GE CC-SCSTAT User's Manual
Contents
1. s schedule When the button shows Copy go to the Copy schedule screen on page 11 Up Increase time or temperature Down Decrease time or temperature 11 Copy schedule screen The Copy schedule screen Figure 7 is a sub screen of the Heat and cool schedule screen on page 10 The Copy schedule screen allows you to copy a day s schedule to another day or group of days To copy a day s schedule do the following 1 Select the day to be copied in the Heat and cool schedule screen Scroll to the C at the bottom of the Heat and cool schedule screen to highlighted it The Next button will change to the Copy button Press Copy to open the Copy schedule screen see Heat and cool schedule screen on page 10 2 Scroll through the days in the Copy schedule screen and select the days the schedule is to be copied to by setting the N under each day to Y using the Up Yes and Down No buttons 3 After selecting all the days desired press Copy 4 Press Back to exit the Copy schedule screen Figure 7 Copy schedule screen Copy Monday Schedule us Up Yes Sun Tue Wed Thu Eri Sat NY vo YN Ne Down No Leok JL WR Lcopu_ Back Left Right Copy Screen navigation buttons include Back Return to the Heat and cool schedule screen on page 10 Left Move the selection bar back Right Move the selection bar forward Copy Copy the schedule to the selected days Up Yes Copy the schedule to this day Down No2. Do not connect the heating system s common wire to the control unit 36 SmartCommand Thermostat Installation Manual DIP switch SW1 settings White indicates a switch is in the On position Set the DIP switches as follows SW1 S1 HVAC system type selection Standard or heat pump Set S1 to Off STD for gas electric systems default setting Set S1 to On HP for heat pump systems SW1 S2 This is a dual use switch that depends on the switch S1 setting If S1 is set to Standard HVAC system type then S2 selects the HVAC fan type Set S2 to Off for gas systems that normally do not require fan w heat operation default setting Set S2 to On for electric systems that normally do require fan w heat operation If S1 is set to Heat pump operation then S2 selects the changeover valve operation Set S2 to Off for changeover with cooling default setting Set S2 to On for changeover with heating If the heat pump supplies heating when you expect cooling or vice versa change the SW1 S2 switch Serial network command and variable list Refer to the Serial Communications Protocol Manual 150 00225 for format details Network commands Table 3 shows the network commands and a description of each command Table 3 Network commands Command Description BF Set setback flag CFM Set F or C temperature mode Date Set date DL Set display lock DOW Set day of
3. Do not copy to this day 12 SmartCommand Thermostat Installation Manual User settings screen The User settings screen Figure 8 allows you to set or change various user options of the thermostat such as the clock minimized screen timeout Fahrenheit Centigrade mode sensor calibration and backlight settings Figure 8 User settings screen User Settings Set Clock Screen Timeout F C Mode Sensor Calibration is Done Plus Minus Screen options include Set clock Access the Set clock screen on page 13 Up Down Screen timeout Set the screen timeout time in seconds Options are 0 or 15 to 127 default is 30 seconds This is the time before any screen reverts to the Minimized screen after you stop pushing buttons You can disable the Minimized screen feature by setting this time to 0 If this is disabled all screens revert to the main Thermostat control screen on page 4 after 120 seconds F C select Select which temperature display mode you desire Fahrenheit F or Centigrade C with the and buttons Sensor calibration Access the Sensor calibration screen on page 14 Backlight Display Access the Backlight display screen on page 15 Screen navigation buttons include Done Return to the Main menu screen on page 7 Plus Increase the selected value Minus Decrease the selected value Select Select the function to be set Up Move selection pointer up Down Move selection poi
4. e For systems with changeover with heating set SW1 2 to On position to the right Note You must configure your changeover valve setting to work correctly with your HVAC system Set DIP switch SW1 as described for correct changeover operation Changeover with cool is typical for most systems Check your system information to be sure If you get cooling when you expect heating change SW1 2 to the other position 28 SmartCommand Thermostat Installation Manual Control unit connection The control unit requires 24 VAC power from the HVAC system it is controlling Connect the 24 VAC Common blue wire terminal and 24 VAC R red wire terminal from the HVAC system to the control unit s HVAC system terminal block J4 s 24V Com and 24V RH or 24V RC terminals The RH and RC terminals are connected together by JP1 factory default Common or split transformer systems Most HVAC systems have a common heating and cooling transformer Connector JP1 is jumpered to common the RH and RC inputs together for this configuration If you have a system with separate heating and cooling transformers you will need to split the RH and RC jumper by cutting the JP1 jumper When wiring split systems wire the heating system s 24VAC R red wire to the control unit s RH terminal and wire the cooling systems 24VAC R red wire to the control unit s RC terminal Wire the cooling system s 24VAC Com to the control unit s 24 VAC Com terminals Do not conn
5. 10 MOT 5 to 9 minutes 6 minutes 0 20 second test time 11 MRT 0 to 9 minutes 6 minutes 0 20 second test time 12 H delta stage 1on Oto 8 degrees 1 degree 14 H delta stage 2on Oto 8 degrees 3 degrees 16 H delta stage 3 on 0 to 8 degrees 5 degrees 18 C delta stage 1 on O to 8 degrees 1 degree 20 C delta stage 2 on O to 8 degrees 3 degrees 24 Setpoint h c delta 3 to 15 degrees 4 degrees Minimum delta T between h c setpoints 69 Service test mode 0 1 0 1 test mode sets MRT MOT 20 seconds 74 Autosend mode 0 1 0 0 off 1 on send temp mode on change The system type fan type and changeover type variables are determined by the controller DIP switch SW1 setting They can be viewed by the system variable command but cannot be changed from the network 39 Contacting technical support For assistance installing operating maintaining and troubleshooting this product refer to this document and any other documentation provided If you still have questions you may contact technical support during normal business hours Monday through Friday excluding holidays between 6 a m and 5 p m Pacific Time Table 5 Sales and support contact information Sales Technical support Phone Toll free 888 GESECURity 888 437 3287 in the US including Alaska and Hawaii Puerto Rico Canada Outside the toll free area 503 885 5700 E mail info gesecurity com generaltech ge com Fax 800 483 2495 541 752 9
