T755WHO PROsync Digital Programmable Thermostat Instruction Manual

T755WHO PROsync Digital Programmable Thermostat

Product Information

• Product Name: T755WHO Thermostat
• Manufacturer: Pro1 Technologies
• Model Number: PM-T755WHO-IM-2321
• Power Type: Battery Power or Hardwired (Common Wire)
• Compatible Systems: Gas or Oil Heat, Electric Furnace, Heat Pump (with or without Aux. or Emergency Heat), Multi-Stage Systems, Heat Only Systems, Cool Only Systems, Millivolt, Dual Fuel
• Additional Features: Battery Backup, Humidity Control

Product Usage Instructions

Installation

Location:

• The thermostat should be installed approximately 4 to 5 feet above the floor.
• Select an area with average temperature and good air circulation.
• Avoid installing the thermostat in basements, attics, living space closets, or locations with electrical hazards.

Installation Process:

• Ensure that a trained and experienced technician installs the thermostat.
• Follow the installation tips provided in the user manual.
• Disconnect the power before beginning the installation to prevent electrical shock or equipment damage.
• The PROsync Wireless System has been tested in various building constructions and can cover spaces over 5500 square feet.
• The wireless range works well across multiple floors and can transmit data reliably across hundreds of feet indoors and over 1000 feet line of sight.
• The PROsync radios constantly search for open channels to avoid interference and ensure messages are received.

Thermostat Subbase Installation:

• For horizontal mount, use one screw on the left and one screw on the right.
• For vertical mount, use one screw on the top and one screw on the bottom.

Operation

• Familiarize yourself with the thermostat’s buttons and display. Use the buttons to set the time, temperature, humidity, and programming.
• The thermostat offers various modes and settings for different needs (e.g., Wake, Leave, Sleep, AutoCool, AutoIAQ).
• Refer to the quick reference guide for a basic understanding of the thermostat’s functions.

Additional Information:
The thermostat is mercury-free, but if you are replacing a mercury-containing product, dispose of it properly according to your local waste management authority’s instructions. Please refer to the complete user manual for detailed instructions on programming, setting up wireless communication, technician setup menu, and other specifications.

Thermostat Application Guide

Description|
---|---
Gas or Oil Heat| Yes
Electric Furnace| Yes
Heat Pump (No Aux. or Emergency Heat)| Yes
Heat Pump (With Aux. or Emergency Heat)| Yes
Multi-Stage Systems| Yes
Heat Only Systems| Yes
Cool Only Systems| Yes
Millivolt| No
Humidity| Yes
Dual Fuel| Yes

U.S. Registered Trademark. Patents pending Copyright 2023 All Rights Reserved.

Power Type

• Battery Power*
• Hardwire (Common Wire)
• Hardwire (Common Wire) with
• Battery Backup

A trained, experienced technician must install this product.
Carefully read these instructions. You could damage this product or cause a hazardous condition if you fail to follow these instructions.

Installation Tips

Wall Locations
The thermostat should be installed approximately 4 to 5 feet above the floor. Select an area with average temperature and good air circulation .

Do not install thermostat in these locations:

• Close to hot or cold air ducts
• That are in direct sunlight
• With an outside wall behind the thermostat
• In areas that do not require conditioning
• Where there are dead spots or drafts (in corners or behind doors)
• Where there might be concealed chimneys or pipes

Installation Tip: Pick an installation location that is easy for the user to access. The temperature of the location should be representative of the building.

Wireless Range
The PROsync System has been tested in many different types of building construction including wood, steel beam, and brick in spaces over 5500 square feet. The wireless range performs well across multiple floors successfully. The PROsync radios constantly search for open channels to avoid interference and ensure messages are received. The PROsync system has been shown to reliably transmit data across hundreds of feet indoors and over 1000 feet line of sight.

Equipment Module -Attic Location
When performing an attic installation, instead of placing the equipment module in the attic, locate the closet nearest to the air conditioning unit. We reccomend mounting the Equipment module high on the wall inside the closet or on the ceiling of the closet. This location will insure the equipment module is below the 150°F maximum ambient temperature specification while also allowing easy technician viewing.

Equipment Module – Basement Location

Do not install the base module in locations:

• That are behind a chimney
• Where temperature could exceed 150°F
• Where rain or snow or extreme hot or cold is possible
  Note: This base module is NOT weatherproof.

Thermostat Subbase Installation

1. Horizontal Mount
   For horizontal mount put one screw on the left and one screw on the right.

2. Vertical Mount
   For vertical mount put one screw on the top and one screw on the bottom.

Installation Tip: Electrical Hazard
Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage.

