Phason AEC-2 User manual

Automatic Environment Control
AEC-2 user manual

©2009, Phason Inc.
All rights reserved.
Printed in Canada.
10140404
2009-09-23

i
LIMITED WARRANTY
This warranty applies only to the Automatic Environment Control (AEC-2). If you need warranty
service, return the product and original proof of purchase to your dealer.
Phason Inc. (Phason) warrants this product subject to the following terms and conditions.
This warranty is valid only to the original purchaser of the AEC-2, for two years from the
manufacturing date. The manufacturing date is stated in the first eight digits of the serial number in the
form year-month-day.
Phason hereby warrants that should the AEC-2 fail because of improper workmanship, Phason will
repair the AEC-2, effecting all necessary parts replacements without charge for either parts or labor.
Conditions
Installation must be done according to our enclosed installation instructions.
The AEC-2 must not have been previously altered, modified, or repaired by anyone other than
Phason.
The AEC-2 must not have been involved in an accident, misused, abused, or operated or installed
contrary to the instructions in our user and/or installation manuals. Phason's opinion about these
items is final.
The person requesting warranty service must be the original purchaser of the AEC-2, and provide
proof of purchase upon request.
All transportation charges for products submitted for warranty must be paid by the purchaser.
Except to the extent prohibited by applicable law, no other warranties, whether expressed or implied,
including warranties of merchantability and fitness for a particular purpose, shall apply to the AEC-2.
Any implied warranties are excluded.
Phason is not liable for consequential damages caused by the AEC-2.
Phason does not assume or authorize any representatives, or other people, to assume any obligations or
liabilities, other than those specifically stated in this warranty.
Phason reserves the right to improve or alter the AEC-2 without notice.

ii
Service and technical support
Your dealer will be happy to answer all technical questions that will help you use the AEC-2
Before contacting your dealer or Phason, check the following:
Read this manual for information about the feature with which you are having trouble.
If you still have a problem with the AEC-2, collect the following information:
−Model/serial number
−A description of the problem
My dealer’s name:
Street/PO Box
City
State/Province
Zip/Postal
Phone
Fax
E-mail
How to contact my dealer:
Web site
2 Terracon Place
Winnipeg, Manitoba
Canada
R2J 4G7
Phone
Fax
E-mail
Web site
204-233-1400
204-233-3252
[email protected]
www.phason.ca

iii
Table of contents
Features of the AEC-2 ........................................................................................................... 1
Getting started ....................................................................................................................... 2
AEC-2 electrical ratings .................................................................................................. 4
Equipment list ................................................................................................................. 5
Getting to know the AEC-2 ................................................................................................... 6
Definition of terms .......................................................................................................... 7
Adjusting the AEC-2 ............................................................................................................. 8
Selecting a new operating program ................................................................................. 8
Changing parameter settings ........................................................................................... 9
Setup parameters ........................................................................................................... 11
Programming tips .......................................................................................................... 11
Reloading the factory programs .................................................................................... 13
AEC-2 operation .................................................................................................................. 14
Factory program C operation ........................................................................................ 14
Cutback speed operation ............................................................................................... 16
Parameter descriptions .................................................................................................. 18
Parameter ranges ........................................................................................................... 21
Factory programs .......................................................................................................... 22
Methods of use .................................................................................................................... 23
Programs ....................................................................................................................... 23
Alert messages ..................................................................................................................... 24
Care and maintenance .......................................................................................................... 26
Power factor correction ....................................................................................................... 27
Appendix A - Wiring diagrams ......................................................................................... A-1
Appendix B - Self-test procedure ...................................................................................... B-1
Appendix C - Troubleshooting guide ................................................................................ C-1
Appendix D - Blank program tables .................................................................................. D-1

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Features of the AEC-2
The Automatic Environment Control (AEC-2), is a microprocessor based product designed to efficiently
control the environment in livestock buildings. It connects to a variable speed fan, a combination of
secondary fans and heaters and an alarm system. When operating, the AEC-2 measures and displays the
room temperature. While monitoring the temperature it controls the connected ventilation and heating
equipment according to the programmed settings to keep the temperature at the desired point. The
program settings can be adjusted in order to change the turn on points and other parameters of the stages.
The following is a list of the standard features of the AEC-2.
•Digital display of temperature, alerts and settings
•8 programs with pre-programmed factory settings which can be easily changed
•A built-in keyboard to allow easy adjustment of settings
•2 stages of user definable relay contacts to control secondary fans or heaters
•A relay to signal high or low temperature, power interruptions or low line voltage alerts
•Internal memory is retained during power failures
•120/230 VAC operation @ 12.5 amps output for variable speed fan (with RFI noise
suppressor to eliminate radio and T.V. interference)
•3 second full power turn on for variable speed output to minimize fan freeze-up
•Transient protected
•Compact design, 18cm/7" (H) x 23cm/9" (W) x 9.5cm/3.75" (D)
•Non-corrosive, fire retardant enclosure
•2-year warranty
•Extendable sensor

