Braeburn 2000NC User manual
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Braeburn 2000NC is a digital thermostat compatible with low-voltage single-stage gas, oil, or electric heating or cooling systems, including single-stage heat pumps. It also works with 250mv to 750mv millivolt heating-only systems. The device features a programmable schedule, allowing you to set different temperatures for different times of the day and days of the week. It also includes a filter check monitor, adaptive recovery mode, and low battery warning.
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®
MODEL
2000NC
Builder Series
5-2 Day Programmable
Single Stage Heat/Cool
Digital Thermostat
USER MANUAL
Compatible with low voltage single stage gas, oil or electric heating or cooling systems, including single stage heat pumps. This thermostat can also be used on 250mv to 750mv millivolt heating only systems. Do not use this thermostat on applications with voltages above 30 Volts AC.
READ ALL INSTRUCTIONS BEFORE PROCEEDING
3
4
1
2
CONTENTS
SPECIFICATIONS
INSTALLATION
TESTING YOUR NEW THERMOSTAT
PROGRAMMING
5
6
7
ADDITIONAL OPERATION FEATURES
TROUBLESHOOTING
WIRING DIAGRAMS
WARNING!
Important Safety Information
• Always turn off power to the air conditioning or heating system prior to installing,
removing, cleaning or servicing thermostat.
• Read this manual thoroughly prior to installing, programming or operating
this thermostat.
• This thermostat is designed for use with a 24 Volt-AC low voltage single stage
gas, oil or electric heating or cooling systems.
• Do not use this thermostat on applications with voltages above 30 Volts AC.
• This thermostat requires two (2) properly installed "AA" alkaline batteries to
provide power for the thermostat to properly control the system operation.
• Wiring must conform to all building codes and ordinances as required by local and
national code authorities having jurisdiction.
• Do not short (or jumper) across terminals on the gas valve or at the heating or
cooling system control board to test the thermostat installation. This could
damage the thermostat and void the warranty.
• Do not select COOL mode of operation if the outside temperature is below 50˚ F
(10˚ C). This could possibly damage the controlled cooling system and may cause
personal injury.
• This thermostat should only be used as described in this manual. Any other use is
not recommended and will void the warranty.
1
SPECIFICATIONS
• Electrical Rating: 24 Volt AC (18-30 Volt AC)
1 amp maximum load per terminal
2 amp total maximum load (all terminals)
• Control Range: 45˚ - 90˚ F (7˚ - 32˚ C)
• Accuracy: +/- 1˚ F (+/- .5˚ C)
• DC Power: 3.0 Volt DC (2 AA Alkaline batteries included)
• Compatibility: Compatible with low voltage single stage gas, oil or electric
heating or cooling systems, including single stage heat pumps. This thermostat
can also be used on 250mv to 750mv millivolt heating only systems.
• Terminations: Rc, Rh, O/B, Y, W, G
2
2.1
INSTALLATION
Replacing Existing Thermostat
1. Always turn off power to the air conditioning or heating system prior to
removing existing thermostat.
2. Remove the cover of your old thermostat and locate the wire terminals.
Do not remove wires from terminals yet.
3. Using small pieces of masking tape, label wires prior to removal from terminals.
Use the chart below to determine the new terminal designations for your
new thermostat.
Old Terminal from New Terminal for
Existing Thermostat New Thermostat Terminal Description
V or Rc
M, 4, Rh, or R
B or O
Y
H, W or 4
G or F
C
Rc
Rh
O/B
Y
W
G
Cooling Transformer
Heating Transformer
Reversing Valve (Cooling or Heating)
Cooling Control
Heating Control
Fan Control
None-Cap the wire 24 Volt AC, Transformer Common
4. After labeling and removing all wires from terminals, unscrew the existing thermostat sub-base from wall. Be sure to secure wires to prevent them from slipping back into the hole in the wall.
NOTE:
This thermostat is designed for use with a 24 Volt AC low voltage single stage gas, oil or electric heating or cooling systems, including single stage heat pumps. This thermostat can also be used on 250mv to 750mv millivolt heating only systems. Do not use this thermostat on applications with voltages above 30 Volts AC.
2.2
Installing Your New Thermostat
NOTE: If you are installing this thermostat in a new installation be sure to locate the thermostat 4 to 5 feet above the floor in accordance with applicable building codes. Be sure to install the thermostat in a location that provides good airflow characteristics and avoid areas behind doors, near corners, air vents, direct sunlight or near any heat generating device. Installation in any of these areas could impact thermostat performance.