6. 31 System checklist We strongly recommend that you hook up and run a simple bench test before installing the thermostat Not only will this save you time in system checkout but will also make you familiar with the thermostat s operation Thermostat bench test To bench test the thermostat do the following 1 Connect the WDU to the control unit with a short 12 to 24 in four wire cable 2 Before power up set the control unit DIP switch SW1 to ALL OFF 3 Connect power to the control unit 4 Verify the control unit status LED is blinking 5 Verify the WDU display comes on and shows the current temperature e Ifno display and backlights are not on check your wiring to the control unit e IfaCommFailure display is shown on the WDU check your wiring to the control unit e Do not proceed until the current temperature is displayed on the WDU With the current temperature displayed on the WDU you have verified communication between the WDU and the control unit Any communication problems will result in a CommFailure communications failure display on the WDU and must be fixed before proceeding 6 Press the Fan button on the WDU until Fan On is displayed The control unit s fan LED and relay should turn on Press the Fan button again and the fan LED and relay should turn off 7 Press the Mode button on the WDU until Heat Mode is displayed 8 Press the setpoint Up button until the setpoint is above the current temperature The
7. 5 to 9 minutes default 6 Set the minimum off time before another heating cooling cycle can begin Five minutes minimum is the compressor short cycle protection delay Delta T settings submenu This is a submenu of the delta or difference between the setpoint and current temperature for determining when a heat or cool call comes on Deltas are the number of degrees away from setpoint H C delta 3 to 15 degrees default 4 Set the minimum separation between heating and cooling setpoints Attempts to lower the cooling below the heating setpoint by this amount will push the heating setpoint down to maintain this separation In the same way attempts to set the heating setpoint above the cooling setpoint will push the cooling setpoint up to maintain this separation Heating delta stage 1 on 1 to 8 degrees default 1 Set the delta from setpoint that stage 1 heating starts Stage 1 turns off at setpoint Heating delta stage 2 on 1 to 8 degrees default 3 Set the delta from setpoint that stage 2 heating starts Stage 2 turns off at setpoint Heating delta stage 3 on 1 to 8 degrees default 5 Set the delta from setpoint that stage 3 heating starts Stage 3 turns off at setpoint Cooling delta stage 1 on 1 to 8 degrees default 1 Set the delta from setpoint that stage 1 cooling starts Stage 1 turns off at setpoint Cooling delta stage 2 on 1 to 8 degrees default 3 Set the delta from setpoint that stage 2 cooling starts Stage 2 t
8. HVAC system quick test You can do a quick test of the HVAC system by shorting across the appropriate terminals on the HVAC system s thermostat connector Use a short 6 in wire to connect across the terminals shown in Table 1 Table 1 Standard system quick test Function test HVAC terminals Result Fan RtoG Fan should come on Heating R to W Heat cycle should start for heating Cooling R to Y and G Compressor and fan should start for cooling Heat pump system quick test You can do a quick test for heat pump operation by shorting across the appropriate terminals on the heat pump system s thermostat connector Note that heat pumps have an additional thermostat terminal O for the changeover valve The changeover valve determines whether heating or cooling is provided Typical heat pump systems have changeover with cooling and require the O terminal to be powered to get cooling operation Use a short 6 inch wire to connect across the terminals as shown in Table 2 Table 2 Heat pump system quick test Function test HVAC terminals Result Fan RtoG Fan should come on Heating R to Y and G Compressor and fan should start and heating occurs Cooling R to Y and G and O Compressor and fan should start CO valve operates and cooling occurs Note If you have the CO selection incorrect you will get cooling when you expect heating and vice versa Change the DIP switch SW1 2 changeover setting to corr
9. and user documentation For the latest product information contact your local supplier or visit us online at www gesecurity com This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a residential environment This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio communications Changes or modifications not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment The European Union directive on electromagnetic compatibility 2004 108 EC requires non European manufacturers to designate an authorized representative in the Community Our European representative is GE Security Kelvinstraat 7 6003 DH Weert Nederland The European directive Waste Electrical and Electronic Equipment WEEE aims to minimize the impact of electrical and electronic equipment waste on the environment and human health For proper treatment recovery and recycling return the equipment marked with this symbol to your local supplier upon the purchase of equivalent new equipment or dispose of it in designated collection points For more information visit www recyclethis com Cont
10. heat LED and relay should come on If they don t come on make sure the status LED is not flashing twice indicating minimum off delay Wait until the LED stops flashing twice before proceeding 9 Press the Mode button on the WDU until Off Mode is displayed The heat LED and relay will turn off 10 Wait six minutes for the minimum off delay to expire The status LED will stop flashing twice 11 Press the Mode button on the WDU until Cool Mode is displayed 12 Press the setpoint Down button until the setpoint is below the current temperature The compressor and fan LEDs and relays should turn on 13 Press the Mode button on the WDU until Off Mode is displayed The cool LED and relay should turn off When you have successfully completed this process you have verified that the thermostat is working correctly 32 SmartCommand Thermostat Installation Manual Serial communication test Connect the thermostat to a PC via an RS232 485 converter to a PC serial com port Note Any RS232 to RS485 adapter used with SmartCommand serial thermostats must have automatic send data control To use Windows HyperTerminal do the following 1 Set up a direct connection session to the com port you will be using on the PC Configure port settings to 9600 baud 8 bit no parity 1 stop bit and no flow control Under the Settings tab go ASCII setup Set ASCII sending to Echo characters and No delays vd er Set ASCII receiving to Append line feeds an
11. how to operate the thermostat There is also information describing how to contact technical support if you have questions or concerns To use this document effectively you should have the following minimum qualifications e abasic knowledge of HVAC control components and e abasic knowledge of electrical wiring and low voltage electrical connections Read these instructions and all ancillary documentation entirely before installing or operating this product The most current versions of this and related documentation may be found on our website Refer to Online publication library on page 39 for instructions on accessing our online publication library Note A qualified service person complying with all applicable codes should perform all required hardware installation Conventions used in this document The following conventions are used in this document Bold Menu items and buttons Italic Emphasis of an instruction or point special terms File names path names windows panes tabs fields variables and other GUI elements Titles of books and various documents Blue italic Electronic version Hyperlinks to cross references related topics and URL addresses Monospace Text that displays on the computer screen Programming or coding sequences Safety terms and symbols These terms may appear in this manual A CAUTION Cautions identify conditions or practices that may result in damage
