Braeburn 1025NC Thermostat Operation Manual

The Braeburn 1025NC is a non-programmable thermostat designed for single-stage heat-only systems, including 250–750 millivolt heat-only systems and 2 or 3 wire hydronic zone systems. It features a large display with bright blue backlight, easy operation, and precise temperature control, ideal for residential applications. Below are the key specifications and operation instructions.

1. Key Specifications 2. Operation Instructions 2.1. Initial Setup 2.2. Operating the Thermostat 2.3. Temperature Display Adjustment 2.4. Troubleshooting 3. Installation Instructions 3.1. Remove Old Thermostat 3.2. Installing New Thermostat 3.3. Battery Location 3.4. Power Options

Key Specifications

Type: Non-programmable thermostat
Compatibility:
- Single-stage heat-only systems
- 250–750 millivolt heat-only systems
- 2 or 3 wire hydronic zone systems
- Not compatible with cooling systems, multi-stage systems, or systems exceeding 30 VAC
Power Source:
- Battery: Two "AA" alkaline batteries (included)
- Hardwired: 18-30 VAC with common (C) wire
Electrical Rating:
- Terminal Load: 1 amp maximum per terminal
- Setpoint Range: 45°F to 90°F (7°C to 32°C)
- Accuracy: +/- 1°F (+/- 0.5°C)
Display: Large LCD display with bright blue backlight
Operating Conditions:
- Ambient: 32°F to 105°F (0°C to 41°C)
- Humidity: 90% non-condensing max
Dimensions: 3.70” H x 5.16” W x 1.38” D
Features:
- Large easy-to-read display with backlight
- Adjustable temperature differential
- Low battery indicator
- Compressor short cycle protection (if applicable)
Thermostat Configuration Options:
- Heat-only systems
- Fahrenheit or Celsius display
- Gas or Electric heat
- Adjustable differentials (0.5°F, 1°F, 2°F)

Operation Instructions

Initial Setup

1. Insert Batteries: Install two "AA" alkaline batteries in the rear compartment, ensuring correct polarity.
2. Power On: If hardwired, connect 18-30 VAC to the C terminal. The display should show the current temperature.
3. Configure System:

Set installer switches on the back: F/C for temperature units, HG/HE for gas/electric heat.
Press RESET after changes.
Access User Options by holding UP/DOWN arrows for 3 seconds to set differential.

Operating the Thermostat

1. Select Mode: Use SYSTEM switch to choose HEAT or OFF.
2. Fan Mode: Use FAN switch to choose AUTO or ON (if applicable).
3. Adjust Temperature: Press UP/DOWN arrows to set desired temperature.
4. Verify Operation: In HEAT, set above room temp; "HEAT ON" displays.
Note: No programming features as this is non-programmable.

Temperature Display Adjustment

Adjust temperature scale (°F/°C) via installer switches. Set differential in User Options (hold UP/DOWN for 3 seconds): 0.5°F, 1°F, or 2°F. Use a separate thermometer to verify. Relocate if near drafts or heat sources.

Troubleshooting

No Display: Check battery polarity or replace batteries. Verify 24V power if hardwired. Press RESET.
No Heat: Ensure mode is HEAT, setpoint appropriate, power on. Check wiring, breakers.
Fan Runs Constantly: Set FAN to AUTO, not ON.
Inaccurate Temperature: Ensure proper location away from drafts/heat sources. Adjust differential.
Erratic Operation: Reset thermostat. Check for voltage issues.
Low Battery: Replace batteries when indicator shows.
Buttons Not Working: Replace batteries and reset.

Installation Instructions

Warning: Turn off power before installation. For experienced technicians only. Conform to local codes. Do not short terminals to test.

Remove Old Thermostat

Turn off power. Remove old thermostat, label wires for terminals. Handle mercury thermostats carefully and dispose properly.

Installing New Thermostat

Separate thermostat from sub-base.
Mount sub-base on wall, mark and drill holes, use anchors if needed.
Connect wires to terminals per system type (e.g., R for power, W1 for heat, G for fan, C for common, V3 for hydronic valve).
Set installer switches (F/C, HG/HE).
Push excess wire back, plug hole with insulation to prevent drafts.
Snap thermostat onto sub-base. Insert quick reference card.

Battery Location

Batteries in rear compartment. Replace when low battery indicator shows. Use alkaline "AA" batteries.
If unoccupied for long periods, replace batteries before leaving.

Power Options

Use 24V AC for primary power with batteries as backup, or batteries only.

Thermostat Power Method	Description
Battery Powered	Runs on two "AA" batteries.
Hardwired with Battery Backup	Runs on 18-30V AC from transformer with batteries as backup.

Caution: Ensure correct polarity for batteries. Do not short terminals during testing.