Phason TVS User manual

User manual and
installation guide

31046005
Copyright Phason Inc.
All rights reserved.
Printed in Canada

About the manual
The manual describes the features of your control 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 control.
This is a note. It contains information that may help you better understand your
control.
This is a caution. It contains important information that you must follow when
installing or servicing your control. 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 control. Failure to follow this information can lead to
damaged controls or equipment, electrical shocks, or severe injury.

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Table of contents
Chapter 1: Introducing the TVS .........................................................................................7
Introducing the TVS...................................................................................................................................7
Common applications ...........................................................................................................................7
Features.................................................................................................................................................8
Becoming familiar with the TVS.................................................................................................................9
Menu layout .........................................................................................................................................10
Chapter 2: Installing your TVS.........................................................................................11
What you need to know before installing your TVS ................................................................................11
Understanding power surges and surge suppression........................................................................11
Reducing electrical noise using filters .................................................................................................12
Electrical ratings ..................................................................................................................................13
Using power contactors to increase the capacity of relays.................................................................13
TVS layout............................................................................................................................................14
Mounting your TVS..............................................................................................................................15
Connecting equipment to your TVS ........................................................................................................15
Connecting the power source .............................................................................................................15
Connecting temperature probes .........................................................................................................16
Connecting variable-stage cooling elements ......................................................................................17
Using three-phase power ....................................................................................................................18
Connecting single-stage heating or cooling elements........................................................................18
Connecting an alarm system...............................................................................................................19
Finishing the installation ..........................................................................................................................20
Chapter 3: Configuring your TVS ....................................................................................22
What you need to know before configuring your TVS ............................................................................22
Configuring the main control functions ...................................................................................................23
Selecting the temperature units, parameter 13...................................................................................23
Selecting the operating frequency, parameter 14...............................................................................23
Configuring hysteresis, parameter 18 .................................................................................................24
Configuring the stages ............................................................................................................................25
Configuring variable stages, parameters 15 and 16 ...........................................................................25
Configuring the relay stage, parameter 17..........................................................................................26
Testing the configuration.........................................................................................................................26
Chapter 4: Programming the TVS ...................................................................................27
What you need to know before programming your TVS.........................................................................27
Understanding how the TVS operates ................................................................................................27
Programming the parameters .................................................................................................................29
Programming the Group set point, parameter 1 .................................................................................29
Programming variable stages, parameters 2 to 9 ...............................................................................30
Programming the relay stage, parameter 10.......................................................................................31
Programming alarm settings, parameters 11, 12, 24 to 27.................................................................32
Chapter 5: Monitoring and maintaining your TVS...........................................................35
Monitoring your TVS................................................................................................................................35
Displaying the minimum and maximum temperatures .......................................................................35
Selecting the operating program, parameter 0 ...................................................................................36

vi
Acknowledging alarms ........................................................................................................................36
Testing settings and equipment..............................................................................................................37
Using stage override mode, parameter 28..........................................................................................37
Using temperature override mode, parameter 29 ...............................................................................38
Servicing and maintaining your TVS .......................................................................................................39
Enabling and disabling ventilation.......................................................................................................39
Restoring the factory defaults, parameter 21 ......................................................................................40
Saving and restoring settings, parameters 19 and 20 ........................................................................40
Displaying the firmware version, parameter 23 ...................................................................................42
Updating the firmware, parameter 22..................................................................................................42
Replacement kits and optional accessories........................................................................................44
Appendices......................................................................................................................46
Appendix A: Glossary ..............................................................................................................................46
Appendix B: Troubleshooting..................................................................................................................47
Alarm and error messages ..................................................................................................................48
Troubleshooting...................................................................................................................................49
Appendix C: Factory defaults ..................................................................................................................51
Appendix D: Installation worksheet .........................................................................................................52
Appendix E: Configuration worksheets...................................................................................................53
Main control function worksheet .........................................................................................................53
Stage configuration worksheet............................................................................................................53
Appendix F: Settings worksheets............................................................................................................54
Variable and relay stages settings worksheet .....................................................................................54
Alarm settings worksheet ....................................................................................................................54
Appendix G: Motor curves.......................................................................................................................55
Index ................................................................................................................................57

