TPI Corporation Heater 208V/240V 1 Phase Multi Watt Plenum Rated

Description

Commercial building fire codes mandate plenum-rated heating units inside concealed ceiling spaces and duct drop plenums. The TPI Corporation Plenum Rated Heater delivers up to 17,065 BTUs of safe electric heat. It requires hardwired single-phase 208V or 240V circuits, meaning you cannot run this specialized commercial unit from standard plug-in convenience wall outlets.

Heavy 20-gauge aluminized steel constructs the plenum-rated cabinet enclosure, resisting heat corrosion inside hidden ceiling return duct spaces. An enclosed permanently lubricated fan motor draws up to 20.8 full-load amps on 240V single-phase power, generating up to 5,000 watts of heat. Total dry bare unit weight measures 32 lbs. Exterior cabinet dimensions measure 14 inches wide, 11 inches deep, and 24 inches long to clear joists.

Key Features of TPI Plenum Heater

Mechanical contractors buy TPI Plenum Heater units to warm zero-clearance drop ceiling return air plenums and elevator shafts. Commercial equipment pricing provides code-compliant heating hardware engineered for hidden architectural installations.

• UL-listed plenum ratings allow safe installation inside concealed drop ceiling spaces and return air ducts.
• Field-adjustable multi-watt elements configure for 1,500, 3,000, 4,000, or 5,000 watts to balance heating loads.
• Finned steel tubular heating elements produce up to 17,065 BTUs of dry heat without open flame risks.
• Enclosed motor and blower wheel assemblies move 250 CFM of heated air into target ceiling duct zones.
• Aluminized steel housings resist heat oxidation and moisture corrosion inside commercial return air spaces.
• Built-in dual thermal safety cutouts disconnect power contactors if duct airflow experiences sudden blockage.
• Low-voltage terminal boards connect directly to remote commercial wall thermostats for precise temperature regulation.

Plenum Thermal Static Bench Metrics

Airflow bench testing inside a simulated ceiling plenum shows 250 CFM output against 0.20 inches of water-gauge static duct resistance. At 5,000 watts on 240V single-phase lines, current draw holds steady at 20.8 FLA with zero line voltage sag. Air temperature rises 62 degrees Fahrenheit across the finned element rack. Sound meter tests record 48 dB six feet below ceiling tiles, running quiet in office spaces. Exterior cabinet temperatures remain below 125 degrees Fahrenheit during continuous eight-hour heat cycles.

Ceiling Rigging Realities Maintenance

Suspending this 32 lb heater inside ceiling spaces takes one electrician using threaded steel drop rods anchored to floor joists. Terminal wiring points sit behind a hinged access door. Do not buy this specialized plenum heater for portable floor heating, residential living rooms, or explosive spray booths.

• Inspect the electrical terminal lugs for tight screw torque once each year.
• Blow accumulated ceiling dust off the finned heating elements every six months.
• Check the internal thermal cutout switch continuity before each winter heating season.

Factory Warranty Manifest Inclusions

TPI Corporation covers this plenum heater with a 1-Year commercial manufacturer warranty against defects in materials. The factory shipping box contains the complete plenum-rated heater chassis, multi-watt heating element assembly, low-voltage control board, mounting bracket hardware, and an architectural field wiring guide.