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Tekmar makes it easy to find a device that can streamline your boiler's operations and improve its efficiency.

A Boiler's Best Friend

An Intro to Tekmar Controls

Product Expert
A Boiler's Best Friend

Getting the most out of a hydronic heating system can be difficult without a good control. Luckily, Tekmar has spent nearly three decades innovating and refining hydronic controls to the point where it's easy to find a device that can streamline your system's operations and improve its efficiency. Let's take a look at three of the most popular applications for Tekmar controls.

The tekmar 257 is a boiler control system that ensures optimal performance of a hydronic heating system. This Tekmar Boiler control is capable of operating multiple boilers in symphony, conducting the flow of water to ensure a harmonious distribution of heat.

Benefits of Two-Stage Control

257
The Tekmar 257 features two stage control. This means the 257 can operate the attached boiler in either a "low" or "high" gear. The thermostat communicates with the 257, and if temperatures in a room drop below the set point too quickly or for too prolonged a time, the 257 can shift into high gear.

This two stage operation allows the system to provide more even heat with a quicker heat-up time. The Tekmar 257 two stage control also lessens the cold pockets often found within rooms. And just as each coin has two sides, if the system should require less heat—say in the warmer fall months—the Tekmar 257 can keep operation in the low stage to conserve energy.

Equal Runtime Rotation
The Tekmar 257 also boasts equal runtime rotation technology. As the 257 is often used to control groups of boilers, this runtime rotation measures the amount of time each boiler in the system has run.

If one boiler operates more than the other, the Tekmar 257 will power down the overused boiler and instead draw heat from the under-used boiler. This way both boilers in the system are likely to last longer and provide more efficient heat.

Ease of Use
The Tekmar 257 features a no-nonsense interface with an easy-to-read LCD screen and large buttons. The 257 is ideal for controlling hotel or apartment building boiler systems. The 257 can also tailor performance to combi systems which provide both heat and domestic hot water to ensure an ample supply of both.

Utilizing Mixing Pumps with Hydronic Systems for Better Efficiency
356
The Tekmar 356 Mixing Control unit regulates mixing pumps in hydronic heating systems. This ability to fine tune the temperature at which a hydronic system runs allows a property owner to fine tune the comfort of their space. The Tekmar mixing control unit achieves its superior control over mixing pumps through an outdoor temperature reset sensor.

In layman's terms, outdoor reset systems monitor weather conditions both in and outside of the home. So when outdoor temperatures are more frigid, the tekmar 356 can direct the mixing pump to raise the temperature of the hydronic fluid piped to a home's radiators. This provides more heat to the home. By the same token, when outdoor temperatures are warmer, the 356 can direct the mixing pump to run cool in order to maximize energy efficiency. This variable operation of the mixing pump in regards to outdoor temperature can boost a boiler's overall efficiency to levels unheralded without such control.

Built for the Average User
Like the 257, the Tekmar 356 is designed for simple use. A large screen and three simple to use buttons allow a homeowner or property owner to get maximum performance from their boiler without a PhD in hydronics. Once installed, the unit quickly sets up for simple use. Even the most basic controls on the 356 allow a homeowner to tailor a boiler to their personal tastes.

For intricate cases, the Tekmar 356's advanced controls provide all the finesse necessary. If these controls weren't already enough, the 356 also features a smart diagnostic routine which checks to ensure proper operation of each component in the system.

The ability to modulate boiler temperature with precision makes the 356 perfect for a wide range of heating applications including radiant systems and commercial baseboard heating.

Variations for Colder-Weather Climates
664
For those in cold and icy climates, Tekmar offers the 664 snow detector/melting control unit. The name is fairly self-explanatory here; the 664 can operate snow melt equipment beneath up to two outdoor slab surfaces. As a Tekmar snow detector, the 664 comes standard with a temperature and moisture sensor. When temperatures drop below 32 degrees Fahrenheit and the sensor detects moisture in the air, the 664 then kicks on attached snow melt technologies.

This Tekmar melting control goes beyond simple on/off operation, though. The 664 truly is a snow melting control, able to direct two boilers into separate snow melting zones, each with differing temperatures. Take, for example, the owner of an office building. In winter, snow melt is needed in both the blacktop parking lot as well as the building's front steps. Installing a Tekmar 664 would allow the owner of this building to set different heat settings beneath these surfaces: a lower temperature beneath the heat-friendly blacktop and a higher temperature for the cold, concrete front steps. The 664 can also place priority of one zone above the other. So if the business owner wants the parking lot cleared before the steps, the 664 can direct heat to ensure that is exactly what happens.

The 664 can also control a variable speed mixing pump to make sure the hydronic fluid running throughout the snow melt system runs neither too hot or two cold. Like the other Tekmar control systems, the 664 features an LCD display screen and a limited array of buttons. This makes for simple navigation, ensuring a boiler system is steered to proper usage.

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