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A field installed crankcase heater is standard on S1H 09 &12 (Thermostatically controlled) models, and is available as optional equip ment on other models. inStaller SUpplieD itemS • Power wiring • Low volt wiring (18 awg minimum) • Secure mounting pad or foundation • Refrigerant piping (if not purchased from EMI) • High Volt Disconnect • Refrigerant for charging interconnect piping (see charge table on page 10) • Compressor and fan motor contactor • Run capacitor • Loss of charge switch (09 - 1