1. Always turn off power to the air conditioning or heating system prior to installing your new thermostat.
2. Place system switch on front of thermostat to the OFF position.
3. Place fan control switch on front of thermostat to the AUTO position.
4. Remove front of thermostat body from sub-base by pressing release latch on bottom of front body.
5. Place the thermostat sub-base against wall in the desired thermostat location.
1
2
INSTALLATION
6. Guide thermostat wires through center hole in sub-base. Continue to hold sub-base against wall.
7. Mark placement of mounting holes as appropriate and drill using a 3/16" drill bit.
8. Gently tap supplied plastic anchors into the holes in the wall.
9. Place the thermostat sub-base against the wall in the desired location, making sure the mounting holes are aligned as appropriate and the thermostat wires are properly inserting through opening in middle of sub-base.
10. Fasten the sub-base to wall using supplied screws.
11. Connect wires to quick wiring terminal block as appropriate using the new terminal designations. Refer to Wiring Diagrams, section 7 of this manual if required for assistance.
12. Make sure all of the wire connections are secure and are not touching any other
terminal to prevent electrical shorts and potential damage to the thermostat.
13. Turn the front thermostat body over exposing the rear view of the circuit board.
14. Locate the internal fan option switch, HG (Gas) / HE (Elec) on the circuit board.
This switch controls the heating system fan delay. Select gas for gas or oil fired systems. This will allow the furnace to run for a few seconds before initiating the fan. Select electric for systems with electric furnace elements that require the fan to come on immediately.
15. Using your finger, gently flip the switch towards the HG (Gas) or HE (Elec) selection
which indicates the low voltage heating system the thermostat will control.
16. Locate the internal NORM NON-HP / HP switch on the circuit board. This switch
configures the thermostat for normal (NORM NON-HP) heating and cooling systems or heat pump (HP) systems.
17. Using your finger, gently flip the switch towards the NORM NON-HP or HP selection which indicates the low voltage heating system the thermostat will control.
18. Locate the internal O (reversing valve active in cooling) or B (reversing valve active in heating on the circuit board.
19. Using your finger, gently flip the switch toward O or B selection.
20. Locate the internal ˚F / ˚C switch on the circuit board.
21. Using your finger, gently flip the switch toward the preferred temperature
˚F / ˚C scale.
22. Attach front body of thermostat to sub-base of thermostat being careful to align the
terminal pins on the front body with the terminal block on the sub-base.
23. Open battery compartment door.
24. Install two new "AA" alkaline batteries into battery compartment. Make sure to locate the positive (+) ends of the batteries and match them with the positive (+) terminals located in the battery compartment.
NOTE: If you installed the batteries prior to accomplishing steps 14 through 17, then you will need to reset the thermostat to register your thermostat switch configurations prior to programming. Gently press the RESET button on the front of the thermostat using a paper clip or a small pencil tip.
25. Close battery compartment.
26. Restore system power so you can test installation.
3
TESTING YOUR
NEW THERMOSTAT
WARNING!
Read BEFORE Testing
• Do not short (or jumper) across terminals on the gas valve or at the heating or
cooling system control board to test the thermostat installation. This could
damage the thermostat and void the warranty.
• Do not select COOL mode of operation if the outside temperature is below
50˚ F (10˚ C). This could possibly damage the controlled cooling system & may
cause personal injury.
• This thermostat includes an automatic compressor protection feature to avoid
potential damage to the cooling system from short cycling. This thermostat
automatically provides a 5-minute delay after turning off the cooling system output
to protect the compressor. This protection is also present in the heat mode of
operation on single stage heat pump systems to protect the compressor.
2
3
TESTING YOUR
NEW THERMOSTAT
cont.
NOTE: Test your thermostat prior to programming any user settings. Pressing the
RESET button will erase any user entries for time of day, day of week, option settings and programming if previously programmed. This will return all user settings and return them to their default values. Remember, this will erase all programs entered by the user.
1. Place the system switch in the HEAT position.
2. Press the button on the keypad until the setpoint temperature setting is a minimum of 3 degrees higher than the current room temperature. The heating system should start within several seconds. The fan may not turn on immediately due to the heating system built-in fan delay.
