Temprite Direct Fired Systems
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CMA: Direct Fired Make-Up Air/Heat
TMC: Direct Fired Curb Mounted
TMM: Direct Fired Indoor Mounted

Learn More About:
Air Turnover Systems
Indirect Fired Systems

Key Benefits
. The Direct Fired gas heating system heats efficiently and cost-effectively using no heat exchanger.
. The Direct Fired gas heating system replaces indoor air that can become chemical laden in an industrial process or commercial cooling application.
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Fresh air is available simply by turning off the heating section.

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With fans tested to AMCA standards for airflow from 1,600 to 100,000 CFM, you can put warm air right where you need it.

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Add cost-effective evaporative cooling to your Direct Fired gas heating system for year-round comfort.

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The optional filter bank removes airborne particles, and cleaned air is heated to create a more refreshing and comfortable indoor environment.

Direct Fired systems
are flexible units for space heating, make-up air, and ventilation applications.

When more air is exhausted from a building than is supplied by the mechanical systems, the building is under a "negative" condition and air will leak into the building through cracks, windows and doors. A negative condition results in the following:

. Flues and stacks will experience a backdraft and cause dangerous contaminants to remain in the occupied space. In the case of flues, the products of combustion may condense and corrode the equipment.
 . The exhaust system sees a greater static pressure which reduces the capacity of each fan, resulting in an inadequate removal of contaminants and wasted horsepower.
 . Drafts and cross currents will increase, causing an uncomfortable or unhealthy work environment.

Direct Firing eliminates the need for heat exchangers, resulting in 100% efficiency. All products of combustion are introduced into the supply air stream at concentrations well below code requirements. As natural gas is an abundant, clean and low cost fuel that is readily available, this system is very cost effective to operate.


How Direct Fired Gas Heating Works

Direct Fired gas heating is one of the simplest and most cost-effective methods for heating air. Outside air enters the unit (at point A) and is either filtered or not. If desired, a quantity of returning room air can be added (B) to this outside air in a balanced fashion to assure a constant total airflow. This air then passes over a line burner: The airflow pattern is closely controlled using profile plates, resulting in 100% efficient combustion.

The air is directly heated by this clean, controlled gas flame and distributed into the building using heavy duty centrifugal blowers (C). By carefully controlling the airflow pattern and volume, the system can provide complete, 100% combustion. Complete combustion produces only water vapor and carbon dioxide (CO2). Harmful combustion by-products are the result of incomplete combustion and a good reason why you should buy from an established expert in gas heating technology.

Gas Burner Section
Factory set and tested to ETL standards for 100% efficiency.
Gas Manifold
Completely factory assembled and tested.
Optional Intake Hood
For outdoor models Temprite offers a complete matching intake hood.
Filter
Optional filter module keeps out bugs and helps minimize accumulation of dust, dirt, and airborne particles in the space.
Access Doors
Full size doors provide easy access to fan, burner, and controls. Access doors are hinged and use industrial grade fasteners.
Blowers
Direct Fired units feature centrifugal blowers tested to AMCA standards and motors with adjustable bases.

© Mestex Ltd, Dallas, Texas 2004