Tekmar Controls 521 Thermostat
The Tekmar 521 Programmable Thermostat is a versatile microprocessor-based control designed for precise single-stage heating, two-stage heating with fan, or one-stage heating/one-stage cooling applications. Engineered for 24V AC/DC systems, this unit supports hydronic radiant floor heating, baseboard convection, and forced air systems. The 7-day programmable schedule allows for four distinct events per day, optimizing energy cycles without compromising occupant comfort. Its Pulse Width Modulation (PWM) logic prevents temperature overshoot in high-mass radiant systems, ensuring stable thermal equilibrium. The large digital display provides real-time feedback on current temperature and setpoints, while the backlight ensures visibility in mechanical rooms. This thermostat is compatible with remote sensors (076 or 077), allowing for slab sensing or remote air temperature monitoring. Whether replacing an existing digital thermostat or performing a new installation, its slim profile and intuitive interface simplify the setup for professional contractors.
Key Benefits for Technicians:
- Universal compatibility with hot water heating and forced air cooling systems.
- Slab sensing capability prevents floor overheating and protects sensitive flooring materials.
- Advanced PWM algorithms reduce cycling and improve component longevity.
- Flexible 7-day programming allows for tailored setback schedules in residential or light commercial settings.
- Simple low-voltage wiring facilitates quick installation on standard electrical boxes.
Common Installation and Operation Questions:
Can this thermostat control both a boiler and an air conditioner?
Yes, the Tekmar 521 is designed to manage 1-stage heating and 1-stage cooling configurations using a fan relay, making it suitable for mixed hydronic and forced air systems.
Does this unit support floor temperature limits?
When paired with an optional Tekmar 072 or 073 slab sensor, the thermostat can monitor and limit minimum and maximum floor temperatures.
Is this thermostat compatible with 2-wire heating systems?
The unit requires 24VAC power to operate; however, it can control traditional 2-wire heating valves or relays once the common wire is established.
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 521 Thermostat
The Tekmar 521 Programmable Thermostat is a versatile microprocessor-based control designed for precise single-stage heating, two-stage heating with fan, or one-stage heating/one-stage cooling applications. Engineered for 24V AC/DC systems, this unit supports hydronic radiant floor heating, baseboard convection, and forced air systems. The 7-day programmable schedule allows for four distinct events per day, optimizing energy cycles without compromising occupant comfort. Its Pulse Width Modulation (PWM) logic prevents temperature overshoot in high-mass radiant systems, ensuring stable thermal equilibrium. The large digital display provides real-time feedback on current temperature and setpoints, while the backlight ensures visibility in mechanical rooms. This thermostat is compatible with remote sensors (076 or 077), allowing for slab sensing or remote air temperature monitoring. Whether replacing an existing digital thermostat or performing a new installation, its slim profile and intuitive interface simplify the setup for professional contractors.
Key Benefits for Technicians:
- Universal compatibility with hot water heating and forced air cooling systems.
- Slab sensing capability prevents floor overheating and protects sensitive flooring materials.
- Advanced PWM algorithms reduce cycling and improve component longevity.
- Flexible 7-day programming allows for tailored setback schedules in residential or light commercial settings.
- Simple low-voltage wiring facilitates quick installation on standard electrical boxes.
Common Installation and Operation Questions:
Can this thermostat control both a boiler and an air conditioner?
Yes, the Tekmar 521 is designed to manage 1-stage heating and 1-stage cooling configurations using a fan relay, making it suitable for mixed hydronic and forced air systems.
Does this unit support floor temperature limits?
When paired with an optional Tekmar 072 or 073 slab sensor, the thermostat can monitor and limit minimum and maximum floor temperatures.
Is this thermostat compatible with 2-wire heating systems?
The unit requires 24VAC power to operate; however, it can control traditional 2-wire heating valves or relays once the common wire is established.
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 521 Programmable Thermostat is a versatile microprocessor-based control designed for precise single-stage heating, two-stage heating with fan, or one-stage heating/one-stage cooling applications. Engineered for 24V AC/DC systems, this unit supports hydronic radiant floor heating, baseboard convection, and forced air systems. The 7-day programmable schedule allows for four distinct events per day, optimizing energy cycles without compromising occupant comfort. Its Pulse Width Modulation (PWM) logic prevents temperature overshoot in high-mass radiant systems, ensuring stable thermal equilibrium. The large digital display provides real-time feedback on current temperature and setpoints, while the backlight ensures visibility in mechanical rooms. This thermostat is compatible with remote sensors (076 or 077), allowing for slab sensing or remote air temperature monitoring. Whether replacing an existing digital thermostat or performing a new installation, its slim profile and intuitive interface simplify the setup for professional contractors.
Key Benefits for Technicians:
- Universal compatibility with hot water heating and forced air cooling systems.
- Slab sensing capability prevents floor overheating and protects sensitive flooring materials.
- Advanced PWM algorithms reduce cycling and improve component longevity.
- Flexible 7-day programming allows for tailored setback schedules in residential or light commercial settings.
- Simple low-voltage wiring facilitates quick installation on standard electrical boxes.
Common Installation and Operation Questions:
Can this thermostat control both a boiler and an air conditioner?
Yes, the Tekmar 521 is designed to manage 1-stage heating and 1-stage cooling configurations using a fan relay, making it suitable for mixed hydronic and forced air systems.
Does this unit support floor temperature limits?
When paired with an optional Tekmar 072 or 073 slab sensor, the thermostat can monitor and limit minimum and maximum floor temperatures.
Is this thermostat compatible with 2-wire heating systems?
The unit requires 24VAC power to operate; however, it can control traditional 2-wire heating valves or relays once the common wire is established.
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.
