Sizing an Air Conditioner

Sizing an Air Conditioner

The proper selection of an air conditioner is determined by the following steps:

  1. Internal heat load quoted as Watts that must be dissipated.
  2. The exposed surface area of the enclosure.
  3. Temperature differential required between maximum inside temperature and maximum outside ambient.
  4. Final calculation of the above.

The DTS/DTT offering is available in the most popular selection of cooling capacities, sizes, voltages and mounting configurations. Available capacities range form 1,200 to 12,00 BTU/H in both side mounting an dtop mounting models. All models use powerful radial fans for maximum air circulation inside the enclosure in ambient temperature of 125°F (+52°C). Models from 2,000 BTU/H capacity are equipped with thermal expansion valves for optimal use of the evaporator heat exchange surface under all operating conditions. For additional protection of the compressor motor, these valves are supplied as standard with Maximum Operating Pressure control devices (MOP). For energy conservation, the use of hot gas bypass valves is limited to the unload starting and control of large compressors from 8,000 BTU/H upwards.

All air conditioners were developed, designed and subject to final inspections in accordance with international Standards.

General Specifications for All Air Conditioners

Construction: Outer shell of sheet steel.
Closed Loop Cooling: Ambient outside air is never mixed with clean dry enclosure air.
Operating Temperature: Minimum +46 F (+8 C) Maximum +125 F (52 C).  Optional low ambient kit is available
Gasketing: Is provided and/or installed on all units to maintain NEMA ratings specified.
Templates: Provided on all units for easy layout of cutouts and mounting.
Power: Available in 115 V 60 Hz, 110 V 50 Hz and 230 V, 460 50/60Hz 3 phase.
Filter: Removable filter mat made from synthetic fibers are reusable and can be rinsed clean.
Refrigerants: All models use environmentally friendly R134a.
Fans: All blower motors are thermal protected and sealed with permanent lubricants.
Condensate Disposal: Built in condensate evaporators are standard on most models. All units feature a condensate drain fitting complete with hose attachment.
Insulation: Cold components, lines and evaporator compartment insulated for maximum efficiency and protection against condensation.
Quality Assurance: Prior to charging, the refrigeration system is hermetically sealed with all joints brazed under protection gas atmosphere to exclude any internal scale. After a thorough leak test every unit undergoes safety and function checks, then is serialized and packed into sturdy boxes prior to shipment.
Installation Manuals: Included with all models are detail drawings, mounting, schematic and wiring diagrams, a trouble shooting checklist and warranty information.