INSTALLATION MANUAL
Contents
1. 4 Time is flashing Use the lt lt or gt 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 5 Press NEXT STEP 6 The setpoint temperature is flashing Use the A or Vv key to make your setpoint selection for the Monday WAKE period 7 Press NEXT STEP 8 Repeat steps 4 thru 7 for Monday LEAVE time period for Monday RETURN time period and for Monday SLEEP time period Tuesday Wednesday Thursday Friday Saturday Sunday Repeat steps 4 thru 7 for the remaining days of the week A Note About Auto Changeover A Note About Programmable Fan Auto changeover will switch between heating The programmable fan feature will and cooling as needed It is very important to run the fan continuously during any make sure the cooling setpoint temperature is at time period it is programmed to be least 3 above the heating setpoint temperature on This is the best way to keep the and that the heating setpoint temperature is at air circulated and to eliminate hot least 3 below the cooling setpoint temperature and cold spots in your building SPECIFICATIONS amp CONTACT INFORMATION Specifications T955WH Thermostat 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 Bociek rengi ME 1 amp per terminal 1 5 amp maximu2. Rev 101 THERMOSTAT QUICK REFERENCE Getting to know your thermostat 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 4 LoD SS oo Days of the week and time Flashes ambient humidity level May also flash outside temperature m when used with R250W OUTDOOR will show REMOTE indicates a remote has control of the system HOLD is displayed when thermostat program is permanently overridden Programmable Time Period Icons Glow in the Dark Light Button Fan Button System Button Temperature Setpoint Buttons Menu Button 900000 Humidity Button This thermostat has 4 programmable time periods per day Temperature Indicates the current system temperature Humidity Shows the humidity target setpoint settings and keys Clean Display Pressing CLEAN DISPLAY will allow 30 seconds to clean the display The keys will be inoperable during this time Displays the user selectable setpoint temperature System operation indicators e D s COOL HEAT FAN 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 flash
3. INSTALLATION MANUAL This manual covers the following models e T955WH Master Thermostat e Base Module TRUE COMFORT Thermostat Applications Guide Description 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 Humidity Table of Contents Thermostat Quick Reference 2 Installation Tips 3 5 Subbase Installation 6 7 Wiring 8 Establishing Communication 9 Technician Setup Menu 10 14 Mounting amp Battery Installation 15 Setting The Humidity 16 Programming The Thermostat 17 20 Specifications amp Contact Info 21 Una versi n espa ola de este manual puede ser descargada en www pro1iaq com U S Registered Trademark Patents pending Copyright 2010 PRO1 IAQ Inc All rights reserved Power Type Battery Power Hardwire Common Wire Hardwire Common Wire with Battery Backup If using remote sensors the thermostat must be hardwired 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 Prot Customer Care toll free at 888 Pro1iag 776 1427 during normal business hours Mon Fri 9 AM 6 PM Eastern
4. Tech Setup Steps Continued from the previous page Humidify Dehumidify Humidity Calibration This feature adds This feature This feature allows humidity when removes humidity the installer to System key is when System key change the in Heat is in Cool callibration of the ambient humidity displayed LCD Will Show Dehumidity Over Cool HUM DHM with AC Limit Terminal Terminal This feature forces The amount of over Options for how the Option for how DHM the A C to run cooling allowed when Hum terminal terminal energizes longer to remove using A C to remove energizes humidity when humidity This screen needed The A C will over cool the room a few degrees until the humidity reaches the desired setpoint is only shown when ON is selected in the Dehumidify with AC tech setup step Adjustment Options Use the lt or gt Use the lt or gt Use the lt or gt Use the lt or gt Use the lt or gt Use the lt or gt Use the lt or gt key to turn on or off key to turn on or off key to adjust the key to select YES or key to select the key to select one of the key to select one of the calibration 3 0 maximum number of four options four options If ON is selected the If ON is selected the e edl humidity will be humidity will be If selected YES allows I View the View the displayed on the main displayed on the main over cooling to be used Options ares HUM Ter
