Phason PEC User manual

User manual and
installation guide

Copyright Phason Inc. Printed in Canada
All rights reserved. 31045004
About the manual
The manual describes the features of your PEC and how to use them; it does not describe
ventilation strategies.
All buttons and menu commands are bolded.
For example, "Press Program until the LED for Alarm is lit."
All LED display examples are in an LED font.
For example, "Press Up or Down until a 20 displays and then press Select."
This is a hint or tip. It contains helpful information that might make it easier for you
to set up or use your PEC.
This is a note. It contains information that may help you better understand your
PEC.
This is a caution. It contains important information that you must follow when
installing or servicing your PEC. Failure to follow this information can lead to
damaged controls or equipment.
This is a warning. It contains important safety information that you must follow when
installing or servicing your PEC. Failure to follow this information can lead to
damaged controls or equipment, electrical shocks, or severe injury.

iii
Table of contents
Chapter 1: Introducing the PEC ........................................................................................5
Introducing the PEC ..................................................................................................................................5
Common applications ...........................................................................................................................5
Features.................................................................................................................................................6
Becoming familiar with the PEC ................................................................................................................7
Menu layout ...........................................................................................................................................8
Chapter 2: Installing your PEC ..........................................................................................9
What you need to know before installing your PEC..................................................................................9
Understanding power surges and surge suppression..........................................................................9
Reducing electrical noise using filters .................................................................................................10
Electrical ratings ..................................................................................................................................11
Using power contactors to increase the capacity of relays.................................................................11
Proportional Environment Control layout ............................................................................................12
Mounting your PEC .............................................................................................................................13
Connecting equipment to your PEC .......................................................................................................13
Connecting an actuator .......................................................................................................................13
Connecting single-stage heating or cooling elements........................................................................15
Connecting variable-stage cooling elements ......................................................................................16
Using three-phase power ....................................................................................................................16
Connecting an alarm system...............................................................................................................17
Connecting temperature probes .........................................................................................................18
Connecting the power source .............................................................................................................20
Finishing the installation ..........................................................................................................................20
Chapter 3: Configuring your PEC....................................................................................22
What you need to know before configuring your PEC............................................................................22
Configuring the main control functions ...................................................................................................23
Selecting the temperature units, parameter 24...................................................................................23
Selecting the operating frequency, parameter 25...............................................................................23
Configuring hysteresis, parameter 33 .................................................................................................24
Configuring the stages ............................................................................................................................24
Configuring variable stages, parameters 26 and 27 ...........................................................................25
Configuring relay stages, parameters 28 to 30 ...................................................................................26
Configuring the inlet actuator, parameter 31.......................................................................................27
Calibrating an actuator, parameter 32.................................................................................................27
Testing the configuration.........................................................................................................................28
Chapter 4: Programming the PEC...................................................................................29
What you need to know before programming your PEC........................................................................29
Understanding how the PEC operates................................................................................................29
Programming the parameters .................................................................................................................32
Programming the group set point, parameter 1..................................................................................33
Programming variable stages, parameters 2 to 9 ...............................................................................33
Programming relay stages, parameters 10 to 14................................................................................35
Programming inlet actuator, parameters 15 to 21...............................................................................39
Programming alarm settings, parameters 22 and 23..........................................................................40

iv
Chapter 5: Monitoring and maintaining your PEC ..........................................................43
Monitoring your PEC ...............................................................................................................................43
Displaying the minimum and maximum temperatures........................................................................43
Selecting the operating program.........................................................................................................44
Acknowledging alarms ........................................................................................................................44
Testing settings and equipment..............................................................................................................46
Using stage override mode .................................................................................................................46
Using temperature override mode.......................................................................................................47
Using the actuator position display .....................................................................................................48
Servicing and maintaining your PEC.......................................................................................................48
Enabling and disabling ventilation.......................................................................................................48
Enabling and disabling actuator deicing.............................................................................................49
Restoring the factory defaults..............................................................................................................50
Saving and restoring settings..............................................................................................................50
Displaying the firmware version...........................................................................................................52
Updating the firmware .........................................................................................................................52
Replacement kits and optional accessories........................................................................................54
Appendixes ......................................................................................................................56
Appendix A: Glossary ..............................................................................................................................56
Appendix B: Troubleshooting..................................................................................................................58
Alarm and error messages ..................................................................................................................59
Troubleshooting...................................................................................................................................60
Determining correct actuator feedback wiring ....................................................................................62
Appendix C: Factory defaults ..................................................................................................................63
Appendix D: Installation worksheet .........................................................................................................65
Appendix E: Configuration worksheets...................................................................................................66
Main control function worksheet .........................................................................................................66
Variable stage configuration worksheet ..............................................................................................66
Relay configuration worksheet ............................................................................................................67
Appendix F: Settings worksheets............................................................................................................67
Variable stage settings worksheet.......................................................................................................67
Actuator settings worksheet ................................................................................................................68
Relay stages worksheet.......................................................................................................................68
Alarm settings worksheet ....................................................................................................................69
Appendix G: Motor curves.......................................................................................................................69
Index ................................................................................................................................71

5
Chapter 1: Introducing the PEC
Chapter 1 introduces you to the Proportional Environment Control (PEC). Read chapter 1 before
reading the rest of the manual. Topics in chapter 1 include:
Introducing the PEC below
Becoming familiar with the PEC on page 7
Introducing the PEC
The 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 and a single zone. 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
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
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).

Chapter 1: Introducing the PEC Phason
6
Business and light-industrial applications
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, range: -13 to 125°F (-25 to 51.7°C)
Seven configurable operating programs
Two variable cooling stages for controlling fans
Three general-purpose relays (heat or cool)
Two inlet control relays
One alarm relay (for external alarm system or siren)
Four-character LED display and individual stage LEDs
Minimum and maximum temperature logging
Error code display
Manual override/test mode
Selectable motor curves
Ventilation disable option
Three-second full-power-turn-on for minimizing fan ice-up
Actuator deicing
Power-failure settings protection
One temperature probe input
Thirty-foot temperature probe, extendable to 500 feet
 Easy System compatible—edit and store configuration and settings on a computer. For more
information, visit www.phason.ca.
Rugged enclosure (corrosion resistant, water resistant, and fire retardant)
CSA approval
Limited warranty (two years)

PEC user manual Becoming familiar with the PEC
7
Becoming familiar with the PEC
The four-character LED display shows temperatures, alarm messages, and programming
information. If there is a dot in the top left corner of the display, you are in an editable menu.
If you leave the PEC in a menu or display other than the main display, the control
returns to the main display after five minutes without any key presses. The only
exceptions are stage override mode and temperature override mode; the control
remains in these modes until you manually exit them.

Chapter 1: Introducing the PEC Phason
8
Menu layout

PEC user manual What you need to know before installing your PEC
9
Chapter 2: Installing your PEC
Chapter 2 explains how to mount, install, and connect equipment to your PEC. Topics in chapter 2
include:
What you need to know before installing your PEC below
Connecting equipment to your PEC on page 13
Finishing the installation on page 20
What you need to know before installing your PEC
Before installing your PEC, you need to do some initial preparation:
1. Read Understanding power surges and surge suppression below.
If you do not install external surge suppression devices, you risk damage to
the electronics inside your PEC, which may cause your PEC to fail.
Because it is not possible to completely protect this product internally from
the effects of power surges and other transients, we highly recommend
that you install external surge suppression devices. For specific
recommendations, see your electrical contractor.
If you do not take these precautions, you acknowledge your willingness to
accept the risk of loss or injury.
2. Using Appendix D: Installation worksheet on page 65, list all the equipment you want to control
using this PEC. Install the equipment and make your electrical connections according to the
sheet.
3. Using Appendix E: Configuration worksheets on page 66, decide which relays and variable
stages you want to use for each piece of equipment, and how you want the equipment
configured. You can connect more than one piece of equipment to a single relay or stage as long
as the total current draw does not exceed the relay or stage’s limit. For more information, read
Electrical ratings on page 11.
Understanding power surges and surge suppression
Power surges can be caused by external influences (for example, lightning or utility distribution
problems) or they can be caused internally (for example, starting and stopping inductive loads such
as motors).

Chapter 2: Installing your PEC Phason
10
One of the most common causes of power surges is lightning. When lightning strikes the ground, it
produces an enormously powerful electromagnetic field. This field affects nearby power lines, which
transmit a surge to any device connected to it, such as lights, computers, or environmental controls
like your PEC. Lightning does not have to strike a power line to transmit a surge.
Surge suppression devices offer some protection from power surges. Because it is not possible to
internally protect this product completely from the effects of power surges and other transients,
Phason highly recommend that you install external surge suppression devices. For specific
recommendations, see your electrical contractor. If you do not take these precautions, you
acknowledge your willingness to accept the risk of loss or injury.
Reducing electrical noise using filters
Electrical noise is caused by high voltage transients created when inductive loads, such as power
contactors, are switched on or off. The strength of the transients can be over 1000 volts and can
vary with the type of equipment and wiring, as well as several other factors.
Visible symptoms of electrical noise include erratic control operation, cycling inlets, communication
problems, and more. However, the effects of electrical noise are not always visible . Over time,
electrical noise can cause electronic circuits, relay contacts, and power contactors to deteriorate.
Installing filters helps extend the life of equipment
Filters help prevent electrical noise problems by absorbing the transient energy. Even if you do not
have visible symptoms of electrical noise, filters help keep controls operating reliably and can extend
the life of the controls and equipment connected to them.
Phason’s snubber filters (part number 127-0) are for use with solenoids, timer relays, DC motors,
furnaces, and other equipment connected to the control’s relays. You can also use the filters with
loads connected to power contactors (part number 129-0).
Install a filter in parallel with the load, as shown in the following example.