Diversitech phl516 Plenum Thermostat Ducted

Product Description

The DIVERSITECH phl516 is a plenum-rated thermostat designed for temperature sensing and control in ducted HVAC systems. Plenum thermostats are mounted inside or adjacent to the air distribution plenum, where they monitor supply or return air temperatures to govern system operation. The phl516 is a mechanical control device suited for residential and light commercial forced-air applications. HVAC technicians install this thermostat as part of a broader control strategy, using it to protect equipment, regulate zone temperatures, or serve as a high-limit or operating control within the air handler or ductwork assembly.

The phl516 is intended for ducted forced-air HVAC systems, including gas furnaces, air handlers, and split systems that route conditioned air through a duct network. It is appropriate for residential and light commercial installations where a plenum-mounted sensing device is required. This thermostat is not rated for ductless or mini-split configurations. Licensed HVAC technicians are the primary installers for this type of control in new construction and retrofit service work.

Key Features

• Plenum-rated construction suitable for installation inside ducted air distribution assemblies
• Designed for ducted HVAC applications including forced-air furnaces and air handlers
• Functions as a sensing and control device within the air distribution system
• Compact form factor for straightforward integration into existing control wiring

Compatibility

Designed as an OEM-style replacement or new-installation plenum thermostat for ducted residential and light commercial forced-air HVAC systems.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with local mechanical codes and the equipment manufacturer's guidelines. Disconnect and lock out power to the air handler or furnace before accessing the plenum or control wiring. Ensure the sensing element is positioned in the airstream as specified by the system design to achieve accurate temperature readings. Do not mount the thermostat where it will be exposed to direct radiant heat sources or bypass air that does not represent true plenum conditions.