T22JAA-1C Johnson Controls Thermostat

Overview

The Johnson Controls T22JAA-1C is a line voltage wall thermostat designed for the reliable control of commercial, industrial, or residential cooling equipment. It features a liquid-charged temperature sensing element combined with a highly efficient diaphragm and leverage mechanism to deliver accurate temperature control without the need for heat or cold anticipators. It comes equipped with an integrated system selector switch for Off-Auto operation.

Features

• Liquid-charged sensing element provides precise temperature control and a close differential.
• Eliminates the need for external heat or cool anticipators, enhancing versatility across varying current loads.
• Built-in Off-Auto system selector switch avoids the requirement for add-on subbases.
• Snap-acting contacts are housed in a sealed, dust-protected enclosure for long-term reliability.
• Equipped with a standard bimetal thermometer that is easily calibrated.
• Sturdy steel cover with a tawny silver finish and dark/light brown faceplate with aluminum lettering.

Specifications

• Temperature Control Range: 40 to 90°F (5 to 30°C)
• Switch Action: Single-Pole, Single-Throw (SPST), standard duty (nominal 1/4 hp)
• Voltage Rating: Line voltage (24 to 277 VAC)
• Differential: Approximately 2-1/4°F (1.3°C) on cooling
• Adjustment Type: External knob adjustment
• Selector Switch: Off-Auto
• Shipping Weight: 1.3 lbs (0.59 kg)

Applications

• Used for line voltage control of cooling and air conditioning equipment.
• Ideal for HVAC applications including fan coils, unit heaters, blast coils, and ventilation systems.
• Suitable for refrigeration storage rooms, commercial greenhouses, duct furnaces, and industrial environmental control.