12. on page 12 Installer settings screen 17 The Installer settings screen is a hidden screen designed for installer use only Do not change any settings in this screen unless you are a qualified service technician Changing these settings will affect the operation of the heating cooling system To enter this screen go to the Main menu screen on page 7 and press and hold the two inner control buttons for three seconds until the Installer settings screen Figure 13 appears The Installer settings screen displays the current internal settings of the thermostat You can view and change the settings from this screen Scroll to the desired function and press Plus or Minus to change the value Figure 13 Installer settings screen Screen navigation buttons include Installer Settings gt Display Lock N Service Mode Network Settings MaxHeat SP 109 Done _ L_ __ select Done Plus Minus Select Done Return to the Main menu screen on page 7 Plus Increase value by 1 or change from N to Y Minus Decrease value by or change from Y to N Select Select menu item to go to a submenu Up Move selection pointer up Down Move selection pointer down Up Down 18 SmartCommand Thermostat Installation Manual Screen options include Display lock Y or N default N Use this setting to lock or unlock the thermostat wall display unit buttons When the buttons are locked Y you can still ac
13. screen press and hold the middle two control buttons on the WDU for five seconds until the nstaller settings screen on page 17 opens 3 Scroll down to the Network menu item in the Installer settings screen and press Select You can set the network address from 1 to 254 Note Network address 0 is reserved for the host system address and 255 is reserved for global commands 30 SmartCommand Thermostat Installation Manual RS485 protocol The thermostat has a robust serial protocol It is based on a simple ASCII message format as described in the Serial Communications Protocol manual DCN 150 00225 Note Not ol of the commands variables defined in the protocol document are applicable to the SmartCommand thermostat check Section 8 of the protocol manual for details Thermostat network commands Serial commands received by the control unit can set a new setpoint or a new mode and when received they are sent to the WDU to update its display The thermostat also responds to request for status by serial commands and can provide all thermostat data and setup information as well as the current revisions of the WDU and controller firmware The following thermostat information can be sent or requested from the thermostat by the serial protocol e Temperature e Heating setpoint e Cooling setpoint e System mode e Fan mode e F C mode e HVAC output status e Network address e Any system variable e System firmware revisions
14. there may be emergency heat EH wiring or both O and B changeover connections These wires are not used in the SmartCommand installation and in most cases these extra wires are not required for normal HVAC system operation See HVAC wiring for wiring diagrams for your type of HVAC system standard or heat pump 24 SmartCommand Thermostat Installation Manual HVAC system wiring Wiring will differ depending on if your system is a standard gas or electric system or if your system is a heat pump system Standard HVAC system wiring Figure 18 shows the wiring diagram for a standard gas or electric HVAC system Wiring colors are typical thermostat wiring color codes Note For typical central heating cooling systems leave jumper JP1 installed If you have separate heating and cooling system transformers cut jumper JP1 Wire RC to the cooling system transformer and RH to the heating system transformer Figure 18 Standard HVAC system wiring Thermostat control unit Standard HVAC system Thermostat connections ai C 24VAC common R 24VAC return W1 Heat stage 1 W2 Heat stage 2 G Fan Y1 Comp stage 1 OSDOGO Note Wire R to either RH or RC for common transformer HVAC systems 24V COM ae 24V RH Red RH 24V RC Red RC Ce W1 Heat 1 White W2 Heat 2 Orange e G Fan Green Y1 Comp 1 Yellow Y2 Camp 2 Black e e J4 ce HV
15. to the equipment or other property A WARNING Warnings identify conditions or practices that could result in equipment damage or serious personal injury SmartCommand Thermostat Installation Manual Product overview The SmartCommand thermostat model CC SCSTAT provides typical thermostat functions as well as the capability to send and receive information via serial communications This capability allows the thermostat s setpoint mode and fan operation to be changed remotely In addition the remote systems can request status of the thermostat s temperature setpoints modes and other system information The thermostat consists of two parts a wall display unit WDU and a HVAC control unit The wall display unit looks like a traditional thermostat and is the wall mounted user interface for the control unit It provides a display screen control buttons and the temperature sensor The wall display unit connects to the control unit by a four wire cable The control unit connects to the HVAC system in place of a standard thermostat and provides thermostatic control of the system In addition the control unit sends and receives data and commands via a twisted pair serial communication connection for remote control of the system The control unit can be used with up to three remote temperature sensors Wall display unit WDU The WDU has a backlit LCD graphical display capable of both text and graphics control buttons LEDs and
16. week F Set fan mode M Set system mode OT Set outside air temperature data for network supplied OT SC Set schedule control run hold mode SEd x Set schedule entry for day and entry SP Set setpoint for single setpoint system SPC Set cool setpoint SPH Set heat setpoint SVX Set variable number x Time Set time R 1 Request status message 1 Thermostat data temperature setpoints modes R 2 Request status message 2 HVAC operation data heating cooling fan status R 3 Request status message 3 Temperature data only R 4 Request status message 4 Setpoint data only R 5 Request status message 5 Mode data only R 6 Request status message 6 WDU Control unit model version data R 7 Request status message 7 Time and DOW R 8 Request status message 8 Not used R 9 Request status message 9 HVAC system setup data SW1 settings 38 SmartCommand Thermostat Installation Manual Network variables Table 4 shows the network variables for use with the system variable SVx command Table 4 Network variables Variable number Name Variable data Default value Notes 1 System type 0 1 0 0 gas electric 1 heat pump 2 Fan type 0 1 0 0 gas no fan w heat 1 electric 3 Changeover type 0 1 0 0 c o w cool 1 c o w heat 4 C F type 0 1 0 0 Centigrade 1 Fahrenheit 5 Network address 1 to 254 1 Reserved 0 host 255 global 9 Display lock 0 1 0 0 unlocked 1 locked
17. 096 available 24 hours a day Note Be ready at the equipment before calling for technical support Online publication library Another great resource for assistance with your GE Security products is our online publication library available to all of our customers on our website To access our publication library go to our website at the following location http www gesecurity com In the Tools area at the top click the Publication Library link After you register and log on you may search through our online library for the documentation you need 1 Many GE Security documents are provided as PDFs portable document format To read these documents you will need Adobe Acrobat Reader which can be downloaded free from Adobe s website at www adobe com 40 SmartCommand Thermostat Installation Manual