5. next step RA 1 a gt d OFF is ty key to select the there is no sound desired number and the FAN or SYSTEM key to move from one character to another See note below on operation OFF configures the thermostat for non heat pump systems ON configures the thermostat for heat pump systems Use the lt or key eA desired application is flashing GAS or ELEC For heat Ea 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 a This feature is disabled when a 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 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 Mere This feature is disabled until the T955WH says See Balance Point When a R250W is used FOUND OUTDOOR on page 13 on display See Balance Point on page 13 Factory Default Settings OFF ON OFF Heat Off Cool GAS OFF OFF NO Note TECH SETUP Connect an optional R250W outdoor remote temperature sensor to STEPS CONTINUED
6. Factory Default Settings 90 F 44 F F 12 Hour Clock ON 5d ON TECH SETUP STEPS CONTINUED ON THE NEXT PAGE PRO Tip 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 70 F the first stage will turn on at approximately 69 2 F The second stage will turn on at 68 4 F The second stage will turn off at 69 2 F and the first will turn off at 70 8 F 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 30 F will turn on only the heat pump above 30 F and only the gas furnace below 30 F Y1 will be stage one above 30 F and W2 will be stage one below 30 F Tech Setup Steps Continued from the previous page Contractor Beep Call Number Allows you to put When any key is your phone pressed an audible number in the beep will sound display You can choose You can choose ON or OFF ON or OFF LCD Will Show Heat Pump When turned on the thermostat will operate a heat pump 1 EM Heat will show as an option in the system switch 2 Y
7. ON THE NEXT PAGE enable the balance point tech setup option nore cal lemp reeze ergy star STages ol NSO rotectior 000 yt Hea IUrNs On Tne nedi NOWS ie Cherg 10U Can contigure ine TW a Ciar 4 tharmoctat to qnernt ainat ror 10 minutes JI go wnen T ermosSTAT TO Operai eHimMm KAD IV 1955WH each hour It unable program meert 9 SIQQGE Meal Pullip t 0 COMMU ule l SYSTCITI E pi tep 2 l ith the T955WH NEMO Or aster th at ANZL Z mUSI f YES f ustr j Ihe number s YE l YE E mn tection 2 m th Ic m ERA atn o j H j l amp in 4 i al e 1759 W and J IW mu me TO con e R251W u Z3 1 orma n infor matior to t Up to four R251W indoor temperature sensors can be connected to one T955WH This allows for 5 sensing points zones For Example The local T955WH H plus four R251W sensors enables 5 sensing points To connect an R251W to a T955WH Select 1 on the T955WH 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 T955WH and the R251W to connect When the connection is established the T955WH will show FOUND NAME OF R251W in the system information area of the display TECHNICIAN SETUP MENU
8. the fan continuously during any time period Factory Default Day of the Event i Week ade Ime ei Heat atte te Cool ape Weekday Wake ft Leave aft Return ff Sleep A Saturday Wake f Leave iff Return f Sleep fi Wake f Leave af Return iff Sleep f 6 a m 8 a m 6 p m 10 p m 8 a m 10 a m 6 p m 11 p m 8 a m 10 a m 6 p m 11 p m 70 F 21 C 62 F 17 C 70 F 21 C 62 F 17 C 70 F 21 C 62 F 17 C 70 F 21 C 62 F 17 C 70 F 21 C 62 F 17 C 70 F 21 C 62 F 17 C 75 F 24 C 83 F 28 C 75 F 24 C 78 F 26 C 75 F 24 C 83 F 28 C 75 F 24 C 78 F 26 C 75 F 24 C 83 F 28 C 75 F 24 C 78 F 26 C System Average System Average System Average System Average System Average System Average System Average System Average System Average System Average System Average System Average PROGRAMMING THE THERMOSTAT You can use the table below to plan your customized program schedule if using 5 1 1 Da hes Tempeaiwe Heat ie Cool oreo Weekday Saturday Wake fi Leave if Return fi Sleep fi Wake ff Leave af Return f Sleep A Wake f Leave af Return ft Sleep f Factory Default orah PROGRAMMING THE THERMOSTAT Set 54 1 1 Program Schedule To customize your 5 1 1 program schedule follow these steps Week
9. will be first stage of heat amp cool W E will be emergency heat relay amp W2 will be auxiliary heat relay System Switch 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 Fan Operation 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 Gas Auxiliary for Heat Pump 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 Cooling Fan Delay 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 Outdoor Sensor Enables the use of an outdoor sensor R250W Connecting a R250W allows for a balance point setting Selecting YES requires the T955WH master thermostat to be powered with 24V on Cand R terminals See R250W user guide for more information Adjustment Options lf selected ON you If ON is selected will see the input the beep will screen after pressing cound
