EP

In addition to the SEMCO EXCLU-SIEVE® energy recovery wheel, this dual-wall system contains backward curved supply and exhaust fans, outdoor air and return air filtration and an optional, full-electrical package with a single-point electrical connection. All EP family products are designed for either indoor or outdoor mounting.

• Suitable for new construction and can be retrofitted to most existing facilities.
• Pre-cools and dehumidifies outdoor air during the cooling season.
• Preheats and pre-humidifies the outdoor air during the heating season.
• Supplies preconditioned outdoor air to conventional HVAC systems, allowing them to effectively increase outdoor air percentages.
• Preconditioned outdoor air can be introduced to the return air plenum serving a central HVAC system.
• It can also be supplied directly to the conditioned space since the system’s recovery efficiency ranges between 74 and 85% (in balanced flow operation).

EPH, EPC, and EPHC

These products build on the EP product mentioned above. However, unlike the EP, they integrate full heating and cooling options. The cooling options include either chilled water or DX cooling coils, with options regarding the number of fins per inch and the number of row options. The heating options include either hot water, steam or electric coils.

These products are applied to installations where there is a need for 100 percent outdoor air. The SEMCO system is the primary source for temperature and/or humidity control. This includes hospitals, manufacturing areas, laboratories and casinos. These products are also used to precondition buildings where the outdoor air goes directly to the space, but requires additional post heating or cooling to supplement what is being provided by the energy recovery wheel.

EPCH

This product builds on the basic EP product, but integrates full cooling and re-heating. The cooling options include either chilled water or direct expansion (DX) cooling coils, with options regarding the number of fins per inch and the number of row options.

The heating options include either hot water, steam or electric coils.

Applications for this product include buildings that need high percentages of outdoor air for a humidity controlled environment, where the SEMCO system is the primary source. This product may be the sole source for temperature and humidity control. It also handles primarily latent loads by over-drying the outdoor air with the cooling coil and then re-heating to a temperature that is comfortable to the occupants.

EPD

This product builds on the EP product but integrates full cooling for humidity control and a sensible energy wheel to provide free reheat. This dual-wall system contains an EXCLU-SIEVE® energy recovery wheel, a sensible energy wheel, backward curved, supply and exhaust fans, outdoor air and return air filtration, cooling coil, limited capacity reheat coil and an optional full-electrical package including a single-point electrical connection. The cooling options include either chilled water or DX cooling coils, with options regarding the number of fins per inch and the number of row options. The heating options include either hot water, steam or electric coils.

The applications for this product include buildings that need high percentages of outdoor air for a humidity controlled environment where the SEMCO system provides 45-55 grains of water/pound of dry air and a neutral temperature of 65-70 degrees to the space. This approach allows conventional HVAC systems to operate most efficiently by cycling on and off, while using all re-circulated air and handling only sensible loads. Good applications for the EPD systems include classrooms, hotels, dormitories, casinos and laboratories. This approach to ventilation of humidity control is very energy efficient since the EPD system can generate up to 10 tons of latent cooling for every 3 tons input with no cost of re-heating.