Honeywell T991B1003

Honeywell T991B1003 is obsolete. See suggested replacementHoneywell T775R2027

Modulating Temperature Reset Controller, 70F to 140F

Overview :

Automatic outdoor reset controllers for air or liquid.

Features :

Raises heating medium control point automatically as outdoor temperature falls.
One remote element senses heating medium, the other senses outdoor air temperature.
T991 has 135 ohm potentiometer for proportional heating control.

Product Specifications :

Application: Provide modulating control of water or air temperature in ducts or tanks, setpoint automatically reset as outdoor temperature changes
Dimensions (in.): 5 5/8 in. high x 2 in. wide x 2 1/4 in. deep
Dimensions (mm): 143 mm high x 51 mm wide x 57 mm deep
Frequency: 50 Hz; 60 Hz
Voltage: 24 Vac to 30 Vac
Setpoint Temperature Range (C): 21 C to 60 C
Setpoint Temperature Range (F): 70 F to 140 F
Operating Temperature Range (F): 125 F Maximum
Operating Temperature Range (C): 52 C Maximum