Mercury Notice All of our products are mercury free. However, if the product you are replacing contains mercury, dispose of it properly. Your local waste management authority can give you instructions on recycling and proper disposal.

Equipment Module Subbase Installation

For the equipment module mount 4 screws in each outer hole.

Wiring Note Wire the equipment module’s subbase the same way you would wire a hardwired thermostat subase.

Note: To connect the equipment module to the master thermostat, refer to the directions on page 11 of this manual.

Note: The base module must be hardwired (C and R terminals connected to 24V power.)

Getting to know your thermostat

1. Time and day of the week

2. Setpoint: Displays the selected setpoint temperature.

3. Menu Options: Shows different options.

4. System Operation Indicators:
   The COOL ON, HEAT ON, or FAN ON will display when the COOL, HEAT, or FAN is on. The compressor delay feature is active if these are flashing.

5. Keypad Lockout: Indicates keypad lockout state is “Locked”.

6. Hold is displayed when the thermostat program is permanently overridden.

7. Radio Antenna: This icon blinks when the thermostat receives a message from the equipment module.

8. Indicates the current room temperature

9. Low Battery Indicator: Replace batteries when this indicator is shown.

10. Stages: 1 will appear in the display when the first stage of heat or cool is on, +2 will appear for the second stage, +3 for third stage and +4 for fourth stage.

11. Globe: Globe is displayed if an energy efficient temperature has been selected.

12. Fan Mode: Indicates current air handler fan mode of operation.

13. Program Time Periods: This thermostat has 4 programmable time periods per day.

14. System: Indicates current mode of operation.

Important The low battery indicator is displayed when the AA battery power is low. Replace the batteries when the indicator appears. If the system is in the low battery state for an extended period, the system will operate with reduced temperature control. If battery power is lost, the system will cease operation even if the equipment module is still connected.

Wireless Communication Setup

Follow these steps to setup the PROsync Wireless System

1. Choose the equipment module location.
2. Remove the front cover and attach the equipment module to the wall.
3. Wire the equipment module to the air handler.
4. Snap the cover back on. The C terminal light should be illuminated indicating the equipment module is powered.
5. Install batteries in the main thermostat and ensure it is communicating with the equipment module. Any changes to the main thermostat that create a call will now be displayed at the equipment module in the LEDs associated with the terminals.
6. Choose the install location for the T755WHO. In the tech settings, check the “Signal Strength” tech setting and ensure the value is greater than zero.
7. Remove the subbase and attach it to the wall using screws and anchors in the box.
8. If you want to hardwire the thermostat, connect the R and C wires.
9. Snap the thermostat onto the subbase. Make sure the connection is secure and the display is illuminated.
10. Add any additional remote sensors as desired.

Note Each time a message goes back and forth between the remote thermostat and the equipment module, the light on the equipment module will blink blue twice, and the antenna icon on the remote will blink twice.

Private Label Badge

About The Badge
All of our thermostats use the same universal magnetic badge. Visit the company website to learn more about our free private label program.

Gently slide a screwdriver into the bottom edge of the badge. Gently turn the screwdriver counter clockwise. The badge is held on by a magnet in the well of the battery door. The badge should pry off easily.
DO NOT USE FORCE.

Getting to know your thermostat

1. Glow in the dark light button
2. LCD Display
3. User Buttons
4. Temperature Setpoint Buttons
5. Fan Button
6. Occupancy Sensor
7. System Button
8. Private Label Badge

Adding A Remote Sensor

Establishing communication between a remote sensor and the equipment module
The main thermostat and equipment module in this package are linked at our factory. Upon power up, they will automatically begin to communicate. If you wish to add additional remote sensors, follow the instructions on this page.

How To Pair

1. Press the PAIR button on the equipment module. The equipment module will begin double blinking pink for 2 minutes while it listens for a new remote.
2. Press and hold the light button on the unpaired remote sensor to be added. The remote sensor will show “PAIRING” on the main screen.
3. When the remote sensor is successfully paired to the equipment module, the LCD will display “PAIRED” and the equipment module Pair button LED will blink green.
4. Repeat the process for additional remote sensors.

Network Troubleshooting
For any of the conditions listed below, please visit our website for troubleshooting instructions at www.pro1iaq.com/prosync
If your remote shows “NO COMM TO BASE” in the text field, this indicates the remote thermostat cannot communicate with the equipment module.