18. AC system Y2 Comp stage 2 25 For standard HVAC systems follow these guidelines Single stage systems Use W1 for heating stage 1 and Y1 for cooling stage 1 Two stage heating systems Use W1 for stage 1 and W2 for stage 2 heating Two stage cooling systems Use Y1 for stage 1 and Y2 for stage 2 cooling HVAC system 24 VAC transformer If you have an integrated heating and cooling system with a single transformer do not cut jumper JP1 Wire the 24V Return red wire to either RH or RC This is typical of most central systems If you have separate heating and cooling systems with separate transformers cut jumper JP1 Wire the heating 24V Return red wire to the control unit s RH terminal and run the cooling system s 24V Return red wire to the control unit s RC terminal Wire the cooling system s 24 VAC Com to the control unit s 24 VAC Com terminal Do not connect the heating system s common wire to the control unit DIP switches To set the SW1 DIP switches for standard HVAC systems do the following 1 Set SW1 1 position 1 to the Off STD position This is the default setting 2 Set SW1 2 position 2 to the correct fan setting for your HVAC system e For gas furnaces that do not require fan output for heating operations set SW 1 2 to the Off position to the left This is the default setting e For electric furnaces that do require fan output for heating operation set SW1 2 to On position to the rig
19. Down to decrease the setpoint one degree Pressing and holding a button down will cause the setpoint to continuously change until the button is released The setpoints can be set from 6 to 109 F or C unless limited in the installer settings You cannot lower the cooling setpoint below the heating setpoint The thermostat will push the heating setpoint lower if you try to lower the cooling below the heating setpoint It maintains a setpoint delta separation between heating and cooling setpoints The same is true for raising the heating setpoint above the cooling setpoint Again the thermostat will push the cooling setpoint up to maintain the setpoint delta separation Menu button The Menu button changes the screen display to the Main menu screen that shows other functions available on the thermostat These are dynamic and can change with the version of the thermostat you have but the standard ones include e Messages screen on page 8 e Schedule setup screen on page 9 e User settings screen on page 12 e Thermostat information screen on page 16 Mode button The Mode button controls the HVAC system mode The current mode selected is displayed above the button Pressing the Mode button will cause the mode and display to change to the next mode The mode cycles through the following modes with each press of the Mode button Off mode The system is off No heating or cooling will come on If it was on the system will turn off Heat mode O
20. SmartCommand Thermostat Installation Manual Copyright Disclaimer Trademarks and patents Intended use FCC compliance EMC directive X Copyright 2007 GE Security All rights reserved This document may not be copied in whole or in part or otherwise reproduced without prior written consent from GE Security except where specifically permitted under US and international copyright law Document number revision 1060018A July 2007 The information in this document is subject to change without notice GE Security GE assumes no responsibility for inaccuracies or omissions and specifically disclaims any liabilities losses or risks personal or otherwise incurred as a consequence directly or indirectly of the use or application of any of the contents of this document For the latest documentation contact your local supplier or visit us online at www gesecurity com This publication may contain examples of screen captures and reports used in daily operations Examples may include fictitious names of individuals and companies Any similarity to names and addresses of actual businesses or persons is entirely coincidental GE and the GE monogram are registered trademarks of General Electric Company Other trade names used in this document may be trademarks or registered trademarks of the manufacturers or vendors of the respective products Use this product only for the purpose it was designed for refer to the data sheet
21. The Thermostat control screen Figure 2 is the default display screen normally displayed on the WDU Figure 2 Thermostat control screen Clock Setpoint display Display 10 25AM Outside 60 Sus Off Up P LED Econ Display an Down No Msg MENU MODE FAN Menu Mode Fan Run Hold Temperature display The WDU will normally display the current temperature from the internal digital temperature sensor or a remote sensor The sensors have an accuracy of 1 F 0 5 C The WDU will display temperatures from 40 to 190 F 40 to 88 C If averaging remote sensors are attached the display will show the average temperature of all attached averaging sensors Setpoint display The heating and cooling setpoints are displayed next to the Up and Down buttons In heat mode the Up and Down buttons change the heat setpoint In cool mode they change the cooling setpoint When in auto mode the buttons change the last call s heating or cooling setpoint The setpoints will push each other if they are adjusted to within the minimum heat cool separation delta T setting This setting is default set to 4 degrees but can be changed in the installer settings Clock display The current time is displayed in the upper left corner of the main screen Set the clock from the User settings screen on page 12 Up and down buttons The Up and Down buttons adjust the setpoint temperature Press Up to increase the setpoint value by one degree and press
22. a digital temperature sensor The unit can display multiple screens In the default Thermostat control screen Figure 1 it shows the current temperature setpoints mode and manual fan mode time outside temperature and other information Figure 1 Wall display unit default screen WDU screen 10 25AM Qutside 60 Sus Off Up button LEDs Econ Rui Down button No Msg MENU MODE Control buttons Any changes in temperature or control button operations are transmitted to the control unit Updates are received from the control unit and displayed by the WDU WDU control buttons Both the four control buttons and the up and down buttons on the WDU change functions when you change screens The function of the buttons is defined by on screen labels that are dynamic and change when you change screens WDU LEDs The four LEDs on the WDU display various status information The LEDs have dynamic on screen labels that can change when you change screens WDU screens One of the unique features of the WDU graphical display is the ability to have multiple display screens In addition to a main Thermostat control screen menus and other control screens for special functions are provided This makes an intuitive and easy to use user interface and allows the many functions of the thermostat to be easily navigated The WDU screens include Thermostat control screen The Thermostat control screen on page 4 screen is the only screen needed fo
