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Proportional Environment Control (PEC)

A proportional environment control with inlet capability

The Proportional Environment Control (PEC) automatically controls the temperature in a room by operating two variable speed fans, an inlet actuator, and up to three single-speed fans or heaters.

Easy to use and program

The PEC comes with four factory-configured operating programs you can easily reconfigure for your ideal situation.

The easy-to-use keypad and menu system make the PEC one of the easiest controls to program. The PEC's advanced and powerful features are never more than a few keystrokes away.

Versatility and peace of mind

The PEC has a 30-foot temperature probe that monitors temperatures from –49 to 122°F (-45 to 50°C). For more versatility, you can connect four temperature probes together and use four-zone averaging. Temperature probes are available in 1, 6, 30, 75, or 150-foot lengths; you can extend them up to 500 feet using extension cable.

You can connect the PEC to an alarm siren or other external alarm system. Customizable alarm settings allow you to choose which alarm conditions you want to be notified about.

Common applications

Livestock applications include buildings housing calves, rabbits, goats, hogs, poultry, and turkey. In these applications, the PEC often controls ventilation in a single 20 x 40-foot or smaller room. However, the PEC is not restricted to small rooms; some customers use it to control ventilation in sow breeding rooms that are 200 feet long.

Greenhouse applications include controlling ceiling louvers, variable and single-speed fans, and heaters. Some operations use the proportional feature for misting or ground heat (water pipes).

Business and light-industrial applications include machine shops, garages, and utility sheds where customers use the PEC to control fans and inlets. The PEC exhausts heat from the room made by equipment and/or regulates the temperature as service bays open and close.

Features

• Automatic temperature-based control
• Four configurable operating programs
• Two variable cooling stages for controlling fans
• Three general-purpose relays (heat or cool)
• Two inlet control relays (open and close)
• One alarm relay (for external alarm system or siren)
• Customizable alarm settings
• Four-character LED display and individual stage LEDs
• Error code display
• Manual override/test mode
• Power-failure memory protection
• Three-second full-power-turn-on for minimizing fan ice-up
• Thirty-foot temperature probe, extendable to 500 feet
• Easy System compatible—use the optional PEC Updater to update firmware, or the PEC Saver to save or restore settings and configuration
• Rugged enclosure (corrosion resistant, water resistant, and fire retardant)
• CSA approval
• Two-year limited warranty

Electrical ratings

Input: Variable stages:  Relay stages: Inlet relays: Alarm relay: Fuses: (2)

120/230 VAC, 50/60 Hz 7.5 A at 120/230 VAC, general-purpose (resistive) 5 FLA at 120/230 VAC, PSC motor 1/3 HP at 120 VAC, 1/2 HP at 230 VAC, PSC motor 4.4 A at 120 VAC, 2.2 A at 230 VAC, general-purpose (resistive) 1/6 HP at 230 VAC 360 W tungsten at 120 VAC 4.4 A at 120 VAC, 2.2 A at 230 VAC, 5 A at 30 VDC 0.4 A at 125 VAC, 2.0 A at 30 VDC, resistive load 0.2 A at 125 VAC, 1.0 A at 30 VDC, inductive load 12 A, 250 VAC ABC-type ceramic

Available options

• PEC Saver—store a complete copy of a PEC's configuration and settings. You can restore the information any time, or use it to set up new PECs in seconds!
• PEC Updater—upgrade your PEC's firmware with new features as they become available. The PEC Updater takes only seconds to use and can upgrade all your PECs.
• Power contactors—increase the load handling capability of the PEC's relays and are ideal for secondary ventilation fans and electric heaters.
• Temperature probes and extension cable—use four-zone temperature averaging. Probes are available in 1, 6, 30, 75, or 150-foot cable lengths and can extended up to 500 feet using extension cable.
• Easy System—combine easy-to-use and intuitive software with a programmer. The Easy Programmer reads and writes from Phason Easy-compatible Savers. The Easy Software, available free from www.phason.ca, allows you to quickly enter programming information and then save it as a file or write it to a Saver.

Additional information

• PEC user manual (PDF - 1139K)
• PEC feature sheet (PDF - 142K)
• "OLD" versus "NEW" PEC comparison (PDF - 154K)
• OLD PEC user manual (PDF - 1185K)
• Service bulletin 11 - Chimney ventilation (PDF - 888K)
• Ventilation control overview (PDF - 35K)

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