Braeburn Programmable Thermostats

1 Specifications

Compatibility:

• Single stage heat / cool conventional and heat pump systems
• Conventional systems up to 2 heat / 1 cool (2220NC only)
• Single compressor heat pump systems with an auxiliary heat stage (2220NC only)
• 250 – 750 millivolt heat only systems

Electrical and control specifications:

• Electrical Rating: 24 Volt AC
• 1 amp maximum load per terminal
• AC Power: 18 – 30 Volts AC
• DC Power: 3.0 Volt DC (2 “AA” Alkaline Batteries Included)
• Control Range: 45° - 90° F (7° – 32° C)
• Temperature Accuracy: +/-1° F (+/- .5° C)

Terminations:

• 2020NC: Rc, Rh, O, B, Y1, W1, G, C
• 2220NC: Rc, Rh, O, B, Y1, E/W1, G, W2, C

Model Number: 2020NCW-100-04

2 About Your Thermostat

The thermostat display shows current room temperature, day of week, program event, time of day, low battery indicator, fan indicator, hold mode indicator, system status, set temperature, and service filter indicator.

Key components:

• 1 Room Temperature: Displays the current room temperature.
• 2 Day of Week: Displays the current day of week.
• 3 Program Event Indicator: Indicates the current program event.
• 4 Time of Day: Displays the current time of day.
• 5 Low Battery Indicator: Indicates when batteries need to be replaced.
• 6 Fan Indicator: Indicates when the system fan is running.
• 7 Hold Mode Indicator: Displays if in HOLD mode.
• 8 System Status Indicator: Displays information about system status.
• 9 Set Temperature: Displays the current set point temperature.
• 10 Service Filter Indicator: Displays service/maintenance reminders.

The thermostat features the following controls:

• 11 Reset Button: Resets thermostat back to factory defaults.
• 12 System Switch: Selects system preference (COOL, OFF, HEAT, EMER).
• 13 PROG Button: Selects programming mode.
• 14 HOLD Button: Enters/Exits the HOLD mode (program bypass).
• 15 RETURN Button: Returns to normal from program or setting modes.
• 16 DAY/TIME Button: Used to set the time and day of week.
• 17 Quick Reference Instructions: Stored in slot at top of thermostat.
• 18 Arrow Buttons: Used to increase or decrease settings.
• 19 Fan Switch: Selects the system fan mode (AUTO, ON).

The battery compartment is located in the back of the thermostat.

3 Installation

⚠ Warning: Disconnect power before beginning installation.

Thermostat Location:

Install the thermostat approximately 5 feet (1.5m) above the floor in an area with good air circulation and average room temperature. Avoid locations affected by drafts, dead air spots, hot/cold air ducts, sunlight, appliances, concealed pipes, chimneys, and outside walls.

Install your new Braeburn thermostat in 5 basic steps:

1. Install the Sub-Base
2. Provide Power
3. Connect Your Wires
4. Set Installer Switches
5. Attach Thermostat to Sub-Base

1. Install the Sub-Base:

Remove the sub-base from the body of the thermostat. Mount the sub-base as shown in the diagram.

Diagram shows the sub-base being mounted to a wall. Instructions indicate to drill 3/16" pilot holes and use supplied anchors for drywall or plaster.

Note: After sub-base installation, insert the quick reference card into the slot on the top of the base.

2. Provide Power:

Diagram shows a 24VAC power connection to the 'C' terminal on the thermostat sub-base.

For 24 Volt AC power, connect the common side of the transformer to the C terminal on the thermostat sub-base.

For primary or back-up power, insert two (2) "AA" alkaline batteries into the battery compartment. Ensure correct polarity (+/-).

3. Connect Your Wires:

Wiring Terminations:

Additional Terminations (2220NC only):

Typical Wiring Configurations - Conventional Systems:

Note: The “Installer Switch” option will be configured in the next step.

Heat Only or Millivolt:

Set Installer Switch to CONV

• Rh: Power Connection
• W: Heat Relay (appears as W1/E on 2220NC)
• G: Fan Relay [note 4]
• C: 24 Volt AC Transformer Common [note 1]

1 HEAT / 1 COOL Single or Dual Transformer:

Set Installer Switch to CONV

• Rh: 24 Volt AC Power (heating transformer) [note 2]
• Rc: 24 Volt AC Power (cooling transformer) [note 2]
• W1: Heat Relay (appears as W1/E on 2220NC)
• Y1: Compressor Relay
• G: Fan Relay
• C: 24 Volt AC Transformer Common [note 1, 3]

2 HEAT / 1 COOL Single or Dual Transformer (2220NC Only):

Set System Type to CONV

• Rh: 24 Volt AC Power (heating transformer) [note 2]
• Rc: 24 Volt AC Power (cooling transformer) [note 2]
• W1: Heat Relay Stage 1
• W2: Heat Relay Stage 2
• Y1: Compressor Relay Stage 1
• G: Fan Relay
• C: 24 Volt AC Transformer Common [note 1, 3]

NOTES - Conventional Systems:

• [1] If batteries are installed the 24 Volt AC common connection is optional.
• [2] Remove factory installed jumper for dual transformer systems.
• [3] In dual transformer systems, transformer common must come from cooling transformer.
• [4] If needed for system.