10. ation SO Do not install thermostat in locations e Close to hot or cold air ducts e That are in direct sunlight e With an outside wall behind the thermostat e In areas that do not require conditioning e Where there are dead spots or drafts in corners or behind doors e Where there might be concealed chimneys or pipes e Where appliances could radiate heat PRO1 Tip Pick an installation location that is easy for the user to access The temperature of the location should be representative of the building Base Module Basement Installation INSTALLATION TIPS ATTIC INSTALLATION ON THE NEXT PAGE gt Wireless Range Range between the T955WH 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 Moisture l I BETTER W A 7 Exterior Wall Interior Wa PRO1 Tip Do not install the base module in locations e That are behind a chimney e Where temperature could exceed 150 F e Where rain or snow or extreme hot or cold is possible NOTE The base module is NOT weatherproof INSTALLATION TIPS Base Module Attic Installation 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 hi
11. day 1 Select HEAT or COOL using the SYSTEM key Note You have to program heat and cool each separately 2 Press MENU 3 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 Additional step if R251W indoor remote sensor is connected The T955WH 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 4 Time is flashing Use the lt or gt 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 5 Press NEXT STEP 6 The setpoint temperature is flashing Use the A or Vv key to make your setpoint selection for the weekday WAKE period 7 Press NEXT STEP 8 Repeat steps 4 through 7 for weekday LEAVE time period for weekday RETURN time period and
12. ected to 24V power if remote sensors R251W or R250W are used BASE MODULE SUBBASE INSTALLATION Wiring Note Note Wire the base module s subbase To connect the base module to the same way you would wire a master thermostat refer to the hardwired thermostat subbase directions on page 9 of this manual For vertical mount put one screw top and one screw bottom For horizontal mount put OF wien mow one screw left and one vf screw right L as Horizontal mount Horizontal mount Prerica mount Note The base module must be hardwired C and R terminals connected to 24V power 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 terminal block screws Terminal Designations on Base Module Warning All components of the control system and the thermostat installation must conform to Class Il circuits per the NEC Code 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 E and W2 This thermostat is shipped from the factory to operate a conventional heating and cooling system This thermostat will al
13. ed 3 Drywall anchors should be flush with the wall 4 Wires should be pushed into the wall Note The base module can be wired from the back or the bottom Battery Installation 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 Sai ie ace ie See A i sl On the back of the thermostat insert 2 AA Alkaline batteries included SETTING THE HUMIDITY Setting Target Humidity Setpoint Follow the steps below to change your target humidity setpoint Press the HUMIDITY key Use the lt lt or gt key to select the target humidity setpoint Press DONE when completed Note The target humidity setpoint is not programmable Unlike temperature humidity does not change quickly and should not be programmed HUMIDITY KEY Note Humidity is only energized during heat Dehumidity is only energized during cool Heat and Cool each have their own target setpoints TARGET HUMIDITY SETPOINT KEYS Ambient Humidity Display Ambient humidity will flash opposite the day and time if the optional R250W outdoor temperature sensor is installed the ambient outdoor temperature will also cycle in the display AMBIENT HUMIDITY DAY amp TIME OUTDOOR TEMPERATURE Recommended Heating Settings ES Outside Recommended Increasing Humidity Tem
14. for weekday SLEEP time period Saturday Sunday 9 Repeat steps 4 through 7 for 10 Repeat steps 4 through 7 for Saturday WAKE time period for Sunday WAKE time period for Saturday LEAVE time period for Sunday LEAVE time period for Saturday RETURN time period and Sunday RETURN time period and for Saturday SLEEP time period for Sunday SLEEP time period PROGRAMMING THE THERMOSTAT Set 7 Day Program Schedule To customize your 7 day program schedule follow these steps Monday 1 Select HEAT or COOL using the system key You have to program heat and cool each separately 2 Press MENU 3 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 Additional step if R251W indoor remote sensor is connected N The T955WH 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
