Resideo T812A1002 Thermostat
The Resideo T812A1002 Thermostat is a low-voltage, mercury-free mechanical controller engineered for 1 stage heat only applications. Featuring a snap acting SPST switch, this unit provides reliable control for 24V gas or oil heating systems, including floor and wall furnaces. Designed with a 45-95 degree temperature range and accurate to +/- 3 degrees, it ensures consistent terminal cycling without the need for leveling during installation. This Premier White heating thermostat functions as the direct replacement for PSM30SA, making it a critical stock item for retrofitting older analog systems. The non-programmable 1H thermostat maintains a 5-90% RH operating range and is compatible with most low voltage heat only circuits using R and W terminations. The package includes the essential wallplate, mounting hardware, and a resistor assembly to ensure electrical compatibility across various millivolt and 18-30Vac valve configurations.
Key Benefits- Universal Retrofit Compatibility: Serves as the primary T812A1002 replacement for discontinued snap-action and mercury models.
- Mercury-Free Construction: Complies with environmental regulations while maintaining classic mechanical reliability.
- Contractor-Grade Durability: The SPST switching action minimizes arcing and ensures long-term contact integrity in single stage heating setups.
- Simplified Installation: Integrated wallplate and included anchors allow for how to install T812A1002 procedures to be completed in minutes.
Is the Resideo T812A1002 compatible with cooling systems?
No, this model is strictly for heat-only applications. For HVAC systems requiring air conditioning control, a 1H/1C or 2H/2C model is required.
Does this thermostat require a C-wire (Common)?
No, the T812A1002 wiring typically only requires two wires (R and W), as it is a mechanical snap-action switch that does not require auxiliary power for a display.
Can I use this on a millivolt floor furnace?
Yes, the low voltage thermostat is rated for 750mV and 18-30Vac systems, making it suitable for older gravity or millivolt heating equipment.
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 T812A1002 Thermostat
The Resideo T812A1002 Thermostat is a low-voltage, mercury-free mechanical controller engineered for 1 stage heat only applications. Featuring a snap acting SPST switch, this unit provides reliable control for 24V gas or oil heating systems, including floor and wall furnaces. Designed with a 45-95 degree temperature range and accurate to +/- 3 degrees, it ensures consistent terminal cycling without the need for leveling during installation. This Premier White heating thermostat functions as the direct replacement for PSM30SA, making it a critical stock item for retrofitting older analog systems. The non-programmable 1H thermostat maintains a 5-90% RH operating range and is compatible with most low voltage heat only circuits using R and W terminations. The package includes the essential wallplate, mounting hardware, and a resistor assembly to ensure electrical compatibility across various millivolt and 18-30Vac valve configurations.
Key Benefits- Universal Retrofit Compatibility: Serves as the primary T812A1002 replacement for discontinued snap-action and mercury models.
- Mercury-Free Construction: Complies with environmental regulations while maintaining classic mechanical reliability.
- Contractor-Grade Durability: The SPST switching action minimizes arcing and ensures long-term contact integrity in single stage heating setups.
- Simplified Installation: Integrated wallplate and included anchors allow for how to install T812A1002 procedures to be completed in minutes.
Is the Resideo T812A1002 compatible with cooling systems?
No, this model is strictly for heat-only applications. For HVAC systems requiring air conditioning control, a 1H/1C or 2H/2C model is required.
Does this thermostat require a C-wire (Common)?
No, the T812A1002 wiring typically only requires two wires (R and W), as it is a mechanical snap-action switch that does not require auxiliary power for a display.
Can I use this on a millivolt floor furnace?
Yes, the low voltage thermostat is rated for 750mV and 18-30Vac systems, making it suitable for older gravity or millivolt heating equipment.
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.
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Product Information
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Description
The Resideo T812A1002 Thermostat is a low-voltage, mercury-free mechanical controller engineered for 1 stage heat only applications. Featuring a snap acting SPST switch, this unit provides reliable control for 24V gas or oil heating systems, including floor and wall furnaces. Designed with a 45-95 degree temperature range and accurate to +/- 3 degrees, it ensures consistent terminal cycling without the need for leveling during installation. This Premier White heating thermostat functions as the direct replacement for PSM30SA, making it a critical stock item for retrofitting older analog systems. The non-programmable 1H thermostat maintains a 5-90% RH operating range and is compatible with most low voltage heat only circuits using R and W terminations. The package includes the essential wallplate, mounting hardware, and a resistor assembly to ensure electrical compatibility across various millivolt and 18-30Vac valve configurations.
Key Benefits- Universal Retrofit Compatibility: Serves as the primary T812A1002 replacement for discontinued snap-action and mercury models.
- Mercury-Free Construction: Complies with environmental regulations while maintaining classic mechanical reliability.
- Contractor-Grade Durability: The SPST switching action minimizes arcing and ensures long-term contact integrity in single stage heating setups.
- Simplified Installation: Integrated wallplate and included anchors allow for how to install T812A1002 procedures to be completed in minutes.
Is the Resideo T812A1002 compatible with cooling systems?
No, this model is strictly for heat-only applications. For HVAC systems requiring air conditioning control, a 1H/1C or 2H/2C model is required.
Does this thermostat require a C-wire (Common)?
No, the T812A1002 wiring typically only requires two wires (R and W), as it is a mechanical snap-action switch that does not require auxiliary power for a display.
Can I use this on a millivolt floor furnace?
Yes, the low voltage thermostat is rated for 750mV and 18-30Vac systems, making it suitable for older gravity or millivolt heating equipment.
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.
