Product Overview:
Temperature regulation in HVAC systems relies on thermostatic controls that respond to changes in sensed conditions. The Crandall Stats & Sensors TK-6124-CSS Relay Bulb Thermostat is an OEM temperature control featuring a relay bulb sensing arrangement and a 6-foot capillary. Its reverse-acting (RA) operation and adjustable temperature range of -20°F to 240°F define its specified control characteristics.
Bulb Sensing:
A temperature-sensitive bulb detects conditions at the sensing location and transfers the response through the connected 6-foot capillary to the thermostat mechanism. This arrangement allows the sensing point to be positioned away from the main thermostat body while maintaining a connection between the bulb and the control mechanism. The capillary length is an important consideration when matching the thermostat to the existing installation.
Reverse-Acting Relay Control:
Uses a reverse-acting response to determine how the relay control reacts as the sensed temperature changes. This switching characteristic differs from direct-acting operation and must correspond to the control response required by the connected equipment. The relay mechanism provides the switching action associated with the thermostat's temperature-control operation.
Replacement Guidelines:
Replace the Crandall Stats & Sensors TK-6124-CSS Relay Bulb Thermostat if temperature sensing becomes inconsistent, the relay mechanism stops responding, or the capillary develops visible damage. Replacement may also be necessary if temperature adjustments no longer produce the expected control response. Match the reverse-acting operation, 6-foot capillary length, and -20°F to 240°F temperature range when selecting a replacement.
Common Signs of Failure:
Temperature sensing becomes inconsistent.
Relay mechanism fails to respond.
Capillary tubing develops visible damage.
Temperature adjustment becomes ineffective.
Thermostat operation becomes intermittent.
Equipment Compatibility:
The Crandall Stats & Sensors TK-6124-CSS Relay Bulb Thermostat is an OEM control intended for applications requiring reverse-acting relay operation and a bulb-and-capillary sensing arrangement. Its 6-foot capillary length and -20°F to 240°F temperature range must match the requirements of the existing equipment. Before purchasing, compare the original part number, sensing arrangement, switching action, and temperature range with the equipment documentation.
Technical Specifications:
Brand: Crandall Stats & Sensors
Part Number: TK-6124-CSS
Product Type: Relay Bulb Thermostat
Capillary Length: 6 Feet
Temperature Range: -20°F to 240°F
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