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Getting started
Congratulations on the purchase of your new AEC-2 environment control! This manual has been
prepared to help you get the utmost in satisfaction from your AEC-2. It contains detailed information
regarding the installation and operation of the control. The Getting Started section will step you through
the installation and configuration of your AEC-2. The following steps refer to other sections of this user's
guide for additional information. For this reason, it is not necessary to read through the entire document
from front to back, but rather in the order that the information is needed.
CHECKING RATINGS OF EQUIPMENT
STEP 1
Read the AEC-2 ELECTRICAL RATINGS on page 4.
Fill in the EQUIPMENT LIST on page 5.
WARNING: The equipment to be connected to the AEC-2 control must not
draw more current than what the AEC-2 stages are rated for. Use of equipment
that is rated higher than the AEC-2 will result in damage to the control and will
void the warranty.
INSTALLATION
STEP 2
Follow the instructions in Appendix A for installing and wiring the AEC-2
and equipment. Be sure to read the General Warnings section in Appendix
A before installation.
TESTING
STEP 3
Turn to Appendix B and follow the instructions there to test the operation of
the equipment installed and to ensure that it is connected properly.

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SETTING UP
STEP 4
Read through the ADJUSTING THE AEC-2 section starting on page 8 and
get familiar with the programming procedures.
Configure the AEC-2 according to the type of equipment connected.
Mark the changes in the Blank Program Tables in Appendix D.
PUTTING CONTROL INTO SERVICE
STEP 5
Read the AEC-2 OPERATION section starting on page 14.
Select the most useful factory program, see page 22.
Make changes to the program as desired, see page 9.
Mark the changes in the Blank Program Tables in Appendix D.
METHODS OF USE
STEP 6
Read the METHODS OF USE section starting on page 23.

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AEC-2 electrical ratings
Incoming power
Variable stage
Variable stage fuse
Relays
Alarm relay
120/230 VAC, 50/60 Hz
12.5 A at 120/230 VAC, general-purpose (resistive)
9 FLA at 120/230 VAC, PSC motor
1/2 HP at 120 VAC, 1 HP at 230 VAC, PSC motor
15 A, 250 VAC ABC-type ceramic
6 A at 120/230 VAC, general-purpose (resistive)
1/3 HP at 120 VAC, 1/2 HP at 230 VAC
360 W tungsten at 120 VAC
0.4 A at 125 VAC; 2 A at 30 VDC, resistive load
0.2 A at 125 VAC; 1 A at 30 VDC, inductive load
NOTE: This is not a wiring diagram. All wiring diagrams are located in Appendix A.

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Equipment list
Make and Model # of fan(s):
Max. Total Current Draw of fan(s):
Maximum 12.5 A. See the Warning
section in Appendix A.
Variable Speed
Stage 1
Operating Voltage:
Make and Model # of fan/heater:
Max. Total Current Draw: *
Cool / Heat
Stage 2
Operating Voltage:
Make and Model # of fan/heater:
Max. Total Current Draw: *
Cool / Heat
Stage 3
Operating Voltage:
Alert Alert relay connected to:
* A power contactor must be used if the maximum total current draw is greater than the maximum
ratings of the internal relay. See the maximum ratings section on page 4.

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Getting to know the AEC-2
1 PROGRAM button - used to select the
desired operating program. 7 UP button -used to increase the value of a
parameter.
2
STORE button - used to save selected
programs and parameter settings in
memory.
8 STAGE 1 indicator light.
3 PARAMETER button - used to scroll
through the parameter list. 9 STAGE 2 indicator light.
4 Digital display - shows the temperature
and settings. 10 STAGE 3 indicator light.
5 RETURN button - used to return back to
normal operation. 11 Complete parameter list.
6 DOWN button - used to decrease the value
of a parameter.

