SC 5811 2 Heat/2 Cool Auto Changeover Hardwire Programmable Electronic Thermostat • • • • • • • • • • 7-Day, 5-2-Day or 5-1-1-Day Programmable Configurable 2-Stage Heat/2-Stage Cool Systems 2-Stage Heat Pump Systems Large Display With Backlight Selectable Fahrenheit or Celsius Compatible with Gas, Oil, or Electric SimpleSet™ Field Programming Status Indicator Light Relay Outputs (minimum voltage drop in thermostat) • Remote Sensor Compatible • Ideally Suited for: – Residential (New Construction/Replacem
Table of Contents Parts Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Icon Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Specifications. . . . . . . . . . . .
Parts Diagram Up button Down button FP RESET S1 S2 R C W Y1 W2 Y2 G O/B Right (fan) button CONFIG Left (system) button Field programming pins Configuration switch Reset switch
Icon Descriptions Room temperature offset activated Fan operation icon Lock mode activated Cooling operation icon Heating operation icon Specifications Electrical rating: • 24 VAC (18-30 VAC) • 1 amp maximum per terminal • 3 amp maximum total load Temperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.
Important Safety Information WARNING!: Always turn off power at the main power supply before installing, cleaning, or removing thermostat.
To Install Thermostat ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing thermostat. IMPORTANT: Thermostat installation must conform to local and national building and electrical codes and ordinances. Note: Mount the thermostat about five feet above the floor.
Wiring Diagrams Heat/Cool Systems Transformer 120 VAC Optional remote or outdoor sensor 24 VAC Heat #1 Cool #1 Heat #2 Cool #2 Fan * outdoor sensor only reads outdoor temperature
Single Compressor Dual Compressor heat pump with electric backup heat pump with electric backup Transformer 120 VAC Optional remote or outdoor sensor Transformer 120 VAC 24 VAC Optional remote or outdoor sensor 24 VAC Reversing Valve Reversing Valve Compressor Compressor #1 Auxiliary Heat #1 Emergency Heat Compressor #2 Fan * outdoor sensor only reads outdoor temperature Fan
Remote Sensor Installation (Optional) 1. 2. 3. 4. Remove cover from remote sensor housing. Select an appropriate location for mounting the remote sensor. Mount remote sensor unit using hardware provided. Install two strand shielded wire between remote sensor and thermostat. Shielded wire must be used. Do not run remote sensor wire in conduit with other wires.
Terminal Designator Descriptions R – 24 VAC hot C – 24 VAC common W1/O/B – Configurable W1 – 1st stage heat for non-heat pump systems O – cool active reversing valve B – heat active reversing valve Y1 – 1st stage cool, 1st stage heat for heat pumps W2 – 2nd stage heat for non-heat pump systems, emergency heat for heat pump systems Y2 – 2nd stage cool for 2 compressor systems, 2nd stage heat for 2 compressor heat pump systems G – Fan SC5811 Output Chart 1ST Cool 2ND Cool 1ST Heat 2ND Heat Heat/Cool Y1,
Configuration Mode The configuration mode is used to set the SC5811 to match your heating/cooling system. The SC5811 functions with heat pump, air conditioning, gas, oil or electric heat systems. To configure the SC5811, perform the following steps: 1. Verify the SC5811 is in the OFF mode. Press the SYS (left) button until off mode displays. 2. Remove the cover of the thermostat by gently pulling near one of the corners at the top of the thermostat. PM OFF 3.
Configuration Mode Settings The setup screens for Configuration Mode are as follows: 1. Temperature Scale (F or C) Choose Fahrenheit or Celsius. Press the up or down button to select. Press the right button to advance to the next screen. 2. 1st Stage Temperature Differential (1°F to 5°F) (0.5°C to 2.5°C) Set the number of degrees between your “setpoint” temperature and your “turn on” temperature. Press the up or down button to set differential value. Press the right button to advance to the next screen. 3.
