Safety alarms and controls: Built in safety features in the compressor and in the refrigeration circuits ensure high level of protection to the unit. Scroll compressors have much better liquid refrigerant handling capability than the other types of compressors due to the nature of scroll design. Scroll compressor durability and reliability as well as its quiet operation are inherent with the design of the scroll compressor. A tandem scroll compressor consist of two individual compressors, mounted on a common base, manifolded in to a single refrigerant circuit.
A tandem compressor set has the common suction, discharge, oil and also additional crank gas equalizer lines between the two compressors. For example, two scroll compressors are linked in tandem to form one tandem scroll compressor. Tandem Compressor In a tandem scroll air conditioner, the ton tandem scroll drives just one circuit, which therefore consists of just one condenser and evaporator, both of which are however designed for the full capacity of 11 tons.
Full Load Operation Under full load conditions, the tandem scroll machine and the conventional scroll machine behave almost identically. Part Load Operation The entire picture changes dramatically under part-load conditions. Part-load conditions are those that prevail when an air-conditioned space is not fully occupied or used with less occupancy, as for example a half-full theatre or an empty showroom.
In such cases, the entire capacity of the installed air conditioning system is not required to cool the premises. In both conventional and tandem scroll machines, one of the two compressors switches off under part-load conditions. However, in the tandem scroll system, the compressor that remains on utilizes the entire fully rated condenser for cooling purposes.
Tandem Scroll compressors should therefore deliver a higher EER under part-load conditions. Digital control and setting of temperature values in 1o C.
Automatic selection of compressors with run time Equalization. Non Volatile Memory backup for all set value parameters. Automatic starting of unit in case of power failure. Built-in time delays for Compressor and fan.
B Specifications 1. Operating temperature limit 0 - 65o C 3. Set temperature range 19 - 32o C 6. Temperature sensors NTC thermister bit sensor with 5 meter long cable 7. In case of any fault, green flashes continuously. At any time of operation, if no key is pressed for next successive 10 seconds, the display will show Actual Return Air Temperature. Press desired key to set new values.
As soon as you reach the desired Temperature stop adjusting the keys. The digits will start blinking for 5 seconds. After the fault is cleared, unit restarts automatically. Temp sensor is tH IF Temp sensor is open or bad then open or bad. This fault is Auto reset. The Blower Fan will come on immediately if fan overload relay is not tripped. The compressor will come on with pre-set delay of 2 minutes. Digital control and setting of Temperature values in 1 Deg.
Non Volatile Memory backup for all set value parameter. Built-in time delays for Compressor and Fan. Temperature sensors NTC thermister Bit sensor with 5 meter long cable 7. To view Set Temp. At any time of the operation, if no key is pressed for next successive 10 seconds, the display will show Actual Return Air Temperature. The Blower Fan will come on immediately. The compressor will come on with pre-set delay of 1 minutes.
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