Certifications and compliances

NEC

• Class I, Divisions 1 & 2, Groups B*, C, D

IEC

• Class I, Zones 1 & 2, Group IIB + H₂*

UL standard

• UL823

CSA standard

• C22.2 Nos. 25, 30, 46

Environmental ratings

• NEMA 7B*CD
• Temperature code: T2A – 280°C (536°F)
  

*Hydrogen applications only apply to heaters without built-in thermostats.

Design features

• Sloped-top cabinet prevents objects that restrict airflow from being set on top
  
• Corrosion-resistant design with no exposed copper or brass – suitable for H2S environments
• High velocity airflow heats up area faster with better heat distribution
• 14 gauge steel cabinet for rugged reliability
• Short cabinet lengths take up less wall and floor space
• Optional built-in thermostat (Class I, Division 1, Groups C, D, and Zone 1, Group IIB models) reduces field installation costs
• Incoloy 840 heating elements have longer life expectancy
• Radial embossed aluminum plate fins warp less for better heat transfer
• Galvanized steel mounting brackets for quick installation

Standard materials

• Heating elements – resistance wire embedded in a magnesium oxide refractory and sheathed in an Incoloy 840 tube
• Finned tube assembly – aluminum tube with radial embossed aluminum plate fins
• Cabinet – 14 gauge (0.075"/1.90mm) steel, green/gray epoxy powder coated front and side panels; galvanized steel back panel