WATER COOLED PACKAGE
GENERAL DESCRIPTION
The water-cooled packaged air-conditioners are designed for indoor installation free-blow or ducted airconditioning systems in domestic, commercial and industrial applications.They are available in nominal sizes of 5 to 86 tons.The UWM 060 to 200 units are designed with decorative front panel grille for air inlet. An optional plenum is also available for these models, for free-blow standing application.The unit has single or multiple hermetic scroll compressors with independent refrigerant circuits. Each refrigerant circuit consists of a high efficiency profiled tube-in-tube type condenser, a sealed filter drier, thermal expansion valve/ capillary tube.The unit has been leak tested, evacuated, dehydrated and charged with R22 (R407C & R410a as option) at factory.
UNIT NOMENCLATURE
The model number denotes the following characteristics of the unit :
LIMITATIONS
COMPRESSORS
Scroll compressor offers versatility and superior performance in a number of ways. With its higher efficiency and quiet operation,it ensure a smooth spectrum and good sound quality. The unprecedented reliability offers better liquid and debris handling. The unloaded start function ensure the lowest system design and operating cost in the world.
HIGH EFFICIENCY CONDENSER
High efficiency profiled tube-in-tube counterflow condenser offers positive refrigerant cooling. The refrigerant and water are circulated in opposite direction, which removes the heat quicker and more efficiently. Shell and tube condenser can be offered as optional.
ROBUST CONSTRUCTION
Strong extrusion aluminium posts couple with double skin panel with injected polyurethane foam providing robust casing construction. Units are of compact design, which reduce valuable floor space requirements and allow unit to access easily through most plant-rooms.
QUIET OPERATION
The unit is divided into separate compartments, keeping compressor noise from reaching the fan, plenum or duct section. 25mm double skin with 40kg/m3 density polyurethane panel provided excellent thermal insulation and substantially reduces unit heat gain from ambient.
AESTHETIC APPEARANCE
The state-of-the-art design of external the UWM model has a smooth continuous surface with no bolts and nuts. The appearance is further enhanced with color bond panel finishing on the outer skin and galvanized steel inner skin as factory standard.
ACCESSIBILITY AND EASE OF SERVICING
Removable access door provides easy to access compressor, condenser and evaporator blower compartments during servicing or replacement. All panels are easily removable for any parts replacement.
EASY AND FLEXIBLE INSTALLATION
All units are completely factory assembled, leak tested, evacuated, dehydrated, pre-charged with R-22 (R407C & R410a as option) and tested to make installation simple. Connect up the condenser water piping and electrical supply and the unit is ready to operate.
MOTOR AND DRIVE PACKAGE
TEFC Motor and Drive Package supplied as factory standard or according to customer's specification as an option.
BLOWER
The evaporator blowers shall be of double inlet double width, centrifugal forward-curved type. Fan wheel shall be statically and dynamically balanced. Fan wheel and housing shall be galvanized steel.
COIL
The evaporator coils shall have Aluminium fin (hydrophilic as option) with mechanically bonded to 3/8" copper tubes.
HIGH IAQ AIR SUPPLY
Double skin panel construction allows easy inspection, cleaning and maintenance of the interior surface.Moisture intrusion and microbial growth are inhibited with non hydroscopics properties of polyurethane foam.
FILTERS
Nominal 1" thick washable flat filters of 75% - 80% arrestance supplied as standard for UWM 450 and below. Nominal 2" thick washable flat filters of 75% - 80% arrestance supplied as standard for UWM520 and above. Optional 4" thick high efficiency filter for UWM250 and above are available.
PLENUM
An optional plenum is available for free-blow application for the model UWM060-200. (Additional unit height of 342mm is applied for the option.)
OPTIONAL ACCESSORIES
i ) D.O.L STARTER
An optional plenum is available for free-blow application for the model UWM060-200. (Additional unit height of 342mm is applied for the option.)
ii ) ELECTRONIC CONTROLLER
Electronic controller can display and set temperature readings with auto compressor sequencing. The controller comes with 3 minutes restart timer for compressor protection. Alarm function displays various errors and faults.
iii ) SOFT STARTER
Factory wired soft starter is available as option.
iv ) SHELL AND TUBE CONDENSER
Turbo-C tubes are used in the Shell-and-tube condenser, with Turbo-C tubes excellent heat transfer coefficient, it is suitable to be used for condensing on outer surface, as its outer integral helical fins with special sharp saw teeth for the condensation mechanism enhance the excellent heat transfer performance. It is different from the conventional integral finned tube with a simply increased surface area. When the refrigerant flows along the tube axis, performance can be improved and pressure lose can be greatly reduced.
MANUFACTURER UNDER LICENSE
TRANS ELECTRICAL ENGINEERING SDN BHD (RC00010069)
No 24, 1st Floor , Block 3, Bangunan Ben Kassim & Hjh Zaliha, Spg 440,
Jalan Muara, Sungai Tilong, Berakas B,
Brunei-Muara, BC 2115, Brunei Darussalam.
Tel : +673 233 0630
Email : trans.electrical@yahoo.com