two refrigerant circuits of SplitAir4 internal and external parts must be connected each other in order to realise a complete circuit. Copper piping between the two parts have to be provided by the installer.
Page 32: Safety Components Of Refrigerant Circuit
Low pressure safety switch It stops compressor operation when the pressure inside the refrigeration circuit drops below the following value: 0,4 bar. The compressor starts when the pressure goes above 1,5 bar. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 33: Mechanical Components
The liquid receiver, positioned between the condenser and the condenser fan, it provides the required supply of liquid refrigerant and ensures maximum efficiency over varying operating conditions. The liquid receiver in SplitAir4 size 1 is 1,3 litres, while in SplitAir4 size 2 is 2,8 litres. 4.7.
Page 34: Motors
ATTENTION: With main switch, the power supply cables between the connection terminals of the customer and the main switch are always under voltage also if the main switch is open. The supply cables are identified with the symbol below (high voltage). EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 35 SEC.Blue I/O Controller There are two electronic boards in a SplitAir4: one in the internal unit and the other in the external unit. The microprocessor-based electronic board is equipped with a set of terminals which are necessary to connect the board to the controlled devices (e.g.
Page 36 For controller input / output assignation, please refer to the electrical diagram on manual part 2, specific for each unit. SEC.Blue Internal Unit SLAVE USER Accessory ACTHKEY Communication with (optional) the external unit Sequencing Keypad (optional) EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 37: Technical Data
3744 and declared at the following conditions: at 2 m distance from unit, in free field, with the unit positioned on a reflective base, with the unit operating at nominal conditions and at full load, for the standard unit (without options). © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 38 230/1 230/1 230/1 230/1 230/1 230/1 Power consumption* 0,17 0,20 0,21 0,42 0,44 0,44 Compressor Nominal voltage V/ph 400/3 230/1 400/3 230/1 400/3 230/1 400/3 230/1 400/3 230/1 400/3 230/1 Power consumption* EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 39 230/1 230/1 230/1 Power consumption* 0,16 0,25 0,32 0,46 Air flow in free cooling mode 1200 2300 2350 3300 Air flow in free cooling mode with ACTODALFCLxx 1000 1900 1950 2850 © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 40: Drawings
SX L - O R I G I N A L I N S T R U C T I O N S 5.3. Drawings Internal unit size 1 (SVI40 / 80) Internal unit size 1 (SVI40 / 80) with free cooling module 1160 EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 41 SX L - O R I G I N A L I N S T R U C T I O N S Internal unit size 2 (SVIA0 / A2) 1016 1035 1040 1000 Internal unit size 2 (SVIA0 / A2) with free cooling module 1016 1370 1000 1040 © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 42 SX L - O R I G I N A L I N S T R U C T I O N S Internal unit SVD size 1 (SVD40 / 80) Internal unit SVD size 2 (SVDA0 / A2) 1016 1084 1025 1040 EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 43 SX L - O R I G I N A L I N S T R U C T I O N S Internal unit SVG size 1 (SVG40 / 80) Internal unit SVG size 2 (SVGA0 / A2) 1016 1035 1040 1000 © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 47: Installation
The rear side of the indoor unit must be installed with a minimum distance from the wall, please refer to the measures indicated in the drawings in paragraph "Drawings". © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 48 SX L - O R I G I N A L I N S T R U C T I O N S Indoor unit - Vertical installation Air filter Deflector, supplied as standard with the internal unit EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 49 • Fresh air intake opening: it must be made according to the dimensions of the terminal adaptor plates of connection ducts. In all the cases, this opening has to be protected by rainproof grilles (accessory ACTGRxxSAL). Cut out dimensions are 515x260 in SplitAir4 size 1 and 715x310 in SplitAir4 size 2.
