Description
The Braeburn 1025NC is a simple, non-programmable digital thermostat for heat-only applications that still need reliable temperature control and clear readout. It’s a solid choice for single-stage furnaces, boilers, or hydronic zones, especially in rentals or light commercial spaces. It supports conventional, millivolt, and 2- or 3-wire hydronic systems with adjustable setpoint limits and dual power options.
Key Features & Benefits
Heat-Only Versatility
Works on single-stage heat-only systems, 250–750 mV millivolt heaters, and 2- or 3-wire hydronic zone systems, so one stat can cover a mix of older boilers, wall furnaces, and baseboard loops on the same property.
Compact Backlit Digital Display
A 2 sq. in. digital display with bright blue backlight gives a clear temperature readout in a small builder-series footprint.
Dual Power With Memory Protection
Can run on 24 VAC or two AA batteries, and non-volatile memory holds user settings through power loss, with low-battery indication and a front reset button for quick service.
Adjustable Temperature Limits
Built-in setpoint limiting lets you cap high and low temperatures, helping prevent tenants or staff from driving the heat to extremes that waste energy or cause comfort complaints.
Builder-Friendly Replacement For Older Stats
Designed as a drop-in replacement for many legacy mechanical and early digital heat-only thermostats from Honeywell and Emerson, simplifying upgrades on retrofit jobs.
Specifications
Application: non-programmable; heat-only systems
System Compatibility:
- Single-stage conventional heat-only systems
- 250–750 mV millivolt heat-only systems
- 2- or 3-wire hydronic zone systems
Power Options:
- 24 VAC (18–30 VAC)
- 3.0 VDC from two “AA” alkaline batteries (can be used as primary or backup)
Electrical Rating: 24 VAC; 1 A maximum load per terminal (2 A total in some distributor specs)
Control Temperature Range: 45–90°F (7–32°C)
Display Temperature Range: 40–99°F (5–37°C)
Temperature Accuracy: ±1°F (±0.5°C)
Terminals (1025NC): R, G, W1, V3, C
Changeover: Manual system switch (HEAT / OFF)
Operating Humidity: 5–95% RH, non-condensing
Storage Temperature: 14–140°F (-10–60°C)
Dimensions: 3.62″ × 4.72″ × 1.38″
Voltage (Control): 24 VAC control, low-voltage thermostat
Accessories: 2920 vertical J-box wall plate; 2950 universal wall plate; 5970 universal thermostat guard
Replaces
Honeywell: T8400, T87F, T810C, T810D, T812A, T812B, T822, TH100
Emerson: 1F51, 1E30, 1E31
