Tekmar 256 Boiler Control

Tekmar 256 Boiler Control is a compact, microprocessor-based boiler control designed for precise indoor heating management. The Tekmar 256 provides reliable 1-stage boiler control with DIP switch programming for quick setup and dependable operation.

Operates on 24 Volt AC (50/60 Hz) with 2 VA demand, and supports an indoor temperature range from 32 to 104°F. This unit includes a 10 kΩ NTC thermistor at 77°F and an outdoor/universal sensor for flexible response to outdoor conditions. The enclosure is NEMA 1, white PVC, designed for indoor installations, and supports configurations from 1-zone to multiple-zone fan coil and baseboard systems. The unit is UL and CAS listed for safety and reliability.

• 1-Stage microprocessor control with DIP switch programming
• Includes 10 kΩ NTC thermistor (77°F)
• Outdoor/Universal sensor included
• Indoor use; supports 1-zone to multiple-zone fan coil and baseboard
• NEMA 1, white PVC enclosure; UL/CAS listed
• 24 VAC input, 2 VA demand; relay rated 1/6 HP at 240 VAC (5 A)

Designed for reliable boiler control that simplifies setup while delivering precise temperature management across residential and light commercial heating systems.