Air conditioning apparatus connecting one outdoor unit with seve

Details Air conditioning apparatus connecting one outdoor unit with seve Air conditioning apparatus connecting one outdoor unit with seve

1990-12-31

1992-06-23

Makay, Albert J.

Refrigeration

With indicator or tester

Operatively correlated with automatic control

62129, 62160, 62157, 165 111, 165 28, F25B 4900

Patent

active

051232545

ABSTRACT:
An air conditioning apparatus in which one outdoor unit is connected to several indoor units through respective refrigerant tubes and signal conductors. The outdoor unit has compressors for discharging refrigerant and an outdoor heat exchanger. Each outdoor unit has an indoor heat exchanger and an indoor heat exchanger temperature sensor. When an operating device signals a check node, the compressors are stopped for a predetermined time period. Then the compressors are operated to sequentially discharge refrigerant to each indoor unit. A checking device then monitors the signal conductors of each indoor unit for a signal indicating a certain temperature condition. Based on the signals received, the checking device determines whether the indoor units are properly connected to the outdoor unit.

REFERENCES:
patent: 4211089 (1980-07-01), Mueller et al.
patent: 5005366 (1991-04-01), Murashige

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