Johnson Controls A36AGA-9 Temperature Control

The Johnson Controls A36AGA-9 Temperature Control is a heavy-duty three-stage thermostat engineered for precise sequencing of HVACR equipment, including multiple refrigeration compressors, chillers, and staged heating units. This open-construction model is designed for panel mounting and features a stem for knob adjustment, allowing technicians to shift the entire staging band simultaneously to find the optimal balance point. The unit operates via a single liquid-filled sensing element that remains unaffected by barometric pressure, ensuring consistent performance in diverse environments. With a 10/90 degree setpoint temperature range and a 6-foot capillary length, this control provides the mechanical reliability required for industrial refrigeration and commercial air conditioning applications. Each of the three stages utilizes SPDT contact action to prevent erratic sequencing and maintain tight environmental control. Built to withstand demanding conditions, the A36AGA-9 is ambient compensated from 0 to 140°F, making it a staple for contractors managing multi-stage temperature control systems.

• Precise Multi-Stage Sequencing: Controls up to three stages of heating or cooling from a single sensing point to prevent short-cycling.
• Panel-Mount Versatility: The "no enclosure" design is optimized for integration into custom control panels and OEM equipment.
• Field-Proven Reliability: The liquid-filled capillary and sensing bulb offer stable calibration regardless of altitude or atmospheric changes.
• Simplified Calibration: A single knob adjustment manages the entire staging range, reducing the risk of field manual errors.

• What is the switch action for the A36AGA-9? This model features three Single-Pole Double-Throw (SPDT) switches that actuate in sequence as the bulb temperature changes.
• Can the differential between stages be adjusted in the field? No, the differential and sequencing are factory-set to ensure equipment operates according to the original engineering specifications.
• Is this control affected by the temperature of the air around the case? The unit is ambient compensated between 0°F and 140°F, allowing the sensing bulb to maintain accuracy even when the control body is in a different environment.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.