T-4506-201 Johnson Controls Thermostat

Overview

The Johnson Controls T-4506-201 is a high-volume output, dual-temperature pneumatic room thermostat designed to provide individual day and night or two set-point temperature control. This direct-acting model is engineered for horizontal mounting and features an integrated manual indexing switch that allows users to temporarily restore day temperature settings during a night cycle without affecting other system thermostats.

Features

• Dual-dial design for independent day and night temperature settings.
• Direct-acting functionality optimized for horizontal mounting.
• Manual indexing switch for manual or automatic reset of day control.
• High-volume output utilizing reliable bimetal sensing elements.
• Integrated Fahrenheit dial with adjustable sensitivity options.

Specifications

• Dial Range: 55 to 85 degrees F
• Supply Pressure: 13 to 25 psig (15 psig nominal day, 20 psig nominal night)
• Switchover Pressure: 17 psig (factory calibrated at 17.5 psig)
• Air Consumption: 20 SCIM
• Output Flow Capacity: 400 SCIM
• Sensitivity: Adjustable from 0.75 to 4.0 psig/degrees F
• Air Connections: Two barbed 5/32 inch connections for supply and output

Applications

• Used for precise space temperature monitoring and control in commercial HVAC systems.
• Ideal for day-night or weekend setback configurations to optimize energy efficiency.