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Definition of terms
NORMAL OPERATION The AEC-2 is in normal operation when it is displaying the room temperature.
When alerts occur, the display will alternately flash the alert message and the
room temperature.
PROGRAMS Programs consist of Main, Differential, Alerts and General parameters. The
AEC-2 has eight programs which can be selected and reprogrammed by the
user.
OPERATING PROGRAM The AEC-2 operates according to the parameters in the operating program.
Any one of the programs may be selected as the operating program.
PARAMETER LIST The parameter list is printed on the front of the AEC-2 and also shown on
page 21. It is a list of all the parameters that may be programmed by the user.
PARAMETERS Parameters are the individual settings which may be programmed. Read the
PARAMETER DESCRIPTIONS section on page 18 for an explanation of
each parameters. There are five parameter categories.
1) Main - The MAIN parameters control the main operation of the control.
2) Differential - These parameters are programmable differentials. They are
the number of degrees above or below the temperature set point the particular
stage starts or turns on.
3) Alerts - These parameters set the point at which the temperature alerts
activate.
4) General - GENERAL parameters are common to all programs. These
parameters can have only one setting which is the same in all programs.
5) Setup - SETUP parameters control the overall operation of the unit. These
parameters have only one setting which is the same in all programs.

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Adjusting the AEC-2
Selecting a new operating program
As livestock matures, often a change in the room climate is needed. The AEC-2 has eight different
programs in memory for eight different climate settings. Any one of the programs can be chosen as the
operating program. In order to change the operating program of the AEC-2, follow the instructions listed
below. For a list of the factory settings in the programs see Table 2, on page 22.
1) Press the PROG button once.
The AEC-2 will display the current operating program, (A,
b, C, d, E, F, g or H). The display will flash the program
name and Pr.
2) Press the PROG button a number of times until the desired
program is displayed.
By pressing the PROG button, the program names are
displayed one after another. To change to a different
operating program, press the PROG button until the proper
program is displayed.
3) Press the STORE button to enter the desired program into
memory.
When the correct program is displayed, pressing the
STORE button will tell the AEC-2 to use the selected
program as the operating program. After Stor is displayed,
the AEC-2 returns to normal operation.

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Changing parameter settings
Follow the steps below to view and/or edit the parameters in any program. After the parameters have been
edited, the changes should be marked in the Blank Program Tables in Appendix D for future reference.
1) Press the PROG button until the program that you want to edit
is displayed.
The display will flash the program letter, (A to H) and Pr.
NOTE: If the operating program is to be edited, step 1 may be
skipped. The parameters of the operating program will be
displayed by default.
2) Press the PARM button once.
The first (left most), digit shows the program that is being
edited.
The second digit indicates if the program is the operating
program. An o means the program is the operating program, a
blank means it is not the operating program.
The two right most digits show the parameter number to
be edited.
3) Press the UP or DOWN key to turn memory protect off.
The display will show Ao 0 and then °FF indicating memory
protect has been turned off. The parameters can now be
adjusted. If memory protect is not turned off, the parameters
can only be viewed. Attempting to adjust the parameters while
memory protect is on will result in an Err message being
displayed.

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4) Press the PARM button to step through the parameter list
until the desired parameter is reached.
Refer to the front cover of the AEC-2 control or Table 1 on
page 21 for the parameter list.
5) Use the UP / DOWN buttons to adjust the setting.
The parameter can be adjusted to any value with in the valid
range. The ranges are shown on page 21.
6) Press STORE to save the setting in memory.
The display will show Stor for 1 second indicating the new
setting has been stored in memory. If the PARM button is
pressed before pressing STORE the next parameter will
appear and the previous one will change back to its previous
setting.
Continue through the parameter list by pressing the PARM
button and making changes to the settings where needed.
Follow the same procedure shown in steps 4 to 6 above.
7) To return to normal operation (displaying of room temperature)
at any time, press the RETURN button.
When RETURN is pressed, memory protect is automatically
turned back on. If a parameter has been changed but the value
has not been stored, pressing RETURN will change the
parameter's setting to the last stored setting and then press
RETURN again to return to normal operation.
NOTE: If the AEC-2 is left displaying a parameter it will revert back to normal operation in 1 minute
automatically. If STORE was not pressed the displayed parameter will change back to its previous value.