4. Staged Off Outputs Select whether the outputs for heating and cooling are staged off independently or are satisfied simultaneously. 1 = outputs staged off independently 0 = outputs off simultaneously Press the up or down button to set. Press the right button to advance to the next screen. 5. Minimum Deadband (1°F to 9°F) (1°C to 5°C) Set the minimum separation between heat setpoint and cool setpoint in Auto Changeover Mode. Press the up or down button to set deadband value.
6. System – Set for heat pump, non-heat pump, reversing valve operation and number of compressors in your system. Choose Heat Pump Non-Heat Pump System Reversing Valve Active Number of Compressors or Compressor Stages HP O 1 HP b 1 HP O 2 HP b 2 Heat Gas Heat Electric Press the up or down button to select. Press the right button to advance to the next screen.
7. Auxiliary Delay ON – (0-30 minutes) – Set the delay time in minutes for auxiliary heat to be locked out after a call for second stage. This extra savings feature is used to temporarily lock out auxiliary heat devices, allowing just heat pump to try to satisfy heat call. Press the up or down button to select. Press the right button to advance to the next screen. 8.
11. Room Temperature Offset (+9°F to -9°F) (+4.5°C to -4.5°C) Adjust to calibrate displayed room temperature to match actual room temperature. Note: When not set to 0, will display. Press the up or down button to select. Press the right button to advance to the next screen. 12. Maximum Cycles Allowed Per Hour (- -, 2-6) - - = as many as needed, 2-6 = maximum cycles/hour Press the up or down button to select. Press the right button to advance to the next screen. 13. Temperature Sensor (1-4) 1.
14. Cooling Fan Delay Off Time (0, 30, 60, 90 seconds) Select the fan purge time for cooling. Press the up or down button to select. Press the right button to advance to the next screen. OFF 15. Status Indicator Light (Led 0, 1, 2) 0 = Status indicator never on 1 = Status indicator on with first stage 2 = Status indicator on with second stage Press the up or down button to select. Press the CONFIG button for 2 seconds to exit configuration.
Mode of Operation The SC5811 is a programmable, manual or auto changeover, 2-stage heat, 2-stage cool thermostat. It functions with air conditioning, heat pumps, gas, oil or electric heat systems. An outdoor sensor can be used to monitor the outdoor temperature. The thermostat activates the heating appliance when the room temperature is below the set heat temperature (by the differential temperature) and the red indicator light (configurable) on the thermostat will light.
Button Functions Up button Down button FAN (right) SYStem (left) PROG UP Used to increase the time, set temperatures and to adjust configuration settings. DOWN Used to decrease the time, set temperatures and to adjust configuration settings. SYS (left) Used to change from OFF, HEAT, COOL and AUTO changeover modes FAN (right) Used to turn on and off the indoor fan. PROG (SYS and FAN) Used to change from program operation to manual operation.
Operating Modes There are five possible operating modes for the SC5811. Off, Cool, Heat, and Cool & Heat modes are accessed by pressing the SYS (left) button. Program mode is accessed by pressing the SYS (left) and FAN (right) buttons simultaneously. OFF Mode • In this mode, the thermostat will not turn on the heating or cooling devices Note: The indoor fan can be turned on manually in every operating mode by pressing the FAN (right) button.
Emergency Heat Mode (Heat pump systems only) • In emergency heat mode, the heat pump system will be disabled and auxiliary heat will become the primary source of heat. Cool Mode • In this mode, the thermostat controls the cooling system. When the cooling outputs, the snowflake icon apprears on the display. Note: There is a four minute delay for your compressor to restart after it has turned off. To bypass the compressor time delay, go to OFF mode for 5 seconds.
Program Mode • In this mode, the program function is on (PROG displays), and the thermostat will automatically be controlled by the set program schedule. Program mode can function with heat mode, cool mode, or heat & cool mode. The program schedule can be overridden by changing the set temperature (up or down button). After 2 hours, the program schedule will automatically be resumed. To manually return to the program schedule, press the PROG button twice.
Testing the Thermostat Once the thermostat is configured, it should be thoroughly tested. CAUTION!: Do not energize the air conditioning system when the outdoor temperature is below 50 degrees. It can result in equipment damage or personal injury. Heat Test 1. 2. 3. 4. Press SYS (left) button until heat mode is displayed. Adjust the set temperature so it is 5 degrees above the room temperature. Heat should come on within a few seconds. Red LED may turn on.
Setting the Time and Day of the Week The time and day of the week must be set for your program schedule to operate correctly. 1. Press the SYS (left) button until you are in the OFF mode. 2. Press and hold the PROG button (SYS (left) and FAN (right) buttons pressed simultaneously) in for 6 seconds. 3. Time displays (hour flashing). Press the up or down button to adjust the hour. 4. Press the FAN (right) button once to select minutes (minutes flashing). Press the up or down button to adjust the minutes. 5.
Programming Program Overview The SC5811 programmable thermostat has four periods (MORN, DAY, EVE, NITE) that are customizable for each day of the week. Each period will have a start time, heat temperature, cool temperature and programmable fan option. The SC5811 monitors the day and time, while maintaining the specific conditions you have chosen for each period in your program. Setting the program schedule: 1. Press the SYS (left) button until you are in OFF mode. 2.
From any of the screens on Page 23, you can press the FAN (right) button to begin entering your program schedule. The days shown on the display will all be programmed simultaneously. Once the FAN (right) button is pressed, MORN blinks. Use the up or down button to select a different period (MORN, DAY, EVE, NITE). Press FAN (right) button to advance to the next screen. Transition time hour blinks. Use the up or down button to select a different hour. Press FAN (right) button to advance to the next screen.
Lockout Feature The SC5811 has a button lockout feature so the mode cannot be changed and the temperature adjustment is limited. Select the appropriate lockout from Configuration Mode Settings (Step 8, Page 13) of this guide. To activate the LOCK feature: 1. Simultaneously press the SYS, FAN and UP buttons for 10 seconds. 2. will display and the lockout function will be enabled. To deactivate the LOCK feature, repeat steps 1 and 2 above.
Factory Preprogramming The SC5811 comes preprogrammed with the following schedule: MONDAY thru SUNDAY MORN 6:00 AM HEAT COOL FAN 70°F 78°F Off DAY 8:00 AM EVE 6:00 PM NITE 10:00 PM HEAT COOL FAN 62°F 85°F Off HEAT COOL FAN 70°F 78°F Off HEAT COOL FAN 62°F 82°F Off Personal Program Schedule Use the following personal program schedule to record your settings: MONDAY 1 TUESDAY 2 WEDNESDAY 3 26 MORN DAY EVE NITE HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN MORN DAY EVE
Personal Program Schedule (continued) THURSDAY 4 FRIDAY 5 SATURDAY 6 SUNDAY 7 MORN DAY EVE NITE HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN MORN DAY EVE NITE HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN MORN DAY EVE NITE HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN MORN DAY EVE NITE HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN HEAT COOL FAN 27
SimpleSetTM Field Programming Requires SimpleSetTM Transfer Cable (ACC-WIH21) This feature is used for transferring configuration and program schedule from the master to the target thermostat. All thermostats for a job can be mounted and powered up. Configure and program one thermostat. This will be the master. The master will be used to copy the program to the rest of the thermostats. Preparing the master to Send: 1. The master must be powered with 24 VAC. 2. Verify the master thermostat is in OFF mode. 3.
Troubleshooting Symptom Remedy No display Check for 24 VAC at thermostat; display is blank when 24 VAC is not present Time and day of week must be reset after extended power loss System fan does not come on properly Verify wiring is correct, check Gas/Electric Configuration (see Setting 6, Page 12) All thermostat buttons are inoperative Verify 24 VAC is present; unit locks out when 24 VAC is not present No response with first button press First button press activates backlight only Program schedul
ONE-YEAR LIMITED WARRANTY The Seller warrants its products against defects in material or workmanship for a period of one (1) year from the date of manufacture. The liability of the Seller is limited, at its option, to repair, replace or issue a non-case credit for the purchase prices of the goods which are provided to be defective.
