Product Description
The Honeywell T991B1003 is a Modulating Temperature Reset Controller that automatically adjusts the heating medium control point based on outdoor temperature changes. It is designed to provide precise temperature control for air or liquid.
- Automatically raises the heating medium control point as outdoor temperature falls
- Equipped with a 135-ohm potentiometer for proportional heating control
- Built with a durable copper bulb sensor element
Product Highlights
This controller ensures consistent temperature regulation with its 1:1 reset ratio and dual sensor inputs for both indoor and outdoor environments. It is reliable for various industrial applications.
Product Information
Standard Information
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Brand: Honeywell
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MPN: T991B1003
Technical Specifications
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Description: Modulating Temperature Reset Controller, 70 F to 140 F
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Application: Provide modulating control of water or air temperature in ducts or tanks, setpoint automatically reset as outdoor temperature changes
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Type: Modulating Remote
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Output Type: Analog
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Analog Output: One 135 Ohm Potentiometer
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Reset Ratio: 1.0 to 1.0
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Voltage: 24 Vac to 30 Vac
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Frequency: 50 Hz, 60 Hz
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Dimensions: 5-5/8 inches high x 2 inches wide x 2-1/4 inches deep
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Sensor Element: Copper bulb
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Number of Sensor Inputs: 2
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Capillary Length: Indoor: 10 ft, Outdoor: 30 ft
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Bulb Size: 1/2 inch diameter x 4 inches long
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Setpoint Temperature Range: 70 F to 140 F
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Maximum Operating Temperature: 125 F
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Throttling Range: 3 F to 10 F
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Comments: Indoor bulb temperature plus outdoor bulb temperature must not exceed 265 F (129 C)
