Resideo TH135-01-B Thermostat
The Resideo TH135-01-B is a contractor-grade non-programmable thermostat engineered for precise 1-heat control in hydronic heating and low-voltage forced air systems. Operating on a 24Vac or 24Vdc power supply, this electronic unit features a high-density vertical mount design, making it an ideal retrofit for aging mechanical thermostats. It utilizes a thermistor sensing element to maintain ±1°F temperature accuracy, significantly reducing temperature swings common in older bimetal controls. Technicians can field-configure the device for 3 or 4 cycles per hour (CPH) via internal dip switches to optimize system performance, whether controlling a standard furnace, a 24V gas valve, or a circulating pump. For hydronic applications, the integrated pump protection feature automatically cycles the pump for one minute every 24 hours to prevent seasonal seizure. The LCD screen provides clear readouts in 0.1-degree increments, supported by a 60-day low-battery warning and remote input for telephone-operated temperature mode changes when paired with a compatible controller.
Key Benefits for the HVAC Contractor- System Versatility: Fully compatible with 24V hydronic systems, millivolt heating setups, and gas or oil furnaces.
- Cycle Rate Optimization: Selectable 15 or 20-minute heating cycles ensure optimal comfort and efficiency for varying load requirements.
- Advanced Protection: Built-in circulating pump protection ensures long-term reliability for hot water heating systems.
- Battery-Powered Flexibility: Operates on 2 AA batteries, allowing for installation in areas without a dedicated common wire (C-wire).
- Preset Modes: Dedicated buttons for Comfort, Economy, and Vacation allow for quick manual temperature overrides.
Is the Resideo TH135-01-B compatible with millivolt systems?
Yes, this low voltage thermostat is rated for millivolt applications, provided the system is a 1-heat only configuration.
What is the maximum load the internal relay can handle?
The unit is rated for a resistive load of 5A at 24V and an inductive load of 2A at 24V.
How do I change the temperature scale between Celsius and Fahrenheit?
The scale is field-selectable via a dip switch located on the back of the thermostat module. Note that changing this scale requires resetting your temperature presets.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Resideo TH135-01-B Thermostat
The Resideo TH135-01-B is a contractor-grade non-programmable thermostat engineered for precise 1-heat control in hydronic heating and low-voltage forced air systems. Operating on a 24Vac or 24Vdc power supply, this electronic unit features a high-density vertical mount design, making it an ideal retrofit for aging mechanical thermostats. It utilizes a thermistor sensing element to maintain ±1°F temperature accuracy, significantly reducing temperature swings common in older bimetal controls. Technicians can field-configure the device for 3 or 4 cycles per hour (CPH) via internal dip switches to optimize system performance, whether controlling a standard furnace, a 24V gas valve, or a circulating pump. For hydronic applications, the integrated pump protection feature automatically cycles the pump for one minute every 24 hours to prevent seasonal seizure. The LCD screen provides clear readouts in 0.1-degree increments, supported by a 60-day low-battery warning and remote input for telephone-operated temperature mode changes when paired with a compatible controller.
Key Benefits for the HVAC Contractor- System Versatility: Fully compatible with 24V hydronic systems, millivolt heating setups, and gas or oil furnaces.
- Cycle Rate Optimization: Selectable 15 or 20-minute heating cycles ensure optimal comfort and efficiency for varying load requirements.
- Advanced Protection: Built-in circulating pump protection ensures long-term reliability for hot water heating systems.
- Battery-Powered Flexibility: Operates on 2 AA batteries, allowing for installation in areas without a dedicated common wire (C-wire).
- Preset Modes: Dedicated buttons for Comfort, Economy, and Vacation allow for quick manual temperature overrides.
Is the Resideo TH135-01-B compatible with millivolt systems?
Yes, this low voltage thermostat is rated for millivolt applications, provided the system is a 1-heat only configuration.
What is the maximum load the internal relay can handle?
The unit is rated for a resistive load of 5A at 24V and an inductive load of 2A at 24V.
How do I change the temperature scale between Celsius and Fahrenheit?
The scale is field-selectable via a dip switch located on the back of the thermostat module. Note that changing this scale requires resetting your temperature presets.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Shipping & Returns
Description
The Resideo TH135-01-B is a contractor-grade non-programmable thermostat engineered for precise 1-heat control in hydronic heating and low-voltage forced air systems. Operating on a 24Vac or 24Vdc power supply, this electronic unit features a high-density vertical mount design, making it an ideal retrofit for aging mechanical thermostats. It utilizes a thermistor sensing element to maintain ±1°F temperature accuracy, significantly reducing temperature swings common in older bimetal controls. Technicians can field-configure the device for 3 or 4 cycles per hour (CPH) via internal dip switches to optimize system performance, whether controlling a standard furnace, a 24V gas valve, or a circulating pump. For hydronic applications, the integrated pump protection feature automatically cycles the pump for one minute every 24 hours to prevent seasonal seizure. The LCD screen provides clear readouts in 0.1-degree increments, supported by a 60-day low-battery warning and remote input for telephone-operated temperature mode changes when paired with a compatible controller.
Key Benefits for the HVAC Contractor- System Versatility: Fully compatible with 24V hydronic systems, millivolt heating setups, and gas or oil furnaces.
- Cycle Rate Optimization: Selectable 15 or 20-minute heating cycles ensure optimal comfort and efficiency for varying load requirements.
- Advanced Protection: Built-in circulating pump protection ensures long-term reliability for hot water heating systems.
- Battery-Powered Flexibility: Operates on 2 AA batteries, allowing for installation in areas without a dedicated common wire (C-wire).
- Preset Modes: Dedicated buttons for Comfort, Economy, and Vacation allow for quick manual temperature overrides.
Is the Resideo TH135-01-B compatible with millivolt systems?
Yes, this low voltage thermostat is rated for millivolt applications, provided the system is a 1-heat only configuration.
What is the maximum load the internal relay can handle?
The unit is rated for a resistive load of 5A at 24V and an inductive load of 2A at 24V.
How do I change the temperature scale between Celsius and Fahrenheit?
The scale is field-selectable via a dip switch located on the back of the thermostat module. Note that changing this scale requires resetting your temperature presets.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