15. g Program Temperature Temperature Hour Clock Recovery Options Setpoint Limit Setpoint Limit This feature This feature Select F for You can select This feature turns your You can configure this The display light can allows you to set a allows you to set a Fahrenheit either a 12 or 24 system on before the thermostat to have a be configured to come maximum heat minimum cool temperature read hour clock setting WAKE programming 7 day program a on when any key is setpoint value setpoint value out or select C for time to ensure the 5 1 1 program or pressed or only when The setpoint The setpoint Celsius read out enviroment is at the nonprogrammable the light key is pressed temperature temperature WAKE setpoint when cannot be raised cannot be lowered the WAKE time period above this value below this value begins This recovery changes over time based on the previous day s experience LCD Will Show Adjustment Options Use the lt or gt Use the lt or D gt F for Fahrenheit Use the lt or gt Use the lt or gt Use the lt or gt OFF configures display key fo select the key to select the key to select 12 or 24 key to turn on or off key to select 7d for7 light to come on only maximum heat minmum cool C for Celsius hour clock day 5d for5 1 1 with the light key setpoint setpoint or Od for which will save battery nonprogammable UIE ON configures the display light to come on when any key is pressed
16. gh on the wall inside the closet or on the ceiling of the closet This location will insure the base module is below the 150 F maximum ambient temperature specification m _ss M S Toa Living Space Closet PRO1 Tip Do not install the base module in locations e That are behind a chimney e Where temperature could exceed 150 F e Where rain or snow or extreme hot or cold is possible NOTE The base module is NOT weatherproof MASTER THERMOSTAT SUBBASE INSTALLATION Caution Mercury Notice Electrical Hazard All of Pro1 s products are Failure to disconnect the mercury free However if the power before beginning to product you are replacing install this product can cause contains mercury dispose of it electrical shock or equipment properly Your local waste damage management authority can give you instructions on recycling and proper disposal For vertical mount put Vertical mount one screw top and one screw bottom For horizontal mount put one screw left and one screw right NOTE To insure a solid fit between the thermostat and Pi the subbase mount the subbase S on a flat wall with Horizontal the drywall anchors meno flush to the wall Using the screws and drywall anchors that were provided with the thermostat Vertical mount Note The T955WH can be battery powered only if used as a stand alone thermostat solution The T955WH must be hardwired C and R terminals conn
17. ing The compressor will not turn on until the 5 minute delay has elapsed 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 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 Low Battery Indicator Replace batteries when this indicator is shown Program Menu Options Shows different options during programming System Information Shows which zone or zones are controlling your system Shown only when one or more indoor sensors R251W are connected DO NOT hold the light button down for more then 10 seconds unless you are performing the initial communication setup steps Wireless Icon Removing the private label badge Use the bevel on lower ridge 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 The badge should pry off easily Do not use force Daan E Magnet in doa SRR PRO1 Tip All Pro1 thermostats use the same universal magnetic badge Visit our website at www protiag com to learn more about our free private label program 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 circul
18. m all terminals combined Display accuracy sececenereeesecseesaeeeseuss 1 F Swing cycle rate or differential Heating is adjustable from 0 2 F to 2 0 F Cooling is adjustable from 0 2 F to 2 0 F Power SOUNCE co succceaneeneecenenaedememare 18 to 30 VAC NEC Class II 50 60 Hz for hardwire common wire Battery power from 2 AA Alkaline batteries Operating ambient 32 F to 105 F 0 to 41 C Operating MUNN GNIIY exe next see teeeneree cade 90 non condensing maximum Dimensions of thermostat 4 7 W x 4 47H x 1 1 D Frequency sae icepeenetatrenseeerneeeeeaesteauaeniee 916 MHz Base Module Load rating mec ececeeeecenncceececeenecoce 1 amp per terminal 1 5 amp maximum all terminals combined Power SOUICe 2 2 e eee eee eee eee 18 to 30 VAC NEC Class II 50 60 Hz Operating ambient __ 32 F to 150 F 0 to 65 C Operating humidity 90 non condensing maximum Contact Us Pro1 IAQ Inc 1111S Glenstone Suite 2 100 Springfield MO 65804 Toll free 1 888 Proliag 776 1427 Toll Number Outside the USA 330 821 3600 Web http www proliag com Hours of Operation Monday Friday 9 AM 6 PM Eastern
