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EQUIPMENT: AIR HEATERS

DUCT AIR HEATERS

OVERVIEW

Customer Convenience
Stelter & Brinck, Ltd. AHD and AHDR duct heaters are completely packaged with air heat burners and controls. These heaters offer the utmost in customer convenience with prewired and prepiped assembly.

Stelter & Brinck AHD and AHDR duct heaters are designed to be easy to use and install, among the features offered are:

• Remote control panel with flame safety relay, 8 point first out annunciator, relays and breakers, alarm horn, local start/stop push buttons, illuminated "E" stop button, indicator lights, FM approved high temperature limit, and PID digital temperature controller (single or multi-loop).
• Remote control interface capability for use with PLC or DCS systems available.
• FM/NFPA or IRI construction standard.

Superior Performance
Stelter & Brinck duct heaters are designed to provide unmatched performance in direct fired air heating. Our duct heaters are a product of more than 40 years of industrial combustion experience and feature:

• Standard energy turndown of 30:1.
• Fully proportional temperature control valve for 4-20 ma input.
• Fires on natural, propane, or butane gasses. Other fuel options available upon request.
• Easy maintenance, easy access to all parts.

AHD

Fresh Air Duct Section Air Heater
AHD/AHDR air heaters are designed to be inserted right into your process ductwork. The burner in our AHD units uses the oxygen present in the process stream for combustion eliminating the need for an additional combustion air source.

AHD heaters are suitable for use on clean air streams with greater than 18% oxygen content.

Standard units are limited to 800°F outlet temperature.
Custom units are available for higher outlet temperatures.

Contact the factory for assistance in selecting your next system.

• 1200°F insulation with 10 ga. steel cover
• Flame peep sight
• Stainless steel sensing tubing
• Packaged fuel control and safety valve train
• Single point fuel connection
• Prewired to numbered terminal strip

AHDR

Recirculating Duct Section Air Heater

AHD/AHDR air heaters are designed to be inserted right into your process ductwork. The burner in our AHD units uses the oxygen present in the process stream for combustion eliminating the need for an additional combustion air source.

AHDR units are designed for process streams with low oxygen content and feature a combustion blower.

Recirculating air heaters are for use on air streams that are dirty, hot, recirculated, or with oxygen content less thatn 18%. Max inlet air temperature is 750°F. For higher inlet temperatures, contact the factory.

Standard units are limited to 900°F outlet temperature.
Custom units are available for higher outlet temperatures.

Contact the factory for assistance in selecting your next system.

• Combustion air inlet
• Fully insulated, heavy steel construction
• High turndown burner (40:1)
• Prepiped and prewired fuel valve train