Инструкция на Прецизионные кондиционеры DeLonghi серии ACCURATE AXО, AXU, AWO, AWU

Текст инструкции

1. Стр. 1 USER AND MAINTENANCE MANUAL

   precision air-conditioners ACCURATE Direct expansion Direct expansion AXO air outlet from the top AXU air outlet from the bottom Water-cooled AWO air outlet from the top AWU air outlet from the bottom GB frame 1: 07-10 frame 2: 15-18 frame 3: 20-26-29 frame 4: 39-30-40-50 frame 5: 55-60-70

2. Стр. 3 INDEX

   I A U I A General characteristics 2 U I A Calibrating the dirty filter sensor 12 U I A Unit configuration 2 U I A Temperature and humidity probe 13 U I A Air flows 5 U I A Servomotor and hot water valve 13 U I A Rating plate 6 U I A Electrical specifications 14 U I A General technical data 6 U I A…

3. Стр. 4 DOCUMENTS

   DOCUMENTS ENCLOSED WITH THE UNIT Each unit is delivered complete with the following documents: • Air-conditioner installation manual; • Air-conditioner user and maintenance manual; • Instruction manual for the microprocessor controller; I A • Wiring diagram; • List of spare parts; • CE declaration…

4. Стр. 5 Digit 11

   0 1 Mechanical thermostatic valve Electronic thermostatic valve No post-heating STD heaters with 3 steps Hot water post-heating coil Hot water post-heating coil + STD heaters with 3 steps Hot gas post-heating coil Hot gas post-heating coil + STD heaters with 3 steps No humidity and condensate…

5. Стр. 6 AIR-COOLED DIRECT EXPANSION UNIT - VERSION

   AX* WATER-COOLED DIRECT EXPANSION UNIT - VERSION AW* Refrigerant circuit All models have a single refrigerant circuit, and in some cases two circuits. See the DIGIT on the previous page. The compressor pumps the hot refrigerant gas into the outdoor condenser. The liquid refrigerant then flows to a…

6. Стр. 7 I

   AIR FLOWS The ACCURATE air-conditioners are available in different configurations, based on the air intake and outlet positions; the main distinction is between OVER and UNDER units. The versions defined as OVER with air outlet from the top gene- A rally have the air intake at the front, rear and/or…

7. Стр. 8 RATING PLATE

   The air-conditioner rating plate is positioned on a panel inside the unit, and provides the following information: - Model and serial number of the unit; - Power supply (voltage, phases and frequency); - Power input of the unit and the individual components; - Current input of the unit and the…

8. Стр. 9 ACCURATE AW water cooled

9. Стр. 10 COMMISSIONING AND TESTING

   EMPTYING THE REFRIGERANT CIRCUIT AND CHARGING WITH REFRIGERANT The water-cooled units (AWO, AWU) are already charged with refrigerant, either R407C or R22 (check the rating plate on the unit and the compressors to see which type of refrigerant is I A used). The air-cooled units (AXO, AXU) are…

10. Стр. 11 OPERATION AND CONTROL

    WATER-COOLED UNITS Water in an open circuit If the temperature of the cooling water is not controlled and may fall below 25°C, a pressure control valve is required (available as an accessory) for each condenser; in this case, the supply pressure must not be less than 200 kPa (2 bar). IMPORTANT: do…

11. Стр. 12 INSTRUMENTS AND ALARMS

    The air-conditioner is fitted with the following instruments: - High pressure switch/switches F1 with manual reset (one on each refrigerant circuit); - Low pressure switch/switches F2 with automatic reset (one on each refrigerant circuit); - Air flow sensor F3 and dirty filter sensor F4…

12. Стр. 13 CALIBRATING THE CONTROL AND SAFETY DEVICES

    After starting the air-conditioner, make the following adjustments - Room temperature (cooling and heating set point). - Relative humidity (set point for humidification and dehumidification); - Dirty filter differential pressure switch: see the paragraph on "CALIBRATING THE DIRTY FILTER SENSOR". I A…

