CEO-24-HC22 Series Owner's Manual - Installation and Operating Instructions Rev. 3.5 – 06.08 Pipersville, PA 18947 USA Phone: (215) 766-1487 - Fax: (215) 766-1493 Email: support@scillc.com - www.scillc.
Please read this manual carefully before installation and use.
Warning The CEO features advanced indication capabilities, and will notify you of your HVAC system condition. It is by no mean a replacement for your alarm systems of your house and business facilities. The company will not be responsible for any loss or damage that may result if the CEO fails to indicate any alarm condition. 1. Options and Accessories Options • Programmable or non-programmable: to select, press one button and the program will remain in memory (No need to reset it again).
2. Installation Instructions A. Separate the front panel from back panel by depressing the two tongues located in the bottom and in the left of the unit. B. Gently disconnect the quick connector on the back panel. Spring Tongue 2 Spring tongue 1 D. Insert screws so they extend approx. 3/16" (3 mm) from wall or surface. Front plate Screw 1 C. Line the back panel up against the wall or flat surface on to which it is to be mounted and drill in the appropriate fixing holes. Quick connector Screw 2 E.
3. Wiring Connections 3.1 Phone line - wiring diagram. The CEO-24 thermostat has a telephone line connection, exactly like an answering machine or a modem, and is connected in the same way. The thermostat has 2 telephone line outputs (TEL,TEL), where polarity is irrelevant.
3.2 Connections for all applications Note: Be advised that the turn on time for the LCD to light up is up to 10 seconds from the time 24VAC is applied.
3.3 Connections of heat outputs The CEO-24 thermostat has can be connected to two types of heating systems: Connection to 24VAC Heat Element JP1 on base plate must be moved to “3” position. Connection to 2-wire Millivolt system (dry contact) JP1 on base plate must be moved to “1” position.
IMPORTANT! Before making any changes to the jumpers disconnect electricity to the main board. 4. Hardware jumpers Configuration 4.1 The Jumpers are located as shown in the picture: Front plate 3 Base plate JP1 1 JP4 JP3 JP7 JP6 JP5 JP1 B A Note: In some revisions, JP3 is located on top of JP4.
Front plate – jumper configuration: Jumper No. JP1 JP3 JP4 Function Position Default Internal Sensor Control “B” Position X External sensor control “A” Position 4 minutes delay for compressor Open No delay Short Clock mode – 24 hours Open Clock mode – 12 hours (AM/PM) Short JP5 JP6 JP7 X X NOT IN USE “OUT,OUT” outputs not active Open “OUT,OUT” outputs active Short X Heat mode - Electric Open X Heat mode - Oil/Gas Short Base plate – jumper configuration: Jumper No.
5. Operating Manual 5.1 Turn the thermostat On or Off • Press the On/Off button to activate the thermostat – SET ON/STBY ALARM The Green LED will turn on. ON/OFF • Press and hold the On/Off button (5 seconds) to turn the thermostat off – The Green LED will turn off.
5.2 Real time clock and day • Press the Clock button – the hours will flash. • Adjust the hours using the “+” and “-” buttons (set buttons). • Press the Clock button again – the minutes will flash. • Adjust the minutes using the “+” and “-” buttons. • Press the Clock button again – the day of the week will flash. • Set the day of the week using the “+” and “-” buttons. • Press the Clock button again to return to normal display mode.
5.4 Set temperature Set temperature in Cool and Heat modes. • Press the “+” or “-” buttons - set temperature will flash. • Adjust the set temperature using the “+” or “-” buttons. • Wait until display returns to normal mode. Set temperature in auto change-over mode. • Press the “+” or “-” buttons – “COOL” and set temperature for cooling will flash. • Adjust the set temperature for cooling using the “+” or “-” buttons. • Wait 3 seconds – “HEAT” and set temperature for heating will flash.
In auto change-over mode – a solid non-flashing “|” sign will appear next to the mode to indicate that the current displayed set-point temperature is of that mode. A flashing “|” sign next to the mode will appear during demand for cool or heat. Display of set-point temperature for heat SET Heating mode active TEMP HEAT COOL SET TEMP HEAT COOL Display of set-point temperature for cool SET Cooling mode active TEMP HEAT COOL SET TEMP HEAT COOL 5.
will stop the fan (the Fan will NEVER turn on). 6. Programming The thermostat is 5-1-1 weekly programmable, meaning; Weekdays - Monday through Friday / Saturday / Sunday have individual programs. There are four different program events per day.
6.1. Setting the Program Pressing the Prog button does all Programming selections • Press the Prog Button - the hour and minute will flash. This shows that you are entering the Prog mode.
• Press the Prog button again - the minutes on display will flash. • Adjust the minute using the ‘+’ and ‘-‘ buttons. Alarm Limits Prog Clk Select Mode Auto Reset Fan • Press the Prog button again - heat and temperature on display will flash. • Adjust the set temperature for heating using the ‘+’ and ‘-‘ buttons.
• Press the Prog button again - cool and temperature will flash. • Adjust the set temperature for cooling using the ‘+’ and ‘-‘ buttons. The controller keeps a safe differential of at least 1 degree between Heat set and Cool set (Heat is always less than Cool). Alarm Limits Prog Clk Select Mode Auto Reset Fan For C: • To set the time and temperature for the other programs repeat the steps above. • Press the Prog button again to return to normal display.
6.2. Weekly Program Mode and Manual Mode. You can change between weekly program and Manual program, by pressing and holding (3 seconds) the Prog button in normal display. When the weekly program is activated, the clock symbol and the word “Program”, (in brackets) will be displayed. The clock symbol and Program, in brackets, will not be displayed in Manual Mode. 6.3.
