557_A 08/12 tekmarNet® Thermostat 557 Zoning Replaces: New Application Brochure / tekmarNet Thermostat 557 Radiant Floor, 2 Heat Pump/Cool, Backup, Humidity www.tekmarControls.
557_A-1 Heat Pump, Backup and Humidifier Description The 557 operates a two-stage air-to-air heat pump for heating and cooling. When the outdoor temperature falls below the balance point, the heat pump is disabled and the backup heat source provides heating. A humidifier is operated to maintain a minimum relative humidity level.
557_A-2 Radiant Floor, Heat Pump, Backup and Humidifier Description The 557 operates a radiant floor as the first stage of heat, and operates a two-stage air-to-air heat pump for second and third stage heating and first and second stage cooling. When the outdoor temperature falls below the balance point, the heat pump is disabled and the backup heat source provides heating. A humidifier is operated to maintain a minimum relative humidity level.
557_A-3 Furnace, Air Conditioner and Humidifier Description The 557 operates a furnace for heating and an air conditioner for cooling. A humidifier is operated to maintain a minimum relative humidity level. Outdoor Sensor Humidifier Hum 557 W2 Air Conditioner Furnace Setup Menu Essential Setting Sensor 2 OUT W1 Terminal NONE FURN Y1 Relay AC1 Y2 Relay AC2 ACC HUM Humidify mode HM2 or 3 W2 (furnace) Y2 (2nd stage A.C.) Furnace Y1 (1st stage A.C.
Radiant Floor, Backup, Air Conditioner and Humidifier 557_A-4 Description The 557 operates a radiant floor as the first stage of heat, and operates a hydronic fan coil for second stage heating. The 557 operates an air conditioner for up to two stages of cooling. A humidifier is operated to maintain a minimum relative humidity level.
557_A-5 Building Loop Heat Pump and Backup Description The 557 operates a water-to-air heat pump to provide heating and cooling as required. The zone valve is activated to allow the building water-loop to circulate through the heat pump when in operation. Backup electric resistance is available for emergency backup heat operation.
557_A-6 Radiant Floor, Building Loop Heat Pump and Backup Description The 557 operates a water-to-air heat pump to provide heating and cooling as required. The zone valve is activated to allow the building water-loop to circulate through the heat pump when in operation. Radiant floor heating is controlled through the thermostat to provide a more comfortable space. Electric resistance is available for emergency backup heat operation.
557_A-7 Radiant Floor, Fan Coil, Humidifier and Dehumidifier Description The 557 is connected to a House Control 406 which provides hot or chilled water from a storage tank. The 557 operates a radiant floor as the first stage of heat, and operates a hydronic fan coil for second stage heating and first stage cooling. A humidifier and dehumidifier are operated to maintain minimum and maximum relative humidity levels.
