t855 thermostat manual

Pro1 IAQ T855 Thermostat Manual

The Pro1 IAQ T855 thermostat manual is your comprehensive
guide to understanding and operating your new thermostat. This
manual provides instructions for installation, programming,
troubleshooting, and more.

Congratulations on purchasing the Pro1 IAQ T855 thermostat, designed
for ease of use and reliable performance in controlling your home’s
heating and cooling systems. This thermostat is versatile,
compatible with both conventional and heat pump systems, offering
programmable options to suit your lifestyle.

This manual provides a comprehensive guide to understanding and
utilizing all the features of your T855 thermostat. From basic
operation, such as setting the temperature and fan control, to
advanced programming for customized comfort, this manual covers it all.

Whether you’re a new user or upgrading from an older model, you’ll
find helpful information to maximize energy efficiency and maintain a
comfortable indoor environment.

The Pro1 IAQ T855 boasts a user-friendly interface with an intuitive
menu-driven programming system and a clear LCD display. With its
ability to be powered by either battery or a 24V connection, it
provides flexibility in installation. Additionally, its compatibility
with various HVAC systems makes it a suitable choice for a wide range
of homes.

T855 Thermostat Quick Reference

This section offers a quick guide to the essential functions of your
Pro1 IAQ T855 thermostat, designed for users who need immediate
assistance with basic operations. The T855 features an intuitive
interface that simplifies temperature adjustments and system settings,
making it user-friendly for everyone.

The primary functions include temperature setting, accessible through
clearly marked up and down buttons, and system mode selection, allowing
you to switch between heating, cooling, and auto modes. Fan control is
also readily available, offering options for automatic or continuous
operation. The menu button provides access to more advanced settings,
such as programming schedules and configuring system parameters.

For convenience, the T855 thermostat displays the current temperature,
setpoint, and system status on its LCD screen. The backlight feature
ensures visibility in low-light conditions. Remember to consult the
full manual for detailed instructions on programming and troubleshooting
to optimize your thermostat’s performance. This quick reference serves
as a handy tool for everyday use.

Understanding the LCD Display

The LCD display on your Pro1 IAQ T855 thermostat is designed to
provide you with all the essential information you need at a glance.
Becoming familiar with the various icons and readouts will greatly
enhance your ability to control your home’s climate effectively. The
display typically shows the current room temperature prominently,
allowing you to quickly assess your environment.

In addition to temperature, the LCD also indicates the setpoint
temperature, which is your desired temperature setting. Icons display
the current system mode, whether it’s in heating, cooling, or auto
mode. You’ll also see indicators for fan operation, showing if the fan
is set to run continuously or automatically. Furthermore, the display
alerts you to important information such as low battery warnings, which
are crucial for maintaining uninterrupted operation.

For programmed thermostats, the LCD will show the current time period
(e.g., Wake, Leave, Return, Sleep) and day of the week, helping you
keep track of your schedule. Understanding these display elements will
make using your T855 thermostat straightforward and efficient.

Setting the Temperature

Adjusting the temperature on your Pro1 IAQ T855 thermostat is a simple
process that allows you to customize your comfort level. To begin,
locate the temperature setpoint buttons on the thermostat’s interface;
they are usually marked with up and down arrows. Pressing the up arrow
will increase the desired temperature, while pressing the down arrow
will decrease it.

As you adjust the temperature, the new setpoint will be displayed on
the LCD screen. The thermostat will then work to maintain this
temperature in your home. Keep in mind that the system mode (heat or
cool) must be properly selected for the temperature adjustment to take
effect. If the thermostat is in “Auto” mode, it will automatically
switch between heating and cooling to maintain your set temperature.

For temporary adjustments, you can use the “Hold” feature, which allows
you to override the programmed schedule and maintain a constant
temperature until you choose to release the hold. This is useful for
periods when your schedule changes unexpectedly. Always ensure that your
thermostat is correctly configured for your heating and cooling system
to achieve optimal performance.

Programming the Thermostat

The Pro1 IAQ T855 thermostat offers flexible programming options to
suit your lifestyle and maximize energy savings. It supports 7-day or
5-1-1 programming, allowing you to create different schedules for
weekdays, Saturdays, and Sundays. To begin programming, press the “Menu”
button and navigate to the “Program” option.

You’ll then be able to set different time periods for each day, such as
“Wake,” “Leave,” “Return,” and “Sleep.” For each period, you can specify
the desired temperature. The intuitive menu-driven programming makes it
easy to customize your schedule. The thermostat also features an “Auto
Changeover” function, which automatically switches between heating and
cooling modes based on your programmed settings.

Take advantage of the “Temporary Hold” feature to override the
programmed schedule when needed. This is useful for unexpected changes
in your routine. Remember to save your settings after making
adjustments. Regularly review and adjust your program to ensure it
aligns with your current needs and preferences. Properly programming
your thermostat can significantly reduce energy consumption and maintain
a comfortable environment.

Heat Pump Configuration

The Pro1 IAQ T855 thermostat is designed to work with both conventional
heating and cooling systems and heat pump systems. Configuring the
thermostat for heat pump operation is essential for proper functionality.
Before you begin, ensure that your system is compatible with the T855
thermostat. Refer to your HVAC system’s documentation for compatibility
information.

