Heat Pump, 4 Ton, 17 SEER, R-410A, 1-Ph. 35A, 1/5 HP, 4000CFM, 194W, 870 RPM

EcoNet Smart Thermostat – The EcoNet Smart Thermostat serves as the hub of communication for a home’s Heating, Cooling and Water Heating systems and is required to operate an EcoNet Enabled Heating and Cooling system in a fully communicating mode. The EcoNet Smart Thermostat displays detail diagnostic from outdoor and indoor connected units. Variable Speed Outdoor Unit Control (VSODU) – is where control wiring is hooked to the UA20. The VSODU control takes input from the EcoNet Control Center, outdoor suction temperature and pressure sensors, outdoor air temperature and communicates to the Inverter Control Motor Drive, EEV, outdoor fan and indoor blower to precisely control system capacity output of the air conditioner cooling mode. It also is equipped with Dual Seven-Segment Display for technician interface, operation status and fault code communication. Two momentary buttons allow technician to initiate various operating modes. Various LED’s communicate active EcoNet communication, microprocessor activity and EEV operation. See I&O for more details. The Inverter Control Motor Drive – converts incoming single-phase AC power to 3 phase DC simulated sine wave power. Once power is converted the Inverter Control Motor Drive varies frequency of the power to the compressor varying the compressor speed. The Inverter Control Motor Drive has active protection algorithms that keep the compressor safely inside its operating envelope. The Variable Speed compressor – utilizes a Brushless Permanent Magnet Motor (BPM) that varies the Scroll speed, thus, varying the refrigerant flow. The robust scroll design has proven reliability over competing compressor technologies. Swept Wing Fan Blade – is the latest technology in outdoor fans that increase efficiency and reduces air noise. The Electronic Expansion Valve (EEV) – (Located on the indoor coil) is an electronically driven refrigerant control valve. A small stepper motor is used to open and close the valve to precisely control refrigerant flow. It is controlled by the EcoNet Air Handler Control or stand alone EEV Control in furnace coil applications. Either control receives input from the pressure transducer and suction sensor to control the refrigerant in the cooling mode. The EEV is superior to a TXV (thermostatic expansion valve) because the EEV controls superheat at the evaporator coil under varying load and refrigerant flow conditions, more precisely than traditional TXV’s. The Filter – is an electrical device that “cleans” the AC power component. This low pass filter only permits the passage of 60-Hertz signal to the inverter drive. The Pressure Transducer – is used to measure suction pressure in the outdoor air conditioner. The VSODU takes this input to operate low pressure and make decisions on system operation such as low ambient cooling. Various temperature sensors – There is an outdoor air sensor, an outdoor coil sensor, a discharge line temperature sensor (not shown, located on discharge line), a suction line temperature sensor and a compressor sump temperature sensor (not shown, located bottom of compressor). The VSODU uses these temperature measurements to operate the system. The Choke – is provided to absorb power spikes that might occur on the DC line. Ferrite Rings – are iron cores through which AC power is looped keeping any electrical noise contained. Voltage: 208/230V,Frequency: 60Hz,Noise: 73.8dB,CFM: 4000,Watts: 194,RPM: 870