23. ay mode that you can select if you press and hold the Run button for three seconds In the away mode the setpoints are changed to preset temperatures 66 F heating and 80 F cooling LED display The Thermostat control screen has the following LED labels and descriptions numbered from top to bottom LED 1 green system operation display LED off SYS OFF displayed HVAC system is off LED off SYS MOT displayed Minimum off time MOT delay on is active LED on SYS ON displayed HVAC system is running LED on SYS MRT displayed Minimum run time MRT delay off is active LED 2 green system Economy mode display LED off or on Econ displayed Economy or first stage heating or cooling only LED on 2nd Stg displayed Stage two heating or cooling is active LED on 3rd Stg displayed Stage three heating is active LED on Vent displayed Fresh air venting is active LED 3 green Run Hold display shows state of schedule Run Hold mode LED off Run displayed Schedule is running LED on Hold displayed Schedule is off temperature setpoint hold in effect LED 4 red alert LED used for messaging and other system alerts LED off No msg displayed No text messages or alerts present LED on mail icon or alert text displayed Message waiting or specific alert text Communication error display If the WDU is not properly wired or if communication to the control unit is interrupted the LCD display will flash Comm Failure at the top center of
24. cess the Menu screen but you will not be allowed to select any menu options The nstaller settings screen hidden button operation is always operational allowing you to return to this screen and turn the display lock off Service mode submenu Y or N default N Use this setting to turn on the service mode When the service mode is on Y it sets the thermostat to a test mode with short delays All routine and staging delays are reduced to 15 seconds to speed up system checkout and testing A CAUTION The compressor short cycle protection is lost in this mode Network settings submenu Network address 1 to 254 default 1 Use this setting to set the serial communication network address 0 and 255 are reserved addresses Autosend Y or N default N Use this setting to turn on the autosend If autosend is on Y it sends a network message when there is a change in temperature setpoints and mode If autosend is off N it is in polled mode and only responds to polling requests Maximum heating setpoint 10 to 109 default 109 Set the maximum heating setpoint that is allowed Will not ramp or accept setpoints higher than this maximum Minimum cooling setpoint 6 to 110 default 6 Set the minimum cooling setpoint that is allowed Will not ramp or accept setpoints lower than this minimum Minimum run time 1 to 9 minutes default 6 Set the minimum run time before a heating cooling cycle can turn off Minimum off time
25. d Wrap lines Note Serial ASCII commands are case sensitive Verify serial communication by typing the following command sequence A 1 R 1 lt cr gt The Thermostat should reply with the R1 status message A 00 O 1 T xx SP xx SPC xx SPH xx M xx FM x If you have problems communicating check addresses and port settings HVAC system testing If you have difficulty with the HVAC system operation you can do the following test to verify the HVAC system is operational Thermostats like the SmartCommand thermostat are just switches to the HVAC system as shown in the Figure 20 This is a simplified example of a thermostat and a standard HVAC wiring diagram You can test the HVAC system operation by duplicating the thermostat switch operation by shorting across the thermostat terminals on the HVAC system Figure 20 HVAC system wiring example Typical thermostat HVAC system standard gas AC Thermostat connection C 24VAC common 24 VAC Note The HVAC system and thermostat connection voltage is 24 VAC This is a safe voltage to work with but be careful to avoid shorting the 24 VAC common C and 24 VAC return R terminals This may blow a fuse in the HVAC system 6 R 24 VAC hot Fan e canan Fan relay o W Heat Heat e Comp e Y Comp __ Gasvalve L L Comp relay 34 SmartCommand Thermostat Installation Manual Standard
26. d backlight display settings Thermostat information Access the Thermostat information screen on page 16 that displays the firmware versions of the WDU and control unit the HVAC system type and equipment options and the network address of the thermostat Screen navigation buttons include Done Return to Thermostat control screen on page 4 Select Select menu item at pointer Up Move selection pointer up Down Move selection pointer down SmartCommand Thermostat Installation Manual Messages screen The Messages screen Figure 4 allows you to retrieve text messages sent from the serial network to the thermostat The Messages screen features navigation buttons to read new and old messages and delete messages You can store up to 16 messages If more than 16 messages are received the oldest is erased to make room for the newest message Note New messages will turn on and flash the red message LED and mail icon in the main Thermostat control screen Viewing messages makes them old and turns off the indicators If you view some but not all new messages the new message notification LED and icon will stay on When you first select the Messages screen the most recently received message will be displayed as Message 1 If other messages are stored in memory you can recall and view or delete them by using the Messages screen navigation buttons Figure 4 Messages screen Messages Message 1 10 14 5 35PM The TR40 can receive 16 t
27. ect the heating system s common wire to the control unit 29 Serial communication Serial communication includes e RS485 com port e RS485 address e RS485 protocol e Thermostat network commands RS485 com port The thermostat has a RS485 serial com port This is a two wire plus ground half duplex communication network Typically the thermostat will be used on the SmartCommand network and connected to the Smart Command automation controller The RS485 com port communication setup is 9600 baud 8 data bits 1 stop bit and no parity Flow control is set to None Transmission delay The thermostat will delay responses to request messages for 5 msec to conform to the SmartCommand network protocol This is necessary for RS485 half duplex devices to use send data control for automatic flow control RS485 address You can check the network address setting of the thermostat by pressing Menu to open the main Menu screen Scroll down to the Thermostat info menu item and press Select The Thermostat information screen on page 16 will show the current network address of the thermostat The default network address is 1 Changing the network address The network address is set from the Installer settings screen on page 17 on the WDU This is a hidden menu and does not appear in the main Menu screen selections To change the network address do the following 1 Press Menu to open the Main menu screen on page 7 2 While in the Menu
28. ect this problem Control unit wiring Figure 21 shows the control unit wired to a wall display unit and the HVAC system Wire colors are typical thermostat wiring colors The fuse is a mini ATO 2 amp Note For heat pump HVAC systems the orange wire O is the changeover valve Figure 21 Control unit wiring Control unit sw1 Fuse HVAC system sto 1 EE ur Wall display unit S2 2 E JP1 OFF ON J1 WDU SE Gnd Q Cl sno Status o co piu 24V RH C 24VAC common 12VDC S CH 12v Heat 1 S Sau RC R d S E Clock c 8 E Data ICH S D Ge sg CH wi White CH W1 Heat stage 1 w2 0 Orange Fan z SE CH W2 0 Heat stage 4 Snp GND O O G Fan RS 485 Data LJ py Comp 1 Cu Yellow CH 1 Comp stage 1 y2 Black RS 485 Data CC Comp 2 CH Y2 Comp stage 2 J2 RS 485 J4 HVAC system HVAC system transformer Most central HVAC systems have a common heating and cooling transformer This is the factory default setting for jumper JP1 In some cases you may have separate heating and cooling systems each with their own transformer In that case cut jumper JP1 and wire the heating transformer red wire to the RH terminal and the cooling system transformer red wire to the RC terminal Wire the cooling system s 24 VAC Com to the control unit s 24 VAC Com terminal