To configure for a heat pump, access the “Installer Setup” menu. This
typically involves holding down a specific button combination. Consult
the manual for the exact procedure to enter the setup menu. Within the
setup menu, locate the “System Type” or “Heat Pump” option. Select the
appropriate setting that corresponds to your heat pump system.

Pay close attention to the wiring diagrams provided in the manual to
ensure correct connections; Incorrect wiring can damage your thermostat
or HVAC system. Verify that the reversing valve is configured correctly.
The reversing valve determines whether the heat pump heats or cools in
“Heat” mode. Once you’ve made the necessary configuration changes, save
the settings and exit the setup menu. Test the system to ensure it is
operating correctly in both heating and cooling modes.

Battery Information and Replacement

The Pro1 IAQ T855 thermostat typically operates on two AA batteries.
These batteries provide power to the thermostat for its display,
programming, and control functions. When the batteries are running low,
a low battery indicator will appear on the thermostat’s LCD screen. This
indicator serves as a warning that the batteries need to be replaced
soon to avoid any interruption in thermostat operation.

It is recommended to replace the batteries as soon as the low battery
indicator appears. To replace the batteries, first, locate the battery
compartment on the thermostat. This is usually on the front or side of
the unit. Open the battery compartment and remove the old batteries.
Insert two new AA batteries, ensuring that they are placed in the
correct polarity as indicated in the battery compartment.

Once the new batteries are installed, close the battery compartment. The
low battery indicator should disappear from the LCD screen. It is
advisable to use high-quality batteries for optimal performance and
longevity. If the thermostat will not be used for an extended period, it
is recommended to remove the batteries to prevent any potential battery
leakage and damage to the thermostat.

Troubleshooting Common Issues

The Pro1 IAQ T855 thermostat is designed for reliable operation, but
occasional issues may arise. If the thermostat display is blank, first
ensure that the batteries are properly installed and have sufficient
charge. If the display remains blank after replacing the batteries, check
the wiring connections to the thermostat base. Ensure all wires are
secure and properly connected according to the wiring diagram in the
installation manual.

If the thermostat is not controlling the heating or cooling system
correctly, verify that the system switch is set to the correct mode
(Heat, Cool, or Auto). Also, check the setpoint temperature to ensure it
is within the desired range. If the thermostat is cycling the system on
and off too frequently, adjust the cycle rate setting to a longer cycle
time.

For heat pump systems, ensure the heat pump configuration is properly
set according to the instructions in the manual. If the thermostat
displays an error code, refer to the troubleshooting section of the
manual to identify the cause and possible solutions. If you are unable
to resolve the issue, contact a qualified HVAC technician for assistance.

Warranty Information

Your new Pro1 IAQ T855 thermostat comes with a limited warranty from
Pro1 IAQ, Inc. This warranty covers defects in materials and
workmanship under normal use and service for a period of five years from
the date of original purchase. During the warranty period, Pro1 IAQ will,
at its option, repair or replace the defective thermostat with a new or
refurbished unit, provided that the original purchaser returns the
thermostat to Pro1 IAQ or an authorized service center.

This warranty does not cover damage caused by misuse, abuse, accident,
alteration, improper installation, or acts of God. The warranty is void
if the thermostat has been tampered with or repaired by unauthorized
personnel. To make a warranty claim, the original purchaser must provide
proof of purchase and a detailed description of the defect.

Pro1 IAQ’s liability under this warranty is limited to the repair or
replacement of the thermostat. Pro1 IAQ shall not be liable for any
incidental or consequential damages, including but not limited to, loss
of use, loss of profits, or damage to other equipment. This warranty
gives you specific legal rights, and you may also have other rights
which vary from state to state.

Installation Guide

Before beginning the installation of your Pro1 IAQ T855 thermostat,
ensure that all power to the HVAC system is turned off at the breaker
box to prevent electrical shock. Remove the old thermostat from the wall
and disconnect the wires, labeling each wire with its corresponding
terminal designation (e.g., R, W, Y, G, C). If you are unsure about any
wiring configurations, consult a qualified HVAC technician.

Attach the universal sub-base to the wall using the provided screws,
ensuring it is level for accurate temperature readings. Connect the
wires from your HVAC system to the corresponding terminals on the
T855’s sub-base, matching the labels from your old thermostat. Double
check all wire connections to prevent short circuits or system
malfunctions.

Once the wiring is complete, carefully attach the T855 thermostat to the
sub-base. Install two new AA batteries into the thermostat, paying
attention to the polarity. Turn the power back on at the breaker box and
follow the thermostat’s on-screen instructions to configure the system
settings, including the system type (conventional or heat pump) and
any desired programming preferences.

Downloading Manuals and Support

For convenient access to the Pro1 IAQ T855 thermostat manual and
support resources, visit the Pro1 IAQ website. The site offers a
digital version of the operation manual in PDF format, which can be
easily downloaded and viewed on your computer, tablet, or smartphone.
This allows you to quickly reference specific instructions or
troubleshooting steps whenever needed.

In addition to the manual, the Pro1 IAQ website provides a range of
support materials, including FAQs, troubleshooting guides, and video
tutorials. These resources can help you resolve common issues and
optimize the performance of your T855 thermostat. If you require
further assistance, you can contact Pro1 IAQ’s customer support team
via phone or email.

The website also provides access to other relevant documents, such as
installation manuals and submittal sheets. This ensures that you have
all the necessary information to properly install and maintain your
thermostat. You may also find a Spanish version of the manual
available for download on the company website.