Page 50 Improper operation of this type can also cause irreparable harm to the compressor. Do not obstruct circulation of air being sucked into or expelled from the air conditioner. Positioning of the free cooling module EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 51 (see picture below). • For what concerns the electrical box installed inside the unit, the protection degree is IP54, for both outdoor and indoor unit. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 52 SX L - O R I G I N A L I N S T R U C T I O N S External view of internal unit, freecooling module and rainproof grille Internal unit + freecooling module Rainproof grille Indoor Outdoor Shelter wall EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 53: Refrigerant Connections
6.2. Refrigerant connections In order to create a closed circuit, refrigerant pipes of SplitAir4 internal and external parts must be connected together. As a consequence, copper pipes for the two liquid and gas lines must be suitably installed and connected to both parts.
Page 54 SX L - O R I G I N A L I N S T R U C T I O N S SplitAir4 units are pre-filled with refrigerant. After connecting refrigerant circuits of both parts, it might be necessary to complete refrigerant charge. When the charge is completed, check if traces of oil are present on the internal or external part, indicating a probable loss of coolant.
Page 56 Refrigerant connections Liquid/gas pipeline 30 m max horizontal equivalent length Gas pipeline (Sloping 1%) Siphons (mandatory) 5 m max vertical distance between two siphons Liquid/gas pipeline A + B < 30 m EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 57 (with an equivalent depression, the evaporation is at ambient temperature). The vacuum pump must be chosen according to the system where the vacuum must be created © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 58 Atmospheric pressure: pressure generated by atmosphere weight (around 1 bar). Overpressure [bar(g)]: prevalent pressure in the cooling system. Vacuum: state around 0.02 - 0 bar in a close system. There is a different ambient pressure of around 0,98 - 1 bar. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 59 Open the valves from (1) to (5). Close the valve (6). 2. Creation 1-2 mbar Activate the vacuum pump, until reaching the value of 0,3 mbar absolute. The pump is turned off absolute when this value is reached. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 61: Condensate Drain
SX L - O R I G I N A L I N S T R U C T I O N S INFORMATION If it's necessary to refill oil, please contact STULZ offices. 6.3. Condensate drain During the cooling cycle, part of the air humidity condenses on the evaporator. The condensate is collected in the tank under the heat exchanger and must be drained outside with a tube (not supplied by STULZ).
Page 62: Electrical Connections
(check interconnection diagram on manual part 2). These cables must be compliant with current standards. • Verify carefully the polarities of DC power supply, according to the wiring diagram on manual part 2. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 63 For kind and section of this cable, please refer to the interconnection diagram in manual part 2. DANGER Provide proper sealing to the hole in cabinet wall for this cable, to prevent any water (rain) infiltration. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 64 The connecting cable is a pin-to-pin cable with RJ11 plug and it's not supplied with the unit, but available as STULZ accessory ACTSEQCxxM. To ground shielded cables, if any, use the insert near the connector of the outdoor unit (see image below).
Page 65 For connections between internal and external unit, please see SEC.Blue I/O Controller, paragraph "Electrical components of protection and control". Electrical connections size 1 Internal unit with AC fans Main power supply Communication cable Power supply to the internal unit © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 66 Electrical connections size 2 Internal unit with AC fans Communication cable Main power supply Power supply to the internal unit Internal unit with DC fans Main power supply Communication cable Emergency 48 VDC power supply EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 67: Start-Up
4. Check, while the unit is running, that the supply voltage remains within the values indicated on the technical name-plate; 5. Check that the unit works according to the set logic. 7.3. Switching off To switch off the unit, turn off all the power supplies. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 68: Maintenance
Product intended life time is variable and dependent on the application (eg. On/Off cycling due to load vari- ability, annual working hours, cleaning of exchange fluids, operating temperatures, etc.). EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 69: Air Circuit
• On the bottom side of the evaporating unit, open the panel nearest to the rear side. To remove the filter, rotate the proper locking device. • Extract the air filter and replace it. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 70 Spare filters must have filtering medium with the same thickness and density as the original one. A set of spare filters can be ordered to your local STULZ service partner. Replacing free cooling damper motor (if free cooling module is present) To replace the motor of the free cooling damper, unscrew the 2 fixing screws of the damper motor box on the right side of the free cooling module.