3. Place the system switch in the OFF position. The heating system should stop within several seconds on normal single stage heating or cooling systems. On single stage heat pump systems, you must wait 5 minutes for the automatic compressor short cycle protection period to expire, or press the RESET button to bypass this feature for initial testing purposes. Pressing the programming if previously programmed.
RESET button will erase any user entries for time of day, day of week, option settings and
4. Place the system switch in the COOL position.
5. Press the button on the keypad until the setpoint temperature is a minimum of 3 degrees lower than the current room temperature.
6. The cooling system should start within several seconds. Place the system switch in the OFF position.
7. Place the fan switch in the ON position. The system blower should start.
8. Place the fan switch in the AUTO position. The system blower should stop.
4
4.1
PROGRAMMING
Default Thermostat Settings
Function
Operation Mode
Temperature Hold
Clock
Room Temperature
Setpoint Temperature
Status After Reset
Normal Operating Mode
Extended and Temporary Hold Cleared
12:00 pm, Monday
70˚ F (21.0˚ C), to be renewed within
5 seconds
According to system switch:
62˚ F (17.0˚ C) for Heat and Off
Temperature Scale
Operating Program
Low Battery Warning
Temperature Differential 0.5˚ F (0.25˚ C)
Short Cycle Protection Timer Reset
Output Relays
Filter Check Monitor
Extended Hold
Adaptive Recovery Mode
83˚ F (28.0˚ C) for Cool
˚F or ˚C dependent on switch setting
DAY program, Monday
Off, to be renewed within 5 seconds
Off
0 days-off
Indefinite
Reset
4.2
Setting Current Time of Day and Day of Week
NOTE:
It is important for you to set the current time of day (note AM/PM indicator in display), and the current day of week correctly to avoid problems with program execution.
1. When in normal operating mode, press the DAY/TIME keypad button. The LCD display will be cleared except for the time, am/pm indicator and the day of the week. The hour portion of the time will flash.
3
4
PROGRAMMING
cont.
2. Press the or button to set the current hour.
3. Press the DAY/TIME button again, the minute portion of the time will flash.
4. Press the or button to set the current minute.
5. Press the DAY/TIME button again, the day of the week indicator will flash.
6. Press the or button to set the current day of the week.
7. Press the DAY/TIME button again and the thermostat will return to normal operating mode.
NOTE:
The thermostat will return to normal operating mode automatically after 15 seconds if no key is pressed. It will also return to normal operating mode immediately if the RETURN button is pressed.
4.3
Setting Thermostat User Options
The default user options are compatible with most systems and applications. They are normally set at the time of installation and usually do not require modification under normal operating conditions. If you desire to change these settings, simply follow the instructions below.
4.3.1
Setting the Temperature Differential
NOTE: The temperature differential settings are the same for both the heating and cooling systems.
The default setting is 0.5˚ F (0.25˚ C). The room temperature must change 0.5˚ F (0.25˚ C) from the setpoint temperature before the thermostat will initiate the system in heating or cooling.
1. In normal operating mode, press and hold the
RETURN button for 4 seconds. The LCD display will show "d1 x", where "x" equals the ˚F / ˚C differential setting. This is the current temperature differential setting.
2. Press the or button to set the temperature differential to your desired setting of 0.5˚, 1˚, or 2˚ F (0.25˚, 0.5˚, or 1˚ C).
NOTE: Once you have finished setting the temperature differential you can wait 15 seconds and the thermostat will automatically return to the normal operation mode.
Otherwise, you can press the RETURN button to set the extended hold time.
4.3.2
Setting the Extended Hold Time (see also section 5.3)
The default setting is Long (indefinite) Hold. If the HOLD feature is activated, the current setpoint will be held until HOLD is released.
3. After pressing the RETURN button again, the display will show " HOLD LG", where LG is indefinite hold.
HOLD 4. Press the or button to change the Extended
Hold time from indefinite (LG) to 24 hours (SH).
5. Press the RETURN button again to set the Filter
Check Monitor or wait 15 seconds for the thermostat to return to the normal mode.
4
4
PROGRAMMING
cont.
4.3.3
Setting Filter Check Monitor (see also section 5.7)
The default setting is 0 days (Filter monitor disabled).
6. After pressing the RETURN button again, the display will show "FILT XXX SET" where
XXX is the Filter Monitor interval.
FILT
7. Press the or button to change the Filter Monitor interval to the desired value of 0 (disabled), 30, 60, 90, 120, or 180 days.
8. Press the RETURN button again or wait 15 seconds for the thermostat to return to the normal mode.
4.4
Setting Your Energy Saving Programs - Tips Before Starting
• It is important for you to set the current time of day (note the AM/PM indicator in the
display), and the current day of week correctly to avoid problems with program
execution. This must be done prior to entering any program settings.
• The heating and cooling programs have both separate setpoint times and
setpoint temperatures.
• This thermostat is pre-programmed with weekday and weekend setpoint times and
temperatures recommended by the Environmental Protection Agency and the U.S.
Department of Energy in their Energy Star® program. These settings provide efficient
energy savings during normal heating and cooling modes of operation. If you desire to
use the settings in the table, no further programming is necessary. Review these time
and temperature settings prior to establishing your personal program settings to
maximize your savings, and minimize programming requirements.
MORN
DAY
EVE
NIGHT
Weekday
Time: 6:00 am
Heat: 70˚ F (21˚ C)
Cool: 75˚ F (24˚ C)
Time: 8:00 am
Heat: 62˚ F (17˚ C )
Cool: 83˚ F (28˚ C)
Time: 6:00 pm
Heat: 70˚ F (21˚ C)
Cool: 75˚ F (24˚ C)
Time: 10:00 pm
Heat: 62˚ F (17˚ C)
Cool: 78˚ F (26˚ C)
Time: 6:00 am
Heat: 70˚ F (21˚ C)
Cool: 75˚ F (24˚ C)
Time: 8:00 am
Heat: 70˚ F (21˚ C)
Cool: 75˚ F (24˚ C)
Time: 6:00 pm
Heat: 70˚ F (21˚ C)
Cool: 75˚ F (24˚ C)
Time: 10:00 pm
Heat: 62˚ F (17˚ C)
Cool: 78˚ F (26˚ C)
Weekend
• Make sure you place the system switch in the HEAT or COOL modes of operation
as appropriate. You should not enter a program in the OFF position.
• When you place the system switch in the COOL or HEAT modes of operation, the
appropriate indicator will also appear in the LCD display when the system is running.
• When you place the system switch in the OFF mode the display will indicate OFF.
4.4.1
Programming Overview
Your thermostat contains separate Weekday and Weekend Program Groups that allow you to change the daily setpoint times and temperatures to meet your individual schedule needs.
Weekday - allows you to program all the weekdays (M, TU, W, TH, F will show in display) at the same time. Allows programming times and temperature settings for four setpoints
(MORN, DAY, EVE & NIGHT) to meet your weekday schedule needs.
Weekend - allows you to program all the weekend days (SA, SU will show in the display) at the same time. Allows programming times and temperature settings for four setpoints
(MORN, DAY, EVE & NIGHT) to meet your weekend schedule needs.
5
4
PROGRAMMING
cont.
4.4.2
Entering Your Program
1. Place the system switch in the HEAT mode of operation.
2. Press the PROG button to enter Program
Setting mode. The MORN setpoint of the
Weekday Program Group will be displayed.
The display will show M, TU, W, TH, F to indicate the Weekday group is being programmed. The hour portion of the setpoint time and the AM/PM indicator will be flashing.
3. Press the or button to change the time to the desired hour in 1 hour increments. Press the PROG button to save. The minute portion of the setpoint time will begin flashing.
4. Press the or button to change the time to the desired minute in 10-minute increments. Press the PROG button to save. The SET TEMP will begin flashing.
5. Press the or button to change the setpoint temperature to the desired setting in
1˚ F increments (0.5˚ C). Press the PROG button to save. The thermostat will now display the DAY setpoint time and temperature. Again, you will see the hour portion of the setpoint time and the AM/PM indicator will be flashing.
6. Follow steps 3 through 5 to set the setpoint times and temperatures for the MORN,
DAY, EVE and NIGHT setpoints for the Weekday group in the HEAT mode.
7. After pressing the PROG button, you will enter the Weekend Program Group. The display will show SA, SU to indicate the Weekend group is being programmed. The hour portion of the MORN setpoint time and the AM/PM indicator will be flashing.
8. Follow steps 3 through 5 to set the setpoint times and temperatures for the MORN,
DAY, EVE and NIGHT setpoints for the Weekend group in the HEAT mode.
9. Place the system switch in the COOL mode of operation. The display will show COOL.
Follow steps 2 through 8 to program the setpoint times and temperatures for the
Weekday and Weekend groups in the COOL mode.
NOTE: To erase all entered programs, current time of day, day of week and other user settings, gently press the RESET button using a paper clip or a small pencil tip. This will return all thermostat settings to their default values.
5
ADDITIONAL
OPERATION FEATURES
5.1
Review Set Temperature
1. Press and hold the or button. The current setpoint temperature will be displayed
in the place of the current room temperature, and the indicator SET TEMP will
be displayed.
2. The display will return to normal operating mode
when the or button is released. Continuing to
hold the or button for 3 seconds or longer
will allow the user to temporarily override the
current programmed setpoint (See Temporary
Program Override).
5.2
Temporary Program Override
1. Press and hold or button for 3 seconds.
The entire display will flash once and the SET TEMP
indicator will be displayed. Release the or button
and press the or button again as desired to
adjust the set temperature.
6
5 cont.
5.2
Temporary Program Override cont.
2. The display will return to normal operating mode after 15 seconds or you can press the RETURN button.
3. The program indicator (MORN, DAY, EVE OR NIGHT) will be flashing in the display indicating that a Temporary Program Override is in effect. The Temporary Program
Override will reset when the next setpoint time occurs or after 4 hours–whichever comes first.
5.3
Extended Hold (Vacation) Mode
1. Press the HOLD button to bypass the program schedule. The current setpoint temperature will be held either permanently or for 24 hours depending on the setting selection made in section 4.3.2.
2. Press the HOLD button again to return the thermostat
to normal program operation.
3. The hold period lasts until the hold is released as in
step #2 above, or is limited to 24 hours if the default
was changed in the User Options Settings ( see
section 4.3.2).
5.4
Compressor Protection
This thermostat includes an automatic compressor protection feature to avoid potential damage to the cooling system from short cycling. This thermostat automatically provides a
5-minute delay after turning off the cooling system output to protect the compressor. This protection is also present in the heat mode of operation on single stage heat pump systems to protect the compressor.
NOTE: The installer can reset the thermostat and bypass the compressor protection features by pressing the RESET button. This will erase all entered programs, current time of day, day of week and other user settings and should only be used during installation for testing purposes or to reset a thermostat to regain normal operation. This will return all Thermostat settings to their default values. The user will have to re-program all of the erased settings.
5.5
Low Battery Detection and Replacement
This thermostat requires two (2) properly installed "AA" alkaline batteries to provide power for the thermostat to properly control the system operation.
This thermostat is equipped with a low battery detection feature that constantly monitors the batteries during normal operating mode to determine whether they have sufficient power to provide proper operation.
When this feature determines that the battery status is low, a low battery indicator will appear in the display. It is recommended that the batteries be replaced immediately to maintain system operation and program settings.
7
5
5.5
ADDITIONAL
OPERATION FEATURES
cont.
Low Battery Detection and Replacement cont.
1. Locate the battery compartment door.
2. Gently remove the two "AA" alkaline batteries located in the battery compartment.
3. Install two new "AA" alkaline batteries into battery compartment. Be sure to match the positive (+) ends of the batteries with the positive (+) terminals located in the battery compartment.
4. Close battery compartment and verify that the low battery indicator does not appear in the display.
5.6
Adaptive Recovery Mode (ARM™)
In order to maximize comfort and energy efficiency, this thermostat is equipped with an
Adaptive Recovery Mode (ARM™). This feature minimizes the amount of time required by heating or cooling system to reach the new setpoint, after a setback period is completed, and assures your desired temperature is achieved at your set program times.
This feature activates when recovering room temperature from setback programs to comfort programs, so it will only take place when the current (heating) program setpoint temperature is lower than the upcoming program set point temperature, or the current (cooling) program setpoint temperature is higher than the upcoming program setpoint temperature.
During ARM™, room temperature is recovered gradually by turning on the heating or cooling before the end of the setback period. The set point temperature is changed to that of the upcoming comfort program temperature. The start time of recovery is based on the difference between the current room temperature and the upcoming comfort program setpoint temperature. The recovery to the upcoming setpoint starts 10 minutes before the upcoming setpoint time for each degree of temperature change required, up to a maximum of 2 hours.
ARM™ does not operate when the unit is in the HOLD mode, or if the program is temporarily overridden.
5.7
Filter Check Monitor (see section 4.3.3 for setting)
The Filter Check Monitor displays a reminder for required filter replacement or cleaning, by flashing the FILT segment in the display. See instructions on your filter or heating/cooling unit for recommendations for interval setting.
When the selected interval has been reached, and required cleaning or replacement has been performed, press the RETURN button in any normal mode to reset the timer and turn off the warning.
5.8
Resetting the Thermostat
The Reset feature allows the user to completely reset the thermostat to register new manual switch settings. To erase all entered programs, current time of day, day of week and other user settings, gently press the RESET button using a paper clip or a small pencil tip.
6
TROUBLESHOOTING
SYMPTOM
Thermostat does not turn on heating or cooling system.
POTENTIAL SOLUTION
Check to see if OFF is shown in display. This indicates that the system is turned off at the thermostat. Move the system selector switch to the HEAT or COOL position. After the compressor short cycle protection 5-minute period expires the system should start within a minute’s time.
Compressor protection features may be in effect due to compressor short cycle conditions, power outages or rolling blackouts. See Compressor Protection, section 5.4 for full explanation of this feature.
Heating or cooling system may be malfunctioning. Call a professional service technician immediately to verify system operation.
Thermostat turns on heating instead of cooling or cooling instead of heating.
Thermostat will not follow program setpoints.
Check thermostat wiring to make sure that the heating and cooling stages are connected to the correct terminals on the wiring terminal block. For heat pump systems, check that the
O/B switch is set to the correct position. See Installation and
Wiring Diagrams sections of this manual.
Check current time of day, day of week program settings. Be sure to verify AM/PM indicator is accurately displaying desired time settings. See Setting Current Time of Day and Day of Week, section 4.2 of this manual.
Check to see if OFF is shown in display. This indicates that the system is turned off at the thermostat. Move the system selector switch to the HEAT or COOL position. After the compressor short cycle protection 5-minute period expires the system should start within several seconds.
Verify your program time and temperature entries. The heating and cooling programs utilize separate times and temperatures for the MORN, DAY, EVE and NIGHT setpoints. See Setting Your
Energy Saving Programs, section 4.4 of this manual.
Thermostat program has been temporarily overridden and program indicator is flashing in the display. Press RETURN button to return the thermostat to normal program operation or wait until next setpoint and the temporary override will expire.
Thermostat program is in Extended Hold (Vacation) Mode and
HOLD and TEMP is showing in display. Press HOLD or RETURN button to release permanent hold and return the thermostat to normal program operation.
Thermostat turns heating or cooling system on too often or not often enough.
Increase or decrease first stage temperature differential setting as appropriate to provide the desired performance level. See
Setting Temperature Differential, section 4.3.1 of this manual.
8 9
6
TROUBLESHOOTING
cont.
SYMPTOM
Low battery indicator is shown in thermostat display.
POTENTIAL SOLUTION
Replace batteries immediately to maintain proper system operation. See Low Battery Detection and Replacement, section
5.5 of this manual.
OFF is shown in thermostat display and heating or cooling system will not start.
This indicates that the system is turned off at the thermostat.
The thermostat must be in HEAT or COOL modes of operation to control the heating or cooling system. Move the system selector switch to the HEAT or COOL position.
Thermostat display is blank.
HI is shown in the thermostat display where the room temperature is normally displayed.
It is possible that the batteries are drained and not providing power for the thermostat to control the system. Replace batteries immediately to maintain proper system operation. See
Low Battery Detection and Replacement, section 5.5 of this manual. If you replace the batteries and the display does not appear, call a professional service technician to verify thermostat and system performance.
The temperature sensed by the thermostat is higher than the
90˚ F (32˚ C) upper limit of the thermostat’s display range. The display will return to normal after the sensed temperature lowers within the 45˚ to 90˚ F (7˚ to 32˚ C) display range. Turn on the cooling system or use other methods to lower the temperature accordingly.
This condition could occur from the system being turned off during an exceptionally warm period or upon installation when the thermostat has been stored for a long period of time in a warm vehicle or location prior to being installed.
LO is shown in the thermostat display where the room temperature is normally displayed.
The temperature sensed by the thermostat is lower than the 45˚
F (7˚ C) lower limit of the thermostats display range. The display will return to normal after the sensed temperature rises within the 45˚ to 90˚ F (7˚ to 32˚ C) display range. If the temperature in the controlled space seems to be normal, wait for the thermostat to acclimate to the correct room temperature. If the room seems to be colder than usual, turn on the heating system to raise the temperature as needed for comfort within the room.
This condition could occur from the system being turned off during a cold weather period or upon installation when the thermostat has been stored for a long period of time in a cold vehicle or location prior to being installed. The thermostat should be allowed to warm up prior to installation to allow proper heating control once installed.
6
TROUBLESHOOTING
cont.
SYMPTOM
Thermostat will not allow me to program a set point temperature higher than 90˚ F (32˚ C).
POTENTIAL SOLUTION
This is above the normal thermostat temperature setting range of 45˚ to 90˚ F (7˚ to 32˚ C).
Thermostat will not allow me to program a set point temperature lower than 45˚ F (7˚ C).
This is below the normal thermostat temperature setting range of 45˚ to 90˚ F (7˚ to 32˚ C).
Fan continues to run all the time whether the system is on or off.
The room is too warm or too cold.
System turns on prior to the end of a setback period.
Check that the fan control switch is in the AUTO position. This will allow the fan to run only when the heating or cooling system is turned on and running.
Check thermostat wiring to make sure that the fan control wiring is connected to the correct terminals on the wiring terminal block. See Installation and Wiring Diagrams sections of this manual.
See Review Set Temperature, section 5.1 of this manual to verify the current set point and make any modifications that are necessary.
Thermostat is in Adaptive Recovery Mode- (see section 5.6).
7
WIRING DIAGRAMS
Typical 2-Wire 24 Volt AC or 250mV - 750mV Millivolt Heating Systems
Rc Rh O/B Y W G
Remove
Factory Installed
Jumper
Heat
Control
Hot Side
Transformer
24 Volt AC
Transformer or Thermopile
120
Volt AC
10 11
7
WIRING DIAGRAMS
cont.
Typical 4-Wire Single Transformer Heating and Cooling System
Rc Rh O/B Y W G
Factory Installed
Jumper
Cool
Control
Heat
Control
Fan
Control
Hot Side
Transformer
24 Volt AC
Transformer
120
Volt AC
NOTE:
For heating or cooling only system ignore opposite connection.
Typical 5-Wire Two Transformer Heating and Cooling System
Rc Rh O/B Y W G
Remove
Factory Installed
Jumper
Hot Side
Cool
Transformer
Hot Side
Heat
Transformer
Heat 24 VAC
Transformer
120
Volt AC
Cool
Control
Heat
Control
Fan
Control
Cool 24 VAC
Transformer
120
Volt AC
Typical Single Stage Heat Pump System
Rc Rh O/B Y W G
Factory Installed
Jumper
Compressor
Control
Reversing
Valve
Fan
Control
Hot Side
Transformer
24 Volt AC
Transformer
120
Volt AC
12
Store this booklet for future reference
®
For more information on energy savings, go to www.energystar.gov
Braeburn Systems LLC, as an Energy Star partner has determined that this product meets the Energy
Star Guidelines developed by the U.S. Environmental
Protection Agency & the U.S. Department of Energy for maximum energy efficiency.
TWO YEAR LIMITED WARRANTY: Braeburn Systems LLC warrants each new Braeburn thermostat against any defects that are due to faulty material or workmanship for a period of two years after the original date of purchase by a professional service technician. This warranty and our liability does not apply to batteries, nor does it include damage to merchandise or the thermostat resulting from accident, alteration, neglect, misuse, improper installation or any other failure to follow Braeburn installation and operating instructions.
Braeburn Systems LLC agrees to repair or replace at its option any Braeburn thermostat under warranty provided it is returned postage prepaid to our warranty facility in a padded carton within the warranty period, with proof of the original date of purchase and a brief description of the malfunction. This limited warranty does not include the cost of removal or re-installation.This warranty gives you specific legal rights and you may also have other rights that vary from state to state or province to province. Answers to any questions regarding our limited warranty may be obtained by writing our corporate offices.
Warranty Facility: Braeburn Systems LLC
Attn: Warranty Department
2215 Cornell Avenue
Montgomery, IL 60538
®
Braeburn Systems LLC
2215 Cornell Avenue • Montgomery, IL 60538
Technical Assistance: www.braeburnonline.com
Phone: 866-268-5599
© 2005 Braeburn Systems LLC • Patents Pending • All Rights Reserved. Pub. No. 2000NC-100-003
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