7
Chapter 1: Introducing the TVS
Chapter 1 introduces you to the Three Ventilation Stage Control (TVS). Read chapter 1 before
reading the rest of the manual. Topics in chapter 1 include:
Introducing the TVS below
Becoming familiar with the TVS on page 9
Introducing the TVS
The TVS automatically controls the temperature in a room by operating two variable speed fans and
a single-speed fan or heater. To control the temperature, the TVS operates the connected ventilation
and/or heating equipment according to programmed settings.
Easy to use and program
The control comes with four factory-configured operating programs you can easily adjust for your
situation. The easy-to-use keypad and menu system make the TVS one of the easiest controls to
program. The TVS's advanced and powerful features are never more than a few keystrokes away.
Versatility and peace of mind
The TVS 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.
The TVS displays alert conditions such as high and low temperatures, power failure, and low line
voltage, and can also connect to an alarm siren, alarm panel, or auto-dialer. 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 TVS often controls ventilation in a single 20 x 40-foot or smaller room.
Greenhouse applications
Greenhouse applications include controlling ceiling louvers, variable and single-speed fans, and
heaters.

Chapter 1: Introducing the TVS Phason
8
Business and light-industrial applications
Business and light-industrial applications include machine shops, garages, and utility sheds where
customers use the TVS to control fans and heaters. The TVS 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: -13.0 to 125 °F (-25 to 51.7°C)
Seven configurable operating programs
Two variable cooling stages for controlling fans
One general-purpose relay (heat or cool)
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
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
Two-year limited warranty

TVS user manual Becoming familiar with the TVS
9
Becoming familiar with the TVS
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. This
means you can adjust the parameter.
If you leave the TVS 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 TVS Phason
10
Menu layout

11
Chapter 2: Installing your TVS
Chapter 2 explains how to mount, install, and connect equipment to your TVS.
Topics in chapter 2 include:
What you need to know before installing your TVS below
Connecting equipment to your TVS on page 15
Finishing the installation on page 20
What you need to know before installing your TVS
Before installing your TVS, 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 TVS, which may cause your TVS 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 52, list all the equipment you want to control
using this TVS. Install the equipment and make your electrical connections according to the
sheet.
3. Using Appendix E: Configuration worksheets on page 53, 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 and horsepower draw does not exceed the relay or stage’s limit. For more
information, read Electrical ratings on page 13.
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 TVS Phason
12
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 TVS. 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.
Install a filter in parallel with the load, as shown in the following example.

TVS user manual What you need to know before installing your TVS
13
Do not use Snubber filters with variable stages.
Some power contactors include snubber filters. For more information, read
Using power contactors to increase the capacity of relays below.
For more information about snubber filters or other Phason accessories, see
your dealer or visit www.phason.ca.
Electrical ratings
Input power
120/230 VAC, 50/60 Hz
Variable stages 
(STAGE 1, STAGE 2)
Fuses (F2 and F3)
5 FLA at 120/230 VAC, PSC motor
1/3 HP at 120 VAC, 1/2 HP at 230 VAC, PSC motor
7.5 A at 120/230 VAC, general-purpose (resistive)
12 A, 250 VAC ABC-type ceramic
Relay stage 
(STAGE 3)
Fuse (F1)
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
12 A, 250 VAC ABC-type ceramic
Alarm relay
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
You can connect more than one piece of equipment to a variable stage or relay as long as they are the same type (for
example, two fans) and the total current and horsepower draw does not exceed the stage’s limit.
The FLA (full load ampere) rating accounts for the increase in motor current draw
when the motor operates at less than full speed. Make sure the motor/equipment
connected to the variable stage does not draw more than 7 FLA.
Using power contactors to increase the capacity of relays
Phason’s 240-volt power contactors are heavy-duty relays that allow you to increase the load
handling capability of control relays. Power contactors are ideal for secondary ventilation fans and
electric heaters.
Phason’s power contactor relays have the following electrical ratings.
Coil: 10.2 mA at 240 VAC
Contact: 25 A at 240 VAC; resistive
2 HP at 240 VAC, 1 HP at 120 VAC; motor, power factor 0.4
1300 W at 120 VAC; tungsten
Phason offers three power contactor options. For more information, read Replacement kits and
optional accessories on page 44

