SCI CEO-24-HC22 Series Owner'S Manual Download | Manualshive

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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.

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Summary of Contents for CEO-24-HC22 Series

Page 1: ...Owner s Manual Installation and Operating Instructions CEO 24 HC22 Series Rev 3 5 06 08 Pipersville PA 18947 USA Phone 215 766 1487 Fax 215 766 1493 Email support scillc com www scillc com ...

Page 2: ...mpers Configuration 4 Operating Manual 5 Programming 6 Override set temperature 7 Economy Mode Set Back Mode 8 Alarm Conditions red LED light 9 General purpose output OUT OUT 10 Thermostat Reset 11 Technician Settings 12 Connection of External sensor 13 Telephone Settings 14 Menu of Commands from Telephone to Thermostat 15 Troubleshooting for Technician 16 ...

Page 3: ...mperature Sensor return air or wall mounted High and Low Temperature Alarm Dry contact indicated by red LED Scale in Fahrenheit or Celsius must be specified at time of order Individual cooling and heating set points Fault indication 24Vac indicated by red LED Accessories Back Plate 6 L x 4 W x 0 37 H Part No WP2 Wide Back Plate 6 L x 6 W x 0 37 H Part No WP3 Temperature Sensor with 30 inches lead ...

Page 4: ...rews so they extend approx 3 16 3 mm from wall or surface E Align the back panel against these screws pushing it forward allowing it to slide downwards to lock into position F Make electrical connections to terminals on the back panel as shown on enclosed electrical wiring diagram G Reconnect the quick connector into the back panel H Re assemble front and back cover Connect at top first then at bo...

Page 5: ...ension not supplied with thermostat phone jack to wires converter not supplied back of thermostat telephone jack wall mounted low voltage wires not supplied with thermostat J2 J3 normal telephone extension not supplied with thermostat back of thermostat Micro filter connected to a telephone jack wall mounted low voltage wires not supplied with thermostat DSL PHONE DSL Internet phone jack to wires ...

Page 6: ...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: ... 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 ...

Page 8: ... 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 JP1 A B JP5 JP6 JP7 JP3 JP4 JP1 3 1 ...

Page 9: ... Short Clock mode 24 hours Open JP4 Clock mode 12 hours AM PM Short X JP5 NOT IN USE OUT OUT outputs not active Open JP6 OUT OUT outputs active Short X Heat mode Electric Open X JP7 Heat mode Oil Gas Short Base plate jumper configuration Jumper No Function Position Default 24Vac to W1 output 3 Position X JP1 The W1 and MIL outputs are used to connect 2 wire Millivolt system dry contact 1 Position ...

Page 10: ...Off Press the On Off button to activate the thermostat The Green LED will turn on Press and hold the On Off button 5 seconds to turn the thermostat off The Green LED will turn off ON STBY ALARM ON OFF SET PROG CLOCKSELECT MODE AUTO FAN ALARM LIMITS RESET ...

Page 11: ...he 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 3 Selecting modes Press the Mode button to switch between the four modes Cool COOL appears on display Heat HEAT appears on display Cool heat auto change over both COOL and HEAT appear on display Fan only both COOL and HEAT disappear from display Adjust Clock Settings Hou...

Page 12: ...e set temperature for cooling using the or buttons Wait 3 seconds HEAT and set temperature for heating will flash Adjust the set temperature for heating using the or buttons Wait until display returns to normal mode In auto change over mode the thermostat has 2 different set points one for cool and one for heat The set temperature for heat must be at least 1 degree LESS than the set temperature fo...

Page 13: ...OOL HEAT TEMP SET COOL HEAT Display of set point temperature for heat Display of set point temperature for cool TEMP SET COOL HEAT TEMP SET COOL HEAT Heating mode active Cooling mode active 5 5 Selecting fan auto fan Press the Auto Fan button to switch between FAN ON The fan will work continuously Auto Fan The fan will work according to cooling heating demand AUTO FAN appears on display In Oil Gas...

Page 14: ... 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: ...et Fan Alarm Limits 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 Period of program Program Number ...