19. minal chart DHM Terminal chart screen and Hum screen and DHM to control humidity in 2 3 4 5 below for an explanation below for an explanation terminal will energize terminal will energize Cool mode If NO is of these options of these options when humidity when humidity selected the system will setpoint is above setpoint is below not use over cooling ambient humidity in ambient humidity in Heat mode Cool mode Factory Default Settings OFF OFF 0 NO 3 l HUM Terminal DHM Terminal HUM terminal energizes when DHM terminal energizes when TS the ambient humidity is OTON the ambient humidity is below the humidity setpoint and above the humidity setpoint and heat or fan is energized cool or fan is energized 2 below the humidity setpoint and 2 above the humidity setpoint It will also heat is energized energize the fan during a call for humidity 3 below the humidity setpoint It will also energize the fan during a call 3 above the humidity setpoint for humidity 4 above the humidity setpoint and 4 below the humidity setpoint the compressor is not running MOUNT THERMOSTAT amp 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 Note To insure a solid fit between the thermostat and the subbase 1 Mount subbase to a flat wall 2 Use screws provid
20. perature 0 F Relative Humidity The table on the right shows 20 and above 35 to 40 recommended indoor humidity levels in 10 20 relation to outdoor temperatures during heating adding humidity 0 25 o 20 20 15 Recommended Cooling Settings Consult your professional HVAC technician for recommended settings for your climate PROGRAMMING THE THERMOSTAT Set Time Follow the steps below to set the day of the week and current time 1 Press MENU 2 Press SET TIME 3 Day of the week will be flashing Use the lt lt or gt key to select the current day of the week 4 Press NEXT STEP 5 The current hour is flashing Use the lt lt or 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 STEP Minutes are now flashing Use the lt or gt key to select current minutes 8 Press DONE when completed Programming 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
21. so 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 2 Heat 2 Cool Terminal Conventional System Transformer power cooling Transformer power heating Transformer common Energized in heating Energized in cooling Fan relay First stage of heat First stage of cool 2 Heat 2 Cool Heat Pump System 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 amp cool 3 Heat 2 Cool Heat Pump System 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 amp cool Second stage of cool Second stage of cool Second stage of cool amp second stage of heat Second stage of heat Humidity Auxiliary heat relay second Stage of heat Humidity Auxiliary heat relay third stage of hea Humidity Dehumidify 2 Heat 2 Cool Terminal Conventional System 24 VAC Transformer power Transformer common Dehumidify 2 Heat 2 Cool Heat Pump System 24 VAC Transformer power Transformer common Powering the T955WH Master Thermosta
22. t If you add remote sensors R250W or R251W to this wireless system you must hardwire theT955W master thermostat Dehumidify 3 Heat 2 Cool Heat Pump System 24 VAC Transformer power Transformer common ESTABLISHING COMMUNICATION Establishing Communication between T955W Master Thermostat and the Base Module Easy Two Step Communication Link To set up the initial link between the Master Thermostat Step 1 LED Relay Indicators Blue LED for use with T955WH and the base module please follow the steps below 1 Press and hold the base module button for 3 seconds The Blue LED will flash when ready to receive initial signal from T955WH Base module must be powered by 24V Blue LED will be continuously on when 24V power is present 2 Hold the Light key Shown here of the T955WH for 10 seconds the Blue LED on the base module will stop flashing after communication has been established between base module and the T955WH Base Module Button Note The Blue LED on the base module will be on when power is present The Blue LED Step 2 will flash 3 times every time it receives a Light key N signal from T955WH When a relay is on the corresponding LED relay indicator will be on Note If the base module does not receive a signal from the T955WH 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 Important communica
23. tion has been lost DO NOT hold the light button on the T955WH for more than 10 seconds after Step 2 Note above has been completed Holding the light button down 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 will break the communication link and the base module button will need to be pressed again to reestablish communication This thermostat has a technician setup menu for easy installer configuration To set up the thermostat for your particular application Press MENU button 2 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 3 Configure the installer options as desired using the table below Use the lt lt or gt 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 lote To lock the keypad hold down the A and keys for 3 seconds You will see a lock in the display To unlock the keypad ON THE pes hold down the A and Y keys for 3 seconds TECHNICIAN SETUP MENU Tech Setup Steps Continued from the previous page Heating Cooling 12 or 24 Mornin
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