Braeburn 1020NC Thermostat User Manual
Quick guide for the Braeburn 1020NC non-programmable thermostat. Includes installation specifications, terminal wiring designations, and operating features.
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This document provides essential information for the Braeburn 1020NC non-programmable thermostat. It covers technical specifications, wiring terminal designations, and key operating features to assist with installation and daily use.
Product Overview
The Braeburn 1020NC is a single-stage heat/cool thermostat designed for conventional and heat pump systems. It features a large 2 sq. in. display with a bright blue backlight, adjustable temperature limits, and permanent memory to retain user settings. The unit is powered by either 24V AC or two AA alkaline batteries.

Wiring and Installation
The thermostat is designed for mounting to a horizontal junction box. Ensure all wiring is connected according to the terminal designations:

- Rh: Heat 24 Volt AC Transformer
- Rc: Cool 24 Volt AC Transformer
- O: Reversing Valve Cool Active
- B: Reversing Valve Heat Active
- Y1: Cool Control
- W1: Heat Control
- G: Fan Control
- C: Transformer Common
Operation and Settings
The thermostat includes several user-accessible controls:
- Reset Button: Front access button to return user settings to default values.
- F/C Switch: Allows toggling between Fahrenheit and Celsius temperature scales.
- Gas/Electric Fan Switch: Configures the fan operation based on the heating system type.
- Low Battery Indication: Alerts the user when batteries require replacement.
Technical Specifications
- Power Source: 24V AC (18-30V AC) or 3.0V DC (2 AA Alkaline batteries).
- Electrical Rating: 1 amp maximum load per terminal; 3 amp total maximum load.
- Control Range: 45° to 90°F (7° to 32°C).
- Display Range: 40° to 99°F (5° to 37°C).
- Accuracy: +/- 1°F (+/- 0.5°C).
- Operating Humidity: 5% to 95% relative humidity.
Compatibility
The 1020NC is compatible with:
- Single-stage gas, oil, or electric systems.
- Single-stage heat pump systems.
- 250mv – 750mv millivolt heating systems.
Manufacturer information
Braeburn Systems LLC
Practical help
Common problems
Replace the two AA alkaline batteries.
Press the front access reset button to return the thermostat to default settings.
Before use
- Verify the system is a single-stage gas, oil, electric, or heat pump system.
- Ensure power source is either 24V AC or 2x AA batteries.
- Check that the wiring matches the terminal designations (Rh, Rc, O, B, Y1, W1, G, C).
- Confirm the Gas/Electric fan switch is set correctly for your system.
Specs in practice
- Control Range
- The temperature range the thermostat can maintain (45° to 90°F).
- Electric Rating
- Maximum load is 1A per terminal and 3A total for all terminals.
- Temperature Differential
- The variance allowed before the system cycles (.5°, 1°, or 2° F).
Images and diagrams
- The terminal block diagram shows the specific connections for heating and cooling transformers, reversing valves, and fan control.
Model compatibility
- Compatible with single-stage gas, oil, or electric systems.
- Compatible with single-stage heat pump systems.
- Compatible with 250mv – 750mv millivolt heating systems.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.