Models IDHC and IDHB
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Electric Duct Heaters IDHB & IDHC Series

Duct Heaters Greenheck has a complete line of configurable electric duct heaters that are perfectly suited to your HVAC application. Our CAPS configuration tool helps you save time with its industry leading selection speed and information packed submittals. With quick lead times and a proven history of on time shipping, we can ensure that your heater will be available when you need it. Experience the difference by choosing Greenheck duct heaters for your project. Applications Greenheck duct heaters are used in forced air applications to provide dedicated space heat or to supplement existing...

IDHB & IDHC Two frame types are available: • Slip in - allows you to slip the heater into the opening in the ductwork. • Flange - allows you to bolt into place between two sections of flanged duct. Wrapper Wrapper Heating Elements Heating Elements Why would I choose Greenheck heaters versus other brands? We provide: • Bi-directional airflow in horizontally mounted applications • Hinged access cover with latch • All limit controls are resettable • Proven wire rack system provides very low pressure drop and extended element life • Zero clearance rating for installations into ducts • All...

Options/Accessories Control Panel • Removable hinged access door with latch (standard) • Detailed wiring diagram • Configurable with left or right offset Available options: • Dust tight construction with gasketed cover and sealed seams • Vapor barrier • Recess for internally insulated ducts • Flush mount configuration 1 - Airflow Switch Fan Interlock switch (standard/UL required) Optional airflow switch senses air pressure across the heater surface closing the electrical switch and allowing the heater to activate. This switch is available with fixed or adjustable set point. 8 2 - Disconnect...

Options/Accessories 6 - Control Transformer Control transformers are used to provide single point wiring when the control voltage differs from the line voltage. The transformer is available as fused or unfused. Staged Control One to four stages are provided standard. Pneumatic Pneumatic controls allow a pneumatic building control system to operate heaters with up to three stages. An airflow switch is standard with this option. Model IDHC is available with the following proportional control options which are compatible with a 0-10Vdc or 4-20mA analog signal from a BMS, Room or Duct T-stat....

Options Pilot Light Pilot lights are installed on the side panel and used to indicate heater conditions as follows: - heater energized - step energized - airflow switch open • Available with 24V or 120V control voltages Time Delay Relay A time delay relay provides a delay of 30 to 60 seconds when energizing or de-energizing the circuit controlled. • Standard control voltages are 24V through 277V Pressure Electric Switches (PE) A PE switch is used to control the heater with a pneumatic air signal. • Requires field adjustment for specific job requirements Thermostat Room stat - Controls...

Performance Data Minimum Air Velocities 22,000 WATTS PER SQUARE FOOT, DUCT AREA Static Pressure Drop - inches of water (w.g.) Pressure Drop Through Heater General A. The minimum airflow through a duct heater is directly related to the inlet air temperature. Consideration must be given to both airflow across the heater and the inlet temperature. B. To calculate the watts per sq. ft. (square foot) of duct area, divide the total watts required by the duct size (Watt density = watts/duct area (ft2). Example: Duct size equal 2 ft. x 3 ft., total watts equal 20,000 watts per sq. ft. 20,000 = 3333...

Formula for Calculating Line Currents Single Phase WATTS AMPS = LINE VOLTAGE TO CONVERT “kW” TO WATTS MULTIPLY “kW” BY 1,000 Three Phase WATTS AMPS = LINE VOLTAGE x 1.73 Line Voltage Capacity Calculator (Standard Air Conditions) Enjoy Greenheck’s extraordinary service, before, during and after the sale. Greenheck offers added value to our wide selection of top performing, energy-efficient products by providing several unique Greenheck service programs. • ur Quick Delivery Program ensures shipment of our in-stock products within 24 hours of O placing your order. Our Quick Build made-to-order...