Chapter 2: Installing your TVS Phason
14
TVS layout
Voltage selection switch: set this switch to the correct voltage before installing your TVS.
Incoming power terminal: connect the incoming power (120/230 VAC, 50/60 Hz) to this terminal.
Temperature probe terminal: connect the temperature probe to this terminal.
Alarm relay terminal: connect an external alarm system or alarm siren to this terminal.
General-purpose relay terminal (STAGE 3): connect single stage (on/off) equipment to this terminal. You can
configure this relay as heat or cool.
Variable stage terminals (VAR 1, VAR 2): connect variable speed fans to these terminals.
Variable stage fuses (F3 for VAR 2, F2 for VAR 1): 12 A, 250 VAC ABC-type ceramic.
Relay fuse (F1): 12 A, 250 VAC ABC-type ceramic.
Display cable: make sure the ribbon cable from the display is properly connected to the socket.
1
2
3
4
5
6
7
8
9
9
1
2
3
4
5
6
7
8

TVS user manual Connecting equipment to your TVS
15
Mounting your TVS
1. Select a location for your TVS. Make sure you have enough cable
and wire to reach all the equipment (fans, heaters, and so on) that
you want to control.
2. Remove the screws from the front cover and then gently lift it off.
3. Mount the enclosure to a wall using the four screws provided with
the control. Insert the screws into the large holes in each corner
of the box and tighten.
Connecting equipment to your TVS
Follow all instructions when installing your TVS and connecting equipment to it.
Use the electrical knockouts for bringing wires or cables into or out of your
control’s enclosure. Do not make additional holes in the enclosure; this can
damage the watertight seal or control components and void the warranty.
Your control’s test modes are useful for testing your equipment after installing
and configuring it. For more information, read Testing settings and equipment on
page 37.
Refer to Appendix D: Installation worksheet on page 52 and Appendix E:
Configuration worksheets on page 53 when installing equipment.
Connecting the power source
Before connecting the incoming power, switch OFF the power at the source.
Do not switch ON the power until you have finished all wiring and verified all
equipment is properly connected and free of obstructions.
Before connecting the power, set the voltage selection switch to the correct
voltage.
If you are using three-phase power, make sure the control power and the variable
speed fans are connected to the same phase. For more information, read Using
three-phase power on page 18.

Chapter 2: Installing your TVS Phason
16
You can connect your TVS to 120 or 230 VAC, 50 or 60 Hz
power.
To connect the incoming power source
1. Set the voltage select switch to the correct voltage setting.
2. Connect the incoming power source as shown in the diagram.
Connecting temperature probes
Replace damaged probes as soon as possible. If there is no probe present or
working properly, the TVS shuts off stage 3 and operates variable stages 1 and
2 at idle speed.
When routing the temperature probe cables, do not run them in or along the
same conduit as AC-power lines. For more information, read the Control
Fundamentals guide that came with your control.
You can extend probe cables up to 500 feet. For more information, read the
Control Fundamentals guide that came with your control.
To connect a single temperature probe
Do not run the probe cable in the same conduit as AC power
cables
Do not run the sensor cable beside AC power cables or near
electrical equipment.
When crossing other cables or power lines, cross them at a
90-degree angle.
To use four-zone averaging
The TVS can monitor the temperature in four different zones using four-zone averaging. The
control takes an average of the temperatures measured by the four probes and then operates
according to the average temperature.
You must use four probes for averaging. Using two, three, or more than four probes
measures the temperature incorrectly.

