Air Cooled Condensing Units - S.K.M Air Con

1 AIR CONDITIONING EQUIPMENTSKM Air Cooled Condensing UnitsACUV-N Series - R-13 4 aSKM Air Cooled Condensing UnitsACUV-N Series - R-134a1 ACUV-N Series Air Cooled Condensing UnitsSharjah Economic Excellence Award @skmairconR-134aRange 101 TR to 334 TR (354 kW to 1174 kW)SKM Air Cooled Condensing UnitsACUV-N Series - R-13 4 a2 IntroductionACUV-N Series environment friendly (R-134a) Air Cooled Screw Condensing unit are the latest innovation of SKM, designed and manufactured to provide utmost performance, efficiency, reliability, to meet the requirements and long life from Gulf s severe climatic ACUV-N Units are manufactured to meet the requirements of the gulf severe climatic ACUV-N Air Cooled Condensing unit are ideal for warehouses, large halls, schools, mosques, or wherever the requirement calls for a heavy duty unit with screw semi-hermetic series Air Cooled Condensing unit ( Semi-Hermetic Screw ) are available in 30 models covering nominal capacity ranges from 101 TR - 334 TR (354 kW to 1174 kW) in 50Hz and 60Hz.

2 SKM ACUV-N Air Cooled Condensing unit are rated in accordance with AHRI-365. SKM ACUV-N series Air Cooled Condensing Units are used for commercial and industrial applications where high efficient Condensing Units are needed to match an indoor central station AHUs or coils to get maximum performance advantages of split sytem with reasonable initial ACUV-N series provide efficient operation, wide range of design flexibility coupled with packaged concept requiring least on-site provides qualified service and stock of replacement parts in all major cities of the countries, Egypt, Jordan, and Pakistan. See back cover for details or call SKM. SKM Air Conditioning LLCYou name cool itThe following abbreviations are used throughout this By-pass Factorcfm.

3 Cubic feet per minuteEER .. Energy Efficiency RatioHz .. Hertzinwg .. Inches of water gaugekW .. Kilowattskg .. kilogramlbs .. Pounds weight ( British Units )L/S .. Liters per BTUH x 1000Ph .. PhasePa .. PascalsPD .. Pressure DropPI .. Power per MinuteTR .. Tons of Refrigeration = 12 MBh V .. VoltLegendACU V - 5 2 100 N YAir Cooled Condensing UnitPower Supply 5 : 50 HzNominal Capacity (TR)NomenclatureSemi hermetic Screw Compressor (R-134a)Frequency 6 : 60Hz V-Series No. of Refrigerant CircuitsPower Supply CodeY: 380V-415V/3Ph/50 HzP: 440V/3Ph/50 HzR: 380V/3Ph/60 HzE: 460V/3Ph/60 HzT: 220V/3Ph/60 HzContentsIntroduction ..2 General Features ..3 Control Panel ..5 Microprocessor Features ..6 Engineering Specification ..8-9 Capacity Ratings ..10-13 Selection Procedure.

4 14 Field Wiring Requirement Wiring Data ..17-19 Dimensional Data ..20-21 Loading Points .. Refrigerant Line SKM reserves the right to change, in part or in whole the specifications of its Air Conditioning Equipment at any time in order to add the latest technology. Therefore, the enclosed information may change without any prior CONDITIONING EQUIPMENTSKM Air Cooled Condensing UnitsACUV-N Series - R-13 4 aSKM Air Cooled Condensing UnitsACUV-N Series - R-134a3 CondensersCondenser coils are manufactured of seamless copper tubes mechanically bonded to aluminum fins to ensure optimum heat transfer. All coils are tested against leakage by air pressure of 450 psig (3100 kPa) under water. All standard coils are 3 or 4 rows/14 FPI, 3/8 ( mm) tubes. An integral subcooling circuit is provided to increase the cooling capacity, without additional operating cost.

