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Honeywell H705 Solid State Enthalpy Controller

Solid State Enthalpy Controller

The H705 Solid State Enthalpy Controller maximizes the use of free outdoor air in place of the first stage of cooling in heating, ventilating and air conditioning (HVAC) economizer systems.

• Consists of a W7459A type solid state economizer logic module and a C7400 Solid State Enthalpy Sensor on a mounting plate.
• Mounts in any position in outdoor air duct.
• Use enthalpy setpoint to select desired combination of air temperature and humidity.
• Use a second C7400A Sensor for differential changeover control to maximize savings.
• Reliable solid state humidity sensing element.
• Thermistor temperature sensing element.
• Maximizes use of outdoor air for free cooling.
• Use in electronic and electromechanical systems.

Dimensions, Approximate: 1/4 in. high x 3 1/16 in. wide x 1 3/16 in. deep (133.3 mm high x 79 mm wide x 30.2 mm deep)
Contact Ratings: Terminals 1 and 2: 50VA at 24Vac. Terminals 2 and 3:
100mA minimum to 250mA maximum at 24Vac.
Voltage: 24 Vac
Frequency: 50 Hz; 60 Hz
Operating Temperature Range: 53 F to 78F (12 C to 26 C)
Operating Humidity Range (% RH): 10 to 80% RH
Underwriters Laboratories Inc. UL Listed File: E4436, Guide: XAPX2

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