Related Manuals for SCI CEO-24-HC22 Series
Summary of Contents for SCI CEO-24-HC22 Series
- Page 1 CEO-24-HC22 Series Owner's Manual - Installation and Operating Instructions Pipersville, PA 18947 USA Phone: (215) 766-1487 - Fax: (215) 766-1493 Email: support@scillc.com - www.scillc.com Rev. 3.5 – 06.08...
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Page 2: Table Of Contents
Please read this manual carefully before installation and use. Index Options and Accessories Installation Instructions Wiring Connections Hardware Jumpers Configuration Operating Manual Programming Override set temperature Economy Mode (Set Back Mode) Alarm Conditions (red LED light) General purpose output - "OUT, OUT" Thermostat Reset Technician Settings Connection of External sensor... -
Page 3: Options And Accessories
Two temperature sensors in a decorative box (for averaging) - Part No. RS02 • Duct temperature sensor - Part No. DT02. For details on where to purchase accessories, please contact SCI for your nearest location or visit web site as www.scillc.com... -
Page 4: Installation Instructions
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 Spring panel. Tongue C. Line the back panel up against the wall or flat surface Spring tongue on to which it is to be mounted and drill in the... -
Page 5: Wiring Connections
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. Connection to low voltage wires a regular... - Page 6 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.
- Page 7 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”...
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Page 8: Hardware Jumpers Configuration
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: Base plate Front plate Note: In some revisions, JP3 is located on top of JP4. - Page 9 Front plate – jumper configuration: Jumper No. Function Position Default Internal Sensor Control “B” Position 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 NOT IN USE “OUT,OUT”...
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Page 10: Operating Manual
5. Operating Manual 5.1 Turn the thermostat On or Off • ON/STBY Press the On/Off button to activate the thermostat – ALARM The Green LED will turn on. ON/OFF • Press and hold the On/Off button (5 seconds) to turn the thermostat off –... - Page 11 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. •...
- Page 12 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.
- Page 13 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 Heating mode active TEMP...
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Page 14: Programming
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. Program Display... - Page 15 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. Alarm Limits Prog Clk Select Mode Auto Reset Period of program Program Number...
- Page 16 • 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 • Press the Prog button again - heat and temperature on display will flash. •...
- Page 17 • 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...
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Page 18: Override Set Temperature
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. -
Page 19: Economy Mode (Set Back Mode)
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. -
Page 20: Alarm Conditions (Red Led Light)
9. Alarm Conditions (Red LED) Red LED Thermostat Tel. voice Reset button Alarm type indication operation response operation “You have an temperatures alarm goes higher or The “AL,AL” Flashes condition. lower than the outputs will None slowly Temperature alarm limits set be activated in the room by the technician... -
Page 21: General Purpose Output - "Out, Out
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: Turn the output ON. -
Page 22: Thermostat Reset
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. -
Page 23: Technician Settings
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. •... - Page 24 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.
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Page 25: Connection Of External Sensor
"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). 13. Connection of External Sensor Important! The external sensor must be SCI type. N.TC. Sensor: Temperature ~ Resistance Characteristics Temp °C 10.0... -
Page 26: Telephone Settings
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) •... - Page 27 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’...
- Page 28 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.
- Page 29 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.
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Page 30: Menu Of Commands From Telephone To Thermostat
15. Menu of commands from a telephone to the thermostat • Enter your password: 1•2•3•4•# Turn air conditioner ON (factory default - or any other code you 1 2 3 1 2 3 1 2 3 4 5 6 4 5 6 have chosen 4 numbers only) 4 5 6 7 8 9... -
Page 32: Troubleshooting For Technician
16. Troubleshooting for Technician Problem Solution The unit is not getting 24Vac - Check the wiring The display does not light connections, R (Phase), C(common). The temperature sensor is sensing an OPEN CIRCUIT. Temperature in the room (display) dropped to 0°F Replace the jumper JMP1.