Demand-Controlled Exhaust Systems for Boiler and Water Heaters
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Demand-Controlled Exhaust Systems for Boilers & Water Heaters T R U E G R E E N S AV I N G S

ENERVEX Makes it Easy and Economical to be Green If the exhaust system for a heating appliance (boiler or water heaters) does not provide a precise draft for the combustion, it causes the appliance to run inefficiently. An inefficient boiler is not only more expensive to run, but it emits a higher level of emissions. AIR ENERVEX’s demand-controlled exhaust system is designed to optimize the operation of a heating system by maintaining a precise ration of fuel to air, which relies on proper air supply and chimney draft. A Design That Fits Every Type of Building Hotels/Resorts Offices...

How Demand-Controlled Exhaust Works In order to operate efficiently, a boiler must maximize heat transfer by maintaining the precise ratio of fuel to air, which relies on proper air supply and draft. Because many factors affect the draft, including the boiler operation and outdoor temperatures and elements, maintaining the appropriate level can be difficult. Too much or too little draft can cause flame roll-outs or pilot light failures, as well as freezing pipes or drains in cold climates. A demand-controlled exhaust system maintains a precise draft by constantly adjusting the exhaust rate...

Sustainable Advantages Energy Savings ENERVEX Demand-Controlled Fan Cost Venting Material Space Cost Fan Operating Cost Venting Material Space Cost LifeCyde Cost (LLC) - 15 years, $1.2QTherm Over a 15-year period a typical demand- controlled exhaust system serving 4 high- efficiency boilers in a 20-story building costs 50% less to operate than a combined sys- tem without demand-control. Most of these savings are energy savings due to boiler ef- ficiency improvements. And savings can be further enhanced by adding an Economizer. Venting of 4 high-efficiency boilers in 20-story building...

Space Saving Combining chimneys and reducing diameters can save building space. A smaller footprint could save as much as $15,000 worth of space in a 20-story building. It also reduces clutter on the roof. Even more space can be saved if redirecting the chimney out through a sidewal Today's buildings are designed to be both functional and attractive. While the ENERVEX system provide great space savings, it can also keep chimney terminations out of sight. The same applies for combustion air supply where large outside gravity louvers or intakes can be replaced with small louvers when the...

Chimney Automation System (CASV) - Termination The Chimney Automation System (CASV) is a demand controlled exhaust system designed for commercia boilers and water heaters in buildings where the exhaust is powered by a chimney fan on Modulating Combustion Air-supply System that control both systems The forced-air louver, located substantially smaller than a gravity louver. constant pressure controller, demand-controlled rate stack is typically located nside a fire-rated chase designed to work with almost any type of heating controller is located inside the boiler room close to the boilers,...

Chimney Automation System (CASI) - Inline The Chimney Automation System (CASI) is a demand- controlled exhaust system designed for commercia boilers and water heaters in buildings where the exhaust is powered by a fan in the boiler room. This system is an option for tall buildings or a building that features sidewall ventilation. Modulating Combustion Air-supply System that control both systems When an inline draft fan often terminated with a The forced air louver, located substantially smaller than a gravity louver. The common vertical stack is typically located inside a fire-rated chase...

Modulating Over-Draft Damper The Modulating Over-Draft System (MODS) is a demand- controlled exhaust system that's designed for buildings that experience excessive draft in the chimney, which impacts the ability of the heating system to operate efficiently. CASV or CASI Chimney Automation System or/and a MCAS Modu- lating Combustion Air-supply System that provides combustion Exhaust is ventilated to the outdoors with or without a draft fan. The fan may be needed for multiple boiler below the parapet for aesthetics constant pressure controller, demand-controlled rate. tially smaller than a...

IPVB-ECO Power Venter with Boiler Economizer Save Energy, Reduce Emissions Typical applications are: boiler feedwater, makeup water, hot water return, hot water storage tank, condensate tank, process water, potable water The unique, patent-pending IPVB-ECO Power Venter with inte­ grated Boiler Economizer is designed for use with any boiler or water heater with round stacks. The combustion source can be any steam boiler or hot water boiler whether of atmopsheric or forced draft design. • Compact and highly efficient • A single IPVB-ECO economizer can handle multiple appliances For the first...

Redundancy for Critical Installations Extra Safety and Guaranteed Uptime Redundancy is critical in many applications such as hospitals and hotels - just to mention a couple. These are applications where possible downtime during repair, maintenance or system failure is not acceptable. Examples of other redundant systems are pumps, steam boilers, water heaters, generators etc ENERVEX offers redundant mechanical draft systems, over- draft damper systems and combustion air supply systems A typical redundant mechanical draft system consists of two ndividually operated CASI, Chimney Automation...

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