nVent Hoffman 89096883SP Attractive industrial design with minimal use of visible fastenersEnergy-efficient rotary compressor on most modelsCleanable, reusable aluminum mesh filter included to protect coils for maximum cooling performance in dirty environmentsR407c and R134a refrigerants115, 230 and 400/460 VAC 3-phase power input on most modelsReliable mechanical thermostat on enclosure side of the unitAll G-series come standard with two separate thermostats for cooling and heating when a heater is equippedDust-resistant condenser coil allows the unit to be run filterless in most indoor applicationsDual condenser-side air movers for performance redundancy on G52 and G57 modelsGalvanized or stainless steel cover for rugged factory and outdoor environmentsExterior and partially recessed mounting optionsEasy-mount flanges for simple installationEvery unit functionally tested before shippingStandard Indoor Air Conditioner models also include: Active condensate management with heater strip, power-off relay for door switch and other system requirements, malfunction switch, and a digital display on ambient sideStandard Outdoor Air Conditioner models also include: Telcordia GR-487 capable*, Corrosion-resistant coatings on condenser coil for Type 4 units and on condenser coil and ambient-side copper joints for 4X units, malfunction switch, compressor heater, head pressure control, standard G28/G52 units have 2000W, and operating temperature range from -40 F/-40 C to 131 F/55 CRemote Access Control Units support up to 2 temperature sensors and 10 alarms. They support multiple communication protocols: SNMP, Modbus TCP, Ethernet/IP, and Profinet.Mounting hardware, gaskets and user manual furnished with the unit