29. ents NCL EE 1 Conventions used in this deent x c cce2 u serra EIERE EE Santas kama tebe see 1 Saretuitermsand SUMBOIS o5S2 e e adi htdadyadeeiutue El eg 1 Product Overview 5 oc cicite cosa csc cdatscheoeth EELER EES EELER dale ELSE EE 2 Wallidisplay Unit WDU os NN del Ae Et AAA EEN 2 Thermostat Control SCreen ivi cies ccd edie REENEN ecu gs Pee EE AER See ESR Cele Gee ee EE dE dae Ree 4 Temperature dis plisser EENS Nell die SE E 4 Setpoint diSPlGU NEE 4 Clock CUS BIG EE 4 Up and down ele e EE 5 K NN 5 Mode Butter ees sashes Se EE aaa erekaacneedyyee een EEE NOSAN EEEE 5 FON CITE 5 Elte ee 6 RRE RER 6 COMMUMNICAUON error display EE 6 Mainiimenuiscreen sccect oie ei vias det eoeseds den iree ved Hieghaodic cet beves debe E E NEEE 7 Messages SCIECN EE ebieaeau dedsed diledheedsuesd soncatinvag gauss 8 Schedule Setup Screen xi3 css cas ca Sided esos ee Mee NEE ata Ee di ga eeedus dein tea weds ees 9 Heat and c olschedule screen ee Eege E E Sted y EE eos 10 COPY SCheCUleSEhESN EE 11 User Settings SCHEER EE ELSE dE ERE ENE EREEREER EEEE ES 12 Set ClOCK SCF EE 13 Sensor calibration screen 14 Backlight display Screen siwcsvienas adiann beeen need EEE anton hada meena nodsadae DIETSE 15 Thermostat information screen 16 installer settings screen 3603003 cata awedeswe s Siac nine E E EE EEEE deg ENER ee ege 17 Installation OVErViEW 8 a 0505450006 n8as EELER REELLE EES EES EELER 20 Freeze PlOLE CHO EEN 21 Wall display unit ins
30. eturn to the User settings screen on page 12 Plus Increase the selected value Minus Decrease the selected value Select Select the function to be set Up Move selection pointer up Down Move selection pointer down 16 SmartCommand Thermostat Installation Manual Thermostat information screen The Thermostat information screen Figure 12 displays the current configuration of the thermostat wall display unit and the HVAC control unit This information is useful for quick check of firmware versions and HVAC system setup It also shows the network address setting Thermostat information displayed includes Wall display unit Model and firmware version number Control unit Model and firmware version number System type setting Standard or Heat Pump HP HVAC system Fan type setting for standard systems No fan with heat gas systems or fan with heat electric systems Changeover setting for heat pump systems Changeover with cool or changeover with heat Note You will see a Fan type setting for standard systems or a Changeover setting for HP systems Network address setting RS485 network address 1 to 254 default 1 Figure 12 Thermostat information screen Thermostat Info TS4OR Ver 3 07 6P HFRP Ver 03 05 2 System Type Standard Fan Type No Fan w HT Network Address 1 Bess Done Thermostat information screen has one navigation button the Done button Press Done to return to User settings screen
31. ext messages each up to 80 characters long They are date time stamped Done Delete Previous Next Screen navigation buttons include Done Return to main Main menu screen on page 7 Del Delete the message being displayed Prev Display previous messages Scroll up in the message stack Next Display the next message Scroll down in the message stack Schedule setup screen The Schedule setup screen allows you to review and set the setback schedule for the thermostat The thermostat has a 4 by 7 schedule Four times a day can be selected for heating and cooling setpoints Each day of the week can have a different schedule Groups of days can be copied with the same schedule When the thermostat is set to run mode the schedule will be executed daily with the setpoints being changed as per that day s schedule stored in the thermostat Hold mode stops the scheduled operation and holds the current setpoints until changed manually or by network commands The Schedule setup screen Figure 5 gives you the option of setting a custom setback schedule or the option to load one of two preset schedules Figure 5 Schedule setup screen Select Schedule Heat and Cool Up Preset Comfort Preset EnergyMiser Down Done Select Screen options include Heat and cool Change the individual day hour and setpoints for the heating and cooling schedule see Heat and cool schedule screen on page 10 Preset Comfort Load the co
32. ht 26 SmartCommand Thermostat Installation Manual Heat pump HVAC system wiring Figure 19 shows the wiring diagram for a heat pump HVAC system Wire colors are typical thermostat color codes Note Do not cut JP1 for heat pump systems RC and RH are common for heat pumps Figure 19 Heat pump HVAC system wiring Thermostat control unit Heat pump HVAC system Thermostat connections FUSE JP1 24C COM Blue 24V RH Red 24V RC W1 Heat 1 White W2 0 CO Orange Q G Fan Green Y1 Comp 1 Yellow C Y2 Camp 2 Black O J4 e e HVAC system GH C 24VAC common O R 24VAC return W1 Heat strips O Changeover valve G Fan Y1 Comp stage 1 Y2 Comp stage 2 27 For heat pump HVAC systems follow these guidelines Single stage compressor systems Use Y1 for stage 1 heating cooling and W1 for stage 2 heating heat strips Two stage compressor systems Use Y1 for stage 1 Y2 for stage 2 heating cooling and W1 for stage 3 heating heat strips DIP switches To set the SW1 DIP switches for standard HVAC systems do the following 1 Set SW1 1 position 1 to the On HP position to the right 2 Set SW1 2 position 2 to the correct changeover reversing valve setting for your HVAC system e For systems with changeover with cooling set SW1 2 to Off position to the left This is the default setting
33. ight display screen allows you to set the backlight on and off brightness levels and contrast Figure 11 Backlight display screen Backlite Display Backlite Timeout Up ON Level OFF Level Contrast Down Done Plus Minus Select Screen options include Backlight timeout Set the time after the last button press that the backlight will timeout and turn off You can adjust the time to 0 or from 20 to 40 seconds If set to 0 the backlight will never timeout and will always be on If set in the 20 to 40 second range the backlight will turn off after the selected time expires On level Set the brightness of the backlight when it is on You can adjust this setting in 10 steps 0 to 100 If set to 0 the backlight will never be on Typically this setting is set to 100 Off level Set the brightness of the backlight when off You can adjust this setting in 10 steps 0 to 100 If you do not want the backlight to go completely dark when off you can set an off brightness to something greater than 0 When you select an on or off brightness the display changes to that level for you to observe the brightness setting Contrast Set the contrast level of the LCD display You can adjust this setting from 0 to 10 Use this control to adjust the darkness of the display Too light and the display looks faded too dark and dark lines will appear in the display Typically 5 is the correct setting Screen navigation buttons include Done R