5 For different application requirements, other optional condenser fin materials are available: Copper fins. Electrotinned Copper Fins. Copper finned coils with electro-tinned after manufacturing. Precoated Aluminum fins The pre-coated is hydrophobic polyurethane resin. This option provides substantial corrosion protection beyond standard coil construction. Aeris Guard Coil Coating The Aeris Guard Coil is a self etching high performance modified epoxy finish that is specifically designed to coat and protect Aluminum and Copper surfaces. In addition, the coating is ideal for the protection of ferrous and non ferrous ACUV-N series, all models, are restricted to a 14 FPI ( mm) fin spacing condenser coil. Gulf dust storms and the general level of available maintenance in Gulf countries ensures this condenser coil design shall provide long life and maintenance-free operation with the least possibility of operational blockage on the condenser.

6 Ample condenser surface and sensible air flow across the condenser ensures a low temperature differential between Condensing temperature and the high Gulf ambients making the ACUV-N Condensing Units perform efficiently and durably. General FeaturesThe ACUV-N series is a modern, diversified and environment friendly series of air Cooled Condensing unit which use R - 134a as complete ACUV-N Condensing unit provides an extremely rugged, heavy duty, long-life and energy efficient that will provide higher efficiency over a long and extended life. What makes ACUV-N series the pride of SKM products is the use of : Semi Hermetic Screw, heavy duty, energy efficient compressors. Totally enclosed, Class F insulated, IP55 protected condenser fan motor.

7 Heavy duty condenser optimised in design for long-life maintenance free operation. Cabinet construction specifically designed for Gulf climates. IP 54 Electrical panel. Factory installed, advanced and user friendly microprocessor based control system. Interface capability with major BMS protocols (option).The SKM ACUV-N series air Cooled Condensing Units are durable, dependable, strong, reliable, versatile, quiet and energy efficient. Wherever a heavy duty Condensing unit is required, the ACUV-N series should be an automatic CoilComponent FeaturesCompressorACUV-N Series air Cooled Condensing unit uses high performance and high efficiency screw compressors which are double walled and robust in construction and have very few moving parts. The lubrication circuit is designed as is typical for the screw compressor in which oil is separated by a three stage oil separator and a long life filter (10 m mesh size) is used.

8 Oil sight glass, oil fill / drain service valve, insertion type oil heater with sleeve, discharge shut - off valve and suction gas filter are availabe as standard. Additional features are as follows : Bearings are generously dimensioned to provide long life operation. Main elements are the roller bearings for the radial forces combined with robust axial bearings arranged in tandem configuration. Down to 50% capacity control and automatic start unloading are provided as standard. The compressor is protected by different devices and devices include check valve in the discharge gas outlet and differential pressure relief valve. The protection system includes motor internal thermal protection, phase sequence protection for direction of rotation, oil temperature protection and manual reset Air Cooled Condensing UnitsACUV-N Series - R-13 4 a4 Condenser FansCondenser fans are propeller type, aluminium alloy blades, directly driven by electric motors.

9 Motors are Totally Enclosed Air Over (TEAO) six pole with class F insulation and minimum IP55 protection. The TEAO and class F insulation features ensure long life and are unique for SKM. The motors are factory wired, using wires specially selected for high ambients operation, to unit control panel where the motor contactors are located to control the operation of these motors. The condenser fans are individually statically and dynamically balanced at the factory. Casing/StructureDesigned for ease of handling and low cost to install. The ACUV-N Air Cooled Condensing Units are factory assembled and mounted on a rigid base. The unit casing used in ACUV-N Condensing Units is made of zinc coated galvanized steel sheets conforming to JIS-G3302 and ASTM A653 which is phosphatized then baked after an electrostatic powder coat of approximately 60 microns.

10 T h i s fi n i s h a n d c o a t i n g p a s s a 1 0 0 0 h o u r s i n 5 % s a l t s p r a y t e s t i n g at 95 F (35 C) and 95% relative humidity as per ASTM B117. The entire assembly comes complete with lifting holes on the base frame for rigging and available include hot dipped galvanized base frame and structural members aluminium/stainless steel panels are available, on request, as ChargeCondensing Units are shipped with nitrogen holding charge only. Piping connectionsACUV-N air Cooled Condensing Units piping connections come, as standard, terminated with sealed and soldered copper pipe installation would require the cutting off (using roller-type tube cutters) of the ends prior to connections being resoldered and connected to the field supplied refrigerant Pipe workSKM ACUV-N series Condensing Units are provided with all internal piping, using ACR grade copper tubing, between compressor and supplied liquid line refrigerant controls are available as an option for field installation (Please specify CRSP).