Page 71: Refrigerant Circuit
(F-gas). Certified personnel and companies (according to Reg. 303/2008) provides regular leak testing (according to Reg. 1516/2007 and Reg. 1497/2007) and maintain records of maintenance activities in a dedicated log book. If a leak is detected: © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 72: Troubleshooting
STULZ service unit is not working Controller faulty Contact STULZ service ALARMS ON THE DISPLAY 4. Component x Anomalous absorbed current by component x Contact STULZ service thermic Defective protection Contact STULZ service EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 73 Replace it with a pin-to-pin cable Wrong setting of sequencing jumpers Contact STULZ service Wrong setting of sequencing parameters Contact STULZ service Sequencing part of SEC.Blue controller is damaged Contact STULZ service © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 74: Uninstalling And Disposal Of The Unit
The following are the instructions for proper disposal of the unit during the various phases of its life. For further clarification or additional information, please contact info@stulz.it. INFORMATION To ensure proper and safe disposal activities, operator must equip themselves with the necessary PPE including: anti-cut gloves, oil resistant gloves, heat resistant gloves, safety footwear, safety eye-wear against liquid and gas splashes.
Page 75: Options
- CRA + SOFTM + VCC (CRA) -CRA+EH -CRA+VCC+EH Notes: SOFTM NOT SOFTM NOT SOFTM -> NOT AVAIL- AVAILABLE IN AVAILABLE IN ABLE R134a UNITS SXL/G/ UNITS SXL/G/ SOFTM -> NOT AVAILABLE R134a © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 76: Protective Treatment On Heat Exchangers - Treats
The heater is always active when the unit is powered and the compressor is off. INFORMATION It's possible to install Winter kit option only in the units with refrigerant R407C. EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 78: Crankcase Heater For Compressor - Cra
3744 and declared at the following conditions: at 2 m distance from unit, in free field, with the unit positioned on a reflective base, with the unit operating at nominal conditions and at full load, for the standard unit (without options). EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 79 2300 3300 Evaporator fan in direct current DC power supply nominal voltage V DC DC power supply: tolerance on voltage V DC 36÷57 36÷57 36÷57 36÷57 Power consumption* 0,18 0,22 0,33 © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 80 Ø16 x 1 Ø18 x 1 Ø22 x 1,5 Ø28 x 1,5 Table: Additional charge of R134a refrigerant for piping distance beyond 5m (maximum 30 m). Values applying with condensation T = 50°C EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 81: Soft Start For Three-Phase Compressor - Softt
Overload and over-temperature are time-based conditions that may require waiting for some additional cooling time, before reset is possible. Control terminal description The device contains eight control terminals on the front of the controller. These control terminals are described below. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 82 Start time (current limit or soft start) Soft start initial torque setting (when selected) DIP switch number DIP switch number Initial torque % LRT Current limit 15 % Soft start 25 % 35 % 65 % EN/39B/10.2021 © STULZ SpA – all rights reserved...
Page 83: Soft Start For Single-Phase Compressor - Softm
With SOFTM option, the working limit of the unit is 45°C external temperature. The soft start is installed inside the e-box on the supply line to the compressor. Its purpose is the reduction of compressor starting current and torque. © STULZ SpA . – all rights reserved EN/39B/10.2021...
Page 84: Stainless Steel Casing - Pakin
11.11. Stainless steel casing - PAKIN With this option external panel and fixing flanges of the units are made of stainless steel AISI 304. As standard, the unit are available in various colours. Contact Stulz office for more information. 11.12. Seaworthy case packaging - SEAPACK Wooden packaging with special treatment suitable for sea freight.
Page 85 Contáctanos Zapopan - Matriz Cancún - Centro de distribución Periferico 2507, interior 14 y 15. Av. Kabah Supermanzana #93 Sinergia Parque Logístico, Manzana 19 Lote 4-02Local B5 de Zapopan, Jalisco. Bodegas Kabah. 800 841 3730 800 890 0808 33 1654 1210 998 840 0937 Tijuana - Centro de distribución Culiacán- Centro de distribución...

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Stulz SplitAir4 Original Instructions Manual

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