Honeywell Commercial T991A1186 Proportional Temperature Controller

The Honeywell T991A1186 Proportional Temperature Controller delivers precise, modulating temperature control for commercial duct and tank systems. This single-sensor controller offers a configurable setpoint from 55 to 175°F, a throttling range of 3–30°F, and a maximum ambient temperature rating of 200°F for demanding environments.

• Model: Honeywell T991A1186 Proportional Temperature Controller (1 sensor input)
• Bulb/Capillary: Copper bulb 1/2" diameter x 4-3/16" length with 5 ft capillary
• Throttling range: 3–30°F for smooth, modulating control
• Setpoint: Adjustable 55–175°F
• Max temperature: 200°F rating
• Electrical: 24–30 VAC, 50/60 Hz; analog output 135 Ω potentiometer
• Connections: 1/2" conduit
• Applications: Suitable for duct and tank installations; direct immersion capable
• Pressure rating: 50 PSI (direct immersion)
• Dimensions: 2" W × 2-1/4" D × 5-5/8" H
• Sensor inputs: 1
• Finish: Gray enclosure