DUCTED SPLIT AIR CONDITIONERS GCUN-A/GDS-A SERIES

Transcription

1 DUCTED SPLIT AIR CONDITIONERS GCUN-A/GDS-A SERIES Range 3.6 To 36.5 Tons 50Hz R22

2 TABLE OF CONTENT General features Page 3 Components features Pages 3 to 5 Compressors Condensers Condenser fans Evaporators Evaporator fan and drive Casing-Structure Electrical control panel System protection Technical data Pages 6 to 7 R-22 Extended capacity performance data Pages 8 to 13 Evaporator fan performance data Pages 14 to 16 Sound Data Page 17 Electrical Data & Optional features Page 18 Wiring Diagrams Pages 19 to 22 Units drawings and dimensions Pages 23 to 26 2

3 GENERAL FEATURES GAMI ducted split unit air conditioners are designed and manufactured with the following characteristics. Operating efficiently with R-22. Operating up to 52 C ambient temperature due to efficient size of condenser coil. Easy maintenance as access is provided for all the operating items. Thermostatic expansion valve as standard for all the models,to ensure efficient operation even at variable load conditions. The evaporator fan motor and the pulleys are set for 125 pa external static pressure. The Unit is provided with 1 G2 permanent washable filter as standard feature. FEATURES Operating at low noise and vibration level. Evaporator side has 10 mm thick,closed cell rubber type with aluminum foil insulation. Adjustable evaporator fan drive set for easy air flow adjustment. Easily accessible sight glass at the refrigeration circuits indicates the proper refrigerant charge and operation. COMPONENTS FEATURES 1. COMPRESSORS The compressors are hermetic scroll. Scroll compressors have the following characteristics High efficiency Low sound levels. Limited wear due to few moving parts and suction gas motor cooling. 2. CONDENSERS The condensers are manufactured of plain seamless copper tubes 3/8 O.D mechanically bonded to corrugated aluminum fins to ensure optimum heat transfer. All the condensers are designed for the unit operation up to 52 C ambient temperature. The coils are pressure leak tested by dry air pressure 30 bar(440 psig) under water. Unique ability to handle liquid refrigerant in the suction line. 3

4 FEATURES 3. CONDENSER FANS The condenser fans are axial type directly driven by external rotor motors. The motors are six pole, with class F insulation and IP 55 protection. The combination of an external rotor motor and axial fan, on rubber isolators,with a properly dynamically balanced impeller,gives an efficient, quiet and reliable operation. The motors are factory wired to the control panel. 4. EVAPORATORS The evaporators are manufactured of inner grooved seamless copper tubes 3/8 O.D mechanically bonded to louvered aluminum fins to ensure optimum heat transfer. Seamless copper tube suction headers and properly sized distributor at the refrigerant inlet along with the thermostatic expansion valve ensures smooth and reliable operation. The drain pan of the unit is also manufactured with the same way as standard. The evaporator side of the unit is insulated with closed cell rubber type 10 mm thickness insulation. The structure permits easy access to all the working parts of the unit,so the maintenance of the unit is very easy. 8. ELECTRICAL CONTROL PANEL The unit is controlled by a PLC (as optional) feature. The electrical panel enclosure is made from galvanized sheet metal electrostatic powder coated. The panel is located at the evaporator side of the unit and is being cooled by the unit cool air. Access to the panel can be made while the unit is working without any disturbance in the operation of the unit. All the evaporators are rated as per AHRI 410 standard. The coils are leak pressure tested by dry air pressure 30 bar(440 psi) under water. 5. UNIT LEAK TEST After assembly, unit is being leak tested with helium to ensure 2gr/year leak proof level. 6. EVAPORATOR FAN AND DRIVE The evaporator fan is forward curved centrifugal DIDW,statically and dynamically balanced,complete with shaft, self aligning and permanently lubricated ball bearings. The fan is driven by a single speed,4 pole,insulation class F and IP54 protection motor TEFC. The motor is factory wired to the control panel where a dedicated contactor is located, and is protected by an overload relay. The group of fan and motor is located on a rigid base which is isolated from the rest of the unit by rubber vibration isolators. 7. CASING/STRUCTURE. The unit casing is made of zinc coated galvanized steel sheets conforming to ASTM A653, electrostatic powder coated with approximate 75 microns coat,to ensure more than 1000 hours endurance at salt spray test as per ASTM B117. 4

5 In the control panel the following are included. 9. SYSTEM PROTECTION Separate contactor with overload relay for each compressor. Separate contactor with overload relay for the evaporator fan motor. 24 V AC transformer to supply for the control circuit and also thermostat power supply. Phase loss and phase rotation protection device Power and control terminal blocks. The safety features which are standard for our units and factory installed are: Low suction pressure switch High pressure switch with manual rest. Compressor (s) overload Evaporator fan overload. Phase loss in the power supply. FEATURES 5

6 TECHNICAL DATA 6

7 TECHNICAL DATA 7

8 KWt Total Cooling Capacity KWs Sensible Cooling Capacity KWe Compressor Power Input 8

9 KWt Total Cooling Capacity KWs Sensible Cooling Capacity KWe Compressor Power Input 9

10 KWt Total Cooling Capacity KWs Sensible Cooling Capacity KWe Compressor Power Input 10

11 KWt Total Cooling Capacity KWs Sensible Cooling Capacity KWe Compressor Power Input 11

12 KWt Total Cooling Capacity KWs Sensible Cooling Capacity KWe Compressor Power Input 12

13 KWt Total Cooling Capacity KWs Sensible Cooling Capacity KWe Compressor Power Input 13

14 FAN PERFORMANCE DATA *Highlighted data are with standard motor operating range. Outside the highlighted area, larger motor size to be used 14

15 FAN PERFORMANCE DATA *Highlighted data are with standard motor operating range. Outside the highlighted area, larger motor size to be used 15

16 FAN PERFORMANCE DATA *Highlighted data are with standard motor operating range. Outside the highlighted area, larger motor size to be used 16

17 SOUND DATA *Actual Sound Pressure data should be measured. *Above Sound Power data are indicative only. 17

18 ELECTRICAL DATA Optional Features 1. Use of PLC as control system. 2. Electric heaters with controls built in the unit. 3. IP55 evaporator fan motor 4. Condenser coil guard 5. Low ambient kit 6. Low noise condenser fan and motor 7. Copper fins 8. Here site coated fins 9. Hydraulic coated fins Aluminum filter 18

19 Models-GCUN 04 + GDS04 to GCUN 12 + GDS 12 Control Circuit WIRING DIAGRAMS Power Circuit 19

20 Models-GCUN 13 + GDS13, GCUN 15 + GDS 15 Control Circuit Field Installation WIRING DIAGRAMS Power Circuit 20

21 Models-GCUN 18 + GDS18 to GCUN 30 + GDS 30 Control Circuit Field Installation WIRING DIAGRAMS Power Circuit 21

22 Models-GCUN 35 + GDS35, GCUN 40 + GDS 40 Control Circuit Field Installation WIRING DIAGRAMS Power Circuit 22

23 DRAWINGS-DIMENSIONS 23

24 DRAWINGS-DIMENSIONS 24

25 DRAWINGS-DIMENSIONS 25

26 DRAWINGS-DIMENSIONS 26

27 P.O. Box : 28131, ICAD-1, Mussafah, Abu Dhabi UAE Tel : Fax : info@gami.ae Website: Specifications in this catalogue are subject to change without notice in order that may bring latest innovations to the customers. GULF AIRCONDITIONING MANUFACTURING INDUSTRIES L.L.C.