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Summary of Contents for Carrier 50CJ
- Page 1 M A I N T E N A N C E I N S T R U C T I O N S Control Unit 50CJ Rated cooling capacity: 5 - 55 kW (W) - 50 Hz Rated cooling capacity: 5 - 47 kW (X) - 50 Hz...
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Page 2: Table Of Contents
10 - SERVICE INTERVAL SUMMARY TABLE ..........................24 11 - OPERATING READINGS ................................25 12 - REGULATIONS ..................................26 13 - OUTDOOR UNIT(S) (CL2) ASSOCIATED WITH 50CJ X ......................26 14 - RECEIVING THE EQUIPMENT ..............................26 15 - EQUIPMENT IDENTIFICATION ..............................26 16 - WARRANTY .................................... - Page 3 CONTENTS 23 - DIMENSIONS..................................... 30 23.1 - Models CL2 28 and 35 ................................30 23.2 - Models CL2 50, 65 and 75 ..............................31 24 - INSTALLATION ..................................32 25 - ELECTRICAL CONNECTIONS ..............................33 26 - SETTING THE CONTROL AND SAFETY DEVICES ........................ 33 27 - REFRIGERANT CONNECTIONS ..............................
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Page 4: Indoor Unit(S) (50Cj)
Introduction to the range: The 50CJ is a range of precision close control units that is specifically adapted to meet the air handling needs of computer and telecommunications rooms, and rooms for special purposes (electronic, sensitive storage, medical, clean rooms). -
Page 5: Receipt
In the event of missing items, the customer must provide the exact number of parcels delivered. Any damaged or missing items must be specified on the delivery note in the presence of the driver before signing the delivery note. These comments must be confirmed to the carrier by registered letter within three business days. The comments "conditional" and "pending unwrapping" shall have no value. -
Page 6: Handling
3 - HANDLING The unit must be lifted using slings or a spreader beam or be carried by a pallet truck and all four corners of the unit must be supported by wooden blocks. In all cases, the lifting point has to be at the base of the unit. The unit shall be handled by qualified personnel. Refer to the information given on the relevant label on the unit. IMPORTANT: The unit must be handled with care and kept upright. -
Page 7: Location Of Components
4 - LOCATION OF COMPONENTS 4.1 - W 5/8/12/16/27: Chilled water model 1- Filter 2- Disconnect switch 3- Control unit 4- Condensate draining 5- Cooling coil 6- Heating coil (optional) 7- Humidifier (option) 8- Fan motor assembly 9- Removable plate for hydraulic connections (bottom or right-hand side) 10- Control valve 4.2 - X 5/8/10/12/15/19/24/31/36/38/48: Direct expansion model... -
Page 8: Assembly/Air Flow Direction
4 - LOCATION OF COMPONENTS 4.3 - Assembly/air flow direction UNDER 1 OVER 3 OVER 4 OVER 5 5 - INSTALLATION: UNIT/FRAME/PLENUM 5.1 - Setting the unit in place - The unit must be placed on a flat, smooth surface which is as level as possible (ratio of approx. one to one thousand). - If the supply air is conveyed through a raised floor, the seal between the unit and the floor must be tight. - The unit need not be anchored to the floor if it is operated under normal conditions. - Provide sufficient space for maintenance around the unit. - The cabinet frame must rest fully on its contact surface. ■... -
Page 9: Connections
6 - CONNECTIONS 6.1 - Air connections ■ Indoor unit The air connection is made using rigid ducts in sheet steel or similar, fitted with a drilled connection flange. It is secured with self-tapping screws. A gasket should be fitted between the flange and the unit. For units to be fitted as UNDER models (air discharge to the ground), a support base is available as an option to enable this. If the raised floor allows, a single hole is required, in the raised floor itself, with the same dimensions as the base. Tightness will be ensured by fitting a gasket between the unit and the support frame. 6.2 - Hydraulic connections The hydraulic pipes must be routed through the plate provided for this purpose. UNDER OVER (removable bottom or right-hand side plate) (Routing on the right-hand side) 1 - Remove the precut foam panel, 2 - Drill the external panel,... - Page 10 Remote control + fault summary TRI 400 V-50 Hz-N+T power supply Note: - For all electrical connections, refer to the wiring diagram sent with the indoor and outdoor unit. - Electrical connection not supplied by CARRIER - Refrigerant pipe not supplied by CARRIER IMPORTANT: 50CJ (X 31, X 36, X 38, X 48) models have 2 outdoor units.