13. Стр. 14 CALIBRATING THE AIR FLOW SENSOR

    The differential pressure switch F3 must be activated if the fan is not working (when there is one fan) or one of the fans is not working. The factory calibration of the differential pressure switch to control the air flow (F3) is 0.5 mbar (=50Pa). As the difference in pressure between the fan…

14. Стр. 15 TEMPERATURE AND HUMIDITY PROBE

    The figure shows the optional temperature and humidity probe. If having to replace the probe, release the white plastic cover by pressing point (A) with a screwdriver or a pointed object; lift the cover (B) to access the fastening screws (C) and the terminals (D). I A For the probe electrical…

15. Стр. 16 ELECTRICAL SPECIFICATIONS

16. Стр. 17 models

    V/ph/Hz n° kg/h Modulating humidifier kW OA FLA 07 - 10 15 - 18 20 - 26 - 29 39 - 30 - 40 - 50 55 - 60 - 70 230/1/50 400/3N/50 400/3N/50 400/3N/50 400/3N/50 2,25 3,75 3,75 3,75 6 9,8 5,5 5,5 5,5 8,7 - models V/ph/Hz n° kW Compressors OA FLA LRA 400/3N/50 400/3N/50 400/3N/50 400/3N/50 400/3N/50…

17. Стр. 18 Checking and cleaning the condenser coils

    Authorised personnel: maintenance mechanic Checks: In the hotter period, when the unit operates at maximum capacity, the condensing coils must be able to offer the maximum heat exchange. Normally installed outside or communicating with the outside, these may pick up dirt such as paper, dry leaves…

18. Стр. 19 ELECTRIC HEATERS

    U I A U I A ELECTRIC HEATERS The overall power of the electric heaters is divided into a number of elements, each with a power of 2/3/4 kW. The colour of the wires on each element has the following meaning: • BLACK wire = low power element (0.7/1/1.3 kW); • WHITE wire = high power element (1.3/2/2.7…

19. Стр. 20 HUMIDIFIER

    I A SYSTEM COMPONENTS Upon request, the air-conditioning unit can be fitted with an immersed electrode humidifier (versions D and H). Humidifier interface board:A3; (inside the electrical panel). 2 Current transformer TA1 (inside the electrical panel) for measuring the current input of the steam…

20. Стр. 21 TERMINAL AND BOARD CONFIGURATION

    U I A U I A FILL AND DRAIN ASSEMBLIES To ensure the correct operation of the humidifier, the supply/fill and drain assemblies need to be inspected periodically. Proceed as follows: - completely drain the water from the boiler using the MANUAL CONTROLS on the controller A1; - disconnect the power…

21. Стр. 22 ROOM TEMPERATURE

    TOO LOW CAUSE The parameter settings on the microprocessor controller are not correct. The power of the heaters is not sufficient or the heaters aren't working. The hot water coil isn't working correctly. AMBIENT HUMIDITY TOO HIGH 20 English 01/07 SOLUTION See the controller manual. Check that the…

22. Стр. 23 CAUSE

    SOLUTION AMBIENT HUMIDITY TOO LOW The parameter settings on the microprocessor controller are not correct. Check the room temperature setting (see the control panel manual). Latent load lower than expected. Verificare la consistenza del carico latente. The humidifier isn't working. LOW OR NO AIR…

23. Стр. 24 HIGH COMPRESSOR

    DISCHARGE PRESSURE CAUSE A) Air or incondensable gas in the refrigerant circuit, seen by the presence of bubbles, despite measuring a high subcooling. B) Insufficient air flow-rate to the remote heat exchanger or air too hot Insufficient water flow-rate to the condenser or water too hot. Excessive…

24. Стр. 25 HIGH COMPRESSOR

    SUCTION PRESSURE CAUSE Thermal load higher than expected See “HIGH COMPRESSOR DISCHARGE PRESSURE”. Too much refrigerant in the circuit. Remove refrigerant from the circuit See “ROOM TEMPERATURE TOO LOW”. The air flow-rate is too low or null See “LOW OR NO AIR FLOW”. Liquid receiver outlet valve not…

25. Стр. 28 COD. 5787001000

    Dé Longhi Group - Via L. Seitz, 47 - 31100 Treviso (Italia)

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