34. mfort schedule into the thermostat This is a preset schedule with mild setbacks Preset EnergyMiser Load the EnergyMiser schedule into the thermostat This is a preset schedule with deeper setbacks Screen navigation buttons include Done Return to Main menu screen on page 7 Select Select the schedule to view or modify Up Move selection pointer up Down Move selection pointer down 10 SmartCommand Thermostat Installation Manual Heat and cool schedule screen When you select the Heat and cool schedule menu item the Heat and cool schedule screen Figure 6 opens and the schedule for the current day will be displayed Use the scroll buttons to highlight the data to be modified Once the data has been highlighted use the Up and Down buttons to change the value of the data To copy a day s schedule to another day or group of days move the cursor to C on the bottom right of the screen When you highlight C the button below will change from Next to Copy Press this button to access the Copy schedule screen on page 11 Figure 6 Heat and cool schedule screen Monday Schedule Time Heat Cool Morn 600A 72 82 Up Day 9 00A 68 84 Eve 5 00P 74 76 Nite 10 00P 70 78 C Down done Ta IK Iwer Done Left Right Next Copy Screen navigation buttons include Done Return to the Main menu screen on page 7 Left Scroll back Right Scroll forward Next Copy When the button shows Next select the next day
35. nly heating operation will occur Cool mode Only cooling operation will occur Auto mode Heating or cooling will come on according to the heating and cooling setpoints The system will automatically switch between heating and cooling when the temperature exceeds the setpoints EH mode This mode is only displayed when Heat Pump HVAC system type is selected When there is a compressor failure with the heat pump system setting the mode to EH will allow the supplemental heat to come on whenever there is a heat call to provide heating It also disables the compressor outputs to prevent further damage to the system Fan button The Fan button controls the HVAC system s manual fan The current manual fan mode is displayed above the button Normally this button is in the Auto mode the system fan is automatically controlled by the HVAC system Pressing the Fan button once will turn the manual fan operation on Pressing it again will turn the manual fan off and return to the Auto mode Changes in the fan mode are sent to the control unit SmartCommand Thermostat Installation Manual Run Hold button The Run Hold button controls the automatic schedule operation In hold mode the current temperature is maintained until changed by manual or remote network command In the run mode the schedule loaded into the thermostat is activated and setpoints will change according to the schedule and the time and day of the week Away mode There is also an aw
36. nter down 13 Set clock screen The Set clock screen Figure 9 is a sub screen of the User settings screen The Set clock screen allows you to set the thermostat s internal clock To set the time and day do the following 1 Move the cursor with the navigation arrows until the data you want to change is highlighted 2 Press Up or Down to increase or decrease the value to the desired setting 3 Press Set to set the time and return to the main Menu screen or wait for the screen to timeout Note Ifthe clock has been reset by an extended power outage the clock display on the Thermostat control screen will be blinking Pressing Menu button will take you directly to this screen to set the clock Figure 9 Set clock screen Set Clock Time Bon pm Up Date 7 13 07 Day Thu Down sock Ta P jise Back Left Right Set Screen navigation buttons include Back Cancel and return to the User settings screen on page 12 Left Move the selection box backward Right Move the selection box forward Set Set the time and return to the User settings screen on page 12 Up Increase the selected value Down Decrease the selected value 14 SmartCommand Thermostat Installation Manual Sensor calibration screen The Sensor calibration screen Figure 10 is a sub screen of the User settings screen on page 12 The Sensor calibration screen allows you to change the temperature calibration for the internal and an
37. p of the WDU and rotate into the base Be sure pins engage in the connector correctly Wiring For new construction we recommend you use a two twisted pair cable 22 Ga minimum to the WDU from the control unit Category 5 wiring is preferred but not required In retrofit applications the existing 18 Ga thermostat wiring at least four wires is adequate and usually will work without problems However such nontwisted wiring can be subject to interference due to adjacent in wall high voltage wiring To wire the WDU to the control unit connect the four wire cable from the control unit to the WDU terminal block Two wires are for data and two are for power WDU power is 12 VDC and provided by the control unit A CAUTION Do not miswire the power and data lines damage will result Check your wiring before applying power Remote sensor connection The WDU base Figure 16 has a remote sensor connection J2 to connect an external remote temperature sensor Refer to the remote sensor documentation for the wiring diagram to connect the sensor to the WDU 23 Control unit installation Install the control unit in a protected convenient indoor location near the HVAC system or in a service accessible area such as an equipment closet or garage Mount the control unit in a vertical position on a wall or sturdy structural member If you mount the control unit on the HVAC system be careful to avoid the hot burner section and high vibration area
38. r basic thermostat operation All other screens will automatically timeout and return to this screen after 120 seconds of no activity Minimized thermostat screen The Thermostat control screen will go to a minimized screen after a 30 second timeout period This screen presents a simple uncluttered display of the current room temperature You can disable the Minimized screen if desired Note You can press any button when the Minimized screen is displayed to restore and display the Thermostat control screen Ment selection screen Press the Menu button on the Thermostat control screen to access the Main menu screen on page 7 This screen presents a list of the other functions or setup screens that you can select Messages screen The unit is capable of receiving messages from the RS485 network Messages received are displayed in the Messages screen on page 8 Schedule setup screen Use the Schedule setup screen on page 9 to setup and select schedules for the thermostat User settings screen Use the User settings screen on page 12 for the initial setup of the thermostat From this screen you can set the clock minimized screen timeout Fahrenheit or Centigrade selection sensor calibration and display settings Thermostat information screen This is a quick reference list of the thermostat firmware versions and setup See Thermostat information screen on page 16 SmartCommand Thermostat Installation Manual Thermostat control screen
39. s The control unit is connected to the HVAC system and to the WDU unit as well as the serial communication and power connections Control unit to WDU wiring Connect the WDU to the control unit with existing thermostat wiring in retrofit installations For new installations 22 24 Ga twisted pair typically CAT 3 or CAT 5 wiring is preferred Figure 17 Figure 17 Control unit to WDU wiring Wall display unit Control unit J1 GND GND 12 VDC Ol 12v Clock Q Clock Data CH Data A CAUTION Do not miswire the power and data lines damage will result Check your wiring before applying power Control unit to HVAC wiring Electrically the control unit looks like a standard thermostat to your HVAC system All connections to the HVAC system are made at the normal thermostat connections on the HVAC unit Refer to your HVAC system s documentation for specific information on its thermostat connections and set up requirements You will need to know the following HVAC system type Gas electric heat pump radiant or hydronic Fan requirement No fan with heat or fan with heat For heat pump system Changeover with cool or with heat O or B connection Retrofit wiring You may find that you have additional wires when you disconnect your old thermostat Usually these wires are for auxiliary functions such as filter or trouble indicators For heat pump systems