- Page 11 6 - CONNECTIONS ■ Table of the maximum lengths for refrigerant connections The tables below show the permitted lengths for the pipers and the corresponding maximum height difference. The values in the tables show the reduction in cooling capacity as compared to the nominal capacity as a percentage. X 5 + CL2 28 / 3/8" liquid line, 5/8" gas line X 8 + CL2 28 / 3/8" liquid line, 5/8" gas line Total length (m) Total length (m) Height difference (m) Height difference (m)
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Page 12: Electrical Connection
6 - CONNECTIONS 6.4 - Electrical connection - The cable must be protected by a grommet. - T he electrical connections and wiring must be set up as shown on the electrical diagram included with the unit and in accordance with applicable codes and regulations. - Make sure that electrical rating given on the unit's number plate matches that of the mains supply. - The unit must be connected to earth and the electrical supply must always be powerful enough to supply the necessary power. - The indoor and outdoor units each have their own power supplies. - T he electrical cable must be selected based on the necessary length, power, protection and operating mode, and in accordance with applicable codes and regulations. ■ INDOOR UNIT electrical specifications 3-phase 400 V + Neutral + Earth – 50 Hz Unit W X 31/36 X 38/48... -
Page 13: Technical Characteristics
7 - TECHNICAL CHARACTERISTICS 7.1 - Filters EN 779-2012 efficiency: M5 EN 779-2012 efficiency: F7 ISO16890 efficiency: ePM10 50% ISO16890 efficiency: ePM1 60% Thickness: 48 mm. Thickness: 48 mm Efficiency: 90% gravimetric Efficiency: 85% opacimetric Filter area: 2 x the face area Filter area: 1 7 x face area with a thickness of 48 mm Fire rating: M1. -
Page 14: Refrigerant Circuit Checks
7 - TECHNICAL CHARACTERISTICS 7.3 - Refrigerant circuit checks: X schematic diagram: 1 REFRIGERATING CIRCUIT X 5 to 24 2 REFRIGERATING CIRCUITS X 31 to 49 1 - Evaporator coil 4 - Dehumidifier filter 2 - Thermostatic expansion valve 5 - Condenser coil 3 - Compressor... -
Page 15: Heating Coil And Valve (Option)
7 - TECHNICAL CHARACTERISTICS ■ R410A refrigerant charges: Table 1 Charge in kg per circuit, distance between VERTICAL UNIT and CL2 CONDENSATION UNIT = 0 m Vertical unit X CL2 condensation CL2 28 CL2 28 CL2 35 CL2 35 CL2 50 CL2 65 CL2 75 unit CL2 50 CL2 65 CL2 65 CL2 75 Charge in kg 1,69 1,69 1,952... -
Page 16: Air Flow Rate Setting (Indoor Unit)
7.5 - Air flow rate setting (indoor unit) The air flow rate can be adjusted on-site directly via the control: - Parameter P155 (CCU Controller) - No control, inside the electrics box. ■ Min. air flow rate (m /h) for 50CJ W with electric heater and/or humidifier Unit W Min. air flow rate value (m³/h) 1000 1250... -
Page 17: Humidifier (Option)
7 - TECHNICAL CHARACTERISTICS 7.7 - Humidifier (option) The immersed-electrode humidifier is fitted with a microprocessor-based controller that adapts, within the allowable operating limits, to the physical and chemical properties of the water used. Voltage is applied to the electrodes immersed in the water; an electrical current passes between them, heating the water to boiling point. The water acts as an electrical resistance, ensuring continuity between the electrodes and a minimum of dissolved salts. Unit W W5/8/12 W 16/27 X unit X 5/8/10 X 12/15/19/24/31/36/38/48 Make/model KUE T1 COW21 KUE T2 COW21 Control voltage Without 9 V A valve Absorbed power in control circuit With 35 V A valve High power circuit voltage 3-PH/400 V 3-PH/400 V... -
Page 18: Electric Heater (Option)
Stage 2 12,0 Stage 1 3 x 1 3 x 2 3 x 4 Number of heaters x Power Stage 2 3 x 1 3 x 2 3 x 4 Total current 17,3 34,6 7.9 - Control Configurable CARRIER CCU Controller. For adjustment and parameter setting, refer to the corresponding manual. CARRIER CCU Controller... -
Page 19: System Start-Up
8 - SYSTEM START-UP All operations on the refrigerant circuit must be carried out in accordance with the applicable environmental regulations. After making the necessary electrical and hydraulic connections, carry out the system start-up and check the following steps: - Check the tightness of the electrical connections, - Check the hydraulic connections (direction of inlet/outlet connections), - Make sure the inside of the cabinet is clean and free of foreign bodies, - Check the electrical supply voltage and the ratings of the overload protections against the current ratings of each component, - Check the height of the trap, - Vent the air out of the coils via the bleed screws,... -
Page 20: Maintenance
9 - MAINTENANCE It is possible to remove the doors in order to facilitate access to the various components. For dual doors: Open the left-hand door using the centre latch and lower the 2 right-hand door targets (for dual doors). Pull out the pin and remove the hinge (detail A and B) Lift off the door (Detail C) DETAIL A DETAIL B DETAIL C... -
Page 21: Filters
