Pro 1 iaq True comfort iii t955w User 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. 0932

Una versión española de este

manual puede ser descargada

en www.pro1iaq.com

® U.S. Registered Trademark. Patents pending.

Thermostat Quick Reference

Installation Tips

Subbase Installation

Wiring

Establishing Communication

Technician Setup Menu

Mounting & Battery Installation

Programming The Thermostat

Specifications & Contact Info

3-5

6-7

10-13

15-18

Description

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

5Temperature

Setpoint Buttons

6Menu 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 Gterminal.

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.

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 Ffor

Fahrenheit

temperature read

out or select Cfor

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

Cand Rterminals.

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

1YES 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 1on 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

Cand 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