40. tallation 2 0 0 2 0 cece ccc eee n eee ene ee ee en eee eeeeeees 22 leie leie DEET 22 WIO BEE 22 Control unit installation EEN 23 Control anit to WDU WING 22s fea ENNEN ENEE NN NEE ERAN REENEN das 23 Control unit to AVAGAWINING TEE 23 Retrofit WIRING 2 Eeer E Eed 23 HVAC SUStEM WIEDER bg tege Ee ee Eed EE deeg ech EE EA 24 Standard HVAC SYSteM WIRING DEE 24 Heat pump HVAC system WITING2 REENEN SEENEN NENNEN dd dE SEELEN SE 26 Control Unit Conecto seiere kni cea Eet EE Aere A 28 Serial COMMUNICATION ssec scecr sc ee genres dh eaaagelerdaad Ger nacaaasaanaanauderens gaweden manages ce 29 SuSteMicChecklist c cscsdecccnecsdekd atied wet beiiennsed thao da wha AER 31 e Digg telen EE 31 iv SmartCommand Thermostat Installation Manual Serial COMMUNICGON TSE ss uaeaddakatandecd aden EEE A S E SEA MEE ewe de nAmeRseAeS 32 HVAC SYSTEM TESTING EE 33 COMTMOMUMIMEWINING Ss5 sai cota ba enasanukidenni decane Mba aayurdte oon d a eee aaa NS 35 Serial network command and variable let 37 NetWork COmmMmandsi gal Eege A Aa eh be ER heuer bendewadd in 37 NEtWOrK variables ereiaro a e ddd ahd dpactaaiihaa ada EAA adden 38 Contacting technical support 39 Online Publication libra G A naadiddcddeande sa vMowteumecdadsadade e 39 Preface This is the GE SmartCommand Thermostat Installation Manual for model CC SCSTAT This document includes an overview of the product and detailed instructions explaining e how to install and e
41. the Thermostat control screen where outside temperature is normally displayed Momentary display of communication failure caused by loss of data will clear automatically when data communication is restored If the communication failure display stays on check wiring or the control unit for problems Main menu screen The thermostat has a menu tree that can be accessed by pressing the Menu button on the main Thermostat control screen Various configurations of the unit can have different screen contents The first screen that will display is the Main menu screen Figure 3 This is a list of the other menus or functions that you can access Standard screens are listed in this manual your screen may vary with different configurations or revisions Figure 3 Main menu screen Menu Selection Messages Up Schedules User Settings Thermostat Info Down Done Select Screen options include Messages Access the Messages screen on page 8 A text messaging subsystem allows messages of up to 80 characters to be sent to the thermostat Messages received display when the message screen is selected The Messages menu item may or may not be displayed It can be enabled or disabled from the installer settings Schedules Access the Schedule setup screen on page 9 to set the programmable setback schedules of the thermostat User settings Access the User settings screen on page 12 to set the clock screen timeout F C mode sensor calibration an
42. thermostat for freeze protection In cold climates that require the heating system to be used for building freeze protection a mechanical backup freeze protection device must be installed on the heating system This can be a simple mechanical heating thermostat or a preset thermoswitch installed in the heated area Figure 15 Figure 15 Freeze protection Mechanical thermostat Heating system or thermoswitch 40 to 45 D Red wire E 24 VAC R W Heat W White wire Thermostat connections OOQ Wire across heater R W terminals 22 SmartCommand Thermostat Installation Manual Wall display unit installation Choose a location for the wall display unit WDU that best represents the temperature of the area to be controlled Avoid locations that are subject to drafts or areas with direct sunlight exposure Mounting To mount the WDU see Figure 16 and do the following 1 To open the WDU case pull from the lower corners of the case Figure 16 Opening and closing the WDU case Base Side view GND 12V Clock Data Wiring access hole 2 Route the wires to the WDU through the access hole in the back of the case see Wiring 3 Mount the WDU to the wall with the screws and anchors provided Be sure to plug any large access hole in the wall with sealer or insulation to prevent wall drafts from affecting WDU operation 4 To close the case hook the to
43. urns off at setpoint WDU settings submenu Messaging enable Y or N default N Enable Y or disable N the network messaging function If you intend to use the messaging capability of the thermostat you must enable it here by setting it to Y Messages will then appear as a menu item in the main Menu screen and you will be able to receive and browse through the messages CAUTION Do not change the installer settings unless you are sure of the effect these changes will make Changing the network address will make the thermostat not respond if the address is incorrect 19 20 SmartCommand Thermostat Installation Manual Installation overview Before you remove an existing thermostat and install the SmartCommand thermostat follow these guidelines e Record existing wiring information e Do the bench test e Check WDU wiring before applying power to the control unit e Be sure to install a freeze protection device as required Figure 14 shows the standard thermostat wiring versus retrofit applications Figure 14 Wiring overview 4 5 or 6 wires 18 Ga thermostat wiring Old system MN Heating and cooling system Replace existing thermostat Insert control unit with SmartCommand WDU into existing wiring 4 wires e New system Heating and cooling system SmartCommand WOU SmartCommand control unit 4 5 or 6 wires as original installation 21 Freeze protection A WARNING Do not use this
44. y external remote temperature sensors attached to the thermostat You can change the temperature calibration by 7 degrees When the Sensor calibration screen is selected it will show the internal and all detected remote sensors Each sensor found will show the current temperature and the current number of degrees of offset being applied In the screen n a indicates that the remote sensor is not attached To change the temperature calibration press Up or Down to select the internal or remote sensor Once selected press Plus or Minus to change the temperature calibration to the desired setting Press Refresh right blank button to update the information on this screen Note When you change a temperature calibration and exit this screen it may take a few seconds for the new temperature to be displayed on the Thermostat control screen on page 4 Figure 10 Sensor calibration screen Sensor Calibration Internal ec A Up Remote 1 n a O Remote 2 n a O Remote 3 n a O Down Done Plus Minus Refresh Screen navigation buttons include Done Return to the Main menu screen on page 7 Plus Increase the temperature by one degree Minus Decrease the temperature by one degree Refresh Blank button Refresh screen temperatures Up Move selection pointer up Down Move selection pointer down 15 Backlight display screen The Backlight display screen Figure 11 is a sub screen of the User settings screen The Backl
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