Provide disconnect and overload protection as required.

Typical Wiring Configurations - Heat Pump Systems:

Note: The “Installer Switch” option will be configured in the next step.

1 HEAT / 1 COOL - No Auxiliary Heat:

Set Installer Switch to HP

• Rh: 24 Volt AC Power
• Rc: Connected to Rh with supplied Jumper Wire
• O or B: Changeover Valve [note 2]
• Y1: Compressor Relay
• G: Fan Relay
• C: 24 Volt AC Transformer Common [note 1]

2 HEAT / 1 COOL - Including Auxiliary Heat (2220NC only):

Set Installer Switch to HP

• Rh: 24 Volt AC Power
• Rc: Connected to Rh with supplied Jumper Wire
• O or B: Changeover Valve [note 2]
• Y1: Compressor Relay (1st stage heating/cooling)
• W2: Auxiliary Heat Relay (2nd stage heating) [note 3]
• E: Emergency Heat Relay [note 3]
• G: Fan Relay
• C: 24 Volt AC Transformer Common [note1]

NOTES - Heat Pump Systems:

• [1] If batteries are installed the 24 Volt AC common connection is optional.
• [2] Select O for cool active or B for heat active.
• [3] Install a field supplied jumper between the W2 and E terminals if there is no separate emergency heat relay installed.

Provide disconnect and overload protection as required.

4. Set Installer Switches:

The Installer switches are located on the back of the thermostat and must be properly configured for this thermostat to operate properly.

Note: The reset button must be pressed after making any changes to these switches.

5. Attach Thermostat to Sub-Base:

1. Line up the thermostat body with the sub-base.
2. Carefully push the thermostat body against the sub-base until it snaps into place.
3. Insert quick reference card into slot on top of thermostat.

Diagram shows the thermostat body being attached to the sub-base.

4 System Testing

⚠ 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 the 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 includes an automatic compressor protection feature to avoid potential damage to the compressor from short cycling. When testing the system, make sure to take this delay into account.

Note: The compressor delay can be bypassed by pressing the reset button on the front of the thermostat. All user settings will be returned to factory default.

Testing Steps:

1. Move the SYSTEM switch to HEAT mode. Press ↑ to raise the set temperature a minimum of 3 degrees above the current room temperature. The system should start within a few seconds. With a gas heating system, the fan may not start right away.
2. Move the SYSTEM switch to the OFF mode. Allow the heating system to fully shut down.
3. Move the SYSTEM switch to the COOL mode. Press ↓ to lower the set temperature a minimum of 3 degrees below the current room temperature. The system should start within a few seconds (unless compressor short cycle protection is active – See note above).
4. Move the SYSTEM switch to the OFF mode. Allow the cooling system to fully shut down.
5. Move the FAN switch to the ON mode. The system fan should start within a few seconds.
6. Move the FAN switch to the AUTO mode. Allow the system fan to turn off.

5 Setting User Options

Advanced User Options:

User options allow customization of thermostat features. Most users will not need to change these settings.

To enter the User Options menu, hold down the RETURN button for approximately 3 seconds until the screen changes and displays the first User Option. Press the ↑ or ↓ button to change the setting. Press RETURN to advance to the next option. The thermostat returns to normal mode after the last option or 15 seconds of inactivity.

Table of User Options:

Detailed Explanation of User Options: Temperature Differential

The differential setting is the temperature control range. A smaller setting provides tighter temperature control and comfort. The 2nd stage differential is for systems with a second stage of heating (auxiliary heat).

Extended Hold Period (User Option 3):

Allows selection of hold period when HOLD mode is activated. LNG holds temperature indefinitely. 24HRS holds for 24 hours then returns to the program.

Service Filter Monitor (User Option 4):

A user-selectable service monitor that displays a reminder for a required air filter replacement by flashing "SERVICE FILTER". Touch RETURN to reset the timer after replacement. Select OFF or a set number of days before the reminder appears.

Adaptive Recovery Mode (early recovery) (User Option 5):

During Adaptive Recovery Mode (ARM™), room temperature is recovered gradually by turning on heating/cooling before the end of the set-back period. The set point changes to the upcoming program temperature.

6 Setting Your Program Schedule

Setting the Time and Day:

1. In normal operating mode, press the DAY/TIME button. The display switches to day/time setting mode with the hour flashing.
2. Press ↑ or ↓ to adjust the hour. Press DAY/TIME.
3. Press ↑ or ↓ to adjust the minute. Press DAY/TIME.
4. Press ↑ or ↓ to adjust the day of the week. Press RETURN to exit.

Tips Before Setting Your Program Schedule:

• Make sure your current time and day of the week are set correctly.
• When programming, ensure the AM and PM indicators are correct.

This thermostat comes pre-programmed with a default energy saving program. The following table outlines the pre-programmed times and temperatures for heating and cooling in each of your 4 daily weekday and weekend events. If you wish to use these settings, no further programming is necessary.

5-2 Day Programming – Weekday/Weekend Factory Settings:

Programming a 5-2 Day Residential Schedule:

The 5-2 day residential programming mode allows programming Monday-Friday with one schedule and Saturday-Sunday with a different schedule.

1. Touch the PROG button. The display switches to programming mode, showing days M, TU, W, TH, F, and the hour flashing.
2. Move the SYSTEM switch to either the HEAT or COOL position.
3. Press ↑ or ↓ to adjust the hour for the MORN event. Press PROG.
4. Press ↑ or ↓ to adjust the minute for the MORN event. Press PROG.
5. Press ↑ or ↓ to adjust the temperature for the MORN event. Press PROG.
6. Repeat steps 3-5 for the DAY, EVE, and NIGHT events.
7. Repeat steps 3-6 for the weekend (S, SU) program.
8. If needed, repeat steps 2-7 to program the opposite mode (HEAT or COOL).
9. Press RETURN to exit.

7 Operating Your Thermostat

Setting the System Control Mode:

The SYSTEM switch selects operation mode:

• COOL: Only your cooling system will operate.
• OFF: Heating and cooling systems are off.
• HEAT: Only your heating system will operate.

Additional Switch Position (Model 2220NC Only:

• EMER: Operates a backup heat source (Emergency Heat) for heat pump systems only.

Note: If your model 2220NC was configured for a conventional system (CONV), the EMER option is not available. "NO EMER SET" will flash if EMER is selected.

Setting the Fan Control Mode:

The FAN switch selects fan mode:

• AUTO: The system fan runs only when your heating or cooling system is running.
• ON: The system fan stays on.

Temperature Adjustment:

• Temporary Adjustment: Press the ↑ or ↓ button to adjust the current set point temperature.
• Extended Adjustment: Press the HOLD button so that HOLD appears in the display screen. Press ↑ or ↓ to adjust the current set temperature (See "Extended Hold Period", page 8).

Status Indicators:

Status indicators appear in the display to show system status:

• HEAT ON: Indicates your heating system is running.
• COOL ON: Indicates your cooling system is running.
• SERVICE: Indicates a user-selectable service reminder was selected (see "Service Filter Monitor", page 8).

Additional status indicators (Model 2220NC Only:

• AUX: Indicates the auxiliary stage of heating is running (multi-stage systems only).
• EMER: Indicates the emergency heating system is running (heat pump systems only).

Program Event Indicators:

Program Event Indicators show which part of your current program is active (MORN, DAY, EVE, NIGHT). If an indicator is flashing, the program has been temporarily bypassed and will resume at the next scheduled event. No program event indicator is shown in HOLD Mode.

Resetting the Thermostat:

A reset button erases all user settings and programming. To reset, use a small object (like a toothpick or paperclip) to gently press the button located inside the small hole on the front of the thermostat housing labeled "reset".

8 Additional Operation Features

Compressor Protection:

This thermostat includes an automatic compressor protection delay to avoid potential damage from short cycling. This feature activates a short delay after turning off the system compressor.

9 Thermostat Maintenance

Changing the Batteries:

If batteries are installed and become low, a low battery indicator will appear. Change batteries immediately.

Instructions:

1. Remove thermostat body by gently pulling it from base.
2. Remove old batteries and replace with new batteries.
3. Make sure to correctly position the (+) and (-) symbols.
4. Gently push thermostat body back onto base.

Diagram shows two AA batteries being inserted into the battery compartment with correct polarity.

Note: Replace thermostat batteries annually or if the thermostat will be unattended for an extended period.

Thermostat Cleaning:

Never spray liquid directly on the thermostat. Use a soft damp cloth to wipe the outer body. Never use abrasive cleansers.

Store this manual for future reference.

Limited Warranty

This product is backed by a 5-year limited warranty when installed by a professional contractor. Limitations apply. For terms and conditions, obtain a full copy of the warranty:

• Online: www.braeburnonline.com/warranty
• Phone: 866.268.5599
• Write: Braeburn Systems LLC, 2215 Cornell Avenue, Montgomery, IL 60538

Braeburn Systems LLC
2215 Cornell Avenue • Montgomery, IL 60538
Technical Assistance: www.braeburnonline.com
Call toll-free: 866-268-5599 (U.S.)
630-844-1968 (Outside the U.S.)

©2013 Braeburn Systems LLC • All Rights Reserved • Made in China.

Model Number: 2020NCW-100-04