T-8000-4 Johnson Controls Thermostat

Overview

The Johnson Controls T-8000-4 is a remote element thermostat designed for applications requiring the temperature sensing element to be located where extreme environmental conditions do not permit direct controller mounting, or where local operational adjustments would be inconvenient. This relay-type instrument features a two-sided dial and can be configured as either a direct or reverse acting device using an internal slider. It is well-suited for installation on local control panels and surface mounting with barbed fittings for air connections.

Features

• Remote element design for flexible installation in extreme or hard-to-reach conditions.
• Factory calibrated proportional instrument requiring minimal field adjustment.
• Dual-sided dial with support for wide temperature range scales.
• Direct or reverse acting functionality adjustable via an internal slider.
• Surface-mount enclosure equipped with barbed fittings for pneumatic air connections.

Specifications

• Sensing Element: 8 ft averaging element.
• Capillary Length: 4 ft.
• Operating Temperature Range: Dual-sided dial covering -10 to 124°F and 110 to 244°F.
• Factory Calibration: Approximately 8 psig (56 kPa) output pressure at 70°F (21°C).
• Sensitivity: 1 psi/°F (1 kPa/°C).
• Dimensions: 5.85 x 13.4 x 5.5 inches.
• Weight: 3.0 to 4.0 lbs.
• Maximum Ambient Operating Temperature: 150°F (66°C).
• Minimum Ambient Operating Temperature: -20°F (-29°C).

Applications

• Commercial and industrial building HVAC automation control.
• Remote temperature sensing where extreme local conditions prohibit direct thermostat placement.
• Centralized monitoring systems requiring surface-mounted controllers on local pneumatic control panels.
• Direct or reverse acting temperature regulation across a broad operating spectrum.