Equipment Module Troubleshooting

or connected. Equipment module will not energize the heating and cooling system.
Green| Single Blink| All remote thermostats are connected to the equipment module, .network is healthy.
Yellow| Double Blink| One or more remote thermostats are disconnected from the equipment module.
Red| Triple Blink| All remote thermostats are disconnected. Equipment module will not energize the heating and cooling system.

Wiring For The Equipment Module

Caution: Electrical Hazard
Failure to disconnect the power before beginning to install this product can cause electrical shock or equipment damage.

Warning:
All components of the control system and the thermostat installation must conform to Class II circuits per the NEC Code.

Wiring

1. If you are replacing a thermostat, make note of the terminal connections on the thermostat that is being replaced. In some cases the wiring connections will not be color coded. For example, the green wire may not be connected to the G terminal.
2. Loosen the terminal block screws. Insert wires then retighten the terminal block screws.
3. Place non flammable insulation into the wall opening to prevent drafts.

Installation Tip
Do not overtighten terminal block screws, as this can damage the terminal block. A damaged terminal block can keep the thermostat from fitting on the subbase correctly or cause system operation issues. Max Torque = 6in-lbs.

Wiring Tips

C Terminal
The C (common wire) terminal does not have to be connected when the thermostat is powered by batteries.

Wire Specifications
Use shielded or non-shielded 18-22 gauge thermostat wire.

Note: In many heat pump systems with no emergency heat relay, a jumper can be installed between W1 and W2 to turn thermostat into a single stage control for Emergency Heat Operation.

Wiring

Terminal Designations on the Equipment Module
This thermostat is shipped from the factory to operate a conventional heating and cooling system. This thermostat may also be configured for a heat pump system. See the “heat pump” configuration step on page 16 of this manual to configure the thermostat for heat pump applications.

Terminal

| 2 Heat 2 Cool Conventional System| 2 Heat 2 Cool Heat Pump System| 4 Heat 2 Cool Heat Pump System
---|---|---|---
RC| Transformer power (cooling)| Transformer power (cooling)| Transformer power (cooling)
RH| Transformer power (heating)| Transformer power (heating)| Transformer power (heating)
C| Transformer common| Transformer common| Transformer common
B| Energized in heating| Heat pump changeover valve energized in heating| Heat pump changeover valve energized in heating
O| Energized in cooling| Heat pump changeover valve energized in cooling| Heat pump changeover valve energized in cooling
G| Fan relay| Fan relay| Fan relay
W1| First stage of heat| First stage of emergency heat| First stage of emergency heat, third stage of heat
Y| First stage of cool| First stage of heat & cool| First stage of heat & cool
Y2| Second stage of cool| Second stage of cool| Second stage of cool & second stage of heat
W2| Second stage of heat| Auxiliary heat relay, second stage of heat| Auxiliary heat relay, fourth stage of emergency heat
H| Humidify| Humidify| Humidify
D| Dehumidify| Dehumidify| Dehumidify

Terminal Designations on the Master Thermostat

Terminal

| 2 Heat 2 Cool Conventional System| 2 Heat 2 Cool Heat Pump System| 4 Heat 2 Cool Heat Pump System
---|---|---|---
R| 24 VAC transformer power| 24 VAC

transformer power

| 24 VAC

transformer power

C| transformer common| transformer common| transformer common

1. Power supply
2. Factory – installed jumper. Remove only when installing on a 2 transformer systems.
3. Use either O or B terminals for changeover valve.
4. Optional 24 VAC common connection when thermostat is used in battery power mode.

Benefits To Using The PROsync Wireless System
When using remote sensing, this system can be configured four separate ways to maximize comfort for homeowner and cater to each of their unique lifestyles.

System Averaging
System Averaging will average all remotes together to provide a more accurate temperature of the entire home. Adjusting the temperature from any remote will temporarily put that room in control of the system. If the upstairs thermostat reads 80 while the basement reads 70 the system will condition the home to a 75 ambient.

Scheduling
With scheduling the system you can make different rooms in control for each part of the day. For homeowners with predictable schedules, this ensures each room will be the target temperature when scheduled to be used. Making the kitchen in control in the morning, your home office during the day, your living room in the evening, and your master bedroom at night is a great hands- free approach to maximize comfort. To turn Scheduling on or off, see the instructions for the “Program Mode” tech setting in this manual on page 22.

Occupancy Sensing (Last Seen Mode)
This is the perfect solution for homes with a single occupant with less predictable schedules, using the built-in occupancy sensors moves the comfort around the home without the need for scheduling. As soon as someone enters a room, it takes control of the system. To turn Last Seen Occupancy Sensing on, see the instructions for “Occupancy Mode” tech setting in this manual on page 31.