9 - MAINTENANCE 9.1 - Filters Check the filters frequently when commissioning the unit. The rate at which they will clog will depend on how well the air circuits were cleaned. ■ Maintenance intervals The filter life depends essentially on the amount of dust in the air and the efficiency of the filtration system. The filtration quality cannot be maintained if the filter medium has been damaged during maintenance. We recommend that the filters be replaced once every two years, even in the case of moderate use ■ Replacing the filter elements When performing maintenance, it is important to avoid releasing and spreading the dust that has accumulated in the filter. Turn off the unit. Access the filters by opening the panels on the front. For sizes W 5/8/12, X 5/8/10 (Fig.1): - Press the lug and pull it towards you (no.1) to unclip it and release the filter. Note: The lug remains attached to the support bracket (no.2). -
Page 22: Humidifier
9 - MAINTENANCE ■ Cleaning procedure To access the electric elements, remove the removable side panel by turning the latch a quarter turn Accessing heating elements located behind the hydraulic coil. Cleaning using an air nozzle. To remove the heating elements: - Unscrew the bolt and remove the washer, and push the pin ... -
Page 23: Fan
9 - MAINTENANCE Procedure: Remove or wash the water supply valve. Check the inlet filter for clogging. If the pump malfunctions or becomes worn, it must be replaced. Inspect the water supply, steam supply and condensate drain pipes and replace them if necessary. CHARGING UNIT Range regulator In case of a fault on the humidifier (no steam produced), check the water conductivity: - it must be between 350 and 1250µS/cm. If frequent descaling is necessary, check the water hardness. It should be 15°f<TH<30°F Filling solenoid valve Water top-up Drain pump Water drainage 9.5 - Fan Check and retighten the connections once a year. ■ Removing the fan: - Remove the 4 screws holding the fan in place (no.1) to separate it from the air supply panel (no.2). 9.6 - Electrics box Retighten the connections once a year. -
Page 24: Service Interval Summary Table
10 - SERVICE INTERVAL SUMMARY TABLE Regular maintenance will keep the unit running at optimum performance levels. The values given in the table below are provided for guidance only. They do not take into account individual factors that can lengthen or shorten the unit's service life. COMPONENT AT COMMISSIONING 2-3 MONTHS 12 MONTHS Filters - Replace - Replace - Check and clean the condensate Cooling coil - Clean drains - Retighten the electrical Electric heater (option) - Check the connections - Clean connections - Check the components... -
Page 25: Operating Readings
11 - OPERATING READINGS Date/Time Extraction pressure (bar) Extraction temperature (°C) Compressor Condensation pressure (bar) Condensation temperature (°C) Gas/liquid inlet temperature (°C) Gas/liquid outlet temperature (°C) Heat exchange coil Air inlet temperature (°C) Air outlet temperature (°C) Water inlet temperature (°C) Water outlet temperature (°C) Plate heat exchanger Gas/liquid inlet temperature (°C) Gas/liquid outlet temperature (°C) Rated voltage (V) Voltage at terminals (V) Compressor absorbed current (A) Fan motor absorbed current (A) Mechanical inspection: tubes, fastenings. -
Page 26: Regulations
Check the unit for any damage or missing components upon delivery. Note any damaged or missing parts on the delivery slip. IMPORTANT: you must notify the carrier of any damage and/or missing parts by registered letter within three days of the delivery date. -
Page 27: Warranty
16 - WARRANTY The warranty is effective for a period of 12 months from the commissioning date, provided said date occurs within three months of the invoice date. It is effective for a period of 15 months from the unit invoice date in all other cases. NOTE: for further information, refer to the application of the CARRIER warranty. 17 - SAFETY RECOMMENDATIONS To protect against accidents while installing, commissioning and adjusting the unit, the following settings must be kept in mind: - Pressurised refrigeration circuit - Presence of refrigerant - Presence of voltage - Installation location - Temperature up to 150°C... -
Page 28: Weight And Handling
19 - WEIGHT AND HANDLING Now that you have chosen a location for your unit, you may begin installing it. Take into account the weight and dimensions of the unit (see Technical characteristics table "Dimensions"). IMPORTANT: raise the unit carefully and keep it vertical. 20 - OPERATING LIMITS The CL2 must be used within the following operating ranges: Minimum Maximum Outdoor temperature -15 °C +45 °C Evaporation temperature +20 °C +12.5 °C 21 - TECHNICAL CHARACTERISTICS Quantity Type SCROLL Compressor... -
Page 29: Electrical Specifications
22 - ELECTRICAL SPECIFICATIONS Voltage 400 V - 3 Ph - 50 Hz Compressor Maximum current 10,3 15,0 15,0 Fans Maximum current 0,46 0,97 0,92 1,94 Rated voltage of unit 400 V - 3 Ph+N - 50 Hz Total current 11,3 17,0 17,0... -