TVS user manual Connecting equipment to your TVS
17
Connecting variable-stage cooling
elements
The TVS has two variable-stage cooling terminals for connecting
equipment such as variable-speed fans.
To connect variable-stage cooling elements
Connect variable cooling elements to your TVS as shown in the
following diagram.
Only permanent split capacitor motors appropriate for variable speed control, or
shaded pole motors, can be used on the variable stages.
If you are using three-phase power, connect the TVS and the variable cooling
equipment to the same phase. For more information, read Using three-phase
power on page 18.
The ratings of the equipment must not exceed the ratings of your TVS's variable
stages.
Variable stage ratings: 5 FLA at 120/230 VAC, PSC motor
1/3 HP at 120 VAC, 1/2 HP at 230 VAC, PSC motor
7.5 A at 120/230 VAC, general-purpose (resistive)
Variable stage fuses: 12 A, 250 VAC ABC-type ceramic

Chapter 2: Installing your TVS Phason
18
Using three-phase power
If you are connecting your TVS to a three-phase system, connect the control power and the variable
cooling equipment to the same phase.
Your TVS must be powered from the same phases that supply the equipment. If your TVS power
and the variable stages are wired to different phases, the equipment will operate erratically.
Connect the control power and variable cooling equipment as shown in the following example.
Correct three-phase wiring Incorrect three-phase wiring
Connecting single-stage heating or cooling elements
Heating or cooling elements include equipment such as electric heaters, furnaces, and single-speed
fans.
The ratings of the equipment must not exceed the ratings of your TVS's relays.
Relay ratings: 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
Gas furnaces using hot-surface ignition or glow plugs can draw more current than
indicated on their nameplate and require power contactors. For more information,
read your furnace dealer.

TVS user manual Connecting equipment to your TVS
19
To connect single-stage heating or cooling elements
Connect single-speed heating or cooling elements to your TVS as shown in the following diagrams.
Gas-fired furnace or brooder All other single-speed elements
Connecting an alarm system
You can connect an alarm system to your TVS's alarm terminal. An alarm system can be a siren,
alarm panel, or auto-dialer. Read your system’s installation guide for installation instructions and
information about the type of system: normally open or normally closed . Below are the descriptions
for the alarm terminal.
COM: common connection
N/O: normally open; closes during alarm conditions
N/C: normally closed; opens during alarm conditions
For the alarm system to sound (or dial out) during an alarm condition, you must enable the alarms.
For more information, read Programming alarm settings on page 32.
The ratings of the alarm system must not exceed the ratings of the relay.
Alarm relay ratings: 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

Chapter 2: Installing your TVS Phason
20
To connect an alarm system
If you are connecting the alarm system to a network of controls and your system uses a
normally open connection (closes on alarm), connect the system as shown in the normally open
diagram.
Join all the COM connections together and all the N/O connections together. Your TVS alarm
relays must be in parallel with each other so any TVS can trigger the alarm system when an alarm
condition occurs.
If you are connecting the alarm system to a network of controls and your system uses a
normally closed connection (opens on alarm), connect the system as shown in the normally
closed diagram.
Join the alarm relays in a continuous loop. Your TVS alarm relays must be in series with each
other so any TVS can trigger the alarm system when an alarm condition occurs.
Normally open system (closed on alarm) Normally closed system (open on alarm)
Finishing the installation
After installing and connecting equipment to your TVS, you are ready to finish the installation.
Before you start configuring your TVS, you need to verify the connections and close the TVS.
Make sure the configuration worksheets in Appendix E correspond to how the equipment is
connected to your TVS. It is very important that the connections and the worksheets are the same,
because the next step after closing the cover is to tell your TVS which equipment is connected to
each terminal.