A19BAF-1C Johnson Controls Temperature Control

Overview

The Johnson Controls A19BAF-1C is a single-stage mechanical line voltage thermostat designed for return air or space temperature sensing. It features a responsive coiled air sensing element that accurately monitors ambient temperatures in commercial, industrial, and agricultural settings. Enclosed in a rugged galvanized steel housing, this reliable controller regulates heating or ventilation equipment based on environmental changes without requiring external power.

Features

• Heavy-duty, NEMA 1-rated galvanized steel enclosure protects internal components from accidental impacts and dust contaminants.
• Highly responsive 1-3/8 inch x 2-1/4 inch hydraulic air coil sensing element delivers dependable temperature tracking.
• Unaffected by cross-ambient conditions or shifts in barometric pressure, ensuring reliable long-term accuracy.
• Features an exposed front control setpoint dial with a highly visible knob for quick, convenient adjustments.
• Incorporates a snap-acting switch mechanism enclosed in a dust-protected housing to extend operational life.

Specifications

• Temperature Range: 30°F to 110°F (-1°C to 43°C)
• Switch Type: SPDT (Single-Pole, Double-Throw)
• Switch Action: Open or close on temperature rise
• Temperature Differential: 1.5°F (0.9°C) fixed
• Maximum Bulb Temperature: 140°F (60°C)
• Electrical Ratings: 120 VAC (6.0 FLA, 36.0 LRA), 240 VAC (3.0 FLA, 18.0 LRA); Resistive load up to 10 A (120 to 277 VAC); Pilot duty rated for 125 VA
• Enclosure Rating: Standard NEMA 1
• Mounting Position: Vertical installation on flat surfaces

Applications

• Ideal for return air or general space temperature sensing in building automation and HVAC systems.
• Designed to control ambient air conditions in commercial buildings, factories, offices, restaurants, and hospitals.
• Used to regulate ventilation equipment, central heating systems, space heaters, and industrial cooling setups.
• Suitable for agricultural facilities, greenhouses, and warehouses requiring precise environmental control.