Page 30: Dimensions
23 - DIMENSIONS 23.1 - Models CL2 28 and 35 Anti-vibration mount Anti-vibration mount centre distance centre distance = 410 = 602 1035 Two Ø 8.2 mm holes for floor mounts 4 fixing points HM8 x 55 screws Detail A Position of holes for fixing the anti-vibration mounts to the floor. Outdoor air flow direction LIQUID line INTAKE GAS line Anti-vibration mounts are fitted to the heat pump using 4 x HM8 screws, 55 mm in length. -
Page 31: Models Cl2 50, 65 And 75
23 - DIMENSIONS 23.2 - Models CL2 50, 65 and 75 Anti-vibration mount Anti-vibration mount centre distance centre distance = 410 = 602 1035 Two Ø 8.2 mm holes for floor mounts 4 fixing points HM8 x 55 screws Detail A Position of holes for fixing the anti- vibration mounts to the floor. Outdoor air flow direction LIQUID line INTAKE GAS line Anti-vibration mounts are fitted to the heat pump using 4 x HM8 screws, 55 mm in length. -
Page 32: Installation
24 - INSTALLATION 1035 1000 Minimum 4 fixing points M8 screw Min. Installation on soft ground Installation on concrete ground Concrete foundations Concrete foundations Nothing should obstruct the free flow of air over the air-cooled exchanger. Adhere to the minimum distances shown above. Protect from prevailing winds... -
Page 33: Electrical Connections
25 - ELECTRICAL CONNECTIONS CL2 units conform to the requirements of the European Low Voltage Directive and, more specifically, with those of international standards EN 60335-1, EN 60335-2-40, EN 61000-6-1, EN 61000-6-2, EN 61000-6-3 and EN 61000-6-4. Always disconnect the unit before attempting to wire connections. Open the roof as shown above, make the electrical connections as per the wiring diagram supplied with the unit and tighten the terminals. -
Page 34: Refrigerant Connections
27 - REFRIGERANT CONNECTIONS Once the outdoor and indoor units have been installed, the refrigerant connections must be made to link the units. When doing this, apply the installation standards and carefully study the pipe diagram, ensuring the shortest distance and the smallest number of elbows. Likewise, avoid restrictions by ensuring the curves on the elbows are as shallow as possible (curve radius greater than 3.5 x Ø). Ø Maximum height 30 m Maximum equivalent length 50 m Maximum height 30 m Maximum equivalent length 50 m To calculate the equivalent length, take into account the accessories pressure drops. - Page 35 - To charge with R410A fluid, if it is not possible to fill the unit with all of the charge with the compressor off, power up and start the compressor (close the contact on the external control input): For CL2 connected to CARRIER air handling units: CL2 units are pre-charged. To this pre-charge, add the charge indicated in the air handling unit manual, plus the additional charge below, depending on the length of your pipes.
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Page 36: Commissioning
28 - COMMISSIONING - You can now restart the equipment and check that it is operating correctly. - Check the safety components. It is recommended to note the operating readings (table below) for the equipment, indicating the serial number and all other required data that appears on the identification plate. This enables the system efficiency to be checked and faults prevented. Date/Time CL2 operating readings System start-up date: Serial No.: Installer: Site of installation: □ □ □ Model: 28 □ □ Suction pressure Intake temperature °C Compressor Condensation pressure Condensing temperature °C Gas inlet temperature... -
Page 37: Care And Maintenance
2/ Impact on the greenhouse effect: GWP (Global Warming Potential) = 2088. - Users must have units containing over 3 kg of refrigerant periodically checked for leaks by qualified personnel (2 kg in France, decree and order of 7 May 2007). Regardless of the refrigerant charge in your system, CARRIER requires that this check be carried out in order to keep your system in good working order. - Users of any system containing over 3 kg of refrigerant (2 kg in France) are required to keep a log of the quantities and types of refrigerants used, added or recovered, and to include the dates and results of leak checks. -
Page 38: Troubleshooting
30 - TROUBLESHOOTING IMPORTANT: when carrying out repairs, always use original parts, paying particular attention to their installation, as all parts must remain in their original positions. Symptom Cause Solution a) Insufficient gas a) Look for leaks and top up the charge Condensation temperature too low b) Obstacle in the expansion component b) Check the expansion valve... - Page 40 Administrative number: EN7438387-06, 03.2020 - Replaces No.: EN7438387-05, 06.2019. Manufactured for Carrier SCS, Montluel, France. The manufacturer reserves the right to make changes to the product specifications without notice. Printed in the European Union.
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