STRAPON CHANGEOVER STATW/ENCLO

TC-2974 STRAPON CHANGEOVER STATW/ENCLO TC-2974 Setpoint adjustment range: 50 to 210°F (10 to 99°C) Differential: 10°F (5.5°C) Ambient Temperature Limits: Case: Storage: -40 to 160°F (-40 to 71°C) Operating: 40 to 140°F (-40 to 60°C) Bulb: 260°F (127°C) maximum Locations: NEMA Type 1 Electrical Switch: Heavy duty snap-acting SPDT Connections: Coded screw terminals Case: Steel with 1/2 in. to 3/4 in. conduit opening on bottom Mounting: On up to 4 in. (102 mm) O.D. pipe with metal strap and spring provided The thermostat is shipped with a metal strap and spring, which will fit supply lines up to 4-inch (102 mm) O.D. This thermostat is used to either open or close electrical circuits when the temperature of a pipe exceeds the thermostat setting. The common-normally closed circuit is often used on unit heater installations to prevent operation of the fan unless heat is actually available. The common-normally open circuit is usually used for control on hot water boilers.