TI UNIT compact roof top chiller units are manufactured in type of air cooled in capacities of 5 to 360T.R. in one to four circuited configurations. In all TI UNIT compact roof-top chiller units the frames and body are from galvanized steel & stainless steel (316l) (option) the chassis made steel channel in appropriate thicknesses and all of units are completely painted in the proper thickness. Evaporators are high efficiency shell and tube heat exchangers, designed based on TEMA. Condenser of compact rooftop chiller unit made of plated coil, designed based on TEMA. Chillers with plate type heat exchangers are available upon request. TI UNIT compact roof top chillers can be designed to operate with R-22, R-407C and R-134a refrigerants. Safety controls installed on all units include high, oil and low pressure cut-outs, compressor safety cut-out, water anti freeze thermostat, water flow switch and evaporator entering water thermostat and compressor operation time logger. The above mentioned are all chosen from the most recognized controls manufactures in the air conditioning industry. Automatic condensing temperature control: A controller, factory installed on each unit automatically stages the condenser fans allowing the unit to start. With this controller the condenser fans start stage by stage. Raw materials such as copper tubes, fittings and valves are supplied by well-respected manufacturers. Electrical safety measures such as three phase controller and circuit breakers are, available on all units. A fault detection system for the whole unit is available upon request. Microprocessor based PLC controller is also available as needed. Suitable accessories make the chillers operable in all seasons according to the application requirements without any problems.