8. Economy Mode Economy mode overrides the set point temperature and uses set economy temperatures for heat and cool when you leave home or office for any period of time - vacation, unexpected event - and the system will work in economy mode. (To set temperature for economy mode See # 12.6) 8.1 Set the thermostat to work in Economy Mode. • Switch on the thermostat • Press and hold the Auto Fan button (10 sec.) until the buzzer "beeps" – ‘EC’ (Economy) will appear on display.
9. Alarm Conditions (Red LED) Alarm type Red LED indication Thermostat operation temperatures goes higher or lower than the alarm limits set by the technician Flashes slowly The “AL,AL” outputs will be activated Fault input from system (24Vac) Solid light The “AL,AL” outputs will be activated Alarm input through “IN,0” (N.O. dry contact) -optional Flashes rapidly Tel. voice response “You have an alarm condition.
10. General Purpose Output – "OUT, OUT" Normally open, dry contact, general purpose output that can be activated manually or by phone command. The output can be connected to a boiler, or other consumer, and can be activated remotely using phone command when you are NOT in the house. The output can be controlled using 3 commands: A. Turn the output ON. B. Turn the output OFF. C. Activate the output for a set number of hours. 10.1 Manual Operation of the output.
11. Thermostat Reset The hidden button on the bottom left side of the thermostat can be used to: 11.1 Reset the thermostat to its default settings. Press and hold the “+” button. Simultaneously, press and release the hidden button. Release the “+” button. 11.2 Return the thermostat to its previous state. 22 Press and release the hidden button.
12. Technician settings These settings allow the user to change the following: • High temperature alarm. • Low temperature alarm. • Set-point for cool in economy mode. • Set-point for heat in economy mode. 12.1 Enter code for technician • Press the Alarm Limit button - ‘C50’ will appear on display. • The code is 55. • Enter the code using the ‘+’ and ‘-‘buttons.
12.4 Set High temperature alarm - HA: • Press the Alarm Limit button again - the LCD will show "HA ##" (Where "##" stands for high alarm limit – two digits). • Adjust the temperature using the ‘+’ and ‘-‘ buttons. (From 34°F-99°F or 2°C-38°C - default=98°F or 36°C) so when the ambient temperature reaches the High Temperature limit, the alarm activates. • Press the Alarm Limit button again. 12.
12.6 Set Economy mode - cooling: • Press again to set Economy Mode for cooling - the LCD will show "EC ##" and "COOL" (Where "##" stands for set-point temperature for cool in economy mode – two digits) (From 36°F-99°F or 4°C-38°C - default=77°F or 25°C). 12.7 Set Economy mode - Heating: • Press again and set Economy Mode for heating - the LCD will show "EC ##" and "HEAT" (Where "##" stands for set-point temperature for heat in economy mode – two digits) (From 35°F-98°F or 3°C-37°C - default=60°F or 15°C).
14. Telephone settings The CEO-24 will call the user when one of the following occurs: • The ambient temperature goes above the High Temperature limit • The ambient temperature goes below the Low Temperature limit • Fault input from system (24Vac) • Alarm input* through “IN,0” (optional) *The connection to the dry contact “IN,0” can be from any system determined by the user, for example; home alarm system, occupancy sensor, equipment fault.
Setting the Thermostat Response to Incoming Calls • Press the Select button again – "TAD0" appears on LCD. • Choose between "TAD 0" and "TAD 1" using the ‘+’ and ‘-‘ buttons. ‘TAD 0’ = The thermostat will answer an incoming call immediately. ‘TAD 1’ = The thermostat will answer an incoming call after a preset number of rings. This feature allows the unit to be connected to the same phone line as another device, such as: answering machine, fax, etc.
E.g. Number rings for answering machine is 4. Number rings for the CEO-24 is 5. Follow these steps: 1. Set the ring setting to 6 rings (see below). 2. Call the CEO-24. 3. Let the telephone ring 3 times and hang up. 4. Wait for 4-5 seconds, and call again 5. The CEO-24 will answer after the second ring on the second call, before any other device. To set the number of rings for the CEO-24: • Press the Select button again – "Fn 02" will be displayed.
Programming Telephone Numbers The CEO-24 can be programmed with up to 3 different telephone numbers (up to 16 digits each). Each of these numbers will be called by the thermostat twice, in case there is no answer or the password is not entered. This process will repeat itself every 2 minutes, until the call is answered. Follow the steps below to program the telephone numbers: Press the Select button again – 'n1' will be displayed. • This is the first telephone number that the thermostat will call.
15. Menu of commands from a telephone to the thermostat • Enter your password: 1•2•3•4•# (factory default - or any other code you have chosen 4 numbers only) You will hear the status of the system: Turn air conditioner ON 1 2 3 4 5 6 7 8 9 * 0 1 2 3 4 5 6 7 8 9 * 0 1 2 3 4 5 6 7 8 9 * 0 a. Temperature in the room is... b. System is now… (ON or OFF) c. Mode is now… (Cool, heat, fan, auto change over)… d. Set cooling temperature is... e. Set heating temperature is... f.
16. Troubleshooting for Technician Problem Solution The display does not light The unit is not getting 24Vac - Check the wiring connections, R (Phase), C(common). The temperature sensor is sensing an OPEN CIRCUIT. Temperature in the room (display) dropped to 0°F Temperature in the room (display) rises to 99°F The temperature sensor is sensing a SHORT CIRCUIT. The unit does not respond to buttons and "EC" appears in the display The unit is in Economy Mode.