Occupancy Sensing (System Average Mode)
This is an excellent solution for a home with multiple occupants. Each time a remote senses occupancy, it starts an automatic, internal timer. The system is controlled using the average of the temperatures from only the remotes with active timers. When a remote’s timer expires, the system removes that remote from the average. To turn System Average Occupancy Sensing on, see the instructions for “Occupancy Mode” tech setting in this manual on page 31.

Note: This thermostat is hardwire powered when the 24V transformer

is connected to the R and C terminals of the thermostat.
Note: In many systems with no emergency heat relay a jumper can be used between W1 and W2.

Technician Setup

This thermostat has a technician setup menu for easy installer configuration. To set up the thermostat for your particular application:

1. Press the MENU button.

2. Press and hold the technician setup button for 3 seconds. This 3 second delay is designed so that homeowners do not accidentally access the installer settings.

3. Configure the installer options as desired using the table below.
   Use the keys to change settings and the NEXT step or PREVIOUS step key to move from one step to another. Note: Only press the DONE key when you want to exit the Technician Setup options.

4. Press the DONE key to exit.

A Note About Auto Changeover:
In Auto you have the ability to switch between Auto Heat or Auto Cool by pressing the system key. This can be done once the current mode has reached its setpoint. For example: if in Auto Heat, the heat setpoint must be satisfied before the thermostat will allow you to switch to Auto Cool. You can switch out of Auto by holding down the SYSTEM key. To get back into Auto, you must toggle the system key to Auto.

HUM Terminal

for humidity.
4| Below the humidity setpoint.

DHM Terminal

for dehumidity.
3| Above the humidity setpoint.
4| Above the humidity setpoint and the compressor is not running.

Note: When the dehumidify terminal is configured as normally-closed, the base module D terminal LED indicator will be lit when the relay is closed. When the thermostat calls for dehumidification, the D terminal LED indicator will turn off.

Force Unoccupied Setting
To set your system to the unoccupied temperature immediately, press and hold the Light and Minus buttons on any indoor sensor or the main thermostat. Your thermostat or sensor should say “Unoccupied”. The system will ignore occupancy changes for 5 minutes to allow you time to leave.

Setting The Humidity

Follow the steps below to change your target humidity setpoint.
Press the humidity button. Use the button to select the target humidity setpoint. Press Done when completed.
Note:
Humidity is only energized during heat. Dehumidity is only energized during cool. HUMIDITY and DEHUMIDITY each have their own target setpoints.

Ambient Humidity Display
Ambient humidity will flash opposite the day and time, if the optional outdoor temperature sensor is installed the ambient outdoor temperature will also cycle in the display.

Increasing Humidity
The table on the right shows recommended indoor humidity levels in relation to outdoor temperatures during heating (adding humidity).
Consult your professional HVAC technician for recommended settings for your climate.

Programming

Set Time (If using programming)
Follow the steps below to set the day of the week and current time:

1. Press the Menu button.
2. Press Set Time.
3. Day of the week is flashing. Use the key to select the current day of the week.
4. Press Next.
5. The current hour is flashing. Use the key to select the current hour. When using 12-hour time, make sure the correct a.m. or p.m. choice is selected.
6. Press Next.
7. Minutes are now flashing. Use the key to select current minutes.
8. Press Done when completed.

All our programmable thermostats are shipped with an energy saving default program. You can customize this default program by following the instructions in the set program schedule section starting on page 38.
Your thermostat can be programmed to have each day of the week programmed uniquely (7 days), all the weekdays the same with a separate program for Saturday and a separate program for Sunday (5+1+1), or non-programmable.

A Note About Programmable Fan:
The programmable fan feature will run the fan continuously during any time period it is programmed to be on. This is the best way to keep the air circulated and to eliminate hot and cold spots in your building.

Default Programming

Factory Default Program

Day of the Week| Events| Time| Setpoint Temperature (HEAT)| Setpoint Temperature (COOL)
---|---|---|---|---

Weekday

| Wake| 6 AM| 70˚F (21˚C)| 78˚F (26˚C)
Leave| 8 AM| 62˚F (17˚C)| 85˚F (29˚C)
Return| 6 PM| 70˚F (21˚C)| 78˚F (26˚C)
Sleep| 10 PM| 62˚F (17˚C)| 82˚F (28˚C)

Saturday

| Wake| 6 AM| 70˚F (21˚C)| 78˚F (26˚C)
Leave| 8 AM| 62˚F (17˚C)| 85˚F (29˚C)
Return| 6 PM| 70˚F (21˚C)| 78˚F (26˚C)
Sleep| 10 PM| 62˚F (17˚C)| 82˚F (28˚C)

Sunday

| Wake| 6 AM| 70˚F (21˚C)| 78˚F (26˚C)
Leave| 8 AM| 62˚F (17˚C)| 85˚F (29˚C)
Return| 6 PM| 70˚F (21˚C)| 78˚F (26˚C)
Sleep| 10 PM| 62˚F (17˚C)| 82˚F (28˚C)

Set Program Schedule For Four Time Periods

Saturday:
Repeat steps 4 through 6 for the Saturday WAKE time period, LEAVE time period, RETURN time period, and for the Saturday SLEEP time period.

Sunday:
Repeat steps 4 through 6 for the Sunday WAKE time period, LEAVE time period, RETURN time period, and for the Sunday SLEEP time period.

Temporary & Permanent Hold Feature

Temporary Hold:
The thermostat will display HOLD and Run Schedule on the bottom of the screen when you press the or key. If you do nothing, the temperature will remain at this setpoint temporarily for 4 hours. The program setpoint will then replace the temporary setpoint.
Permanent Hold: With a temporary hold set, If you press the HOLD key at the bottom of your screen, you will see HOLD appear next to the setpoint temperature in the display. The thermostat will now permanently stay at this setpoint and can be adjusted using the  keys.

To Return To Program
Press the Run Schedule key at the bottom of the screen to exit temporary and permanent holds.

Filter Change Reminder
If your installing contractor has configured the thermostat to remind you when the air filter needs changed, you will see CHANGE FILTER in the display when your air filter needs changed. The reminder will be shown in the display after your system has run long enough to require an air filter change.
To reset the timers for Prosync, user must hold the “Run Schedule” button (2nd button down on the left) on either the main screen, or the related timer tech settings.

Custom Programming (Fill out before starting the process)

Set Program Schedule For Four Time Periods (WAKE, LEAVE, RETURN, SLEEP)
If you intend to use additional Remote Sensors in addition to the Main Thermostat you must install, link and name all of the remotes in the system before you begin the scheduling process.

To customize your 5+1+1 Program schedule, follow these steps:

Weekday:

1. Select HEAT or COOL with the System Key.
   Note: You have to program heat and cool each separately.

2. Press the MENU button (If menu does not appear first, press RUN SCHED).

3. Press SET SCHEDULE. Note: Monday-Friday is displayed, and the WAKE icon is shown. You are now programming the WAKE time period for the weekday setting.

4. Time is flashing. Use the key to make your time selection for the weekday WAKE time period.
   Note: If you want the fan to run continuously during this time period, select ON with the FAN key. AUTO will cycle the fan when there is a call for heat or cool. IAQ will cycle the fan intermittently based on the IAQ tech settings.

5. Press Next.

6. The setpoint temperature is flashing. Use the key to make your setpoint selection for the weekday WAKE period.

7. At any point use the ZONE button to select the remote you want to be in control for that time period. If you want the system to average all remotes, select System Average.
   Note: This setting only applies if you are using multiple remote sensors.

8. Press Next.

9. Repeat steps 4 through 8 for the weekday LEAVE time period, for the weekday RETURN time period, and for the weekday SLEEP time period.

Specifications

• The display range of temperature … 41˚F to 95˚F (5˚C to 35˚C)
  The control range of temperature…. 44˚F to 90˚F (7˚C to 32˚C)

• Load Rating……………………………………….. 1 amp per terminal, 1.5 amp maximum all terminals combined

• Swing (cycle rate or differential) …… Heating is adjustable from 0.2˚ to 2.0˚ Cooling is adjustable from 0.2˚ to 2.0˚

• Power source …………………………………….18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire
  Battery power from 2 AA Alkaline batteries

• Operating ambient …………………………. 32˚F to +105˚F (0˚C to +41˚C)

• Operating humidity ………………………… 90% non-condensing maximum

• Dimensions of thermostat …………….. 4.7” W x 4.3” H x 1.1” D

• Frequency ………………………………………… 916 MHz

Base module

• Load rating ……………………………………….. 1 amp per terminal, 1.5 amp maximum all terminals combined
• Power source ……………………………………. 18 to 30 VAC, NEC class II, 50/60 Hz

Specifications

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate this equipment.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

FCC RF Exposure Statement
The device shall be used in such a manner that the potential for human contact normal operation is minimized. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body. This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter.

References

• Pro1 IAQ Thermostats - Non Programmable | Programmable | Wireless
• PRO1 Technologies | PROsync Wireless System

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