Demand-Controlled Exhaust Systems for Boiler and Water Heaters




Multistory Fireplace & Exhaust Systems




White Paper on Demand Controlled Ventilation in Multi-Story, Multi-Residential Buildings



MBESV

Modulating Building Exhaust System for exhausting of low- and medium-volume multiple clothes dryers, kitchen hoods or bathrooms in multistory structures.
from Enervex®

The MBESV, Modulating Building Exhaust SystemTM is a demand controlled ventilation system designed specifically for multi-story buildings that have kitchen hoods, bathrooms or clothes dryers on multiple floors. Unlike traditional exhaust systems that operate at full speed 24/7, the demand-controlled ventilation system senses when no appliances are running and operates at a very low speed. Once the appliance starts, the internal appliance fan creates pressure inside the duct which make the control increase fan speed.

This system is similar to ENERVEX's MBES and MDVS systems but utilizes an EFV Exhaust Fan with vertical discharge. The EFV is a ruggedly designed fan build in cast aluminum.


MBES

Modulating Building Exhaust System - for exhausting of high-volume multiple clothes dryers, kitchen hoods or bathrooms in multistory structures.
from Enervex®

The MBES, Modulating Building Exhaust SystemTM adds support for high-volume kitchen hoods and bathroom on multiple floors. The MBES, and MBESV systems are extremely suitable for retrofitting.

Sustainable Advantages

Economical. Over a 15-year period a typical demand-controlled ENERVEX system serving 8 kitchen hoods costs 55% less to operate than a fixed speed CAV system. In addition it saves up to 85% of the cost of exhausted conditioned air.

Energy Savings. A typical kitchen or bathroom exhaust system operates less than 30% of the day. A demand-controlled exhaust system converts this into energy savings of 85% - this could amount to annual savings of $500 per kitchen hood and $200 per bathroom.

Quiet Performance. A well-balanced demand-controlled ventilation system eliminates constant fan noise and noise from speed variations.

Material and Labor Savings. A demand-controlled ventilation system can take 100% advantage of diversity, reducing duct sizes and thus material and labor. In addition multiple main ducts can be exhausted by a single fan.

Space Savings. Using diversity saves floor space as small ducts add open building space. One square foot per floor in a 20-story building can amount to as much as $5-10,000 per duct riser.

Aesthetics. Architectural discharge vents, which collect grease and dirt, are located on the wall which makes them very difficult to clean. Because the demand-controlled system discharges on the roof, it eliminates this problem.

Reliability. With ENERVEX's variable speed, direct-drive fans, broken belts are a thing of the past.

Other benefits of installing a MBES / MBESV system include:

  • LEED EA, MR, EQ, ID Qualified
  • Easy programming of essential functions
  • Spark-resistant construction with TEFC-motor with direct drive and true variable speed
  • Listed to UL705, Standard for Power Ventilators



  • MDVS

    Mechanical Dryer Venting System - for exhausting of multiple clothes dryers in multistory structures or in central laundry facilities.
    from Enervex®

    The MDVS, Mechanical Dryer Venting SystemTM is a demand-controlled ventilation system designed specifically for multi-story buildings that have clothes dryers on multiple floors or in a central laundry facility. Unlike traditional exhaust systems that operate at full speed 24/7, the demand-controlled ventilation system senses when no appliances are running and operates at a very low speed. Once the appliance starts, the internal appliance fan creates pressure inside the duct which make the control increase fan speed.

    The MDVS system is extremely suitable for retrofitting.

    Sustainable Advantages

    Economical. Over a 15-year period a typical demand-controlled ENERVEX-system serving 8 clothes dryers cost costs 55% less to operate than a fixed speed CAV system. In addition it saves up to 85% of the cost of exhausted conditioned air.

    Energy Savings. A typical clothes dryer operates less than 30% of the day. A demand-controlled exhaust system converts this into energy savings of 85% - this could amount to annual savings of $500 per dryer.

    Quiet Performance. A well-balanced demand-controlled ventilation system eliminates constant fan noise and noise from speed variations.

    Material and Labor Savings. A demand-controlled ventilation system can take 100% advantage of diversity, reducing duct sizes and thus material and labor. In addition multiple main ducts can be exhausted by a single fan.

    Space Savings. Using diversity saves floor space as small ducts add open building space. One square foot per floor in a 20-story building can amount to as much as $5-10,000 per duct riser.

    Aesthetics. Architectural discharge vents, which collect lint and dirt, are located on the wall which makes them very difficult to clean. Because the demand-controlled system discharges on the roof, it eliminates this problem.

    Reliability. With ENERVEX's variable speed, direct-drive fans, broken belts are a thing of the past.

    Other benefits of installing a MDVS system include:

  • LEED EA, MR, EQ, ID Qualified
  • Easy programming of essential functions
  • Spark-resistant construction with TEFC-motor with direct drive and true variable speed (inverter duty)
  • Listed to UL705, Standard for Power Ventilators with special consideration to exhaust of lint-laden air



  • MFES

    Multi-story Fireplace Exhaust SystemTM - for venting of multiple gas-fired fireplaces in multistory structures. Installation at termination point.
    from Enervex®

    The MFES, Multi-story Fireplace Exhaust SystemTM provides a perfect draft for gas-fired fireplaces exhausting into a common chimney and is essentially a variant of the CASV, Chimney Automation System. This is a well-tested, and listed, concept in mechanical venting of fireplaces in multi-story buildings. It features "on-demand" control that maintains a precise draft by constantly adjusting the exhaust rate to meet current needs. The concept can provide substantial savings over individually vented fireplaces by reducing material cost, as well as the space needed for individual vents.

    The Chimney Fan is installed at the termination point on the exterior of the building.

    Benefits of installing a MFES system include:

  • Takes up a minimal amount of space compared to gravity venting
  • Lets users operate their individual fireplaces by the flick of a switch
  • Integrated safety system makes fireplace operation safer than when fireplaces are vented individually
  • A Demand Controlled Volume system based on a unique PID look and fine-tuned control components
  • Extremely low noise level
  • Individual interlocks for fireplaces
  • Easy programming of essential functions
  • Cast aluminum chimney fan and impeller
  • High-temperature TEFC-motor with a Class H temperature rating, direct drive and true variable speed (inverterduty)
  • System and control are listed to UL378, Standard for Draft Equipment and CSA3-B255-M81 for Mechanical Flue Gas Exhausters
  • Maintenance free and service-friendly design


  • Questions about Enervex demand-controlled multi-story venting systems for Dryers, Kitchens, Bathrooms, or Fireplaces?

    Call us @ 513.721.2726

    (Southern Ohio and Northern Kentucky)

    Click here for a complete list of territories we serve.