Page 16: ...st the minute using the and buttons Press the Prog button again heat and temperature on display will flash Adjust the set temperature for heating using the and buttons Prog Clk Select Mode Auto Reset Fan Alarm Limits Prog Clk Select Mode Auto Reset Fan Alarm Limits For C ...

Page 17: ...buttons The controller keeps a safe differential of at least 1 degree between Heat set and Cool set Heat is always less than Cool To set the time and temperature for the other programs repeat the steps above Press the Prog button again to return to normal display Prog Clk Select Mode Auto Reset Fan Alarm Limits For C ...

Page 18: ...ymbol and Program in brackets will not be displayed in Manual Mode 6 3 Review the Program You can review the program or change part by entering into the program mode and step quickly through by pressing Clock button 7 Override Set Temperature At anytime you can change the temperature by pressing the and buttons The new temperature will be retained until the next program start If the thermostat was...

Page 19: ...omy will appear on display When returning home office Press and hold 10 sec the Auto Fan button until the buzzer beeps and the set temperature returns to normal In Economy Mode none of the buttons function except for the Auto Fan button The green LED will light to show that the thermostat is working but the system may be turned off because there is no demand for Heating or Cooling The Economy Mode...

Page 20: ...ted You have an alarm condition 1 Press and hold the Reset button to stop the AL AL output Alarm input through IN 0 N O dry contact optional Flashes rapidly You have an alarm condition 2 The alarm works whether the thermostat is On or Off Warnings 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 system...

Page 21: ...he output for a set number of hours 10 1 Manual Operation of the output Press the Select button several times until t will appear on display where stands for number of hours two digits Using the or buttons adjust the number of hours for the output to be ON starting from present time range 01 23 hours Set the number to 00 to turn the output OFF Set the number to 24 to turn the output ON without tim...

Page 22: ...e 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 Press and release the hidden button ...

Page 23: ...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 ...

Page 24: ...emperature reaches the High Temperature limit the alarm activates Press the Alarm Limit button again 12 5 Set Low temperature alarm LA Press the Alarm Limit again the LCD will show LA Where stands for low alarm limit two digits Adjust the temperature using the and buttons From 33 F 98 F or 1 C 37 C default 35 F or 5 C The unit will not allow you to set the Low Temperature limit higher than the Hig...

Page 25: ...r 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 7 2 10 0 12 8 15 6 18 3 21 1 23 9 26 7 29 4 32 2 Temp F 45 50 55 60 65 70 75 80 85 90 Res k 115 8 100 9 88 1 77 1 67 7 59 6 52 5 46 4 41 2 36 6 Disconnect...

Page 26: ...d by the user for example home alarm system occupancy sensor equipment fault Choosing a Password Press the Select button A four 4 digit password will appear 1 2 3 4 Default from factory Select a code number which is easy to remember four digits Set the first number using the and buttons Press the Select button again to change the second number Set the second number using the and buttons Change the...

Page 27: ...device such as answering machine fax etc Selecting TAD1 does not affect the calling out feature of the CEO 24 However when making incoming call TO the thermostat the following must be noted If TAD1 is selected You must call the thermostat twice First you must know the set number rings of the other device connected The number of rings of the thermostat must be more than the number rings of the othe...

Page 28: ... 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 This is the set number of rings after which the CEO 24 should answer For the example above FN should be set to 05 If no device other than the thermostat is connected to the phone line then the number of set rings for the CEO 24 should be at least 6 This will ensu...

Page 29: ...ton the number 5 will be displayed Using the or buttons select the first digit of the telephone number Press the Select button again to switch to the second digit Using the or buttons select the second digit of the telephone number Repeat this sequence until the full number is entered Press the Select button twice to switch to the second telephone number n2 Repeat the steps above to the second and...

Page 30: ...fan auto change over d Set cooling temperature is e Set heating temperature is f Please enter your desired command see list of commands on the next page At the end of each session press 9 to save the new commands The OUT OUT output can be remotely operated only when JP6 is shorted see jumper configuration Otherwise you ll receive an error message You have entered an incorrect command 1 2 3 4 5 6 7...

Page 31: ...31 ...

Page 32: ...er JMP1 If the temperature returns to normal there is a problem with the external sensor 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 To return to normal mode see 8 In heat mode unit sends cool air The Auto Fan is not ON TEL appears on the display The th...

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