
Tekmar Controls 553 Thermostat
The Tekmar 553 Thermostat is a versatile 24V AC controls solution designed for advanced hydronic and forced air integration. Operating as a standalone unit or within TekmarNet 2 (tN2) and tN2/tN4 communication bus systems, this programmable touchscreen thermostat manages two stages of heating, one stage of cooling, and full fan control. Contractors utilize the 553 for its precise relative humidity control and auto cycling capabilities, ensuring consistent indoor air quality. The unit includes two auxiliary sensor inputs, allowing for remote indoor sensing, floor temperature monitoring, or outdoor air temperature integration. This level of granular control is essential for preventing short-cycling in high-mass radiant systems and optimizing heat pump performance. By leveraging Pulse Width Modulation (PWM) logic, the 553 minimizes temperature swings, providing the thermal stability required in modern multi-zone HVACR environments.
- System Versatility: Seamlessly bridges tN2 and tN4 bus communications or functions as a reliable standalone controller.
- Integrated Humidity Management: Built-in humidification and dehumidification logic eliminates the need for separate humidistats.
- Advanced Sensor Support: Two auxiliary inputs support floor sensors to maintain surface temperature limits in radiant applications.
- Intuitive Interface: Large touchscreen display simplifies programming schedules and adjusting setpoints for end-users and technicians.
Common Installation Questions
Can the Tekmar 553 control an auxiliary heat source?
Yes, the 553 is designed to sequence two heating stages, making it suitable for heat pump systems with auxiliary electric or gas backup, as well as multi-stage radiant setups.
What type of wiring is required for the communication bus?
When integrated into a TekmarNet system, the unit utilizes a non-polarized two-wire connection for tN2 or a four-wire connection for tN4, reducing labor time during retrofits.
Does this unit support floor temperature limiting?
By installing a 079 or 071 floor sensor into one of the auxiliary inputs, the thermostat can be configured to protect sensitive flooring materials from overheating while maintaining ambient air targets.
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.
Tekmar Controls 553 Thermostat
The Tekmar 553 Thermostat is a versatile 24V AC controls solution designed for advanced hydronic and forced air integration. Operating as a standalone unit or within TekmarNet 2 (tN2) and tN2/tN4 communication bus systems, this programmable touchscreen thermostat manages two stages of heating, one stage of cooling, and full fan control. Contractors utilize the 553 for its precise relative humidity control and auto cycling capabilities, ensuring consistent indoor air quality. The unit includes two auxiliary sensor inputs, allowing for remote indoor sensing, floor temperature monitoring, or outdoor air temperature integration. This level of granular control is essential for preventing short-cycling in high-mass radiant systems and optimizing heat pump performance. By leveraging Pulse Width Modulation (PWM) logic, the 553 minimizes temperature swings, providing the thermal stability required in modern multi-zone HVACR environments.
- System Versatility: Seamlessly bridges tN2 and tN4 bus communications or functions as a reliable standalone controller.
- Integrated Humidity Management: Built-in humidification and dehumidification logic eliminates the need for separate humidistats.
- Advanced Sensor Support: Two auxiliary inputs support floor sensors to maintain surface temperature limits in radiant applications.
- Intuitive Interface: Large touchscreen display simplifies programming schedules and adjusting setpoints for end-users and technicians.
Common Installation Questions
Can the Tekmar 553 control an auxiliary heat source?
Yes, the 553 is designed to sequence two heating stages, making it suitable for heat pump systems with auxiliary electric or gas backup, as well as multi-stage radiant setups.
What type of wiring is required for the communication bus?
When integrated into a TekmarNet system, the unit utilizes a non-polarized two-wire connection for tN2 or a four-wire connection for tN4, reducing labor time during retrofits.
Does this unit support floor temperature limiting?
By installing a 079 or 071 floor sensor into one of the auxiliary inputs, the thermostat can be configured to protect sensitive flooring materials from overheating while maintaining ambient air targets.
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
Shipping & Returns
Shipping & Returns
Description
The Tekmar 553 Thermostat is a versatile 24V AC controls solution designed for advanced hydronic and forced air integration. Operating as a standalone unit or within TekmarNet 2 (tN2) and tN2/tN4 communication bus systems, this programmable touchscreen thermostat manages two stages of heating, one stage of cooling, and full fan control. Contractors utilize the 553 for its precise relative humidity control and auto cycling capabilities, ensuring consistent indoor air quality. The unit includes two auxiliary sensor inputs, allowing for remote indoor sensing, floor temperature monitoring, or outdoor air temperature integration. This level of granular control is essential for preventing short-cycling in high-mass radiant systems and optimizing heat pump performance. By leveraging Pulse Width Modulation (PWM) logic, the 553 minimizes temperature swings, providing the thermal stability required in modern multi-zone HVACR environments.
- System Versatility: Seamlessly bridges tN2 and tN4 bus communications or functions as a reliable standalone controller.
- Integrated Humidity Management: Built-in humidification and dehumidification logic eliminates the need for separate humidistats.
- Advanced Sensor Support: Two auxiliary inputs support floor sensors to maintain surface temperature limits in radiant applications.
- Intuitive Interface: Large touchscreen display simplifies programming schedules and adjusting setpoints for end-users and technicians.
Common Installation Questions
Can the Tekmar 553 control an auxiliary heat source?
Yes, the 553 is designed to sequence two heating stages, making it suitable for heat pump systems with auxiliary electric or gas backup, as well as multi-stage radiant setups.
What type of wiring is required for the communication bus?
When integrated into a TekmarNet system, the unit utilizes a non-polarized two-wire connection for tN2 or a four-wire connection for tN4, reducing labor time during retrofits.
Does this unit support floor temperature limiting?
By installing a 079 or 071 floor sensor into one of the auxiliary inputs, the thermostat can be configured to protect sensitive flooring materials from overheating while maintaining ambient air targets.
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.












