RDFF – Commercial Flanged Duct Heater
RDFF – Commercial Flanged Duct Heater-The Ruffneck™ RDFF Commercial Flanged Duct Heater with finned tubular (Calrod® type*) elements is designed for use in comfort heating applications, such as make-up air heating, air pre-heating, air handling equipment, fan coils, terminal reheating, multi-zone reheating, heat pump auxiliary systems and return air heating. The finned tubular elements are constructed using a steel tube with a corrugated steel fin wrapped around it and brazed together, which increases the heat transfer surface of the element resulting in a lower operating temperature than the non-finned tubular element designs.
APPLICATION:
Ruffneck™ air duct heaters are for use in comfort heating applications.
Typical applications include:
• Make-up air heating
• Air pre-heating
• Air handling equipment
• Fan coils
• Terminal reheating
• Multi-zone reheating
• Heat pump auxiliary
systems
STANDARD FEATURES:
Primary linear cutout: 160°F (71°C), 277/600 Vac, 25/10 amp
non‑inductive
• Secondary linear cutout: Manual reset complete with back-up
magnetic contactor on units under 300 V, 30 kW and less, 225°F
(107°C) 277/600 Vac, 25/10 amp non‑inductive
FEATURES:
- Certified for use in ordinary (nonclassified) locations
- Designed for use in commercial comfort heating applications
- Finned tubular element increases heat transfer surface area resulting in lower operating temperature
- Primary and secondary cutouts for overheat protection are standard on all models
