Split air conditioner circuit-indoor

The circuit of the indoor unit is shown in Figure l-57e. It has two centrifugal fans with an output of 35W, arranged vertically above and below. The indoor heat exchanger
is installed on the rear side and is a finned tube heat exchanger with horizontally arranged pipes. Inside the air outlet grille on the upper part of the fan, an electric heater element is installed
with a power of 1.8-2.lkW. The power transformer, relay, thermal switch, etc. are all fixed under the centrifugal fan. The air sucked by the centrifugal fan
first flows through the filter to remove dust, and then passes through the fan cover to the heat exchanger for heat exchange. The cold (hot) air after heat exchange
flows through the auxiliary heater and is led out from the air outlet. The PSH-3VG6 indoor unit uses 5011z, 220~240V single-phase AC power, the input
power is 0.10-0.12kW, and the operating current is o. 4～0.53A, when using auxiliary heater, the input power is 1.86～2.22kW, the operating
current is 8.49-9.28mA. The outdoor unit model of
    Mitsubishi brand split air conditioner is PUH-3VG6 or PUH 3YG. The overall dimensions (height × width × length) are 850mm
× 800mm × 320mm, and the appearance is shown in Figure 1-s7b. It mainly consists of two axial flow fans, a curved finned tube heat exchanger,
a fully enclosed compressor, a four-way reversing valve, a flow limiting valve (capillary tube), and two balls. It is composed of a gate and a control circuit. The finned tube heat exchangers
are arranged vertically in a "7" shape and fixed on the panel near the left and the back panel: