Toptech truecomfort iii Installation Manual

This manual covers the following models:

• T955W Master Thermostat

• Base Module

INSTALLATION MANUAL

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.

Need Help?

For assistance with this product please visit http://www.pro1iaq.com or call Pro1 Customer Care toll-free at 888-Pro1iaq (776-1427) during normal business hours (Mon-Fri 9 AM - 6 PM Eastern)

Table of Contents

Thermostat Applications Guide

Page

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

* If using remote sensors the thermostat

must be hardwired.

Power Type

Gas or Oil Heat

Electric Furnace

Heat Pump (No Aux. or Emergency Heat)

Heat Pump (with Aux. or Emergency Heat)

Multi-stage Systems

Heat Only Systems

Cool Only Systems

Dual Fuel Systems

Millivolt

Yes

Rev. 0950

Una versión española de este manual puede ser descargada en www.pro1iaq.com

Thermostat Quick Reference Installation Tips Subbase Installation Wiring Establishing Communication Technician Setup Menu Mounting & Battery Installation Programming The Thermostat Specifications & Contact Info

2 3-5 6-7

10-13

15-18

Description

This manual covers TopTech models:

TT-S-955W and T955W

Program Menu Options:

Shows different options during programming.

Wireless Icon

System Information:

Shows which zone or zones are controlling your system. Shown only when one or more indoor sensors R251W are connected.

Getting to know your thermostat

LCD

Fan Button

System Button

Temperature Setpoint Buttons

Menu Button

Temperature:

Indicates the current system temperature.

Days of the week and time. Flashes outside temperature when used with R250W.

OUTDOOR will show.

Glow in the Dark Light Button

Low Battery Indicator:

Replace batteries when this indicator is shown.

Programmable Time Period Icons:

This thermostat has 4 programmable time periods per day.

Important:

The low battery indicator is displayed when the AA battery power is low. If the user fails to replace the battery within 21 days, the thermostat display will only show the low battery indicator as a final warning before the thermostat becomes inoperable. The batteries are located on the back of the thermostat.

Clean Display: Pressing CLEAN DISPLAY will allow 30 seconds to clean the display. The keys will be inoperable during this time. CLEAN will appear if your contractor has programmed a filter change reminder. Press CLEAN when filter has been replaced to reset the filter change reminder timer.

NOTE ABOUT THE LIGHT BUTTON: This button is used to light up the display, but it is also used to set up communication with the base module. DO NOT hold the light button down for more then 10 seconds, unless you are performing the initial communication setup steps.

REMOTE indicates a remote has control of the system.

HOLD is displayed when thermostat program is permanently overridden.

Indicates Energy Star® approved program is being used.

Displays the user selectable setpoint temperature.

System operation indicators:

The COOL, HEAT or FAN icon will display when the COOL, HEAT or FAN is on. NOTE: The compressor delay feature is active if these icons are flashing. The compressor will not turn on until the 5 minute delay has elapsed.

COOL HEAT FAN

INSTALLATION TIPS

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 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

• Where appliances could radiate heat

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

Wall locations

PRO1 Tip

NO NO YES

INSTALLATION TIPS

Do not install the base module in locations:

• That are behind a chimney

• Where temperature could exceed 150ºF

• Where rain or snow or extreme hot or cold is possible

NOTE: The base module is NOT weatherproof.

Base Module - Basement Installation

PRO1 Tip

Wireless Range

Range between the T955W and the base module is up to 100 feet with no obstructions and up to 50 feet in standard residential metal, brick, and concrete construction. To extend the range try placing the base unit higher if in a basement or further away from large metal objects.

BETTER

GOOD

ATTIC INSTALLATION

ON THE NEXT PAGE

INSTALLATION TIPS

Do not install the base module in locations:

• That are behind a chimney

• Where temperature could exceed 150ºF

• Where rain or snow or extreme hot or cold is possible

NOTE: The base module is NOT weatherproof.

Base Module - Attic Installation

PRO1 Tip

When performing an attic installation, instead of placing the base module in the attic, locate the closet nearest to the air conditioning unit. Then mount the base module high on the wall inside the closet or on the ceiling of the closet. This location will insure the base module is

below the 150ºF maximum ambient temperature specification.

Attic

Living Space Closet

MASTER THERMOSTAT SUBBASE INSTALLATION

Caution: Electrical Hazard

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

Mercury Notice:

All of Pro1’s 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.

For vertical mount put one screw top and one screw bottom.

For horizontal mount put one screw left and one screw right.

Note:

The T955W can be battery powered only if used as a stand-alone thermostat solution. The T955W must be hardwired (C and R terminals connected to 24V power) if remote sensors (R251W or R250W) are used.

Horizontal mount

Vertical mount

BASE MODULE SUBBASE INSTALLATION

Note:

To connect the base module to master thermostat, refer to the directions on page 9 of this manual.

Wiring Note:

Wire the base module’s subbase the same way you would wire a hardwired thermostat subbase.

For vertical mount put one screw top and one screw bottom.

For horizontal mount put one screw left and one screw right.

Horizontal mount

Vertical mount

W1/E

Vertical mount

Note:

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

WIRING

Terminal Designations on Base Module

Terminal Designations on T955W Master Thermostat

Terminal

2 Heat 2 Cool

Conventional System

2 Heat 2 Cool

Heat Pump System

3 Heat 2 Cool

Heat Pump System

W/E

Transformer power

(cooling)

Transformer power

(heating)

Transformer common

Energized in heating

Energized in cooling

Fan relay

First stage of heat

First stage of cool

Second stage of cool

Second stage of heat

Transformer power

(cooling)

Transformer power

(heating)

Transformer common

Heat pump changeover valve

energized in heating

Heat pump changeover valve

energized in cooling

Fan relay

Emergency heat relay

First stage of heat & cool

Second stage of cool

Auxiliary heat relay,

second stage of heat

Transformer power

(cooling)

Transformer power

(heating)

Transformer common

Heat pump changeover valve

energized in heating

Heat pump changeover valve

energized in cooling

Fan relay

Emergency heat relay

First stage of heat & cool

Second stage of cool

& second stage of heat

Auxiliary heat relay,

third stage of heat

This thermostat is shipped from the factory to operate a conventional heating and cooling system. This thermostat will also operate a heat pump system. See the “heat pump” configuration step on page 12 of this manual to configure the thermostat for heat pump applications.

Warning:

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

Powering the T955W Master Thermostat

If you add remote sensors (R250W or R251W) to this wireless system you must hardwire theT955W master thermostat.

Note:

In many heat pump systems with no emergency heat relay a jumper can be installed between E and W2.

Wiring

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.

Loosen the terminal block screws. Insert wires then retighten terminal block screws.

Wire specifications

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

Terminal

2 Heat 2 Cool

Conventional System

2 Heat 2 Cool

Heat Pump System

3 Heat 2 Cool

Heat Pump System

24 VAC Transformer power

Transformer common

24 VAC Transformer power

Transformer common

24 VAC Transformer power

Transformer common

ESTABLISHING COMMUNICATION

To set up the initial link between the Master Thermostat and the base module please follow the steps below:

Establishing Communication between T955W Master Thermostat and the Base Module

Press and hold the base module button for 3 seconds. The Blue LED will flash when ready to receive initial signal from T955W. (Base module must be powered by 24V. Blue LED will be continuously on when 24V power is present.)

Hold the Light key (shown here) of the T955W for 10 seconds, the Blue LED on the base module will stop flashing after communication has been established between base module and the T955W.

Note:

If the base module does not receive a signal from the T955W for 15 minutes it will turn off all relays until communication is reestablished. The Blue LED on the base module will also turn off to show communication has been lost.

Note:

The Blue LED on the base module will be on when power is present. The Blue LED will flash 3 times every time it receives a signal from T955W. When a relay is on the corresponding LED relay indicator will be on.

Note:

If communication has been lost for 1 hour and if freeze protection is enabled, heat and emergency heat relays will be turned on. The heat and emergency heat relays will turn on for 10 minutes every hour if there has been a call for heat in the last 24 hours.

Important:

DO NOT hold the light button on the T955W for more than 10 seconds after Step 2 above has been completed. Holding the light button down will break the communication link and the base module button will need to be pressed again to reestablish communication.

Light key

Blue LEDLED Relay Indicators

Base Module Button

Easy, Two Step Communication Link

Step 1.

Step 2.

TECHNICIAN SETUP MENU

Technician Setup Menu

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

Configure the installer options as desired using the table below.

Use the or keys to change settings and the NEXT STEP or PREV STEP key to move from one option to another. Note: Only press DONE key when you want to exit the Technician Setup options.

Press MENU button

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

This feature will flash FILT in the display after the elapsed run time to remind the user to change the filter. A setting of OFF will disable this feature.

This feature allows the installer to change the calibration of the room temperature display. For example, if the thermostat reads 70° and you would like it to read 72° then select +2.

The compressor short cycle delay protects the compressor from “short cycling”. This feature will not allow the compressor to be turned on for 5 minutes after it was last turned off.

The swing setting, often called “cycle rate”, “differential” or “anticipation” is adjustable. A smaller swing setting will cause more frequent cycles and a larger swing setting will cause fewer cycles.

Keypad lockout allows you to configure the thermostat so that none or some of the keys do not function.

The heating swing setting is adjustable from ±0.2°F to ±2°F. For Example: A swing setting of

0.5°F will turn the heating on at approximately 0.5°F below the setpoint and turn the heating off at approximately

0.5°F above the setpoint.

Pick PA or FU

PA = partial keypad lockout, which locks all the keys except the or keys.

FU = Full keypad lockout, which locks out all the keys.

Note: Keypad lockout instructions are below.

The cooling swing setting is adjustable from ±0.2°F to ±2°F. For Example: A swing setting of

0.5°F will turn the cooling on at approximately 0.5°F above the setpoint and turn the cooling off at approximately

0.5°F below the setpoint.

Selecting ON will not allow the compressor to be turned on for 5 minutes after the last time the compressor was on. Select OFF to remove this delay.

You can select the minimum compressor run time from “off”, “3”, “4”, or “5” minutes. If 3, 4, or 5 is selected, the compressor will run for at least the selected time before turning off.

You can adjust the room temperature display to ready -4°F to +4°F above or below the factory calibrated reading.

You can adjust the filter change reminder from OFF to 2000 hours of runtime in 50 hour increments.

OFF 0 ºF OFF ON 0.5 ºF 0.4 ºF PA

TECH SETUP

STEPS CONTINUED

ON THE NEXT PAGE

This feature allows the installer to select the minimum run time for the compressor. For example, a setting of 4 will force the compressor to run for at least 4 minutes every time the compressor turns on, regardless of the room temperature.

Tech Setup Steps

Minimum

Compressor

On Time

Compressor

Short Cycle

Delay

Cooling

Swing

Heating

Swing

Keypad Lockout

Room

Temperature

Calibration

Filter

Change

Reminder

Note: To lock the keypad hold down the and keys for 3

seconds. You will see a lock in the display. To unlock the keypad hold down the and keys for 3 seconds.

TECHNICIAN SETUP MENU

TECH SETUP

STEPS CONTINUED

ON THE NEXT PAGE

Use the or key to select the maximum heat setpoint.

90 ºF

Adjustment Options

Factory Default Settings

This feature allows you to set a maximum heat setpoint value. The setpoint temperature cannot be raised above this value.

Tech Setup Steps (Continued from the previous page)

Heating

Temperature

Setpoint Limit

LCD Will Show

Use the or key to select the minmum cool setpoint.

44 ºF

This feature allows you to set a minimum cool setpoint value. The setpoint temperature cannot be lowered below this value.

Cooling

Temperature

Setpoint Limit

Use the or key to select 12 or 24 hour clock.

12 Hour Clock

You can select either a 12 or 24 hour clock setting.

12 or 24

Hour Clock

Use the or key to turn on or off.

This feature turns your system on before the WAKE programming time to ensure the enviroment is at the WAKE setpoint when the WAKE time period begins. This recovery changes over time based on the previous day’s experience.

Morning

Recovery

Use the or key to select 7d for 7 day, 5d for 5+1+1, or 0d for nonprogammable.

You can configure this thermostat to have a 7 day program, a 5+1+1 program or nonprogrammable.

Program

Options

Select F for Fahrenheit temperature read out or select C for Celsius read out

ºF for Fahrenheit

ºC for Celsius

ºF

ºF or ºC

The second stage will turn on at 2x the swing setting. The second stage will turn off when 1x the swing is

reached. For example, if the swing setting is .8 degrees for heating and the thermostat is set at 70ºF, the first stage will turn on at approximately 69.2ºF. The second stage will turn on at 68.4ºF. The second stage will turn off at 69.2ºF and the first will turn off at 70.8ºF. If third stage is used, it will turn on at 3x the swing

and turn off at approximately 2x the swing.

Balance Point:

The system operates differently when a balance point is used on a dual fuel system. The balance point outdoor temperature setting will be the outdoor temperature at which the thermostat chooses either the heat pump or gas furnace. For Example: A balance point setting of 30ºF will turn on only the heat pump

above 30ºF and only the gas furnace below 30ºF. Y1 will be stage one above 30ºF and W2 will be stage one below 30ºF.

PRO1 Tip

OFF configures display light to come on only with the light key, which will save battery power.

ON configures the display light to come on when any key is pressed.

The display light can be configured to come on when any key is pressed or only when the light key is pressed.

Display

Light

TECHNICIAN SETUP MENU

If ON is selected the beep will sound.

If OFF is selected, there is no sound.

OFF configures the thermostat for non heat pump systems.

ON configures the thermostat for heat pump systems.

OFF ON OFF

Adjustment Options

Factory Default Settings

When any key is pressed an audible beep will sound.

You can choose ON or OFF

When turned on the thermostat will operate a heat pump.

1. EM.Heat will show as an option in the system switch.

2. Y will be first stage of heat & cool, W/E will be emergency heat relay & W2 will be auxiliary heat relay.

Allows you to put your phone number in the display.

You can choose

ON or OFF

Tech Setup Steps (Continued from the previous page)

Contractor

Call Number

Beep Heat Pump

LCD Will Show

Heat - Off - Cool

You can configure the system switch for the particular application:

Heat - Off - Cool, Heat - Off, Cool - Off, Heat - Off - Cool-Auto

Note: EM. Heat will show if in heat pump mode.

System

Switch

Gas Auxiliary

for Heat Pump

Cooling Fan

Delay

Use the or key until the desired application is flashing.

GAS

ELEC

GAS

Select GAS for systems that control the fan during a call for heat.

Select ELEC to have the thermostat control the fan during a call for heat.

Fan

Operation

OFF OFF

Use the or key to select the desired number and the FAN or SYSTEM key to move from one character to another. See note below on operation.

If selected ON, you will see the input screen after pressing next step.

Note:

Connect an optional R250W outdoor remote temperature sensor to enable the balance point tech setup option.

The cooling fan delay setting will delay the fan from coming on in cool mode and keep running after the compressor shuts off for a short time to save energy in some systems.

You can select the Cooling Fan Delay from OFF, 15, 30, 60 or 90 seconds.

If 15, 30, 60 or 90 is selected the fan will not turn on for that many seconds when there is a call for cool and will run for that many seconds after satisfying a call for cool.

This feature is disabled when a R250W is used.

See Balance Point on page 13.

This option will turn the heat pump off 45 seconds after the auxiliary heat relay turns on.

For 2 heat applications, the first stage will turn off 45 seconds after the auxiliary stage turns on.

For 3 heat applications, the first and second stage will turn off 45 seconds after the auxiliary stage turns on.

For heat pump systems that are “dual fuel” (use a gas furnace for auxiliary stage heat) you can turn this feature on to turn off the heat pump when the auxiliary stage of heating has been called for.

This feature is disabled when a R250W is connected.

See Balance Point on page 13.

Outdoor

Sensor

Enables the use of an outdoor sensor R250W.

Connecting a R250W allows for a balance point setting.

Selecting YES requires the T955W master thermostat to be powered with 24V on C and R terminals.

See R250W user guide for more information.

When NO is selected the thermostat is unable to connect to an outdoor remote sensor R250W.

When YES is selected the thermostat is able to connect to an outdoor remote sensor R250W.

Press and hold connect button on R250W until the T955W says FOUND OUTDOOR on display.

TECH SETUP

STEPS CONTINUED

ON THE NEXT PAGE

TECHNICIAN SETUP MENU

Use or to select the zone you wish to connect.

The zone setting on the T955W and the R251W must be the same to connect.

See R251W user guide for detailed R251W connection information.

See note below for more information.

The number shown represents the zone.

YES enables local T955W sensor

NO disables local T955W sensor

YES

10, 20, 30, 35, 40, 45, 50 outdoor temperature balance point setting.

YES

15, 30, 45, 60, 75, 90 continuous run time minutes.

YES enables

freeze protection

NO disables freeze protection

YES enables Energy Star feature

NO disables Energy Star feature

YES NO

Adjustment Options

Factory Default Settings

This step connect

R251W to T955W.

The previous step

Remote Sensor

must be set to YES in order to connect an

R251W.

Disable the sensor on the master.

At least one

R251W indoor

remote sensor must be connected to disable the local T955W sensor.

Turns on the heat for 10 minutes each hour if unable to communicate with the T955W master thermostat if there has been a call for heat in the last 24 hours.

Shows the Energy Star logo when the program meets Energy Star guidelines.

Tech Setup Steps (Continued from the previous page)

Finding

Sensor

Freeze

Protection

Local Temp

Sensor

LCD Will Show

NO NO NO

Energy Star

Logo

Note:

Up to four R251W indoor temperature sensors can be connected to one T955W. This allows for 5 sensing points (zones). For Example: The local (T955W) plus four R251W sensors enables 5 sensing points. To connect an R251W to a T955W, Select 1 on the T955W FINDING SENSOR technician setup step. Then select Zone 1 on the R251W technician setup step. Then hold down the light button on the R251W until it beeps, while in ZONE technician setup step on R251W. To connect a second R251W change the T955W to read 2 and change the R251W to zone 2. The zone setting must match between the T955W and the R251W to connect. When the connection is established the T955W will show FOUND + NAME OF R251W in the system information area of the display.

Remote

Sensor

Enables the use of up to four indoor sensors

R251W.

Selecting

YES requires

the

T955W master

thermostat to be powered with 24V on

C and R terminals.

When

NO is selected

the thermostat is unable to connect to an indoor remote sensor R251W.

When

YES is selected

the thermostat is able to connect to up to four indoor remote sensors R251W.

Go to the next step FINDING SENSOR to connect R251W.

Stages

of Heat

Balance

Point

Balance

Run Time

2 Stages

You can configure the thermostat to operate a 3 stage heat pump system.

2H 2C = 2 heat, 2 cool 3H 2C = 3 heat, 2 cool

This feature only shows if Technician Setup Step for HEAT PUMP is set to ON.

Balance point can eliminate the need for a fossil fuel kit.

An outdoor temperature above balance point will cause the thermostat to only allow the Y terminal(s) to energize. An outdoor temperature below balance point will cause the thermostat to only allow the W2 to energize.

Balance point run time will allow the W2 auxiliary terminal to energize even if outdoor temperature is above the selected balance point temperature. If enabled, auxiliary will energie for the current cycle after the balance point run time has expired.

Use the or key to change between 2 heat and 3 heat.

2 heat will use Y1 as first stage and W2 as auxiliary.

3 heat will use Y1 as first stage, Y2 as second stage and W2 as auxiliary.

Requires R250W

Tech Setup Steps (Continued from the previous page)

MOUNT THERMOSTAT & BATTERY INSTALLATION

Mount Thermostat and Base Module

Align the 4 tabs on the subbase with corresponding slots on the back of the thermostat or base module. Then push gently until the thermostat or base module snaps in place.

On the back of the thermostat insert 2 AA Alkaline batteries (included).

Battery installation is optional if there are no remotes connected to the Master Thermostat (C terminal connected). If you connect an outdoor remote and/or indoor remote sensors it is required the thermostat be hardwired.

Note:

The base module can be wired from the back or the bottom.

PROGRAMMING THE THERMOSTAT

Set Time

Programming

Weekday

Wake 6 a.m. 70° F (21° C) 75° F (24° C) System Average

Leave 8 a.m. 62° F (17° C) 83° F (28° C) System Average

Return 6 p.m. 70° F (21° C) 75° F (24° C) System Average

Sleep 10 p.m. 62° F (17° C) 78° F (26° C) System Average

Factory Default Program

Saturday

Wake 8 a.m. 70° F (21° C) 75° F (24° C) System Average

Leave 10 a.m. 62° F (17° C) 83° F (28° C) System Average

Return 6 p.m. 70° F (21° C) 75° F (24° C) System Average

Sleep 11 p.m. 62° F (17° C) 78° F (26° C) System Average

Sunday

Wake 8 a.m. 70° F (21° C) 75° F (24° C) System Average

Leave 10 a.m. 62° F (17° C) 83° F (28° C) System Average

Return 6 p.m. 70° F (21° C) 75° F (24° C) System Average

Sleep 11 p.m. 62° F (17° C) 78° F (26° C) System Average

Day of the

Week

Setpoint

Temperature (Cool)

Zone

(If R251W is connected)

Setpoint

Temperature (Heat)

TimeEvents

Follow the steps below to set the day of the week and current time:

Press MENU

Press SET TIME

Day of the week will be flashing. Use the or key to select the current day of the week.

Press NEXT STEP

The current hour is flashing. Use the or key to select the current hour. When using 12-hour time, make sure the correct a.m. or p.m. choice is selected.

Press NEXT STEP

Minutes are now flashing. Use the or key to select current minutes.

Press DONE when completed

All programmable Pro1 thermostats are shipped with an energy saving pre-program. You can customize this default program by following the Set Program Schedule.

Your thermostat can be programmed to have each day of the week programmed uniquely (7days), all the weekdays the same with a separate program for Saturday and a separate program for Sunday (5+1+1), or nonprogrammable. There are four time periods for each day (WAKE, LEAVE, RETURN, SLEEP). This thermostat has a programmable fan feature, which allows you to run the fan continuously during any time period.

PROGRAMMING THE THERMOSTAT

You can use the table below to plan your customized program schedule if using 5+1+1.

Wake

Leave

Return

Sleep

Wake

Leave

Return

Sleep

Wake

Leave

Return

Sleep

Weekday

Customize Your Program

Saturday

Sunday

Day of the

Week

Setpoint

Temperature (Cool)

Zone

(If R251W is connected)

Setpoint

Temperature (Heat)

TimeEvents

PROGRAMMING THE THERMOSTAT

Set 5+1+1 Program Schedule

To customize your 5+1+1 program schedule, follow these steps

Weekday:

Saturday:

Select HEAT or COOL using the SYSTEM key. Note: You have to program heat and cool each separately.

Press MENU

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

Time is flashing. Use the or 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.

Press NEXT STEP

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

Press NEXT STEP

Repeat steps 4 through 7 for weekday LEAVE time period, for weekday RETURN time period, and for weekday SLEEP time period.

Repeat steps 4 through 7 for Saturday WAKE time period, for Saturday LEAVE time period, for Saturday RETURN time period, and for Saturday SLEEP time period.

Sunday:

Repeat steps 4 through 7 for Sunday WAKE time period, for Sunday LEAVE time period, for Sunday RETURN time period, and for Sunday SLEEP time period.

10.

Additional step if R251W indoor remote sensor is connected.

The T955W master thermostat will either average all sensors (system average) or only use one sensor for the system ambient temperature (priority). The default setting is SYSTEM AVERAGE, which means all sensors are averaged to create the system average ambient temperature reading. The NEXT ZONE key can be pressed to change the priority. The system information area of the display shows the priority.

For Example: There is an R251W connected and it is named REMOTE 1. If the NEXT ZONE key is pressed until REMOTE 1 is shown, then the REMOTE 1 ambient temperature

reading will be used exclusively for that time period. All other sensors will be ignored.

To customize your 7 day program schedule, follow these steps:

Select HEAT or COOL using the system key. You have to program heat and cool each separately.

Press MENU

Press SET SCHED Note: Monday is displayed and the WAKE icon is shown. You are now programming the WAKE time period for the Monday setting.

Time is flashing. Use the or key to make your time selection for the Monday WAKE time period. Note: If you want the fan to run continuously during this time period, select ON with the FAN key.

Press NEXT STEP

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

Press NEXT STEP

Repeat steps 4 thru 7 for Monday LEAVE time period, for Monday RETURN time period, and for Monday SLEEP time period.

PROGRAMMING THE THERMOSTAT

Monday

Repeat steps 4 thru 7 for the remaining days of the week.

Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday

A Note About Auto Changeover:

Auto changeover will switch between heating and cooling as needed. It is very important to make sure the cooling setpoint temperature is at

least 3º above the heating setpoint temperature

and that the heating setpoint temperature is at

least 3º below the cooling setpoint temperature.

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.

Set 7 Day Program Schedule

Additional step if R251W indoor remote sensor is connected.

For Example: There is an R251W connected and it is named REMOTE 1. If the NEXT ZONE key is pressed until REMOTE 1 is shown, then the REMOTE 1 ambient temperature

reading will be used exclusively for that time period. All other sensors will be ignored.

The display range of temperature The control range of temperature Load rating Display accuracy Swing (cycle rate or differential)

Power source

Operating ambient Operating humidity Dimensions of thermostat Frequency

41ºF to 95ºF (5ºC to 35ºC) 44ºF to 90ºF (7ºC to 32ºC)

1 amp per terminal, 1.5 amp maximum all terminals combined ± 1ºF

Heating is adjustable from 0.2ºF to 2.0ºF Cooling is adjustable from 0.2ºF to 2.0ºF

18 to 30 VAC, NEC Class II, 50/60 Hz for hardwire (common wire) Battery power from 2 AA Alkaline batteries

32ºF to +105ºF (0º to +41ºC)

90% non-condensing maximum

4.7”W x 4.4”H x 1.1”D 916 MHz

SPECIFICATIONS & CONTACT INFORMATION

Specifications

Pro1 IAQ Inc.

1111 S. Glenstone Suite 2-100 Springeld, MO 65804

Toll-free: 1-888-Pro1iaq (776-1427) Toll Number (Outside the USA): 330-821-3600 Web: http://www.pro1iaq.com Hours of Operation: Monday - Friday 9 AM - 6 PM Eastern

T955W Thermostat

Base Module

Load rating Power source

Operating ambient Operating humidity

1 amp per terminal, 1.5 amp maximum all terminals combined 18 to 30 VAC, NEC Class II, 50/60 Hz Battery power from 2 AA Alkaline batteries

32ºF to +150ºF (0º to +65ºC)

90% non-condensing maximum

Toptech truecomfort iii Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual