Braeburn 6425 Programmable Touchscreen Thermostat Installer Guide

1 Specifications

Attention: To prevent damage to the thermostat, never use a sharp instrument to press the touchscreen keys. Always press keys with your fingers.

Warning: For installation by experienced service technicians only.

Caution: Possible electric shock or damage to equipment can occur. Disconnect power before beginning installation.

This thermostat requires 24 Volt AC Power or 2 properly installed "AA" Alkaline batteries for proper operation. When connecting 24 Volt AC Power, the batteries may be installed as a backup. Thermostat installation and all components of the system shall conform to Class II Circuits per NEC code. For use only as described in this manual. Any other use will void warranty.

Compatibility:

• Single stage heat / cool conventional and heat pump systems
• Conventional systems up to 3 stages of heating and 2 stages of cooling
• Heat pump systems up to 4 stages of heating and 2 stages of cooling
• 250 - 750 millivolt heating 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 (+/- 0.5°C)
• Outdoor Temperature Display Range: -40°–120°F (-40°–49°C)

Humidification Specifications:

• Humidification Control Range: 10% - 50% RH
• Dehumidification Control Range: 40% - 80% RH

Terminations:

Rc, Rh, G, W1 / E / AUX1, W2 / AUX2, W3 / O / B, Y1, Y2, C, L, H, A / D, S1, S2

2 Installation and Wiring

Warning: Disconnect power before beginning installation.

Thermostat Location:

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

Installation Steps:

1. Install the sub-base
2. Provide Power
3. Connect your wires
4. Attach the thermostat to the sub-base

1. Install the Sub-Base:

Remove the sub-base from the thermostat body. Mount the sub-base using the provided anchors for drywall or plaster. Drill 3/16" pilot holes in your desired location.

2. Provide Power:

24VAC Power Terminal (C): For 24 Volt AC power, connect the common side of the transformer to the C terminal on the thermostat sub-base. In dual transformer installations, the transformer common must come from the cooling transformer.

Batteries Installed as Shown: For battery power, insert 2 supplied "AA" type alkaline batteries into the battery compartment located in the rear housing of the thermostat. Ensure correct polarity (+/-) alignment.

3. Connecting Your Wires:

Conventional Systems - Typical Wiring Configurations:

Note: The "System Type" option is configured in the Installer Settings section.

Heat Only or Millivolt:

Set System Type to 11CONV

1 HEAT / 1 COOL Single or Dual Transformer:

Set System Type to 11CONV

2 HEAT / 2 COOL Single or Dual transformer:

Set System Type to 22CONV

3 HEAT / 2 COOL Single or Dual Transformer:

Set System Type to 32CONV

NOTES - Conventional Systems:

• [1] Optional 24 Volt AC common connection.
• [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.

Heat Pump Systems - Typical Wiring Configurations:

Note: The "System Type" option is configured in the Installer Settings section.

1 HEAT / 1 COOL - No Auxiliary Heat:

Set System Type to 11HP

2 HEAT / 2 COOL - No Auxiliary Heat:

Set System Type to 32HP

2 HEAT / 1 COOL - Including Auxiliary Heat:

Set System Type to 22HP

3 HEAT / 2 COOL - Including Auxiliary Heat:

Set System Type to 32HP

4 HEAT / 2 COOL - Including Auxiliary Heat:

Set System Type to 42HP

NOTES - Heat Pump Systems:

• [1] Optional 24 Volt AC common connection.
• [2] O (cool active) or B (heat active) is selected in the Installer Settings menu.
• [3] Install a field supplied jumper between the W2/AUX2 and W1/E/AUX1 terminals if there is no separate emergency heat relay installed.
• [4] If the L terminal is used, the 24 Volt AC common must be connected (C terminal).
• [5] If a separate emergency heat relay is installed, the W1/E/AUX1 terminal should have both the auxiliary heat 1 relay and emergency heat relay connected. Provide disconnect and overload protection as required.

All System Types - Additional Wiring Options:

Note: Additional options are configured in the Installer Settings section.

NOTES - Additional Wiring Options:

• [1] These terminals can be used to connect a Braeburn® indoor or outdoor remote sensor.
• [2] This terminal can be used for: A) Outside air control, B) Control an external dehumidifier, C) Fan speed reduction.
• [3] This terminal can be used to connect an external humidifier.

4. Attaching the thermostat to the sub-base:

Line up the thermostat body with the sub-base and carefully push until it snaps into place. Insert the Quick Reference Card into the slot on top of the thermostat.

Note: This thermostat ships configured as a 1H/1C conventional thermostat. Confirm installer settings. See page 10.

Thermostat Display

1. Room Temperature: Displays the current room temperature.
2. Lock Mode Indicator: Indicates if the thermostat is locked.
3. Set Temperature: Displays the current set point temperature.
4. Humidity Indicator: Indicates when there is a call for humidity.
5. Fan Indicator: Indicates when the system fan is running.
6. Service Indicators: Displays various service/maintenance information.
7. Time of Day: Displays the current time of day.
8. Program Event Indicator: Displays the program event.
9. Day of the Week: Displays the current day of the week.
10. System Status Indicator: Displays information about the status of the system.
11. Hold Mode Indicator: Indicates if the thermostat is in HOLD mode.
12. Low Battery Indicator: Indicates when the batteries need to be replaced.

Thermostat Components:

13. Quick Reference Instructions: Stored in slot located at top of thermostat.
14. SpeedBar®: Increases or decreases settings (time, temperature, etc.).
15. Reset Button: Resets current time, program and user settings.
16. Installer Clear Button: Located on back of thermostat body - clears all settings.
17. Battery Compartment: Located in the back of thermostat.

Thermostat TouchPads

Note: Thermostat TouchPads are located on the left, right and bottom portions of the display screen. They are the "touch sensitive" segments used to adjust your thermostat. Depending on the equipment installed, all touch pads may not show.

4 Installer Settings

The Installer Settings must be properly configured for correct thermostat operation. Settings are menu-driven and non-applicable settings will be skipped.

Accessing Installer Settings:

1. Touch and hold the SYSTEM and CONFIG TouchPads for 3 seconds.
2. Release both buttons; the first installer setting will be displayed.
3. Use the UP or DOWN portion of the SpeedBar® to change settings.
4. Touch NEXT or BACK to navigate between settings; touch RETURN to exit.

*When a Braeburn® outdoor sensor is connected, the thermostat automatically recognizes it.

Note: Additional options such as Service Monitors, Setting the lock code, audible tone, etc., are located in the User Settings. See User manual for details.

NOTES - Installer Settings:

• 1 Only available if Residential profile was selected in option 1.
• 2 Only available if a 2, 3 or 4 stage system type was selected in option 6.
• 3 Only available if a Conventional system was selected in option 6.
• 4 Only available if a 2, 3 or 4 stage Heat Pump system was selected in option 6.
• 5 Only available if a Heat Pump system was selected in option 6.
• 6 Only available if the 24 Volt AC common wire is connected to the C terminal.
• 7 Only available if a programmable profile was selected in option 2.
• 8 Only available if a Braeburn® indoor remote sensor was connected.
• 9 Only available if humidification was enabled in option 23.
• 10 Only available if dependent dehumidification was enabled in option 25.
• 11 Only available if auto changeover was enabled in option 5.
• 12 Only available if a Braeburn outdoor sensor was connected.
• 13 Only available if Commercial profile was selected in option 1.

Detailed Explanation of Installer Settings:

1. Profile: Selects a residential (RES) or commercial (COMM) profile. Residential offers 4 programming events per day; commercial offers 2 events, 7-day programming.
2. Programming Mode: Selects 7-day, 5-2 day (weekday/weekend), or non-programmable mode.
3. Clock Type: Selects 12-hour or 24-hour clock format.
4. Temperature Scale: Selects °F or °C display.
5. Auto Changeover: Enables or disables auto changeover mode, allowing the system to automatically switch between heating and cooling. (See option 28 for Auto Changeover Dead Band).
6. System Type: Selects the system type for installation. Changes here may reset subsequent options.
7. 1st Stage Differential: Selects the 1st stage temperature differential.
8. 2nd Stage Differential: Selects the 2nd stage temperature differential.
9. 3rd Stage Differential: Selects the 3rd stage temperature differential.
10. 4th Stage Differential: Selects the 4th stage temperature differential.
11. 1st Stage Fan Control: Selects gas (HG) or electric (HE) fan control for the 1st stage heat.
12. Emergency Heat Fan Control: Selects electric (HE) or gas (HG) fan control for emergency heat.
13. Reversing Valve (O/B Terminal): Selects the output state of the O/B terminal: O for cool active, B for heat active.
14. Auxiliary Fossil Fuel Heat Pump Control: Controls auxiliary heat operation with the compressor. Select electric (AE AUX) or gas (AG AUX). This can be overridden by setting an auxiliary heat balance point in Option 30.
15. Compressor Power Outage Protection: Enables or disables compressor lockout delay after a power outage. Provides cold weather protection by locking out compressor stages for a period after an outage over 60 minutes.
16. AC Power Interrupt Warning: Enables or disables a warning display when AC power is lost.
17. Short Cycle Protection: Selects the number of minutes the cooling compressor is locked out after turning off. This also applies to heat pump systems in heat mode.
18. Residual Cooling Fan Delay: Selects a delay for the system fan after the cooling compressor turns off, helping to remove residual cool air for efficiency.
19. Circulating Fan Lock: When enabled, only ON and CIRC (Circulation) fan modes are available; AUTO is disabled.
20. Adaptive Recovery Mode (early recovery): Enables or disables ARM™, which turns on heating or cooling before the set-back period ends to reach the programmed temperature.
21. Indoor Remote Sensor Control: If a Braeburn® indoor remote sensor is connected, select thermostat only (I SENS), remote sensor only (E SENS), or combined sensing (A SENS). Outdoor sensors are automatically recognized.
22. Lockout Security Level: Selects keypad lockout level: Level 2 (complete lockout) or Level 1 (SpeedBar® functional for temperature adjustment). Lock code is set in User Settings.
23. Humidification Mode: For external humidifiers. Select OFF, dependent (DEP), or independent (IND) control. DEP controls humidification only during a heating call. IND allows humidification output in heat mode without a heating call. Use IND with caution on systems sensitive to moisture.
24. Auto Humidity Set Point Limit: Selects automatic (AUTO) or manual (MAN) humidity control. AUTO uses outdoor temperature for control; MAN allows manual adjustment.
25. Dehumidification: Selects OFF, dependent (DEP), or independent (IND) dehumidification. DEP keeps cooling on until humidity drops or over-cooling limit is reached. IND activates G (Fan) and D terminals when humidity rises above the set point.
26. Dehumidification Over Cooling Limit: Selects the degrees the system can over-cool to reduce humidity (1.0°F, 2.0°F, or 3.0°F).
27. Dehumidification Fan Speed Control: Selects normally inactive (NI) or normally active (NA) relay for fan speed control.
28. Auto Changeover Dead Band: Selects the dead band (in °F or °C) between heating and cooling set points when Auto Changeover mode is enabled, preventing systems from working against each other.
29. Compressor Balance Point: Locks out compressor heat stage when outside air temperature is below the selected setting (15°F to 50°F).
30. Auxiliary Heat Balance Point: Locks out auxiliary heat stage when outside air temperature exceeds the selected setting (70°F to 40°F). This overrides option 14.
31. Outside Air Intake: Selects economizer control options: disabled (NONE), economizer mode (ECON), or time of day (TOD) mode.
32. Heat Set Point Upper Limit: Selects the upper adjustment limit for the heating set point.
33. Cool Set Point Lower Limit: Selects the lower adjustment limit for the cooling set point.

5 System Testing

Warning:

• Do not short terminals on the gas valve or control board to test the thermostat; this can damage the unit and void the warranty.
• Do not select COOL mode if the outside temperature is below 50°F (10°C), as this may damage the cooling system or cause injury.
• This thermostat has an automatic compressor protection feature to prevent damage from short cycling. Account for this delay during testing. The compressor delay can be bypassed by pressing the reset button on the front of the thermostat, which resets user settings but retains installer settings.

Testing Procedure:

1. Touch SYSTEM until the thermostat is in HEAT mode. Raise the set temperature at least 3°F above the room temperature. The system should start within seconds. (Fan may not start immediately with gas heating).
2. Touch SYSTEM to enter OFF mode. Allow the heating system to shut down completely.
3. Touch SYSTEM until the thermostat is in COOL mode. Lower the set temperature at least 3°F below the room temperature. The system should start within seconds (unless compressor short cycle protection is active).
4. Touch SYSTEM to enter OFF mode. Allow the cooling system to shut down completely.
5. Touch FAN to enter FAN ON mode. The system fan should start within seconds.
6. Touch FAN to enter FAN AUTO mode. Allow the system fan to turn off.
7. If controlling auxiliary equipment (humidifier, economizer, etc.), adjust thermostat settings to test these devices.

Limited Warranty

When installed by a professional contractor, this product is backed by a 5-year limited warranty. Limitations apply. For full warranty details, visit www.braeburnonline.com/warranty, call 866.268.5599, or write to Braeburn Systems LLC, 2215 Cornell Avenue, Montgomery, IL 60538.

Store this manual for future reference.

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