Pentech Energy Recovery Controller
Pentech Energy Recovery ControllerThe  Pentech Energy Recovery Controller (PERC) reflects years of experience in energy  management. Pentech is on the leading edge of energy recovery technology including the installation and operation of controllers for residential and commercial usage.

The PERC is a specialized controller featuring the latest advances in integrated circuit design and "fuzzy" logic. Digital programming and non-volatile memory for setpoint values make the PERC a state-of-the-art controller. You achieve top energy savings while maintaining user comfort and air quality. the PERC also has built-in safeguards for your heating and cooling system.

The PERC installed on existing heating and cooling systems (2 to 40 ton cooling; up to 500,000 BTU furnaces) improves operating efficiencies 15% to 40% without the expense associated with purchasing new HVAC equipment.

Savings Through Energy recovery
PERC test setup and instrumentationThe PERC operates on a simple principle: Allow the existing HVAC system to function more efficiently and recover a portion of the energy lost from conduction or radiation of a cooling or heating system, then transfer it to useful purposes.

When an air conditioning system is not operating at full capacity, the PERC shuts down the compressor and condenser fan for a period, allowing the circulating fan to recover "cold BTUs" stored in chilled ductwork and system components. The compressor starts again once this store of cold energy has been depleted.

A similar technique is used for a heating system. When the heat pump or furnace is not operating at full capacity, the PERC shuts down the heat source, allowing the circulating fan to recover heat stored in system components. This warm air is delivered to the heated space.

During this recovery process, energy consumption is dramatically reduced. A typical installation can improve system efficiency and reduce energy costs by 15% to 40%. With an expected product life that exceeds the life of most heating and air conditioning systems, substantial savings can be realized by installing the PERC.

Latest Generation Energy Controller
The Pentech Energy Recovery Controller represents the third generation of solid state logic controllers and provides the "state-of-the-art" in energy savings and control features for air conditioning and heating systems. Previous generations operated on fixed time cycles or offered limited logic control of energy recovery cycle times.

The PERC takes the next step forward in heating and cooling automation.

Improved Operation Efficiency
The PERC is an economical way to improve the operating efficiency of existing HVAC systems without costly equipment replacement.

Indoor Air Quality
Room humidity is maintained as ASHRAE standards by sensors monitoring humidity levels in the return air duct. The sensors also monitor CO in the HVAC system and warn system operators when levels exceed indoor air quality standards.

Occupant Comfort
Safeguards are built into the system to protect HVAC equipment and assure that occupant comfort is not sacrificed to improve operational efficiency.

Demand Side Management
During peak energy demand, multiple PERC units can be sequenced to take units off-line for short periods to limit total system demand.

Efficiency Verification
The PERC can record data during a 28-day auto test to verify system efficiency and energy savings while in use.

Equipment Diagnostics
The PERC Programmer displays a range of diagnostic data for the user or service technician to identify potential HVAC service problems.

Remote Programming/Data Collection
The radio frequency feature allows the user to program the PERC from a remote location and receive test data from the unit. An optional interface package allows data transmission to a central computer.

PERC Applications
The PERC can be installed on most heating and cooling systems--2 to 40 ton cooling and up to 500,000 BTU furnaces in:
  • Housing Units
  • Office Buildings
  • Manufacturing Facilities
  • Warehouses
  • Commercial Buildings
  • Industrial Buildings

Installation and Customer Services
PERC engineers can evaluate your heating or cooling system to determine equipment life span, anticipated efficiency improvements and energy savings for the PERC. We will work closely with you to design and install a system best suited to your needs.

In addition to installing a stand alone PERC, our engineers can also integrate the PERC into energy management, indoor air quality or demand side management systems. Such custom designed and installed systems can maximize the benefits of energy conservation and demand reduction. Features available in an integrated system include remote data reporting, trend line monitoring and system diagnosis.

Pentech Energy Recovery Controller Handheld Programmer
Hand Held UnitAn optional feature for the Pentech Energy Recovery Controller is the handheld programmer. This portable device allows the installer to program PERC setpoints and retrieve operating and test data.

A standard modular phone jack connects the handheld programmer to your PERC. With only a few keystrokes, you can retrieve data from the PERC to check on energy savings, monitor test data or monitor any operation and cooling/heating system operation.

Also available is an accessory package that connects the handheld programmer to your system via an RF link for remote programming and data recovery. The RF link is ideal for rapid data recovery from multiple units or where limited access prevents close system attention.
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