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Setup parameters
The setup parameters should be programmed when the installation has been completed to configure the
AEC-2, and then generally the parameters do not need to be reprogrammed. These parameters are
different than the other parameters because they can have only one setting and cannot be edited in the
normal way. Each setup parameter setting is common to all programs. Follow the instructions below to
access the setup parameters.
When the setup parameters have been programmed the blank program table in Appendix D should be
filled in with the new settings for future reference. It is important that the Configuration decal, included
with the AEC-2, is marked correctly and affixed to the side of the AEC-2 when the setup parameters have
been programmed. The Configuration decal provides a handy reference when you need to check the mode
of operation of the staged outputs.
To Edit the Setup Parameters
Press the PARM button once to enter the edit mode. If you wish
to edit the setup parameters, you must turn off memory protect
now. See page 9 to turn off the memory protection.
Next press the PROG and PARM buttons simultaneously to
access the setup parameters. The Setup parameters can be
adjusted as desired and stored in the same way the normal
parameters can. After the setup parameters have been changed
and stored, press the RETURN button to return to normal operation.
Programming tips
Scrolling Backwards
When viewing or editing the parameters, sometimes it is helpful
to scroll backwards through the parameter list. To do this, press
the PARM and UP buttons simultaneously. Instead of the AEC-2
displaying the next parameter on the list, it will display the
previous parameter.

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Selecting a Parameter to Edit
The parameters are stored in a table in memory which is similar to the Factory Program Table on page 22.
Any parameter in any program can be edited when memory protection has been turned off. Follow these
procedures when editing parameters to become more efficient.
To move down to the next parameter press the PARM button.
To move up or backwards to the previous parameter press the PARM and UP buttons simultaneously.
To move right press the PROG button until the desired program is displayed, then press the PARM button
once to edit the same parameter number that was being edited before.
To Move Button(s)
ªPARM
©PARM and UP
¨PROG
An example where this method of programming is useful would be a situation where the temperature set
point of each program needs to be changed. This could be done by turning off memory protection and
changing the temperature set point in the operating program, (the operating program is displayed with an
o and the program name). Then press the PROG button two times to edit the next program. Press the
PARM button and edit the parameter. To continue to the next program press the PROG button two times
again. Remember that STORE must be pressed after each change to save the new setting in memory.
Fast Editing
When editing the setting of a parameter by adjusting it up or down,
hold down either button and then press the other one. This will
change the setting ten times faster. If you want to increase the
setting, hold down the UP button and then press the DOWN
button. The setting will increase ten times faster. To decrease the
setting ten times faster, hold down the DOWN button and then
press the UP button.

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Reloading the factory programs
The factory programs can be reloaded if so desired to replace the existing programs. If the existing
programs are not operating properly or need to be changed back to the original factory programs, follow
the steps below to reload the factory programs.
When the factory programs are reloaded, all of the existing programs including the setup parameters will
be replaced. The AEC-2 will begin with program A as the operating program. The programs and most
importantly the setup parameters will need to be reprogrammed for the equipment that is connected. Pay
close attention to the configuration of Stages 2 and 3.
1) Turn off the power to the AEC-2.
2) Hold down the PROG and STORE buttons.
3) While holding the buttons down, turn the power back on. The
display will flash Stor for two seconds and then the AEC-2 will
be in the normal operating mode, displaying the room
temperature and a power failure alert.

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AEC-2 operation
Factory program C operation
Figure 2 shows the operation of each stage of the AEC-2. This particular diagram shows when the stages
will turn on and off if the AEC-2 is operating according to the factory settings in program C. Some
settings are listed here but the entire factory program table can be found on page 22. The circled numbers
correspond to the parameter numbers. Use these numbers to cross reference the parameters in the diagram
to their descriptions.
NOTE: All stages have a programmable hysteresis, parameter 18, which is not shown on the diagram.
PARAMETER SETTINGS
1 Temp Set (Start P-Band) 85.0°F
2 Stage 1 Min Vent 20
3 Cutback Speed 99
4 Stage 1 Off-Set-Back -5.0
5 Stage 1 P-Band 3.0
6 Stage 2 Turn On 5.0
7 Stage 3 Turn On -2.0
8 Low Temp Alert -7.0
9 High Temp Alert 13.0
NOTE: When the variable speed stage turns on, it will run full speed for three seconds and then decrease
to the required speed.
EXAMPLE
As an example, say the temperature is 75°F and rising. At this point Stage 3 (heat) will be on and the Low
Temperature Alert. When the temperature rises to 78°F the Low Temp Alert will turn off. At 80°F the
Stage 1 fan will begin the Off-Set-Back (OSB) region. The Stage 1 fan will run at full speed for three
seconds and then slow down to the Minimum Ventilation setting.
When the temperature reaches 83°F Stage 3 (heat) will turn off. At 85°F the Stage 1 P-Band starts. While
the temperature rises in the P-Band the Stage 1 fan will increase in speed. At 88°F Stage 1 will reach full
speed.
When the temperature rises to 90°F Stage 2 (cool) turns on. At 98°F the High Temperature Alert will turn
on.